Sandstone aquifer water desorption method

A water layer and sandstone technology, applied in the field of water desorption in sandstone aquifers, can solve the problems affecting the driving speed and poor working environment, and achieve the effect of increasing the driving speed and improving the working environment

Inactive Publication Date: 2015-01-07
SHANDONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, due to the water spraying on the roof of the coal seam, the working environment is poor, and the speed of excavation is affected by digging while exploring.

Method used

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  • Sandstone aquifer water desorption method

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Embodiment Construction

[0011] Embodiments of the invention are described in detail below, but the invention can be practiced in many different ways as defined and covered by the claims.

[0012] Please refer to the accompanying drawings, the present invention provides a water desorption method for sandstone aquifers, comprising: Step 10, analyzing the geology and hydrogeology of the working face; Drilling; step 30, drilling at the arranged pumping hole, and inserting a casing; step 40, connecting the casing to a vacuum pump, and using the negative pressure formed by the vacuum pump to drain the sandstone aquifer fissures and pores Moisture suction; step 50, sealing the drilled holes.

[0013] Further, step 10 includes: analysis of conditions of adjacent mining areas and the stratum of the mining area, roof and floor of the coal seam, geological structure, hydrogeology, water filling factors and threat levels.

[0014] Further, the pumping boreholes in step 20 are arranged in groups, fans, and three...

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Abstract

The invention relates to a sandstone aquifer water desorption method. The sandstone aquifer water desorption method comprises the steps of 10, working face geology and hydrogeology are analyzed; 20, water-pumping drilling positions are distributed according to tunneling roadway construction conditions and mining area geological and hydrogeological conditions; 30, holes are drilled in the distributed water-pumping drilling positions, and casing pipes are inserted in the holes; 40, the casing pipes are connected with a vacuum pump, and water adhering to fractures and holes of a sandstone aquifer is sucked out by the adoption of negative pressure formed by the vacuum pump; 50, the drilled holes are sealed. According to the sandstone aquifer water desorption method, the mining area geology and the hydrogeology are analyzed, and the hydrogeological conditions, the water filling factors and the threatening degree of mining area coal seam exploitation are investigated to provide bases for discharge of the water in the sandstone aquifer; since the water adhering to the fractures and the holes of the sandstone aquifer is sucked out by the adoption of the negative pressure formed by the vacuum pump, it is guaranteed that a coal seam is exploited safely on the basis of not changing the design of an existing mine drainage system, the working environment is improved, and the tunneling speed is increased.

Description

technical field [0001] The invention relates to the field of coal mines, in particular to a water desorption method for a sandstone aquifer. Background technique [0002] Roof sandstone aquifer is an important factor for coal seam roof water inrush. In some mines, due to insufficient understanding of the complexity of the hydrogeological conditions of upper coal mining, the drainage system during coal seam mining cannot meet the disaster resistance ability of coal seam roof sandstone water outburst. Therefore, there are often major accidents in which the working face is shut down or even flooded, causing heavy economic losses. How to extract the coal seam safely without changing the design of the current mine drainage system is not only related to the production continuity of the coal mine, but also related to the safety of people's lives and property. In addition, the working environment is poor due to water spraying on the roof of the coal seam, and the tunneling speed is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F16/00
CPCE21F16/00
Inventor 施龙青邱梅牛超朱鲁
Owner SHANDONG UNIV OF SCI & TECH
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