Hydraulic Tunneling Drill Rig for Coal Mines

CMJ1-18Y Hydraulic Tunneling Drill Rig for Coal Mines

  1. Drilling speed can be increased by approximately 2 times: By using a hydraulic rotary (torque: 520 Nm) + hydraulic impact (power: 18 kW) rock drill, when drilling roof blasting holes in rock with a hardness of f>14, the drilling speed can be increased by approximately 2 times (rock drilling speed: 800 mm/min) compared to a single hydraulic rotary drill (which may encounter drilling difficulties and low drilling efficiency).
  2. The drill bit is resistant to impact and wear: The use of a column-tooth impact drill bit, which is resistant to impact and wear, results in less consumption of the drill bit and lower drilling costs compared to the diamond drill bit equipped in a single hydraulic rotary drill when drilling into harder rock formations.
  3. Used for the construction of roof cutting holes in rocks with a hardness of f>14 and a drilling depth of 0-25m.
  4. Low operating noise, tracked travel, maneuverable and flexible, strong climbing ability.
  5. Safety risk factor of 0: Remote control operation (remote control distance > 50 meters) is adopted for hole and drilling operations, with operators operating the equipment away from the danger zone.
  6. Pioneering both domestically and internationally: applying impact drilling to the “110 method” for the construction of roof cutting blast holes under conditions where the rock hardness (f) exceeds 14.
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CMJ1-18Y Hydraulic Tunneling Drill Rig for Coal Mines

The CMJ1-18Y hydraulic tunneling drill rig for coal mines is specifically developed for efficient roof cutting and blasting hole construction in underground coal mine roadways. It is designed to operate reliably in hard rock conditions where rock hardness exceeds f>14, addressing the limitations of conventional single hydraulic rotary drilling equipment.

High-Efficiency Hydraulic Rotary and Impact Drilling System

This hydraulic tunneling drill rig for coal mines integrates hydraulic rotary drilling with hydraulic impact rock drilling. The system delivers a rated rotary torque of 520 N·m combined with an impact power of 18 kW, enabling stable and efficient penetration in high-hardness rock formations. When drilling roof cutting blast holes under f>14 conditions, the drilling speed can be increased by approximately two times compared with single hydraulic rotary drills, reaching a drilling speed of up to 800 mm/min. This significantly improves construction efficiency while reducing downtime caused by difficult drilling conditions.

Impact-Resistant and Wear-Resistant Drill Bit Configuration

The CMJ1-18Y adopts a column-tooth impact drill bit, which offers excellent resistance to impact loads and abrasive wear. Compared with diamond drill bits typically used on single hydraulic rotary drill rigs, this configuration shows lower bit consumption and reduced drilling costs when operating in hard rock strata, while maintaining consistent drilling performance.

Designed for Roof Cutting Hole Construction in Hard Rock

This hydraulic tunneling drill rig for coal mines is suitable for drilling depths from 0 to 25 meters and drilling diameters ranging from φ64 to 89 mm. It is specifically engineered for roof cutting hole construction in hard rock environments, supporting advanced roof control techniques and improving roadway stability in coal mines.

Compact Structure, Flexible Mobility, and Low Noise

The rig features a compact overall structure with tracked travel, providing strong maneuverability in narrow underground spaces. Its excellent climbing ability allows it to adapt to complex roadway conditions. Low operating noise improves the underground working environment and supports long-duration operations.

Remote Control Operation for Enhanced Safety

To minimize operational risks, the CMJ1-18Y hydraulic tunneling drill rig for coal mines is equipped with a remote control system for drilling and hole positioning operations. With a remote control distance of more than 50 meters, operators can control the equipment from outside the hazardous area, greatly improving safety during drilling operations.

Innovative Application in Advanced Mining Methods

The CMJ1-18Y represents a pioneering solution both domestically and internationally by applying impact rock drilling technology to the “110 method” for roof cutting blast hole construction. This innovation enables effective drilling in rock conditions with hardness exceeding f>14 and provides reliable technical support for modern coal mine roadway control.

Technical Specifications

Name Unit Technical Specification
Number of drilling booms pcs 1
Overall dimensions (L × W × H) mm 4500 × 1200 × 2550
Drilling diameter mm φ64–89
Penetration depth m 0–25
Drilling speed mm/min 800
Machine weight kg 9165
Remote control distance m ≥50
Impact power kW 18
Rated torque N·m 520
Lateral movement stroke of drilling boom mm 620
Drilling boom pitching angle ° Front 10 / Rear 80
Feeder rotation angle ° ±90
Total power kW 55

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