(1. State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology，Shandong University of Science and Technology，Qingdao，Shandong 266590，China；2. Shandong Society for Rock Mechanics and Engineering，Qingdao，Shandong 266590，China)
Abstract：In order to study the development of water and sand inrush across the overburden fissures due to coal mining，a simulation test system for water and sand inrush across overburden fissures due to coal mining was developed. The system consists of a load support bracket，a laboratory module，a confined water module，a coal mining simulator，a storage tank，a servo control system of hydraulic pressure and water yield，and a servo control system of displacement and stress. The system has the feature of large space for simulating，good visibility，good sealing，multiple loading methods and good precision. The coal strata in the western region of China were studied. New non-hydrophilic composite materials with the lower intensity were developed to simulate the coal strata. The excavation model reproduced the whole process of water and sand inrush across the overburden fissures due to coal mining. The deformation and failure of overburden，fissure extension of overburden，the formation of water and sand channels，and the parameters of water and sand inrush were obtained. Test results showed that the system was stable and reliable.
郭惟嘉1，2，王海龙1，陈绍杰1，2，李金平1. 采动覆岩涌水溃砂灾害模拟试验系统研制与应用[J]. 岩石力学与工程学报, 2016, 35(7): 1415-1422.
GUO Weijia1，2，WANG Hailong1，CHEN Shaojie1，2，LI Jinping1. Development and application of simulation test system for water and sand inrush across overburden fissures due to coal mining. , 2016, 35(7): 1415-1422.
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2016, Vol. 35 
