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
CN110067597AInactive Publication Date: 2019-07-30CHINA COAL XINJI ENERGY CO LTD
2 Cites 6 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA COAL XINJI ENERGY CO LTD
Publication Date
2019-07-30
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More