As Oman speeds up the construction of photovoltaic and green hydrogen projects, the demand for high-efficiency construction equipment for pile foundation engineering is growing rapidly. As core pile foundation equipment, the rotary rig machine stands out as the top choice for Oman’s renewable energy projects thanks to its hydraulic drive power and strong adaptability to various geological conditions.
It drives drill pipes to rotate and cut soil and rock via the power head, and completes hole-forming for pile foundations efficiently through cyclic soil collection with drilling buckets. Integrating mechanical, hydraulic, and electric control technologies, it perfectly adapts to local clay, sand, and gravel-containing strata in Oman, delivering reliable construction support for photovoltaic power stations, green hydrogen plants, and other projects.【WhatsApp/WeChat/Phone】+86 13837122632
Rotary Piling Machine Parameters
YG-30
| Item | Unit | Data |
| Max. Drilling Diameter | mm | 1800 |
| Max. Drilling Depth | m | 30 |
| Engine Model | / | Cummins, GBT5.9-C210 |
| Rated Power | kW | 154KW, 2200r/min |
| Max. output torque of Rotary Head | kN·m | 100 |
| Rotary speed | r/min | 17-40 |
| shturl.cc/AlH piston push of Oil Cylinder | kN | 110 |
| shturl.cc/AlH piston pull of Oil Cylinder | kN | 100 |
| shturl.cc/AlH piston stroke of Oil Cylinder | mm | 2000 |
| shturl.cc/A force of Main Winch | kN | 100 |
| Max. single-rope speed of Main Winch | m/min | 70 |
| Diameter of the steel wire rope (Main Winch) | mm | 28 |
| shturl.cc/A force of Auxiliary Winch | kN | 60 |
| Max. single-rope speed of Auxiliary Winch | m/min | 54 |
| Diameter of the steel wire rope (Auxiliary Winch) | mm | 16 |
| Max. traveling speed | km/h | 2.6 |
| shturl.cc/ clearance | mm | 340 |
| Approach angle | ° | 21 |
| Departure angle | ° | 18 |
| shturl.cc ability | % | 30 |
| Overall Weight | t | 28 |
| Transportation Dimension (L×W×H) | mm | 11000×2600×3400 |
YG-180
| Item | Unit | Value | Item | Unit | Value |
| shturl.cc/tv Diameter | mm | 2000 | Maximum flow | ml/r | 110 |
| shturl.cc/tv Depth | m | 25 | Overall Drilling Weight | t | 11.6 |
| Maximum pulling force | t | 8.6 | Dimension | m | 10.0×2.3×3.2 |
| Rotary table slewing angle | ° | 180° | Front track | mm | 1840 |
| Rotary Drive Rotary speed | r/min | 20-40 | Rear wheel | mm | 1800 |
| shturl.cc/q4U speed | km/h | 60 | Engine Model | / | 6105 intercooled turbocharged engine |
| Working pressure | Mpa | 25 | Rated speed | r/min | 2200 |
| Rotary Drive shturl.cc/ torque | Kn.m | 30 | Engine power | kw | 103 |
| Driving form | / | 2 |
Case 1: Pile Foundation Construction Project of Central Oman Photovoltaic Power Station
Project Background: This is a large-scale ground photovoltaic power station project in central Oman. The construction site is mainly covered with loose sand soil and shallow gravel soil, where hole collapse happens easily. With tight construction schedule, continuous and stable equipment operation is required to finish the construction of large quantities of photovoltaic support foundation piles.
Customized YG Equipment Solution: The client purchased multiple wheel-type YG-180 rotary rig machines, matched with rotary drilling buckets and sand grab buckets to prevent hole collapse and finish soil extraction in sand layers. Meanwhile, mud circulation systems, precise measuring devices, and emergency generator sets were purchased to ensure smooth field construction in all aspects.
Cooperation Process: The client found our official website via Google search. During communication, they mainly inquired about the equipment’s high temperature resistance performance and construction schemes for sand strata. We provided complete construction suggestions based on local actual geological conditions in Oman, and introduced the easy operation advantage of square rod drilling rigs to eliminate their operation worries. Finally, we reached a deal and completed full-container equipment export.
On-site Application Effect: The equipment features flexible transition and stable hole-forming speed, which effectively avoids sand soil collapse. Relying on stable working performance, all pile foundation construction tasks were completed ahead of schedule, winning full recognition from the client.
Case 2: Civil Building Pile Foundation Project in Oman Urban Area
Project Background: Located in downtown Oman, the project has narrow construction sites dominated by clay soil and partially highly weathered rock strata. The construction depth varies greatly, requiring fast shallow hole drilling capacity as well as hard rock drilling performance.
Customized YG Equipment Solution: A crawler-type YG-30 rotary rig machine was selected for this project, equipped with spiral drilling buckets and core drilling buckets respectively for anti-sticking construction in clay and drilling in hard weathered rock strata. Auxiliary facilities, including small hoisting equipment and concrete pouring equipment were fully equipped to offer one-stop complete construction sets.
Cooperation Process: The client is a well-established local engineering contractor in Oman, who contacted us actively recommended by our long-term cooperative partners. During negotiation, we elaborated on the deep pressure construction advantages of interlocking rod drilling rigs and safety protection functions of the winch pressure system. We successfully sealed the deal with comprehensive overseas after-sales services.
On-site Application Effect: The equipment can switch high and low torque modes flexibly. No bucket blockage occurs in clay layers, and its drilling efficiency in weathered rock is far higher than that of traditional machines. Low overall failure rate greatly cuts labor cost and shortens construction period, making it a benchmark construction equipment for local urban projects.
FAQs about Rotary Rig Machine
1. What are the core components of a rotary piling rig?
Chassis & Traveling Mechanism: Crawler or wheeled chassis, realizing whole machine movement and stable support during construction.
Power System: Generally, a diesel engine provides a hydraulic power source for the whole machine.
Hydraulic System: Consisting of the main pump, control valve group, oil cylinders, and motors, serving as the core power source for rig movements.
Working Devices: Power head: Provides rotary torque and rotating speed.Drill pipe: Friction rod or interlocking rod, transmitting torque and pressing force.Drilling tools: Drilling bucket, spiral drill, core drill, and others for direct soil and rock cutting.
Winch System: The main winch lifts drill pipes and drilling tools; the auxiliary winch is used for auxiliary equipment hoisting. Other auxiliary parts include cab with electric control system, luffing mechanism and slewing bearing.
2. What is the construction process of the rotary piling rig?
The standard construction process includes 8 steps:
- Survey and positioning: Confirm pile center points with a total station and make marks.
- Rig positioning: Move the rig to align the drill bit with the pile position and adjust verticality.
- Drilling start: Start the power head, lower the drill pipes slowly, and cut through the soil layers.
- Lifting drill and soil discharging: Lift drilling buckets out of holes when full, discharge soil via the bottom cover or vibration.
- Repeated drilling: Repeat drilling and soil collection until reaching the designed hole depth.
- Hole cleaning: Remove hole bottom sediment with sand grab buckets or an air suction dredger (sediment thickness ≤5cm).
- Place steel reinforcement cage and guide pipe: Hoist the steel reinforcement cage into the holes and install the concrete pouring guide pipes.
- Concrete pouring: Pour concrete continuously through guide pipes and pull out pipes slowly to finish pile forming.
3. What are the key vulnerable parts needing priority maintenance of the rotary piling machine?
Based on actual site wear data, focus on the following four parts:
- Drill teeth: Directly contact soil and rock with the fastest wear. Inspect and replace every 8-10 working hours in sand and pebble strata.
- Bottom plate and side teeth of drilling bucket: A worn bottom plate causes soil leakage, while worn side teeth reduce drilling efficiency. Inspect and repair by welding per shift.
- Steel wire rope: The main winch wire rope bears long-term impact load. Replace it once broken wires, flattening, or over 7% diameter reduction appears.
- Hydraulic oil filter: Easy to block in desert and high-dust areas. Replace every 250 working hours to avoid accelerated hydraulic pump wear. Besides, drill pipe key strips and slewing bearing sealing rings need regular inspection as well.
4. How to deal with Borehole Collapse during construction?
Hole collapse often occurs in sand layers, silt layers, or strata with high underground water level.
Solutions are as follows:
Step 1: Stop drilling immediately
Once rapid water level drop inside holes, massive soil falling at hole mouths or abnormal drill pipe shaking are found, lift drills to safe positions and stop forced operation.
Step 2: Judge collapse degree
- Slight collapse (collapse thickness＜30cm): Lower drilling buckets to clear collapsed debris slowly and adjust mud specific gravity to 1.2-1.3 g/cm³.
- Severe collapse: Conduct backfilling. Fill clay or cement slurry 1-2 meters above collapse position, and restart drilling after 24-hour stabilization.
Step 3: Preventive Measures
- Keep the mud liquid level over 1.5 meters higher than the underground water level during sand layer drilling.
- Control the drill lifting speed to avoid the piston effect causing hole wall collapse.
- Place steel casings if necessary, with casing length crossing collapse-prone strata.
Step 4: Collapse after the hole forming before concrete pouring
Clear collapsed substances and re-clean holes if a collapse happens after hole cleaning. Shift positions and re-drill piles if severe collapse cannot be cleared.
From photovoltaic power stations to green hydrogen plants, YG rotary rig machine boosts the implementation of Oman’s energy transformation projects with high efficiency and stable performance. We not only offer targeted geological adaptation solutions, but also supply complete auxiliary equipment and thoughtful after-sales support. Whether the hard stratum breaking capacity of YG-30 or flexible mobility advantage of YG-180, our products can meet diverse engineering demands.
If you have pile foundation construction projects in Oman and need customized rotary digging machine solutions, feel free to contact us to create win-win cooperation in the Middle East market together!
