地下厂房洞室群开挖三维初始应力场反演分析  

Inversion analysis of 3D initial stress field of underground powerhouse excavation

作　　者：黄敏 唐绍辉 黄英华 吴亚斌 HUANG Min TANG Shaohui HUANG Yinghua WU Yabin(Changsha Institute of Mining Research Co. , Ltd. , Changsha 410012, China State Key Laboratory of Metal Mine Safety Technology, Changsha 410012, China)

机构地区：[1]长沙矿山研究院有限责任公司,长沙410012 [2]金属矿山安全技术国家重点实验室,长沙410012

出　　处：《有色金属（矿山部分）》2017年第5期60-63,共4页NONFERROUS METALS(Mining Section）

基　　金：湖南省重大科技专项(2011FJ1003);973计划课题(2010CB735507);国家安全生产监督管理总局安全生产重大事故防治关键技术科技项目(hunan-0010-2014AQ)

摘　　要：针对某抽水蓄能电站地下厂房洞室群开挖计算前无法得出准确初始应力场的问题,提出了多种试算反演方案。结合现场实际情况,在考虑自重应力场与构造应力场、并施加应力梯度的共同作用下,通过反演计算分析得出了最贴近实测的原岩应力状态,可作为下一步地下厂房洞室群开挖及大体积光面砼浇筑数值模拟计算的基础,该研究成果具有一定的指导意义,为后续三维数值模拟计算提供参考依据。Aiming at the problem that the initial stress field can not be obtained before the excavation of the underground powerhouse cavern group of a pumped storage power station,a variety of trial inversion schemes were put forward.Based on the actual real situation,considering the common action of gravity stress field and tectonic stress field,and applied stress gradient,through the inversion calculation analysis,the closest in-situ rock stress can be obtained.Which can be taken as the basis of numerical simulation calculating the excavation of the caverns and large volume concrete pouring smooth underground powerhouse under a step,the study has certain guiding significance,providing a reference for the subsequent simulation of three-dimensional numerical calculation.

关 键 词：FLAC^3D 地下厂房 数值模拟 

分 类 号：TD311[矿业工程—矿井建设]