广东清远至连州山区一级公路升级改革勘察设计关键技巧(国外英文资料).docVIP

广东清远至连州山区一级公路升级改造勘察设计关键技术(国外英文资料) The state of the first class highway and the traffic development 1.1 overview Clear even first class road is located in the north minery in west of guangdong, the general trend for the north-south direction and route starting point is located at the guangdong xiang boundary, after chapter proposed appropriate to the state of hunan province highway, the finish is located in qingyuan city, guangzhou to qingyuan expressway, city, south along through the yao autonomous county, yangshan county, and the qingyuan city fresh county, the existing level of highway route total length of 213.28 Km. At present, it is an important part of the G107 guangdong province, which is an important channel in the pearl river delta region and the northern part of guangdong province and hunan province. We should open to traffic in November 1997, built in the early is the only way to contact xiang yue, daily traffic volume reached 12000 / day, due to the original design part technical index on the low side, some problems such as bending, continuous long steep, combined with a large number of overweight vehicles, road pavement damage is serious, traffic is becoming worse, partially closed and the influence of the mixed traffic accidents occur frequently. According to the national highway network planning and guangdong province highway network planning, clear even the first-class highway route corridor position belongs to a part of the national highway to guangzhou, but also in the guangdong province highway planning vertical sixth is an important part of. In order to make full use of the channel of clear even first class road corridor resources, speed up and improve the state, the guangdong province highway system, give full play to the skeleton network function and improve the road network as a whole Yi, lighten the beijing-zhuhai expressway traffic pressure, strengthen transport links in the pan pearl river delta economic circle, enhancement of the pearl ri