【作者】 苏锐； 王驹； 季瑞利； 郭永海； 宗自华； 徐健；

【Author】 Su Rui;Wang Ju;Ji Rui-li;Guo Yong-hai;Zong Zi-hua;Xu Jian;Beijing Research Institute of Uranium Geology;

【机构】 核工业北京地质研究院；

【摘要】 现场准确测量低渗透性裂隙岩体的水文地质特征参数一直是低渗透性岩体水文地质研究的难点之一,是高放废物地质处置库选址和场址评价水文地质调查的基础工作。提出用双栓塞斯拉格闭合试验解决低渗透性裂隙介质深部环境渗透特征评价的新技术。系统描述了双栓塞斯拉格闭合试验技术的主要构成,包括试验设备、试验设计、试验准备、试验的现场实施和数据综合分析等过程。建立了考虑温度效应、钻孔储存效应和水位瞬时变化特征的地下水流三维数值模型和相应的计算机程序,完善了斯拉格试验理论模型,扩大了双栓塞试验技术的应用范围。应用这项技术在甘肃北山预选区开展了钻孔水文地质试验研究。研究结果表明,双栓塞斯拉格闭合试验技术是一项适合于低渗透性裂隙介质深部环境渗透特征评价的先进、可靠的技术方法。更多还原

【Abstract】 Accurate measurement of hydraulic parameters in low permeability rocks is one kind of challenges in hydrogeology.However it is an important basic work of hydrogeological investigation in situ.A new technique,double-packer slug shut-in test is presented to characterize the hydraulic property of fractured rock with low permeability in the deep environment.The technique consists of advanced equipments,detailed test design,test preparation,in situ implementation and comprehensive interpretation of data.A 3-D numerical model of groundwater flow has been established.The temperature effect has been considered in the numerical model,borehole storage effect and instantaneous change of water level as well.The theory of traditional slug test is improved and the range of use of double-packer hydraulic test is extended.By using this technique,hydraulic tests have been conducted in the Beishan preselected area.It has been shown from the results that the double-packer slug shut-in test is an advanced and reliable approach suitable for the estimation of hydraulic parameters of fractured medium with low permeability in the deep environment.更多还原