Influence of backfilling rate on the stability of the"backfilling bodyimmediate roof"cooperative bearing structure

作     者：Xianjie Du Guorui Feng Min Zhang Zehua Wang Wenhao Liu Xianjie Du;Guorui Feng;Min Zhang;Zehua Wang;Wenhao Liu

作者机构：College of Mining EngineeringTaiyuan University of TechnologyTaiyuan 030024China Shanxi-Zheda Institute of Advanced Materials and Chemical EngineeringTaiyuan 030024China Key Laboratory of Shanxi Province for Mine Rock Strata Control and Disaster PreventionTaiyuan 030024China State Key Laboratory for GeoMechanics and Deep Underground EngineeringChina University of Mining and TechnologyXuzhou 221116China Zhengzhou Coal Industry(Group)CoLtdZhengzhou 450007China College of Civil EngineeringTaiyuan University of TechnologyTaiyuan 030024China 

出 版 物：《International Journal of Mining Science and Technology》 (矿业科学技术学报（英文版）)

年 卷 期：2022年第32卷第6期

页      面：1197-1206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：supported by the Youth Funds of National Natural Science Foundation of China(No.52004173) the Distinguished Youth Funds of National Natural Science Foundation of China(No.51925402) the Science and Technology Innovation Project of Colleges and Universities in Shanxi Province(No.2020L0066) the China Postdoctoral Science Foundation(No.2022M712922) the Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering(Nos.2021SX-TD001 and 2022SXTD008) 

主　　题：Constructional backfilling coal mining Immediate roof Cooperative bearing structure Medium thick plate on elastic foundation Backfilling rate Overlying strata 

摘      要：To reduce the cost of backfilling coal mining and utilize the underground space of coal mines,a new backfilling mining method with low backfilling rate called constructional backfilling coal mining(CBCM)is *** backfilling body-immediate roof cooperative bearing structure of CBCM is analyzed by establishing the model of the medium thick plate on an elastic *** influence of the backfilling rate on the stability of overlying strata is analyzed by the numerical simulation *** control effect of CBCM is verified by a physic similar simulation *** economic benefit of CBCM is *** conclusions are:the deformation characteristics of the immediate roof and critical backfilling spacing in CBCM can be analyzed based on the Hu Haichang’s *** the bearing capacity of the immediate roof is beneficial to the stability of the overlying *** CBCM has a good control effect on the overburden in Xinyang Mine when the backfilling rate is lower than 25%.The backfilling cost of per ton coal is 37.39 yuan/t when the backfilling rate is 13.7%,with a decrease rate of 56.63%than the *** research results can provide theoretical support for the application of CBCM in coal mining.