为实现冲击地压巷道支护参数的定量化确定,提出了基于能量计算的冲击地压巷道支护参数确定方法,主要包括巷道冲击危险性评估、震源参数、巷道围岩最大冲击动能和支护结构吸能量确定。利用理论计算、数值模拟及实验室测试等方法确定出了耿村矿13230工作面上巷的单位面积释放的冲击动能和位移势能之和为78.53kJ/m2,基于能量计算方法确定了13230工作面上巷的支护参数,三级支护系统吸能量为82.66kJ/m2,并在井下进行了工业性试验,试验结果表明:锚杆(索)初始受力较低,随着围岩变形的增加,锚杆(索)受力逐步增加,然后保持稳定。在大能量冲击事件作用下,锚杆支护结构受力出现了一定的波动,但巷道变形量不大,三级支护系统有效控制了巷道在高能量事件下的变形破坏,有效耗散了冲击动能。

In order to achieve the quantitative design of support parameters of rock burst roadway, a design method of support parameters was proposed for rock burst roadway based on energy calculation, which mainly includes the assessment of roadway rockburst risk, determination of source parameters, determination of maximum impact kinetic energy of roadway surrounding rock and determination of energy absorption of support structure. First of all, theoretical calculation, numerical simulation and laboratory tests were used to determine that the impact kinetic energy and displacement potential energy released per unit area of the upper roadway of the 13230 working face was 78. 53 kJ/ m2. Based on the energy calculation method, the support parameters of the upper roadway of the 13230 working face were determined. The energy absorption of the tertiary support system was 82. 66 kJ/ m2. Based on the energy calculation method, the support parameters of the upper roadway of the 13230 working face were determined, the industrial test of the three-level support system was carried out in the mine, and the results show that, the initial stress of the bolt (cable) is low; With the increase of the deformation of the surrounding rock, the stress of the bolt (cable) gradually increases, and then remains stable; Under the action of the high energy impact event, the stress of the bolt support structure fluctuates to a certain extent, but the deformation of the roadway is not large; The three-level support system effectively controlled the deformation and damage of the roadway under the high energy burst event, and effectively dissipated the burst kinetic energy.