A water hazard detection method for water prevention and control in coal mine working face
A detection method and technology of working face, which can be used in surveying, mining equipment, mining equipment, etc., and can solve the problem of limited available space, difficult to conceal the development scale and distribution of water-conducting structures, three-dimensional interpretation, and low data collection density. and other problems to achieve the effect of preventing the occurrence of water damage on the working surface
Active Publication Date: 2017-01-04
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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Problems solved by technology
Mine transient electromagnetic method has been vigorously promoted in the detection of underground water hazards in coal mines due to its high construction efficiency and directional characteristics. However, the processing and interpretation methods of this method are mainly transplanted from ground transient electromagnetics, and a set of methods that are fully suitable for underground conditions has not yet been developed. data interpretation techniques
The above-mentioned mine electrical methods are mainly carried out in underground roadways. Due to the limited space available, the electrical method observation method itself constitutes a major constraint. It cannot implement high-density observations like ground exploration, resulting in low data collection density and inaccessibility. 3D observation data
In view of the above reasons, most of the mine electrical methods still use the two-dimensional section interpretation method in the current application, and it is difficult to give a comprehensive three-dimensional interpretation of the spatial position, development scale and distribution shape of various hidden containment / water-conducting structures.
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[0029] The present invention is described in detail below in conjunction with accompanying drawing and specific embodiment:
[0030] A water hazard detection method for water prevention and control in coal mine working face:
[0031] 1) According to the actual geological conditions of the mining area that needs to be detected by the three-dimensional electromagnetic method, draw a scaled-down plan of the working face of the mining area. Drainage borehole information;
[0032] 2) Count the number and location of water exploration boreholes, water discharge boreholes and gas drainage boreholes in the detection area. If the density of boreholes in the roadway is sparse, use the downhole drilling rig to supplement the boreholes to ensure that adjacent drill holes in the same roadway The maximum spacing of holes shall not exceed 50m, and the vertical depth of each drill hole shall not be less than 30m;
[0033] 3) Divide the mining area along the advancing direction of the workin...
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The invention relates to the technical field of water prevention and control in coal mine working faces, in particular to a water hazard detection method for water prevention and control in coal mine working faces. It uses working face transportation lanes, return air lanes, cut holes, water exploration / drainage boreholes and gas drainage boreholes, as well as zone boundary boreholes for zoning the mining area to arrange survey lines. A combined detection method of hole-lane, such as transmitting-receiving in hole, transmitting in hole-lane receiving, transmitting in hole-across-hole receiving, etc., input audio electromagnetic signal in transmitting electrode and collect potential difference data with receiving electrode, adopt tomography or The three-dimensional inversion method is used to process and interpret the observation data. The invention realizes the real three-dimensional electromagnetic data acquisition in the coal mine, and can accurately find out the information such as the spatial position, development scale and distribution form of various hidden / water-conducting structures inside the working face and on the top / bottom floor. Water disaster prevention and control provides strong technical support.
Description
[0001] 1. Technical field: [0002] The invention relates to the technical field of water prevention and control in coal mine working faces, in particular to a water hazard detection method for water prevention and control in coal mine working faces. Three-dimensional electromagnetic observation system for cloth shape and so on. [0003] 2. Background technology: [0004] Despite the impact of environmental protection pressure and the impact of clean energy, coal still occupies a dominant position in my country's energy structure. The latest statistics show that in 2013, coal accounted for 67% of my country's energy consumption. The development of my country's shallow coal resources has been difficult to meet the needs of the current rapid development of the national economy, and the exploration and mining of underground resources have gradually extended to the deep, which not only puts forward higher requirements for various geophysical exploration methods, but also leads to A...
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IPC IPC(8): E21F17/18E21B47/00
Inventor 鲁晶津范涛石显新王继矿赵兆宁殿艳
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP