Photoelastic experiment model and their experiments of bolt pre-tightening force effect

摘要：

　　To study bolt pretension on the stability of roadway surrounding rock and their influence law by experimental method, we designed and developed photoelastic experiment model of bolt pre-tightening force simulation test, the experiment studied the effect regular that bolt pre-tightening force on the stability of surrounding rock.The experimental results showed that: applying a prestressing force for bolt can increase compressive stress area of the rock, improving the stress state of the surrounding rock effectively.The results obtained through the photoelastic experiment model to simulate the bolt support in surrounding rock stress field caused by prestressing force are in good agreement with results scholars adopted numerical simulation and draw the conclusion that the bolt interval plays an important role in supporting effect.

关键词： bolt support pre-tightening force photoelastic experiment stress field

作者: XU Ji-cheng YU Jun LIU Xu LI Ying-ming

作者单位: Key Laboratory of Safety and High-efficiency Coal Mining ,Ministry of Education ,Anhui University of Science and Technology, Huainan 232001 ,China;School of Mining and Safety, Anhui University of Science and Technology, Huainan 232001, China

会议类型: 国际会议

会议名称: International Mining Conference 2014(2014国际采矿论坛)

会议地点: 安徽淮南

会议语种:英文

页码: 506-510

在线出版日期: 2014-09-19（万方平台首次上网日期，不代表论文的发表时间）