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A special strip type filling mining method

A filling mining method and strip-type technology, which is applied in special mining, filling, ground mining, etc., can solve the problems of gas dissipation and insufficient amount of gangue in underground mines, so as to save time, weaken engineering disturbance, and make the process simple and clear Effect

Active Publication Date: 2022-07-12
GUIZHOU UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides a special strip-type filling mining method to solve the problems of "insufficient underground gangue" and "gas escape to the working face" in the traditional filling mining technology, so that the process of roadside support becomes It is more convenient, reduces the engineering disturbance to the upper and lower sections by mining in this section, and at the same time has a good control effect on large-area surface settlement

Method used

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Embodiment 1

[0029] refer to Figure 1 to Figure 6 , the present embodiment provides a special strip type filling mining method, which is as follows:

[0030] Taking the first section 1, the second section 10, the third section 12 to the fourth section 13 as an example, first, each section is divided into a plurality of partial filling areas 8 and caving areas 7 in stripes, and the partial filling The zones 8 are distributed at equal intervals along the mining direction, and between two adjacent partial filling zones 8 is a caving zone 7. Starting from a section 1, along the mining direction, two local filling zones 8 and two caving zones are formed. Zone 7 is taken as a group, that is, a mining cycle, mining zone by zone, the local filling zone 8 is partially backfilled and supported at the same time of mining, so that the local filling zone 8 after mining has local support 81, and the adjacent local filling zone The partial supports 81 in 8 are staggered. While mining, the roadside supp...

Embodiment 2

[0035] refer to Figure 1 to Figure 6 , taking a section 1 mining as an example, the specific steps are as follows:

[0036] 1) A section 1 is divided into a plurality of partial filling areas 8 and caving areas 7 in a strip shape. Assuming that the first mining area is the caving area 7, when mining, the coal cutter pushes the sliding frame every time after cutting a knife. The upper and lower parts of the filling area are provided with baffle plates, and the filling area is filled with coal gangue transported by the filling hydraulic support 5. After the front side is filled with one knife, the next knife cutting and filling process can be carried out until the strip mining is completed and the roadside support 9 The filling area is filled;

[0037] 2) The second mining area is the local filling area 8 . When mining the local filling area 8, the local support 81 in the local filling area 8 is also completed according to the construction method of the above-mentioned roadsid...

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Abstract

The invention provides a special strip-type filling mining method, which can reasonably plan the filling area and the caving area in the strip, reasonably distribute the coal gangue produced in the mining and excavation process, and combine the gas extraction design of the goaf with the gob-side The roadside support design of the roadway retention solves the problems of "insufficient amount of gangue in the well" and "gas escape to the working face" in the traditional backfill mining technology, making the process of roadside support easier and reducing the cost of The mining of this section has a good control effect on the engineering disturbance of the upper and lower sections, and at the same time, it has a good control effect on the large-scale subsidence of the surface. It belongs to the field of coal mining.

Description

technical field [0001] The invention relates to a special strip type filling mining method, which belongs to the technical field of coal mining. Background technique [0002] The characteristics of China's primary energy reserves and economic development stage, which are rich in coal, poor in oil and little gas, determine that coal will still dominate China's primary energy consumption structure for a long time. Most of my country's coal resources are mined by wells, and all caving roof management not only promotes economic development, but also causes environmental problems such as groundwater loss and surface subsidence. In response to a series of problems brought about by the caving method, our country has proposed the filling and mining technology, which has achieved good results through practice. With the continuous approach of the coal industry to a safe, green and economical energy industry system, coal filling mining has become a trend, among which coal gangue filli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/18E21F15/00E21F7/00
CPCE21C41/18E21F15/00E21F7/00
Inventor 刘萍贾毅超敖以章韩绅陈镇罗畅
Owner GUIZHOU UNIV
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