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Double Boom rock Drilling Rigs For Tunnels , Underground Mines

Precision Articulated Drilling — Engineered for Tough Underground Environments

The TZ2S double-arm rock drilling rig is a high-performance, articulated-frame tunneling solution designed specifically for demanding underground mining and civil tunneling applications. Built with industrial-grade reliability, it integrates an energy-efficient low-emission engine, wet dual-circuit emergency braking, and a three-level anti-jamming hydraulic drilling system to maximize uptime and minimize tool wear.

With a maximum operating range of 104 m², adjustable thruster configurations (3.3–5.2 m single-hole depth), and parallel-precision drill booms, the TZ2S delivers consistent accuracy at the tunnel face — even in confined or irregular profiles.

Key Advantages

  • Articulated frame design enables agile steering in narrow tunnels and complex mine layouts
  • Three-level anti-jamming & auto-retraction hydraulic drilling system reduces bit loss and boosts penetration rate
  • Wet dual-circuit emergency braking + spring-applied/hydraulic-released parking brake for certified underground safety
  • 104 m² max operating range (expandable from 90 m² with boom extension section)
  • International-grade electrical protection suite: ground fault, phase sequence, motor thermistor, and engine fault alarms
  • Lightweight aluminum alloy thruster with optimized hose management — extends hose life and cuts maintenance frequency

Applications

  • Primary excavation and advance drilling in road & rail tunneling projects
  • Development and production drilling in hard-rock underground mines
  • Drift, crosscut, and raise drilling in confined mine environments
  • Pre-split and contour drilling for controlled blast profiles
  • Ductwork installation support and utility tunneling operations
  • Underground infrastructure rehabilitation and enlargement works

Technical Specifications

Drilling Depth (Single Hole)3.3 – 5.2 m
Max Operating Range104 m² (with optional boom extension)
Frame TypeArticulated hydraulic steering
Braking SystemWet dual-circuit service brake; spring-applied/hydraulic-released parking brake
EngineLow-emission, energy-efficient diesel engine
Hydraulic Protection3-stage anti-jamming, anti-runaway, automatic retraction
Electrical SafetyGround fault, phase sequence, overload, thermistor, and engine fault protection

FAQ

Is the TZ2S compatible with standard tunnel ventilation and power systems?
Yes — designed for Class I, Zone 1 underground environments; meets ATEX/IECEx electrical safety standards and operates on standard 660V/1140V AC or 24V DC auxiliary systems.
What thruster options are available, and how do they affect drilling depth?
Four interchangeable thrusters cover 3.3 m, 4.0 m, 4.7 m, and 5.2 m single-hole depths. Selection is based on tunnel profile and rock hardness — all mount on the same square-section boom interface.
What is the typical lead time, and can urgent orders be expedited?
Standard lead time is 20 working days after T/T deposit confirmation. Expedited builds (12–15 days) are possible with prior agreement and capacity check.
Does the rig include OEM-certified rock drills, and what brands are supported?
Standard configuration includes imported high-torque rock drills with super anti-bending capability. Compatible with COP, RPD, and Boomer-style mounts; custom integration with Atlas Copco, Sandvik, or Mincon drills available upon request.
How is quality assurance handled before shipment?
Each unit undergoes 72-hour integrated functional testing: hydraulic cycle validation, brake force calibration, electrical fault simulation, and full boom trajectory verification — with signed QA report and video evidence provided.

Detailed Description

MOQ:1PCS
Price:Price negotiations
Standard Packaging:wooden box package
Delivery Period:20 workday
Payment Method:T/T
Supply Capacity:1+PCS+20 workday


Double boom drilling rigs for tunnels, underground mines

Product introduction of drilling rig

TZ2S double-arm rock drilling rig is mainly used for tunneling, underground mines and other underground works in tunnels and tunnels. , duct work, etc. The energy-saving, environmentally friendly, low-emission engine is used for the trolley to move around, and the braking system uses wet dual-circuit emergency braking; the parking brake adopts spring braking and hydraulic release, which makes the work safer. Adopt articulated frame, flexible steering; hydraulic drilling system has three-level anti-jamming, anti-air drilling and other functions, which can effectively improve drilling efficiency and reduce drilling tool loss; electrical system is designed with ground fault protection, phase sequence protection, oil return Complete protection mechanisms such as blockage alarm, motor thermistor protection, overload protection, etc.; can be equipped with four different thrusters, covering the single drilling depth range of 3.3m~5.2m; the drill boom can be equipped with an extension section, the maximum operation The range can be extended from 90㎡ to 104㎡.


Main technical highlights of the product

Rock drill
The imported rock drill has the characteristics of super anti-bending ability, high drilling speed and low drilling tool loss, which effectively improves the adaptability of tunnel edge drilling.
thruster
Light aluminum alloy beam, high-efficiency bending, torsion and fatigue resistance, long service life. The unique single-layer arrangement of the hose reel, combined with the reliable pipe clamp structure, has good hose tensioning performance, effectively prolonging the life of the hose and reducing the maintenance intensity;

Drill boom
The drill arm is kept in parallel in all directions, and the positioning is fast and accurate; the square structure has high strength and good shock absorption performance;

Drilling system
It has the functions of anti-jamming, anti-running and automatic retraction, which can effectively improve the drilling efficiency and reduce the loss of drilling tools;

Hydraulic system
The auxiliary action of the outrigger and ceiling light adopts the electronic control design, the pipeline is simplified, and the maintenance is easy;

Electrical System
The electrical components of international famous brands such as Schneider and Siemens are selected, which have high reliability and long service life; they are equipped with protection and alarm functions such as ground fault protection, phase sequence protection, motor overload protection and engine fault alarm.

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