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Vertical-open caisson-combined whirling well construction method suitable for complex geological conditions

A technology with complex geological conditions and construction methods, applied in the field of swirl well construction, can solve problems such as inability to meet on-site construction requirements, many construction safety hazards, and large construction excavation volume, so as to reduce impact, reduce workload, and ensure safety sexual effect

Inactive Publication Date: 2020-02-25
SHANGHAI BAOYE GRP CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The soil needs to be excavated during the construction of the swirl well. When encountering complex geology in the seaside area with layers of miscellaneous soil and muddy siltstone from the ground down, the construction period is relatively short due to the rich groundwater, and the surrounding rolling line foundation and water The foundation and equipment installation need to be constructed at the same time. Neither the forward construction method (i.e. vertical excavation) nor the reverse construction method (i.e. caisson construction) can meet the site construction requirements. The construction excavation volume is large, and construction safety risks many

Method used

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  • Vertical-open caisson-combined whirling well construction method suitable for complex geological conditions

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Embodiment 1

[0019] Geological conditions for the construction of a geovortex well: 1.1 layers of miscellaneous soil between 0 and 3.48m, 4.1 layers of argillaceous siltstone between 3.8-5.1m, 4.2 layers of argillaceous siltstone between 5.1m and 8.5m, 8.5m to 27.5m There are 4.3 layers of argillaceous siltstone between m and 4.4 layers of argillaceous siltstone below 27.5m. At the same time, because it is located in the coastal area, the groundwater is relatively abundant; the construction period is short, and the surrounding rolling line foundation, water treatment foundation and equipment installation need to be carried out at the same time Construction: Both the forward construction method (vertical excavation) and the reverse construction method (caisson construction) cannot meet the site construction requirements.

[0020] Swirl well such as figure 1 shown.

[0021] Adopt the construction method of swirl well with the combination of forward and reverse adapting to complex geological...

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Abstract

The invention relates to the field of underground structures, in particular to a vertical-open caisson-combined whirling well construction method suitable for complex geological conditions. The vertical-open caisson-combined whirling well construction method suitable for the complex geological conditions is characterized by comprising the following steps to be executed sequentially that (1) heavyexcavation is carried out, (2) secondary excavation is carried out, (3) a shaft wall is constructed in an open caisson mode, and (4) inner and outer shaft construction is carried out. According to themethod, the construction quantity is reduced, and the construction safety is ensured.

Description

technical field [0001] The invention relates to the field of underground structures, in particular to a construction method for a swirl well that combines forward and reverse directions and adapts to complex geological conditions. Background technique [0002] The swirling well is a vortex sedimentation tank, which is composed of a water inlet, a water outlet, a grit chamber, a sand collection area, a sand lift pump, a sand discharge pipe, an electric motor and a gearbox. When in use, the sewage flows into the grit chamber from the water inlet along the tangential direction, and the motor drives the turntable and the impeller to rotate. Under the centrifugal action, the relatively dense sand particles in the sewage are thrown to the pool wall and fall into the sand bucket, while the organic matter remains in the water. . Adjusting the speed of the motor can achieve the best precipitation effect. [0003] The soil needs to be excavated during the construction of the swirl w...

Claims

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Application Information

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IPC IPC(8): E04H7/02E02D17/02
CPCE02D17/02E04H7/02
Inventor 杜成林刘航孟令斌
Owner SHANGHAI BAOYE GRP CORP
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