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Close distance coal seam roadway excavation method based on roadway's side displacement analysis

A short-distance, roadway technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of low construction cost, affecting the normal use of roadway, intrusion into roadway clearance, etc., achieving low input cost and easy construction process. Control and achieve simple effects

Active Publication Date: 2016-11-16
内蒙古珠江投资有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for excavating roadways in short-distance coal seams based on the analysis of roadside displacement in view of the deficiencies in the above-mentioned prior art. The surrounding rock deformation of the roadway in the lower coal seam is determined separately for the reserved excavation volume of the two sides of the roadway, which can effectively solve the problem that the asymmetric deformation of the coal side invades the clearance of the roadway and affects the normal use of the roadway, and avoids the problem of the roadway in the lower coal seam. rework work with low construction costs

Method used

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  • Close distance coal seam roadway excavation method based on roadway's side displacement analysis
  • Close distance coal seam roadway excavation method based on roadway's side displacement analysis
  • Close distance coal seam roadway excavation method based on roadway's side displacement analysis

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Embodiment Construction

[0043] Such as image 3 Shown is a method for excavating a short-distance coal seam roadway based on the analysis of the roadside displacement. The short-distance coal roadway 1 is excavated in multiple sections from back to front along the longitudinal direction of the roadway; figure 1 , The cross section of the short distance coal seam roadway 1 is rectangular and it is a roadway mined in the lower coal seam 2. The short distance coal seam roadway 1 is located below one side of the upper coal seam roadway 3, and the upper coal seam roadway 3 is A roadway mined in the upper coal seam 4, the upper coal seam 4 is located above the lower coal seam 2, and the upper coal seam 4 and the lower coal seam 2 are separated by an interlayer 5; the short distance coal seam roadway 1 and the upper coal seam roadway 3 are arranged in parallel One side of the upper coal seam roadway 3 is a goaf 6 and the other side is a reserved coal pillar 7, the short-distance coal seam roadway 1 is located ...

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Abstract

The invention discloses a close distance coal seam roadway excavation method based on roadway's side displacement analysis. The method comprises steps: 1, determining surrounding rock basic mechanical parameters; 2, determining reserved excavated volume of two sides of a roadway, including according to the determined surrounding rock basic mechanical parameters, combined with an inward displacement theoretical value of the pressing-side coal side of an overlaying rock and an inward displacement theoretical value of the pressing-side coal side of a coal pillar, determining reserved excavated volume of two sides of the roadway of a current construction segment; 3, excavating the roadway, including according to the determined reserved excavated volume of two sides of the roadway, excavating the current construction segment from back to front; 4, excavating a next segment; 5, repeating the step 4 for multiple times, until all excavation processes of the close distance coal seam roadway are completed. The method is simple in steps, rational in design, convenient in implementation, and good in use effect. The method respectively determines the reserved excavated volumes of two sides of the roadway according to surrounding rock deformation conditions of a close distance underlying seam roadway, and can solve a problem of intrusion roadway headroom after coal sides deform asymmetrically.

Description

Technical field [0001] The invention belongs to the technical field of roadway construction, and in particular relates to a short-distance coal seam roadway excavation method based on the analysis of the roadside displacement. Background technique [0002] In recent years, with the gradual depletion of medium and thick coal seam resources, the mining of short-range thin coal seams (also called short-range coal seam mining) has become one of the inevitable trends in the development of coal resources today. It is generally considered that the coal seams are closely spaced and have significant mutual influence during mining; generally refers to coal seams with a coal seam spacing of less than 30m, that is, the thickness of the interlayer is less than 30m. Due to the small distance between the coal seams in the close coal seams, the surrounding rock deformation is severe due to the concentrated pressure formed by the remaining coal pillars after the upper coal seam is mined. The stre...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06Q50/02
CPCG06Q50/02G06F30/13
Inventor 于远祥
Owner 内蒙古珠江投资有限公司
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