Research on Key Technologies for Construction of High Gas Water Diversion Tunnels in the Red-bed Area
Taking Jinjiliang tunnel of the third bid of Tingzikou Irrigation Area Phase Ⅰ Project as an example,aiming at the safety problem of high gas construction of diversion tunnel in red-bed area,combined with the characteristics of silty mudstone in red-bed area,the corresponding measures adopted in the construction process are analyzed.The results show that the gas release and prediction are carried out by advanced geolog-ical drilling.A the combination of manual detection and automatic monitoring is used to strengthen gas moni-toring;configuration is carried out in accordance with the requirements of"one standby and one ready"to en-hance ventilation in the tunnels;the mechanical equipment is equipped with a vehicle-mounted gas automatic monitoring alarm and power-off system and an exhaust spark extinguisher,and the tunnel power consumption is transformed into"three specialties"and"two locking";it can always grasp the change of gas concentration in the tunnel,eliminate hidden dangers,ensure the safety of tunnel construction,and provide reference for similar projects.
Water conservancy projectRed-bed areaDiversion tunnelHigh gasConstruction technologyGas prevention and controlJinjiliang Tunnel
国家科技期刊平台
NSTL
万方数据
维普
