Soft rock roadway anchored concrete filled steel tube anti-floor heave device and construction method thereof

A technology for anchoring steel pipes and concrete, which is applied in the fields of earthwork drilling, installation of anchor rods, and foundation structure engineering, etc. It can solve problems such as inability to really control bottom sag, mismatch between extension and bottom sag, and loss of control of bottom sag, etc. problems, to achieve the effect of controlling the bottom of the roadway, superior cost performance, and improving stress distribution
CN101975074BActive Publication Date: 2012-07-25滕州市产品质量监督检验所
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
滕州市产品质量监督检验所
Publication Date
2012-07-25

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Abstract

The invention discloses a soft rock roadway anchored concrete filled steel tube anti-floor heave device and a construction method thereof. The construction method comprises the following steps: punching pile holes at the two sides of the floor of a roadway, embedding a steel tube body in the pile holes, pouring cement mortar, fixing the steel tube body in the pile holes, pouring concrete in the steel tube body to form a steel pipe pile, enabling an anchor rod or an anchor cable to penetrate the through holes of the steel tube pile and be anchored in rock formation at the two base angles of the roadway, sheathing cushion blocks, and fastening by nuts to form an anchoring structure. The invention can effectively control the roadway floor heave, improve stress distribution, and have the advantages of simple and convenient construction process, low cost, short time limit, superior cost performance, and stable physical mechanical properties.
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Description

technical field

[0001] The invention relates to a support device for a mine roadway, a traffic tunnel and a water conservancy culvert, in particular to a support device for a soft rock roadway. Background technique

[0002] my country's coal resources buried below 1000m are about 24,500 trillion tons, accounting for 53.2% of the total coal resources. At present, the mining depth of coal mines is increasing at a rate of 8-12m per year, and the mines in the east are developing at a rate of 100-250m every 10 years. increase, we have to face a difficult problem—high-stress soft rock. The problem of soft rock has been raised as a worldwide problem since the 1960s, especially the problem of high-stress soft rock in coal mines has always been one of the major problems that plague the production and construction of coal mines.

[0003] At present, in underground engineering, roadways are often constructed in soft rocks, and roadway undercut is a common form of deformation and fail...

Claims

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