AG  >> Vol. 5 No. 3 (June 2015)

    某水电站近坝库岸滑坡涌浪预测研究
    Surge Prediction Study of Reservoir Bank Landslide near a Hydropower Dam

  • 全文下载: PDF(1191KB) HTML   XML   PP.114-129   DOI: 10.12677/AG.2015.53015  
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作者:  

刘云鹏,李 辉:中国电建集团成都勘测设计研究院有限公司,四川 成都;
吴佳壕:四川省交通运输厅公路规划勘察设计研究院,四川 成都

关键词:
近坝库岸滑坡水库蓄水涌浪预测弯道系数法安全运行Reservoir Bank Landslide near Dam Reservoir Storage Surge Prediction Curve Coefficient Method Safe Operation

摘要:

水电站建设及建成发电运行以后,伴随着水库蓄水,往往不同程度地触发岸坡岩土体失稳,不仅影响工程建设的实施,而且对拦河大坝和周围人民群众的生命财产安全造成严重威胁。本文以某水电站近坝库区的荒田滑坡为例,分析其滑动成因和机制;在启动速度和下滑速度计算的基础上,对其滑动入水后形成的涌浪进行分析和量化计算。根据山区河道型水库的特点提出弯道系数的概念并修正潘家铮计算公式,该系数主要由大坝附近涌浪监测结果反分析获得。基于数值计算确定不同水位情况下的失稳范围,采用上述修正方法对库区一处潜在失稳区岩土体进行滑动入水后的涌浪预测,从而获得较为可靠的预测结果,为水电站的安全运行提供重要依据。

The reservoir storage, in the process of hydropower station construction or operation, often triggers a large number of reservoir bank slope instability of rock and soil mass in different degrees, which not only affect the implementation of the project construction, but also seriously threaten the river dam and surrounding people’s safety. The Huangtian landslide in a hydropower station reservoir area close to the dam was taken as an example, the sliding causes and mechanism of which were analyzed in this paper; on the basis of start-up speed and slip velocity calculation, the surge after sliding into the water was analyzed and quantified. The concept of curve coefficient that obtained from the surge monitoring results nearby the dam by inverse analysis was proposed according to the characteristics of mountainous river reservoir and used to amend the Pan Jiazheng formulas about the surge. Based on the instability scope which was determined by numerical calculation under different water conditions, the surge was forecasted by the above method when the rock and soil in a potentially unstable reservoir area can slide into the water, so as to obtain more reliable predictions and provide an important basis for the safe operation of hydropower station.

文章引用:
刘云鹏, 吴佳壕, 李辉. 某水电站近坝库岸滑坡涌浪预测研究[J]. 地球科学前沿, 2015, 5(3): 114-129. http://dx.doi.org/10.12677/AG.2015.53015

参考文献

[1] 金德镰, 王耕夫 (1988) 柘溪水库塘岩光滑坡. In: 中国岩石力学与工程学会地面岩石工程专业委员会,中国地质学会工程地质专业委员会, Eds., 中国典型滑坡, 科学出版社, 北京, 301-307.
[2] 哈秋聆, 胡维德 (1980) 水库滑坡涌浪计算. 人民黄河, 2, 30-60.
[3] 钟立勋 (1994) 意大利瓦依昂水库滑坡事件的启示. 中国地质灾害与防治学报, 2, 77-84.
[4] 吕贵芳, 薛果夫 (1987) 新滩滑坡的形成及其预测. 人民长江, 1, 17-26, 48.
[5] 徐开祥 (2003) 湖北省秭归县沙溪镇千将坪滑坡. 中国地质灾害与防治学报, 3, 142.
[6] 肖诗荣, 刘德富, 胡志宇 (2010) 三峡库区千将坪滑坡高速滑动机制研究. 岩土力学, 11, 3531-3536.
[7] 汪洋 (2005) 水库库岸滑坡速度及其涌浪灾害研究. 博士论文, 中国地质大学, 武汉.
[8] Noda, E. (1970) Water waves generated by landslides. Journal of the Waterways, Harbors and Coastal Engineering Division, 4, 835-855.
[9] 潘家铮 (1980) 建筑物的抗滑稳定和滑坡分析. 中国水利出版社, 北京.
[10] 任兴伟, 唐益群, 代云霞, 等 (2009) 滑坡初始涌浪高度计算方法的改进及其应用. 水利学报, 9, 1116-1119.
[11] 任坤杰, 韩继斌 (2011) 散体滑坡体首浪高度模型试验研究. 人民长江, 24, 39-72.
[12] 徐文杰 (2012) 基于CEL算法的滑坡涌浪研究. 工程地质学报, 3, 350-354.
[13] 缪吉伦, 陈景秋, 张永祥 (2012) 基于SPH方法的立面二维涌浪数值模拟. 中南大学学报(自然科学版), 8, 3244- 3249.
[14] 黄波林, 陈小婷, 殷跃平 (2012) 基于蒙特卡罗法的崩塌涌浪分析方法. 岩石力学与工程学报, 6, 1215-1221.
[15] 徐文杰 (2012) 滑坡涌浪影响因素研究. 工程地质学报, 4, 491-507.
[16] 中华人民共和国交通运输部 (2013) 海港水文规范(JTS 145-2-2013). 人民交通出版社, 北京.
[17] 李玉成, 滕斌 (2002) 波浪对海上建筑物的作用. 海洋出版社, 北京.