覆盖型岩溶塌陷临界水位降幅模型试验研究

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英文篇名：Experiment Research of the Critical Water Level Fell of Covered Karst Collapse 作者：张鑫 ; 崔可锐 ; 査甫生 英文作者：ZHANG Xin;CUI Ke-rui;ZHA Fu-sheng;Heifei University of Technology; 关键词：临界水位降幅 ; 模型试验 ; 塌陷 ; 覆盖型岩溶 英文关键词：critical drawdown;;model experiment;;collapse;;covered Karst 中文刊名：KXJS 英文刊名：Science Technology and Engineering 机构：合肥工业大学资源与环境工程学院; 出版日期：2016-04-28 出版单位：科学技术与工程 年：2016 期：v.16;No.373 语种：中文; 页：KXJS201612033 页数：5 CN：12 ISSN：11-4688/T 分类号：198-202

摘要

在考虑覆盖型岩溶塌陷各种影响因素的基础上,通过理论分析和室内模型试验,定量化的研究水位下降对岩溶塌陷的影响及其变化规律。结果表明,急剧的水位变化是影响覆盖型岩溶塌陷的重要因素,受覆盖层土体性质、溶洞内气压、溶洞开口大小等因素的影响。提出了水位下降过程中临界水位降幅公式;并以室内模型试验为例,对该公式进行验证评价,计算所得的塌陷临界水位降幅与实际情况符合较好。
        Considering the various factors of covered karst collapse,quantitative research drawdown and its variation based on experiment and theoretical studies,the results show that abrupt changes in water level is an important factor for the collapse of covered karst. In the meanwhile,the types of covered soils,the pressure inside the cave,the cave opening size and other factors are also important. The critical water level drop formula was set up. An evaluation of a critical water level decline in the indoor model experiment was completed using this formula. The calculated results are in good agreement with the actual situation.

引文

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