摘要
结合排山楼金矿空区的复杂现状,应用FLAC3D建立数值分析模型,运用FISH语言编程使模型地表与矿山实际相拟合,模型充分反映了地表、井下空区的现实状况。并根据空区围岩的位移、应力模拟结果,分析了围岩的稳定性。虽然模型显示应力向着有利于岩石材料高抗压的似拱形发展,但从顶板安全系数较低、间柱应力集中、岩体时间效应、井下开采扰动等方面综合分析,得到空区围岩的稳定只是暂时稳定的结论。所以,空区暴露面积不宜扩大,应立即采用RG井下录像系统对顶板岩体跟踪监测,为生产提供客观依据,实施RG监测强采。
Combining with the complex situation of Paishanlou gold mine,3D numerical model by FLAC3D was built to make the model surface fitting with the reality of mine by FISH language programming.This model fully reflects the real situation of surface and underground mined-out area.Then,the stability of surrounding rock mass are analyzed according to the displacement and stress simulation results of wall-rock in mined-out area.Although the model shows that the stress developed with an arch direction,which is toward the high compressive strength of rock material,the stability is temporary because of the low safety factor,stress concentration in pillar,time effect of rock mass,and mining disturbance.So the exposed area of goaf should not be expanded,and roof should be monitored immediately in mining process by RG underground video system,which can provide an objective basis for production.
出处
《金属矿山》
CAS
北大核心
2010年第7期136-139,共4页
Metal Mine
