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A platform for research: civil engineering, architecture and urbanism
High-water-level foundation pit dewatering construction method
The invention relates to a high-water-level foundation pit dewatering construction method. The method comprises the following steps that a catchpit is downwards dug in the middle of a foundation pit, water filtering pipes are arranged in the catchpit, a water suction pump is arranged at the bottom of the catchpit, and a casing pipe is arranged at the water outlet end of the water suction pump and extends out of the catchpit; the parts between the water suction pump and the water filtering pipes are filled with graded broken stones, and backfilling of graded sand and stones is carried out on the bottom of the foundation pit to form a gravel layer; the part above the gravel layer is paved with a plastic layer; a concrete cushion layer is poured to the part above the plastic layer; a waterproof layer is made for the foundation pit; concrete is poured on the waterproof layer to form a waterproof protection layer; and a foundation pit raft foundation is bundled, concrete is poured, power supply to the water suction pump is stopped, and the top of the casing pipe is immediately blocked through a plug. The water filtering pipes are arranged in the catchpit, residues in the catchpit can be reduced, the service life of the water suction pump is prolonged, and meanwhile by means of the gravel layer, it can be guaranteed that underground water flows into an area defined by the water filtering pipes from gaps among the stones. The plastic layer is laid on the part above the gravel layer, and damage to a concrete layer due to water seepage of the gravel layer is prevented.
High-water-level foundation pit dewatering construction method
The invention relates to a high-water-level foundation pit dewatering construction method. The method comprises the following steps that a catchpit is downwards dug in the middle of a foundation pit, water filtering pipes are arranged in the catchpit, a water suction pump is arranged at the bottom of the catchpit, and a casing pipe is arranged at the water outlet end of the water suction pump and extends out of the catchpit; the parts between the water suction pump and the water filtering pipes are filled with graded broken stones, and backfilling of graded sand and stones is carried out on the bottom of the foundation pit to form a gravel layer; the part above the gravel layer is paved with a plastic layer; a concrete cushion layer is poured to the part above the plastic layer; a waterproof layer is made for the foundation pit; concrete is poured on the waterproof layer to form a waterproof protection layer; and a foundation pit raft foundation is bundled, concrete is poured, power supply to the water suction pump is stopped, and the top of the casing pipe is immediately blocked through a plug. The water filtering pipes are arranged in the catchpit, residues in the catchpit can be reduced, the service life of the water suction pump is prolonged, and meanwhile by means of the gravel layer, it can be guaranteed that underground water flows into an area defined by the water filtering pipes from gaps among the stones. The plastic layer is laid on the part above the gravel layer, and damage to a concrete layer due to water seepage of the gravel layer is prevented.
High-water-level foundation pit dewatering construction method
YANG YU (author) / CHENG MING (author)
2016-02-24
Patent
Electronic Resource
English
IPC:
E02D
FOUNDATIONS
,
Gründungen
Dewatering construction method for confined water depth foundation pit
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