Method for humidifying soil mass through water steam

A water vapor and wet soil technology, applied in soil protection, construction, infrastructure engineering, etc., can solve the problems of poor soil moisture content uniformity, improve soil moisture content uniformity, uniformly humidify soil, Enhanced driving effect

Inactive Publication Date: 2020-08-11
LANZHOU JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention solves the problem of poor uniformity of soil moisture content in the existing large-scale humidification using steam by disclosing a method for using steam to humidify the soil

Method used

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  • Method for humidifying soil mass through water steam
  • Method for humidifying soil mass through water steam
  • Method for humidifying soil mass through water steam

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Embodiment 1

[0051] Present embodiment 1 provides a kind of method utilizing steam to moisten the soil, comprising the following:

[0052] S1. Install humidification equipment

[0053] The humidification equipment is composed of three storage tanks 1, three humidification pipes 2, several air pipes 3, pressure regulating valve 4 and electric hot water steam generator 5, wherein,

[0054] The storage barrel 1 described in this embodiment is an open model steel barrel with a diameter of 200cm and a height of 100cm;

[0055]The humidifying pipe 2 described in this embodiment is made of a steel pipe with a sealed lower end. The pipe body 21 has a length of 120 cm and a diameter of 5 cm. Every 10cm in the length direction, four steam diffusion holes 22 are symmetrically arranged on the pipe wall of the pipe body 21. The diameter of the steam diffusion holes 22 is 2mm, and each steam diffusion hole is provided with a mud-repelling net 23, and the mud-resistance net 23 can be general gauze;

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Abstract

The invention discloses a method for humidifying a soil mass through water steam, and belongs to the field of geotechnical engineering construction. The method for humidifying the soil mass comprisesthe steps that humidification equipment composed of a storage barrel, a humidification pipe, an air conveying pipe, a pressure adjusting valve and a water steam generator is installed, and the humidification pipe is vertically arranged in the middle of the storage barrel and connected with the pressure adjusting valve through the air conveying pipe; the pressure adjusting valve is connected with the water steam generator through the air conveying pipe; soil sample filling is conducted; the water steam generator is started, the pressure of the pressure adjusting valve is set to be 0.02-0.10 Mpa, first-time humidification is conducted, and shutdown is conducted after 20-30 min; a soil sample base face is sealed, and damp return treatment is conducted for 10-12 h; the water steam generator isstarted, the pressure of the pressure adjusting valve is set to be 0.07-0.15 Mpa, second-time humidification is conducted, and shutdown is conducted after 6-7 h. By means of the method, large-volumesoil body humidification can be rapid, uniform and controllable, heat matter coupling diffusion migration under the actions of pressure gradient, water content gradient and temperature gradient can bemore effectively enhanced, and the advantage of good humidification uniformity is achieved.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering construction, and in particular relates to a method for humidifying soil by using water vapor. Background technique [0002] Natural loess is widely distributed in Northwest China. It has the characteristics of large thickness, low strength, low moisture content and strong collapsibility. Due to its special structure and composition, its strength decreases rapidly and its deformation increases greatly after being soaked in water. , seriously affecting the construction of structures. Therefore, in order to solve the collapsibility problem of loess and improve the bearing capacity and deformation resistance of the foundation, it is necessary to do foundation treatment before the construction of the structure. Existing foundation treatment methods include dynamic compaction, soil replacement, compaction piles and soil humidification. The first three are suitable for foundations with thinner ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/10
CPCE02D3/10
Inventor 李建东张延杰王旭蒋代军刘德仁韩高孝杨成牛亚强何菲王兴为周亚龙
Owner LANZHOU JIAOTONG UNIV
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