Road network balanced drainage method aimed at reducing urban waterlogging

A road network balanced drainage method aimed at reducing urban waterlogging, comprising:

• Step 1:
• determining a water accumulation section;
• Step 2:
• taking the intersection at the upstream of the road section where the water accumulation section is located as the first intersection;
• Step 3:
• judging if the requirement of flow distribution is met at the first intersection;
• Step 4:
• carrying out elevation reconstruction at the first intersection if the requirement of flow distribution is met at the first intersection so that the water flowing into the first intersection flows to the road other than the road where the water accumulation section is located;
• if the requirement of flow distribution is not met at the first intersection, tracing along the water inlet road of the first intersection upwards to the second intersection at upstream side;
• Step 5:
• judging if the requirement of flow distribution is met at the second intersection;
• Step 6:
• carrying out elevation reconstruction at the second intersection if the requirement of flow distribution is met at the second intersection so that the water flowing into the second intersection flows towards the road outside of the first intersection;
• if the requirement of flow distribution is not met at the second intersection, tracing along the water inlet road of the second intersection upwards to the third intersection at upstream side;
• Step 7:
• judging if the requirement of flow distribution is met at the third intersection;
• Step 8:
• carrying out elevation reconstruction at the third intersection if the requirement of flow distribution is met at the third intersection so that the water flowing into the third intersection flows to the road outside of the second intersection;
• if the requirement of flow distribution is not met at the third intersection, tracing along the water inlet road of the third intersection upwards to the fourth intersection at upstream side;
• and
• repeating Step 1 to Step 8 until the intersection meeting the requirements of flow distribution is found and the facade renovation is carried out at the intersection, so that the flow of water into the intersection to flow to the road other than the upper intersection or to flow to the road other than the road where the water-logged section is located,
• wherein Step 1 is (1) determining the waterlogged road section through observation and analysis, or (2) through drawing analysis and on-site observation, the section with V-shaped longitudinal road surface alignment at the non-intersection is determined as the waterlogged road section.