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Overlying strata separation layer grouting filling device and grouting filling system

A technology of overburden separation layer and filling device, which is applied in the direction of fillings, safety devices, mining equipment, etc., can solve the problems of not being able to meet the needs of subsidence, high cost, difficult to promote and popularize, and continuous grouting. Achieve sufficient and uniform grout supply, improve grouting efficiency, and increase grouting volume

Inactive Publication Date: 2007-08-22
KAILUAN GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The shortcomings of the current grouting filling technology for overlying strata detachment are that there are few grouting layers, continuous grouting is not possible, the grouting efficiency is low, and the general injection-production ratio (injection-production ratio is the percentage of the injected material in the mining space) is less than 7%. , so that this technology cannot well meet the needs of subsidence, and it is difficult to promote and popularize because of the high cost

Method used

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  • Overlying strata separation layer grouting filling device and grouting filling system
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  • Overlying strata separation layer grouting filling device and grouting filling system

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Embodiment Construction

[0031] The preferred specific implementation of the overlying rock separation layer grouting filling device is shown in Figure 1. In addition to the grouting pipe 2, it also includes a jacketed wall pipe, the grouting pipe and the grouting hole 5 on the lower wall of the wall pipe. The pipe walls are arranged at intervals in the axial direction, and the mortar is filled into the mine overlying rock separation layer through the grouting hole 5 .

[0032] Overlying rock separation layer grouting reduction technology, that is, on the corresponding surface of the coal mining area, drilling holes are drilled into the overlying rock layer above the coal seam, so that the grouting drilling holes penetrate multiple separation layers, and then the powder is pumped out by a plunger type mud pump. Coal ash or other filling materials are pressed into the gaps in the transfer zones of each separation layer to achieve high-pressure dense filling, slowing down and blocking the continued subsi...

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Abstract

The present invention relates to an overlying strata separation layer slurry-injecting filling equipment and slurry-injecting filling system by using said equipment, belonging to the field of slurry-injecting filling construction technology. It is characterized by that it includes slurry-injecting pipe, wall-protecting pipe cover-mounted on the exterior of slurry-injecting pipe and slurry-injecting holes uniformly arranged in the lower portion of wall-protecting pipe and slurry-injecting pipe. Said invention can adopt multi-point and multi-layer slurry-injecting mode. Besides, said invention also provides the concrete structure of said wall-protecting pipe.

Description

technical field [0001] The invention relates to a grouting device and system for slowing down surface subsidence, in particular to a grouting filling device and a grouting filling system for a mine overlying rock separation layer, belonging to the technical field of grouting filling facilities. Background technique [0002] After the underground coal seam is mined, the stress field of the original rock in the overlying rock is destroyed, and additional stress is generated. In order to achieve a new stress balance, the principal stress changes and transfers sharply, causing the overlying rock to move, deform, break, and even collapse, causing The subsidence of the ground surface will cause damage to farmland and buildings, and cause harm to the ecological environment. For this reason, people often adopt the following preventive methods: one is to adopt passive maintenance on the ground or improve the anti-deformation ability of the building, or relocate the building, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F15/10
Inventor 钟亚平高延法李复殷作如李建民张瑞玺牛学良赵文滨康万库李振刚常永平董荣泉邓智毅杨中东郑庆学郑友刚王跃辰谢会儒张梦岐李文成王成柱李宪忠黄宝柱杨居友马和平王素华张庆松
Owner KAILUAN GRP
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