1. Plastic Drainage plate Structural characteristics of
The plastic drainage board is composed of an extruded plastic core board and a non-woven geotextile filter layer wrapped around its two sides. The plastic core plate serves as the skeleton and channel of the drainage belt, and its cross section is in the shape of a parallel cross, so the water can flow smoothly through the core plate and be discharged. The filter layer plays a filtering role, which can prevent impurities such as sediment in the soil layer from entering the drainage channel and prevent the drainage system from being blocked.
2. Working principle of plastic drainage board
The working principle of plastic drain boards is relatively simple but efficient. In soft soil foundation treatment, plastic drainage boards are inserted into the foundation by a board inserting machine to form vertical drainage channels. When the preloading load is applied to the upper part, the void water in the foundation is discharged into the upper sand layer or horizontal plastic drainage pipe through the plastic drainage board under the action of pressure, and then discharged from other places, which can accelerate the consolidation process of soft foundation. In this process, the plastic drainage board not only provides a drainage channel, but also prevents soil erosion through the action of the filter layer.
3. Drainage method of plastic drainage board
The drainage methods of plastic drainage board mainly include radial drainage and vertical drainage.
1、Radial drainage: Radial drainage refers to the radial discharge of water along the drainage groove on the edge of the plastic drainage board. Due to the design of the drainage groove, the water flow speed is relatively fast and the drainage effect is obvious. Radial drain plates are suitable for a variety of situations and are relatively easy to install and repair.
2、Vertical drainage: Vertical drainage means that water is discharged into the holes in the board along the vertical direction of the surface of the plastic drainage board, and then discharged through the holes. The vertical drainage board has a relatively large amount of holes, so its drainage capacity is strong. The vertical drainage board is also very convenient during the construction process, and basically does not require additional processes.
4. Precautions for the construction of plastic drainage board
1、Construction preparation: Before construction, ensure that the construction site is flat and compacted, and remove sharp protrusions. Also check the quality of the plastic drainage board to make sure it performs as it was designed for.
2、Laying and fixing: The plastic drainage board should be laid according to the design requirements, and the verticality of the drainage hole should be maintained. During the laying process, special tools should be used to fix the drainage board in the foundation to ensure the stability of the drainage channel.
3、Filling and compaction: After the drainage board is laid, the filling and compaction work should be carried out in time. The filler should be made of materials that meet the requirements and compacted in layers to ensure that the compaction degree meets the design requirements.
4、Waterproof and drainage measures: During the construction process, waterproof and drainage measures should be taken to prevent water from eroding and damaging the drainage board. Also check the operation of the drainage system regularly to ensure that the drainage is unimpeded.
Post time: Jan-15-2025
