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Hole cutting and slope expansion construction technology for fully-mechanized working face of complex coal bed

A technology of fully mechanized mining face and construction technology, applied in mining equipment, earthwork drilling, shaft equipment, etc., can solve the problems of unfavorable safety production, rapid installation of cutting holes, low safety factor, high labor intensity, etc., to avoid secondary The effect of supporting problems, reducing coal mining costs and reducing labor intensity

Inactive Publication Date: 2017-05-24
SICHUAN CHUANMEI HUARONG ENERGY CO LTD
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Problems solved by technology

[0003] The present invention provides a construction technique for cutting holes and expanding sides in fully mechanized coal seam mining faces, which solves the problem of low working efficiency, high labor intensity, long construction period and low safety factor of existing mining methods, which are not conducive to safe production and rapid installation of cutting holes. The problem

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  • Hole cutting and slope expansion construction technology for fully-mechanized working face of complex coal bed
  • Hole cutting and slope expansion construction technology for fully-mechanized working face of complex coal bed
  • Hole cutting and slope expansion construction technology for fully-mechanized working face of complex coal bed

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with accompanying drawing.

[0021] In the present invention, the construction process of side cutting and side expansion in the complex coal seam fully mechanized mining face first uses the delivery system of the original cut side to expand the sides on both sides of the original side cut area 1, and completes the supporting work required for the side expansion. like figure 1 and figure 2 As shown, the progress of the cycle operation is 1m, the width of the original incision area 1 is 2.2m, and the two sides of the original incision area 1 are respectively marked as area A, that is, the side is expanded by 3.4m in area A by using the original incision shipping system . The cycle work progress is based on 0.8-2.0m. On both sides of the original eye-cut area 1, the sides are expanded respectively, one side is expanded by 3.4m, and the other side is widened by 1.0m in addition to the expansion of 3.4...

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Abstract

The invention discloses a hole cutting and slope expansion construction technology for a fully-mechanized working face of a complex coal bed, and relates to the technical field of coal mining. The construction technology solves the problems that an existing mining method is low in efficiency and safety coefficient, high in labor intensity and long in construction period, and safety production and rapid installation of cut holes are not facilitated. The construction technology includes the steps: firstly, respectively performing slope expansion on two sides of an original hole cutting area by the aid of a shipment system of an original cut hole; secondly, performing undercutting for an area below the original hole cutting area; finally respectively performing undercutting for two sides of the area below the original hole cutting area until hole cutting and slope expansion are finished. Simultaneous slope expansion of two sides of the original hole cutting area are performed, double drilling machines can parallelly work on the working surface, exposed time of roofs is shortened, working efficiency is improved, workload manually sweeping coat is reduced, and labor intensity of workers is relieved. Compared with a past construction method which is characterized in that roof brushing is firstly performed, slope expansion is performed, and upper coal is reserved, secondary supporting caused by roof brushing is avoided, and coal mining cost is reduced.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to a construction technique for cutting eyelets and expanding sides in fully mechanized mining working faces in complex coal seams. Background technique [0002] For coal seams with large inclination angles and thick coal seams, and for complex coal seams, the full-height fully mechanized mining method is adopted in one-time mining, and the side-cutting and side expansion mining area is carried out according to the method of side expansion from top to bottom and bottom pulling at one time. This method has low construction efficiency, high labor intensity, and high cost. At the same time, the cut-out installation period is prolonged, and the safety factor is low, which is not conducive to safe production and fast installation of the cut-out. Contents of the invention [0003] The present invention provides a construction technique for cutting holes and expanding sides in fully ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/01E21D11/15E21D20/00
CPCE21D11/155E21D11/152E21D20/00
Inventor 范勇军刘祥蒋仕柱田苗
Owner SICHUAN CHUANMEI HUARONG ENERGY CO LTD
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