Ground subsidence mechanism of a filling mine with a steeply inclined ore body

作     者：LI Guang LIU Shuai-qi MA Feng-shan GUO Jie HUI Xin LI Guang;LIU Shuai-qi;MA Feng-shan;GUO Jie;HUI Xin

作者机构：Key Laboratory of Shale Gas and GeoengineeringInstitute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Innovation Academy for Earth ScienceChinese Academy of SciencesBeijing 100029China Economics&Technology Research InstituteChina National Petroleum CorporationBeijing 100011China China Academy of Industrial InternetBeijing 100102China 

出 版 物：《山地科学学报(英文)》 (Journal of Mountain Science)

年 卷 期：2023年第20卷第8期

页      面：2358-2369页

核心收录：

学科分类：081901[工学-采矿工程] 081803[工学-地质工程] 0819[工学-矿业工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：support from the National Natural Science Foundation of China(Grant Nos.42072305 and 41831293) 

主　　题：Ground subsidence Backfill mining Steeply inclined ore body GPS monitoring Rock mass movement model 

摘      要：Long-term field monitoring finds that serious surface subsidence can still occur even if the high strength cemented fill method is *** the results of numerical simulations with global position system(GPS)monitoring,we took a typical filling mining mine with a steeply inclined ore body as an example,and explored its ground subsidence *** results show that the ground subsidence caused by the mining of steep ore body is characterized by two settlement centers and a significantly uneven spatial distribution,which is visibly different from ground subsidence characteristic of the coal *** subsidence on the hanging wall is much larger than that on the footwall,and the settlement center tends to move to the hanging wall with the increase of mining *** backfill improves the strength and surrounding rock bearing capacity,which leads to a lag of about 3 years of the ***,under the actions of continuous and repeated mining disturbances,the supporting effect of the backfill can only reduce the amplitude of the deformation,but it cannot prevent the occurrence of settlement.