中南大学学报（自然科学版）2017，Vol.48Issue(2)：418-426,9.DOI:10.11817/j.issn.1672-7207.2017.02.021
地下洞室围岩EDZ判别方法及标准
Assessment methods and criterion of EDZ for underground caverns
摘要
Abstract
EDZ concept is defined, and it is subdivided into inner zone and outer zone. Four monitoring methods, i.e., elastic wave velocity, multipoint displacement meter, BTV and AE, are suggested for engineering practice after insight reviewing of the all monitoring methods. The main research results are as follows. Based on the acoustic wave test, the EDZ of the surrounding rock can be determined by analyzing the velocity-depth curve and calculating the damage factor D.Based on the results of multi-point displacement meter and BTV, the EDZ of surrounding rock can be determined by calculating the displacement (opening)-depth curve and the strain of each section. Through analyzing the number of AE events and their frequency, the EDZ depth can be determined. Compared with the qualitative classification of single index, the first proposed EDZ comprehensive discriminant method and discriminant criterion have the characteristics of objective and comprehensive, which can discriminate the depth of EDZ qualitatively and quantitatively.关键词
开挖损伤区/声波/多点位移计/钻孔电视/声发射Key words
excavation damaged zone (EDZ)/elastic wave velocity/multipoint displacement meter/borehole television (BTV)/acoustic emission (AE)分类
建筑与水利引用本文复制引用
徐光黎,李志鹏,宋胜武,陈卫东,张世殊,董家兴..地下洞室围岩EDZ判别方法及标准[J].中南大学学报（自然科学版）,2017,48(2):418-426,9.基金项目
国家自然科学基金资助项目(41472263) （41472263）
雅砻江水电开发联合研究基金重点资助项目(50539100) （50539100）
中国水电工程顾问集团公司科研项目(P099)(Project(41472263) supported by the National Natural Science Foundation of China （P099）
Project(50539100) supported by Yalong River Hydropower Development Joint Key Research Fund （50539100）
Project(P099) supported by China Hydropower Engineering Consulting Group) （P099）
