Citation Search Quick Search
  2019, Vol. 38 Issue (5): 938-947    DOI: 10.13722/j.cnki.jrme.2018.1180
Current Issue | Archive | Adv Search |
A method for improving the anchorage effect of the resin-anchored cable bolts in roadway roof with water-bearing soft rock
JIA Housheng1,2,WANG Luyao1,LIU Shaowei1,2,HE Deyin1,JIANG Wenyuan3,PAN Kun1,WANG Yinwei1
(1. School of Energy Science and Engineering,Henan Polytechnic University,Jiaozuo,Henan 454003,China;2. Collaborative Innovation Center of Coal Work Safety,Henan Province,Jiaozuo,Henan 454003,China;3. Jining Shanyunyunei Electrical Technology Co.,Jining,Shandong 272400,China)
Download: PDF (1257 KB)   HTML (1 KB) 
Export: BibTeX | EndNote (RIS)      
Abstract  Aiming at the problem that it is difficult for high strength cable bolts to come into action in roadway roof with water-bearing soft rock and taking Lijiahao coal mine as an example,theoretical analysis,numerical simulation,laboratory experiment and field test were adopted to propose a method for improving the anchorage effect of cable bolts. A new device which is easy to install and simple in structure without affecting the normal installation of cable bolts was developed and the anchorage improving mechanism of the device was revealed. The results indicate that, as the distance between the water-bearing rock stratum and the roof changes,it is difficult to determine the reasonable anchorage position. When cable bolts are anchored in irregular distribution soft rock stratum,the anchoring force significantly declines and may not meet the anchoring requirements. The device including mixing structure and sealing-lifting structure can increase the uniformity and density of the resin grout to improve the anchoring force. The field test demonstrates that the anchoring force can be increased by more than 30% compared with the normal anchored cable bolts. The device can promote the roof to form a stable anchorage structure and hence,reduce the roof deformations obviously and enhance the roof stability.
Key wordsrock mechanics      water-bearing soft rock      cable bolts      anchoring force      resin grout      anchorage quality improvement     
Service
E-mail this article
Add to my bookshelf
Add to citation manager
E-mail Alert
RSS
Articles by authors
JIA Housheng1
2
WANG Luyao1
LIU Shaowei1
2
HE Deyin1
JIANG Wenyuan3
PAN Kun1
WANG Yinwei1
Cite this article:   
JIA Housheng1,2,WANG Luyao1, et al. A method for improving the anchorage effect of the resin-anchored cable bolts in roadway roof with water-bearing soft rock[J]. , 2019, 38(5): 938-947.
URL:  
http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2018.1180      OR      http://www.rockmech.org/EN/Y2019/V38/I5/938
Copyright © 2005-2015 Edited and Published by Editorial Office for Chinese Journal of Rock Mechanics and Engineering
Sponsored by : Chinese Society for Rock Mechanics and Engineering 
Published by : Science Press 
Address: Wuhan 430071, China  Tel: (027)87199250  Fax: (027)87199250  Email: rock@whrsm.ac.cn
DESIGNED BY: Beijing Magtech Science & Technolgy Development Co.,Ltd.
鄂公网安备 42010602003581号