A physical model study of surrounding rock failure near a fault under the influence of footwall coal mining
作者机构：School of City and Architecture EngineeringZaozhuang UniversityZaozhuang 277160ShandongChina School of Civil EngineeringLiaoning Technical UniversityFuxin 123000LiaoningChina
出 版 物：《International Journal of Coal Science & Technology》 (国际煤炭科学技术学报（英文）)
年 卷 期：2021年第8卷第4期
页 面：626-640页
核心收录：
学科分类：081901[工学-采矿工程] 0819[工学-矿业工程] 08[工学]
基 金：The authors acknowledge the support of the China National Key R&D Program Project(2017YFC1503102) the National Natural Science Foundation of China(No.51704143) the Natural Science Foundation of Liaoning Province of China(2020-MS-302)
主 题：Fault Mining roadway Surrounding rock Coal pillar Physical model
摘 要：A study of the deformation of the surrounding rock and coal pillars near a fault under the influence of mining is conducted on a physical model for the design of coal pillars to support and maintain the roofs of adjacent fault *** research is based on the 15101 mining face in the Baiyangling Coal Mine,Shanxi,China,and uses simulation tests similar to digital speckle test technology to analyse the displacement,strain and vertical stress fields of surrounding rocks near faults to determine the influence of the coal pillar *** results are as *** surrounding rock of the roadway roof fails to form a balance hinge for the massive rock *** vertical displacement,vertical strain and other deformation of the surrounding rock near the fault increase steeply as the coal pillar width *** steep increase in deformation corresponds to a coal pillar width of 10 *** the coal pillar width is 7.5 m,the pressure on the surrounding rock near the footwall of the fault suddenly increases,while the pressure on the hanging wall near the fault increases by only 0.35 *** stress of the rock mass of the hanging wall is not completely shielded by the fault,and part of the load disturbance is still transmitted to the hanging wall via *** width of the fault coal pillars at the 15101 working face is determined to be 7.5 m,and the monitoring data verify the rationality of the fault coal pillars.
维普期刊数据库