Diaphragm Wall
Deep Excavation & Retaining Wall Specialists
Jalmala Boring Works specializes in Diaphragm Wall Construction for deep excavations, basements, metro projects, commercial developments, and industrial infrastructure. We execute complete diaphragm wall work from 400 mm to 1200 mm thickness and depths of up to 40 metres, delivering watertight, high-strength retaining walls with minimal ground movement. Our end-to-end solution includes guide wall construction, slurry-supported panel excavation, reinforcement cage installation, tremie concreting, water-stop systems, and quality-controlled execution.
Diaphragm WallConstruction Process
A step-by-step overview of how Jalmala Boring Works constructs high-quality Diaphragm Walls — from guide wall installation to final panel completion — with precision, safety, and six decades of expertise.
Survey, Setting Out & Guide Wall Construction
Detailed survey, panel marking, and guide wall construction for accurate alignment.
- Detailed survey and panel layout marking
- Construction of reinforced concrete guide walls
- Establishes accurate wall alignment
- Supports excavation equipment
- Prevents top soil collapse during excavation
Slurry Preparation & Panel Excavation
Preparation of slurry and excavation of diaphragm wall panels.
- Preparation of bentonite/polymer slurry
- Excavation using Hydraulic Grab or Hydromill
- Continuous slurry circulation for stability
- Excavation to required depth and founding strata
- Regular monitoring of depth and verticality
Joint Formation & Trench Cleaning
Formation of watertight joints and cleaning of excavated trench.
- Installation of Stop-End Pipes
- PVC Water Stopper installation
- Formation of watertight panel joints
- Desanding and slurry cleaning
- Removal of sediment from trench bottom
- Final trench inspection
Reinforcement Cage Installation
Fabrication and placement of reinforcement cage into trench.
- Fabrication as per approved drawings
- Installation of spacers and couplers
- Lowering cage into slurry-filled trench
- Maintains required concrete cover
- Pre-concreting quality inspection
Tremie Concreting
Continuous concrete placement using tremie pipes.
- Installation of tremie pipes
- Concrete poured from bottom to top
- Displacement and recovery of slurry
- Single uninterrupted concreting operation
- Formation of reinforced concrete wall panels
Panel Completion, Quality Control & Wall Formation
Final wall formation, testing, and quality assurance activities.
- Removal of stop-end elements
- Construction of secondary panels
- Formation of continuous watertight wall
- Verification of alignment and thickness
- Concrete quality testing and records
- Wall head trimming for capping beam