Mid-Section Gold / Copper / Polymetallic Mining

Typical Pain Points

Mid-section underground mines — with drift cross-sections ranging from 3×3 m to 4.5×4.5 m and daily capacities between 300 and 1,500 tonnes — represent the workhorse segment of global underground metal mining. The challenge here is rarely a single factor; it is the complexity of balancing multiple variables: tunnel dimensions that vary across different levels of the same mine, ore density that shifts between stopes, and production targets that require coordinated fleet operation rather than standalone machine performance.

A common and costly mistake in mid-section operations is selecting equipment based on maximum cross-section dimensions alone, then discovering the machine cannot access older, narrower development headings or secondary stopes. The result is either underutilized capital equipment sitting idle or expensive redevelopment work to widen legacy tunnels.

Fleet coordination becomes critical at this scale. A mismatched loader-truck pairing — where the loader's bucket capacity does not align with the truck's hauling capacity — creates bottlenecks: the loader waits for trucks to return, or trucks queue at the loading point. Over a year of operation, these efficiency gaps compound into thousands of tonnes of lost production, even when individual machines perform reliably.

Tuoxing Solutions

Tuoxing's mid-section lineup — TC-150 (1.5 m³) and TC-200 (2.0 m³) LHDs paired with TU-8 (8 t) and TU-10 (10 t) underground trucks — is engineered for exactly this operational reality. The TC-150 at 1,638 mm overall width, and TC-200 at 1,840 mm, both fit comfortably within 3-meter-wide tunnels while delivering the breakout force and tramming speed needed for 300–1,500 t/d operations.

The Cummins turbocharged diesel engines — standard across this range with Tier 3 emissions compliance — deliver consistent power output across varying underground ambient temperatures, while the Dana Spicer powershift transmissions provide smooth gear changes under full load without the hesitation that plagues lower-tier drivetrains in start-stop mining cycles. For operations prioritizing ventilation savings or operating in jurisdictions with tightening emissions regulations, battery-electric variants of both models are available.

Fleet coordination is built into the design philosophy, not treated as an afterthought.Our application engineers provide complementary fleet-sizing calculations as part of every proposal, ensuring the loader-truck ratio, passing bay spacing, and cycle times are optimized for your specific mine layout from day one.

Recommended Equipment

Scenario × Model Quick Reference Table

Quickly locate recommended models by tunnel cross-section, ore type, and daily production target. For custom configurations, contact our application engineering team.

Not Sure Which Configuration Fits Your Mine?

Every underground mine has unique geology, tunnel geometry, and production targets. Our application engineering team provides free, no-obligation equipment selection analysis:

1. Share your tunnel cross-section, ore type, and daily capacity target

2. Receive a customized fleet recommendation with cycle-time simulation within 48 hours

3. Optional: online factory tour and reference-customer conversation before any commitment

Contact us: www.tuoxing.com | 48-Hour On-Site Service, Globally