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Anti-blocking rapid vacuum preloading and solidifying method for flow-state mud with straw as drainage bodies

A fluid mud and drainage technology, applied in soil protection, infrastructure engineering, construction, etc., can solve problems such as silting without consideration, reduce environmental damage, shorten the construction period, and shorten the cycle of recovery and utilization Effect

Inactive Publication Date: 2015-11-04
JIANGSU HONGJI GEOTECHNICAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

This method only proposes to use straw drainage body to replace the sand cushion and plastic drainage board in the traditional vacuum consolidation method, and does not consider the problem of silting

Method used

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Embodiment Construction

[0034] The above solution will be further described below in conjunction with specific embodiments. It should be understood that these examples are used to illustrate the present invention and not to limit the scope of the present invention. The implementation conditions adopted in the examples can be further adjusted according to the conditions of the specific construction unit, and the unspecified implementation conditions are usually the conditions in routine experiments.

[0035] The rapid vacuum preloading and consolidation method for fluid mud with straw as the drainage body provided in this embodiment includes the following steps:

[0036]Step 1, prefabricating the straw into a columnar straw bundle.

[0037] In this step one, the method that straw is prefabricated into columnar straw bundle has following two kinds:

[0038] The first method is to crush the straw and put it into a strip mesh bag and compact it so that the density of the straw is 60-150kg / m 3 The leng...

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Abstract

The invention discloses an anti-blocking rapid vacuum preloading and solidifying method for flow-state mud with straw as drainage bodies. According to the method, straw bales are inserted into the flow-state mud to form the multiple vertical straw drainage bodies, a straw weaving carpet is arranged on the surface of the flow-state mud in a paved manner, and the straw weaving carpet is connected with the vertical straw drainage bodies in an overlapped manner; pipelines are arranged on the surface of the straw weaving carpet in a paved manner to form a drainage pipe network, a vacuum pump is connected with one end of the drainage pipe network, and the other end of the drainage pipe network is provided with a ventilation valve; the vacuum pump is opened, the ventilation valve is adjusted to control the vacuum degree in a sealing membrane, loading-type cyclic loading is adopted, it is guaranteed that pre-set vacuum negative pressure is loaded in the sealing membrane, the flow-state mud is solidified rapidly, and drainage is carried out. The condition that the drainage bodies are blocked by the flow-state mud can be avoided, the agriculture straw can be fully utilized, and environment pollution caused when the agriculture straw is wasted is avoided.

Description

technical field [0001] The invention relates to a rapid vacuum preloading consolidation method for preventing silting when vacuum consolidation treats liquid mud such as high blow-fill sludge and municipal sludge, and belongs to the technical fields of water conservancy engineering, reclamation engineering, municipal engineering, and environmental governance engineering. . Background technique [0002] A large amount of dredged silt is required to be dredged and filled in land reclamation and tidal flat development projects in coastal areas. However, due to dredging by hydraulic methods such as cutter suction, the dredged silt has high moisture content, high clay content, and high strength. Low, poor drainage performance and other characteristics, under natural air-dried and consolidated conditions, it generally takes several years to use the dredged silt foundation. [0003] In addition, in recent years, the number of sewage treatment plants in my country has increased dra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/10
Inventor 徐桂中于小娟邱成春殷勇
Owner JIANGSU HONGJI GEOTECHNICAL ENG CO LTD
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