Such a wide range of applications for diaphragm walls has ten advantages

For people engaged in the construction industry, underground continuous walls are not unfamiliar. Then, what is the function of the underground continuous wall? What are the advantages and disadvantages of the underground continuous wall ? The underground continuous wall technology originated in Europe. It was officially applied in the Italian Milanese project in 1950. It was introduced in Japan in 1959 and applied to the water conservancy project dam in the same period in China. Impervious walls, used in construction projects since the 1970s, have been widely used in underground and other engineering applications in recent years. The following is to follow me to understand the role and advantages and disadvantages of the underground continuous wall.

Continuous wall effect

(1) Retaining effect. When excavating the trench, the soil near the surface is extremely unstable and easy to collapse, and the mud does not function as a retaining wall. Before the excavation of the unit tank section, the guide wall functions as a retaining wall.

(2) As a benchmark for measurement. The position of the groove is defined, which indicates the division of the cell section and serves as a reference for measuring the elevation, verticality and accuracy of the groove.

(3) Support as a weight. The support of the grooved mechanical track, the fulcrum on which the reinforcement cage, joint pipe, etc. are placed, sometimes bears the load of other equipment.

(4) Deposit mud. The guide wall can store mud. The surface of the mud should be kept 20cm below the guide wall and 1.0m above the groundwater level to stabilize the wall.

(5) Prevent mud loss; prevent surface water such as rainwater from flowing into the tank.

Underground continuous wall advantages

1. High work efficiency, short construction period, reliable quality and high economic benefits.

2. Small vibration and noise during construction, suitable for construction in the city.

3. With less land occupation, we can make full use of limited ground and space and fully realize the investment benefits.

4. Good anti-seepage performance, due to the improvement of joint form and construction methods, the underground continuous wall is impervious to water.

5. Used for reverse construction. The underground diaphragm wall has a large rigidity, and it is easy to install the buried parts, and it can be used in reverse construction.

6. can be close to the construction. With the above advantages, close to the original building, construction of underground continuous wall.

7. As a hydraulic structure anti-seepage structure, very safe and economical.

8. The wall has large rigidity and can withstand earth pressure when excavated in foundation pits. It rarely causes landslides and has become an essential retaining structure.

9. Suitable for a variety of ground conditions. The scope of application of the foundation is wide, and all foundations can construct underground continuous walls.

10. Can be used as a rigid foundation. It is no longer used as a waterproof, deep foundation pit wall, and instead of pile foundations, caisson or caisson foundations, to withstand greater loads.

Underground continuous wall defects

1. In the construction of a city, the disposal of waste mud is troublesome.

2. If the underground continuous wall is used as a temporary retaining structure, the cost will be higher.

3. If the construction method is improper or the construction conditions are special, the problem of misalignment and leakage of the adjacent wall sections.

4. Under special geological conditions (such as muddy soil, alluvial rock with boulders and superhard rock, etc.), construction is difficult.

Editor's summary: The above is the reason why the underground continuous wall is so widely used because it has ten major advantages related to the introduction of knowledge, hope to help to meet the needs of friends! For more information, please continue to pay attention to our website, follow-up Will present more exciting content!

Diaphragm Wall