Key Techniques Of Extra-long Railway Tunnel Slope Construction

This paper makes a systematic review of the literature and data on the research status of inclined well construction technology in railway,highway and mine at home and abroad,and researches on the construction site of inclined well at home and abroad.According to the analysis and summary,the research status of inclined well construction technology is as follows: the research on single construction technology of inclined well under a single condition;Research on a key single construction technology under a variety of conditions;As the main source of research,theoretical design is separated from engineering practice.These research results are difficult to solve the technical problems encountered in inclined well construction systematically and pertinently.To sum up the status quo,this article to chengdu-chongqing railway passenger dedicated line new longquan mountain tunnel 1 #,2 # inclined shaft construction,for example,in view of the large longitudinal slope,rich in water,gas and other geological breakage,strata deviated well construction technology were studied.Through the list of analysis,expert evaluation,modulus of mathematical evaluation methods such as to determine the influence the tunnel construction safety,schedule,quality,etc of inclined slope construction key technology,namely: the ventilation and gas monitoring technology,excavation technique for smooth blasting technology,rail transportation,waterproof and drainage technology,supporting technology.The research results of each key technology are explained and evaluated in detail.Finally,combined with safety risk assessment and control of inclined well,the effectiveness of key technologies is verified.The research results provide an important reference for the design,construction and later operation management of the inclined shaft construction of similar long railway tunnel.