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高水頭壩基裂隙巖體滲流穩定分析
 唐建立1,朱翠民2,史恒1,皇甫澤華3,崔保玉4
(1.河南省水利勘測有限公司,河南 鄭州 450008; 2.河南省豫東水利工程管理局,河南 開封 475000; 3.河南省前坪水庫建設管理局,河南 鄭州 450003; 4.河南宏大水利工程有限公司,河南 開封 475000)
Study on Stability of Fractured Rock Mass of High Head Dam Foundation
 TANG Jianli1, ZHU Cuimin2, SHI Heng1, HUANGFU Zehua3,CUI Baoyu4
(1.Henan Water Conservancy Survey Co., Ltd., Zhengzhou 450008, China; 2.Henan Eastern Henan Water Conservancy Engineering Administration Bureau, Kaifeng 475000, China; 3.Henan Qianping Reservoir Construction Administration Bureau, Zhengzhou 450003, China; 4. Henan Hongda Hydraulic Engineering Co., Ltd., Kaifeng 475000, China)

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人民黃河
  2019,Vol. 41(9): 123
  工程勘測設計
高水頭壩基裂隙巖體滲流穩定分析
 唐建立1,朱翠民2,史恒1,皇甫澤華3,崔保玉4
(1.河南省水利勘測有限公司,河南 鄭州 450008; 2.河南省豫東水利工程管理局,河南 開封 475000; 3.河南省前坪水庫建設管理局,河南 鄭州 450003; 4.河南宏大水利工程有限公司,河南 開封 475000))
doi:
Study on Stability of Fractured Rock Mass of High Head Dam Foundation
 TANG Jianli1, ZHU Cuimin2, SHI Heng1, HUANGFU Zehua3,CUI Baoyu4
(1.Henan Water Conservancy Survey Co., Ltd., Zhengzhou 450008, China; 2.Henan Eastern Henan Water Conservancy Engineering Administration Bureau, Kaifeng 475000, China; 3.Henan Qianping Reservoir Construction Administration Bureau, Zhengzhou 450003, China; 4. Henan Hongda Hydraulic Engineering Co., Ltd., Kaifeng 475000, China)
全文: PDF (3.34MB)
摘要: 隨著我國大壩建設高度及壩前蓄水高度的增大,水庫蓄水后壩基巖體面臨很高的外水壓力,勢必影響壩基巖體中裂隙在高水頭壓力作用下的穩定性及滲透性,這關系著整個工程的安全性。根據前坪水庫工程壩址區基巖特點,依托滲透破壞理論,通過現場鉆孔壓水試驗結果,對壩基裂隙巖體透水率在水平、垂直等維度的分布情況及曲線類型進行了分析,說明壩址區巖體存在長期滲透破壞的風險。收集施工期壩基裂隙巖體采用的入巖鋼筋混凝土防滲墻及帷幕灌漿等工程處理成果,采用數值模擬分析各介質的水力坡降、取樣進行室內試驗、施工后進行壓水試驗復核等手段,證明了工程處理措施能有效保證高水頭作用下壩基裂隙巖體的穩定,確保了運營期壩基巖體在長期滲透條件下安全穩定。
關鍵詞:
Abstract: With the increase of dam construction height and the increase of water storage height in front of dam, the dam foundation rock body faces high external water pressure after reservoir impoundment, which will inevitably affect the stability of fractures in dam foundation rock under high head pressure and permeability, which is related to the safety of the entire project. According to the characteristics of bedrock in the dam site area of Qianping Reservoir Project, relying on the theory of seepage failure, through the results of onsite drilling water test, the distribution of water permeability of dam foundation fractures in horizontal and vertical dimensions and its curve types were analyzed, indicating the risk of longterm infiltration damage in the rock mass at the dam site. The results of engineering treatments such as reinforced concrete antiseepage wall and curtain grouting used in dam foundation fractured rock mass during construction period were collected. Numerical simulation was used to analyze the hydraulic gradient of each medium, indoor sampling test and postconstruction water pressure test review. The engineering treatment measures could effectively control the stability of the dam foundation fractured rock mass under the action of high water head and ensured the safety and stability of the dam foundation rock mass under longterm penetration conditions during the operation period.
Key words: penetration damage; high hydraulic pressure; fractured rock; water pressure test; absorption rate; Qianping Reservoir
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作者簡介: 唐建立(1982—),男,河南睢縣人,高級工程師,主要從事巖土工程方面的研究工作
江苏7位数开奖历史