Mechanical Analysis of Fracture Process of Key Strata in Surface-Underground Combined Mining

摘要：

In the process of the surface-underground combined mining, the fracture development of strata has important influence on layout of roadways and stability of the mining slope. Based on a pratical engineering in Pingshuo Mining Area, key strata theory is applied, and the key stratum is regarded as a thick rectangular plate on elastic foundation, then a mechanical model is built. Formulas for calculating the stress and deformation are derived by using the reciprocal theorem method on the basis of Reissners theory. Combined with engineering examples, stress and deformation characteristics of the key strata when the working face advances are revealed.

关键词： Surface-Underground Combined Mining Mined-Out Regions Key Strata Thick Plate Theory Mechanical Analysis

作者: WANG Shuren LIU Peipei JIA Huihui

作者单位: School of Civil Engineering and Mechanics, Yanshan University, Qinhuangdao, Hebei 066004, China

会议类型: 国际会议

会议名称: 2010 International Conference on Mine Hazards Prevention and Control(第二届矿山灾害预防与控制国际学术会议 ICMHPC)

会议地点: 青岛

会议语种:英文

页码: 764-771

在线出版日期: 2010-10-15（万方平台首次上网日期，不代表论文的发表时间）