Expansive Soils: Potential Threats and Coping Strategies for Water Well Drilling Rig

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Expansive soils pose hidden threats to su kuyusu sondaj kulesi due to their special engineering properties, requiring cautious handling.

 

Expansive soils are rich in hydrophilic clay minerals, swelling rapidly when wet. During drilling, if water from drilling fluid seeps into expansive soil layers, the swelling creates huge pressure on the borehole wall, causing diameter shrinkage that hinders normal drill tool movement—and even jams the tool in severe cases. When expansive soils lose water, they shrink and crack, destroying borehole wall stability and triggering collapse. Moreover, uneven expansion and shrinkage of expansive soils can destabilize the drill foundation, affecting equipment operation.

Bx-300S-Type-Circulation-Expansion-Slide-Bar-Water-Well-Drilling-Rig

To address threats from expansive soils:

 

  1. Strictly control the fluid loss of drilling mud, using low-fluid-loss mud to reduce water seepage into expansive layers.
  2. Conduct detailed surveys on expansive soil distribution and properties before drilling to formulate a reasonable drilling plan. Prepare reaming tools in advance for potential borehole shrinkage, performing reaming when necessary.
  3. Strengthen borehole wall stability via chemical reinforcement (e.g., injecting cement slurry) to improve expansive soil strength. Reinforce the drill foundation with suitable forms and materials to prevent tilting or displacement caused by soil deformation.water well drilling rig

 

These comprehensive strategies enable water well drilling to effectively tackle challenges from expansive soils.