Cement-bentonite vertical antifouling separating wall structure and method

A technology of bentonite and partition wall, which is applied in the direction of infrastructure engineering, sheet pile wall, protection device, etc., can solve the problems affecting the integrity of vertical anti-fouling partition wall and long-term service performance, impermeability, adsorption properties are inferior, It is difficult to achieve problems such as underground pollution prevention and control, and achieve the effects of strong deformation resistance, high shear strength and small working surface.

Pending Publication Date: 2018-02-23
ZHEJIANG UNIV
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Problems solved by technology

Under the same conditions, the soil-bentonite prepared with calcium-based bentonite or modified calcium-based bentonite is not as good as the soil-bentonite prepared with natural sodium-based bentonite in terms of anti-seepage and adsorption properties, and it is difficult to achieve underground pollution prevention. control technical requirements
[0004] The construction process of vertical antifouling separation walls such as soil-bentonite and plastic concrete is mainly composed of two main steps: "excavation

Method used

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  • Cement-bentonite vertical antifouling separating wall structure and method
  • Cement-bentonite vertical antifouling separating wall structure and method
  • Cement-bentonite vertical antifouling separating wall structure and method

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experiment example 1

[0053] The cement-bentonite of this experimental example is specifically the use of C42.5 ordinary Portland cement (produced by Hangzhou Qianchao Cement Co., Ltd.), a certain bentonite in Shandong and finely ground blast furnace slag (produced by Yuanheng Water Purification Material Factory in Gongyi City) and tap water. formulated. Among them, the sum of the mass of ground granular blast furnace slag and cement is 20% of the total mass of cement-bentonite, and the mass of ground granular blast furnace slag is 0%, 40%, 70%, or 0% of the sum of the mass of ground granular blast furnace slag and cement 80% and 90%; the mass of bentonite mud is 80% of the total mass of cement-bentonite, and the mass of bentonite is 5% of the mass of bentonite mud. After the cement-bentonite sample was prepared, it was cured in a water bath at a temperature of 20° for 28 days, then consolidated under a pressure of 100kPa, and then tested for the permeability coefficient under the condition of a hy...

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Abstract

The invention discloses a cement-bentonite vertical antifouling separating wall structure and a method. The cement-bentonite vertical antifouling separating wall structure comprises a cement-bentonitewall and material proportioning thereof, guide walls arranged on the two sides of the ground surface of the cement-bentonite wall and overlying structures on the top faces of the cement-bentonite wall and the guide walls and surrounding ground. The cement-bentonite wall penetrates to a relatively waterproof soil layer through a high-permeability rock soil layer from the ground surface, and a stable upstream water level face and a downstream water level face are formed on the high-permeability rock soil layer. The wall material has the beneficial effects of being high in water content, low inpermeability, high in deformation resistance, high in shear strength and the like. By means of the one-step construction method of excavating groove protection walls and directly forming the wall material from bentonite mud through hydrating and hardening, the method is simple, the working face is small, and the construction process of the vertical antifouling separating wall is simplified. The formed separating wall is used for concentrating pollution source underground water transfusion adjustment and control and pollutant diffusion prevention and control, and is especially suitable for theworking condition that overlying pressure or foundation lateral pressure is large.

Description

technical field [0001] The invention relates to methods for controlling groundwater seepage and preventing and controlling groundwater and soil environmental pollution, and in particular to a cement-bentonite vertical anti-pollution separation wall structure and method. Background technique [0002] my country's rapid economic development has also caused serious groundwater and soil pollution. Urban solid waste and other waste centralized disposal sites (especially tens of thousands of simple urban solid waste landfills or storage yards that do not meet the standards) generally have the problem of underground pollution. The heavy metals and The content of organic pollutants significantly exceeded the standard. The vertical anti-pollution separation wall is the main technical means to effectively control the above-mentioned pollution sources from polluting the surrounding underground environment. [0003] Different from the high-quality natural sodium-based bentonite produc...

Claims

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Application Information

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IPC IPC(8): E02D5/18E02D31/00
CPCE02D5/187E02D31/00E02D2300/0018E02D2300/0043
Inventor 李育超黄根清杨佳林于泽溪陈冠年
Owner ZHEJIANG UNIV
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