EIA approval is an important precursor to the approval of the preliminary design of the project, the preliminary design of the project is about to enter the approval stage, the three projects are expected to start construction in 2022. Zhangjiakou City, Hebei Province, Inner Mongolia Autonomous Region Xilingol League
3, construction unit:National Railway Group (Beijing-Zhangzhou Intercity Railway Co., Ltd., Inner Mongolia Jitong Railway (Group) Limited Liability Co.
4, the environmental impact of the Evaluation unit:China Railway Engineering Design and Consulting Group Co.
5, Project Overview:The project includes the main line and related works. The main line from the Taizicheng station (not included), access to Xilinhot station, the line length of kilometers. Among them, the main line from Taizicheng to Chongli section of the environmental impact assessment documents have been approved, the evaluation of the scope of the main line kilometers long.
By the main line of national railway class I electrified railroad standard construction, Chongli to the black city section of the new single-line passenger, design speed 160 km / h; black city to the blue flag section of the single-line passenger, the blue flag to the Xilinhot section of the passenger and freight **** line, are electrified transformation of existing railroads, the design speed of 120 km / h; related works for the electrified Renovation of the existing Sangxi contact line, Sangdong contact line. Set up 13 stations, 4 new, the use of existing 9. Total project investment of 100 million yuan.
6, the main environmental impact and countermeasures:(1) ecological: the project will occupy part of the forest and grassland vegetation, swamp vegetation and farmland vegetation, etc., the new section of the crossing of the two ecologically sensitive areas, a national cultural relics protection units and ecological protection of the red line in Hebei Province, the existing electrified section of the line through the three ecologically sensitive areas, a drinking water source protection zone and two. The new section crosses two ecologically sensitive areas, one national cultural relics protection unit and the red line of ecological protection in Hebei Province, and the electrification section of the existing line crosses three ecologically sensitive areas, one drinking water source protection zone and two national cultural relics protection units, which may have a certain negative impact on part of the vegetation and the relevant areas of wildlife and their habitats, wetlands.
The main protection measures: the new line through the Zhangjiakou Dam important wetlands, to take effective measures to reduce the occupation of wetlands. The electrification section of the new construction content control in the existing railroad land boundaries; construction period strictly limit the scope of construction, make full use of the railroad land and existing roads, strictly prohibit the construction of construction vehicles and personnel across the border construction; contact network column transport installation using railcars to reduce the disturbance. In order to reduce the impact of the construction process on the birds, the selection of low-noise equipment, avoiding construction in the morning and evening and other peak hours of bird activity, prohibit night construction; strengthen ecological monitoring, according to the impact of the situation in a timely manner to add the necessary protective measures; stripping the topsoil preservation before construction, and ecological restoration after the end of construction. Optimize the spacing of contact network and power supply line columns, reduce the number of settings, and shorten the construction time. During the construction period, the contact network columns are transported and installed by railroad cars. Sections involving ecologically sensitive areas should comply with the relevant control requirements or obtain the consent of the relevant departments.(2) noise and vibration: The construction and operation of the project will have an adverse impact on the sound environment and environmental vibration along the line.
Main measures: the project outside the rail center line within 30 meters of the noise sensitive points into the project demolition and relocation, predicted exceeded the sensitive points of the section to take sound barriers, acoustic windows or acoustic barriers and supplemented by acoustic window measures. Operation period to strengthen the wheel and rail maintenance, reduce additional vibration; strengthen the tracking and monitoring of sensitive points on both sides of the line, according to the monitoring results to further improve the prevention and control measures.(3) water environment: construction and operation period of sewage (waste) water discharge may have an adverse impact on the water environment, tunnel drainage may be on the residents of the production of water, the roof of the vegetation has a certain impact.
Main measures: the construction of the tunnel construction wastewater priority reuse, the remaining amount of treatment to meet the standards and then discharged. Tunnel through the spring section, the construction period to strengthen the advance geological forecast, take curtain grouting water blocking measures; strengthen the monitoring of the spring flow during the construction period, if the tunnel construction leads to a reduction in the spring flow affecting the residents of the production of water, timely remedial measures to be taken, set aside monitoring costs and remedial costs. Set up grease traps and multi-stage sedimentation tanks in the construction site, and set up temporary collection measures for domestic sewage in the construction camp, and centralized transportation. During the operation period, the station's domestic sewage is incorporated into the municipal pipeline network or self-built sewage treatment facilities. Sewage treatment facilities to take key anti-seepage measures.(4) Other: In accordance with the relevant provisions of solid waste treatment and disposal, classification and proper disposal of general solid waste and hazardous waste, hazardous waste to qualified units for disposal. New traction substation and base station final site as far as possible away from residential areas and other sensitive targets, after the operation to strengthen the contact network maintenance.
Public participation: public participation has been carried out in accordance with the requirements.
Related departments: the National Development and Reform Commission to develop and reform the basis of [2020] No. 1490 document approved the project feasibility study.