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Coal roadway rapid support method in unstable surrounding rock condition

A technology of surrounding rock and coal roadway, which is applied in the field of rapid support of coal roadway, can solve the problems of low efficiency, instability of actual excavation, and mismatch between excavation and support, so as to improve the efficiency of rapid excavation, reduce labor intensity, and ensure Sustainability Effects

Inactive Publication Date: 2015-07-29
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention overcomes the problem of low actual excavation efficiency caused by the mismatch between the excavation and support during the comprehensive mechanized rapid excavation of the coal roadway in the prior art, and provides a rapid coal roadway under unstable surrounding rock conditions that can improve the comprehensive mechanized excavation efficiency of the coal roadway. Support method

Method used

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  • Coal roadway rapid support method in unstable surrounding rock condition
  • Coal roadway rapid support method in unstable surrounding rock condition

Examples

Experimental program
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Embodiment 1

[0022] Embodiment one: if figure 1 , figure 2 As shown, in this embodiment, the rapid support method for coal roadway under unstable surrounding rock conditions, taking the excavation section with a height of 4.3m and a width of 5.6m as an example, includes the following steps:

[0023] Step 1, store the supporting material 1 on the mesh conveying frame 5 of the rock bolter 3 and the material platform of the bolter 7;

[0024] Step 2. When the bolter 7 is continuously driving the coal roadway forward, at first the roof and the two gangs of the support section are hung with metal mesh for advance support, and then the bolter on the bolter 7 is used to carry out the advance support on the support section. 4 anchor rods are drilled on the top plate, and 2 anchor rods are drilled on each of the two sides;

[0025] Step 3: Carry out step 3 at the same time as step 2, use the bolter on the bolter 3 at the rear end of the bolter 7 to make up 2 bolts on the top plate of the suppor...

Embodiment 2

[0029] Embodiment two: if figure 1 , figure 2 As shown, this embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is that in the step 5, the explosion-proof rubber-tyred vehicle 2 sends the support material 1 to the tail of the bolter 3 , with the truck-mounted crane 4 of the explosion-proof rubber-tyred car 2 to reload to the rear end of the bolter 3 mesh delivery frame 5.

Embodiment 3

[0030] Embodiment three: as figure 1 , figure 2 As shown, this embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference lies in: the arrangement of the rocker rig on the rocker truck 3 in the step 3 and the anchor rod of each support section The spacing matches the spacing of adjacent support sections.

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Abstract

The invention discloses a coal roadway rapid support method in an unstable surrounding rock condition. Support processes are resolved, and staggered supplement drilling is performed, that is, while a driving anchor machine complete one tunneling cycle, metal nets are hung on the roof and two slopes of the support section, and an anchor rod drilling machine on the driving anchor machine completes pre-support of roof anchor rods and slope anchor rods in one support section, accordingly, the empty-support distance is reduced, and the operation safety is guaranteed. Subsequent cycle is cut, an anchor rod drill carriage and an anchor cable trolley are used for performing reinforcement support on the staggered supplement anchor rods of the roof and the two slopes of the support section, the three times of support are synchronous in the aspect of time and are performed successively spatially, and eventually, the whole section support is completed. On the basis of prior support technologies, by the reasonable combination and matching and adjusting of construction sequences, the section support is resolved into a plurality of support steps, and all the steps are connected continuously, accordingly, the total support efficiency and the tunneling efficiency are matched, and the coal roadway rapid tunneling efficiency in the unstable surrounding rock condition is improved on the basis of the guarantee of construction safety.

Description

technical field [0001] The invention relates to a rapid support method for a coal roadway, in particular to a rapid support method for a coal roadway under unstable surrounding rock conditions. Background technique [0002] Comprehensive mechanized rapid excavation of coal roadway is a process that integrates cutting, loading, transfer, support, auxiliary transportation, etc., and any link restricts the excavation efficiency of the entire system. Existing bolt-digging equipment to realize rapid excavation must first solve the matching problem of excavation and support, the problem of supporting equipment, and the problem of auxiliary transportation. [0003] In the current integrated equipment for digging and anchoring, the driving efficiency of the roadheader in the coal roadway and semi-coal roadway is an average of one meter every 6 minutes, while the current bolter drills a bolt for 6-10 minutes, and each section requires It takes 20 minutes to complete the support of a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D20/00E21C25/66
CPCE21D20/003E21C25/66
Inventor 宋丹李建斌卓兴建王琴王锴江帅陈耕
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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