Geotube Installation Guide

‌I. Temporary Storage Yard Construction‌

• Clear surface vegetation prior to grading operations.
• Grade the area with a 0.1% slope from center to periphery for drainage.
• Excavate peripheral drainage ditches and collection sumps.

‌II. Construction Dewatering‌

• Employ sludge pumps to evacuate accumulated water from the work zone.

‌III. Geotextile Tube Filling‌

1. ‌Tube Deployment‌: Manually position geotextile containment tubes.
2. ‌Sludge Extraction‌: Hydraulically dredge bottom sediments using high-pressure water jets (≥100 bar) to fluidize sludge.
3. ‌Pumping Operation‌: Transfer slurry via centrifugal pumps to filling sleeves.
4. ‌Filling Protocols‌:
   • Monitor sediment accumulation at discharge points; adjust sleeve positions dynamically.
   • Implement systematic compaction by foot traffic across tube surfaces to enhance particle rearrangement.
   • Terminate filling at filter cake formation stage to prevent tube rupture (≥90% volumetric capacity).
   • Conduct phased filling: Allow initial dewatering consolidation before subsequent lifts.
5. ‌Survey Control‌: Verify layer elevations against design profiles using real-time topographic surveys.

‌IV. Gravitational Dewatering‌

• Exploit geotextile’s micro-perforations (ASTM D4751) to capture solids while permitting water passage.
• Recycle effluent for repeated filling cycles until achieving maximum permissible tube height (typically 3-5 lifts).

‌

V. Sludge Solidification‌

• Retained fines undergo dewatering and consolidation through:
  • Evaporative drying
  • Particle interlocking
  • Overburden-induced compression
• Maintain closed-loop water reuse throughout cycles.

‌VI. Cured Material Handling‌

• Transport solidified sediment (≥80% solids content) for:
  • Offsite disposal, or
  • Beneficial reuse in embankments/landscaping (per ASTM D7762).

Key Technical Specifications

Execution per Geosynthetic Institute GRI-GT13 & ASTM D4885 standards.