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Roadway floor reinforcing system and construction method thereof

A construction method and bottom plate technology, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., to achieve the effect of increasing stability and saving materials

Inactive Publication Date: 2016-07-13
HUAINAN MINING IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is how to reduce the waste of concrete grouting layer construction, grouting pipe and ensure continuous grouting

Method used

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  • Roadway floor reinforcing system and construction method thereof

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Effect test

Embodiment 1

[0023] Such as figure 1 As shown, a roadway floor reinforcement system includes shallow grouting holes 1, middle grouting holes 2 and deep grouting holes 3 on the roadway floor, and the shallow grouting holes 1, middle grouting holes 2 and deep grouting holes The depth of the grouting holes 3 increases successively, and the shallow grouting holes 1, the middle grouting holes 2 and the deep grouting holes 3 are arranged in multiple arrays, and each shallow grouting hole 1, middle grouting hole 2 and deep grouting hole The grouting holes 3 are arranged alternately; the system also includes a grouting hole sealing device 4 for grouting into each grouting hole. The grouting hole sealing device 4 is commonly used safety construction equipment in the field of coal mine production, and mainly includes an expansion capsule and a grouting pipeline that runs through the expansion capsule. The expansion capsule is connected with an expansion pipeline, and the expansion pipeline fills the...

Embodiment 2

[0028] A construction method of the roadway floor reinforcement system, comprising the steps of:

[0029] Step 1: Construct shallow grouting hole 1 on the bottom plate of the roadway, the hole depth is 600mm, and the row spacing: 2000×3000mm.

[0030] Step 2: After the construction of the shallow grouting hole 1 is completed, insert the grouting hole sealing device 4 into the grouting shallow hole, connect the grouting pipe and start grouting. The grouting cement is Portland cement that hardens quickly. Generally, the ratio of 1:1.5 is used, the grout is exposed and then stopped, and the hole is replaced for grouting, and this cycle is repeated until the grout and the shallow surrounding rock are condensed into a layer of curtain 5.

[0031] Step 3: After the shallow grouting hole 1 is grouted to form the curtain 5, the grouting hole 2 is under construction, the hole depth is 1500mm, and the row spacing: 2000×3000mm, forming a five-pattern arrangement with the shallow grouting...

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Abstract

The invention belongs to the technical field of mine safety construction, and particularly relates to a roadway floor reinforcing system and a construction method thereof. The roadway floor reinforcing system comprises a plurality of shallow grouting holes, a plurality of medium grouting holes and a plurality of deep grouting holes, wherein the depths of the shallow grouting holes, the medium grouting holes and the deep grouting holes are gradually increased, the shallow grouting holes, the medium grouting holes and the deep grouting holes are all distributed in an array mode, and the shallow grouting holes, the medium grouting holes and the deep grouting holes are distributed in a staggered mode. The roadway floor reinforcing system further comprises a grouting hole packer used for injecting grout into all the grouting holes. By means of the roadway floor reinforcing system and the construction method thereof, a geological anomaly zone, a fracture zone and an argillization floor zone are effectively reinforced, the stability of floor surrounding rock is improved, and the problem of floor heaving is effectively solved; by adopting the grouting hole packer to replace an original grouting steel pipe for grouting, materials are saved, and meanwhile the problem of unfirm floor grouting packing is solved. Thus, the floor grouting reinforcing technology is effective, economical and easy to implement.

Description

technical field [0001] The invention belongs to the technical field of mine safety construction, and in particular relates to a roadway floor reinforcement system and a construction method thereof. Background technique [0002] With the extension of mine mining to the deep, the ground stress continues to increase, and the property of the surrounding rock tends to become soft rock. Only by improving the strength of support materials for passive support can no longer meet the needs of roadway support with high ground stress. The bearing capacity of the rock itself is actively involved in the support of the roadway. Therefore, grouting reinforcement of the damaged surrounding rock of the roadway has become the main means to increase the integrity of the roadway. The floor of the roadway without support belongs to one-way force, and increasing the strength of the rock mass of the floor is an effective way to ensure the compression resistance of the floor. At present, the method...

Claims

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Application Information

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IPC IPC(8): E21D11/10
CPCE21D11/10
Inventor 李万峰何礼品孟献录王传兵乔保峰侯俊领
Owner HUAINAN MINING IND GRP