Treatment method for upper corner suspension roof of heavy pitch fully mechanized mining coalface
A technology of fully mechanized mining face and coal mining face, which is applied in the direction of drilling equipment and methods, ground mining, mining equipment, etc., and can solve problems such as roof not collapsing, gas exceeding the limit, roof accidents, etc., to solve safety threats , reduce the possibility, the effect of simple construction
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[0017] The present invention will be further described below in conjunction with the drawings, but the present invention is not limited to the scope of the described embodiments.
[0018] See figure 1 , figure 2 , image 3 , Figure 4 , A method for the treatment of the upper corner and suspended roof of a steeply inclined fully mechanized mining face is mainly composed of forced caving drilling (5), hydraulic fracturing drilling (6), and advanced presplitting blasting drilling (7). Intensive support for cutting roof in coal working face (4) Arrange two rows of forced caving boreholes (5) along the inclination, and arrange a row of advanced pre-splitting along the strike direction in the air tunnel of coal mining face (1) Advance support (2) Blast drilling (7), and arrange hydraulic fracture drilling (6) between the end support (3) and the air tunnel (1) advanced support (2) on the coal mining face.
[0019] In this embodiment, the forced top caving borehole (5) is arranged close...
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