Rotating drum type swirl curing and stirring device and dredged sludge hydraulic reclamation method

Abstract

The invention provides a rotating drum type swirl curing and stirring device which comprises a dredger, a cylindrical stirring drum and a motor, wherein a sludge storage box is arranged in the dredger, the bottom of the sludge storage box is connected with a sludge suction pipe, the end of the sludge storage box is connected with a sludge discharge pipe, the end of the sludge discharge pipe is provided with a sludge pump, and the outlet of the sludge pump is connected with a dredging pipe; a spiral sludge propeller is arranged in the cylindrical stirring drum, a bearing is arranged at the rear end of the cylindrical stirring drum, and a sludge blowing pipe is connected to the front end of the cylindrical stirring drum; the rear end of the spiral sludge propeller is in drive connection with the motor, and a feed opening is formed in the end of the sludge blowing pipe; and the upper side of the rear end of the cylindrical stirring drum is provided with a curing agent feeding pipe adjacent to the dredging pipe. The device provided by the invention is reasonable in structure, convenient to manufacture, low in manufacturing cost, convenient to disassemble and assemble, and simple in operation. A dredged sludge hydraulic reclamation method utilizing the rotating drum type swirl curing and stirring device is reasonable in step, simple in process, convenient to implement, capable of carrying out hydraulic reclamation construction while curing and stirring dredged sludge with curing agents and auxiliary materials, and capable of effectively shortening the period of the hydraulic reclamation construction.

Description

technical field [0001] The invention belongs to the technical field of construction devices and construction methods for dredging mud dredging and filling, and in particular relates to a drum-type vortex solidification stirring device and a method for dredging mud dredging and filling. Background technique [0002] At present, with the rapid economic development of coastal cities and the vigorous development of urban infrastructure, some coastal cities in China have a serious shortage of landing areas. The use of dredged silt for land reclamation has become an important means of land development in coastal cities. It can not only effectively reduce the pollution of marine environment caused by dumping mud and silt in the sea, but also has a very positive significance for alleviating the shortage of land resources in coastal cities. Significant economic and social benefits. [0003] In the process of land reclamation with dredged silt, the research on dredged silt foundation...

AI Technical Summary

Problems solved by technology

Traditional dredging silt foundation treatment methods start with solidified materials to improve the quality and effect of foundation treatment; however, when cement and other curing agents are added to silt with high water content and rich in organic matter, there is still the problem of uneven mixing. As a result, the strength of the solidified silt does not meet the design standard, and it is easy to form a "mud skin", which affects the curing efficiency and effect of the dredged fill silt, and prolongs the foundation treatment period

[0004] In order to solve the above problems, some new dredging and filling devices and construction methods have emerged as the times require, some of which simply consider dredging silt dredging and filling technology, while existing projects mostly solidify dredged silt in order to shorten the construction period, which leads to the need for re-stirring of the dredged silt Re-use will increase the project cost and prolong the construction period; some are only simple stirring devices, that is, the stirring device is separated from the blowing and filling equipment, which cannot achieve the purpose of simultaneous solidification, stirring and blowing and filling, and then cannot guarantee blowing and filling. Soil stability and long-term safety

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