jgg     2015 35 (5):  821-824    ISSN: 0412-1961  CN: 21-1139/TG A New Prediction Method of Surface Subsidence Based on  Weighted Logistic-Richards Combination Model 1 Hunan Key Laboratory of Coal Resources Clean-Utilization and Mine Environment Protection, Hunan University of  Science and Technology, 1 Taoyuan Road, Xiangtan 411201,China 2 Institute of Geomatics and Deformation Monitoring, Hunan University of Science and Technology, 1 Taoyuan Road,  Xiangtan 411201,China 3 China Construction Fifth Engineering Division Corp.,Ltd,Longshan Street, Chongqing 401147, China Received: 2015-03-12  Revised: null  Online: 2015-10-10 Supporting info