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Excavatability assessment of rock masses using the ...

View flipping ebook version of Excavatability assessment of rock masses using the ... published by on . Interested in flipbooks about Excavatability assessment of rock masses using the ...? Check more flip ebooks related to Excavatability assessment of rock masses using the ... of . Share Excavatability assessment of rock masses using the ... everywhere for free.

(PDF) Excavatability assessment of rock masses using the ...

Excavatability assessment of rock masses using the Geological Strength Index (GSI) Bulletin of Engineering Geology and the Environment, 2010. George Tsiambaos. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 36 …

An application of fuzzy sets to the Diggability Index ...

Another deficiency of the conventional classification schemes is the existence of sharp transitions between two adjacent classes. For example, in Table 2, the determining index value between Excavation Class I and Excavation Class II is 40.Consequently, a D8 type of ripper is suggested for a site having an index of 39, while a D9 type is suggested for a site having an index of 41.

Rock Toughness Index For Excavatability Assessment.

Rock Toughness Index For Excavatability Assessment. W.E. Bamford PhD FIEAust MAusIMM Civil & Environmental Engineering Department, University of Melbourne. Summary The uniaxial compressive strength of a rock substance has traditionally been used as an indicator of the relative difficulty of cutting it, with a roadheader or tunnel boring machine.

WMS 456 Iphar Continuous Rating for Diggability Assessment ...

conditions) for ripping or direct excavation method by mining machines, the next step is to determine which machine or excavator should be selected for the excavation purposes. Many researchers have proposed several diggability or excavatability assessment methods for deciding on excavator type to be used in the field.

Handbook of Geotechnical Investigation and Design Tables

Table of Contents Preface xxi 1 Site investigation 1 1.1 Geotechnical involvement 1 1.2 Geotechnical requirements for the different project phases 2 1.3 Relevance of scale 3 1.4 Planning of site investigation 3 1.5 Planning of groundwater investigation 4 1.6 Level of investigation 4 1.7 Planning prior to ground truthing 4 1.8 Extent of investigation 6 1.9 Volume sampled 9

Handbook of Research on Trends and Digital Advances in ...

Engineering geologists face the task of addressing geological factors that can affect planning with little time and with few resources. A solution is using the right tools to save time searching for answers and devote attention to making critical engineering decisions. The Handbook of Research on Trends and Digital Advances in Engineering Geology is an essential reference source for the latest ...

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EXCAVATABILITY ASSESSMENT FOR THE EOCENE CARBONATE …

Excavatability or rippability, also called diggability, is the ease of excavation to remove material from the rock mass. The excavation method is assessed using Discontinuity Spacing Index (If), the Point Load Index (Is) and the Geological Strength Index (GSI) of the intact rock. The data originate from seven sites, previously studied in detail in rock masses along the slopes around Al-Salman ...

The assessment of slope stability and rock excavatability ...

Department of Mining Engineering, Karadeniz Technical University, 61080, Trabzon, Turkey GEOTECHNICS The aim of this study is to evaluate the stability and excavatability of newly stripped rock slopes (slope 1 (SN–1), slope 2 (SN–2), and slope 3 (SN–3)) in a limestone quarry. These are new pro -

An application of fuzzy sets to the Diggability Index ...

Introduction. The determination of the ease of rock excavation is one of the critical stages in surface mining and civil engineering projects. On many projects, the ease of rock excavation is mainly based on whether the rock can be economically excavated by mechanical excavators, or drilling and blasting is …

Rock mass and rippability evaluation thesis.pdf | Young's ...

Use of the RMR System in mining applications mainly involves underground mining. Applications are by Laubscher, 1977 (asbestos mining in Mrica); Ghose and Raju, 1981, Abad, et al, 1983 and Venkateswarlu, 1986 (coal mining in India); Unal, 1983 (coal mining in USA); and Kendorski et al, 1983 (hard rock mining in USA).

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Chapter 4 Engineering Classification of Rock Materials

Table 4–13 Fracture type 4–21 Table 4–14 Fracturing density description chart 4–21 Table 4–15 Joint set spacing categories 4–22 Table 4–16 Aperture category 4–23 Table 4–17 Joint infilling 4–24 Table 4–18 Joint persistence categories 4–25 Table 4–19 Types of joint ends 4–25 Table 4–20 Descriptors for weathering condition of joint face rock 4–27

Rock Excavation | PDF | Drilling | Rock (Geology)

Geological and mechanical properties of rock are interrelated when planning ROCK EXCAVATION. Rock characteristics are determined primarily by origin, formation and mineral composition. Rock breakage by percussive drilling can be divided into four phases: 1. Crushed Zone 2. Crack formation. 3. Crack propagation. 4. Chipping.

Top 7 biggest mining excavators in the world

Massive machines. This is the least we can say about the world's heftiest mining excavators out there. Some of these beasts can weigh more than 800 tonnes, especially the models we have to show to you today. Meet the top seven biggest hydraulic mining excavators on the planet and once you are done go view some of our small gold mining equipment including a cone crusher review …

Assessment of the Excavatability of Rock Based on Rock ...

During last five decades many attempts have been made to develop a means of assessing the excavatability of rock. These classifications have been used to select appropriate excavation systems and equipment used in civil and mining works. Empirical rating and seismic velocity systems are proposed for the rippability of a rock mass.

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The proposed mining methods have only focused on truck and excavator mining; further mining studies with an emphasis on bulk methods may improve economics. For example, the application of scrapers and surface miners may result in a possible reduction in operating costs, which needs to …

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(PDF) Performance Measurement of Mining Equipment

The measurement of mining equipment performance has evolved. Initially, the measurement was done using singlemeasurement indices such as machine availability, production index and utilisations ...

New approach in the application of seismic methods for ...

ting machines such as TBMs and roadheaders are used. However, cutting is currently not applicable to the rock mass ... sifications for the excavatability assessment based on seismic P-waves velocity can lead to poor estimates in terms of ... mining. Int J Surf Mining 2:237–244 Hoek E, Marinos P, Benissi M (1998) Applicability of the ...

The influence of rock mass and intact rock properties on ...

The results indicated that the Excavatability Index is the most acceptable criterion for the excavatability assessment.The outcome of this research has confirmed the significance of the RCI as a predictor of cutting performance of mechanical machines.

Rock slope stability and excavatability assessment of ...

The excavatability assessment chart proposed by Pettifer and Fookes (1994) was used for determining the excavatability of diabases. The kinematical analyses of the slopes indicated that no failure is expected for the right and left slopes at the dam site.

MINING Equipment List Mining Tools Names + Underground ...

Longwall Mining. The shearing machine is the most used equipment in the construction of tunnels and underground galleries where her head has tips to break the hardest places. Heavy mining machinery. Technology advances at an impressive speed and, as such, it expands to different markets. The mining sector is not the exception and the suppliers ...

APPLICATION OF SURFACE MINER IN INDIAN COAL MINES

2.3 Machines with front boom cutting drum 12 2.4 Machines with middle drum configuration 12 2.5 Pictorial view of Surface Miner Machine with middle drum configuration in discontinuous transport with truck system 12 2.6 Machines with front cutting wheel 13 …

Application of rock mass index (RMi) to the rock mass ...

Application of rock mass index (RMi) to the rock mass excavatability assessment in open face excavations Earthwork and surface excavation activities play an important role in construction projects. Selecting the best technique to loosen the overburden material within the surface excavation in open mining and geotechnical projects is of great ...

Continuous Rating for Diggability Assessment in Surface ...

The rocks can be loosened either by drilling-blasting or direct excavation using powerful machines in opencast mining operations. The economics of rock excavation is considered for each method to be applied. If blasting operation is not preferred and also the geological structures and rock mass properties in site are convenient (favourable ground conditions) for ripping or direct excavation ...

Production and Cost Assessment of a Potential Application ...

optimal mining method based on both qualitative and quantitative factors. Based on the results of this research, application of SM would benefit coal extraction in surface mining operations in WV. The estimated cost of coal extraction is lower than with conventional mining methods, and the machine is able to work selectively with high

Hakan Basarir - NTNU

Hakan gained PhD degree in Mining Engineering in 2002. He has over 20 years of professional experience in research and in teaching. He published 60 papers in national, international journals and meetings and translated a book.