Study On Disaster Treating Of Railway Tunnel In Yang'an Line

Yang'an line is from the western YangPinGuan Station of BaoCheng railway to the eastern AnKang Station which is the intersection of XiangYu railway and XiKang railway, and runs through the southern areas of ShanXi province. It's a single main electric line which grade is I .Its design was completed in 1965 again which elementary design had been accomplished in the end of 1950's and was started in 196.The line was open to traffic in 1972 and was taken to use in 1976.Yang'an line was the second electric railway in our country and the first one-off constructed electric railway also. Yang'an line was the second main transmeridional railway which was parallel to LongHai railway. It intercommunicates with the south and west areas, the southern areas of ShanXi and the northern and western areas of our country along with XiangYu railway, BaoCheng railway and XiKang railway together, and it is important to the development and exploitation of the western and northern areas of SiChuan province and the southern areas of ShanXi province.There are 147 tunnels in all in Yang'an line, its total length is 60807 meters, and the tunnels cover 17.3 percent. There are 115 short tunnels and the middling long tunnels are 31, among which there is a long tunnel which length is 3625.44 meters and it locates at K259+566.Observation and research to the tunnel disaster in Yang'an line had been done completely by the author, and analysis to the development, change, characteristic and cause of the tunnel disaster had been done detailedly. The assessment of destroyed grade had been completed also .Treatment schemes have been brought through which aims at different disaster. Discussion and statement on different schemes have been mentioned in the paper, and the detailed discussion have been done to the two kinds of common disaster which are lining crack and leakage.Different treatment schemes aiming at vary kinds of lining crack have been stated in the paper separately, and particular discussion has been mentioned to spray concrete and reinforced anchor which are in common use now especially.The detailed compare to different kinds of spray concrete and reinforced anchor has been discussed in the paper meanwhile, and the limited statement to different construction technique of spray concrete and reinforced anchor has been presented also.Different treatment schemes aiming at vary kinds of leakage have been stated in the paper separately, and detailed dissertation has been mentioned to grouting and waterproof layer which are in common use nowadays especially. The detailed compare to different construction technique of grouting and waterproof layer has been discussed in the paper also, and the limited discussion to different new types of grouting materials and construction technique of waterproof layer has been mentioned in the paper at the same time.