大山口二级水电站引水隧洞围岩稳定性研究  

Research on Surrounding Rock Stability of Diversion Tunnel for Dashankou Secondary Hydropower Station

作　　者：余超[1] 陈星[2] 邓华锋[2] 李俊美[2] 

机构地区：[1]新疆农业大学水利土木工程学院,新疆乌鲁木齐830000 [2]三峡大学土木与建筑学院,湖北宜昌443002

出　　处：《水电能源科学》2010年第9期86-88,共3页Water Resources and Power

基　　金：新疆水利水电工程重点学科基金资助项目(xjzdxk-2002-10-05);新疆高校科研计划基金资助重点项目(xjEDU2005I09);三峡大学硕士学位论文培优基金资助项目(2010PY018)

摘　　要：基于AutoCAD To ANSYS(ADINA)三维建模程序,利用AutoCAD生成ANSYS(ADINA)命令流文件、ANSYS完整建模和网格划分、FLAC计算、采用TECPLOT后处理的建模计算后处理流程,极大提高了数值仿真效率和精度。以大山口二级水电站引水隧洞围岩为例进行围岩稳定性仿真分析,评价引水隧洞开挖后的稳定性,建议重点支护引水隧洞桩号1 200 m左右洞段,可适当加厚衬砌,断层或挤压破碎带与洞室开挖面交汇处施加一定数量的预应力锚索,在洞顶布设一定数量的监测点,并随时跟踪洞室关键点的位移发展情况。Based on three-dimensional modeling program AutoCAD To ANSYS(ADINA),the efficiency and precision of numerical simulation are greatly improved by using AutoCAD to generate ANSYS(ADINA) command stream files,complete modeling and mesh generation with ANSYS,FLAC calculation and TECPLOT post-processing.Taking simulation analysis of surrounding rock stability of diversion tunnel for Dashankou secondary hydropower station for an example,stability of diversion tunnel after excavating is evaluated.And some suggestions are put forward: the diversion tunnel with stake number 1 200 m should be importantly supported,lining can be properly thickened,certain amount of prestressed anchors should be put at the intersection part of fault or compression fracture zone and cavern excavation,and a certain amount of monitoring points should be laid on the top of cave to track the development of displacement at the key points at any time.

关 键 词：大山口 二级水 电站引水 隧洞围岩 稳定性研究 HYDROPOWER Station DIVERSION Tunnel Surrounding Rock 引水隧洞 ANSYS AutoCAD 建模程序 后处理 预应力锚索 围岩稳定性 挤压破碎带 ADINA 位移发展 网格划分 隧洞开挖 

分 类 号：TK79[动力工程及工程热物理—流体机械及工程] TV7[水利工程—水利水电工程]