摘要
在深部开采卸荷作用下,采场围岩产生大量裂隙和损伤,直接顶岩层处在峰后阶段,液压支架的重复支撑使其完整性和稳定性都会产生明显降低。文中以埋深800m的邢东矿1126工作面为研究背景,对高水材料长壁充填开采工作面的直接顶岩层垮落步距进行了理论计算,修正了传统矿压理论,计算结果与现场监测实际情况吻合。
Due to the unloading in deep mining, fracture and crush is widely existed in wall rock of stope. Since direct roof stratum was already in the post peak status, the repeat prop up would decrease its integrity and stability significantly. Taking the Xingdong 1126 working face in 800 meter deep as research background, this paper amended the mine pressure theory and calculated collapse distance of direct roof stratum in longwall mining filling with high water content. At last, the monitor data was agreed with the calculated results well.
出处
《铜业工程》
CAS
2015年第1期36-38,50,共4页
Copper Engineering
基金
国家重点基础研究发展计划(973计划)(2010CB226802)
四川大学水力学国重室开放基金(SKHL1312)
西华大学重点科研基金项目(z1320404)
关键词
深部开采
峰后
液压支架
重复扰动
矿压理论
deep mining
post peak
hydraulic support
repeat disturbance
mine pressure theory
