Method for depression-angle negative-pressure exploration and discharge of accumulated water in goaf area of mine

A technology for exploring and releasing water in old empty areas, applied in drainage, mining equipment, earthwork drilling and mining, etc., can solve problems such as poor safety controllability and existing safety risks, and achieve the effect of reducing impact and strong controllability

Inactive Publication Date: 2019-07-30
CHINA COAL XINJI ENERGY CO LTD
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Problems solved by technology

[0004] The invention proposes a method for detecting and releasing accumulated water in the old goaf under negative pressure at the depression angle of the mine, which can solve the technical problems of poor safety controllability and safety risks in the existing method of detecting and releasing the water in the old goaf

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  • Method for depression-angle negative-pressure exploration and discharge of accumulated water in goaf area of mine
  • Method for depression-angle negative-pressure exploration and discharge of accumulated water in goaf area of mine
  • Method for depression-angle negative-pressure exploration and discharge of accumulated water in goaf area of mine

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Embodiment Construction

[0025] In order to make the implementation objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the present invention. Not all examples.

[0026] Such as figure 1 As shown, the method for detecting and releasing water in an old goaf with negative pressure at a depression angle of a mine in this embodiment includes the following steps:

[0027] S100, survey and measurement conditions;

[0028] S200. Estimate the water accumulation in the old goaf area;

[0029] S300. Develop a water exploration and release plan;

[0030] S400, drainage and drilling construction;

[0031] S500. Select a pumping scheme for pumping.

[0032] The following is a specific description in combination with specific application cases

[0033] The embodiment of the ...

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Abstract

The invention relates to a method for depression-angle negative-pressure exploration and discharge of accumulated water in a goaf area of a mine. The method can solve the technical problems of poor safe controllability and the presence of safety risk of conventional exploration and discharge of the accumulated water in the goaf area. The method includes the following steps that S100, the working condition is surveyed and measured; S200, the accumulated water amount in the goaf area is estimated; S300, a plan for exploration and discharge of the water is made; S400, drainage boreholes are constructed; and S500, a pumping scheme is selected to pump the water. According to the method for depression-angle negative-pressure exploration and discharge of the accumulated water in the goaf area ofthe mine, depression-angle drilling is conducted in advance in the roadway, the accumulated water in the surrounding goaf area below the roadway is explored and discharged in advance, the roadway is located on the upper part of a water body in the goaf area, thus the water exploration and discharge process is absolutely safe, the water discharge work can be conducted in advance, the impact on roadway driving is reduced, the water discharge process does not rely entirely on water pressure differential artesian flow, but the water is pumped in the negative-pressure state through an air pressingdevice, and thus the safe reliability and controllability of the water exploration and discharge process is higher.

Description

Technical field [0001] The invention relates to the field of design and construction of boreholes for detecting and discharging accumulated water in an old goaf, and in particular relates to a method for detecting and releasing accumulated water in an old goaf under negative pressure at a depression angle. Background technique [0002] Water disaster is one of the five major disasters in mines. According to statistics, water seepage accidents in old goafs account for 85% of mine water disasters. Accurately determine the range and volume of water accumulation in the old goaf area, and adopt a technically feasible and safe operation plan for drainage, which can not only eliminate hidden water hazards on the mining face in time, and ensure the safety and reliability of the water detection and release process, but also To a certain extent, it can reduce various costs in the process of drainage of accumulated water in the old goaf, improve the efficiency of drainage, and reduce the c...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F16/00
CPCE21F16/00
Inventor 廉法宪宋辉
Owner CHINA COAL XINJI ENERGY CO LTD
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