Anti-shear, energy-absorbing, scour-increasing, resistance-increasing anchor cables and coupling anti-scourage method for supporting and unloading couplings in thick top-coal roadway
An anchor cable and anti-scouring technology, which is applied in the direction of earthwork drilling, bolt installation, mining equipment, etc., can solve the problems that cannot meet the anti-scouring requirements, do not consider shear deformation and shear energy absorption, and do not realize active anti-scouring Unified design of pressure relief measures and other issues to achieve the effects of reducing rock burst disturbance, enhancing stability, and avoiding shock overload
Active Publication Date: 2021-08-10
NORTHEASTERN UNIV LIAONING +2
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Problems solved by technology
[0005] The above invention patents have achieved creative design in terms of active pressure relief and anti-scour and anti-scourt anchoring support, but there are the following deficiencies: ① The unified design of the pressure relief measures for active anti-scouring and the anchoring measures for active protection have not been realized, so that anchoring cannot be realized Combined and coupled anti-shock function of support and pressure relief
② The energy-absorbing anchor material only considers the large deformation requirements of the anchor rod and anchor cable from the perspective of ideal stretching, and does not consider the shear deformation resistance and shear energy absorption after impact activation; Comprehensive consideration of damage characteristics, roadway roof and floor and other special structures, only the support body itself is considered, which cannot meet the anti-erosion requirements of thick roof coal roadway structures
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[0055] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0056] Such as figure 1 Shown is a schematic structural view of the anti-shear, energy-absorbing, anti-scouring and resistance-increasing anchor cable of the present invention. The anti-shear, energy-absorbing, impact-resistance and resistance-increasing anchor cable of the present invention comprises a steel strand anchor cable 4, a first adhesive storage box 13, an energy-absorbing, anti-impact and resistance-increasing device, an anchor cable lock 7, a pressure-bearing tray 1, an ear Type shear energy-absorbing cylinder.
[0057] Such as figure 2 As shown, the energy-absorbing anti-shock and resistance increasing device includes a first outer sleeve 6, a bearing limit base 11, a first inner sleeve 9, a thermal insulation filling layer 10, and an expansion friction head 8; the first The adhesive storage box 13, the first outer sleeve 6, t...
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The invention relates to the technical field of rock burst prevention and control, and provides a shear-resistant, energy-absorbing, scour-resistance-increasing anchor cable and a thick-top-coal roadway support and unloading coupling coupling anti-scour method. The anti-shear, energy-absorbing, anti-scorching and resistance-increasing anchor cable includes an energy-absorbing, anti-scorching and resistance-increasing device, an ear-type shear energy-absorbing tube; the ear-type shear energy-absorbing tube includes a second outer sleeve, a second inner sleeve, a metal interlayer , the metal interlayer includes arched bodies connected end to end, and reciprocatingly bent tooth-shaped members are provided at the joints of adjacent arched bodies. In this method, the construction parameters of anchor support and pressure relief are first determined; then the roadway roof anchor construction is carried out; then the large-diameter drilling is carried out for pressure relief construction; Risk area, seismic isolation and disturbance reduction zone; finally, the two sides of the roadway are anchored and pressure-relieved. The present invention can realize the overall energy absorption and anti-shear deformation of the anchor cable, unify the pressure relief measures of active anti-scouring and the anchoring measures of active protection, and realize the combination of anchor support-pressure relief and coupling anti-scouring of roadways with thick top coal.
Description
technical field [0001] The invention relates to the technical field of rock burst prevention and control in coal mine roadways, in particular to a shear-resistant, energy-absorbing, scour-increasing, resistance-increasing anchor cable and a method for coupling support and unloading couplings of thick-roof coal roadways. Background technique [0002] Rock burst is one of the most serious dynamic disasters in coal mines, which seriously threatens the safe production of underground mines. At present, with the increase of coal mining depth and mining intensity in my country, the occurrence frequency and disaster-causing degree of rock burst are increasing significantly. Statistics show that nearly 90% of rock bursts occur in roadways, especially for all-coal roadway excavation in thick coal seam mining. Bottom coal should not be left. If there is bottom coal, special control measures such as bottom plate pre-pressure relief must be taken. In this way, in thick and extra thick c...
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IPC IPC(8): E21D21/00
CPCE21D21/00E21D21/0033E21D21/008
Inventor 代连朋潘一山肖永惠王爱文施天威刘飞宇郭建霖蔡荣宦王岗
Owner NORTHEASTERN UNIV LIAONING
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