DOI: 10.11799/ce201712018
Research and application of high prestress and long anchorage technology in Hulusu Coal Mine
LU Xi-hui
AI Chuan
ZHANG Nong
HAN Chang-liang
SHI Chao-hong
Abstract：Based on the analysis of prestressing principle and the calculation of composite beam supporting theory,aiming at the prominent problems such as the excavation imbalance and the low speed of roadway driving,high prestress long anchorage technology was proposed according to the results of FLAC3D numerical simulation and on-site drilling and peering of ZKXG30 mining drill peephole.An industrial test was carried out in Hulusu Coal.Mine 21204 working face air return way,which achieved good results.The technology improved the tunneling efficiency and single entry level,and a record has been created using the technology with a single-month footage of 840m in half-coal rock heading in Meng-Shah region.
Keywords：composite beam theoryhigh preloadlong anchorageimbalance of mining and heading
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 69-72 )