DOI: 10.11799/ce202411006
Anchor net safety support and surrounding rock control technology for coal roadway under strong mining influence in Huainan mining area
REN Shuai
XIAO Diancai
LUO Yong
YU Guofeng
REN Bo
GAO Xiang
Abstract：With the advancement in deep part mining in Huainan mining area,the engineering technical problems,such as high wall rock stress,complex environment soft cracking,and poor stability,serious deformation,etc,has become increasingly obvious.Based on the deep geology at Pansan Mine in Huainan mining area,we employ theoretical analysis,numerical stimulation,industrial test,and in-site measurement to study coal roadway control under mining.Aiming at solving coal roadway wall rock control difficulty during strong mining in deep part of Huainan mining area,we establish an integration control technology of"stress optimization-wall rock modification-anchor reinforcement,which update"caving unloading-casting reinforcement-thick anchoring reinforced layer technology.Industrial test is taken in No.2121(3)transport roadway.The maximum deformation on both sides of transport roadway during recovery is 436.6 mm.The maximum relative,accumulative displacement of floor is 390.1 mm,which is less than 50%deformation of original supports.In 1.5～1.8 m roof rock layer of No.212(3)roadway,it exists isolated layer and fissure development.Roof rock stratum in deep part is integrate and bears well,which presents good roadway stability and turns out good control effect of this technology on wall rock stability in coal roadway during strong mining in the deep part.
Keywords：Huainan mining areastrong mining influencethick anchoring layeranchor gradientsurrounding rock control
Publication Date：2024-11-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 29-37 )