拉洛水电站泄洪洞监测成果分析研究  

Analysis on Monitoring Data of Flood Discharge Tunnel of Laluo Hydropower Station

作　　者：郭修云 GUO Xiuyun(Laluo Hydro-junction and Irrigation District Administration of Tibet Autonomous Region,Lhasa 851414,Tibet,China)

机构地区：[1]西藏自治区拉洛水利枢纽及灌区管理局,西藏拉萨851414

出　　处：《水力发电》2022年第4期44-48,74,共6页Water Power

摘　　要：以拉洛水电站泄洪洞监测资料为基础,详细阐述了泄洪洞安全监测成果,对围岩变形、应力、渗流等情况进行了深入的分析,综合评价泄洪洞运行情况。分析结果表明:目前泄洪洞围岩变形量小,洞身围岩应力正常,衬砌接缝变形正常;3-3断面受右岸山体承压水过高影响,其变形渗压特征相对其他断面偏大,对洞身结构不利,建议加强监测并及时分析。同时,基于最大熵理论拟定了3-3断面渗透压力效应量的安全监控指标,为泄洪洞后期监测提供可靠依据。Based on the monitoring data of the flood discharge tunnel of Laluo Hydropower Station,the safety monitoring results of the tunnel are described in detail,and the deformation,stress and seepage of surrounding rock are analyzed to comprehensively evaluate the operation of tunnel.The analysis results show that the deformation of surrounding rock is small,and the stress of surrounding rock and the deformation of lining joints are normal.Affected by the high confined water in mountain on the right bank,the deformation and seepage pressure of Section 3-3 are larger than other sections,which is unfavorable to tunnel structure.Therefore,it is suggested to strengthen monitoring and timely analysis.At the same time,based on the maximum entropy theory,the safety-warning indexes of the seepage pressure effect of Section 3-3 are proposed to provide a reliable basis for the later monitoring of the flood discharge tunnel.

关 键 词：泄洪洞 监测资料 安全监控指标 成果分析 拉洛水电站 

分 类 号：TV651.3[水利工程—水利水电工程] TV698.1