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Suspension type waterproof curtain deep foundation pit dewatering scheme simulation optimization method

A water-stop curtain and optimization method technology, applied in design optimization/simulation, special data processing applications, instruments, etc., can solve problems such as inability to simulate precipitation schemes, achieve the effect of improving calculation speed and stability, and reliable calculation basis

Pending Publication Date: 2021-10-22
江苏南京地质工程勘察院 +1
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Problems solved by technology

However, it can only calculate the depth of the suspended water-stop curtain inserted into the precipitation aquifer, and cannot simulate the complete precipitation scheme

Method used

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  • Suspension type waterproof curtain deep foundation pit dewatering scheme simulation optimization method
  • Suspension type waterproof curtain deep foundation pit dewatering scheme simulation optimization method
  • Suspension type waterproof curtain deep foundation pit dewatering scheme simulation optimization method

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Embodiment Construction

[0070] This application proposes a method for simulating and optimizing the dewatering scheme of a suspended water-stop curtain for deep foundation pits, including the following steps:

[0071] S1. According to the geological and hydrogeological characteristics of the study domain and the hydraulic connection between the aquifers, establish a conceptual model of the deep foundation pit precipitation hydrogeology.

[0072] S2. According to the hydrogeological conceptual model, take the orientation of the coordinates X, Y and Z axes to be consistent with the main direction of the anisotropy of the aquifer medium, establish a three-dimensional unsteady seepage mathematical model and a land subsidence mathematical model of the compression of the aquifer soil, The three-dimensional unsteady seepage mathematical model is coupled with the land subsidence mathematical model, and is developed and solved through the finite element program, which is used to completely simulate the dynamic...

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Abstract

The invention provides a suspension type waterproof curtain deep foundation pit dewatering scheme simulation optimization method, and the method comprises the following steps: S1, establishing a deep foundation pit dewatering hydrogeological conceptual model according to geological and hydrogeological characteristics of a research domain and hydraulic connection between aquifers; S2, according to the hydrogeological conceptual model, establishing a three-dimensional unstable seepage mathematical model and a land subsidence mathematical model of the water-bearing layer soil compression amount, coupling the three-dimensional unstable seepage mathematical model and the land subsidence mathematical model, and developing and solving through a finite element program; S3, carrying out parameter inversion through water pumping test data, and obtaining an optimized three-dimensional coupling numerical model of unstable seepage and land subsidence; S4, carrying out deep foundation pit dewatering and ground subsidence simulation calculation of different combination depths of the suspension type waterproof curtain and the dewatering well filter, and obtaining the optimal deep foundation pit efficient dewatering technical scheme. The coupling model constructed by the method meets certain precision and confidence, and the calculation speed and stability of the model are improved.

Description

technical field [0001] The invention belongs to the technical field of underground engineering foundation pit dewatering, and in particular relates to a method for simulating and optimizing a deep foundation pit dewatering scheme with a suspended water-stop curtain. Background technique [0002] With the continuous three-dimensional development of urban buildings, the depth of underground excavation continues to deepen, and the bottom of the foundation pit is getting closer and closer to the roof of the aquifer. During the construction of deep foundation pit engineering, it is more and more important to understand the distribution and permeability analysis of the underground aquifer, so the foundation pit dewatering is generally carried out before construction. Because the dewatering of deep foundation pits will destroy the original water-soil stress balance and cause serious waste of groundwater resources, closed water-stop curtains are widely used in the dewatering of deep...

Claims

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Application Information

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IPC IPC(8): G06F30/23G06F30/28G06F113/08G06F119/14
CPCG06F30/23G06F30/28G06F2113/08G06F2119/14
Inventor 徐成华骆祖江于丹丹成磊张也张兴旺顾问周玲玲
Owner 江苏南京地质工程勘察院
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