Complex Formation Under The Conditions Of Transport Coridors Key Construction Techniques And Surface Analysis Of The Environment

Water-rich sand and gravel are widely distributed in China, which is a common underground engineering complex formation. Human's development of underground resources and space for the 21st century is the main period, how to improve performance of the water-rich sand and gravel is not only a pressing and important issue, but also the concerns of engineers. In particular, the impact on water-rich sand and gravel in the water, it is often the key to the success of underground construction, in order to meet the construction without water, precipitation is often the preferred auxiliary engineering construction methods. But with the improvement of people's environmental awareness,they have begun to realize that supporting the construction of precipitation will lead to a greater negative impact on the environment, such as the large surface area of settlement, buildings and roads such as cracking due to uneven subsidence. Therefore, in the construction process, how to ensure the smooth progress of the underground water-rich gravel layer and reduce the environmental impact on the surface has become the main content of this research project.Overview paper, on the basis of auxiliary construction technology in water-rich Sand and Gravel underground works, focus on technology of grouting and technique of freezing. Papers with Gujiao Tunlan Slope Construction and the surrounding environment, compares and selects construction schemes of conducting and controlling groundwater, and eventually decided to adopt a comprehensive consideration of ways to improve performance the of grouting water-rich sand and gravel, in order to ensure Slope Construction carried out smoothly. In this paper, grouting theoretical formula is dropped, combined with the ancient cross-inclined projects, carried out grouting experimental study, revealed the movement of slurry process. Test results show that the performance of sand after grouting has been very good improvement, which in the study of slurry in the strata in the law of motion has important theoretical significance. In addition, in this paper three-dimensional finite element numerical simulation is used to guide the construction, and inclined shaft excavation carried out three-dimensional elastic-plastic numerical simulation, Proposing formation of the pre-consolidation and pre-processing program, a streamlined construction process and construction methods, construction site management system, monitoring Measuring and monitoring benchmarks, in order to guide the design and construction of Incline, which is great significance to predict the effect of grouting, and to guide the site of grouting.Thesis results in water-rich sand and gravel in the ancient cross-inclined engineering practice has been successfully used, and has ensured the smooth conduct of the project and the environmental impact on the surface in a controlled range. In short, the engineering applications and in-situ monitoring data showed that the grouting Sand and Gravel is an extremely effective method, providing reference for the underground construction projects in similar conditions, and has a greater role in the promotion on grouting technology at the water-rich sand and gravel and application of underground constructionFigure [117] table[14] reference[82]...