摘要：深基坑施工风险分析与防控是一个相对复杂的研究过程，也是目前工程界的一大热 点。对上海地区某地下工程深基坑施工实例进行定性分析，建立某地下工程深基坑施工风 险的指标体系，利用层次分析法计算出其风险影响因素的权重值。再利用 BP 神经网络模 型对某地下工程深基坑施工风险进行分析和预测。其次，把可拓学理论运用到某地下工程 深基坑施工风险评价中。通过对风险的定量计算，确定某地下工程深基坑施工风险水平， 并对风险的重要性进行了排序处理。最后阐述了某地下工程深基坑施工过程相关风险的应 对措施，为了降低地下工程深基坑的施工风险，预防和减少深基坑工程事故的发生，针对 重要风险提出了相关的防控对策。66325

毕业论文关键词： 深基坑工程；层次分析法；BP 神经网络；可拓学理论

Risk Analysis and Prevention Countermeasure of Deep Foundation Pit Construction in Underground Engineering

Abstract: Deep foundation pit construction risk analysis and prevention and control is a relatively complex research process, is also a hot topic of the current engineering sector. This paper analyzes the construction example of deep foundation pit in an underground engineering in Shanghai, establishes the index system of deep foundation pit construction risk of underground engineering, and uses the analytic hierarchy process to calculate the weight value of its risk influence factor. And then use BP neural network model to analyze and forecast the construction risk of deep foundation pit of underground engineering. Secondly, the extension theory is applied to the risk assessment of deep foundation pit construction of underground engineering. Through the quantitative calculation of risk, the risk level of deep foundation pit construction of a underground project is determined, and the importance of risk is sorted. In order to reduce the construction risk of deep foundation pit in underground engineering, prevent and reduce the occurrence of deep foundation pit engineering accidents, and put forward relevant prevention and control measures for the important risks.

Key Words: deep foundation pit engineering; analytic hierarchy process; BP neural network; extension theory.

目 录

1 绪论 1

1.1 选题背景和意义 1

1.1.1 选题依据及背景 1

1.1.2 研究目的及意义 1

1.2 文献综述 2

1.2.1 国内深基坑工程风险分析与防控对策研究现状 2

1.2.2 国外深基坑工程风险分析与防控对策研究现状 4

2 某地下工程深基坑施工风险定性分析 6

2.1 工程概况 6

2.2 水文地质条件影响分析 6

2.2.1 水文地质条件对深基坑围护变形的影响 6

2.2.2 地下水对深基坑施工的影响 6

2.3 空间几何条件影响分析 6