Ground subsidence is a phenomenon where the ground basins or takes up residence due to natural or human activities, resulting in significant damage to buildings, facilities, and the environment. Subsidence can occur due to various factors, including soil compaction, natural settling of sediment layers, mining, coal and oil extraction, and groundwater growing. In this article, we will discuss the methods and techniques used for repairing ground subsidence.

Causes of Ground Subsidence

Ground subsidence can occur due to several reasons, including natural and human-induced factors. Natural causes have the settling of sediment layers, erosion, soil compaction, and soil combination. Human activities that can cause subsidence include groundwater growing, mining, coal and oil extraction, and the construction of large buildings and facilities.

Effects of Ground Subsidence

The effects of ground subsidence can be significant and can lead to severe damage to buildings, facilities, and the environment. Buildings and facilities can become uneven and crack, leading to safety hazards and expensive repairs. Water and sewer water lines can also break or become damaged, leading to water coolant leaks and sewage spills. In addition, subsidence can lead to flooding in low-lying areas, as the land basins and water levels rise.

Methods and Techniques for Repairing Ground Subsidence

There are several methods and techniques used for repairing ground subsidence. The decision of method depends on explanation for the subsidence, the extent of the problem, and the available resources.

Grouting

Grouting is one of the most common methods used for repairing ground subsidence. It involves injecting a mixture of bare concrete and water into the ground to fill voids and support the soil. 地盤沈下の修繕で口コミ評価の高い（株）西川を紹介 The grout hardens and creates a solid foundation for buildings and facilities, preventing further subsidence.

Deep Blocks

Deep blocks are used to resist subsidence in areas with weak or compressible soils. They are created to transfer the burden of a building or facilities to a deeper, more stable layer of soil. Examples of deep blocks include lots, drilled shafts, and piers.

Soil Stabilization

Soil stabilization is used to increase the strength and stability of weak or compressible soils. It involves adding materials such as lime, bare concrete, or fly ash to the soil to improve its load-bearing capacity preventing further subsidence.

Compaction Grouting

Compaction grouting is a method used to support soil and fill voids in the ground. It involves injecting a slurry of bare concrete and water into the soil to fill voids and compact the soil. The process creates a solid foundation that can resist further subsidence.

Treatment Grouting

Treatment grouting is used to support soil and fill voids in the ground. It involves injecting a chemical grout into the soil to fill voids and support the soil. The grout hardens and creates a solid foundation that can resist further subsidence.

Maintaining

Maintaining is a method used to support blocks that have become unstable due to subsidence. It involves extending the walls depth to a more stable layer of soil or adding additional supports to the existing foundation.

Conclusion

Ground subsidence is a severe problem that can have significant effects on buildings, facilities, and the environment. Fortunately, there are several methods and techniques available for repairing and mitigating this problem, including grouting, deep blocks, soil stabilization, compaction grouting, treatment grouting, and maintaining. These methods can help prevent further damage and ensure the long-term stability and safety of buildings, facilities, and the environment. It is crucial to assess the cause and extent of subsidence to determine the appropriate repair method preventing further damage.