A plugging structure and construction method for the lower port of branch roadway

A technology of port and roadway, which is applied in the field of plugging structure and construction of the port under the branch road, which can solve the problems of affecting safety production, long time consumption, and heavy labor, so as to ensure the impact resistance and stability, and avoid the deformation of the plugging structure , The effect of simple construction method

Active Publication Date: 2022-04-05
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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  • A plugging structure and construction method for the lower port of branch roadway
  • A plugging structure and construction method for the lower port of branch roadway
  • A plugging structure and construction method for the lower port of branch roadway

Examples

Experimental program
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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

A plugging structure and construction method for a lower port of a branch roadway, relating to the technical field of coal mining. The mold bag for branch lane sealing is provided with isolation cloth, which extends along the second direction and the third direction, and divides the inner space of the mold bag into multiple sections along the first direction; between the upper edge of the mold bag and the upper end of the isolation cloth along the second There are intervals in the three directions, fixed parts are arranged on the outside of the mold bag, and vent holes are also arranged on the mold bag; reinforcing ribs are also arranged on each section of the mold bag. During construction, the mold bag and the surrounding rock of the roadway are first set and fixed, wherein the cross-sectional size of the mold bag is larger than the cross-sectional size of the roadway; for grouting construction, the grouting can be started from the segments on one side and filled in sequence along the second direction. , It is also possible to set multiple passing holes at different heights between the isolation cloths, and start grouting from each segment to form a plugging pillar; inject expansion materials into the interval space to complete the plugging. The structure realizes the rapid sealing of the roadway, and is closely combined with the surrounding rock of the roadway, and the segmented column 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 Patents(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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