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A method for coal mine roadway excavation along the gob

A technology for coal mines and roadways, applied in mining equipment, earth-moving drilling, shaft equipment, etc., can solve the problems of high maintenance costs, unstable roadways, and large roadway deformation during roadway service, and achieve high roadway stability and roadway formation. The effect of small deformation and fast lane formation

Active Publication Date: 2022-04-08
西安中铁工程装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a method for digging roadways along the goaf in coal mines, which solves the difficulties in roadway formation in the prior art, the large deformation of the roadway after the roadway is formed, the high maintenance cost during the roadway service period, and the instability of the roadway on the side of the goaf. safety issues

Method used

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  • A method for coal mine roadway excavation along the gob
  • A method for coal mine roadway excavation along the gob
  • A method for coal mine roadway excavation along the gob

Examples

Experimental program
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Embodiment 1

[0029] Such as Figure 1-3 As shown, a method of tunneling along the goaf in a coal mine is adopted. This method adopts the principle of pipe jacking construction. At the side coal pillar of the coal mine that has been mined, the main jacking cylinder 16 of the pipe jacking machine is arranged in the starting pit. and the thrust of the relay ring 12, jacking is carried out along the coal pillar at the boundary of the goaf, and after jacking a segment 6, install the second segment 6 to continue jacking, and continue to push in segments until the pipe jacking head is pushed forward Up to the receiving position, the coal / rock mass peeled off by the cutter head 1 during the jacking process is transported out of the roadway through the supporting transportation system 7 at the rear.

[0030] Using the pipe jacking machine system and the construction principle of the pipe jacking machine, at the side coal pillar of the coal mine that has been mined and close to the goaf, by means of...

Embodiment 2

[0040] A pipe jacking machine for gob-side tunneling in coal mines, which mainly includes a cutter head 1, a shield body 2, a main drive 3, a horizontal hinged oil cylinder 4, a screw conveyor 5, a segment 6, a transportation system 7, Grouting drag reduction system 8, air compressor 9, system pipeline 10, grouting hole 11, relay ring 12, transformer 13, intelligent measurement and control system 14, top ring 15, main jacking cylinder 16, jacking bracket 17, jacking Iron 18 and back lean 19.

[0041] Wherein the transport system 7 can be a mine car or a belt conveyor. The intelligent measurement and control system 14 can realize the monitoring and control of the pressure monitoring of the overlying rock layer on the segment during the excavation process, the excavation parameters of the cutter head, the posture of the pipe jacking machine, the grouting pressure, the thrust of the main jacking cylinder and other related construction parameters of the pipe jacking machine.

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Abstract

The method of the present invention adopts the principle of pipe jacking construction. At the side coal pillar of the coal mine backed working face close to the goaf, by means of the thrust of the main jacking oil cylinder and the relay ring of the pipe jacking machine arranged in the starting pit, the coal along the boundary of the goaf The column is jacked, and after jacking one segment, install the second segment and continue jacking, segmented in turn until the pipe jacking head is pushed to the receiving position, and the coal / coal / The rock mass is transported out of the roadway through the screw conveyor and its supporting transportation system at the rear; the present invention adopts the pipe jacking machine to carry out roadway along the goaf along the coal pillar near the goaf side of the coal mine, and uses high-strength segments to form the roadway, and the roadway is excavated High work efficiency, good roadway forming effect, and high operation safety. The roadway dug along the goaf by the pipe jacking machine is used as the air return roadway or mechanical transportation roadway of the lower section working face, and the coal pillars in the section are recovered, so as to realize no Coal pillar mining; the roadways excavated along the goaf can also be used as gas drainage lanes, drainage lanes, and measure lanes in the working face of the lower section.

Description

technical field [0001] The invention belongs to the technical field of gob-side entry in coal mine mining without coal pillars, and in particular relates to a method of gob-side entry in coal mines. Background technique [0002] At present, there are two main types of tunneling systems for gob-side entry in coal mines, which are drill-and-blast method and cantilever-header tunneling. These two system methods for gob-side entry have their own limitations. [0003] Drilling and blasting method is used to excavate along the goaf, mainly adopting manual or mechanical rock drilling to drill holes, charging and blasting, and slag is discharged through the belt conveyor system or scraper conveyor, rail mine car, trackless rubber-tyred vehicle, and corresponding Drilling methods for running roadway maintenance. After the upper section of the coal mine is mined, the overlying rock in the gob area makes it difficult to form a roadway and the roadway deforms greatly after the roadway ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00E21D9/087E21D11/08E21D11/14
CPCE21D9/00E21D9/087E21D11/08E21D11/14
Inventor 刘文学高建田卫强邱胜进
Owner 西安中铁工程装备有限公司