As foundation subsidence expert is also known to be subsidence expert, there are many reasons for it, including natural factors such as changes in groundwater level and earthquakes, as well as anthropogenic factors such as inaccurate geological investigation and imbalance between load and foundation bearing capacity.

The following is a detailed analysis of foundation subsidence expert causes and subsidence control measures:

First, natural factors

1. Geological conditions: Factors such as the nature, thickness, distribution and change of the soil layer directly affect the bearing capacity of the foundation. Soft soil layer, uneven soil layer or soil layer with a lot of voids are easy to compress and deform under load, resulting in foundation settlement.

2, the change of the groundwater level: the change of the groundwater level will directly affect the gravity stress of the soil, and then affect the deformation of the foundation. When the groundwater level rises, the pore water pressure of the underground soil layer increases, causing soil expansion, which may increase the settlement of the foundation. On the contrary, when the groundwater level drops, the pore water pressure of the soil decreases and the soil shrinks, which may reduce the settlement of the foundation, but may also increase the settlement due to the consolidation and compression of the soil. It is worth noting that long-term groundwater extraction or groundwater table fluctuation may cause the stability of the foundation soil layer to be damaged, and then cause the foundation settlement.

3, seismic activity: earthquake will cause the crust to shake, so that the soil layer is affected by squeezing, shaking and liquefaction, resulting in foundation settlement and ground settlement. The propagation of seismic waves and the release of seismic energy will directly act on the soil layer, change its physical and mechanical properties, and cause the foundation settlement.

4, climate and environmental factors: long-term dry and wet cycle, freeze-thaw, erosion and other environmental factors may also lead to changes in the physical and mechanical properties of the foundation soil layer, causing foundation settlement.

Second, human factors

1. Inaccurate geological investigation: inaccurate geological investigation or unreasonable design, such as failure to fully grasp the actual situation of the foundation soil layer, failure to accurately assess the bearing capacity of the foundation or failure to take effective foundation treatment measures, may lead to foundation settlement.

2, load and foundation bearing capacity imbalance: the building's own weight and upper load on the foundation produce additional stress, if the bearing capacity of the foundation is not enough to support these loads, it will lead to foundation settlement. In addition, the compression modulus of soil and the external additional stress are also important factors affecting the foundation deformation. During the use of the building, due to the change of the use function or the addition of new loads (such as increasing the floor, changing the use of use, etc.), the foundation may also be subjected to loads exceeding the design standards, causing the foundation settlement.

3. Unreasonable architectural design: If the size of the foundation and the distribution of piles are not considered in the architectural design, or the geological conditions in which the foundation is located are not effectively treated, it may lead to uneven settlement of the building foundation. For example, the high middle height of the overall structure design and the unequal load distribution will increase the risk of foundation settlement.

4, improper construction process: In the construction process, if the construction sequence is unreasonable or the construction quality is not up to standard, such as not in accordance with the requirements of the first construction of the high-rise load capacity of the part, the settlement joint reservation is insufficient or the construction of the foundation soil disturbance is too large, may lead to uneven settlement of the foundation.

5, surrounding environmental impact: adjacent building construction, underground pipeline laying, road traffic load and other external environmental factors may also have an impact on the foundation, resulting in foundation settlement.

Third, settlement control measures

The non-destructive and controllable soil solidification technology developed by Hengxiang Hongye is an upgrade of the traditional grouting method. The material used in traditional grouting method is mostly cement slurry, which has poor drainage capacity and is prone to secondary settlement after foundation reinforcement. The non-destructive and controllable soil solidification technology uses new materials, 10-30mm small hole micro-innovation process, lightweight equipment, simple and fast operation method, can quickly strengthen the foundation of high-rise buildings and industrial plants, 1-90s consolidation soil, and efficiently complete lifting and tilting.

This technology is especially suitable for complex geology, bad construction environment, unstable construction or it is not easy to dismantle the changing building foundation. Flexible application in soft foundation (silt, silt soil, cohesive soil, etc.), lithologic geology (rock cracks, caves, rock mass, etc.), complex geological conditions (multi-layer strata, high groundwater level, uneven soil, etc.), effectively solve the problem of insufficient foundation bearing capacity, excessive foundation settlement, etc., is the best choice for settlement treatment measures.

To sum up, the causes of foundation subsidence expert are varied, including both natural and man-made factors. In order to prevent and reduce the impact of foundation settlement on buildings, it is necessary to take effective measures and methods in the design, construction and use process. Corresponding treatment measures should be taken in time after the foundation settlement. In the actual project, appropriate foundation reinforcement materials and processes should be selected according to the specific conditions to ensure high economic benefits and save time and labor. We can choose non-destructive and controllable soil solidification technology to effectively strengthen the foundation, with a wide range of applications to ensure that the reinforcement effect meets the design requirements.

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