During the construction of geogrid, especially when the subgrade is strengthened, the longitudinal slope of the ditch should be the curve of the longitudinal light convergence of the ditch, and the phenomenon of water accumulation or overflow is not allowed on the inside of the curve. Water is introduced into the natural hillside side channel inlet or bridge and culvert, the outlet of the drainage ditch must be robust, and the sewer should be available, if necessary, or the effect of water spraying or tank water.
The geogrid of the subgrade structure or the water jet with the box must use the mortar masonry structure according to the terrain, the step height of the water drop, and the height level and length ratio of the multi-step steps determined by other geological conditions should adapt to the original ground slope. It is required to set terminal and internet gateway for the masonry base. The jetting groove structure of the embankment slope, which can flow into the drainage, should provide a flat trickle path, and the water jet from the kerb and opening into the transition part of the embankment slope should be connected to the flat trickle groove embankment slope to avoid a water supply that can be passed by a high road to keep the shoulder washed away from the road kerb, drainage ditch, or intercept the direction of the water jet from the opening of the water retaining groove to flow from the far side of the embankment, and the connection of the jetting groove at the height of the embankment should be provided with a speaker mouth. The roadside shoulder must be arranged according to the local design. Shoulders on the roadside should be properly strengthened.
The subgrade geogrid and the drainage ditch at the outlet must have a light interface with other drainage facilities. In order to prevent water infiltration and erosion, the drainage ditch should be closely infiltrated and strengthened. The unfavorable geological profile and soft soil seepage should be suitable for the part and outlet of the drainage ditch with larger fissured rock or soil with larger longitudinal slope. Strengthening measures should be taken to prevent water seepage and erosion, and the ditch wall. When the rubble ditch is used for paving, it must have thin slices of rock, and each cobble puzzle uses the flat surface of the embedded mouth; The joint with the paving mortar stone and masonry mortar shall be sufficient, and the main groove shall be watertight; If gypsum is used at the bottom of the groove, the stone bone shall be calendered.
Post time: Feb-01-2023