Risk Control and Countermeasures for Railway Safety in High Stress Areas
Research purposes:To identify the hazard factors of railway construction and reduce the construction risks in high stress area in Xining-Chengdu railway,the hazard factors and possible consequences of railway construction in high stress areas are analyzed by engineering analogy,and scheme comparison is conducted.Research conclusions:(1)In the research stage of railway engineering schemes,in addition to considering geological,environmental,engineering countermeasures,and investment factors,risk control should be included in the scheme comparison,and potential risk factors should be avoided as much as possible.In the selection of high stress areas,open line engineering should be given priority(roadbeds and bridges,etc).When tunnel engineering passes through,it is advisable to choose intrusion rock with good rock mass for shallow and short tunnel passage,and reasonable risk response measures should be set up.(2)During the construction stage,risk assessment and dynamic adjustment measures should be strengthened.(3)The construction of soft rock tunnels in high stress should establish a management system with deformation rate and displacement as dual control indicators.(4)Mechanized supporting construction should be given priority to tunnels in high stress,and personnel inside the tunnel should stay away from the working face to reduce the risk of casualties.(5)The research results can provide reference for the selection of railway tunnel routes in high stress areas.
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