项目名称: 基于高密度电阻率成像技术的岩体裂隙网络空间结构特征研究
项目编号: No.41202174
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 天文学、地球科学
项目作者: 王刚
作者单位: 山东农业大学
项目金额: 25万元
中文摘要: 由于岩体中裂隙网络空间分布的随机性以及岩体的极端非均质和各向异性,使得对岩体中裂隙网络空间分布结构特征的获取十分困难,尤其是低渗透性裂隙岩体。本项目拟整合高密度电阻率成像法的地球物理成像技术和数值模拟技术手段,开展多维空间不同尺度条件下岩体中裂隙网络空间分布结构特征的研究。为克服传统地质测量既耗时又费力的缺陷,本课题拟首先在室内进行研究高密度电阻率成像法的地球物理成像技术探测岩体中裂隙网络的可行性和解析度,进而应用于野外实际场地中进行研究,以判定其可靠性,继而建立起岩体的地电-裂隙网络耦合数值模型。综合大量的较易获得的地球物理数据和其他少量的已知信息,利用数据融合的方法检验和验证耦合模型,利用验证后的模型来评估岩体中裂隙网络的特征。无论是对未知领域的探讨,还是对高密度电阻率成像方法的地球物理成像技术的应用推广及对岩体中裂隙网络特征获取方面的研究,本课题都具有重要的科学意义和应用价值。
中文关键词: 高密度电阻率成像;岩体;地下水;裂隙网络;地质处置
英文摘要: For the stochastic distribution of fracture network in space and the extremely heterogeneous and anistropic properties of the rock mass, it becomes very difficult to acquire the spatial distribution structure properties of the fracture network within the rock mass, especially for the low-permeable rock mass. This research would mainly focus on the the spatial distribution structure identification of the fracture network within the rock mass under multi-space scales and dimensions conditions by integrating the geophysical imaging technology of the high-density electrical resistivity tomography and the numerical simulation method. In order to overcome the both time-consuming and laborious deficiencies during the traditional geological survey,first the study will investigate the feasibility and the resolution for the fracture network's identification by the geophysical imaging technique of the electrical resistivity tomography (ERT), second apply the geophysical imaging technology into the field identification experiment to judge the reliability, and then built the numerical models coupled geoelectrical and fracture network. Synthesizing the abundant geophysical data which are relatively obtained and the fewer known information, using the data fusion method to examine and verify the coupled model, and utilizing th
英文关键词: High-density electrical resistivity tomography;rock mass;groundwater;fracture network;geological disposal