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A platform for research: civil engineering, architecture and urbanism
Hydropower station workshop cofferdam structure and construction method thereof
The invention relates to a hydropower station workshop cofferdam structure and a construction method thereof, and belongs to the technical field of hydropower station construction. The cofferdam structure comprises a first-stage dry-period cofferdam built on one bank of a river channel, and a first-stage dry-period foundation pit is formed; a power plant foundation pit upstream year-round cofferdam, a power plant foundation pit downstream year-round cofferdam and a concrete longitudinal year-round cofferdam are built in the first-stage dry-stage foundation pit to form a power plant foundation pit; the concrete longitudinal year-round cofferdam is of a combined structure of a diversion bottom hole and a longitudinal guide wall, the diversion bottom hole is formed in the lower portion of the concrete longitudinal year-round cofferdam, the longitudinal guide wall is arranged on the side, close to the power plant foundation pit, above the diversion bottom hole, and the concrete longitudinal year-round cofferdam, the second-stage foundation pit dry-period upstream cofferdam and the second-stage foundation pit dry-period downstream cofferdam form a second-stage foundation pit on the other bank of the river channel. The cofferdam can meet the requirement of overflowing in a dry period, and can also be used as a power plant foundation pit longitudinal full-year cofferdam and a second-stage foundation pit longitudinal cofferdam, so that the work amount is saved; the structure is compact in arrangement, small in occupied riverbed width and beneficial to arrangement of buildings.
本申请涉及一种水电站厂房围堰结构及其施工方法，属于水电站施工技术领域，该围堰结构包括在河道一岸修筑有一期枯期围堰，形成一期枯期基坑；在一期枯期基坑内，修建有发电厂房基坑上游全年围堰、发电厂房基坑下游全年围堰和混凝土纵向全年围堰，形成发电厂房基坑；混凝土纵向全年围堰采用的是导流底孔和纵向导墙的合成结构，下方为导流底孔，导流底孔上方靠发电厂房基坑一侧为纵向导墙，混凝土纵向全年围堰与二期基坑枯期上游围堰、二期基坑枯期下游围堰在河道另一岸形成二期基坑。本申请除了能够满足枯期过流的要求，还能用作发电厂房基坑纵向全年围堰和二期基坑纵向围堰，节省了工程量；该结构布置紧凑，占用河床宽度小，有利于建筑物的布置。
Hydropower station workshop cofferdam structure and construction method thereof
The invention relates to a hydropower station workshop cofferdam structure and a construction method thereof, and belongs to the technical field of hydropower station construction. The cofferdam structure comprises a first-stage dry-period cofferdam built on one bank of a river channel, and a first-stage dry-period foundation pit is formed; a power plant foundation pit upstream year-round cofferdam, a power plant foundation pit downstream year-round cofferdam and a concrete longitudinal year-round cofferdam are built in the first-stage dry-stage foundation pit to form a power plant foundation pit; the concrete longitudinal year-round cofferdam is of a combined structure of a diversion bottom hole and a longitudinal guide wall, the diversion bottom hole is formed in the lower portion of the concrete longitudinal year-round cofferdam, the longitudinal guide wall is arranged on the side, close to the power plant foundation pit, above the diversion bottom hole, and the concrete longitudinal year-round cofferdam, the second-stage foundation pit dry-period upstream cofferdam and the second-stage foundation pit dry-period downstream cofferdam form a second-stage foundation pit on the other bank of the river channel. The cofferdam can meet the requirement of overflowing in a dry period, and can also be used as a power plant foundation pit longitudinal full-year cofferdam and a second-stage foundation pit longitudinal cofferdam, so that the work amount is saved; the structure is compact in arrangement, small in occupied riverbed width and beneficial to arrangement of buildings.
本申请涉及一种水电站厂房围堰结构及其施工方法，属于水电站施工技术领域，该围堰结构包括在河道一岸修筑有一期枯期围堰，形成一期枯期基坑；在一期枯期基坑内，修建有发电厂房基坑上游全年围堰、发电厂房基坑下游全年围堰和混凝土纵向全年围堰，形成发电厂房基坑；混凝土纵向全年围堰采用的是导流底孔和纵向导墙的合成结构，下方为导流底孔，导流底孔上方靠发电厂房基坑一侧为纵向导墙，混凝土纵向全年围堰与二期基坑枯期上游围堰、二期基坑枯期下游围堰在河道另一岸形成二期基坑。本申请除了能够满足枯期过流的要求，还能用作发电厂房基坑纵向全年围堰和二期基坑纵向围堰，节省了工程量；该结构布置紧凑，占用河床宽度小，有利于建筑物的布置。
Hydropower station workshop cofferdam structure and construction method thereof
一种水电站厂房围堰结构及其施工方法
ZHAO YUCHENG (author) / DAN KAI (author) / HUANG JIE (author)
2022-07-29
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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