A Construction Method for Controlling Overflow Recharge of Multilayer Aquifers and Protecting Surrounding Environment

Abstract

The invention provides a construction method for controlling multiple water-bearing strata to achieve leaking recharge and to protect the ambient environment. According to the method, the action of underground diaphragm wall water retaining and the action of ambient environment sediment reducing are fully considered, theoretical methods and numerical simulation are used for analyzing, whether an underground diaphragm wall needs to be reinforced or not through a cement stirring cross flow prevention wall is determined, furthermore, the optimal height of the cement stirring cross flow prevention wall is determined, and under the condition that the ambient environment sediment need is met, the double effects of being economical and protecting the ambient environment are achieved. According to the construction method, the height of the cement stirring cross flow prevention wall is determined before construction, construction of the cement stirring cross flow prevention wall is completed preferentially, the construction efficiency is high, the quantity of used materials is small, the cost is low, construction operation is convenient, and reliability is high.

Description

technical field [0001] The invention relates to a method in the technical field of underground building construction, in particular to a construction method for controlling overflow and recharge of multi-layer aquifers to protect the surrounding environment. Background technique [0002] The rapid development of urbanization has greatly promoted the large-scale development of urban high-rise buildings and underground spaces, and deep foundation pits and ultra-deep foundation pits are constantly emerging. The excavation depth of the terminal well at Huaihai Road Station is 35m, and the foundation pit project is gradually developing towards a larger depth and larger area. However, as the depth increases, the uncertain factors in engineering hydrogeology gradually increase, and the safety of foundation pit construction and the impact of foundation pit construction on the surrounding environment become crucial. During the foundation pit construction process, if the groundwater ...

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Problems solved by technology

However, in the grouting process of this patent, it is impossible to control to ensure that the expected sealing effect is achieved, and the grouting is done every one meter from the bottom, and the amount of grouting is too large, resulting in a great waste of resources and a decrease in construction efficiency

Therefore, this technology is only suitable for end wells with a small range of foundation pits or a small area, the applicable conditions are narrow, and a large amount of material is wasted, and the efficiency is relatively low

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