Crawler Dynamic Compaction Machine

Compaction energy in t·m is the quickest proxy for how deep you can treat. Around 350 t·m (YTQH350CS) treats loose fill to roughly 4–6 m for light buildings and roads. Move to 450 t·m for 6–8 m treatment and 750 t·m (YTQH750CS / YTQH750HE) for the 8–10 m depths typical of port yards, runways and heavy plant foundations. Oversize energy wastes money; undersize it and the fill at depth never densifies.

Choose the diesel YTQH350CS / YTQH750CS for remote land reclamation and quarry sites where noise does not matter. Choose the range-extended electric YTQH750HE where the project sits near a town, a hospital or an environmentally sensitive boundary — same 750 t·m energy, lower noise, zero local exhaust, and an on-board range extender so it still works without a charge pad.

Dynamic compaction is soil-specific. Run a test pad first to confirm drop count, square-grid spacing and the depth of tamper crater for your fill. We supply the operating parameters and quality-control method from that test, so the full-area campaign starts from proven numbers instead of guesswork.

Runways demand flat, even settlement over a long strip. Recommended class: 600–750 t·m rigs for deep fill under the pavement, with a test strip to set drop counts.

Reclaimed ground under container gantries cannot settle. Recommended class: YTQH750CS or YTQH750HE for the deep, heavy-duty treatment the yard slab and rail require.

Factory floors and equipment pads need uniform bearing capacity. Recommended class: 350–450 t·m machines for the shallower fill under light and medium structures.

Bridge approaches settle bumpily if the fill is loose. Recommended class: 450 t·m machines to densify the embankment and approach fill before paving.

Near built-up areas the noise and exhaust matter. Recommended class: range-extended electric YTQH750HE so the tamping campaign meets local environmental limits.

The YTQH series ranges from about 350 t·m on the YTQH350CS through 450 t·m and up to 750 t·m on the YTQH750CS and the range-extended electric YTQH750HE. Higher t·m treats deeper fill; lower energy suits shallow, lighter improvement.

Depending on energy level and soil, treatment depth runs roughly 5 to 10 m, and beyond with 600 to 750 t·m. A trial test section first confirms the drop count, grid spacing and final bearing capacity for your fill.

A vibratory roller only densifies the top 0.3 to 1.0 m in lifts and requires the fill to be placed and rolled layer by layer. Dynamic compaction drops a heavy weight from height, sending a stress wave through the full loose fill in one pass, so it treats deep fill far faster and without multi-layer placement.

It works well on loose granular fill, gravel, sand, collapsible loess and miscellaneous fill. Very soft saturated clay needs prefabricated vertical drains first to let water escape. A site investigation and test pad are recommended.

Typical uses are airport runways, port container yards, industrial plant foundations, highway embankments, reservoir dams and large land reclamation, where the ground must settle before structures are built on it.

The YTQH750HE delivers the same 750 t·m energy as the diesel model but with lower noise and zero local exhaust at the work point, which matters on urban-perimeter or environmentally sensitive sites. It keeps working where charging is limited because the range extender tops the battery.

The standard warranty is 12 months. We ship the full export document set, offer on-site commissioning and tamping-parameter advice, and answer technical queries within 48 hours by the export engineering team.