Surveying Karst Caves Under 14 Tunnels Bottom on Gui-Guang High-Speed Railway
In order to prompt the development in west China, it is necessary to construct high-speed railway. However, there are many limestone and dolostone, as well as karst caves in west China, especially in GuiLin city, which make it difficult to dig tunnel or build bridge. A new method, (named Landsonar by authors), which use an extremely small source-geophone distance single-channel was introduced and applied for surveying karst caves in 14 tunnels among 179 km railway. Landsonar result and boreholes recorder agree with each other.
KeywordsKarst caves Tunnel Landsonar Predication
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