| 1. | Xu yu , xu zhisheng . dynamic characteristics and security research of railway track when tunnel under construction with jack - in method . progress in safety science and technology , 2004 ( 4 ) : 989 - 993 徐? ,徐志胜,朱玛.高温作用后混凝土强度与变形试验研究.长沙铁道学院学报, 2000年02期 |