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Branch roadway lower port blocking structure and construction method

A technology of port and roadway, which is applied in the sealing structure and construction field of the lower port of the branch road, which can solve the problems of complex sealing process of the lower port of the branch road, affecting safe production, and unbalanced mining and charging, so as to shorten the solidification time and improve the efficiency , The effect of simple construction method

Active Publication Date: 2020-10-13
宁夏久威矿山安全工程有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing plugging process of the lower port of the branch roadway is complex, time-consuming, and labor-intensive. There are also problems of unbalanced mining and charging, and cross-wind problems, which affect safe production

Method used

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  • Branch roadway lower port blocking structure and construction method
  • Branch roadway lower port blocking structure and construction method
  • Branch roadway lower port blocking structure and construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] In the continuous mining and charging process, the lower port of the branch road needs to be blocked, the sealing mechanism of the lower port of the branch road needs to ensure the sealing and stability, and the lower port of the branch road needs to be quickly blocked.

[0045] A plugging structure for the lower port of a branch road, which is provided with an isolation cloth in the mold bag, the isolation cloth extends from the lower edge of the mold bag along the second direction and the third direction, the isolation cloth and the mold bag are closely connected, and the mold bag The space inside the bag is divided into multiple sections along the first direction. Wherein the mold bag can be made of nylon fiber cloth, and the nylon fiber cloth is also provided with a waterproof layer, and the isolation cloth and the mold bag can be made of the same material. The upper edge surface of the mold bag is connected with the roadway roof, and the lower edge surface is conne...

Embodiment 2

[0056] A plugging structure for the lower port of a branch road. An isolation cloth is arranged in the mold bag, and the isolation cloth extends from the lower edge of the mold bag along the second direction and the third direction, and divides the space inside the mold bag into multiple sections along the first direction. There is an interval in the third direction between the upper edge surface of the mold bag and the upper end of the isolation cloth, a fixing part is arranged on the outer side of the mold bag, and an exhaust hole is also arranged on the mold bag. Reinforcing ribs are also arranged in each segment on the mold bag. Wherein the inside of the mold bag can be provided with 5 segments, or more segments, and the grouting port is arranged on the upper part of the 1st segment, the 3rd segment and the 5th segment, that is, respectively on the two sides of the first direction. Set grouting ports at the two ends and in the middle; thus, grouting can be performed first ...

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Abstract

The invention discloses a branch roadway lower port blocking structure and a construction method, and relates to the technical field of coal mining. Isolation cloth is arranged in a mold bag for branch roadway blocking and extends in the second direction and the third direction, and the inner space of the mold bag is divided into multiple segments in the first direction; a gap is reserved betweenthe upper edge of the mold bag and the upper end of the isolation cloth in the third direction, fixed components are arranged on the outer side of the mold bag, and an exhaust hole is further formed in the mold bag; and reinforcing bars are arranged in the various segments on the mold bag. During construction, the mold bag and roadway surrounding rock are firstly arranged to be fixed, and the section size of the mold bag is larger than the section size of a roadway; during grouting construction, grouting can be carried out starting from the segment on one side, the segments are sequentially filled with grout in sequence, multiple via holes can be arranged between the isolation cloth at different heights, grouting is started from the various segments, and blocking pillars are formed; and anexpansion material is injected into the gap space, and blocking is completed. By means of the structure, rapid blocking of the roadway is achieved, the structure and roadway surrounding rock are combined tightly, and the segmented pillar forming structure is stable.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to a plugging structure and construction method for the lower port of a branch roadway. Background technique [0002] In coal mining, the continuous mining and continuous charging process effectively solves the problem of "three-down" coal mining. [0003] The continuous mining and filling process is based on the room-and-pillar and Wangerville coal mining methods, and the short-wall continuous mining and filling coal mining process is carried out. A plurality of strip coal pillars; then the continuous mining machine is used to mine the strip coal pillars at intervals in sequence, and fill them at intervals after the roof is stable, in which the cement slurry and gangue pass through the grouting system and the gangue conveying system respectively, and arrive at the working face for mixing. Inject into the filling branch roadway to complete the filling and mining process. The m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F15/00E21D9/14E21D11/10E21D20/00
CPCE21F15/005E21F15/00E21D9/14E21D11/10E21D20/00
Inventor 古全忠王新郭方群郑永胜李全水孟兆颖胡成成
Owner 宁夏久威矿山安全工程有限责任公司
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