Introduction to Common Issues in Compaction Grouting Construction

Common issues with the dynamic compaction method construction include:

1. Excavation Bumps: This issue can arise during piling when groundwater levels are high or the soil is soft, making it difficult for mechanical operators to work underground. It can also impact the quality of backfill structures and the safe use of equipment. To address this, properly arranging the positioning and number of impacts of a vibration plate compactor is essential, as well as conducting regular horizontal measurements to maintain a level surface condition. 2. rebound phenomenon: Inadequate foundation reinforcement depth can cause this effect. It is important to minimize the damaging impact of overnight compaction holes on the working surface elevation, and avoid heavy continuous rolling at the same spot to ensure compaction effectiveness. 3. Wet settlement issues: Omissions in treatment or new sinkages after the demolition of existing buildings can lead to significant differences in bearing capacity compared to surrounding areas. This, combined with high water content in the compacted foundation, makes it difficult for geological investigation reports to accurately detect relevant information. Prevention and treatment are necessary, along with concerns over uneven settlement and other issues. Construction personnel need to adopt appropriate countermeasures based on specific situations to ensure effective quality improvements.