山东焦家金矿床工程岩体稳定性分类研究

在矿山开采中常因不良岩体失稳造成很大的损失，因此，在施工前迫切需要对岩体稳定性进行合理的评价研究。本次研究结合焦家金矿的工程地质条件，根据矿区节理裂隙调查统计的结果，在矿区工程地质、节理裂隙素描统计岩石力学性质实验的基础上，采用现场调查统计分析、室内岩石力学试验、不同分类方法组成的岩石综合分级评价法及非线性有限元数值分析相结合的方法，对节理裂隙与地下巷道围岩稳定性的关系进行深入的探讨与研究，针对各区域不同安全等级顶板岩层情况，确定相应的开采技术方案，并对节理裂隙与地下巷道围岩稳定性的关系进行深入探讨。

Stability Classification of Engineering Rock Body in Jiaojia Gold Mine,Shandong Province

A great loss usually occurred in the process of mining due to bad rock instability.Therefore an urgent evaluation research on rock mass stability is necessary for pre-construction.According to mining area joints fractured surveies,statistical methods and results,basised on the experiments of engineering geological joints fractured sketch statistics rock mechanical nature,the studies combined with Jiaojia gold of the engineering geological conditions.We use methods of investigate and statistical analysis on the spot,indoor rock mechanic test,and a method of rock classification combined by different classification methods,and nonlinear finite element numerical analysis,to discuss further on the relationships of joint fissure and the stability of surrounding rock of underground tunnels.According to different security levels of mine,relevant mining technology solutions are determined.Deep discussion and research about the relationships of joint fissure and the underground rock mass stability are carried out.