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Active and passive support-coupled integral coordination bearing structure for arched roadway and method

An overall coordinated and load-bearing structure technology, which is applied in the direction of supporting the top beam of the mine roof, tunnel, earthwork drilling and mining, etc., can solve the problems of inconvenient disassembly, small bearing capacity, and low recovery rate

Active Publication Date: 2021-09-10
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above support methods have problems such as unstable support, small bearing capacity, inconvenient disassembly and low recovery rate.

Method used

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  • Active and passive support-coupled integral coordination bearing structure for arched roadway and method
  • Active and passive support-coupled integral coordination bearing structure for arched roadway and method
  • Active and passive support-coupled integral coordination bearing structure for arched roadway and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] An arched roadway with active and passive support coupling overall coordinated load-bearing structure, such as Figure 1~7(c) As shown, it includes a plurality of miners’ steel sheds distributed in parallel, and each miners’ steel shed includes a semicircular top beam 1 and a column leg 2 at the bottom of the top beam 1, and both the top beam 1 and the column leg 2 are made of miners’ steel. Five holes are evenly arranged on the beam 1, and the three holes in the center are anchor cable holes, which are used to cooperate with the anchor cable 5 to connect the miner's steel shed with the roadway, and the remaining two holes are anchor holes, which are used to connect with the anchor rod 4 Cooperate to connect the miner's steel shed with the roadway; each column leg 2 has an anchor hole on the web plate in the middle, which is used to cooperate with the anchor rod 4 to connect the column leg 2 with the roadway. Tightening nuts, trays and backing plates, pre-tightening nut...

Embodiment 2

[0084] An arch roadway active and passive support coupling overall coordination load-bearing structure, as shown in embodiment 1, the difference is that the longitudinal connection device includes several-shaped steel 7 and channel steel B 3 between the sheds, several several-shaped steel 7 The opening of the font faces upward to form a limit groove 7.1, and the center of the top beam 1 is embedded in the limit groove 7.1. There is a circular hole in the center of the limit groove 7.1, which is used in conjunction with the anchor cable hole in the center of the top beam 1 ;

[0085] The channel steel B 3 between the sheds is located between two adjacent steel sheds for miners. There is a round hole A at both ends of the channel steel B 3 between the sheds, and a round hole B 7.2 is opened at the two ends of the glyph steel. The hole A and the round hole B 7.2 are connected together by a pin 8 .

Embodiment 3

[0087] An overall coordinated load-bearing structure of an arched roadway with active and passive support coupling, as shown in Embodiment 2, the difference is that the width of the limiting groove 7.1 is slightly larger than the web width of the top beam 1, so that the top beam 1 Embedded in the limit groove 7.1, after embedding, the anchor cable hole in the center of the top beam 1 corresponds to the circular hole in the center of the limit groove 7.1, the anchor cable is installed, and the two ends of the two-end flanges of the girder steel 7 The width is slightly smaller than the width of the web of the channel steel B 3 in the shed. The channel steel B is connected with the several-shaped steel, so as to realize the connection between two adjacent miners' steel sheds and form a whole.

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Abstract

The invention relates to an active and passive support-coupled integral coordination bearing structure for an arched roadway and a method, and belongs to the field of coal mine safety support. The structure comprises a plurality of miner steel sheds distributed in parallel, each miner steel shed comprises a top beam and column legs, five holes are uniformly formed in the top beam, three holes in the center are anchor cable holes, the other two holes are anchor rod holes, and an anchor rod hole is formed in a web plate in the middle of each column leg; an anti-impact connecting component is arranged between the top beam and each column leg; two rows of parallel inter-shed channel steel A are laid on the parts, close to the two sides, of a roadway bottom plate, and the bottoms of the column legs of each miner steel shed are inserted into the inter-shed channel steel A; and two adjacent miner steel sheds are connected into a whole through a longitudinal connecting device. According to the structure and method, yielding can be buffered, tight and strong connection between an active supporting structure and a passive supporting structure are achieved, stress and deformation are coordinated, the integrity of the supporting structure is greatly improved, the supporting quality of the roadway is improved for a mining roadway, and meanwhile floor heaving can be prevented to a certain degree.

Description

technical field [0001] The invention relates to an integral coordinated bearing structure and method for coupling active and passive support of an arched roadway, and belongs to the technical field of coal mine safety support. Background technique [0002] As coal mining enters the deep part, under the joint action of the advanced bearing pressure and the original stress of the working face, dynamic disaster accidents such as rock burst are prone to occur in the mining roadway. At the moment when rock burst occurs, a large amount of elastic impact energy will be released in the form of waves, including both tensile impact energy and compression impact energy. These impact energy will make the surrounding rock of the mining roadway continue to stretch and compress. If it is not supported in time, the surrounding rock will be broken, separated from the layer and even become unstable, and even the support systems such as anchor rods and cables will be broken, resulting in coal ...

Claims

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Application Information

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IPC IPC(8): E21D11/00E21D11/14E21D11/18E21D21/00E21D17/00E21D17/01F16F15/02
CPCE21D11/00E21D11/14E21D11/18E21D21/00E21D17/00E21D17/01F16F15/02F16F2224/02F16F2228/06
Inventor 马其华迟利辉马尉翔牛世伟白光超
Owner SHANDONG UNIV OF SCI & TECH
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