Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Special cushion layer area of concrete face rockfill dam and construction method
The invention discloses a special cushion layer area of a concrete face rockfill dam and a construction method, and belongs to the technical field of concrete face rockfill dams. A special cushion layer area of a concrete face rock-fill dam comprises a special cushion layer material, the special cushion layer material forms the special cushion layer area between the rear portion of a toe board and the cushion layer area on the downstream side of a face plate peripheral seam, and the special cushion layer material plays a reverse filtering role in joint plugging materials of the peripheral seam and a nearby concrete face. And the special cushion material is an inverted filter material which has the maximum particle size of not more than 40mm, is continuous in gradation and has a self-healing effect on seam top fly ash, silty-fine sand and seam plugging slurry, and 4-6% of a cement cementing material. According to the invention, a cementitious body is formed by the granular mixture, so that the integrity and strength of the special cushion material are improved, the permeation resistance and displacement deformation resistance are enhanced, and the supporting force of the bottom concrete panel is improved; the problem of dam water leakage caused by peripheral seam waterstop tearing is solved.
本发明公开了一种混凝土面板堆石坝的特殊垫层区及施工方法，属于混凝土面板堆石坝技术领域。一种混凝土面板堆石坝的特殊垫层区，包括特殊垫层料，所述特殊垫层料在趾板后及面板周边缝下游侧垫层区之间形成特殊垫层区，所述特殊垫层料对周边缝及附近混凝土面板的堵缝材料起反滤作用；所述特殊垫层料为最大粒径不超过40mm、级配连续，对缝顶粉煤灰、粉细砂、堵缝泥浆有自愈作用的反滤料，以及4%‑6%的水泥胶凝材料。本发明，由散粒体形成胶结体，提高特殊垫层料的整体性与强度，增强抗渗透、位移变形能力，提高底部混凝土面板的支撑力；用以解决“周边缝止水撕裂造成大坝漏水”的问题。
Special cushion layer area of concrete face rockfill dam and construction method
The invention discloses a special cushion layer area of a concrete face rockfill dam and a construction method, and belongs to the technical field of concrete face rockfill dams. A special cushion layer area of a concrete face rock-fill dam comprises a special cushion layer material, the special cushion layer material forms the special cushion layer area between the rear portion of a toe board and the cushion layer area on the downstream side of a face plate peripheral seam, and the special cushion layer material plays a reverse filtering role in joint plugging materials of the peripheral seam and a nearby concrete face. And the special cushion material is an inverted filter material which has the maximum particle size of not more than 40mm, is continuous in gradation and has a self-healing effect on seam top fly ash, silty-fine sand and seam plugging slurry, and 4-6% of a cement cementing material. According to the invention, a cementitious body is formed by the granular mixture, so that the integrity and strength of the special cushion material are improved, the permeation resistance and displacement deformation resistance are enhanced, and the supporting force of the bottom concrete panel is improved; the problem of dam water leakage caused by peripheral seam waterstop tearing is solved.
本发明公开了一种混凝土面板堆石坝的特殊垫层区及施工方法，属于混凝土面板堆石坝技术领域。一种混凝土面板堆石坝的特殊垫层区，包括特殊垫层料，所述特殊垫层料在趾板后及面板周边缝下游侧垫层区之间形成特殊垫层区，所述特殊垫层料对周边缝及附近混凝土面板的堵缝材料起反滤作用；所述特殊垫层料为最大粒径不超过40mm、级配连续，对缝顶粉煤灰、粉细砂、堵缝泥浆有自愈作用的反滤料，以及4%‑6%的水泥胶凝材料。本发明，由散粒体形成胶结体，提高特殊垫层料的整体性与强度，增强抗渗透、位移变形能力，提高底部混凝土面板的支撑力；用以解决“周边缝止水撕裂造成大坝漏水”的问题。
Special cushion layer area of concrete face rockfill dam and construction method
一种混凝土面板堆石坝的特殊垫层区及施工方法
24.06.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
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