
YTQH350CS-1 Dynamic Compaction Machine
YTQH350CS-1 Dynamic Compaction Machine manufactured by Yutong Heavy Industries.
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The Hydraulic Dynamic Compaction Machine is a crawler-mounted ground improvement machine designed for deep dynamic compaction treatment. With its heavy drop weight and tall leading, it effectively consolidates loose fill, collapsible loess, and saturated soft clay, improving bearing capacity and reducing post-construction settlement for infrastructure projects ranging from highways to industrial foundations.
The machine drops a 17.5 t tamper from up to 25.7 m to deliver 350 t.m of compaction energy per drop. The repeated stress wave reaches deep into loose fill and collapsible loess, densifying layers that rollers cannot touch.
Treatment depth reaches well beyond static rollers, consolidating loose fill, collapsible loess and saturated soft clay in place—no cut-and-replace, no costly deep pile grid.
The wide-track crawler chassis (3360–4830 mm track) supports high-energy drops without vibration transfer, and deployable outriggers lock the machine down at maximum energy.
Yutong dynamic compactors have treated airport runways, port terminals, industrial parks, highway embankments and reservoir dams, where bearing capacity and settlement control decide project success.
| Tamping energy level (t.m) | 350 |
|---|---|
| Allowable hammer weight (t) | 17.5 |
| Chassis track (mm) | 5090 |
| Chassis width (mm) | 3360 (4520) |
| Creeper tread width (mm) | 760 |
| Boom length (m) | 19-25 |
| Maximum lifting height (m) | 25.7 |
| Working radius(m) | 6.3-14.5 |
| Lifting pulling force(t) | 14 |
| Lifting speed (m/min) | 0-118 |
| Gradeability(%) | 40% |
| Travel Speed (km/h) | 0-1.3 |
| Rotating speed (km/min) | 0-2.3 |
| Operating angle(°) | 60-77 |
| Engine power (KW) | 179 |
| Rated speed of engine (r/min) | 2000 |
| Overall weight (t) | 54 |
| Weight of balancing weight (t) | 18.9 |
| Main machine weight (t) | 31.9 |
| Main machine dimension (mm) | 7025X3360X3200 |
| Grounding pressure (Mpa) | 0.073 |
| Tamping energy level (t.m) | 450 |
| Allowable hammer weight (t) | 23 |
| Chassis track (mm) | 5300 |
| Chassis width (mm) | 3360 (4830) |
| Creeper tread width (mm) | 800 |
| Boom length (m) | 19-25 |
| Maximum lifting height (m) | 25.8 |
| Working radius (m) | 6.5-14.6 |
| Lifting pulling force (t) | 14 |
| Lifting speed (m/min) | 0-106 |
| Gradeability (%) | 40% |
| Traveling Speed (km/h) | 0-1.67 |
| Rotating Speed (km/min) | 0-1.78 |
| Operating Angle(°) | 60-77 |
| Engine power (KW) | 220 |
| Rated speed of engine (r/min) | 2100 |
| Overall weight (t) | 67 |
| Weight of balancing weight (t) | 21 |
| Main machine weight (t) | 38 |
The hydraulic dynamic compaction machine is for deep ground improvement: it consolidates thick layers of loose fill, collapsible loess and soft clay in place, raising bearing capacity and cutting post-construction settlement. It is chosen when a roller cannot reach the required depth and cut-and-replace would be too slow or expensive.
Typical projects include airport runways and aprons, port backfill, industrial park foundations, highway embankments and water-retaining dams—works where the fill is deep, the ground is problematic, and the structure demands predictable settlement over decades.
Compared with vibro-replacement or pile foundations, dynamic compaction treats large areas quickly and at lower unit cost. Yutong engineers advise on tamping energy, drop pattern and grid spacing to match your soil profile, and support the machine through the project.

YTQH350CS-1 Dynamic Compaction Machine manufactured by Yutong Heavy Industries.
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YTQH750CS Dynamic Compaction Machine manufactured by Yutong Heavy Industries.
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It is rated at 350 t.m tamping energy, dropping a 17.5 t tamper from up to 25.7 m, giving deep dynamic compaction well beyond conventional roller treatment.
Loose fill, collapsible loess, loose sand and saturated soft clay are the target soils; the machine densifies them in place without excavation and replacement.
Treatment depth exceeds static rollers significantly and is set by tamping energy and drop pattern; tell us the fill thickness and soil profile and the engineers will design the pattern.
Dynamic compaction delivers point energy in deep, thick problem layers; the impact roller compacts large horizontal areas quickly at shallower depth. They are often used together—impact roller first, then dynamic compaction where depth demands it.
Airport runways, port backfill, industrial parks, highway embankments and reservoir dams where settlement control over deep fill is critical.
High-energy drops produce vibration; Yutong advises on exclusion distances and monitoring near existing structures, and can stage the programme to manage it.