Yuan Dian Coal Mine Tunnel Surrounding Rock Stability Classification And Its Supporting Decision-making

Taking mining of Huaibei Yuandian as engineering background,in the coalfied,the rock is crushed,the integrity is poor, it belongs to the complex rock,pressure is high, short self-stabilization time, large rock deformation speed and long duration, the coliery is one of the most difficult support in the coalfield of Huaihe,so it is necessary to study on rock classification and support design.Many factors affect stability of surrounding rock of roadway,which can be divided into engineering factors and geological factors;Analysising of roadway mining pressure of Yuandian mining, With fuzzy cluster mathematical model to simulate the extraction roadway rock stability classification;As a comprehensive strength and structure of surrounding rock based on the ratio of the dynamic stress of preparatory workings and developing roadway surrounding rock stability classification;Building bolting parameters design model of recovery roadway based on BP neural network theory,this model includes7input and14output;According to the principles and practice of roadway supporting decision scheme;the matlab7.0as the system development environment,completing each function module of the system,which mainly includes the classification module stability roadway rock,module of support decision,module of profile drawing and so on. Based on specific geological and engineering factors of roadway, the surrounding rock stability classification and support parameters design, and using the field measurement on deformation of roadway surrounding rock, the anchor net supporting monitoring and feedback.