What is the purpose of dewatering in foundation pit?

When it comes to foundation pit deformation monitoring, relevant architects are still relatively unfamiliar. What is the basic situation of foundation pit dewatering? What is the purpose of foundation pit dewatering? The following are the contents of the architect's foundation pit project consulted by Zhong Da. The specific contents are as follows:

Through the knowledge collation of architectural knowledge column of this website, Zhong Da Consulting has a basic overview of the use of foundation pit as follows:

Basic survey of foundation pit dewatering:

Reducing groundwater in foundation pit engineering is also called groundwater control, that is, in the process of foundation pit engineering construction, groundwater should meet the requirements of supporting structure and excavation construction, and will not bring harm to the environment and facilities around the foundation pit because of the change of groundwater level. The main methods of foundation pit dewatering include open ditch drainage, light well point dewatering, electro-osmosis well point dewatering, tube well dewatering, radiation well point dewatering and self-seepage well point dewatering. The following briefly introduces the applicable conditions, advantages and disadvantages of the above methods.

Foundation pit dewatering purpose:

When excavating a foundation pit, if the groundwater level is too high, if it is not lowered in time, it will not only worsen the construction conditions, cause the soil wall to collapse, but also affect the bearing capacity of the foundation. In severe cases, it may even cause quicksand. Therefore, in earthwork construction, it is very important to do well the dewatering work and keep the soil dry, which also improves the working conditions.

However, before precipitation, it should be considered that the existing buildings and structures within the influence range of precipitation may have additional settlement and displacement, which may cause cracking, inclination and collapse, or cause ground collapse, and effective protective measures should be taken in advance if necessary.

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