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With the acceleration of urbanization and the increase of private cars, land resources are becoming more and more scarce. Large-scale underground garage construction has become inevitable. At the same time, in order to alleviate the urban heat island effect, weaken the urban noise, alleviate the atmospheric dust, and improve the living conditions of the people, it is necessary to plant plants on the roof of the garage. Although the soil layer on the planting roof is very thick and the water seepage speed is slow, once the water seepage reaches the saturation form to form a stagnant area, it will not only affect the growth of vegetation, cause root rot and plant wilt, but also the hydrostatic pressure will destroy the weak part of the waterproof layer and cause leakage. Therefore, a reliable drainage system must be installed under the soil layer to timely remove the excess water in the soil, so as to reduce the pressure of the waterproof layer on the roof, extend the service life, and create an environment to meet the plant growth.
The leakage rate of the roof of the planting roof is 80%. How to effectively remove the excess water in the planting system, ensure the growth of vegetation, and ensure the safety of the waterproof layer.
Advantages of planting roof and roof greening system of underground buildings
1. The integrated hot melt integrated process can reduce the construction process, pave once and cover the soil immediately after laying
2. With the integrated hot melt integration process, each square meter is supported by over 1000 convex points, with super soil carrying capacity, ensuring that the covering soil does not collapse and the drainage system is smooth.
3. The integrated hot-melt integrated process, with super compression and soil carrying capacity, can keep the gap between the filter cloth and the drainage channel for a long time, so as to achieve the root blocking effect and ensure that the waterproof layer is not damaged.
4, PET polyester filaments filter aging, acid and alkali resistance, 50 years without degradation, continuous play the role of anti filtration, to ensure water and soil separation, so as to ensure smooth drainage channel.
5. PET polyester filament filter cloth has super tensile strength, the tensile strength can reach 15kn / m, while the tensile strength of ordinary short fiber geotextile is only 6.5kn/m, so as to ensure the weak compression deformation of the inverted filter layer, strong soil carrying capacity, and a comfortable drainage channel.
6. MDS high tensile filter plate is light in weight and reduces building load.
7. "Because of the good filtration, the drainage is good; because of the good drainage, the prevention is good." Through the realization of active drainage, the waterproof effect of the system is ensured.
Second: MDS high tensile filter plate - Application of side wall waterproof and drainage protection system of underground buildings
With the full development and utilization of underground space, the waterproof of underground buildings has also attracted great attention. Although the quality of various waterproof materials is up to the standard and the construction technology is becoming more and more perfect, due to the complex structure of underground buildings, many kinds of pipelines are concentrated and long-term affected by water pressure, many underground buildings have different degrees of leakage
How to reduce the threat of long-term hydrostatic pressure on the side wall of underground buildings, ensure that the waterproof layer can play a lasting role, keep the wall dry, and make the building more durable and solid.
Traditional practice 1: polystyrene board or extruded board protection
1. The construction of polystyrene board or extruded board is troublesome, and the construction period is delayed slowly.
2. Polystyrene board or extruded board is easy to be deformed and brittle due to small area of material under pressure, and easy to fall or perforation when backfilling.
3. The density of polystyrene board or extruded board is small, it is easy to absorb water, and the strength of the board buried in the soil for a long time does not play a protective role.
Traditional practice 2: brick wall protection
1. The cost of brick wall protection is high, the construction is complex and the construction period is long.
2. Brick wall protection belongs to semi-rigid protection layer, which can not be permanently pasted and suitable for protection, and the waterproof layer is easy to be damaged during construction.
3. There is no drainage channel for brick wall protection, and water is easy to accumulate outside the wall, so that the waterproof layer is threatened by static water pressure for a long time and easy to leak.
Product advantages
1. When backfilling, the pressure is evenly distributed at thousands of supporting points per square meter to protect the waterproof layer from damage.
2. High tensile filter cloth can support backfill well and keep drainage space unblocked for a long time.
3. It can take into account the rapid water filtration and drainage, so as to protect the internal structure from the threat of hydrostatic pressure.
4. The normal drainage space forms a flowing air layer, which can effectively prevent moisture and keep the front dry.
5. HDPE Sheet and air layer can effectively block the roots and prevent the roots from damaging the waterproof layer.
6. Integral welding process to prevent moisture intrusion.
7. The construction is fast, the fixation is firm and simple, and the construction period is greatly shortened.
Third: in the underground building floor waterproof and drainage protection system application
The deep development of the underground space causes the building floor to bear the influence of hydrostatic pressure for a long time, and the underground water seeps upward, which affects the use function. What's more, the underground will produce the buoyancy to the building, and will destroy the structure of the building in serious cases, resulting in unpredictable danger.
Drainage protection of traditional underground building floor and its defects
People have always pinned the waterproof layer on the bottom slab. Due to the top-down construction technology, the waterproof layer can only be used as the concrete cushion under the foundation. However, due to the influence of settlement and hydrostatic pressure for a long time, the waterproof layer is very vulnerable to damage, and the rigid waterproof concrete layer will crack, leading to leakage.
Product advantages
1. MDS high tensile filter plate with a convex point height of 10 mm has a compressive strength of about 259 kn / m2.
2. During installation, it is laid on the cushion with the convex point facing down. When pouring, the concrete is filled with concave surface, which greatly improves the compressive strength
3. The high-strength filter cloth can effectively remove the fine sand mixed in the ground water and only make the water enter the drainage channel.
4. The high tensile filter plate can directly bear the hydrostatic pressure, and can quickly drain and relieve the pressure.
5. High quality polyethylene drainage board has a good moisture-proof and waterproof function, which can block the rising of moisture.
6. The drainage space with height of 10 mm can reach the drainage capacity of 5 L / s. square meters, which can meet the drainage demand even in water rich areas.
Fourth: application of waterproof and drainage protection system in tunnel / subway / underground pipe gallery
In the railway tunnel, highway tunnel, subway and urban underground pipe gallery, there are a lot of fissure water or surface seepage water in the surrounding rock fracture and soil. After the excavation of the tunnel, the fissures will further develop and the fissure water will be more abundant. Once the tunnel leaks, it will cause different degrees of erosion to the supporting structure and reduce the durability of the tunnel supporting structure Finally, the service life is reduced. If there is no organized drainage system for surface seepage, the water will penetrate into the building from the weak part of the waterproof layer over time, causing leakage. Therefore, whether it is in the mountains or cities to build infrastructure, the construction of the drainage system is very important.
Defects in traditional practices
1. Single waterproof layer does not have drainage capacity, and the waterproof effect is poor
2. If the waterproof board is damaged, leakage and water channeling are easy to occur
3. Once leakage occurs, the treatment is difficult and expensive, affecting traffic safety.
Advantages of MDS high tensile filter plate in tunnel drainage protection system
1. The effect of integration of filtration, drainage and prevention can eliminate the laying of waterproof board, ring and longitudinal drainage pipes and reduce the project cost.
2. The MDS high tensile filter plate integrated and equipped with sling, which can be hung quickly at one time, greatly reduces the difficulty compared with the cloth and plate hanging twice, and avoids the damage to the coiled material by fixing with steel nails, so as to ensure that there is no water permeable point in the whole.
3. The pavement is flat, and the concave surface of the drainage plate can be used as the secondary lining pouring formwork, which is dense and intact with the concrete, forming the back sticking protection.
4. Pet high tensile filter cloth can quickly permeate water and block the fine sand mixed in the fissure water, and the fissure water can quickly flow into the drainage ditch by using the tunnel slope.
5. The coil length can be customized according to the actual needs to avoid short edge overlapping, and the overall waterproof and drainage effect is outstanding.
6. Resistance fuel can be added according to the design requirements, which can meet the requirements of fire-retardant grade of waterproof materials used in tunnels, while maintaining good physical properties.
Fifth: the application in the subgrade slope waterproof and drainage system
Problems in the drainage system of traditional highway subgrade
1. The accumulated water on road subgrade and both sides cannot be discharged in time
2. Lack of a durable barrier between soil and road hunger
3. Ponding damages the overall load capacity and road structure
4. The construction of common drainage board and geotextile layer by layer is slow, and the geotextile is easy to slide and displace, which is blown by wind.
Advantages of MDS high tensile filter drainage plate in highway subgrade drainage system
1. Efficient drainage, timely drainage of pavement seepage, and protection of Subgrade
2. Reliable waterproof, prevent the capillary reverse osmosis of soil layer groundwater and bad soil
3. Integrated integrated technology, thousands of high-strength fulcrums per square meter can improve the bearing capacity of the pavement - increase the bearing capacity of the same pavement by 50% or reduce the thickness of the road structure by 25 ° without changing the bearing capacity.
4、 Integrated integrated process can be paved at one time, reducing the construction process, and the construction is quick and convenient
Application advantages of MDS high tensile filter plate in railway subgrade drainage system
1. Isolate poor soil and ballast and keep the road elastic
2. Improve the load capacity of road subgrade
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Shandong Jiantong Jiawei to learn more about price issues. Business cooperation: 15621256661 (wechat same number)
For more information, please click the official website below: read the original
For more information, please click the official website below: read the original