Abstract Using the water inflow and mud burst at the karst area of the new Longfeng tunnel on the Lanzhou-Chongqing Railway as an example, this paper analyzes the causes of tunnel water inflow in terms of karst development strength, horizontal and vertical zoning of karst hydrodynamic force, and atmospheric rainfall based on the study of geological environment and karst development characteristics. It points out that the disclosing of medium and small karst channels is the main cause of water inflow in the new Longfeng tunnel and atmospheric rainfall is the main control factor.
Abstract:
Using the water inflow and mud burst at the karst area of the new Longfeng tunnel on the Lanzhou-Chongqing Railway as an example, this paper analyzes the causes of tunnel water inflow in terms of karst development strength, horizontal and vertical zoning of karst hydrodynamic force, and atmospheric rainfall based on the study of geological environment and karst development characteristics. It points out that the disclosing of medium and small karst channels is the main cause of water inflow in the new Longfeng tunnel and atmospheric rainfall is the main control factor.
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Cite this article:
.Analysis of the Water Inflow in the New Longfeng Tunnel on the Lanzhou-Chongqing Railway[J] MODERN TUNNELLING TECHNOLOGY, 2012,V49(4): 42-45