Construction survey supervision of metro civil engineering detailed rules and regulations
The second contract section of civil engineering construction supervision of Beijing Metro Line 8 governs two construction bid sections; The fifth bid section and the fifth bid section of the sixth bid section are a station and a single tunnel excavation section, and the sixth bid section is a station and two double tunnel shield sections; Specific engineering conditions: The fifth standard station is located at the north side of the intersection of Xisanqi East Road and Yongtaizhuang North Road. The station is arranged along Xisanqi East Road in a zigzag pattern. It is an underground two story island type open cut station, with a buried depth of 17.76m, a standard section width of 20.7m, and an expanded section width of 26.30m. The south side of the station is a shield section, the north end is a shield section on the left side, and the right line is a section constructed by excavation, shotcreting, and anchoring, The starting (ending) mileage of the station is: YDK+802.902~YDK6+037.702, with a total length of 234.8m. Qinghe Xiaoying Station Yongtaizhuang Station right section; The designed starting and ending mileage is YDK5+569.202~YDK5+803.752, and the length of the tunnel is 234.55m. The burial depth of the mining method construction section is 8m~8.5m. Lincui Road Station of the Sixth Bid is located in the southwest of the intersection of Beijing Fifth Ring Road and Lincui Road. The station is located in the green belt of the North Fifth Ring Road. To the north of the station is Lincui Bridge of the North Fifth Ring Road, to the west is the green belt, to the south is the Ninth Water Plant of Beijing Water Supply Company, and to the east is the Olympic tennis, hockey and archery venues. The station is arranged in a straight line along the south side of the auxiliary road of North Fifth Ring Road, and is an island station with three floors underground. The left and right lines at the west end of the station are equipped with shield launching wells, and the left and right lines at the east end are equipped with shield launching wells. The total length of the station is 151.5m, and the width of the standard section is 20.9m, running east-west. The buried depth of the station is 21.76m. The station is equipped with 3 channels, 4 entrances and 2 groups of 6 air kiosks. The effective platform center mileage of the station is YDK8+515.100. Yong forest area is a shield section; Left line ZCK6+036.282-8+433.65 length 2378.77m Right line YCK6+036.282-8+433.65 length 2397.386m section plane: R=500 The spacing between R=800 and R=450 double lines is 12m, and the covering soil is 7-17m thick. An intermediate air shaft is set in the south of Qinghe River and the north of Qinghe East Road. The construction design boundary mileage is Y (Z) DK7+325.20-Y (Z) DK7+338.80, and the air shaft is 82m away from Qinghe River. The air shaft is constructed by open excavation method. The main body is divided into three layers of rectangular reinforced concrete frame structure under the ground, and the excavation depth is 24.5m Lin Sen interval; The left line ZDK8+586.850-ZCK10+667.437 is 1931.55m long, and the right line YDK8+586.850-YCK10+667.437 is 1918.11m long, with R=450 and R=400 double track spacing of 12m and 17m. Set interval air shaft at Y (Z) CK9+490. The section YCK10+504.78-YCK10+667.437 (ZCK10+518.40-YCK10+667.437) is constructed by open excavation method, and the section air shaft is also constructed by open excavation method.
