caa a22 4500 605453993 CHVBK 20210128100204.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s10064-014-0674-9 doi (NATIONALLICENCE)springer-10.1007/s10064-014-0674-9 Interactions of overburden failure zones due to multiple-seam mining using longwall caving [Elektronische Daten] [Wanghua Sui, Yuan Hang, Luxing Ma, Zhaoyang Wu, Yongjie Zhou, Guoqing Long, Lianbo Wei] This paper presents an investigation on the interactions of overburden failure zones induced by the mining of adjacent coal seams using the longwall caving method. Overburden failure is an important factor in safety assessments in the fields of mining engineering geology and safety geology, especially when mining under water bodies. In this study, the influence of the thickness and properties of the interburden between seams on the development and interactions of caving and fractured water flow zones are investigated by using in situ measurements, scale model testing and numerical simulations. The height of the fractured water flow zones in the scale model tests and numerical simulations are basically in good agreement with measurements after mining of the upper and lower seams of Seam No. 3 in the Cuizhuang Coalmine. Therefore, the scale tests and numerical simulations in the study are verified. The results show that interaction and superposition between two close distance seams cannot be ignored when the ratio (h/M) of the interburden thickness (h) to the cutting height of the lower seam (M) is less than a defined critical value. A dividing line, Line D, has been proposed to judge whether the interactions exist. When the (M, h/M) points are located above Line D, the caving zone induced by excavation of the lower seam will not propagate to the caving zone induced by the upper seam. Otherwise, for the (M, h/M) points below Line D, the interactions and superposition of the overburden failure must be considered when predicting the heights of the caving and fractured water flow zones. The Author(s), 2014 Interactions of overburden failure nationallicence Longwall caving nationallicence Multiple coal seam mining nationallicence Caving zone nationallicence Water flow fracture zone nationallicence Mining under water bodies nationallicence Sui Wanghua School of Resources and Geosciences, State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, 1 University Ave (Daxuelu), 221008, Xuzhou, Jiangsu, China aut Hang Yuan School of Resources and Geosciences, State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, 1 University Ave (Daxuelu), 221008, Xuzhou, Jiangsu, China aut Ma Luxing School of Resources and Geosciences, State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, 1 University Ave (Daxuelu), 221008, Xuzhou, Jiangsu, China aut Wu Zhaoyang School of Resources and Geosciences, State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, 1 University Ave (Daxuelu), 221008, Xuzhou, Jiangsu, China aut Zhou Yongjie School of Resources and Geosciences, State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, 1 University Ave (Daxuelu), 221008, Xuzhou, Jiangsu, China aut Long Guoqing Pan-China Group Inc., Chongqing Branch, 85 Jinyudadao, 401120, Chongqing, China aut Wei Lianbo The Cuizhuang Coalmine Co. Ltd, Weishan County, 277606, Shandong, China aut Bulletin of Engineering Geology and the Environment Springer Berlin Heidelberg 74/3(2015-08-01), 1019-1035 1435-9529 74:3<1019 2015 74 10064 https://doi.org/10.1007/s10064-014-0674-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10064-014-0674-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sui Wanghua School of Resources and Geosciences, State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, 1 University Ave (Daxuelu), 221008, Xuzhou, Jiangsu, China aut NATIONALLICENCE 700 1- Hang Yuan School of Resources and Geosciences, State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, 1 University Ave (Daxuelu), 221008, Xuzhou, Jiangsu, China aut NATIONALLICENCE 700 1- Ma Luxing School of Resources and Geosciences, State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, 1 University Ave (Daxuelu), 221008, Xuzhou, Jiangsu, China aut NATIONALLICENCE 700 1- Wu Zhaoyang School of Resources and Geosciences, State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, 1 University Ave (Daxuelu), 221008, Xuzhou, Jiangsu, China aut NATIONALLICENCE 700 1- Zhou Yongjie School of Resources and Geosciences, State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, 1 University Ave (Daxuelu), 221008, Xuzhou, Jiangsu, China aut NATIONALLICENCE 700 1- Long Guoqing Pan-China Group Inc., Chongqing Branch, 85 Jinyudadao, 401120, Chongqing, China aut NATIONALLICENCE 700 1- Wei Lianbo The Cuizhuang Coalmine Co. Ltd, Weishan County, 277606, Shandong, China aut NATIONALLICENCE 773 0- Bulletin of Engineering Geology and the Environment Springer Berlin Heidelberg 74/3(2015-08-01), 1019-1035 1435-9529 74:3<1019 2015 74 10064