Study on the Influence of Radial Pressurization on Anchoring Performance of Bolts  

作　　者：Shuo Wang Shuo Wang(School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo, China)

机构地区：[1]School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo, China

出　　处：《World Journal of Engineering and Technology》2023年第4期732-744,共13页世界工程和技术（英文）

摘　　要：Supporting soft rock roadways in coal mines has long posed a formidable challenge. Addressing issues such as the formation of soft rock strata, poor fracture development, limited tolerance, and the frequent and severe damage sustained by conventional bolts due to their low elongation and bearing capacity, this study employs bottom expansion and filling technology. It combines theoretical analysis with booster bolt pull-out tests to scrutinize the radial stress distribution of bolts under extrusion forces. Moreover, it conducts a comparative analysis of bolt bearing characteristics under varying radial pressurization conditions, delving into the impact of radial directional increases in compressive stress on bolt anchoring performance.Supporting soft rock roadways in coal mines has long posed a formidable challenge. Addressing issues such as the formation of soft rock strata, poor fracture development, limited tolerance, and the frequent and severe damage sustained by conventional bolts due to their low elongation and bearing capacity, this study employs bottom expansion and filling technology. It combines theoretical analysis with booster bolt pull-out tests to scrutinize the radial stress distribution of bolts under extrusion forces. Moreover, it conducts a comparative analysis of bolt bearing characteristics under varying radial pressurization conditions, delving into the impact of radial directional increases in compressive stress on bolt anchoring performance.

关 键 词：ANCHORS Pressure Dispersion Axial Forces Anchoring Effect 

分 类 号：TD3[矿业工程—矿井建设]