【摘要】 结合湘西金矿深部开采综合技术研究课题 ,运用数值模拟方法 ,建立了采场模拟模型 ,并计算分析了深部采场的稳定性。模拟了采场回采过程中声发射、剪应力分布及破坏情况。结果表明 :当采场跨度达到 6m以后 ,顶板局部开始垮落 ;当跨度达到 10m以后 ,顶板中部发生冒顶事故。由此提出了相应的采场结构参数、顶板水压支柱支护、地压监测预报等综合地压控制措施。有效地维护了采场顶板的稳定 ,使回采作业安全、顺利地完成 ,获得了理想的效果更多还原

【Abstract】 Combining with the researches of synthetic technology of deep mining in Xiangxi Gold Mine,this paper,by using method of numerical simulation,established stope simulating model,calculated and analysed the stability of deep stope and simulated the distribution of shear stress and sound emission and shear stress in the process of stoping.The result are as follows;when the stope span came to 6 meters,part roof began to collapse;when the stope span came to 10 meters,the middle part of the roof started to fall.From this ,the synthetic measures were proposed such as adopting appropriate stope structural parameter,supporting roof by hydraulic pressure pillar,monitoring and forecasting ground pressure etc.All these measures kept the stope roof stable and mining operation safe.更多还原