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Roof contacting process in goaf filling treating procedure

A technology for processing processes and gobs, applied to filling materials, mining equipment, earthwork drilling and mining, etc., can solve the problems of difficulty in filling and roofing, low efficiency of roofing, high cost of roofing, etc., and save the cost of filling and roofing , Guarantee normal production and high efficiency of top connection

Inactive Publication Date: 2013-08-07
HEBEI IRON & STEEL GRP MINING +2
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AI Technical Summary

Problems solved by technology

During the mining process, due to the blasting construction, the roof that eventually forms the goaf is often uneven, and there are even many dead corners, and it is difficult to fill and connect the roof; if the roof connection effect is not good, it will seriously affect the final goaf. stability control effect
Background Art Gob filling and roofing process is complicated, the workload is heavy, the cost of roofing is high, and the efficiency of roofing is low

Method used

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  • Roof contacting process in goaf filling treating procedure

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Embodiment Construction

[0011] The present invention will be further described below through embodiment.

[0012] In the example, a large-scale open-pit mining of an iron mine began in 1975. In July 2001 and October 2003, the mineral resources in the middle of -60 meters were developed and constructed twice, and in 2010 Phase III mining construction at -120m level. The third phase of mining adopts the method of subsequent filling, a two-step mining method, segmented open space and subsequent filling mining method, mining pillars first, filling them with tailing sand to form artificial pillars, and then mining large mine rooms. If the artificial ore pillar cannot be connected to the roof, the high height of the empty roof will add difficulty to the recovery of the second-step mine, resulting in a passive situation in production.

[0013] Preparation before filling

[0014] When mining the last stratum, certain adjustments are made to the blasting parameters and mining technology. The specific metho...

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Abstract

The invention relates to a roof contacting process in a goaf filling treating procedure and belongs to the technical field of mining engineering. The technical scheme of the roof contacting process in the goaf filling treating procedure includes: detecting a goaf to obtain the coordinate of the top point position of a top plate; drilling a filling drill hole at the top point position of the top plate, and performing cementing filling; installing a three-way plug valve on a filling pipe of the filling drill hole, and guiding a washing pipeline out on the filling pipe through the three-way plug valve; when the position with 1m away from the top point of the top plate is filled, extending the filling pipe to the position farthest from the filling drill hole, and simultaneously, arranging a 1-1.5m temporary retaining wall on the filling drill hole portion; when cement body is full, continuing to fill; and finally opening the three-way plug valve, guiding water away through the washing pipeline and finishing the filling roof contacting work. The roof contacting process is particularly suitable for filling the goaf generated during the filling exploitation process afterwards, is good in filling roof contacting effect and low in working intensity, saves filling roof contacting cost, achieves the roof contacting maximumly, is high in roof contacting efficiency, and ensures normal production of mines.

Description

technical field [0001] The invention relates to a roofing process in the goaf filling process, belonging to the technical field of mining engineering. Background technique [0002] In recent years, with the development of mineral resource mining in depth and breadth, the number of gobs has increased dramatically. The existence of the goaf seriously affects the safe production of the mine, and also threatens the life and property safety of the surrounding residents and the ecological environment. It has become one of the major danger sources of the mine and must be treated as soon as possible. At present, the filling method is mainly used for treatment, and the effect of roof connection in the process of filling treatment is directly related to the effect of goaf filling treatment and the stability control of goaf after filling. During the mining process, due to the blasting construction, the roof that eventually forms the goaf is often uneven, and there are even many dead c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F15/00
Inventor 南世卿付建新宋卫东宋爱东杨楠韩瑞亮
Owner HEBEI IRON & STEEL GRP MINING
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