High-strength light erosion prevention support
A high-strength, high-strength carbon fiber technology, used in pillars/supports, mining equipment, earth-moving drilling and other directions, can solve the problems of support movement, installation and handling difficulties, affecting personnel safety in mine production, and increasing the weight of support equipment. Achieve the effect of saving money, improving support strength and reducing labor intensity
Inactive Publication Date: 2013-05-08
LIAONING TECHNICAL UNIVERSITY
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Problems solved by technology
However, the strong impact dynamic load generated by rock burst in the deep mining process often exceeds the strength limit of these conventional supports, and causes support and roadway damage, seriously affecting the safety of personnel and mine production.
Recently, the use of strong support in deep mines has effectively suppressed rock burst, but the weight of support equipment has increased by dozens of times, and the support cost has also increased by dozens of times. The back and forth of the support is frequently moved, the labor intensity is high, and the cumbersome strong support method brings certain difficulties to the movement, installation and transportation of the support.
Method used
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[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0018] like figure 1 , 2 , 3, a high-strength lightweight anti-shock bracket, including an arc-shaped bracket 1 and a sawtooth friction energy-absorbing connection member 2, the main body of the arc-shaped bracket 1 is set to a box-shaped beam 3 structure, and the box-shaped The beam 3 is set as a hollow trapezoidal tube structure, and the first high-strength carbon fiber plate 4 and the second high-strength carbon fiber plate 6 are respectively bonded outside the upper and lower tube walls of the box beam 3, and the box beam 3 interface A trapezoidal connection mandrel 15 is installed in the pipe wall at the end; the first high-strength carbon fiber plate 4 at the interface end of the box beam 3 is bonded to one side of the first sawtooth friction plate 5, and the interface end of the box beam 3 The second high-strength carbon fibe...
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A high-strength light erosion prevention support belongs to the technical field of coal mine tunnel protection and particularly relates to a high-strength light erosion prevention support which is applied to the deep rock burst of a coal mine mining area. The invention provides the high-strength light erosion prevention support by converting the traditional supporting and protecting structure into a controllable supporting and protecting structure which is capable of erosion prevention and shock absorption in consideration of the perspective of energy dissipation and energy absorption in dynamics. The support can improve the supporting and protecting strength and absorb the blastic deformation energy which is released instantly when the earth pressure is impacted. The support comprises an arc-shaped support and a connecting component of energy absorption through friction of jags. The main body of the arc-shaped support is in a box beam structure. The box beam is in a hollow trapezoid pipe structure and a trapezoid connecting mandril is installed in the pipe wall of the connecting end of the box beam. The main body of the connecting component of energy absorption through friction of the jags comprises a U-shaped plate and a fastening jag friction plate, the inner bottom of the U-shaped plate is in a jag shape, and the U-shaped plate and the fastening jag friction plate are connected through fastening bolts and nuts.
Description
technical field [0001] The invention belongs to the technical field of coal mine roadway support, and in particular relates to a high-strength light-weight anti-scour support used in coal mine mining areas of deep rock burst. Background technique [0002] With the continuous increase of my country's energy demand and the continuous increase of mining intensity, the excavation depth is getting deeper and deeper, and mines with a depth of several thousand meters are not uncommon. In the next few years, most mines will enter the deep mining stage. Under deep conditions, the unique mechanical properties of deep surrounding rocks and severe challenges to classical support appear. Nowadays, the frequency and intensity of rock bursts are increasing, causing a large number of roadway support damage, collapse and casualties, which seriously affects the safety of coal mine production. Therefore, the prevention of rockburst by backing roadway support in deep working faces has become ...
Claims
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IPC IPC(8): E21D15/00
Inventor 李祁潘一山聂颖李忠华贾宝新徐连满尹万蕾李国臻
Owner LIAONING TECHNICAL UNIVERSITY