对三峡库区碎石土滑坡高频率的地下水浸润线监测结果进行分析，表明库区碎石土滑坡地下水浸润线的监测误差通常是因监测频率过小引起的。库区滑坡地下水浸润线的合理监测频率可以通过误差分析得到，以3个滑坡的高频率地下水浸润线监测结果为基础，利用设计出的“模拟监测试验”研究了不同监测频率下三峡库区碎石土滑坡地下水浸润线的监测误差。结果表明:随着监测频率的不断减小，浸润线监测误差会逐渐达到不可接受的程度，若以平均误差0.15 m、最大误差1.5 m作为监测值的容许误差，则三峡库区碎石土滑坡地下水浸润线的监测周期不得大于4 d，监测频率不得小于0.25次/d。
Abstract
The high-frequency monitoring results of groundwater seepage line of the debris landslide in Three Gorges reservoir show that monitoring error is usually caused by low frequency. The reasonable frequency of monitoring can be obtained through error analysis. According to the results of high frequency monitoring on the groundwater seepage line of three landslides,we designed a “simulation monitoring test” to research the errors of monitored groundwater seepage line in the presence of different monitoring frequencies. Results showed that as monitoring frequency continuously decreases,the error of monitored seepage line gradually reaches an unacceptable level. For debris landslide in Three Gorges reservoir area,with average error of 0.15m and maximum error of 1.5m as tolerance value,the monitoring cycle should be no greater than 4 days,and the monitoring frequency should be no less than 0.25 times per day.
关键词
库区滑坡 /
地下水浸润线 /
监测频率 /
误差
Key words
reservoir landslide /
groundwater seepage line /
monitoring frequency /
error
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参考文献
[1] 崔政权,李 宁.边坡工程-理论与实践最新发展[M]. 北京:中国水利水电出版社,2005.(CUI Zheng-quan,LI Ning. Slope Engineering: Recent Development in Theory and Practice[M]. Beijing: China Water Power Press,2005. (in Chinese))
[2] 胡 庆,李 漪,李 恒,等.库水波动下库岸边坡地下水浸润线解析解及其误差研究[J].长江科学院院报,2013,30(3):44-48.(HU Qing,LI Yi,LI Heng,et al. Analytic Solutions and Their Errors of Groundwater Phreatic Line in Bank Slope under Reservoir Water Level Fluctuation[J]. Journal of Yangtze River Scientific Research Institute,2013,30(3):44-48.(in Chinese))
[3] 周仰效,李文鹏.区域地下水位监测网优化设计方法[J].水文地质工程地质,2007,(1):1-9.(ZHOU Yang-xiao,LI Wen-peng. Design of Regional Groundwater Level Monitoring Networks[J]. Hydrogeology and Engineering Geology,2007,(1):1-9.(in Chinese))
[4] 董殿伟,林 沛,晏 婴,等.北京平原地下水水位监测网优化.[J].水文地质工程地质,2007,(1):10-19.(DONG Dian-wei,LIN Pei,YAN Yin,et al. Optimum Design of Groundwater Level Monitoring Network of Beijing Plain[J]. Hydrogeology and Engineering Geology,2007,(1):10-19.(in Chinese))
[5] 王庆兵,段秀铭, 高赞东,等.济南岩溶泉域地下水位监测[J].水文地质工程地质,2007,(2):1-8.(WANG Qing-bing,DUAN Xiu-ming,GAO Zan-dong,et al. Regional Groundwater Level Monitoring in Jinan Karstic Spring Basin[J]. Hydrogeology and Engineering Geology,2007,(2):1-8.(in Chinese))
[6] 朱 瑾,霍传英,姜 越,等.乌鲁木齐河流域地下水水位监测网设计[J].水文地质工程地质,2007,(2):8-14.(ZHU Jin,HUO Chuan-ying,JIANG Yue,et al. Monitoring of Regional Groundwater Level in Urumqi River Basin[J]. Hydrogeology and Engineering Geology,2007,(2):8-14.(in Chinese))
[7] MANDELBROT B. The Fractal Geometry of Nature[M]. New York: Freeman,1982:13-16.
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