Comparison And Selection Of Construction Methods For Excavation Of Long,Large And Deep Buried Tunnel

In this paper,through the analysis and research on the development trend of tunnel engineering in China,the development trend and future direction of tunnel engineering are obtained;Through the analysis and research on the development trend of tunneling excavation method in China,the development trend and future direction of tunnel excavation construction method are obtained;Focus on the selection of tunnel engineering excavation construction methods for long axis line(including special long axis line),large section,deep buried and ultra-complicated geological conditions,to compare the main excavation construction methods TBM method and drilling and blasting method,to obtain the conclusion.This paper briefly introduces the main construction methods,operation flow,basic characteristics and advantages and disadvantages of the existing tunneling excavation in China.This paper introduces the research significance,present situation,content,route,conclusion and prospect of selection of excavation construction method for tunnel engineering under the condition of long axis line(including special long axis line),large section,deep burial and super complex geological conditions.China's tunnel project in the future development of bright and broad,tunnel engineering in highway,railway,water conservancy,hydropower,inter-basin water transfer and mineral resources,subway,unde rground space and other areas will achieve greater development and achievements.China's tunnel project to the long axis line(including special long axis line),large section and deep buried trends,the construction environment is getting worse,the geological conditions will become increasingly complex and poor,the underwater tunnel engineering across the river and sea is getting more and more popular,the underground space engineering is more and more complex in the process of urban development.The development trend and direction in the future of china's tunnel engineering excavation construction methods: the drilling and blasting method is more and more high degree of mechanization,the tunnel boring machine will be used on a large scale,the drilling and blasting method auxiliary the tunnel boring machine,increase the length of single working face advancing,professional and technical of the construction operations team,application of new materials and new technologies,maintain the natural environment and create a harmonious environment,strengthen information management control,pay attention to construction technology management.This paper expatiates on the importance of comparison and selection of excavation method for tunnel engineering under the conditions of long axis line(including special long axis line),large section,deep buried and ultra-complicated geological conditions,Respectively,introduced the construction of economic research,construction progress or duration research,construction quality or engineering quality research,construction safety and comprehensive analysis of comparison and selection of theoretical m ethods.From the Jinping ? engineering practice,the use of scientific and rigorous research methods,through a large number of detailed and reliable information on the construction and basic data for systematic and innovative analysis and research,theory and practice of a useful combination,from the construction economy,construction progress or duration research,construction quality or engineering quality research,construction safety point of view,TBM method and drilling and blasting method were stud ied and compared to form a conclusion.According to the stacking effect of the conclusion of the construction of economic research,construction progress or duration research,construction quality or engineering quality research,construction safety,the conclusion is that the TBM method is superior to the drilling and blasting method for the tunnel construction excavation method under the conditions of long axis line(including special long axis line),large section,deep buried,ultra-complicated and unfavorable geological conditions.