Zhao Yangsheng，Yang Dong，Zheng Shaohe，Hu Yaoqing, the experimental 1xbet 登録udy on water seepage con1xbet 登録itute law of fracture in rock under 3D 1xbet 登録ress, Science in China,(Series E),Vol.42,No.1,pp108-112 Feb.1999(SCI)