{"id":3181,"date":"2026-02-06T10:00:31","date_gmt":"2026-02-06T02:00:31","guid":{"rendered":"https:\/\/www.zongdamining.com\/?p=3181"},"modified":"2026-02-02T18:35:41","modified_gmt":"2026-02-02T10:35:41","slug":"common-causes-of-drill-rod-jamming-in-underground-mining-and-how-to-reduce-it","status":"publish","type":"post","link":"https:\/\/www.zongdamining.com\/vi\/common-causes-of-drill-rod-jamming-in-underground-mining-and-how-to-reduce-it\/","title":{"rendered":"Nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn c\u1ee7a Khoan Rod Jamming trong khai th\u00e1c m\u1ecf ng\u1ea7m - v\u00e0 l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 gi\u1ea3m n\u00f3"},"content":{"rendered":"
\"Ho\u1ea1t<\/div>\n

Khoan thanh ch\u1ea5n l\u00e0 m\u1ed9t trong nh\u1eefng v\u1ea5n \u0111\u1ec1 c\u00f3 v\u1ebb \u201cnh\u1ecf\u201d cho \u0111\u1ebfn khi n\u00f3 \u0103n m\u1ed9t n\u1eeda shift. B\u1ea1n m\u1ea5t th\u1eddi gian \u1edf khu\u00f4n m\u1eb7t, b\u1ea1n \u0111\u1ed1t ch\u00e1y c\u00e1c m\u1ea3nh v\u00e0 kh\u1edbp n\u1ed1i, v\u00e0 phi h\u00e0nh \u0111o\u00e0n b\u1eaft \u0111\u1ea7u th\u1ef1c hi\u1ec7n c\u00e1c gi\u1ea3i ph\u00e1p th\u01b0\u1eddng t\u1ea1o ra s\u1ef1 k\u1eb9t ti\u1ebfp theo. Trong c\u00e1c ti\u00eau \u0111\u1ec1 ng\u1ea7m, thanh hi\u1ebfm khi b\u1ecb m\u1eafc k\u1eb9t v\u00ec m\u1ed9t l\u00fd do duy nh\u1ea5t. N\u00f3 gi\u1ed1ng nh\u01b0 m\u1ed9t chu\u1ed7i: thi\u1ebft l\u1eadp khoan \u0111i\u1ec1u ki\u1ec7n \u0111\u00e1 h\u00e0nh vi m\u00e1y \u0111i\u1ec1u ki\u1ec7n thanh r\u1eeda.<\/p>\n

H\u01b0\u1edbng d\u1eabn n\u00e0y ph\u00e1 v\u1ee1 c\u00e1c nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn nh\u1ea5t b\u1ea1n th\u1ea5y trong th\u1ef1c t\u1ebf gi\u00e0n khoan m\u1ecf ng\u1ea7m<\/strong><\/a> l\u00e0m vi\u1ec7c, sau \u0111\u00f3 \u0111i b\u1ed9 qua c\u00e1c s\u1eeda ch\u1eefa th\u1ef1c t\u1ebf c\u1eaft k\u1eb9t m\u00e0 kh\u00f4ng bi\u1ebfn nh\u00f3m khoan c\u1ee7a b\u1ea1n th\u00e0nh m\u1ed9t th\u00ed nghi\u1ec7m ph\u00f2ng th\u00ed nghi\u1ec7m.<\/p>\n

Nh\u1eefng g\u00ec khoan Rod Jamming tr\u00f4ng gi\u1ed1ng nh\u01b0 \u1edf khu\u00f4n m\u1eb7t<\/strong><\/h2>\n

K\u1eb9t thanh kh\u00f4ng ch\u1ec9 l\u00e0 \"thanh s\u1ebd kh\u00f4ng xu\u1ea5t hi\u1ec7n\". Trong s\u1ea3n xu\u1ea5t, khoan ch\u1eadm l\u1ea1i, m\u00f4-men xo\u1eafn leo l\u00ean, v\u1ebft c\u1eaft ng\u1eebng l\u00e0m s\u1ea1ch, sau \u0111\u00f3 thanh b\u1ecb r\u00e0ng bu\u1ed9c trong khi khoan ho\u1eb7c r\u00fat. \u0110\u00f4i khi n\u00f3 \u0111\u01b0\u1ee3c ph\u00e1t h\u00e0nh sau khi r\u00fat lui. \u0110\u00f4i khi n\u00f3 kh\u00f3a v\u00e0 b\u1ea1n d\u00e0nh m\u1ed9t gi\u1edd ti\u1ebfp theo kh\u00f4ng l\u00e0m g\u00ec h\u1eefu \u00edch.<\/p>\n

\u0110i\u1ec1u n\u00e0y quan tr\u1ecdng b\u1edfi v\u00ec c\u00f4ng vi\u1ec7c khu\u00f4n m\u1eb7t l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng. M\u1ed9t thanh b\u1ecb m\u1eafc k\u1eb9t ch\u1eb7n jumbo, tr\u00ec ho\u00e3n s\u1ea1c, \u0111\u1ea9y n\u1ed5 sau \u0111\u00f3, v\u00e0 sau \u0111\u00f3 b\u00f9n v\u00e0 v\u1eadn chuy\u1ec3n \u0111\u01b0\u1ee3c \u00e9p. Chi ph\u00ed kh\u00f4ng ch\u1ec9 l\u00e0 thanh. \u0110\u00f3 l\u00e0 to\u00e0n b\u1ed9 th\u1eddi gian chu k\u1ef3.<\/p>\n

L\u00e0m th\u1ebf n\u00e0o Jamming kh\u00e1c v\u1edbi th\u1ea5t b\u1ea1i Rod \u0111\u01a1n gi\u1ea3n<\/strong><\/h3>\n

M\u1ed9t thanh c\u00f3 th\u1ec3 th\u1ea5t b\u1ea1i b\u1edfi n\u1ee9t, h\u01b0 h\u1ea1i s\u1ee3i, ho\u1eb7c m\u1ec7t m\u1ecfi. Jamming l\u00e0 kh\u00e1c nhau. B\u1ea1n c\u00f3 th\u1ec3 k\u1eb9t m\u1ed9t thanh v\u1eabn \u201cm\u1ea1nh m\u1ebd\u201d, v\u00e0 b\u1ea1n c\u00f3 th\u1ec3 ph\u00e1 v\u1ee1 m\u1ed9t thanh kh\u00f4ng bao gi\u1edd k\u1eb9t. \u0110\u1ed1i x\u1eed v\u1edbi ch\u00fang nh\u01b0 c\u00e1c v\u1ea5n \u0111\u1ec1 li\u00ean quan, kh\u00f4ng ph\u1ea3i l\u00e0 c\u00f9ng m\u1ed9t v\u1ea5n \u0111\u1ec1.<\/p>\n

Y\u1ebfu t\u1ed1 \u0111\u1ecba ch\u1ea5t l\u00e0m cho g\u00e2y nhi\u1ec5u nhi\u1ec1u kh\u1ea3 n\u0103ng h\u01a1n<\/strong><\/h2>\n

Rock l\u00e0 \u00f4ng ch\u1ee7 d\u01b0\u1edbi l\u00f2ng \u0111\u1ea5t. C\u00f9ng m\u1ed9t ng\u01b0\u1eddi \u0111i\u1ec1u h\u00e0nh, c\u00f9ng m\u1ed9t jumbo, c\u00f9ng m\u1ed9t thanh c\u00f3 th\u1ec3 ch\u1ea1y s\u1ea1ch trong m\u1ed9t d\u1eebng v\u00e0 b\u1ecb k\u1eb9t c\u1ea3 ng\u00e0y trong tr\u00f4i ti\u1ebfp theo. Nh\u1eefng thay \u0111\u1ed5i \u0111\u1ecba ch\u1ea5t nh\u1ecf gi\u1eefa c\u00e1c ti\u00eau \u0111\u1ec1 c\u00f3 th\u1ec3 thay \u0111\u1ed5i t\u1ef7 l\u1ec7 k\u1eb9t c\u1ee7a b\u1ea1n qua \u0111\u00eam.<\/p>\n

V\u1ee1, g\u00e3y ho\u1eb7c \u0111\u00e1 l\u1edbp<\/strong><\/h3>\n

V\u00f9ng l\u1ed7i, b\u0103ng c\u1eaft, v\u00e0 m\u1eb7t \u0111\u1ea5t n\u1eb7ng n\u1ec1 \u0111\u1ed5 m\u1ea3nh chip v\u00e0o l\u1ed7. Nh\u1eefng m\u1ea3nh n\u00eam gi\u1eefa thanh v\u00e0 t\u01b0\u1eddng, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong khi r\u00fat lui. \u0110\u00e1 l\u1edbp c\u0169ng c\u00f3 th\u1ec3 \u0111i\u1ec1u khi\u1ec3n bit off line, l\u00e0m t\u0103ng ti\u1ebfp x\u00fac v\u00e0 ch\u00e0 x\u00e1t. M\u1ed9t khi ch\u00e0 x\u00e1t b\u1eaft \u0111\u1ea7u, \u0111\u00f3ng g\u00f3i ph\u1ea1t v\u00e0 thanh c\u1ea3m th\u1ea5y \"d\u00ednh\".<\/p>\n

\u0110\u1ed9 c\u1ee9ng bi\u1ebfn trong m\u1ed9t l\u1ed7<\/strong><\/h3>\n

Chuy\u1ec3n \u0111\u1ed5i c\u1ee9ng-m\u1ec1m-c\u1ee9ng t\u1ea1o ra h\u00e0nh vi khoan kh\u00f4ng \u1ed5n \u0111\u1ecbnh. T\u1ef7 l\u1ec7 th\u00e2m nh\u1eadp thay \u0111\u1ed5i, thanh c\u00f3 th\u1ec3 u\u1ed1n cong, v\u00e0 t\u1ea3i tr\u1ecdng b\u00ean t\u0103ng t\u1ea1i c\u00e1c kh\u1edbp n\u1ed1i v\u00e0 kh\u1edbp n\u1ed1i. N\u1ebfu m\u00f4 h\u00ecnh l\u1ed7 c\u1ee7a b\u1ea1n v\u01b0\u1ee3t qua c\u00e1c v\u00f9ng thay \u0111\u1ed5i, mong \u0111\u1ee3i nhi\u1ec1u k\u1eb9t h\u01a1n tr\u1eeb khi c\u00e0i \u0111\u1eb7t thay \u0111\u1ed5i v\u1edbi m\u1eb7t \u0111\u1ea5t.<\/p>\n

C\u0103ng th\u1eb3ng cao v\u00e0 \u0111\u00f3ng l\u1ed7 trong m\u1ecf s\u00e2u<\/strong><\/h3>\n

\u1ede \u0111\u1ed9 s\u00e2u, \u0111\u00e1 c\u00f3 th\u1ec3 \u00e9p n\u00e9n. Kh\u00f3a l\u1ed7 l\u00e0 th\u1ef1c s\u1ef1 trong c\u00e1c ti\u00eau \u0111\u1ec1 c\u0103ng th\u1eb3ng cao, \u0111\u1eb7c bi\u1ec7t l\u00e0 n\u1ebfu khoan t\u1ea1m d\u1eebng. M\u1ed9t l\u1ed7 \u0111\u00e3 t\u1ed1t 10 ph\u00fat tr\u01b0\u1edbc c\u00f3 th\u1ec3 th\u1eaft ch\u1eb7t \u0111\u1ee7 \u0111\u1ec3 r\u00e0ng bu\u1ed9c thanh khi b\u1ea1n c\u1ed1 g\u1eafng r\u00fat l\u1ea1i.<\/p>\n

C\u00e1c th\u00f4ng s\u1ed1 khoan k\u00edch ho\u1ea1t g\u00e2y nhi\u1ec5u<\/strong><\/h2>\n

R\u1ea5t nhi\u1ec1u s\u1ef1 g\u00e2y nhi\u1ec5u l\u00e0 t\u1ef1 g\u00e2y ra. N\u00f3 x\u1ea3y ra khi c\u00e1c c\u00e0i \u0111\u1eb7t \u0111\u01b0\u1ee3c gi\u1eef \u1ed5n \u0111\u1ecbnh trong khi \u0111i\u1ec1u ki\u1ec7n thay \u0111\u1ed5i. \u0110\u00e2y c\u0169ng l\u00e0 n\u01a1i b\u1ea1n gi\u00e0nh l\u1ea1i th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng, b\u1edfi v\u00ec b\u1ea1n ki\u1ec3m so\u00e1t c\u00e1c \u0111\u00f2n b\u1ea9y n\u00e0y.<\/p>\n

L\u1ef1c l\u01b0\u1ee3ng th\u1ee9c \u0103n qu\u00e1 m\u1ee9c<\/strong><\/h3>\n

Qu\u00e1 m\u1ee9c \u0103n l\u00e0 m\u1ed9t \u0111i\u1ec1u c\u1ed5 \u0111i\u1ec3n. Trong \u0111\u00e1 c\u1ee9ng, qu\u00e1 nhi\u1ec1u th\u1ee9c \u0103n c\u00f3 th\u1ec3 l\u00e1i bit ra kh\u1ecfi trung t\u00e2m v\u00e0 l\u00e0m t\u0103ng ti\u1ebfp x\u00fac t\u01b0\u1eddng. Th\u00e2m nh\u1eadp c\u00f3 th\u1ec3 tr\u00f4ng t\u1ed1t trong m\u1ed9t kho\u1ea3nh kh\u1eafc, sau \u0111\u00f3 m\u00f4-men xo\u1eafn t\u0103ng v\u00e0 l\u1ed7 b\u1eaft \u0111\u1ea7u \u0111\u00e1nh b\u00f3ng v\u00e0 \u0111\u00f3ng g\u00f3i. N\u1ebfu m\u00e1y b\u1eaft \u0111\u1ea7u \"n\u00f3i l\u1ea1i\", h\u00e3y l\u00f9i l\u1ea1i s\u1edbm.<\/p>\n

T\u1ed1c \u0111\u1ed9 quay kh\u00f4ng \u0111\u00fang<\/strong><\/h3>\n

Qu\u00e1 nhanh: ph\u1ea1t nhi\u1ec1u h\u01a1n v\u00e0 \u0111\u00f3ng g\u00f3i nhi\u1ec1u h\u01a1n. Qu\u00e1 ch\u1eadm: chip t\u00edch l\u0169y v\u00e0 bit b\u1eaft \u0111\u1ea7u c\u1ecd ch\u00e0 thay v\u00ec c\u1eaft. N\u1ebfu s\u1ef1 th\u00e2m nh\u1eadp gi\u1ea3m v\u00e0 m\u00f4-men xo\u1eafn leo c\u00f9ng nhau, t\u1ed1c \u0111\u1ed9 quay (v\u00e0 ph\u00f9 h\u1ee3p ngu\u1ed3n cung c\u1ea5p \/ quay) th\u01b0\u1eddng l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a c\u00e2u chuy\u1ec7n.<\/p>\n

Hi\u1ec7u su\u1ea5t r\u1eeda k\u00e9m<\/strong><\/h3>\n

N\u1ebfu d\u00f2ng ch\u1ea3y n\u01b0\u1edbc th\u1ea5p, c\u00e1c \u0111\u01b0\u1eddng \u0111i b\u1ecb ch\u1eb7n m\u1ed9t ph\u1ea7n ho\u1eb7c \u00e1p su\u1ea5t kh\u00f4ng nh\u1ea5t qu\u00e1n, c\u00e1c v\u1ebft c\u1eaft \u0111\u1ecbnh c\u01b0 v\u00e0 x\u00e2y d\u1ef1ng xung quanh thanh. V\u1eadt li\u1ec7u tinh t\u1ebf c\u00f3 th\u1ec3 h\u00e0nh vi nh\u01b0 xi m\u0103ng \u01b0\u1edbt d\u01b0\u1edbi l\u00f2ng \u0111\u1ea5t. N\u1ebfu b\u1ea1n kh\u00f4ng th\u1ec3 l\u00e0m s\u1ea1ch v\u1ebft c\u1eaft, b\u1ea1n kh\u00f4ng th\u1ec3 gi\u1eef l\u1ed7 m\u1edf.<\/p>\n

Rod, kh\u1edbp n\u1ed1i v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 ch\u1ee7 \u0111\u1ec1 M\u1ecdi ng\u01b0\u1eddi b\u1ecf qua<\/strong><\/h2>\n

Ngay c\u1ea3 m\u1ecf t\u1ed1t \u0111\u00f4i khi \u0111\u1ed1i x\u1eed v\u1edbi thanh nh\u01b0 ch\u00fang \u0111\u1ec1u gi\u1ed1ng nhau cho \u0111\u1ebfn khi m\u1ed9t ng\u01b0\u1eddi b\u1ecb m\u1eafc k\u1eb9t. \u0110\u00f3 l\u00e0 suy ngh\u0129 \u0111\u1eaft ti\u1ec1n. M\u1ed9t th\u00f3i quen ki\u1ec3m tra \u0111\u01a1n gi\u1ea3n tr\u1ea3 l\u1ea1i nhanh ch\u00f3ng.<\/p>\n

Rod m\u00f2n v\u00e0 gi\u1ea3m \u0111\u01b0\u1eddng k\u00ednh<\/strong><\/h3>\n

C\u00e1c thanh m\u00f2n kh\u00f4ng h\u00e0nh x\u1eed nh\u01b0 nh\u1eefng thanh m\u1edbi. M\u1ea5t \u0111\u01b0\u1eddng k\u00ednh thay \u0111\u1ed5i s\u1ef1 ph\u00f9 h\u1ee3p, v\u00e0 m\u00e0i m\u00f2n c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c b\u1ec1 m\u1eb7t kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u g\u00e2y b\u1eaby ph\u1ea1t. Light bends c\u0169ng quan tr\u1ecdng. M\u1ed9t thanh tr\u00f4ng \u201ct\u1ed1t\u201d tr\u00ean gi\u00e1 c\u00f3 th\u1ec3 r\u00e0ng bu\u1ed9c khi n\u00f3 l\u00e0 v\u00e0i m\u00e9t trong v\u00e0 \u0111\u01b0\u1ee3c t\u1ea3i sang m\u1ed9t b\u00ean.<\/p>\n

Ch\u1ee7 \u0111\u1ec1 v\u00e0 kh\u1edbp n\u1ed1i b\u1ecb h\u01b0 h\u1ea1i<\/strong><\/h3>\n

Thread damage l\u00e0 sneaky. M\u1ed9t burr nh\u1ecf c\u00f3 th\u1ec3 t\u1ea1o ra ma s\u00e1t cao trong qu\u00e1 tr\u00ecnh quay ho\u1eb7c r\u00fat. Kh\u1edbp n\u1ed1i c\u0169ng c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 neo n\u1ebfu ch\u00fang b\u1eaft m\u1ea3nh v\u1ee1. N\u1ebfu k\u1eb9t x\u1ea3y ra nhi\u1ec1u h\u01a1n trong khi r\u00fat kh\u1ecfi khoan, kh\u1edbp n\u1ed1i v\u00e0 t\u00ecnh tr\u1ea1ng ch\u1ee7 \u0111\u1ec1 n\u00ean \u0111\u01b0\u1ee3c ki\u1ec3m tra tr\u01b0\u1edbc.<\/p>\n

L\u1ed7i s\u1eafp x\u1ebfp trong qu\u00e1 tr\u00ecnh thi\u1ebft l\u1eadp<\/strong><\/h3>\n

M\u1ed9t l\u1ed7i s\u1eafp x\u1ebfp nh\u1ecf \u1edf \u0111\u1ea7u tr\u1edf th\u00e0nh m\u1ed9t v\u1ea5n \u0111\u1ec1 l\u1edbn h\u01a1n \u1edf chi\u1ec1u s\u00e2u. N\u1ebfu ch\u00f9m \u0103n kh\u00f4ng vu\u00f4ng v\u1edbi m\u1eb7t, l\u1ed7 c\u00f3 th\u1ec3 lang thang s\u1edbm, sau \u0111\u00f3 ma s\u00e1t b\u00ean leo l\u00ean. Khi b\u1ea1n k\u00e9o l\u1ea1i, thanh k\u00e9o v\u00e0o t\u01b0\u1eddng thay v\u00ec tr\u01b0\u1ee3t.<\/p>\n

Thi\u1ebft b\u1ecb v\u00e0 nguy\u00ean nh\u00e2n c\u1ea5p h\u1ec7 th\u1ed1ng<\/strong><\/h2>\n

\u0110\u00e2y l\u00e0 ph\u1ea7n m\u00e0 nhi\u1ec1u b\u00e0i vi\u1ebft \"chung\" b\u1ecf qua. Trong c\u00e1c ti\u00eau \u0111\u1ec1 th\u1ef1c t\u1ebf, h\u00e0nh vi m\u00e1y quy\u1ebft \u0111\u1ecbnh li\u1ec7u b\u1ea1n c\u00f3 ph\u1ee5c h\u1ed3i t\u1eeb c\u00e1c d\u1ea5u hi\u1ec7u k\u1eb9t s\u1edbm hay l\u00e1i th\u1eb3ng v\u00e0o m\u1ed9t thanh b\u1ecb m\u1eafc k\u1eb9t.<\/p>\n

B\u1ea1n c\u00f3 th\u1ec3 th\u1ea5y nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y tr\u00ean h\u1ea7u h\u1ebft m\u1ecdi lo\u1ea1i gi\u00e0n khoan m\u1ecf ng\u1ea7m, nh\u01b0ng ch\u00fang xu\u1ea5t hi\u1ec7n nhi\u1ec1u nh\u1ea5t trong c\u00f4ng vi\u1ec7c m\u1eb7t n\u01a1i \u0111\u1ecbnh v\u1ecb thay \u0111\u1ed5i l\u1ed7 n\u00e0y sang l\u1ed7 kh\u00e1c.<\/p>\n

Boom \u1ed5n \u0111\u1ecbnh v\u00e0 ch\u00ednh x\u00e1c th\u1ee9c \u0103n<\/strong><\/h3>\n

Boom rung chuy\u1ec3n \u0111\u1ebfn thanh. \u0110\u1ed9 c\u1ee9ng ch\u00f9m th\u1ee9c \u0103n v\u00e0 s\u1ef1 s\u1eafp x\u1ebfp quy\u1ebft \u0111\u1ecbnh xem bit theo d\u00f5i s\u1ea1ch s\u1ebd hay lang thang. N\u1ebfu s\u1ef1 b\u00f9ng n\u1ed5 s\u1ebd kh\u00f4ng gi\u1eef v\u1ecb tr\u00ed d\u01b0\u1edbi t\u1ea3i, l\u1ed7 \"\u0111i b\u1ed9\", sau \u0111\u00f3 thanh b\u1eaft \u0111\u1ea7u c\u1ecd x\u00e1t.<\/p>\n

Tr\u00ean twin-boom khu\u00f4n m\u1eb7t khoan jumbo<\/strong><\/a> c\u00f4ng vi\u1ec7c, jack \u1ed5n \u0111\u1ecbnh v\u00e0 m\u1ed9t ng\u01b0\u1eddi v\u1eadn chuy\u1ec3n v\u1eefng ch\u1eafc gi\u00fap \u0111\u1ee1. S\u1ef1 \u1ed5n \u0111\u1ecbnh t\u1ed1t h\u01a1n th\u01b0\u1eddng c\u00f3 ngh\u0129a l\u00e0 l\u1ed7 th\u1eb3ng h\u01a1n v\u00e0 \u00edt b\u1ea5t ng\u1edd x\u1ea5u x\u00ed h\u01a1n khi r\u00fat ti\u1ec1n.<\/p>\n

Ki\u1ec3m so\u00e1t th\u1ee9c \u0103n v\u00e0 xoay kh\u00f4ng nh\u1ea5t qu\u00e1n<\/strong><\/h3>\n

M\u1ed9t khoan c\u00f3 th\u1ec3 c\u00f3 r\u1ea5t nhi\u1ec1u s\u1ee9c m\u1ea1nh t\u00e1c \u0111\u1ed9ng v\u00e0 v\u1eabn c\u00f3 thanh k\u1eb9t n\u1ebfu \u0111\u1ea7u ra kh\u00f4ng \u1ed5n \u0111\u1ecbnh. Vi\u1ec7c g\u00e2y nhi\u1ec5u th\u01b0\u1eddng theo d\u00f5i c\u00e1c c\u01a1n m\u00f4-men xo\u1eafn \u0111\u1ed9t ng\u1ed9t, ph\u1ea3n \u1ee9ng th\u1ee9c \u0103n kh\u00f4ng nh\u1ea5t qu\u00e1n ho\u1eb7c tr\u1ec5 gi\u1eefa \u0111\u1ea7u v\u00e0o \u0111i\u1ec1u khi\u1ec3n v\u00e0 \u0111\u1ea7u ra th\u1ee7y l\u1ef1c. \u0110i\u1ec1u khi\u1ec3n m\u01b0\u1ee3t m\u00e0, c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c gi\u1eef cho vi\u1ec7c c\u1eaft bit v\u00e0 l\u00e0m s\u1ea1ch l\u1ed7.<\/p>\n

C\u00e1c v\u00f2ng \u0111i\u1ec1u khi\u1ec3n ri\u00eang bi\u1ec7t gi\u00fap \u0111\u1ee1. C\u00e1c h\u1ec7 th\u1ed1ng ch\u1ea1y t\u00e1c \u0111\u1ed9ng, quay v\u00e0 cung c\u1ea5p th\u00f4ng qua c\u00e1c m\u1ea1ch \u0111\u1ed9c l\u1eadp c\u00f3 th\u1ec3 gi\u1eef vi\u1ec7c cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng \u1ed5n \u0111\u1ecbnh h\u01a1n khi \u0111\u00e1 thay \u0111\u1ed5i gi\u1eefa l\u1ed7.<\/p>\n

C\u00e1c t\u00ednh n\u0103ng ch\u1ed1ng nhi\u1ec5u v\u00e0 RPCF<\/strong><\/h3>\n

Ch\u1ed1ng nhi\u1ec5u kh\u00f4ng ph\u1ea3i l\u00e0 l\u00f4ng l\u00f4ng khi \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u00fang c\u00e1ch. M\u1ed9t h\u1ec7 th\u1ed1ng h\u1eefu \u00edch ph\u1ea3n \u1ee9ng v\u1edbi m\u00f4-men xo\u1eafn ho\u1eb7c \u00e1p su\u1ea5t quay thay \u0111\u1ed5i nhanh h\u01a1n so v\u1edbi m\u1ed9t ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u00f3 th\u1ec3. M\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh l\u00e0 th\u1ee9c \u0103n ki\u1ec3m so\u00e1t \u00e1p su\u1ea5t quay (RPCF), n\u01a1i th\u1ee9c \u0103n \u0111i\u1ec1u ch\u1ec9nh d\u1ef1a tr\u00ean \u00e1p su\u1ea5t quay. Khi l\u1ed7 b\u1eaft \u0111\u1ea7u th\u1eaft ch\u1eb7t ho\u1eb7c c\u00e1c v\u1ebft c\u1eaft b\u1eaft \u0111\u1ea7u \u0111\u00f3ng g\u00f3i, h\u1ec7 th\u1ed1ng h\u1ed7 tr\u1ee3 th\u1ee9c \u0103n v\u00e0 b\u1ea3o v\u1ec7 thanh v\u00e0 s\u1ee3i.<\/p>\n

\"Quan<\/div>\n

Th\u00f3i quen ho\u1ea1t \u0111\u1ed9ng l\u00e0m t\u0103ng t\u1ea7n s\u1ed1 g\u00e2y nhi\u1ec5u<\/strong><\/h2>\n

Ngay c\u1ea3 v\u1edbi thi\u1ebft b\u1ecb t\u1ed1t, th\u00f3i quen c\u00f3 th\u1ec3 im l\u1eb7ng l\u00e1i k\u1eb9t. H\u1ea7u h\u1ebft c\u00e1c c\u00e2u chuy\u1ec7n jam b\u1eaft \u0111\u1ea7u mu\u1ed9n trong th\u1eddi gian thay \u0111\u1ed5i, khi m\u1ecdi ng\u01b0\u1eddi m\u1ec7t m\u1ecfi v\u00e0 b\u1eaft \u0111\u1ea7u \u0111\u1ea9y.<\/p>\n

V\u1ed9i v\u00e0ng l\u1ed7 g\u1ea7n chi\u1ec1u s\u00e2u m\u1ee5c ti\u00eau<\/strong><\/h3>\n

Nhi\u1ec1u k\u1eb9t x\u1ea3y ra g\u1ea7n chi\u1ec1u s\u00e2u m\u1ee5c ti\u00eau. C\u00e1c nh\u00e0 khai th\u00e1c \u0111\u1ea9y m\u1ea1nh h\u01a1n \u0111\u1ec3 ho\u00e0n th\u00e0nh l\u1ed7, \u0111\u1eb7c bi\u1ec7t l\u00e0 khi v\u00f2ng tr\u1eadn \u0111i sau l\u1ecbch tr\u00ecnh. \u0110\u00f3 ch\u00ednh x\u00e1c l\u00e0 khi v\u1ebft c\u1eaft clearance tr\u1edf n\u00ean y\u1ebfu h\u01a1n v\u00e0 l\u1ed7 \u1ed5n \u0111\u1ecbnh c\u00f3 th\u1ec3 gi\u1ea3m.<\/p>\n

L\u00e0m s\u1ea1ch l\u1ed7 ngh\u00e8o gi\u1eefa c\u00e1c chuy\u1ebfn \u0111i<\/strong><\/h3>\n

N\u1ebfu khoan \u0111a th\u00f4ng qua \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, c\u00e1c l\u1ed7 c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c s\u1ea1ch s\u1ebd. \u0110\u1ec3 l\u1ea1i c\u00e1c v\u1ebft c\u1eaft c\u00f2n l\u1ea1i trong l\u1ed7 thi\u1ebft l\u1eadp b\u1ea1n \u0111\u1ec3 \u0111\u00f3ng g\u00f3i. N\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 c\u00f4ng vi\u1ec7c th\u00fa v\u1ecb, nh\u01b0ng n\u00f3 r\u1ebb h\u01a1n so v\u1edbi vi\u1ec7c thay th\u1ebf thanh v\u00e0 kh\u1edbp n\u1ed1i.<\/p>\n

M\u1ec7t m\u1ecfi v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh<\/strong><\/h3>\n

C\u00e1c d\u1ea5u hi\u1ec7u c\u1ea3nh b\u00e1o s\u1edbm th\u01b0\u1eddng r\u00f5 r\u00e0ng: thay \u0111\u1ed5i s\u00e2u \u0111\u1ed9, thay \u0111\u1ed5i rung, gi\u1ea3m th\u00e2m nh\u1eadp, t\u0103ng m\u00f4-men xo\u1eafn v\u00e0 thay \u0111\u1ed5i ch\u1ea5t l\u01b0\u1ee3ng c\u1eaft. C\u00e1c \u0111\u1ed9i ng\u0169 t\u1ed1t nh\u1ea5t ph\u1ea3n \u1ee9ng s\u1edbm. Tr\u1edf l\u1ea1i, r\u00f5 r\u00e0ng, \u0111\u1eb7t l\u1ea1i.<\/p>\n

C\u00e1ch th\u1ef1c t\u1ebf \u0111\u1ec3 gi\u1ea3m Khoan Rod Jamming d\u01b0\u1edbi l\u00f2ng \u0111\u1ea5t<\/strong><\/h2>\n

B\u1ea1n mu\u1ed1n \u00edt thanh b\u1ecb m\u1eafc k\u1eb9t h\u01a1n, chi ph\u00ed d\u1ee5ng c\u1ee5 th\u1ea5p h\u01a1n v\u00e0 \u00edt th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng h\u01a1n. \u0110\u00e2y l\u00e0 nh\u1eefng g\u00ec gi\u00fap s\u1ea3n xu\u1ea5t h\u00e0ng ng\u00e0y. Tr\u00ean kh\u1eafp gi\u00e0n khoan m\u1ecf ng\u1ea7m<\/strong><\/a> H\u1ea1m \u0111\u1ed9i, l\u1ee3i \u00edch l\u1edbn nh\u1ea5t th\u01b0\u1eddng \u0111\u1ebfn t\u1eeb nh\u1eefng \u0111i\u1ec1u c\u01a1 b\u1ea3n \u1ed5n \u0111\u1ecbnh \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n m\u1ed7i l\u1ea7n thay \u0111\u1ed5i.<\/p>\n

Th\u00f4ng s\u1ed1 khoan ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n \u0111\u00e1<\/strong><\/h3>\n

Tr\u00e1nh \u201cm\u1ed9t c\u00e0i \u0111\u1eb7t ph\u00f9 h\u1ee3p v\u1edbi t\u1ea5t c\u1ea3.\u201d \u0110i\u1ec1u ch\u1ec9nh ngu\u1ed3n c\u1ea5p v\u00e0 quay khi \u0111\u00e1 thay \u0111\u1ed5i. S\u1eed d\u1ee5ng m\u00f4-men xo\u1eafn v\u00e0 th\u00e2m nh\u1eadp nh\u01b0 ph\u1ea3n h\u1ed3i. N\u1ebfu m\u1ed9t khu v\u1ef1c c\u1ea3m th\u1ea5y kh\u00e1c nhau, h\u00e3y \u0111\u1ed1i x\u1eed v\u1edbi n\u00f3 kh\u00e1c nhau.<\/p>\n

C\u1ea3i thi\u1ec7n vi\u1ec7c x\u00f3a v\u00e0 lo\u1ea1i b\u1ecf v\u1ebft c\u1eaft<\/strong><\/h3>\n

D\u00f2ng ch\u1ea3y v\u00e0 \u00e1p su\u1ea5t \u0111\u1ee7. Ki\u1ec3m tra c\u00e1c k\u00eanh r\u1eeda, \u0111\u01b0\u1eddng d\u00e2y n\u01b0\u1edbc v\u00e0 v\u00f2i phun. H\u00e3y xem x\u00e9t s\u1ef1 suy gi\u1ea3m d\u1ea7n d\u1ea7n. S\u1ef1 r\u1eeda ch\u1ea3y th\u01b0\u1eddng tr\u00f4ng \u201c\u0111\u1ee7 t\u1ed1t\u201d cho \u0111\u1ebfn khi \u0111\u1ed9t nhi\u00ean kh\u00f4ng.<\/p>\n

Duy tr\u00ec thanh v\u00e0 kh\u1edbp n\u1ed1i ch\u1ee7 \u0111\u1ed9ng<\/strong><\/h3>\n

H\u01b0u tr\u00ed thanh tr\u01b0\u1edbc khi th\u1ea5t b\u1ea1i r\u00f5 r\u00e0ng. Ki\u1ec3m tra c\u00e1c s\u1ee3i, kh\u00f4ng ch\u1ec9 th\u00e2n thanh. Gi\u1eef kh\u1edbp n\u1ed1i s\u1ea1ch s\u1ebd. N\u1ebfu m\u1ed9t thanh c\u1ea3m th\u1ea5y th\u00f4 trong khi trang \u0111i\u1ec3m, kh\u00f4ng g\u1eedi n\u00f3 tr\u1edf l\u1ea1i khu\u00f4n m\u1eb7t.<\/p>\n

S\u1eed d\u1ee5ng thi\u1ebft b\u1ecb v\u1edbi th\u1ee9c \u0103n \u1ed5n \u0111\u1ecbnh v\u00e0 logic ch\u1ed1ng nhi\u1ec5u<\/strong><\/h3>\n

H\u1ec7 th\u1ed1ng ph\u1ea3n \u1ee9ng nhanh h\u01a1n ng\u01b0\u1eddi v\u1eadn h\u00e0nh gi\u00fap. Thi\u1ebft k\u1ebf b\u1ea3o v\u1ec7 thanh trong c\u00e1c \u0111\u1ec9nh m\u00f4-men xo\u1eafn c\u1eaft gi\u1ea3m thi\u1ec7t h\u1ea1i c\u00f4ng c\u1ee5. N\u1ebfu m\u1ecf c\u1ee7a b\u1ea1n ch\u1ea1y t\u1eeb xa, kh\u1eafc ph\u1ee5c v\u1ea5n \u0111\u1ec1 \u0111\u01a1n gi\u1ea3n h\u01a1n c\u0169ng quan tr\u1ecdng cho th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng. \u0110\u1ed1i v\u1edbi nhi\u1ec1u trang web, \u0111i\u1ec3m ng\u1ecdt l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng khoan th\u1ee7y l\u1ef1c \u1ed5n \u0111\u1ecbnh v\u1edbi truy c\u1eadp d\u1ecbch v\u1ee5 r\u00f5 r\u00e0ng v\u00e0 ch\u1ee9c n\u0103ng ch\u1ed1ng g\u00e2y nhi\u1ec5u \u0111\u00e1ng tin c\u1eady.<\/p>\n

C\u00e1c nh\u00e0 khai th\u00e1c t\u00e0u \u0111\u1ecdc c\u00e1c d\u1ea5u hi\u1ec7u c\u1ea3nh b\u00e1o s\u1edbm<\/strong><\/h3>\n

\u00c2m thanh, rung, th\u00e2m nh\u1eadp thay \u0111\u1ed5i. D\u1ea1y cho c\u00e1c phi h\u00e0nh \u0111o\u00e0n l\u00f9i s\u1edbm thay v\u00ec \u0111\u1ea9y qua. H\u1ea7u h\u1ebft c\u00e1c k\u1eb9t \u0111\u01b0a ra c\u1ea3nh b\u00e1o, nh\u01b0ng ch\u00fang d\u1ec5 b\u1ecf qua khi thay \u0111\u1ed5i d\u00e0i.<\/p>\n

T\u1ea1i sao gi\u1ea3m g\u00e2y nhi\u1ec5u gi\u00fap nhi\u1ec1u h\u01a1n th\u1eddi gian khoan<\/strong><\/h2>\n

Gi\u1ea3m nhi\u1ec5u kh\u00f4ng ch\u1ec9 l\u00e0 v\u1ec1 th\u1eddi gian khoan. Ch\u1ea5t l\u01b0\u1ee3ng l\u1ed7 t\u1ed1t h\u01a1n c\u1ea3i thi\u1ec7n k\u1ebft qu\u1ea3 phun. C\u00e1c v\u00f2ng s\u1ea1ch h\u01a1n gi\u1ea3m k\u00edch th\u01b0\u1edbc qu\u00e1 l\u1edbn, gi\u1ea3m t\u00e1i ch\u1ebf v\u00e0 l\u00e0m cho b\u00f9n m\u1ecbn h\u01a1n. \u0110i\u1ec1u \u0111\u00f3 cung c\u1ea5p cho m\u00e1y t\u1ea3i, xe t\u1ea3i v\u00e0 l\u1ecbch tr\u00ecnh th\u00f4ng gi\u00f3.<\/p>\n

S\u1ea3n ph\u1ea9m ti\u00eau th\u1ee5 c\u0169ng tr\u1edf n\u00ean c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c. \u0110i\u1ec1u n\u00e0y gi\u00fap l\u1eadp k\u1ebf ho\u1ea1ch v\u00e0 l\u1eadp ng\u00e2n s\u00e1ch.<\/p>\n

ZONGDA: Nh\u00e0 s\u1ea3n xu\u1ea5t th\u1ef1c t\u1ebf t\u1eadp trung v\u00e0o khai th\u00e1c m\u1ecf ng\u1ea7m \u0111\u00e1 c\u1ee9ng<\/strong><\/h2>\n

QINGDAO ZONGDA MACHINERY CO., LTD. C\u00f4ng ty TNHH<\/strong><\/a> l\u00e0 m\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t t\u1eadp trung thi\u1ebft b\u1ecb khai th\u00e1c kim lo\u1ea1i ng\u1ea7m cho c\u00e1c ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1 c\u1ee9ng nh\u01b0 v\u00e0ng, \u0111\u1ed3ng, s\u1eaft v\u00e0 ch\u00ec k\u1ebdm. D\u00f2ng s\u1ea3n ph\u1ea9m kh\u00f4ng nh\u1eb1m v\u00e0o c\u00e1c m\u1ecf than. Tr\u1ee5 s\u1edf t\u1ea1i Qingdao, ZONGDA x\u00e2y d\u1ef1ng m\u00e1y m\u00f3c c\u1ea5u h\u00ecnh th\u1ea5p cho c\u00e1c ti\u00eau \u0111\u1ec1 th\u1ef1c s\u1ef1, n\u01a1i nhi\u1ec7t, b\u1ee5i, n\u01b0\u1edbc v\u00e0 c\u1eeda s\u1ed5 d\u1ecbch v\u1ee5 ch\u1eb7t ch\u1ebd l\u00e0 b\u00ecnh th\u01b0\u1eddng. D\u00f2ng s\u1ea3n ph\u1ea9m bao g\u1ed3m xe t\u1ea3i khai th\u00e1c m\u1ecf ng\u1ea7m (8-35 t\u1ea5n) v\u00e0 m\u00e1y t\u1ea3i LHD (0,6-6 m\u00b3), c\u1ed9ng v\u1edbi c\u00e1c m\u00e1y khoan khu\u00f4n m\u1eb7t cho c\u00f4ng vi\u1ec7c ph\u00e1t tri\u1ec3n v\u00e0 s\u1ea3n xu\u1ea5t. Trong khoan, ZONGDA nh\u1ea5n m\u1ea1nh ki\u1ec3m so\u00e1t th\u1ee7y l\u1ef1c \u1ed5n \u0111\u1ecbnh v\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p ch\u1ed1ng g\u00e2y nhi\u1ec5u th\u1ef1c t\u1ebf (bao g\u1ed3m ki\u1ec3m so\u00e1t th\u1ee9c \u0103n theo ki\u1ec3u RPCF) \u0111\u1ec3 b\u1ea3o v\u1ec7 thanh v\u00e0 c\u1eaft gi\u1ea3m th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng. Truy c\u1eadp d\u1ecbch v\u1ee5 v\u00e0 ch\u1ed1ng \u00f4 nhi\u1ec5m \u0111\u01b0\u1ee3c coi l\u00e0 \u01b0u ti\u00ean thi\u1ebft k\u1ebf, b\u1edfi v\u00ec nhi\u1ec1u trang web c\u1ea7n thi\u1ebft b\u1ecb m\u00e0 c\u00e1c nh\u00f3m \u0111\u1ecba ph\u01b0\u01a1ng c\u00f3 th\u1ec3 duy tr\u00ec m\u00e0 kh\u00f4ng ch\u1edd \u0111\u1ee3i h\u1ed7 tr\u1ee3 OEM chuy\u00ean ng\u00e0nh.<\/p>\n

C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/strong><\/h2>\n

Q1: Nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn nh\u1ea5t c\u1ee7a g\u1eady khoan b\u1ecb k\u1eb9t d\u01b0\u1edbi l\u00f2ng \u0111\u1ea5t l\u00e0 g\u00ec?
\nA: H\u1ea7u h\u1ebft c\u00e1c k\u1eb9t b\u1eaft \u0111\u1ea7u v\u1edbi vi\u1ec7c lo\u1ea1i b\u1ecf v\u1ebft c\u1eaft k\u00e9m c\u1ed9ng v\u1edbi t\u1ea3i b\u00ean. \u0110\u00e1 g\u00e3y, r\u1eeda ch\u1ea3y y\u1ebfu v\u00e0 l\u1ef1c th\u1ee9c \u0103n hung h\u0103ng th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n c\u00f9ng nhau, sau \u0111\u00f3 thanh li\u00ean k\u1ebft trong khi khoan ho\u1eb7c r\u00fat lui.<\/p>\n

Q2: \u0110\u00e1 c\u1ee9ng h\u01a1n lu\u00f4n c\u00f3 ngh\u0129a l\u00e0 g\u00e2y nhi\u1ec5u nhi\u1ec1u h\u01a1n kh\u00f4ng?
\nA: Kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng v\u1eady. R\u1ea5t c\u1ee9ng \u0111\u00e1 c\u00f3 th\u1ec3 khoan s\u1ea1ch n\u1ebfu r\u1eeda l\u00e0 m\u1ea1nh m\u1ebd v\u00e0 c\u00e0i \u0111\u1eb7t ph\u00f9 h\u1ee3p v\u1edbi bit. Tr\u00e0n \u0111\u1ea5t h\u1ed7n h\u1ee3p, v\u00f9ng n\u1ee9t g\u00e3y, v\u00e0 chuy\u1ec3n ti\u1ebfp c\u1ee9ng-m\u1ec1m c\u00f3 xu h\u01b0\u1edbng g\u00e2y nhi\u1ec5u thanh th\u01b0\u1eddng xuy\u00ean h\u01a1n.<\/p>\n

Q3: M\u1ed9t h\u1ec7 th\u1ed1ng ch\u1ed1ng nhi\u1ec5u c\u00f3 th\u1ec3 th\u1ef1c s\u1ef1 gi\u1ea3m c\u00e1c thanh b\u1ecb k\u1eb9t kh\u00f4ng?
\nA: V\u00e2ng, n\u1ebfu n\u00f3 ph\u1ea3n \u1ee9ng v\u1edbi c\u00e1c thay \u0111\u1ed5i m\u00f4-men xo\u1eafn ho\u1eb7c \u00e1p su\u1ea5t quay v\u00e0 quay tr\u1edf l\u1ea1i th\u1ee9c \u0103n nhanh ch\u00f3ng. Ph\u1ea3n \u1ee9ng nhanh ch\u00f3ng \u0111\u00f3 c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 c\u00e1c thanh v\u00e0 s\u1ee3i tr\u01b0\u1edbc khi k\u1eb9t tr\u1edf th\u00e0nh m\u1ed9t \u0111i\u1ec3m d\u1eebng ho\u00e0n to\u00e0n.<\/p>\n

Q4: \u0110i\u1ec1u g\u00ec n\u00ean \u0111\u01b0\u1ee3c ki\u1ec3m tra tr\u01b0\u1edbc khi k\u1eb9t x\u1ea3y ra trong khi r\u00fat ti\u1ec1n?
\nA: B\u1eaft \u0111\u1ea7u v\u1edbi kh\u1edbp n\u1ed1i v\u00e0 t\u00ecnh tr\u1ea1ng ch\u1ee7 \u0111\u1ec1, sau \u0111\u00f3 ki\u1ec3m tra l\u00e0m s\u1ea1ch l\u1ed7 v\u00e0 r\u1eeda. K\u1eb9t r\u00fat th\u01b0\u1eddng ch\u1ec9 \u0111\u1ebfn \u0111\u00f3ng g\u00f3i m\u1ea3nh v\u1ee1, s\u1ee3i b\u1ecb h\u01b0 h\u1ea1i ho\u1eb7c s\u1ee5p \u0111\u1ed5 t\u01b0\u1eddng l\u1ed7.<\/p>\n

Q5: L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 gi\u1ea3m s\u1ef1 g\u00e2y nhi\u1ec5u thanh m\u00e0 kh\u00f4ng l\u00e0m ch\u1eadm s\u1ea3n xu\u1ea5t qu\u00e1 nhi\u1ec1u?
\nA: T\u1eadp trung v\u00e0o can thi\u1ec7p s\u1edbm. \u0110i\u1ec1u ch\u1ec9nh ngu\u1ed3n c\u1ea5p \u0103n v\u00e0 quay khi \u0111\u00e1 thay \u0111\u1ed5i, gi\u1eef cho r\u1eeda m\u1ea1nh m\u1ebd, ngh\u1ec9 h\u01b0u thanh m\u00f2n s\u1edbm, v\u00e0 g\u1eafn b\u00f3 v\u1edbi th\u00f3i quen thi\u1ebft l\u1eadp \u1ed5n \u0111\u1ecbnh. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng ti\u1ebft ki\u1ec7m nhi\u1ec1u th\u1eddi gian h\u01a1n chi ph\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"

Drill rod jamming is one of those problems that looks \u201csmall\u201d until it eats half a shift. You lose time at the face, you burn bits and couplings, and the crew starts making workarounds that usually create the next jam. In underground headings, the rod rarely gets stuck for one single reason. It is more […]<\/p>\n","protected":false},"author":1,"featured_media":3175,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1,16],"tags":[],"class_list":["post-3181","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-case"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.zongdamining.com\/vi\/wp-json\/wp\/v2\/posts\/3181","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zongdamining.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zongdamining.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zongdamining.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zongdamining.com\/vi\/wp-json\/wp\/v2\/comments?post=3181"}],"version-history":[{"count":0,"href":"https:\/\/www.zongdamining.com\/vi\/wp-json\/wp\/v2\/posts\/3181\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zongdamining.com\/vi\/wp-json\/wp\/v2\/media\/3175"}],"wp:attachment":[{"href":"https:\/\/www.zongdamining.com\/vi\/wp-json\/wp\/v2\/media?parent=3181"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zongdamining.com\/vi\/wp-json\/wp\/v2\/categories?post=3181"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zongdamining.com\/vi\/wp-json\/wp\/v2\/tags?post=3181"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}