Adjustable high-adaptability formwork support for large mining height fully-mechanized face and gob-side entry retaining method
A technology of fully mechanized mining face and large mining height, applied in mining equipment, earthwork drilling, filling and other directions, can solve the problems of affecting the final effect of empty entry retaining, poor roofing effect of filling body, unsafe working environment, etc. Achieve the effect of reducing construction cost, strong integrity and easy construction
Inactive Publication Date: 2015-06-17
CHINA UNIV OF MINING & TECH
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Problems solved by technology
However, there are still some disadvantages in the traditional technology of gob-side entry retention. The implementation of gob-side entry retention has disadvantages such as unsafe working environment and high labor intensity.
The project shows that the support and...
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Embodiment Construction
[0023] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0024] Such as figure 1 As shown, the method for retaining roadway along the gob with adjustable multi-suit formwork support in the fully mechanized mining face with large mining height of the present invention, its steps are as follows:
[0025] a. As the working face advances, a plurality of end frames 2 are set at the end of the gob-side entry retaining roadway 1, and at the coal body in front of the end frame 2, an advance gap 3 is dug along the top plate, and in the advance gap 3 Anchor rods and anchor cables 4 are installed on the roof to provide support;
[0026] b. Adjust the frame hydraulic cylinder 5 connected with the adjustable multi-fit formwork support 6, so that the adjustable multi-fit formwork support 6 is in the position where the goaf needs to be filled, estimate the width of the filling body according to the area of the...
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Abstract
The invention relates to an adjustable high-adaptability formwork support for a large mining height fully-mechanized face and a gob-side entry retaining method. The adjustable high-adaptability formwork support for the large mining height fully-mechanized face and the gob-side entry retaining method are applicable to the large mining height working face and complicated roof conditions. The adjustable high-adaptability formwork support comprises an inner box body and an outer box body which are combined in a nested mode, a pre-excavated niche is formed in the front of an end support of a stoping face, and a top plate in the niche is supported through an anchor pole and an anchor rope; the adjustable high-adaptability formwork support is arranged behind the end support, a reinforcing mesh is laid in the adjustable high-adaptability formwork support, filling bags are hung in the adjustable high-adaptability formwork support, and a counter-pulled anchor pole is installed in an installing hole of a side plate anchor pole; pasty fluid or high-water-material grout is injected into the filling bags; a side plate oil cylinder is adjusted after filling bodies are solidified, side plates are pushed and expanded, the support is moved as a whole, and construction is completed. The method is safe, reliable, high in integrity, high in mechanization degree and high in adaptability to different mine pressure conditions and different top plate conditions of a roadway, and the filling bodies are regularly formed.
Description
technical field [0001] The invention relates to a support and a gob-side entry retaining method, in particular to an adjustable multi-suitable formwork support and a gob-side entry retaining method suitable for use under the conditions of a large mining height working face and a complex roof. Background technique [0002] As a technology to improve the recovery rate of coal resources and alleviate the tension of mining replacement, gob-side entry retention has been promoted in various geological conditions and gas emissions in China. At present, with the expansion of the application of gob entry retention and the development of technology, great progress has been made in the research and development of mechanically integrated gob entry entry retention and filling materials for gob entry entry retention. However, there are still some disadvantages in the traditional technology of gob-side entry retention. The implementation of gob-side entry retention has disadvantages such a...
Claims
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Patent Timeline
Login to view more IPC IPC(8): E21F15/04E21F15/00
CPCE21F15/00E21F15/04
Inventor 陈勇柏建彪陈延涛郝胜鹏徐营王襄禹闫帅李国杨
Owner CHINA UNIV OF MINING & TECH
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