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Foundation pit group engineering zoning scheme evaluation method based on environmental risk loss

A foundation pit group and foundation pit technology, applied in the direction of instruments, data processing applications, prediction, etc., can solve the problems of large randomness, difficulty in comparison and selection of zoning schemes, etc., and achieve high work efficiency, scientific evaluation methods, and analysis process simple effect

Inactive Publication Date: 2017-11-07
ZHONGCHUAN NO 9 DESIGN & RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing technology only relies on the foundation pit engineering experience of designers or experts for evaluation and judgment, and the comparison and selection of zoning schemes are difficult and random

Method used

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  • Foundation pit group engineering zoning scheme evaluation method based on environmental risk loss
  • Foundation pit group engineering zoning scheme evaluation method based on environmental risk loss
  • Foundation pit group engineering zoning scheme evaluation method based on environmental risk loss

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Embodiment 1

[0026] See attached figure 2 , the shaded area in the figure is the excavation range of this foundation pit. The foundation pit project covers an area of ​​139,000 m2, and the underground construction area is about 390,000 m2. The general excavation depth reaches 15-20m, and some areas even reach 25- 26m, the surrounding environment is complex, and it is a typical representative of super-large underground projects in the urban core area. The key issue to be considered in this project is the impact of the excavation of large-scale foundation pits on the subway station and interval tunnels in the center of the plot. Considering the excavation of foundation pits There are many possibilities for the zoning scheme of the foundation pit group that will affect the surrounding environment. This large-scale foundation pit group project has designed five kinds of zoning layout schemes for foundation pit excavation. The comprehensive loss index of each zoning scheme for the environmental...

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Abstract

The invention discloses a foundation pit group engineering zoning scheme evaluation method based on environmental risk loss. The method is characterized in that through estimating numerical values of the settlement risk loss index Sci and the unloading volume risk loss index Svi of a single foundation pit for a plurality of zoning schemes, the comprehensive loss index Si for each single foundation pit is obtained, summation is carried out on the Si to obtain the comprehensive loss index S of each zoning scheme, and the zoning scheme with the minimum S numerical value is the optimal zoning scheme which least influences the environment by foundation pit safety and control unloading. In comparison with the prior art, the evaluation method of the invention is scientific and simple, the rationality of a complex foundation pit group engineering zoning scheme is scientifically analyzed, advantages and disadvantages of each zoning scheme are compared, the optimal zoning design scheme is obtained, and a reasonable management goal is built for monitoring and dynamic management on the complex working condition of a super large volume of group pits.

Description

technical field [0001] The invention relates to the technical field of excavation of foundation pits, in particular to a method for evaluating zoning schemes of foundation pit group projects based on environmental risk loss. Background technique [0002] For single-body foundation pit engineering design, the selection of the design scheme should be determined through technical and economic comparisons based on factors such as engineering geology, hydrogeological conditions, environmental conditions, construction conditions, use requirements of the foundation pit, and scale of the foundation pit. However, for the project design of the foundation pit group with a large unloading volume, there are many environmental factors and construction conditions that need to be considered. When designing the overall zoning scheme, it is necessary to analyze the various control factors of the foundation pit from the overall plan, and deal with the countermeasures through scientific means. ...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q10/06G06Q10/10G06Q50/08
CPCG06Q10/04G06Q10/0635G06Q10/06393G06Q10/103G06Q50/08
Inventor 李昀林靖汪贵平顾开云金国龙王勇周竝袁坚任家佳黄春美王鑫
Owner ZHONGCHUAN NO 9 DESIGN & RES INST
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