This paper describes research carried out for the pre-feasibility design of a centerline cyclone sand tailings dam for a Gold-Copper porphyry mine Cyclone sand dams built by the centerline method require (a) sufficient shear strength and (b) free drainage in the cyclone sand
For isotropic materials the relation of Young's modulus, E, and rigidity, G, is G = E divided by 2(1+u) where u = poisson ratio which is generally 0 to 05 depending on material
Uniaxial compression tests Specimens from drill cores are prepared by cutting them to the specified length and are thereafter grinded and measured There are high requirements on the flatness of the endsurfaces in order to obtain an even load distribution Recommended ratio of height/diameter of the specimens is between 2 and 3
A New Era In 3D Scanning Guillaume Bull Creaform’s next generation of portable 3D scanners offers unprecedented speed, accuracy, and ease of use for each stage of your product lifecycle managementIn this interview, Guillaume Bull, Product Manager from Creaform talks to ,
Some Useful Numbers on the Engineering Properties of Materials (Geologic and Otherwise) GEOL 615 Coefficient of sliding friction ( ) For most rocks, varies between 08 and 05 A value of 060 would be a good number for general use Glass on glass 04 Rubber on concrete 075 Steel on steel 055 Angle of internal friction ( Rock 30
Dunnedin Ventures Inc (TSXV:DVI) is advancing its owned copper porphyry projects in British Columbia and Arizona; and the Kahuna diamond project in Nunavut Dunnedin holds the Trapper porphyry project in the northern Golden Triangle region of British Columbia, the MPD project in south-central British Columbia near Princeton and the Mohave copper-molybdenum-silver porphyry project ,
PDF | The point load test (PLT) is intended as an index test for rock strength classification or estimations of other strength parameters because it is economical and simple to conduct in the .
appropriate Is50 to UCS conversion factors for different coal measure rocks The rock strength determined by the PLT, like the load frame strengths that they estimate, are an indication of intact rock strength and not necessarily the strength of the rock mass THE UNIAXIAL COMPRESSIVE STRENGTH TEST The UCS is undoubtedly the geotechnical .
strength of 5158 MPa, while brass was close at 4615 MPa Although relatively brittle, copper’s ultimate tensile strength (3738 MPa) is greater than that of aluminum (2745 MPa) A similar ranking was observed for the metals’ behavior in yielding: steel had the highest yield strength
compressive strength copper ore_Early compressive strength and phase formation of dental amalgam The compressive strength of five different amalgams was measured
The major use for high yield copper is flashing products, where malleability and strength are both important Good resistance to corrosion, good electrical and thermal conductivity, ease of fabrication coupled with strength and resistance to fatigue are criteria by which copper or ,
The tensile strength for different tempers of alloy C26000 are shown in Tables 1 and 2 In general, the addition of alloying elements to copper increases tensile strength, yield strength and the rate of work hardening All three of these properties will affect forming characteristics An example of the effect of alloying is shown in Table 3 .
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mm/min for shear strength test specimens and 05 mm/min in the UCS tests Strength tests were performed on the CPB specimens with different curing times of 3, 7, 14, 28, 56, 112, 224 and 360 days Totally, 216 shear strength specimens and 72 UCS specimens were prepared and cured at 20 ± 1 °C temperature and 80 ± 1% humidity
What is Skarn? Skarn is a metamorphic rock that has been chemically and mineralogically altered by metasomatism Metasomatism is the alteration of rocks by hot, chemically-active fluids that flow or diffuse through the rocks and cause recrystallization and compositional change Skarn commonly forms around the edges of a magma body that intrudes a nearby rock mass
Finally, due to the special characteristics of the UCS spatial variability, it is concluded that the nearest-neighbour method is the most appropriate method for estimating the UCS parameter in porphyry copper deposits Keywords: indicator Kriging, nearest-neighbour, ordinary Kriging, sarcheshmeh copper deposit, uniaxial compressive strength (UCS)
Aug 29, 2012· The Hongshan Cu-polymetallic deposit is approximately 30 km NE of Zhongdian County in eastern Tibet (Fig 1a)The deposit lies within the western part of the Yangtze tectonic Plate adjacent to the north northwest-striking Jinshajiang suture (Fig 1a)The latter is a major shear zone containing a large number of both Triassic Cu–Mo porphyry deposits and Tertiary Cu–Mo–Au porphyry deposits
single-variable and multi-variable back analyses, the shear strength parameters of the rock mass were evaluated Furthermore, the slope failure mechanism was studied using the FDM, and afterward, slope stability design charts were recommended 2 Case study presented in The Teghout mine is a copper and molybdenum open-pit mine
We are a group of independent exploration and mine development consultants with international affiliations Our key strength is our depth of experience, we have worked on a wide range of projects in diverse geographical environments and cover most commoditi
Porphyry is a textural term for an igneous rock consisting of large-grained crystals such as feldspar or quartz dispersed in a fine-grained silicate rich, generally aphanitic matrix or groundmassThe larger crystals are called phenocrystsIn its non-geologic, traditional use, the term porphyry refers to the purple-red form of this stone, valued for its appearance
strength shall be appropriate to study the behaviour of the compacted cement-stabilized soft clay  This study is an attempt to understand and evaluate the unconﬁned compressive strength of compacted disturbed cement-stabilized soft clay Three cement/clay ratios were used in this study (5, 10 and 15 %) Different compaction
nesia, is the Batu Hijau gold-rich porphyry copper deposit The Batu Hijau mine was the world’s largest greenfield mining project when it was developed At Batu Hijau, ore containing copper and gold is extracted from an open-pit mine, crushed, then conveyed to the concentrator facility, where it is
The uniaxial compressive strength (UCS) of intact rocks is an important geotechnical parameter required for designing geotechnical and mining engineering projects Obtaining accurate estimates of the rock mass UCS parameter throughout a 3D geological model of the deposit is vital for determining optimum rock slope stability, designing new exploratory and blast boreholes, mine planning .
The relationship between shear strength and tensile strength is characterized by the criteria of plasticity There is a lot of criterias, but the most known and applied in metals are VON MISES and .
Zambia’s Kitumba copper project By M A Habte, A G Smith, G G Grocott and R Bertuzzi, Pells Sullivan Meynink , which included UCS, triaxial strength, direct shear strength, indirect tensile strength, point load strength, petrographic analysis, drilling rate index, Cerchar abrasivity index and slake durability tests , and argillite .
Standard Test Method for Unconﬁned Compressive Strength of Intact Rock Core Specimens1 This standard is issued under the ﬁxed designation D 2938; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision
Elastic properties (Young’s modulus, shear modulus, bulk modulus, and Poisson’s ratio) [See Stress strain relationships in rocks for calculations of these properties] Inelastic properties (fracture gradient and formation strength) Elasticity is the property of matter that ,
If the shear-strength limit was exceeded (), then the bond broke in shear, and a shear fracture was generated 32 Parameters of the Numerical Model There is no mining excavation engineering in the Luoboling Copper-Molybdenum mine now, but mine carried out the UCS laboratory test for some rock types in the engineering geological investigation .
The shear modulus is one of several quantities for measuring the stiffness of materials All of them arise in the generalized Hooke's law: Young's modulus E describes the material's strain response to uniaxial stress in the direction of this stress (like pulling on the ends of a wire or putting a weight on top of a column, with the wire getting longer and the column losing height).
The ultimate tensile strength (UTS) is the maximum resistance to fracture It is equivalent to the maximum load that can be carried by one square inch of cross-sectional area when the load is applied as simple tension It is expressed in pounds per square inch