Heavy haul railways demand the highest level of substructure performance. KHEERAN Corporation provides ballast investigation for heavy haul railways using multi-frequency Ground Penetrating Radar (GPR) — delivering continuous, non-invasive condition assessments built for extreme axle load environments. As a result, heavy haul operators can manage ballast deterioration proactively and keep high-capacity corridors running reliably.

Ballast Investigation for Heavy Haul Railways: The Challenge

Heavy haul railways — including iron ore, coal, and grain corridors — subject ballast to far greater loading than standard freight or passenger railways. Furthermore, repeated high-axle-load passes cause rapid ballast particle breakdown. Consequently, fines accumulate quickly in ballast voids, reducing drainage capacity and weakening track support. Moreover, fouled ballast under heavy haul loading generates differential settlement and geometry defects at an accelerated rate.

Continuous GPR Assessment at Operational Speeds

KHEERAN’s IDS SafeRail multi-frequency GPR system maps ballast condition continuously across heavy haul corridors. Furthermore, our hi-rail inspection vehicles operate at track speed — minimising interruption to high-frequency heavy haul train operations. Two 400 MHz ground-coupled antennas profile the substructure at depth. Additionally, one 1 GHz air-coupled antenna detects high-resolution fouling near the surface. Therefore, every metre of your heavy haul corridor is assessed accurately in a single pass.

Prioritised Maintenance for Maximum Uptime

KHEERAN delivers Selig Fouling Index classifications, continuous fouling maps, and maintenance priority rankings specific to your heavy haul corridor. Moreover, critical sections approaching the undercutting threshold are identified clearly. As a result, maintenance teams can schedule interventions during planned access windows — maximising track uptime and minimising the risk of unplanned disruptions. Contact KHEERAN today to discuss ballast investigation for your heavy haul railway.

Engineering Standards for Ballast Investigation on Heavy Haul Railways

KHEERAN’s ballast investigation for heavy haul railways aligns with AREMA engineering standards for heavy haul track design and maintenance. Furthermore, condition classification using the Selig Fouling Index provides a defensible engineering basis for tamping, undercutting, and renewal decisions under extreme axle loads. Additionally, KHEERAN’s GPR assessment methodology accounts for the accelerated fouling rates and increased moisture retention characteristic of heavy haul corridors. Consequently, heavy haul railway operators receive ballast investigation data optimised for their unique operational demands — with maintenance priorities ranked for maximum impact.