大岗山右岸边坡卸荷裂隙密集带加固及稳定性评价研究.docxVIP

大岗山右岸边坡卸荷裂隙密集带加固及稳定性评价研究黎满林 1，2，卫蔚 1，2，张荣贵 1 大岗山右岸边坡卸荷裂隙密集带加固 及稳定性评价研究 黎满林 1，2，卫 蔚 1，2，张荣贵 1，2 (1. 中国电建集团 成都勘测设计研究院有限公司，四川 成都 610072；2. 国家能源水电工程技术研发中心 高混凝土坝分中心，四川 成都 610072) 摘要：大岗山水电站坝址区山体雄厚、岸坡陡峻，地形地质条件复杂。右岸工程边坡规模巨大，地质构造发育， 卸荷风化强烈，地震烈度高，坡体结构复杂，边坡稳定性问题极为突出。以工程地质条件为基础，深入研究边坡 的潜在滑移模式，并结合现场施工条件，提出右岸边坡卸荷裂隙密集带综合加固处理方案。采用多种方法对边坡 稳定性进行了计算分析，计算结果表明，加固处理后的右岸边坡满足稳定性控制标准；同时，现场监测资料也表 明，目前边坡稳定性状态良好，边坡加固处理方案合理、有效。 关键词：水利工程；大岗山水电站；高边坡；卸荷裂隙；加固处理；稳定分析 中图分类号：TV 31 文献标识码：A 文章编号：1000–6915(2014)11–2276–07 STABILITY EVALUATION AND REINFORCEMENT OF UNLOADING FISSURES IN RIGHT BANK OF DAGANGSHAN HYDROPOWER STATION LI Manlin1，2，WEI Wei1，2，ZHANG Ronggui1，2 (1. PowerChina Chengdu Engineering Corporation Limited，Chengdu，Sichuan 610072，China；2. High Concrete Dam Affiliation， National Hydropower Technology Research and Development Center，Chengdu，Sichuan 610072，China) Abstract：The topographical and geological condition of dam area of Dagangshan hydropower station is complex and the bank slope is steep. The well developed geological structures，unloading fissures，high earthquake intensity and complicated slope structures lead to the problem of stability of the high slope at the right bank. The potential sliding mode of the slope was studied in detail considering the site conditions of geology and construction. A synthetic scheme of reinforcing treatment was thus proposed and used for the belt with dense unloading fissures at the right bank slope. The stability analysis of slope was carried out with different numerical methods. The results indicate that the safety factor of the slope after the reinforcement meets the requirement of the control standard. At the same time，the data of in-situ monitoring indicate that the slope is stable and the scheme of reinforcing treatment is reasonable and effective. Key words：hydraulic engineering；Dagangshan hydropower station；high slope；unloading fissures；reinforcing treatment；stability analysis 正常蓄水位 1 130 m，总库容 7.42×108 m3，电站装 机容量 2 600 MW。 坝