Many enterprises will encounter the problem of plant ground subsidence, which will affect the production and use of light, and bring security risks. So how to solve the foundation strengthening of the plant, what are the reliable restoration techniques?

First, clarify the cause of settlement

Through professional geological investigation and analysis, understand the geological conditions and characteristics of the foundation, and conduct settlement monitoring and assessment of the plant and its surrounding area, we can find out the root cause of the problem, whether it is the instability of the foundation, soil settlement, or the change of the groundwater level, the use of heavy equipment or other factors, and provide a basis for the subsequent technical solutions for ground settlement remediation.

Second, take emergency measures

After geological investigation and analysis of the cause of subsidence, emergency measures should be taken immediately to prevent further subsidence or damage. For example, stop using the area, set up warning signs, and temporarily support the sinking ground with supports.

3. Land subsidence repair technology

Replacement cushion method: the original soft soil is excavated and replaced with materials with high strength, low compressibility and no erosion.

Application conditions: It is suitable for the treatment of shallow soft foundation and uneven foundation.

Dynamic compaction method: Through repeated rolling or tamping to improve the bearing capacity and stability of the foundation.

Application conditions: Suitable for the treatment of gravel soil, sandy soil, low saturation silt and clay, collapsible loess, mixed fill and plain fill soil and other foundations.

Dynamic compaction replacement method: dynamic compaction replacement method is different from dynamic compaction method, it is the use of heavy hammer high drop generated by high impact can gravel, schist, slag and other good performance materials strongly squeezed into the foundation, in the foundation to form a particle pier, pier and pier soil to form a composite foundation, in order to improve the bearing capacity of the foundation, reduce settlement.

Application conditions: The soil structure will be destroyed in the process of dynamic consolidation, and it is suitable for the engineering of weak deformation control on the foundation of high saturation silt, soft - fluid clay and so on.

Sand and gravel pile method: After the vibration or impact load is used to make holes in the fragile foundation, the sand and gravel are squeezed into the soil to form a large-diameter dense sand and gravel pile to strengthen the foundation.

Application conditions: It is suitable for compacting loose sandy soil, silt, clay, plain filled soil, miscellaneous filled soil and other foundations, and can also be used to treat liquefiable foundation.

Vibroflotation method: The vibroflotation device generates horizontal vibration force, vibrates the packing material and the surrounding soil, and achieves the foundation bearing capacity and reduces the settlement.

Application conditions: Suitable for the treatment of sandy soil, silt, silty clay, plain fill and miscellaneous fill soil and other foundations.

Traditional grouting method: by injecting slurry into the foundation, filling the gaps and cracks in the foundation, so as to improve the density and bearing capacity of the foundation.

Application conditions: Suitable for a variety of complex geological environments, but the use of materials are mostly cement slurry, insufficient strength, easy to lead to secondary subsidence.

Trenchless repair technology: The use of new materials, microhole injection, fast consolidation of soft soil to form a new structure. In the process of filling and compaction, it can effectively strengthen various soil layers, control foundation deformation, and generate upward lift to achieve lifting effect.

Application conditions: simple process, strong operability. Tongcheng soft base surface settlement repair technology can adapt to a variety of complex construction environment, and the equipment is light and easy to carry out work.

In general, ground settlement repair is an important engineering measure that needs to choose the appropriate repair method according to the specific situation, and strictly comply with the requirements of relevant standards and norms to ensure the quality and effect of construction.

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