深部动压巷道高阻让压支护技术研究

Support Technology of High Resistant and Yielding Property for Deep Roadway Under Dynamic Pressure

为解决深部动压巷道支护的技术难题,针对曹村煤矿十采区下部人车下山巷的具体工程地质条件与生产技术条件,在现场地应力实测的基础上,采用巷道支护专家系统软件对动压巷道支护形式与参数进行优化设计,确立了以高强让压锚杆与带肋锚索为核心的新型"高阻—让压"支护体系,并进行了井下工业性试验和矿压监测。研究结果表明:基于地应力实测的高强让压锚杆和带肋锚索联合支护提高了支护结构的整体承载力,有效控制了围岩的变形,达到了支护设计的预期效果,保证了动压巷道的稳定和正常使用。

To solve the technological problems of deep roadway support,in view of the specific geological and technical conditions in dip roadway of No.10 District in Caocun Coal Mine,the in-situ stress was measured,and the roadway support form and parameters under dynamic pressure were designed and optimized with the use of roadway support expert system software.Then,the new support system of high resistant and yielding property was established,which uses the high-strength yielding bolt and ribbed anchor as core,and the underground industrial tests and ground pressure monitoring were carried out.The results show that the support system with high-strength yielding bolt and ribbed anchor,which is based on the in-situ stress measurement,can increase the overall capacity of support structure,and control the deformation of surrounding rock effectively.Thus,the intended effect of support design is reached,which ensures the stability and normal use of the deep roadway under dynamic pressure.