瀑布沟水电站地下厂房施工期安全监测成果及特征分析  

Safety Monitoring and Analysis of Pubugou Underground Powerhouse in the Period of Construction

作　　者：令狐克海 彭琦[2] 李小余[2] 

机构地区：[1]国电大渡河流域水电开发有限公司瀑布沟水电建设分公司,四川汉源625300 [2]四川大学水利水电学院,四川成都610065

出　　处：《水力发电》2010年第6期67-70,共4页Water Power

摘　　要：地下厂房是瀑布沟水电站的关键性工程之一,其围岩的变形稳定至关重要。通过对地下厂房施工期安全监测资料的综合分析,发现变形、应力较大值主要集中在岩锚梁及拱肩部位,最大变形值达到77.39 mm;变形、应力变化具有明显的相关协调性,且与施工进度存在密切联系,其变化曲线具有"台阶"状的特征;围岩变形的量值和分布特征受地质条件影响比较突出,尤其是与岩脉、断层等结构面密切相关。随着地下厂房开挖工程的完成,围岩变形基本稳定,地下厂房整体稳定性较好。The monitoring data of Pubugou underground powerhouse in the period of construction was analyzed. The greater deformation and stress locates on the rock anchor beam and spandrel, and the maximum deformation is 77.39 mm. The change of deformation and stress is obvious correlation and closes to the construction progress. The change curves of deformation and stress are step-changed. The magnitude and distribution of rock deformation is influenced primarily by the geological conditions, especially veins and faults. With the completion of underground excavation, the surrounding rock deformation is stable and the overall stability of underground powerhouse is excellent.

关 键 词：地下厂房 变形 应力 分布特征 瀑布沟水电站 

分 类 号：TV74[水利工程—水利水电工程]