jgg     2015 35 (2):  360-364    ISSN: 0412-1961  CN: 21-1139/TG Analysis of 3D Laser Scanning Ground Radius and Vertical Accuracy 1〓School of Earth Science and Surveying Engineering, China University of Mining and Technology(Beijing),  D11 Xueyuan Road, Beijing 100083, China 2〓Huainan Coal Mining Group Corporation Ltd, 1 Mid-Dongshan Road, Huainan 232000, China 3〓State Key Lab of Mine Ecological Environment Protection, 1 Mid-Dongshan Road, Huainan 232000, China 4〓State Key Laboratery of Deep Coal Mining & Environment Protection, 1 Mid-Dongshan Road, Huainan 232000, China Received: 2014-04-22  Revised: null  Online: 2015-04-15 Supporting info