三山岛金矿西岭矿区深部岩体岩爆倾向性熵权法综合预测

Entropy method comprehensive prediction of rock burst tendency of deep rock mass in Xiling mining area of Sanshandao gold mine

为准确预测三山岛金矿西岭矿区深部岩体岩爆倾向性,本文综合考虑岩爆发生的内因和外因,选取岩石本身力学性质条件、围岩应力状态、围岩地质条件3个方面8项评价指标,通过地质钻孔岩芯岩爆倾向性试验,获得岩爆倾向性单指标评价结果,同时引入熵权-TOPSIS法建立岩爆多指标综合评价体系,对钻孔区域岩体进行了岩爆倾向性综合预测。研究表明:3个钻孔各测点深度岩体均具有一定岩爆倾向性,尤其是ZK88-18钻孔1200 m、1500 m和2300 m深度岩爆倾向性为强岩爆。对于深部完整性较好的岩层,在工程施工时需加强岩爆灾害的控制和管理工作。

In order to predict the rock burst tendency of deep rock mass in Xiling mining area of Sanshandao gold mine,the internal and external causes of rock burst are considered comprehensively in this paper,eight evaluation indexes are selected from three aspects:mechanical properties of rock,stress state of surrounding rock and geological conditions of surrounding rock,through the geological drill core rock burst tendency test,the single index evaluation results of rock burst tendency is obtained.At the same time,the entropy weight-TOPSIS method is introduced to establish the multi-index comprehensive evaluation system of rock burst,and the rock burst tendency of drill area rock mass is predicted comprehensively.The research shows that the rock mass at each measure point of 3 drills has a certain rock burst tendency,in especial,the rock burst tendency of 1200 m,1500 m and 2300 m in ZK88-18 drill is strong rock burst.The control and management of rock burst disaster should be strengthened in engineering construction for the deep rock with good integrity.