岩溶地区防渗帷幕采用不封闭及间断式布置探讨

防渗帷幕在岩溶区采用不封闭及间断式布置已有成功的案例,但因缺乏理论支撑,在实施过程中也存在争议和风险.为此,本文在对多个工程案例进行分析和研究的基础上,结合已有较成熟的理论,通过简化模型,以水力学为基础,论证了这种布置方式与Lane统计法具有较高的吻合度.因此,在实际工作中,结合工程具体情况,在获得详实的地勘资料基础上,就可以在岩溶区采用不封闭及间断式防渗帷幕布置,从而有利于加快工程建设进度和节省投资.

Unclosed and intermittent layout of anti-seepage curtain in karst regions

The unclosed and intermittent layout of the anti-seepage curtain has been applied successfully in karst regions. However, due to the lack of theoretical support, some controversy and risks are encountered in the process of its practical implementation. Based on the investigation and analysis of existing projects, Lane statistical method and hydraulics by simplifying the related model, this paper demonstrates the applicability of this kind of seepage control curtain in the karst regions. Results indicated that there was a good agreement between anti-seepage curtain and the Lane statistical method. Namely, the unclosed and intermittent layout of anti-seepage curtain can be applied in the karst regions with the detailed geological investigation data of the projects. Moreover, it helps accelerate the progress of project constructions and also saves project investments.