论文部分内容阅读
曹家洼金矿小尹格庄矿段受招平断裂(主裂面)及其三组次级断裂影响,采场岩体中发育出主要与主裂面大体平行的优势结构面。该矿段三中307、308采场于2010年发生围岩垮塌,造成部分矿量损失,因而采用CSRI分类法并结合RMR分类法的方式开展岩体稳定性调查与预测。根据实测和计算分析,认识到岩体结构面状态及其性质是影响采场围岩稳定性的最重要和最根本的因素,进而得出了小尹格庄矿段A、B、C、D各分区岩体稳定性预测结果,与307、308采场岩体垮塌滑移状态基本一致。预测结果已作为调整采场结构参数和支护方式的依据。
The Caojiawa gold deposit Xiaoyugzhuang ore section is affected by the Zhao-Ping fault (main surface) and its three sub-faults, and the predominant structural plane that is mainly parallel to the main fissure is developed in the stope. The 307,308 stopes at the third section of the ore section collapsed in 2010 and caused some losses of ore mass. Therefore, the CSRI classification method and the RMR classification method were used to carry out the rock mass stability investigation and prediction. Based on the measured and calculated results, it is recognized that the state and properties of structural plane of rock mass are the most important and fundamental factors that affect the stability of the surrounding rock of the stope. And then we get the results of A, B, C, D The prediction results of rock mass stability in each sub-area are consistent with those of the rock mass collapse in 307 and 308 mining areas. The prediction results have been used as the basis for adjusting stope structure parameters and supporting methods.