Whole Space Comprehensive Advanced Geological Forecast Technique in Shallow Buried Section of Tunnel

Abstract:

A new method named whole space comprehensive advanced geological forecast technique was constructed by surface spatial differential detection method combining with TSP203 system, the former can divide the distribution region, burial depth and thickness of each stratum from vertical direction clearly, and the letter can reveal the specific physical property of each stratum from horizontal direction, then combining both of them, the geological condition will be determined accurately. And then, this technique was tested and applied in a project as an example, the plan-validation results show: the formulations crossed by tunnel are full ~ strong weathered slate with rock broken zones, abundant groundwater and potential slip surface, even more, the range between crown and spandrel has irrupted into the gravel clays, all of these are unsafe for tunnel construction and suggest to have pre-supporting by 40 m Φ108 pipe shed. By comparing the results of prediction and in-situ, the whole space comprehensive advanced geological forecast scheme which avoids complexity of scheme, shortens forecasting cycle and reduces detection cost and construction interference, has encouraging forecast effect and significant popularization value.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 1211-1217
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.1211
• Online since: May 2012
• Authors: Ming Feng Lei, Li Min Peng, Cheng Hua Shi
• Keywords: Shallow-Buried Section, Surface Spatial Differential Detection, TSP203 System, Tunnel, Whole Space Comprehensive Advanced Geological Forecast Technique

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