Open caisson non-drainage sinking construction system and construction method thereof

Abstract

The invention discloses an open caisson non-drainage sinking construction system and a construction method thereof. The open caisson non-drainage sinking construction system and the construction method aim to solve the problems that in the prior art, in the process of sinking a large open caisson under the conditions of poor soil quality and high water content, accidents that the open caisson inclines or sinks suddenly, and water and sand gushing occurs at the bottom of the caisson are prone to occurrence. The construction system comprises a submersible pump, a water gun nozzle, a hoisting connecting piece, a high-pressure water inlet pump, a water inlet pipe, a mud discharging pipe, an automobile crane, a traction rope and a submersible pump main body. The construction method comprises the following steps that the submersible pump is assembled and connected with the high-pressure water inlet pump and the mud discharging pipe correspondingly, the two water pumps are started so as to rush, dig and draw mud, the high-pressure water inlet pump is turned off, the submersible pump draws water to enable the water level in the open caisson to descend so as to realize slow sinking of the open caisson, the above process is repeated until the open caisson sinks to the designed elevation, after the open caisson is in place and stable, a coarse gravel cushion layer is arranged at the bottom, and concrete is poured through a guide pipe for bottom sealing. According to the open caisson non-drainage sinking construction system and the construction method thereof, inclination or sudden sinking in the sinking construction process of the open caisson can be effectively avoided, potential safety hazards of water and sand gushing at the bottom of the caisson also can be effectively eliminated, and sinking construction efficiency of the open caisson can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of caisson sinking, in particular to a construction system and a construction method for caisson sinking without drainage. Risk of caisson sinking construction. Background technique [0002] At present, caisson construction technology is widely used in pump rooms of water intake and sewage treatment plants in many cities in my country. The "Water Ten Measures" issued in April 2015 required all localities to speed up the construction and renovation of urban sewage treatment facilities. During the sinking of traditional caissons with poor soil quality and high water content, accidents such as caisson inclination, sudden sinking, water gushing and sand gushing at the bottom of the well often occur during the sinking of large caissons with poor soil quality and high water content. [0003] Therefore, designing a caisson undrained sinking construction system and its construction method to prevent the above-ment...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to provide a caisson undrained sinking construction system and its construction method, to solve the problem of caisson inclination often occurring in the process of sinking large caissons with poor soil quality and high water content in the prior art or sudden sinking, and water and sand gushing at the bottom of the well

Images