A Classification and Multi-objective Optimization Method for Determining Confined Water Control Scheme of Foundation Pit
A technology of multi-objective optimization and control scheme, applied in the field of classification and multi-objective optimization, can solve problems such as hidden safety hazards, high engineering cost, and large impact on the surrounding environment, achieving high reliability, strong applicability, and high degree of refinement Effect
Active Publication Date: 2020-10-16
宁波地铁产业工程有限公司
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Problems solved by technology
The engineering control methods of confined water in foundation pits are mainly precipitation and complete isolation. The effect of complete isolation is remarkable, but the construction is difficult and the project cost is high; the impact of precipitation on the surrounding environment is relatively large and there is a lack of accurate prediction. method, which has certain security risks
At present, although different scholars have carried out a lot of research on confined water control, most of their research results are aimed at a specific project or a specific construction method, and have not quantitatively analyzed the limiting conditions
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[0031] A classification and multi-objective optimization method for determining the control scheme of foundation pit confined water, such as figure 1 As shown, according to the type of confined water in different foundation pits, the impact of the change of confined water on the surrounding environment can be accurately evaluated, so as to balance the engineering investment, engineering safety, environment, ecology and other limiting factors, and realize the control scheme of the confined water. The assessment provides a scientific basis for the final determination of the confined water control scheme. Specifically include the following steps:
[0032] S1, collect data, conduct research, and establish a hydrogeological parameter model of the site, in which the influencing factors of the hydrogeological parameter model include: 1) shape factors, mainly including diving and confined water depth, thickness and the influence range of surrounding buildings; 2) Physical property i...
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The invention discloses a classifying and grading and multi-target optimizing method used for determining a control scheme of foundation pit confined water. The classifying and grading and multi-target optimizing method is characterized by comprising the following steps that S1, data are collected, investigate and survey are carried out, a site hydrogeological conceptual model is established; S2,the influence degree of the confined water on a foundation pit is graded; S3, the control grade of the foundation pit confined water is graded; S4, a confined water processing scheme is selected according to grading; S5, different construction methods are combined, a plurality of alternative control schemes are studied out; and S6, an optimum scheme is determined based on multi-target optimization. The classifying and grading and multi-target optimizing method has the advantages that aiming at types of confined water in the different foundation pits, the influence of changes of the confined water on the surrounding environments is precisely estimated, so that other limiting factors of project investment, project security, environment, ecology and the like are balanced, estimation of the control scheme of the confined water is realized, and scientific foundations are provided for final determination of the control scheme of the confined water.
Description
technical field [0001] The invention relates to a multi-objective optimization method, in particular to a classification and multi-objective optimization method for determining a foundation pit confined water control scheme. Background technique [0002] Urban rail transit is an important means to solve problems such as traffic congestion and land resource shortage in large and medium-sized cities. With the large-scale development of urban construction, a large number of deep foundation pit projects in urban rail transit projects have emerged, and their scale and depth are constantly increasing. , the safety risk of the foundation pit is becoming higher and higher, and the environment around the foundation pit is becoming more and more complex, and the requirements for environmental control are increasing. In areas with developed groundwater systems, especially under geological conditions that contain confined water layers, the continuous excavation of foundation pits makes ...
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IPC IPC(8): E02D19/06E02D19/18E02D33/00
CPCE02D19/06E02D19/18E02D33/00
Inventor 姚燕明周顺华景浩吴才德狄宏规杨金刚胡彪王世君杜云龙周俊宏
Owner 宁波地铁产业工程有限公司