In gravel layers rich in groundwater,
sand gushing often occurs during construction,
causing hole wall collapse,
ground settlement,
and threatening construction safety and the surrounding environment.water well drilling rig
To handle sand gushing, combine dewatering with grouting. First, arrange dewatering wells around the construction area to lower the groundwater level and reduce pressure on the gravel layer. Meanwhile, grout the gushing areas with cement-sodium silicate double-fluid grout to quickly solidify the gravel and block sand channels.
- Increase mud specific gravity and viscosity to form a thicker mud cake, preventing sand from entering the hole.
- Strengthen monitoring of sand gushing points during construction and take timely measures.
- Prevent the expansion of sand gushing by adjusting dewatering intensity and grouting parameters as needed.water well drilling rig
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