Research of roof control and design of surrounding rock support in No. 9 coal gateway of Wuda coal mine district
The authors simulated the dynamic process of rock deformation and failure in the roadways of No. 9 coal seam, Wuhushan coal mine by using the software Rock Failure Process Analysis System ( RF PA) . Based on the simulation results, this paper analyzes the failure process, characteristics and weighting of the overburden as the long-wall retreat mining proceeds. We analyzed and studied the roadways behaviors including deformation characteristics, failure mechanisms, stress distribution in the surrounding rocks and the effects of various support systems on roadway stability. While simulating the rock failure process with RFPA, the model stresses can be obtained through two approaches; (Dthe stress is reflected by the grayscale of pictures in the model failure process; ?the model stress can be obtained by muti-element information, which is one of the commands in RFPA system. Data files of stress can automat ically be created, and curves of stress and displacement of each element can be displayed in each step of computation.
roof control Rock Failure Process Analysis System (RFPA) roof to floor convergence com bined support mathematic simulation
Xiangyou Gui Yundong Ma Zhongming Yu
Mining College of Cuizhou University Bijie Region Coal Authority,Bijie 551700 College of Civil and Security Engineering,Dalian Jiaotong University,Dalian 116028 Guizhou University of Nationalities
国际会议
重庆
英文
207-214
2009-05-20（万方平台首次上网日期，不代表论文的发表时间）