The regular Shuntian cast iron drain pipe from the Huaibei drainage pipe supplier will be shipped on the same day

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　　The regular Shuntian cast iron drain pipe from the Huaibei drainage pipe supplier will be shipped on the same day

　　The problems and solutions in the road drainage system of municipal engineering. With the continuous development of society and the urbanization process meeting people's growing needs, the drainage system of municipal roads is a problem that must be solved in the urbanization process. In recent years, there have been frequent news reports about "watching the sea" in cities, which means that the problem of road drainage system in urban areas is not a problem for a single city, but a problem that most cities need to face. The main reason for the phenomenon of "watching the sea" in the city is due to the imperfect drainage system of the city's roads. If the drainage system is not smooth, the accumulated water cannot be discharged in a timely manner, which will greatly affect people's lives. In addition, it will also have a great impact on the city's appearance. The per capita length of drainage pipelines in our country is less than 30 meters, which is a significant gap compared to the drainage systems of developed countries.

1、 The current situation of road drainage system in municipal engineering: (1) Unreasonable planning of early urban road drainage system. The planning of urban road drainage system is also part of urban planning. An excellent urban planning can free the development of a city from the constraints of planning, and fully demonstrate the potential of the city. The planning of urban drainage systems is generally carried out by the city's planning bureau for the overall design of the city, and then constructed by bidding companies. When conducting early urban planning, the future development of the city will definitely be taken into account. However, due to the acceleration of technological development, urban planning is likely to not meet the needs of later cities, and the current road drainage system is also in the same situation. The road drainage system in a city is very important and can be called the "blood vessel" of the city. However, in the early stages of design, it is difficult to plan a road drainage system that is in line with the development of the city without considering various aspects. In addition to not considering comprehensively, urban planning without long-term considerations can also affect the drainage system of urban roads.

　　When the longitudinal slope of the bridge deck is greater than 2% and the bridge length is greater than 50m, drainage pipes need to be installed every 5-15m to prevent rainwater from accumulating on the bridge deck. When the longitudinal slope of the bridge deck is less than 2%,

　　The drainage pipe needs to be set denser, usually every 1-5 meters. The discharge area of the drainage pipe is usually not less than 2 × 10-4 to 3 × 10-4m2 per square meter on the bridge deck. The drainage pipe can be symmetrically arranged on both sides of the roadway, or staggered. The distance between the drainage pipe and the curb is 0.10-0.50m. The drainage pipe can also be arranged under the sidewalk,. The bridge deck water flows into the drainage hole through the inlet holes located on the side of the curb or sidewalk components, and corresponding water collection tanks are set up around the three edges of the drainage hole to collect, guide, and intercept water. To prevent large pieces of garbage from entering and blocking the drainage channel, a cast iron grille cover is installed at the inlet of the water inlet. （1） The circular drainage pipe diagram of the longitudinal drainage hole of the cast iron drainage pipe shows a relatively complete structure of cast iron water pipe, suitable for paving structures with waterproof layers for longitudinal drainage. The inner diameter of the drainage pipe is generally 0.10-0.15m, and the lower end of the pipe should extend at least 0.15-0.20m below the bottom of the roadway slab to prevent moisture from seeping into the surface of the main beam ribs. （2） Horizontal drainage holes for cast iron drainage pipes are generally installed at the intersection of wall guardrails and bridge decks. For small bridges with small spans and no sidewalks, sometimes in order to simplify the structure and save materials, horizontal holes can be directly reserved on the safety belts or curbstones on both sides of the roadway, and water can be discharged outside the bridge using iron pipes or PVC pipes. The pipe mouth should extend 0.02-0.03m from the component to facilitate dripping. （3） The rectangular drainage pipe diagram of reinforced concrete drainage pipe is pre embedded with reinforced concrete and drainage pipe during bridge deck construction, and holes can also be reserved. It is suitable for paving structures using waterproof concrete without waterproof layer

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