Interpretation of the guiding opinions on Further Strengthening the survey, design and construction management of ordinary highways

2022-06-21 Source: Views:272

Interpretation of the guiding opinions on Further Strengthening the survey, design and construction management of ordinary highways recently, the Ministry of transport issued the guiding opinions on Further Strengthening the survey, design and construction management of ordinary highways (jglf [2022] No. 71, hereinafter referred to as the Guiding Opinions). In order to facilitate the relevant units to better understand the relevant contents and effectively carry out the implementation work, Mrs. Wang, deputy director of the Highway Bureau of the Ministry of railways, interpreted the guiding opinions.

What is the background and purpose of the guidance?

Mrs. Wang: the guiding opinions are mainly aimed at guiding and standardizing the survey, design and construction management work and promoting the high-quality development of ordinary highways in the new development stage according to the characteristics of ordinary highways. Compared with expressways, ordinary highways, including ordinary national and provincial trunk highways and rural highways, have the characteristics of wide coverage, large service population and strong public welfare. They are the main body and foundation of the highway network. Compared with highways, ordinary highways are closer to the masses and people's livelihood, and undertake the important mission of serving the "last kilometer" of transportation. In recent years, China's ordinary highways have developed rapidly. The mileage of ordinary national and provincial trunk highways has increased by more than 10000 kilometers every year, with a total mileage of 763000 kilometers. It is widely connected with administrative regions at or above the county level, important towns, industrial parks, transportation hubs and tourist attractions, of which the proportion of class II and above highways has reached 71%; The average annual growth of rural roads is more than 90000 kilometers, with a total mileage of 4.466 million kilometers, realizing the grand goal of providing hardened roads for qualified organic villages, and laying a solid foundation for the smooth realization of the goal of poverty alleviation and Rural Revitalization.

In the process of rapid development of ordinary highways, transportation departments at all levels have continuously strengthened engineering survey, design and construction management, and the design level and engineering quality have been continuously improved. During the "13th five year plan" period, the Ministry has successively issued policy documents and technical standards on green roads, quality projects, service facilities upgrading, and "four good rural roads". All localities have actively built demonstration projects and benchmarking projects, and achieved good results. At the same time, there are many ordinary highway projects, a wide range of regions and relatively low construction investment standards, which are prone to weak links. First, the general highway construction management is mainly implemented by cities and counties, and the overall planning guidance is relatively weak. Second, some project management is not standardized, the approval procedures are not strict, and some have not fully realized the separation of construction and management, and failed to give full play to their regulatory functions. Third, compared with major projects such as expressways, the survey and design of some ordinary highways are relatively weak, the design depth and quality of design documents are not high, and the program is not targeted. Fourth, the construction level is not high, the project is small and scattered, resulting in a low degree of intensive construction, and there is still a gap between the on-site construction management ability and the new requirements for high-quality development.

In order to further strengthen the survey, design and construction management of new and reconstruction projects of ordinary highways, ensure the project quality, safety, progress and investment benefits, promote the high-quality development of ordinary highways and create first-class highway infrastructure, the Highway Bureau of the Ministry of Railways has organized the drafting of the guiding opinions on the basis of in-depth investigation.

Based on the new development stage, what are the general requirements for ordinary highway construction in the guiding opinions? How to implement?

Mrs. Wang: the guidance clarifies the general requirements for the construction of ordinary roads, emphasizes the strict capital construction procedures and the "four systems", implements the responsibilities of all parties, strengthens technical guidance, strengthens industrial supervision, standardizes market order, and improves the project quality, safety, economy and environmental protection. First, deepen the preliminary demonstration of the project. The preliminary stage is the key stage of the project decision-making demonstration. The highway is constructed in sections and operated in a network. It is necessary to focus on the overall planning of the route corridor, technical standards, construction and maintenance timing, etc. the provincial transportation departments strengthen the preliminary planning of national and provincial highways, and the County transportation departments strengthen the preliminary planning of rural highways. In the near future, we should focus on accelerating the construction and transformation of inter provincial (interregional) roads to be penetrated and bottleneck sections. Second, strict construction procedures. As an infrastructure, once the implementation is irreversible, the necessary construction procedures are the premise to ensure the scientific decision-making and implementation effect. The guiding opinions emphasizes strengthening the demonstration and approval work at all stages, and at the same time, simple approval can be implemented for qualified rural roads. Third, grasp the technology policy. The guiding opinions emphasize the rational determination of the technical grade and technical standard of ordinary roads, especially the demonstration of giving priority to the use of existing roads as much as possible, so as to save investment and land occupation, avoid greater impact on the mountains and natural environment, and give play to the advantages of old roads closer to villages and towns, so as to better reflect the service function; For local difficult sections, the demonstration shall be strengthened according to the standards and specifications, and the safety assurance measures shall be strengthened. In addition, highway investment should avoid the misunderstanding of only paying attention to pavement and greening, improve drainage facilities, protective works and safety facilities, improve disaster resistance and ensure safety and durability; Avoid directly linking the administrative grade and technical grade of roads, especially rural roads, which should adapt to local conditions and should not unilaterally pursue too high technical grade.

What are the requirements of the guiding opinions for survey and design and what are the main problems to be solved?

Mrs. Wang: concept is the guide and design is the leader. Although the construction concept and survey and design level of ordinary roads are generally good, there are still some problems: first, the level of participating units is uneven, the investment scale is relatively small, the design cost is not high, and the market attraction is not strong. Second, the construction concept of some projects needs to be improved, and the environmental coordination and service functions need to be strengthened. The actual operation speed of some sections is low. Third, the survey and design management is not strict. Insufficient attention has been paid to the survey and design of ordinary roads, insufficient demonstration and investigation, lax internal audit, and the pertinence and creativity of the design scheme need to be strengthened. Fourth, the demonstration of some major technical schemes was insufficient. Some mountain projects have unreasonable technical indicators, insufficient design refinement, large-scale filling and excavation, insufficient investigation and evaluation of the original road, and low utilization rate of the old road. As ordinary highways are mainly implemented by cities and counties, some local technical forces are relatively weak, which restricts the improvement of the overall design level.

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