Distribution Laws of Abutment Pressure around Coal Faces

摘要：

To reveal the laws of abutment pressure around coal faces under each coal seam situation and mining condition, bounded by the pressure angle of the strength properties of the overlying rock, the fully moving area was defined and the computational mechanics model was established. According to the four primary factors (mining depth, pressure angle, strength of coal and thickness of coal seam ) and width of coal pillar, 24 numerical-simulation projects are taken out. By fitting and analyses of the results of numerical simulation, 3 characteristic parameters that can describe the distribution of abutment pressure were gained computation then a calculation method was put forward to determine the abutment pressure around the goaf or in the coal block. The comparison between the calculated value and the measured value of abutment pressure for 43up07 working face in Dongtan Mine proves that the calculation method is accurate and reliable.

关键词： abutment pressure fully moving area numerical simulation characteristic parameter

作者: WANG Dong DUAN Kexin WANG Meng

作者单位: College of Resource and Environment Engineering, Liaoning Technical University, Fuxin 123000, Liaoning, China

会议类型: 国际会议

会议名称: The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)

会议地点: 杭州

会议语种:英文

页码: 1623-1626

在线出版日期: 2010-10-26（万方平台首次上网日期，不代表论文的发表时间）