Rapid temporary cofferdam construction method

Abstract

The invention discloses a rapid temporary cofferdam construction method. A cofferdam is formed by sequentially connecting a plurality of cofferdam piles. The method comprises the following steps that1, the size and the depth of the bottom, embedded into silt, of the cofferdam are determined according to the fracture size and depth of the cofferdam between adjacent lake parks at a construction site, and the number and the size of the cofferdam piles are determined according to the size of the cofferdam, and according to a determined construction position of the cofferdam, and a water construction surveying and setting-out method is adopted for surveying and setting-out on the cofferdam; 2, the plurality of cofferdam piles are inserted, driven and assembled one by one along a surveying andsetting-out line in the step 1, and backfill cavities are formed between every two adjacent cofferdam piles through combination; 3, the backfill cavities are internally refilled with silt; 4, water inthe lake parks is pumped out through a water pump, and silt in the lake parks is cleared; and 5, the cofferdam is removed. The construction method is simple, the construction efficiency is high, theconstruction difficulty is small, the cost investment is small, and the cofferdam piles can be recycled and reused.

Description

technical field [0001] The invention relates to the technical field of cofferdam construction methods, in particular to a rapid temporary cofferdam construction method. Background technique [0002] Baiyangdian Lake is the largest freshwater wetland system in the North China Plain, which plays an irreplaceable role in maintaining the ecological environment in North China. However, due to the impact of waste water from township and township enterprises in Baoding City and counties in the west, the water quality has deteriorated significantly in recent years. Baiyangdian Lake has a unique topography. It is complex. There are more than 100 large and small lakes. The adjacent lakes are separated by enclosures. The fractures on the enclosures connect the lakes. The depth of silt in the lakes can reach 0.6 meters, and the water depth is 2-3 meters. It is necessary to treat the lake in blocks, so the existing sewage treatment methods and construction methods are not suitable for th...

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Problems solved by technology

[0002] Baiyangdian Lake is the largest freshwater wetland system in the North China Plain, which plays an irreplaceable role in maintaining the ecological environment in North China. However, due to the impact of waste water from township and township enterprises in Baoding City and counties in the west, the water quality has deteriorated significantly in recent years. Baiyangdian Lake has a unique topography. It is complex. There are more than 100 large and small lakes. The adjacent lakes are separated by enclosures. The fractures on the enclosures connect the lakes. The depth of silt in the lakes can reach 0.6 meters, and the water depth is 2-3 meters. It is necessary to treat the lake in blocks, so the existing sewage treatment methods and construction methods are not suitable for the sewage treatment construction of Baiyangdian Lake

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