钻孔岩体结构均质区划分方法研究

发布时间：2018-03-22 16:04

本文选题：岩体结构　切入点：均质区划分方法　出处：《长江科学院院报》2017年11期 　论文类型：期刊论文

【摘要】：岩体结构均质区是针对实际工程特点而划定的成果,在实践过程中需要根据具体工程,抓住主要矛盾后,选择最具影响性的要素作为划分依据。针对高放废物深地质处置工程中钻孔岩体渗透性研究,提出了定性和定量相结合的钻孔岩体结构均质区划分方法。研究表明:基于结构面力学成因的定性岩体结构均质区划分方法存在对破碎带和蚀变带等细节考虑不足的问题,而以定量分区为主的岩体结构统计均质区划分方法(Miller法),未考虑影响岩体渗透性的主要因素结构面隙宽。最后得出将定性和定量相结合的方法来确定均质区效果更佳,这样既可以考虑到更多的结构面参数,同时也可以细化分区范围。此均质区划分方法结果能为后续的结构面网络建模及渗流计算提供数据支持。
[Abstract]:The homogeneous zone of rock mass structure is the result of drawing according to the characteristics of actual engineering. In the process of practice, it is necessary to grasp the principal contradiction according to the concrete project. The most influential factors are selected as the basis of classification. The permeability of borehole rock mass in deep geological disposal engineering of high-level radioactive waste is studied. In this paper, a qualitative and quantitative method is proposed to divide the homogeneous zone of borehole rock mass structure. The study shows that the method based on the mechanical origin of structural plane has insufficient consideration for the details of fracture zone and alteration zone. However, the statistical homogeneous zoning method of rock mass structure based on quantitative zoning is Miller's method, which does not take into account the main factors affecting the permeability of rock mass. Finally, it is concluded that it is better to determine the homogeneous area by combining qualitative and quantitative methods. This method can not only take into account more parameters of structural plane, but also refine the area of partition. The result of homogeneous partition method can provide data support for subsequent modeling of structural plane network and calculation of seepage flow.
【作者单位】：西南石油大学土木与建筑学院;重庆大学煤矿灾害动力学与控制国家重点实验室;中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室;东华理工大学地球科学学院;
【基金】：国家自然科学基金项目(51104144)
【分类号】：TU45

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