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THE USE AND INTERPRETATION OF THE DYNAMIC CONE ...

In Australia in 1956, Scala developed a Dynamic Cone Penetrometer (DCP), based on an older Swiss original, to evaluate the shear strength of the material in a pavement 2. This consisted of a 9 kg (20 pound) mass dropping 508 mm (20 inches) and knocking a cone …

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Advances in Mechanical Engineering 2019, Vol. 11(10) 1–25 ...

Mar 19, 2019· metric parameters of the nozzle and the air core dia-meter in a swirl spray pressure nozzle, which indicated a sharp increase in the air core diameter and spray cone angle with an increase in the nozzle flow rate, the orifice diameter, and the swirl chamber cone angle. Yang and Xiang5 designed a nozzle that can be used for

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SOIL PARAMETERS - ia Tech

parameters were estimated using the curves and transformation equations shown in Figure 5.2(b), with emphasis on values measured at cell pressures less than 7 psi. The total stress parameters for the natural soils, determined in this manner, are as follows: Elevation (ft) φ (deg) c (psi) 96.0 38 7.0 92.8 35 6.0 90.5 23 4.7 88.2 28 4.4

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Chapter 9 Embankments - Wa

Chapter 9 Embankments 9 .1 Overview and Data Needed This chapter addresses the design and construction of rock embankments, bridge approach embankments, earth …

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Chapter 5 Engineering Properties of Soil and Rock

Chapter 5 Engineering Properties of Soil and Rock 5 .1 Overview The purpose of this chapter is to identify, either by reference or explicitly herein, appropriate methods of soil and rock property assessment, and how to use that soil and rock property data to establish the final soil and rock parameters to be used for geotechnical design.

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Discrete element modelling of a rock cone crusher

As the simulated operation of the DEM cone crusher with a real geometry is computationally too expensive, the performance of a small scale cone crusher was modelled in this study. The dimensions of the model parameters were determined based on the full scale cone crusher design geometry presented by Lang (1998).

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Analysis of the Rock Failure Cone Size Relative to the ...

The angle value estimated by the CCD method is ~35°, while from the FEM analysis approx. ~24° (depending on the simulation conditions, including in particular embedment depth, rock strength parameters, or Poisson's ratio).

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Surface mining planning and design of open pit mining

Jan 09, 2016· 2.3) Computer Methods As should be appreciated, the manual design of a pit gets the planning engineer closely involved with the design and increases the engineer's knowledge of the deposit. The procedure is cumbersome, though, and is difficult to use on large or complex deposits. Drawback of manual design is that if any of the design ...

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GUIDE TO CONE PENETRATION TESTING - geotecnia.info

a standard electronic cone with a 60-degree apex angle and either a diameter of 35.7 mm or 43.7 mm (10 or 15 cm2 cross-sectional area). Recommendations are provided on applications of CPT data for soil profiling, material identification and evaluation of geotechnical parameters and design. The companion book (Lunne et al., 1997) provides more ...

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Cone Method | Analysis of Uplift | GEO5 | Online Hilfe

Cone Method. The uplift resistance R t combines the footing self-weight and the self-weight of the soil overburden in the shape of a cone as evident from the following figure.. Basis of the cone method . The "Bearing cap." frame in the "Verification on uplift" dialog window serves to input the cone angle α.When calculating the uplift resistance R t it is also possible to account for the ...

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DESIGN OF CYCLONE AND STUDY OF ITS PERFORMANCE …

Section Angle", Thermal Engineering (RETERM). 2. Bernardo S, Mori M and W P Martignoni (2006), "Evaluation of Cyclone Geometry and its Influence on its Performance Parameters by CFD", Powder Tech-nology. 3. Boysan F, Ayers W H and Swithenbank J A (1982), "Fundamental Mathematical Modeling Approach to Cyclone Design", Institute of ...

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Handbook of Geotechnical Investigation and Design Tables ...

Feb 11, 2014· 5.18 Clay parameters from cone penetration tests ... 9.10 Rock strength due to failure angle 9.11 Rock defects and rock quality designation ... 21.23 Design parameters for pipe piles in cohesionless siliceous soils 21.24 Pile interactions 21.25 Influence zone for end bearing piles in sands

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STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES 1 ...

what is the rock mass strength. Knowledge of roc k mass strength is also important in the design of support systems as discussed in the next set of notes with regard to the concept of rock-support interaction. In general, rock mass strength depends on the strength of intact rock and the strength of rock discontinuities.

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Geotechnical Manual: Design Considerations

Standard drawings are developed based on the design parameters for foundation and retained soils of a cohesion of zero, a friction angle of 30 degrees for the retained …

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(PDF) Application of the Dynamic Cone Penetrometer (DCP ...

A practical technique for the compaction control of sand in road construction: using a dynamic lightweight cone penetrometer By Abbas Mohajerani Laboratory Evaluation of the Geogauge and Light Falling Weight Deflectometer as Construction Control Tools

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Correlations of soil and rock properties in geotechnical ...

Jun 01, 2018· The main objective of this book is to provide correlations commonly used by geotechnical practitioners to assess design parameters important in the geotechnical design activities.

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Design Manual Engineering Properties of Soil and Rock

Determination of design parameters for rock should take into consideration the in-situ rock properties ... Typically, the total internal friction angle (ϕ) is negligible and assumed to be zero (ϕ = 0) in cohesive materials. However, if required for the analyses, the undrained (total) ... in-situ methods such as Cone Penetrometer (CPT ...

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Analysis of the Rock Failure Cone Size Relative to the ...

The Concrete Capacity Design (CCD) method approximates that the maximum projected radius of the breakout cone on the free surface of concrete corresponds to the length of at the most three embedment depths (hef). In rock, the dimensions of the breakout prism are found to exceed the CCD recommendations by 20–33%.

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Research Article Optimization Design and Application of ...

the initial design scheme, parameters of bifurcation pipe size model were con rmed. Structure type is shown in Figure . Parameters which can be used as optimization design parameters are half angle of main cone and branch cone 1 2,bifurcationangle,mainconewallthickness 1, and branch cone wall thickness 2 3 (see Figure ).

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San Diego County HYDRAULIC DESIGN MANUAL

San Diego County Hydraulic Design Manual September 2014 County of San Diego Department of Public Works Flood Control Section

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2.6: Soil Mechanical Tests - Engineering LibreTexts

Mar 05, 2021· 2.6.4. Cone Penetration Test. The cone penetration test (CPT) is an in situ testing method used to determine the geotechnical engineering properties of soils and delineating soil stratigraphy. It was initially developed in the 1950s at the Dutch Laboratory for Soil Mechanics in Delft to investigate soft soils.

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Studies and Simulation of the Effect of Design Parameters ...

Sep 20, 2014· The parameters of test specimens were chosen, accounting for the design and dimensions of the most-used teeth of M- and S-type cone drill bits, and the parameters other than those were also employed (Fig. 2).The test specimens were prepared with the tooth widths l = 12.5 and 25 mm, the test portion height h = 26 mm, the cutting-point angle 2γ ...

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Parametric sensitivity analysis of ground uplift above ...

May 15, 2012· The rigid cone model assumes an overburden rock mass above caverns to be a cone shape. According to Littlejohn and Bruce (1975), the cone angle (α) is taken as 30° or 45°. Except for the cone angle, the model does not account for any rock mass strength, so that the rigid-cone concept is very simplistic relative to a real rock mass response.

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Fundamentals of CONE PENETROMETER TEST (CPT) …

• The tip of the cone penetrometer senses out ahead of itself as it induces a local bearing failure of the soil it passes through. • The tip resistance recorded by the instrument is an average across this tip influence zone. • Therefore, caution should be exercised when evaluating insitu strength parameters for horizons less than

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Design of piles – United Kingdom practice

Chris Raison & Derek Egan – Design of piles – United Kingdom practice 4/24 5. DESIGN METHOD ACCORDING TO THE PRINCIPLES OF EUROCODE 7 5.1. General principles In the UK, pile design is carried out in accordance with BS EN 1997-1 and the UK National Annex using Design Approach 1 for the STR and GEO limit states.

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Drilling Bit Introduction and bit Selection (Part 3)

Jul 04, 2018· 5. Geometrical analysis of roller cone bits • Fundamentals of bit design • Basics of cone geometry design • Oversize angle • Offset • Teeth and inserts • Additional design criteria: tooth to tooth and groove clearances and etc. • Cone-shell thickness • Bearings factors • Rock …

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Influence of Convergence Angle on Hollow Cone Spray ...

performance of the atomizer i.e. mean droplet size (Sauter mean diameter), spray cone angle and drop size distribution. Spray cone angle and mean droplet size are the two important performance parameters in a high-pressure swirl atomizer. The spray cone angle …

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Effect of Design Parameters on Oil-Flooded Screw ...

The angle "1!7 is defin~d as the angle of the leading edge of the male cav1 ty and ranges from a negative value at cavity's inception to 8-max = 360 ( 1+1/N ) +SZ'm at cavity's expiration. Unlike the inlet po~t angle, the discharge port angle is a strong function of the number of lobes.

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Review of Post-Peak Parameters and Behaviour of Rock ...

failure. Hence knowledge of the failed or post-peak rock mass parameters is quite important in the design of support for underground openings. In the two-dimensional elasto-plastic finite element program, Phase2, users can currently define both elastic and plastic (i.e., peak and residual) rock mass properties. When an element

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On the theory of ground anchors

11. Parameters related to Marinpol'skii's version of the cone method 13 12. Marinpol'skii's dimensionless function fi vs the angle of internal friction 13 13. Soil boundaries for earth pressure method 14 14. Parameters related to Mueller's version of the earth pressure method 14 15.

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Chamber Optimization for Comprehensive Improvement of Cone ...

Mar 15, 2021· The chamber structure parameters of the cone crusher are the key parameters that affect the performance of the crusher. The bottom angle of the mantle, the length of the parallel zone, the eccentric angle, and the rotating speed are determined as the design variables of the dual-objective programming model, as shown in the following equation:

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Rocket Nozzle Geometries - gatech.edu

Conical Nozzles –Design Tradeoff • Shorter length but lower thrust for higher cone-angle –tradeoff between size/mass and I sp mu e e p a A e tan 1 cos 1 1 1 t t R R R 0 L 20 40 60 80 0 10 20 30 Half-angle ( ) R t 0.92 0.94 0.96 0.98 1 L/R t ( =50) 2 1 cos for spherical expansion 15 Nozzle Geometries - 12

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12 State of Practice for the Design of Socketed Piles in Rock

design parameters and methods for socketed piles are inappropriate and one can simply hope that those responsible for such work assume very conservative allowable loads. 3.2 Knowledge of Rock Mass Parameters In essence all the modern design methods require good knowledge of: The equivalent Young's moduli Of the

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Guidelines for Estimation of Shear Wave Velocity Profiles

parameters on VS. Gmax can be measured in the laboratory using a resonant column device or bender elements. While the void ratio and stress conditions can be recreated in a reconstituted specimen, other factors—such as soil fabric and cementation—cannot [Kramer 1996]. Laboratory testing requires very high-quality, undisturbed samples.

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Roller cone bit design - PetroWiki

Jan 19, 2016· Bit design method. The bit geometry and cutting structure engineering method of Bentson has since 1956 been the root from which most roller-cone bit design methods have been designed .Although modern engineering techniques and tools have advanced dramatically from those used in 1956, Bentson's method is the heritage of modern design and continues to be useful for background …

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Field testing methods for engineering geological ...

design purposes, parameters which represent a more ... tinuities, present in the rock or soil mass, which significantly influence the engineering properties of the materials concerned. Furthermore, sampling inevitably ... angle. Quoted correlations for 300mm penetration blow

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Geotechnical Site Investigation measured & derived ...

2. To be aware of derived parameters used as engineering design parameters SPT –N needs to be corrected (N60, N1(60)) to obtain derived geotechnical design parameters 3. To appreciate the basic foundation engineering design methods ASD: allowable stress design LRFD: load & resistance factor design

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HP series cone crushers Wear parts application …

The HP cone crusher is a com-pressive crusher in which feed material is crushed between a fixed bowl liner and a moveable mantle. Bigger rock particles are crushed directly between the surfaces of the mantle and bowl liner. This is called single layer crushing. Smaller rock particles are crushed between other rock particles, which is termed multi-

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