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Supporting method of carboniferous system geologic structure in-zone breaking country rock roadway

A technology of geological structure and broken surrounding rock, applied in the direction of supporting the roof beam of the mine roof, earthwork drilling, mining equipment, etc., can solve the problems of imperfect roadway support for broken surrounding rock, etc., to strengthen the design concept and improve safety. The effect of improving reliability and technical level

Active Publication Date: 2013-05-29
DATONG COAL MINE GRP
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Problems solved by technology

[0004] In order to solve the problem of imperfect support of the broken surrounding rock roadway in the Carboniferous geological structure belt, the present invention provides a support method for the broken surrounding rock roadway in the Carboniferous geological structure belt

Method used

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Embodiment Construction

[0016] The support method for roadways with broken surrounding rocks in the Carboniferous geological structure belt is composed of two steps: temporary support for the roadway when the tunneling unit cuts forward to a certain distance, and then permanent support. It is characterized in that: temporary support The steps include fixing a "U"-shaped lifting ring on the two rows of supported top anchors closest to the working face, using channel steel as the front probe beam to penetrate the "U"-shaped lifting rings of the front and rear two top anchors , fix the horizontal wooden beams between the front beams, push out the front beam group with wooden beams for temporary support; the steps of permanent support include laying steel wire mesh, upper steel beams, installing roof anchors, installing helpers Bolt anchor, install roof anchor cable; anchor bolt anchoring form adopts full-length anchoring or extended anchoring form; the length of the anchor bolt must be greater than the m...

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Abstract

The invention particularly discloses a supporting method of a carboniferous system geologic structure in-zone breaking country rock roadway. The problems of that support of the carboniferous system geologic structure in-zone breaking country rock roadway is incomplete is solved. According to the supporting method of the carboniferous system geologic structure in-zone breaking country rock roadway, temporary support to a roadway is carried out when a heading machine group is stepped forward and cut to a certain distance, and then permanent support composed of two steps is carried out. The permanent support comprises that a steel wire mesh is laid, girders are loaded up, roof bolts are installed, gang-part bolts are installed, and roof anchor ropes are installed. The supporting method of the carboniferous system geologic structure in-zone breaking country rock roadway is capable of lightening digging subsidiary transport work amount and improving a safety factor inside the roadway and has high economic effectiveness.

Description

technical field [0001] The invention relates to a roadway support method, in particular to a support method for a broken surrounding rock roadway in a Carboniferous geological structure belt. Background technique [0002] The Carboniferous is the earliest important coal-forming period in the world. The strata deposited during the Carboniferous period are called the Carboniferous. In the early Carboniferous, due to the seawater advancing and retreating in southern China, alternating land and sea facies were formed, and clastic rocks, impure limestone and coal seams were deposited about 1,000 meters long; in the late Carboniferous, seawater was relatively stable, and neritic limestone was deposited. Mainly. Since the Ordovician, the seawater withdrew from the entire North China and the southeastern part of Northeast China, and suffered from weathering and erosion for a long time. It was not until the Late Carboniferous that the seawater infiltrated this area again, forming a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D21/00E21D20/00E21D17/02
Inventor 吴永平郄宝厚翟英达李凯刘文纪润清王爱国张春山佘春王军蔡海关占胜杨发长
Owner DATONG COAL MINE GRP
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