|
|
|
ANALYSIS ON PARTIAL SHORT-SUPPORTING EFFECT IN
HIGH STRESS TUNNEL |
|
|
|
|
Abstract The instability happens in high-stress tunnels in two cases，full supporting or short supporting. Tunnel bracing will be destroyed at the short supporting position when the rock popping-out is large enough. The short supporting is a common phenomena with lack of researching. The analysis of partial short supporting effect is studied on the basis of elastic and viscoelastic theory. The mechanism of heaving and instability of roof and side wall is analyzed. As result，a new rationale is proposed for the design of tunnel support.
|
|
Received: 21 March 2003
|
|
|
|
| [1] |
LI Botao1, 2, 3, TAN Yuxuan1, LIN Haifei4, 5*, WEI Jianping1, 2, 3, ZHANG Hongtu1, 2, 3, LI Shugang4, 5, WEI Zongyong4, 5, WANG Pei4, LUO Rongwei4, LIU Yanwei1, 2, 3. Mechanical properties and mesoscopic damage evolution of coal under liquid-nitrogen freezing at different initial temperatures[J]. , 2026, 45(6): 1757-1772. |
|
|
|
|
