降低滑坡地下水位的充气截排水法最佳充气压力研究

doi:10.13722/j.cnki.jrme.2016.0562

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Abstract he method of drainage cutoff by air filling is a new approach to improve the stability of slopes. Injecting the compressed air into the saturated soil slope forms an unsaturated zone which can prevent the water entering into the critical failure surface of the slope. In this study，laboratory experiment and numerical simulation were carried out to investigate the relationship between the air pressure and interception effect. Results show that the air filling has remarkable effect on water flow interception. For a given slope，there exist a start-up pressure and an optimal pressure of air filling. When the air pressure is greater than the start-up value，the water table can be lowered. When the pressure ranges between the start-up and optimal values，the water table decreases with the increase of air pressure. However，when the air pressure is higher than the optimal value，the water table increases with the increase of air pressure.

Key words： slope engineering water interception with compressed air numerical simulation physical model aerated pressure water table

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	Articles by authors
	YU Wenfei
	SUN Hongyue
	SHEN Jiayi
	WU Mengping

Cite this article:

YU Wenfei,SUN Hongyue,SHEN Jiayi, et al. Research on optimal air filling pressure for groundwater blocking and draining in slopes[J]. , 2017, 36(4): 890-898.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2016.0562 OR http://www.rockmech.org/EN/Y2017/V36/I4/890

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