1Some scientific issues in water-preserved coal miningFAN Limin667-6742Groundwater level threshold under the constrain of ecology security in mining areaMA Xiongde, HUANG Jinting, LI Jixiang, NING Shixiong675-6803Research on three-field evolution and rational coal pillar staggered distance in shallow buried closely spaced multi-seam miningHUANG Qingxiang, CAO Jian, DU Junwu, LI Xiongfeng681-6894Dynamics process analysis of groundwater quantity loss of roof aquifer with shallow seam mining in Western ChinaJIN Dewu, ZHOU Zhenfang, ZHAO Chunhu, FENG Longfei, XU Feng690-7005Disturbance characteristics of coal mining to the eco-phreatic flow field in adjacent regionsDAI Gelian, XUE Xiaoyuan, NIU Chao, XU Ke, JIANG Zequan, XIAO Lele, LIU Meile701-7086Study on water-preserved mining technology of burnt rock aquifer beside the large reservoir in Shenfu mining areaDONG Shuning, YANG Zhibin, JI Zhongkui, WANG Shidong, GAO Xiaowei, JIANG Qiu709-7177Grade types of water-preserved coal mining coalmines in ecologically fragile areaLI Wenping, WANG Qiqing, LIU Shiliang, WANG Sujian718-7268Theories and methods of efficiency water conservation mining in short-distance coal seamsMA Liqiang, ZHANG Dongsheng, JIN Zhiyuan, WANG Shuokang, YU Yihe727-7389Coordinated waterproof mining mode under thick loose sand stratum in Barapukuria coal mineYU Xueyi, MAO Xuwei, GUO Wenbin739-74610Geological model of water preserved mining in Karst mountain areas in southwest ChinaLI Tao, GAO Ying, AI Dechun, YANG Junwei747-75411Definition and distinguishing method of critical mining degree of overburden failureGUO Wenbing, LOU Gaozhong755-76612Law of mining induced water conduction fissure in arid mining area and its significance in water-preserved coal miningXU Zhimin, SUN Yajun, GAO Shang, ZHANG Chenghang, BI Yu, CHEN Zhongsheng, WU Jiangfeng767-77613Influence of multiple mining damage on the stability of water-resisting control strataFENG Guorui, BAI Jinwen, YANG Wenbo, WANG Shanyong, KANG Lixun777-78514Lithology and fissure characteristics of overburden in high-intensity miningYANG Daming, GUO Wenbing, TAN Yi, WANG Yuxi, MA Xiaochuan, LI Zhuang786-79515Calculation of water-retention thickness for broad applicability and mining influence in Mu Us Desert areaHE Xiaolang, XIA Yucheng, DING Xiang, SUN Xueyang796-80316Seepage law of bedrock aquifer and water-preserved mining technology in deep coal seam miningGUO Xiaoming, DONG Shuning804-81117Abundance of aquifers in Yushenfu coal field and the measures for water-preserved coal miningHOU Enke, CHE Xiaoyang, FENG Jie, DUAN Zhonghui, GAO Lijun, LI Jun812-81918Roof stability analyses of “water-preserved and water-stored” coal mining with constructional backfill miningDU Xianjie, FENG Guorui, QI Tingye, GUO Yuxia, WANG Zehua, ZHANG Yujiang, LI Zhen, BAI Jinwen820-82919Research on carrying capacity of geological environment based on the concept of water-preserved coal miningSUN Kui, FAN Limin, XIA Yucheng, LI Cheng, CHEN Jianping, WU Boyun, PENG Jie830-83920Joint effects of groundwater and aridity index on the transpiration of vegetation:A case study in the Yushen mining areaWANG Qiangmin, JIN Dewu, WANG Wenke, LIU Ji, YANG Jian, ZHAO Chunhu, DONG Xingling, SHANG Hongbo840-846 