Risk assessment method for construction period and cost of anti-seepage and water-proof curtain body

Abstract

The invention discloses a risk assessment method for the construction period and cost of an anti-seepage and water-proof curtain body, including: 1. Site survey, according to the site survey report, the probability of encountering coral reef limestone and the coral reef limestone during drilling construction are counted Thickness distribution probability; 2. According to the geological profile of the site, calculate the fractal dimension of the bedrock surface shape, perform polynomial curve fitting, and then perform linear interpolation calculations according to the assumed spacing, and calculate the actual bedrock surface burial depth and the fitting curve. The total difference between the buried depths of the bedrock surfaces calculated by interpolation; 3. Calculate the workload change values ​​caused by the distribution of coral reef limestone, the buried depth of the bedrock surface, and the undulation of the bedrock surface, respectively, according to the total workload The range of change is to evaluate the risk level of the impact of geological conditions on the construction period and cost. Through the effective processing and analysis of the data obtained from the survey, the risk analysis of the construction period and construction cost is carried out, and corresponding countermeasures are adopted to reduce or avoid the risks of the construction period and construction cost.

Description

technical field [0001] The invention relates to the field of geotechnical engineering design and construction, in particular to a risk assessment method for the construction period and cost of an anti-seepage and water-proof curtain body. Background technique [0002] The coastal area has its unique geological features, which are mainly controlled by geological structures and geological movements. The thickness of the overlying soil layer on the bedrock surface varies greatly, the distribution of coral debris and coral reef limestone is extremely uneven, and the buried depth of the bedrock surface fluctuates greatly. The thickness distribution of the strong weathered layer on the bedrock surface is also extremely uneven. These geological conditions have brought unavoidable problems to the design and construction of the anti-seepage and water-proof curtain body for deep foundation pits. [0003] Due to the vast territory of our country, it is difficult for the national survey...

AI Technical Summary

Problems solved by technology

In this way, according to the current geotechnical engineering investigation data, it is impossible to understand the distribution of the coral reef limestone and the fluctuation of the bedrock surface in detail, and it does not meet the requirements for the preparation of the design plan and construction organization design.

[0004] For the construction of the entire anti-seepage and water-proof curtain body, the distribution of coral reef limestone and the undulation of the bedrock surface will directly cause changes in the construction workload and increase the difficulty of construction, which makes it difficult to control the construction period and cost. Legal disputes often arise between parties

At present, domestic research on this aspect is still in a blank state.

Images