|
||||||||
|
|
| 2017, Vol. 54(5): 200-208 DOI: | ||
| Optimization for Excavation Spacing of Two Lower Tunnel Tubes at Overlapped Section with a Minimum Clear Distance | ||
| (1 College of Civil Engineering and Architecture, Shandong University of Science and Technology Qingdao, Shandong 266590; 2 No.1Engineering Co., Ltd. of China Railway Construction 17 Bureau Group Ltd., Taiyuan 030032; 3 Ji′nan Rail Transit Group Co., Ltd.,Jinan 250101) | ||
| Received null Revised null | ||
| Supporting info | ||
|
