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River-oriented coal mine old goaf water disaster inspection and treatment integrated treatment method

A technology for old empty areas and water damage, applied in the fields of drilling equipment and methods, earthwork drilling, soil protection, etc., can solve the problems of long construction time, poor sealing effect of empty areas and water supply sources, and high cost

Active Publication Date: 2021-08-20
CHINA UNIV OF MINING & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above analysis, the present invention aims to provide an integrated treatment method for water disaster investigation and treatment in the old empty area of ​​Linhe Coal Mine, which is used to solve the problem that the existing investigation and treatment method adopts the method of first investigation and then treatment, which leads to long construction time and high cost. and one or more of the problems of poor plugging between empty areas and replenishment water sources

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  • River-oriented coal mine old goaf water disaster inspection and treatment integrated treatment method

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Embodiment 1

[0045]A specific embodiment of the present invention discloses an integrated treatment method for water disaster investigation and treatment in the old empty area of ​​Linhe Coal Mine. The operation process is as follows figure 1 shown, including the following steps:

[0046] Set up a water-stop curtain inspection and exploration line between the surface river and the boundary of the mining area, and the water-stop curtain inspection and inspection line passes through the underground space in the mining area to be treated;

[0047] During the exploration drilling construction process of the water-stop curtain inspection and exploration line, grouting is carried out to seal the exploratory drilling holes in the exposed voids to form the curtain wall grouting section, which together constitutes the curtain wall grouting section and the solid formation section. Waterproof curtain wall.

[0048] Specifically, the integrated control method for water disaster investigation and trea...

Embodiment 2

[0078] Another specific embodiment of the present invention discloses an integrated treatment method for water disaster investigation and treatment in the old empty area of ​​Linhe Coal Mine, which is improved on the basis of Embodiment 1. Specifically, in step S3 of Embodiment 1, in Before grouting in the exploratory borehole 7 that has been exposed, a hydrological tracer test is carried out, and based on the hydrological tracer test, the key water passages to be blocked are accurately determined and the amount of mud required is estimated.

[0079] Before grouting in the exploration borehole 7 of the exposed void area, when the proposed grouting water plugging curtain exploration borehole detects an old void or old lane, select one or more in the dense feeding borehole 8 The feeding borehole 8 is used as a temporary hydrological observation hole 9. After the monitoring task is completed, the temporary hydrological observation hole 9 and other feeding boreholes 8 are plugged w...

Embodiment 3

[0089] During the process of curtain grouting in the goaf, with the continuous accumulation and elevation of the grouting body, the accumulated water in the goaf outside the curtain body will increase, and the water level will become higher and higher. When the water level is high and the water pressure is high, on the one hand, the curtain body may be impacted and destroyed, and on the other hand, the water may even destroy the closed wall between the mine production system and the external goaf. Once the closed wall is destroyed, A large amount of water in the high-altitude goaf will be poured into the coal mine in an instant, which will bring disastrous consequences to the mine. Due to the unfavorable factors of large terrain fluctuations, large formation dips and fast groundwater flow in the underground void area, the selection of aggregates and grout is particularly critical. Putting conventional crushed stone and other hard aggregates requires a large borehole diameter, ...

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Abstract

The invention relates to a river-side coal mine old goaf water disaster inspection and treatment integrated treatment method. The method comprises the following steps that a waterproof curtain inspection and treatment exploration line is arranged between an earth surface river and a mine area boundary, and the waterproof curtain inspection and treatment exploration line passes through an underground goaf in a to-be-treated mine area; in the exploration drilling construction process on the waterproof curtain inspection and treatment exploration line, grouting plugging is conducted on the interior of an exploration drilling hole of an exposed goaf, a curtain wall grouting section is formed, and the curtain wall grouting section and a solid stratum section jointly form a waterproof curtain wall. By constructing the curtain wall, supply of surface rivers to the old goaf is effectively isolated, the threat of shallow water to mine mining is relieved, the construction period is short, the cost is low, and the blocking effect is good.

Description

technical field [0001] This patent belongs to the technical field of water disaster control in coal mines, and specifically relates to an integrated control method for water disaster investigation and control in old empty areas of Linhe coal mines. Background technique [0002] The mining of underground coal resources will break the original in-situ stress balance, change the mechanical properties of rock and soil and the state of groundwater in a certain range from the coal seam to the surface, and in severe cases will cause uneven subsidence and subsidence of the surface. One of the important factors restricting the safe production of coal mines is water damage. Restricted by mining technology, multi-stage mining history will form multi-level complex abandoned old lanes and goafs. The unevenly distributed and difficult-to-explore underground space has become a space for groundwater to exist and a channel for migration. In particular, the development height of shallow min...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/00E21B33/13E21B47/005E02D5/18E02D3/12C04B28/04C04B111/70
CPCE21B7/00E21B33/13E02D5/18E02D3/12C04B28/04C04B2111/00724C04B2111/70C04B12/04C04B14/02C04B14/06
Inventor 李文平李小琴陈超王绪友宁廷洲刘丙方宋传祥
Owner CHINA UNIV OF MINING & TECH
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