Cross -highway 1. Cross -crossing angle requires the transportation industry engineering standard "Highway Road Design Specifications" 12.5.1 stipulates that the intersection of highways and overhead transmission lines should be intersecting.

span the highway

1, cross-crossing angle requirement

transportation industry project "Highway route design specifications" (JTC D2017) 12.5.1 regulations: intersection of highway and air-to-air transmission lines for Orthodox is appropriate. When it must be obliquely, its cross -sharp corner should be greater than 45º. "Article 9.5.2 of Highway Engineering Technology Standards (JTG B01-2014) stipulates that when the overhead transmission line and the highway cross each other, it is advisable to be orthogonal; when the oblique crossing, the cross angle should be greater than 45º, and the overhead telegram route across the highway across the highway At the time, the minimum vertical distance at the intersection of the route and the highway is required to meet the corresponding requirements of the corresponding power supply line nominal voltage regulations. The

cross -angle problem for the intersecting cross -angle of overhead transmission lines and highways has no requirements for industry regulations related to the power industry or national standards.

span the highway

2, the wire vertical distance of the wire to the

air input line and the highway cross -crossing, the operating temperature of the wire should Ring temperature for 50 ° C) situation or ice covering The maximum vertical calculation wire obtained by the windless situation is the vertical distance of the highway. The lines in the reimmix area also need to calculate the uneven ice covered by the wire and the calculation of the ice. Vertical distance. When crossing highways and first -class highways, when the distance is over 200m, the maximum vertical calculation wires obtained at the allowable temperature (70 ° C or 80 ° C) of the wire to calculate the vertical distance of the road on the highway. Based on the above calculations, then according to the "Specification of Specifications for Evernight Electricity Circuits" (GB 50061-2010), (110kv ~ 750KV overhead transmission line design specifications), (GB 50545-2010), "1000KV overhead transmission line design Specifications (GB 50665-2011), "± 800KV DC overcurrent air transmission line design specifications" (GB 50790-2013), "± 1100kV DC overcurrent air transmission line design specifications" (national standard report), "high-voltage DC overcourse air transmission line design technology Regulations (DL 5497-2015), "Design Specifications for Highway Road" (JTG D20-2017), etc., etc. Require.

surface overhead transmission wire circuit wire is the smallest vertical distance

. There may be problems with the position of tower . In addition to the above requirements, the maximum wind or winding the wind is also required to the road. Whether the distance meets the safety distance requirements.

span the highway

3, the tower-to-high road horizontal distance requirement

according to the "66KV and the Aerate Electric Power Code Design of 66KV and below" (GB 50061-2010), (110kv ~ 750 KV overhead transmission line design specification) (GB 50545-2010) , "1000KV Organization Code Design Specifications" (GB 50665-2011), "Design Specifications for the Design Specification of ± 800KV DC Electric Wiring Circuit" (GB 50790-2013), "Design Specifications for the Standard Draft of the National Standard News)," National Standard News) The Technical Regulations of the High-voltage DC Electric Electric Wiring Circuit (DL 5497-2015) and the "Highway Road Design Specifications" (JTG D20-2017), etc. The minimum level distance from the outer edge to the edge of the road base should meet the following requirements.

Terminal overhead transmission lines (tower) outer edge to the edge of the road base to the edge of the road base. In addition,

also, according to Article 11 of the Highway "Highway Safety Protection Regulations" (2011 edition), the local people's governments at or above the county level shall organize transportation, land and resources to organize transportation, land and resources in accordance with the principles of ensuring the safety of the road operation and the development of the road. Eliminates the scope of , building control area of ​​the highway. The scope of the highway building control area, the distance standard from the outward edge of the road land is: (1) the National Highway is not less than 20 meters ; No less than 10 meters ; (4) Township Road is no less than 5 meters .If it belongs to the highway , the distance standard of the highway building control area from the outer edge of the road land is not less than 30 meters . The range of the construction control area of ​​the inside of the highway curve, interchange, and plane cross channels is determined according to the requirements of security vision.

knows above that although the land outside the road does not belong to the scope of highway land, the "Highway Safety Protection Regulations" also make the range of construction control areas outside the highway. To be high. In addition, the provinces (cities/districts) also have separate highway management regulations, and some provinces (cities/districts) require highway management regulations. The origin of 50 meters outside , highway ramp and connection lines from the outer edge of the connection line to the outside of 20 meters are Building Control Area. Although it is within the scope of the highway building control area, it is stated that no construction is said to be prohibited. When construction, the opinions of road management units should be solicited according to the permanent planning, or all units and negotiations. Carry out the corresponding work. In many areas, the transmission lines constructed along the highway are implemented in accordance with the relevant design regulations of the power and highway. At the same time, the GB 50665-2011, DL 5497-2015 and the "Design Specifications for the Code of ± 1100KV DC Electric Route" (Approval of the National Standard News) In addition to the specified value, it also explains or according to the agreement and the value also illustrates this problem.