KIEPERSOL MINE PIET RETIEF - HAUL ROADS. Marketing Material Kiepersol.pdf · KIEPERSOL MINE PIET...
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KIEPERSOL MINE PIET RETIEF - HAUL ROADS. PROJECT OVERVIEW. A coal export mine under construction in the Piet Retief area is connected to a Provincial Road by an un-surfaced road (some 17kms and with a substantial clay content) which is subject to storm damage and flooding. Interlink trucks with a payload of 60 tons use this road for continuous hauling (a fleet of some 15 trucks) of coal to the Piet Retief railhead on the Richards Bay Coal Export rail. During the rainy season this unpaved road needs continuous grading and extensive repair and often becomes dangerous and unserviceable. The Owners - Jindal Mining Africa - commissioned Global Civil Solutions to design a road which in the initial stages will be stabilized but un-surfaced with the intention to tar the roadway once the cash flow from this mine is self-sufficient. PROJECT MODUS OPERANDI. Phase one was constructed at the primary haul section (200 trucks per day) which consists of a 250mm in-situ material layer stabilized with 4% ANSS. This was executed during the rainy season of 2009 / 2010. The road is now in the second rainy season and has performed exceptionally well under the harsh environment – it has been maintenance free and constantly trafficable. SAVINGS USING ANSS OVER ALTERNATIVE DESIGNS. • Overall cost saving of 30% on alternative methods. • Time saving of 70% on road construction. • Using ANSS design, layer thickness was reduced from 600mm to 250mm. ENVIRONMENTAL SAVINGS. • Ongoing CO2 emissions saved (Global environmental impact.)
Transcript of KIEPERSOL MINE PIET RETIEF - HAUL ROADS. Marketing Material Kiepersol.pdf · KIEPERSOL MINE PIET...
KIEPERSOL MINE PIET RETIEF - HAUL ROADS.
PROJECT OVERVIEW.
A coal export mine under construction in the Piet Retief area is connected to a Provincial Road by an
un-surfaced road (some 17kms and with a substantial clay content) which is subject to storm damage
and flooding.
Interlink trucks with a payload of 60 tons use this road for continuous hauling (a fleet of some 15
trucks) of coal to the Piet Retief railhead on the Richards Bay Coal Export rail.
During the rainy season this unpaved road needs continuous grading and extensive repair and often
becomes dangerous and unserviceable.
The Owners - Jindal Mining Africa - commissioned Global Civil Solutions to design a road which in the
initial stages will be stabilized but un-surfaced with the intention to tar the roadway once the cash
flow from this mine is self-sufficient.
PROJECT MODUS OPERANDI.
Phase one was constructed at the primary haul section (200 trucks per day) which consists of a
250mm in-situ material layer stabilized with 4% ANSS.
This was executed during the rainy season of 2009 / 2010.
The road is now in the second rainy season and has performed exceptionally well under the harsh
environment – it has been maintenance free and constantly trafficable.
SAVINGS USING ANSS OVER ALTERNATIVE DESIGNS.
• Overall cost saving of 30% on alternative methods.
• Time saving of 70% on road construction.
• Using ANSS design, layer thickness was reduced from 600mm to 250mm.
ENVIRONMENTAL SAVINGS.
• Ongoing CO2 emissions saved (Global environmental impact.)
CBR @ % MOD
AASHTO
Platform Natural Platform with 2% ANSS
95 25 200 (lab. tested)
98 37 260 (lab. tested)
CBR @ 40 days
@98% MODAASHTO
98
Average CBR
134
TRH 14 classification G6 G4
UNSTABILZED ROAD DRY CONDITIONS.
Course Grading Modulus (%)
PI (%)
TRH 14 Classification
MDD (kg/m3)
OMC (%)
25cm road 2.4 12 G6 2124 11.1
SOIL CHARACTERISTICS FOR KIEPERSOL
IMPROVEMENT IN ENGINEERING CHARACTERISTICS USING ANSS
STABILIZED ROAD IN WET CONDITIONS, AFTER CONSTANT USE.
