奥陶系顶部风化带土石混合体渗透性研究

doi:10.11799/ce201610029

煤炭工程 ›› 2016, Vol. 48 ›› Issue (10): 92-95.doi: 10.11799/ce201610029

奥陶系顶部风化带土石混合体渗透性研究

裴亚兵¹,李文平²,刘强强²,王启庆¹,颜士顺¹

1. 中国矿业大学
2. 中国矿业大学资源与地球科学学院

收稿日期:2015-11-23 修回日期:2016-01-23 出版日期:2016-10-10 发布日期:2016-11-03
通讯作者: 裴亚兵 E-mail:yabingp@126.com

Research for the Permeability of the Earth-rock Aggregate: a Case Study in the Weathering Zone on Top Ordovician

Received:2015-11-23 Revised:2016-01-23 Online:2016-10-10 Published:2016-11-03

摘要/Abstract

摘要： 针对华北奥陶系顶部存在碳酸盐岩隔水层的观点，对奥灰顶部岩层的渗透性进行研究，在了解岩层组成结构的基础之上，分析粘性土含量和孔隙率两个重要影响因素与粘性土-砾石混合土体渗透系数之间的关系。采用室内渗透试验，测定粘性土含量和孔隙率在不同水平组合下的渗透系数，确定两者对于渗透系数影响的大小。并对试验结果进行回归分析，得出粘性土含量和孔隙率与粘性土-砾石混合土体的渗透系数之间的关系，提出渗透系数的计算公式。

关键词: 奥灰系, 风化带, 土石混合体, 渗透系数, 粘性土含量, 孔隙率

Abstract: This paper studied the permeability of limestone on top strata of Ordovician due to the viewpoint that carbonate aquifuge is existed in the top of Ordovician in North China. Based on the investigation of the composition and structure of strata, we analyzed the relation between two key factors (clay content and porosity) with permeability coefficient of earth-rock aggregate. Laboratory test for permeability had been utilized in this study to measure the permeability coefficient with different combinations of clay content and porosity, determining the influence that exerted from both factors on permeability coefficient. According to the regressive analysis of experimental data, it is able to obtain the empirical relationship between both factors with the permeability coefficient of earth-rock aggregate. A formula for calculation of the permeability coefficient had been proposed and provide theoretical basis for actual engineering application.

中图分类号:

TD741

裴亚兵，李文平，刘强强，王启庆，颜士顺. 奥陶系顶部风化带土石混合体渗透性研究[J]. 煤炭工程, 2016, 48(10): 92-95.

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奥陶系顶部风化带土石混合体渗透性研究

Research for the Permeability of the Earth-rock Aggregate: a Case Study in the Weathering Zone on Top Ordovician

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