The Asia Miner

APR-JUN 2019

The ASIA Miner - Reporting Important Issues to Mining Companies in the Asia Pacific Region

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Page 66 of 71

the asia miner • volume 16 • issue 2 65 PRODUCT NEWS Komatsu has released the D375Ai-8 'intelligent' dozer, the company's first mining dozer incorporaঞng its fully integrated intelligent Machine Control system, which delivers proven producঞvity, efficiency and cost-saving benefits. The 72.9 tonne D375Ai-8 is powered by a US EPA Tier 4 Final emission cerঞfied Komatsu SAA6D170E-7 diesel rated at 455 kW in forward gears, and 558 kW in reverse, to provide more reversing power for higher producঞvity. According to Michael Hall, Komatsu Australia's Mining Product Manager, the iMC version of the dozer can carry out both bulk and final trim dozing in fully automaঞc mode from start to finish, delivering final grade performance and accuracy. While this is Komatsu's first mining machine fied with integrated Machine Control, the concept has been successfully used on its smaller and mid-sized dozers across Australia and New Zealand over the past three years. "The concept has been shown to significantly increase producঞvity and efficiency – up to twice as producঞve as dozers fied with 'bolt-on' third party machine control systems according to Australian users and operators – while reducing the cost of each metre of material moved," said Mr Hall. "This will deliver major benefits to mining operaঞons across the board, whether in bulk overburden moving, chasing thin or narrow seams, for mine infrastructure works, for stockpile management, or in rehabilitaঞon projects. "This technology offers significant safety benefits in stockpile applicaঞons with a remote control-ready opঞon available," he said. As well as mining operaঞons, the D375Ai-8 also has applicaঞons in quarrying and heavy construcঞon projects. The D375Ai-8 intelligent dozer incorporates as standard a factory- installed fully integrated Global Navigaঞon Satellite System machine control system, which eliminates the need for coiled cables between machine and blade. "An enhanced sensor package combined with an intelligent logic system provides for high accuracy in a fully integrated system without the need for tradiঞonal blade-mounted sensors that can be subject to damage, the[ or vandalism," commented Mr Hall. Komatsu's integrated Machine Komatsu's new D375Ai-8 intelligent Machine Control dozer Komatsu releases first mining dozer with intelligent machine control Control system automaঞcally controls blade elevaঞon and ঞlt according to target design data, using common industry standard design data so[ware and systems. "With these machines, not only can the automaঞc machine control features be used for final grading but also for bulk dozing – a capability which is unique to Komatsu intelligent dozers," said Mr Hall. Dozing progress can be checked using the integrated as-built mapping display, which collects surface data by conঞnuously measuring actual elevaঞons as the machine operates. This data is also communicated back to the planning so[ware to enabling monitoring of actual material movement by planning and management personnel. Komatsu's intelligent dozer technology is also readily integrated with its SMARTCONSTRUCTION offering, which combines drone-based survey and site management systems and cloud-based informaঞon offerings to design, plan, construct and manage mining, quarrying and construcঞon operaঞons. The new D375Ai-8 is based on the recently released D375A-8, which features a combinaঞon of a fuel- efficient low-emission engine, increased reversing power and enhanced chassis and track frame durability to deliver significantly lower operaঞng costs per metre of material moved. It is powered by a Komatsu SAA6D170E-7 Tier 4-compliant diesel engine that not only greatly reduces emissions compared with previous generaঞon engines, but also reduces fuel consumpঞon through a heavy duty EGR (exhaust gas recirculaঞon) system, a hydraulically driven radiator cooling fan and Komatsu auto idle stop. Producঞon efficiency is enhanced through increasing engine power by 20 per cent when in reverse, reducing cycle ঞme in downhill dozing applicaঞons – the most efficient method of bulk dozing.

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