基于与测线交切半迹长的岩体随机结构面平均直径估算  

Mean diameter estimation of rock mass random discontinuities based on the semi-trace length measured by survey line

作　　者：曹洋兵 谢浩 张遂[3] 黄真萍[1] 邱冬冬 关慰清 CAO Yangbing;XIE Hao;ZHANG Sui;HUANG Zhenping;QIU Dongdong;GUAN Weiqing(Zijin School of Geology and Mining,Fuzhou University,Fuzhou,Fujian 350108,China;Key Laboratory of Geohazard Prevention of Hilly Mountains,Ministry of Natural Resources(Fujian Key Laboratory of Geohazard Prevention),Fuzhou,Fujian 350003,China;103 Geological Brigade of the Bureau of Geology and Mineral Exploration and Development in Guizhou Province,Tongren,Guizhou 554300,China;Oil-Petrochemical Project Quality Supervision Station,Beijing 102500,China)

机构地区：[1]福州大学紫金地质与矿业学院,福建福州350108 [2]自然资源部丘陵山地地质灾害防治重点实验室(福建省地质灾害重点实验室),福建福州350003 [3]贵州省地质矿产勘查开发局一〇三地质大队,贵州铜仁554300 [4]石油化工工程质量监督总站,北京102500

出　　处：《福州大学学报（自然科学版）》2023年第1期133-139,共7页Journal of Fuzhou University(Natural Science Edition)

基　　金：福建省自然科学基金资助项目(2019J05036);自然资源部丘陵山地地质灾害防治重点实验室(福建省地质灾害重点实验室)开放基金资助项目(FJKLGH2022K002);贵州省地质矿产勘查开发局地质科研项目(黔地矿科合[2020]1号);贵州省高层次创新型人才(黔科合平台人才[2020]6019)。

摘　　要：假定岩体随机结构面形状为薄圆盘,为能科学合理估算其平均直径,基于半迹长测线法,在未对分布形式作任何假设的条件下,通过理论推导获得与测线交切半迹长和岩体随机结构面直径之间的普适关系式.为便于工程应用,假设岩体随机结构面直径服从负指数分布,推导出其平均直径和与测线交切平均半迹长的关系式,基于该式提出一种岩体随机结构面平均直径的估算方法.采用岩体随机结构面三维网络模拟技术对此方法进行应用检验,结果表明,该方法具有较高的准确性与较强的工程适用性.The rock mass random discontinuities are assumed to be thin disks.In order to estimate the mean diameter of rock mass random discontinuities scientifically and rationally,based on the semi-trace length of scanline method,the common relation between the semi-trace length measured by survey line and the diameter of rock mass random discontinuities is obtained by theoretical derivation without any assumption of the distribution form.For the convenience of engineering application,assuming that the diameter of rock mass random discontinuities obeys the negative exponential distribution.The relationship between the mean diameter of rock mass random discontinuities and the mean semi-trace length measured by survey line was derived.Based on that,a new method for estimating the mean diameter of rock mass random discontinuities was proposed.This method was applied and tested based on the 3D network simulation technology,showing high accuracy and good engineering applicability.

关 键 词：岩体 随机结构面 平均直径 测线法 半迹长 三维网络模拟 

分 类 号：P642[天文地球—工程地质学] TU457[天文地球—地质矿产勘探]