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Comprehensive treatment method for mountain green coal water disasters in complex structure area

A comprehensive treatment and complex technology, applied in earthwork drilling, shaft lining, tunnel lining, etc., to achieve major social benefits, alleviate continuous decline, and reduce the risk of catastrophic Austrian ash water inrush

Pending Publication Date: 2021-11-09
中国煤炭地质总局水文地质局
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a comprehensive control method for mountain green coal water hazards in complex structural areas, aiming to solve the problems of the prior art

Method used

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  • Comprehensive treatment method for mountain green coal water disasters in complex structure area
  • Comprehensive treatment method for mountain green coal water disasters in complex structure area
  • Comprehensive treatment method for mountain green coal water disasters in complex structure area

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045]On the basis of the above method, in this embodiment, before the step S4, a step S2 is also included to analyze and study the relevant geological information of the target layer 6 in the past to form a preliminary comprehensive treatment plan. During treatment, a preliminary comprehensive treatment plan is formed through the analysis and research of relevant geological information on the previous treatment target layer 6, which effectively improves the effect of follow-up treatment.

[0046] Based on the above method, the confirmation of the treatment target layer 6 is usually based on the accumulation of previous coal mine data, and the above-mentioned relevant geological information usually includes: (1) the depth and water content of the aquifer, and the water content includes the water level and water abundance: (2) ) The lithology of the water-resisting layer and the thickness of the effective water-resisting layer, etc.

[0047] In addition, the preliminary compreh...

Embodiment 2

[0054] On the basis of Embodiment 1, in this embodiment, step S1 is also included before the step S2 to determine the governance target layer 6 according to the governance purpose and tasks, combined with the geological and hydrogeological conditions of the governance area. During treatment, according to the purpose and tasks of treatment, combined with the geological and hydrogeological conditions of the treatment area, determine the treatment target layer 6, and lay the foundation for the subsequent determination of the preliminary comprehensive treatment plan.

[0055] Based on the above method, the geological and hydrogeological conditions of the above-mentioned treatment area usually include the nature of the formation, the depth and water content of the aquifer, the lithology of the aquifer, and the thickness of the effective aquifer, etc.

[0056] Based on the above method, the specific steps of the method provided in this embodiment are as follows:

[0057] S1: Accordi...

Embodiment 3

[0063] On the basis of any one of Embodiment 1 to Embodiment 2, in this embodiment, a step S3 is also included between the step S2 and the step S4, according to the determined preliminary comprehensive management plan, in the treatment area Select a suitable location on the ground surface 10 to construct the borehole 1, and construct the straight hole section 2 and the ramp section 3 to the window entry point in sequence. During treatment, select a suitable location on the surface 10 of the treatment area to construct the borehole 1, and construct the straight hole section 2 and the ramp section 3 to the window entry point in order, so as to construct multiple horizontal branch holes 4 in sequence, and the construction is more convenient .

[0064] Based on the above scheme, the above-mentioned borehole opening 1 is located on the ground surface 10, the straight hole section 2 is vertically distributed, and its upper end communicates with the borehole opening 1, and the deflec...

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Abstract

The invention relates to a comprehensive treatment method for mountain green coal water disasters in a complex structure area. The method comprises the following specific steps that a horizontal branch hole is drilled from a window entry point in a treatment target layer, circulating liquid is injected at the same time, and related data are recorded; the recorded data are analyzed and compared with existing data, and the development part, the spatial form and the scale of a vertical water guide structure and the fracture development part and the connectivity of the treatment target layer are judged; when the leakage amount of the circulating liquid is abnormal, a drill is withdrawn to conduct grouting operation, and grouting reinforcement is conducted on the area; and after grouting reaches the preset pressure, grouting is stopped, hole sweeping operation is carried out, and drilling continues until construction is completed. The method has the beneficial effects that grouting transformation of a target aquifer is realized, the integrity of a coal seam floor is enhanced, the risk of disastrous ordovician limestone water inrush of the coal seam floor is further reduced, the working efficiency is greatly improved, and the safety of workers is guaranteed; and meanwhile, underground water resources can be protected, and the water-preserved mining effect is achieved.

Description

technical field [0001] The invention relates to the technical field of water hazard control in coal mines, in particular to a method for comprehensively controlling water hazards in mountains and green coal in complex structural areas. Background technique [0002] A large number of coal mine water inrush cases show that most of the coal seam floor water inrush is caused by the structure, especially the disastrous water inrush is caused by the water-conducting structure. In fact, all coal mining enterprises require a lot of geophysical prospecting, drilling and water prevention and control work before mining, but the occurrence of floor water inrush accidents still cannot be avoided. At present, comprehensive geophysical prospecting and drilling technologies such as 3D seismic and underground transient electromagnetic have been widely used in coal mining enterprises and have achieved certain results. [0003] As mine mining is increasingly threatened by coal seam floor wate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10E21F17/00E21F17/18
CPCE21D11/10E21F17/00E21F17/18
Inventor 李冲陈少帅杨斌张凯杨志鸿秦梦月
Owner 中国煤炭地质总局水文地质局
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