Baizhulun tunnel of changyichang railway project enters the tunnel smoothly

Hongwang time, Nov. 4 (reporter Jiang Xin h, correspondent Qin Youqi, zhangcang) at 9:28 a.m. on Nov. 2, the large mileage direction of the baizhulun tunnel of changyichang railway constructed by the mechanization company of China Railway fifth Bureau smoothly entered the tunnel, which is another important engineering node after the smooth entry of nananshan tunnel on Oct. 24, and the project construction has made phased progress The

baizhulun tunnel is located near Daqiao village, cuijiaqiao Town, Changde City, Hunan Province, with a total length of 675.5 meters and a maximum buried depth of about 57 meters. The surrounding rock is class IV and V. The tunnel is located at the junction of Dongting lake depression basin and South China fold belt. The overall weathering of the rock mass is strong, the cracks are developed, and the surrounding rock is prone to collapse and deformation. Affected by the tunnel fault, rock cracks and seasonal precipitation, the tunnel may have rain like water outflow, small-scale water inrush and other factors, and the overall construction risk is high Since the entry of

, changyichang railway project attaches great importance to the construction of tunnel engineering. In view of the difficulties in tunnel construction, it is necessary to fully prepare for the excavation of tunnel portal. Promote construction water and electricity access, construction technology preparation, construction material preparation and other relevant work with high quality and efficiency. Select experienced and professional construction team with sufficient materials, machinery and equipment. In strict accordance with the construction scheme, commencement report, preparation of technical disclosure to the approval procedure, laying a solid foundation for ensuring the smooth access of baizhulun tunnel.