Large-mining-height fully mechanized coal working face fast top rock breaking crossing fault method
A fully-mechanized mining face and fault-passing technology, which is applied in ground mining, earth drilling, underground mining, etc., can solve the problems of slow advancement of fully-mechanized mining face through faults with large mining heights, so as to reduce the difficulty of cutting and improve the advancement speed effect
Inactive Publication Date: 2016-05-18
HUAINAN MINING IND GRP +1
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[0005] The invention provides a method for quickly breaking through the roof strata and crossing faults in fully mechanized mining working faces with large mining heights, which can effectively solve the technical problem of slow progress in crossing faults in fully mechanized mining working faces with large mining heights
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[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the implementation manners of the present invention will be further described in detail below.
[0025] The method for quickly breaking the roof slab and crossing the fault in the fully mechanized mining face with a large mining height comprises the following steps:
[0026] (1) According to the advancing direction of the working face and the nature of the fault, determine the advancing route 1 for the proposed roof slab to pass through the fault area in the working face;
[0027] (2) According to the determined route of the advancing direction of the working face, excavate the small-section auxiliary roadway 2 in advance along the fault line;
[0028] (3) Drill the deep hole 3 within the range of the roof of the advance route of the predetermined working face in the auxiliary roadway for blasting;
[0029] (4) The working face pushes through the fault according to the pre...
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The invention relates to a large-mining-height fully mechanized coal working face fast top rock breaking crossing fault method. The method mainly aims at the fault which is in skew intersection with the working face advance direction and has the fault displacement being not smaller than the coal seam thickness. The method comprises the following steps of (1) determining an advance route of working face top rock to be broken in a crossing fault region according to the working face advance direction and the fault properties; (2) tunneling a small section auxiliary tunnel along a fault line in advance according to the determined working face advance direction route; (3) drilling a medium-deep hole into the working face advance route top rock range pre-determined in the auxiliary tunnel, and performing blasting; and (4) enabling the working face to cross the fault according to the preset crossing fault route. The method has the advantages that the top rock at the section requiring rock cutting by a coal cutter in the working face crossing fault advance direction is subjected to blasting treatment in advance, so that the fast advance of the working face is facilitated.
Description
technical field [0001] The invention relates to a method for quickly breaking a roof slab and crossing a fault at a working face, in particular to a method for quickly passing a fault at a fully mechanized mining face with a large mining height. Background technique [0002] Faults are very common geological structures in fully mechanized mining working faces. The existence of faults often greatly affects the safe production of working faces, especially in fully mechanized mining working faces with large mining heights. One method is to pass through the fault, one is to pass through the roof, and the roof condition is good, but shallow holes are often shot in the working face, which affects production, and the working face advances slowly; the other is to pass through the bottom, relatively little coal is thrown, but the working face needs When passing through the coal-rock weakening zone in the fault fracture zone, large roof caving accidents often occur. Even if auxiliary ...
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Login to View More IPC IPC(8): E21C41/18
CPCE21C41/18
Inventor 唐永志曹海山徐刚李万峰张学亮李俊斌钱统傲李群韩先进侯俊领
Owner HUAINAN MINING IND GRP