Study on tunneling in rock masses with inclined layers using discontinuous deformation analysis (DDA)

Jian Hong Wu, Yuzo Ohnishi, Satoshi Nishiyama

研究成果: Paper同行評審

摘要

The behaviors and stress distributions of the inclined jointed rock masses with different dip angles obtained from DDA are compared to the results of laboratory tests. By calculating the block stress distributions, it is confirmed that DDA can reproduce the arching around the trap door when lowering the trap door. The shapes of arching change with the angles of inclined layers. In addition, the earth pressures acting on the trap door shows non-symmetrical distributions when the layers are not horizontal. The stress concentration occurs in one side of the rock masses close to the trap door. Furthermore, the surface settlements are also related to the inclined angle, and the loosening zone in rock masses can be different from Terzghi's theory [1]. Since, simulations have good agreements with the laboratory test, it demonstrates the applicability of DDA to explain the mechanical behaviors of tunnel, such as arching phenomenon, non-symmetrical earth pressure distributions acting on the trap door, and the surface settlement profile in the jointed rock masses.

原文English
頁面1343-1346
頁數4
出版狀態Published - 2003
事件10th International Society for Rock Mechanics Congress, ISRM 2003 - Sandton, South Africa
持續時間: 2003 九月 82003 九月 12

Other

Other10th International Society for Rock Mechanics Congress, ISRM 2003
國家/地區South Africa
城市Sandton
期間03-09-0803-09-12

All Science Journal Classification (ASJC) codes

  • 地球化學與岩石學
  • 地球物理

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