滇中引水工程白云岩砂化分级体系研究  

Study on Classification System of Sandified Dolomite Mass in Central Yunnan Water Diversion Project

作　　者：刘万林 赵泽昌 张翼翔[2] 廖沄 龚强 LIU Wanlin;ZHAO Zechang;ZHANG Yixiang;LIAO Yun;GONG Qiang(China Railway Development and Investment Co.,Ltd.,Kunming 650000,China;Southwest Jiaotong University,Chengdu 610031,China;China Railway Erju 1st Engineering Co.,Ltd.,Guiyang 550007,China)

机构地区：[1]中铁开发投资集团有限公司,昆明650000 [2]西南交通大学,成都610031 [3]中铁二局第一工程有限公司,贵阳550007

出　　处：《路基工程》2022年第6期40-44,共5页Subgrade Engineering

基　　金：中铁二局科研项目:砂化白云岩地层引水隧洞施工关键技术研究项目(2020-重大专项-04-08)。

摘　　要：依托滇中玉溪段砂化白云岩洞段引水工程,经过现场勘探,结合岩体质量指标和声波测试分析,从地质主要特征、质量指标、围岩等级等方面区分不同砂化程度,将白云岩砂化程度划分为轻微砂化、中等砂化、强烈砂化、剧烈砂化四个等级。建立较完整的白云岩砂化程度分级体系,以指导工程设计和施工。Relying on sandified dolomite tunnel in Yuxi Section of Central Yunnan Water Diversion Project,through field investigation in combination with rock mass quality index and acoustic test analysis,the different sandifications were distinguished from such aspects as major geological characteristics,quality index and surrounding rock grade,and the dolomite sandification was divided into four grades:slightly sandified,moderately sandified,heavily sandified and intensely sandified.A relatively complete dolomite sandification classification system was established to guide engineering and construction.

关 键 词：白云岩 岩溶砂化 分级体系 滇中引水工程 岩体质量指标 声波测试 

分 类 号：U445[建筑科学—桥梁与隧道工程]