Field measurement study on deformation and destruction of "three-soft" coal seam floor of Chaohua Coal Mine
ZHU Shuyun 1, JU Yuanjiang 1, ZHAO Zhenzhong 2, LIU Deqian 1
1. School of Resources and Earth Science China University of Mining and Technology Xuzhou 221116 China 2. Department of Prevention and Treatment for Coal Mine Water Zhengzhou Coal Group Co. Ltd. Zhengzhou 450006 China
Abstract：The depth of deformation and destruction and the zone of variation in front of mining working face under the mining effect of the "three-soft" coal seam floor of Chaohua Coal Mine in Zhengzhou mining area are systematically studied by use of the field strain measurement. Thick soft coal seam and soft floor have a buffer action on the stress and deformation under the normal condition, and the vertical stress is much greater than the horizontal stress because of the influence of stress concentration. The middle section of limestone has an important controlling function to the stress distribution and deformation and destruction. It provides the basis for the seepage prevention and treatment of floor water for mining deep coal in the west of Henan Province.
朱术云；鞠远江；赵振中；刘德乾；. 超化煤矿“三软”煤层采动底板变形破坏的实测研究[J]. 岩土工程学报, 2009, 31(4): 639-642.
ZHU Shuyun 1, JU Yuanjiang 1, ZHAO Zhenzhong 2, LIU Deqian 1. Field measurement study on deformation and destruction of "three-soft" coal seam floor of Chaohua Coal Mine. Chinese J. Geot. Eng., 2009, 31(4): 639-642.
