Abstract The construction of the Xiongdongwan tunnel on the Lanzhou-Chongqing railway was very risky because it passes through a soft and fractured coal measure strata, with the rock stratum containing goafs and gas. This paper analyzes the various risks concerning construction in a goaf, including gas bursts, mud bursts, water inflow, and deformation and collapsing of surrounding rock. It also addresses the measures to avoid these risks, including a review of the significant risk sources, advance geological forecasting, construction resource control, and management of the construction unit.
Abstract：
The construction of the Xiongdongwan tunnel on the Lanzhou-Chongqing railway was very risky because it passes through a soft and fractured coal measure strata, with the rock stratum containing goafs and gas. This paper analyzes the various risks concerning construction in a goaf, including gas bursts, mud bursts, water inflow, and deformation and collapsing of surrounding rock. It also addresses the measures to avoid these risks, including a review of the significant risk sources, advance geological forecasting, construction resource control, and management of the construction unit.
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Cite this article:
.Construction Safety controls of the Xiongdongwan Tunnel Passing Through the Coal Mine Goaf[J] MODERN TUNNELLING TECHNOLOGY, 2012,V49(4): 133-139
2012, Vol. 49 