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Core wall earth and rockfill dam based on soft rock composite dam foundation
The core wall earth and rockfill dam based on the soft rock composite dam foundation comprises the composite dam foundation and an upper dam body filled on the composite dam foundation, the composite dam foundation comprises bed rock and a lower dam body filled on the bed rock, the lower dam body is provided with a concrete anti-seepage wall, the lower portion of the concrete anti-seepage wall extends downwards into the bed rock, and the lower portion of the concrete anti-seepage wall extends downwards into the bed rock. The lower dam body further comprises a first upstream soft rock filling area and a second upstream soft rock filling area which are sequentially filled on the upstream side of the concrete diaphragm wall, and further comprises a first downstream soft rock filling area, a lower inverted filter layer and a second downstream soft rock filling area which are sequentially filled on the downstream side of the concrete diaphragm wall. And a drainage prism is arranged at the dam foot of the second downstream soft rock filling area. The lower dam body is filled with the soft rock as a filling material, the lower dam body and the bed rock are combined to form the composite dam foundation, the utilization rate of the soft rock is greatly increased, the purpose that the materials on site are used up is achieved, and the dam investment is reduced; the lower dam body is provided with the concrete anti-seepage wall, the anti-seepage effect of the lower dam body can be effectively improved, the lower inverted filter on the downstream side of the first downstream soft rock filling area can effectively prevent the first downstream soft rock filling area from being brought out due to the seepage force effect, then the concrete anti-seepage wall is prevented from inclining, and the stability of the lower dam body is improved.
本发明公开了一种基于软岩复合坝基的心墙土石坝，包括复合坝基和填筑在复合坝基上的上部坝体，复合坝基包括基岩和填筑在基岩上的下部坝体，下部坝体具有混凝土防渗墙，混凝土防渗墙的下部向下延伸至基岩内，下部坝体还包括依次填筑在混凝土防渗墙的上游侧的第一上游软岩填筑区、第二上游软岩填筑区，下部坝体还包括依次填筑在混凝土防渗墙的下游侧的第一下游软岩填筑区、下部反滤层和第二下游软岩填筑区，第二下游软岩填筑区的坝脚处具有排水棱体。本发明的下部坝体以软岩作为填筑料进行填筑，下部坝体和基岩结合形成复合坝基，大大提高了软岩的利用率，做到了现场料尽其用，降低大坝投资；本发明的下部坝体具有混凝土防渗墙，可有效提高下部坝体的防渗效果，第一下游软岩填筑区下游侧的下部反滤层可有效避免其因渗流力作用被带出，进而避免混凝土防渗墙倾斜，提高下部坝体的稳定性。
Core wall earth and rockfill dam based on soft rock composite dam foundation
The core wall earth and rockfill dam based on the soft rock composite dam foundation comprises the composite dam foundation and an upper dam body filled on the composite dam foundation, the composite dam foundation comprises bed rock and a lower dam body filled on the bed rock, the lower dam body is provided with a concrete anti-seepage wall, the lower portion of the concrete anti-seepage wall extends downwards into the bed rock, and the lower portion of the concrete anti-seepage wall extends downwards into the bed rock. The lower dam body further comprises a first upstream soft rock filling area and a second upstream soft rock filling area which are sequentially filled on the upstream side of the concrete diaphragm wall, and further comprises a first downstream soft rock filling area, a lower inverted filter layer and a second downstream soft rock filling area which are sequentially filled on the downstream side of the concrete diaphragm wall. And a drainage prism is arranged at the dam foot of the second downstream soft rock filling area. The lower dam body is filled with the soft rock as a filling material, the lower dam body and the bed rock are combined to form the composite dam foundation, the utilization rate of the soft rock is greatly increased, the purpose that the materials on site are used up is achieved, and the dam investment is reduced; the lower dam body is provided with the concrete anti-seepage wall, the anti-seepage effect of the lower dam body can be effectively improved, the lower inverted filter on the downstream side of the first downstream soft rock filling area can effectively prevent the first downstream soft rock filling area from being brought out due to the seepage force effect, then the concrete anti-seepage wall is prevented from inclining, and the stability of the lower dam body is improved.
本发明公开了一种基于软岩复合坝基的心墙土石坝，包括复合坝基和填筑在复合坝基上的上部坝体，复合坝基包括基岩和填筑在基岩上的下部坝体，下部坝体具有混凝土防渗墙，混凝土防渗墙的下部向下延伸至基岩内，下部坝体还包括依次填筑在混凝土防渗墙的上游侧的第一上游软岩填筑区、第二上游软岩填筑区，下部坝体还包括依次填筑在混凝土防渗墙的下游侧的第一下游软岩填筑区、下部反滤层和第二下游软岩填筑区，第二下游软岩填筑区的坝脚处具有排水棱体。本发明的下部坝体以软岩作为填筑料进行填筑，下部坝体和基岩结合形成复合坝基，大大提高了软岩的利用率，做到了现场料尽其用，降低大坝投资；本发明的下部坝体具有混凝土防渗墙，可有效提高下部坝体的防渗效果，第一下游软岩填筑区下游侧的下部反滤层可有效避免其因渗流力作用被带出，进而避免混凝土防渗墙倾斜，提高下部坝体的稳定性。
Core wall earth and rockfill dam based on soft rock composite dam foundation
基于软岩复合坝基的心墙土石坝
XIE ZUNDANG (author) / XU WEIWEI (author) / SONG XIUCHANG (author) / DUAN SHICHAO (author) / SONG ZHIYU (author) / REN SONGLIN (author) / WANG MEIZHAI (author) / LI YAN (author) / ZHAI YAFEI (author)
2024-05-07
Patent
Electronic Resource
Chinese
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