V. Traffic Information

(1) Grade of highway and design load: second grade of highway; design base period: 20 years.

(2) According to the latest road network planning, the annual average daily traffic volume of 2019 in the early days of the forecast is as follows, with an annual growth rate of 5.3%.

1 Dongfeng EQ140.                      900 vehicles/day    

2 Taila 111R                            550 vehicles/day

3 Kashqab 131                          700 vehicles/day        

4 traffic SH141.                         520 vehicles/day

5 Taila 130S                            820 vehicles/day          

6 Nissan CK20L.                        400 vehicles/day

7 Nanyang 351                          250 vehicles/day      

8 Fuso FP101                           340 vehicles/day

9 Liberation CA390                      200 vehicles/day    

10 cars.                                700 vehicles/day

VI. design principles

The design satisfies the requirements of the second-class highway standard on the premise of satisfying the engineering economy, adopts higher technical indicators as far as possible, and comprehensively considers the project cost, construction technical conditions, geological climate, sources of materials, and other influencing factors.

1. If the number is not increased, try to use higher technical indicators. Do not easily use low and limit indicators. Do not ignore the increase in the number of projects. Use high indicators. Try to ensure the safety and comfort of the vehicle when designing the route. , Quick and easy under the premise of the smallest amount of work, low cost, low cost, good purpose of economic benefits;

2. Handle the relationship between roads and agriculture, rural areas, and farmers, and pay attention to the cooperation with basic agricultural construction, so as to reduce the number of fields and try not to occupy high-yield fields and economic crop fields, avoid crossing the economic forest, and pay attention to road construction and land acquisition. Farmland water conservancy facilities, land planning combined;

3. Fully attach importance to hydrogeological conditions and problems. How bad geomorphology affects the stability of the road, and at the same time, the engineering cost for special geological treatment is very large. This will greatly increase the project cost and cost. Serious engineering geology and hydrology problems such as landslides, collapses, rock piles, debris flow karsts, swamps, etc. should be handled with caution. Under normal circumstances, they should be avoided as much as possible. When crossing must be adopted, reasonable locations should be selected to narrow the crossing range and corresponding treatment measures should be taken. ;

4. It is a basic national policy for China to attach importance to environmental protection and ecological protection, strengthen environmental protection work, attach importance to ecological balance, and create a good living environment for human beings.

VII. the main content

At the beginning of the design, three routes were selected for alignment. Because of the steeper terrain of the design range, relatively flat routes were selected along the slopes along the hills. However, due to the excessive number of crossings along the construction area, the construction was not conducive to the construction. The economic benefits, and finally through repeated thinking, set out a more appropriate route.