基于掌子面编录和地质雷达的综合超前预报技术

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Abstract Synthetic advanced forecast technique based on geological logging for tunnel face and ground penetrating radar(GPR) is proposed and put into practice in the case of a certain deep and long tunnel project. On the basis of regional engineering geology data analysis，the forecast scheme and time are optimized depending on tunnel face geological logging. Meanwhile，according to the occurrence of adverse geological body which has been partially exposed and the location of single side wall which has been seen，the border and influence length of adverse geological body on the two side walls and apex of arch are calculated through trigonometric functions. When getting close to special geological sections，more accurate short-term forecasts have been obtained using GPR to detect faults and underground water storage situations based on radar-wave reflection amplitude，phase and frequency. For a wide range of adverse geological body，the reliability of forecast can be improved with the strategy of continuous forecast，which is useful for the confirmation and feedback of the forecast. This synthetic geologic forecast method is applied to the tunneling construction passing through faults and water inflow sections，and gives a satisfied effect.

Key words： tunnelling engineering geologic hazards synthetic advanced geologic forecast technique geological logging for tunnel face ground penetrating radar(GPR)

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	Articles by authors
	WANG Zhenyu1
	CHENG Weifeng1
	LIU Yue2
	ZHANG Yuhao3

Cite this article:

WANG Zhenyu1,CHENG Weifeng1,LIU Yue2, et al. SYNTHETIC ADVANCED FORECAST TECHNIQUE BASED ON GEOLOGICAL LOGGING FOR TUNNEL FACE AND GROUND PENETRATING RADAR[J]. , 2010, 29(S2): 3549-3557.

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https://rockmech.whrsm.ac.cn/EN/Y2010/V29/IS2/3549

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