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Coal face roof water damage space-time control hydrophobic control method

A technology for coal mining face and working face, which is applied to drainage, mining fluids, mining equipment, etc., can solve the problems of wasting groundwater resources, increasing mine drainage costs, aggravating the negative response to water shortages in mining areas, and reducing the safety of the ecological environment. problems, reducing the threat of water damage, reducing the effect of excessive hydrophobicity

Active Publication Date: 2020-10-30
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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  • Claims
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Problems solved by technology

The high-intensity drainage of groundwater in the aquifer not only increases the drainage cost of the mine, but also greatly wastes groundwater resources, which intensifies the current shortage of water resources in the mining area and the negative response of the ecological environment.

Method used

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  • Coal face roof water damage space-time control hydrophobic control method
  • Coal face roof water damage space-time control hydrophobic control method
  • Coal face roof water damage space-time control hydrophobic control method

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Embodiment Construction

[0032] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0033] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprises" and or "comprises" are used in this specification, it means that there are Features, steps, operations and or combinations thereof.

[0034] The present invention is further illustrated in conjunction with the drawings: the coal mining face roof water hazard spat...

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Abstract

The invention discloses a coal face roof water damage space-time control hydrophobic control method. The method comprises the following steps: 1, analyzing coal face geological and hydrogeological conditions; 2, determining the development height of a water guide fracture zone of the coal face; 3, analyzing a water gushing source of the working face roof water damage; 4, predicting the stable water inflow Q < surge > of the roof aquifer in the stoping process of the working face; 5, determining the spatial position of a final hole of the hydrophobic drill hole; 6, determining the number of hydrophobic drill holes; 7, analyzing the water gushing rule of the underground hydrophobic drill hole; and 8, determining the hydrophobic period of the hydrophobic drill hole. Therefore, the final holepositions and the number of the drill holes of the drainage drill holes are controlled in space, the drainage period of the drainage drill holes is controlled in time, and space-time control over drainage prevention and control over water damage of the coal face roof is achieved.

Description

technical field [0001] The invention relates to the technical field of mine water prevention and protection of underground water resources, in particular to a method for preventing and controlling drainage of roof water hazards in coal mining working faces in space and time. Background technique [0002] With the coal resources in the east of my country facing depletion, the strategy of coal westward expansion has become a reality, and the coal seam roof water hazard problem is prominent in the development of coal resources in the Jurassic coalfields in the west. Before mining, the coal mining face takes safety as the goal and concentrates on the roof aquifer construction in the underground Drainage drilling, pre-draining (dry) groundwater in the aquifer to reduce the intensity of roof water inrush during the recovery process is the main means of roof water damage control. For example, the Jinjie Coal Mine in northern Shaanxi has pre-drained 18 coal mining faces. There are up...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/11G06Q10/06G06Q50/02E21F16/00E21B43/30
CPCG06F17/11G06Q10/06315G06Q50/02E21F16/00E21B43/30
Inventor 赵春虎王皓尚宏波王世东石磊薛建坤周振方郭国强
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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