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A platform for research: civil engineering, architecture and urbanism
Reinforcing structure of clay core wall rock-fill dam and construction method of reinforcing structure
The invention relates to a reinforcing structure of a clay core wall rock-fill dam and a construction method of the reinforcing structure. The method is suitable for water conservancy and hydropower engineering. According to the technical scheme, the reinforcing structure of the clay core wall rock-fill dam is characterized in that a row of drill holes are drilled in the clay core wall of the rock-fill dam and in the upstream and downstream of the middle of the clay core wall correspondingly, the drill holes extend downwards from the top of the rock-fill dam to a foundation concrete base, and the drill holes are filled with grouting materials; a concrete diaphragm wall is arranged in the middle of the clay core wall and between the two rows of drill holes; the two rows of drill holes are located in the positions, 1 m away from the upper stream and the lower stream, of the middle of the clay core wall correspondingly; the diameter of the drill holes ranges from 0.1 m to 0.2 m, and the distance between the drill holes in the same row ranges from 0.5 m to 1.0 m. the grouting material comprises cement and fine sandy soil, and the mass ratio of the cement to the fine sandy soil is (3: 7)-(5: 5); and the grouting material proportion is determined according to dam body leakage and core wall damage conditions, and the more serious the leakage is, the higher the fine sandy soil proportion is.
本发明涉及一种黏土心墙堆石坝的补强加固结构及其施工方法。本发明适用于水利水电工程。本发明的技术方案为一种黏土心墙堆石坝的补强加固结构，其特征在于：在该堆石坝的黏土心墙内、黏土心墙中部的上下游各钻设有一排钻孔，钻孔由堆石坝坝顶向下延伸至基础混凝土底座，钻孔内填充有灌浆材料；所述黏土心墙中部、两排所述钻孔之间设有混凝土防渗墙。两排所述钻孔分别位于黏土心墙的中部偏上游、下游各1m处。所述钻孔孔径为0.1～0.2m，同排钻孔之间的孔距0.5～1.0m。所述灌浆材料包括水泥和粉细沙土，水泥和粉细沙土的质量比为3:7～5:5；根据坝体渗漏、心墙破坏情况确定灌浆材料比例，渗漏越严重，粉细砂土比例越高。
Reinforcing structure of clay core wall rock-fill dam and construction method of reinforcing structure
The invention relates to a reinforcing structure of a clay core wall rock-fill dam and a construction method of the reinforcing structure. The method is suitable for water conservancy and hydropower engineering. According to the technical scheme, the reinforcing structure of the clay core wall rock-fill dam is characterized in that a row of drill holes are drilled in the clay core wall of the rock-fill dam and in the upstream and downstream of the middle of the clay core wall correspondingly, the drill holes extend downwards from the top of the rock-fill dam to a foundation concrete base, and the drill holes are filled with grouting materials; a concrete diaphragm wall is arranged in the middle of the clay core wall and between the two rows of drill holes; the two rows of drill holes are located in the positions, 1 m away from the upper stream and the lower stream, of the middle of the clay core wall correspondingly; the diameter of the drill holes ranges from 0.1 m to 0.2 m, and the distance between the drill holes in the same row ranges from 0.5 m to 1.0 m. the grouting material comprises cement and fine sandy soil, and the mass ratio of the cement to the fine sandy soil is (3: 7)-(5: 5); and the grouting material proportion is determined according to dam body leakage and core wall damage conditions, and the more serious the leakage is, the higher the fine sandy soil proportion is.
本发明涉及一种黏土心墙堆石坝的补强加固结构及其施工方法。本发明适用于水利水电工程。本发明的技术方案为一种黏土心墙堆石坝的补强加固结构，其特征在于：在该堆石坝的黏土心墙内、黏土心墙中部的上下游各钻设有一排钻孔，钻孔由堆石坝坝顶向下延伸至基础混凝土底座，钻孔内填充有灌浆材料；所述黏土心墙中部、两排所述钻孔之间设有混凝土防渗墙。两排所述钻孔分别位于黏土心墙的中部偏上游、下游各1m处。所述钻孔孔径为0.1～0.2m，同排钻孔之间的孔距0.5～1.0m。所述灌浆材料包括水泥和粉细沙土，水泥和粉细沙土的质量比为3:7～5:5；根据坝体渗漏、心墙破坏情况确定灌浆材料比例，渗漏越严重，粉细砂土比例越高。
Reinforcing structure of clay core wall rock-fill dam and construction method of reinforcing structure
黏土心墙堆石坝的补强加固结构及其施工方法
HUANG WEI (author) / WANG YINGJUN (author) / ZHAO LIN (author) / LEI XIANYANG (author) / DU XUEZHEN (author)
2021-12-21
Patent
Electronic Resource
Chinese
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