STABILITY EVALUATION OF AN UNDERGROUND QUARRY …

2018-1-8 · and response of the underground quarry were as well carried out. Simulation results revealed that in both static and after the ground motions, the quarry is relatively stable. Key words, Joints, Oya underround quarry, Numerical Analysis . 1. INTRODUCTION. Underground mines stability is of great concern in geotechnical division mainly for a safe ...

A new paper on the Tumbi Quarry landslide in Papua New ...

2013-11-4 · The analysis here is comprehensive and interesting. The Tumbi Quarry landslide was a deep-seated failure, so one would expect that the landslide would respond to long term rainfall trends rather than short duration intense rainfall. The …

Application of discrete fracture networks (DFN) in the ...

2019-9-12 · failures in underground coal mine roadways. Fekete and Diederichs (2013) used combined laser scaning-3DEC modelling for underground rock mass characterization and stability analysis. Salvini et al. (2014) used a DFN-3DEC approach to investigate the stability of a quarry slope located in the Torano basin, Carrara, Italy. They

The Design Of Quarry Faces And Slopes | Agg-Net

2021-8-26 · On a quarry slope formed by three 15m faces at 70° with a minimum bench width of 15m, the reserves lost would amount to approximately 10,000 tonnes per 10m of face when compared with a 7m bench width (fig. 4). When this loss is scaled to actual quarry …

Rockfall Hazard in an Old Abandoned Aggregate Quarry …

2013-12-24 · 2. Description of the Quarry . The subject of this study is a small scale abandoned ag-gregate quarry exploiting a small hill in the north western part of Tétouan at the following coordinates: 35˚34''32"N; 5˚23''30"W. The quarry stretches in NE-SW direction with its face toward the south east and it extends ap-proximately over 120 m (Figure 1

Vibration response of the waste rock dump in open pit …

2017-9-13 · Fig. 1. Photo of the quarry near Jarnoltowek in the year 2012; on the left – part of the quarry face, on the right – embankment of the internal dump. Fig. 2. Sketch of the dump cross-section in the year 2012 (according to Slovák, 2013). The analysis of the geotechnical parameters of waste rock samples was performed in the laboratory

Ground surface rock buckling: analysis of collected cases ...

2021-4-22 · Four buckling failures at the Medika Pluton granite quarry in Manitoba occurred in the direction of southeast. The longest pop up was 60 m in length and raised about 1.5 m, and the shortest failure was 1.5 m long and raise less than 0.15 m. Summary and analysis of collected case database

Analysis of a complex slope failure in a granodiorite ...

2017-9-27 · We describe a complex failure mechanism in a 30-m high bench in a granodiorite quarry. This mechanism included a circular failure in completely decomposed granodiorite at the bottom of an unstable area pushing on a block of granodiorite. This first block induced subsidence and failure of a wedge of highly decomposed granodiorite, which pushed a slender block below it, causing it to topple.

(PDF) Discrete Element Modelling of Complex Failure ...

Two-dimensional failure mechanism at failed quarry slope, where evidence of a slope stability analysis by limit equilibrium and strength reduction complex failure mechanism has contributed to the instability. methods. Computers and Geotechnics. 34(3): 137–150. [17] Bhasin, R. and K. Hoeg. 1998.

THE IMPORTANCE OF FORMER QUARRY ROCK SLOPE …

2017-4-24 · each quarry was drawn to determine the potential modes of failure. There are three modes of failures that can be identified from a stereogram, i.e., wedge failure, planar failure and toppling failure. All data from rock slope kinematic stability analysis, rock material testing and discontinuities survey were combined to determine the

(PDF) Failure analysis of belt conveyor systems

Failure analysis for pulleys (number of total failures and with resp ect to bearings) In figure 15 one may see examples of damaged pulley coating and bearing. Fig. 15.

Analysis and Assessment of Earth Moving ...

2014-6-19 · Analysis and Assessment of Earth Moving Equipment for ... Survey at the companies of the quarry industry • Development of a questionnaire for the company ... construction failures • Compilation of suggestions of improvement and the safe operation of the equipment. Univ. Prof. Dr. …

APPENDIX E QUARRY FACE STABILITY

2018-3-16 · 2. A number of failures of bench to inter-bench scale can be seen in the northern quarry face today, and in past aerial photographs. Plates 1 and 2 in the main report clearly show these failures. These failures occurred as block sliding on the following features: North Eastern Part of the Quarry

MINE WASTE FAILURE: AN ANALYSIS OF EMPIRICAL AND …

2021-1-28 · coal dump failures in the Canadian Rocky Mountains that occurred in the previous 25 years. Their failure mechanisms and modes were analyzed and classified; the cases were modeled, and empirical models were created in order to provide more tools to estimate the risk of mine waste failures.

Rock slope stability assessment of limestone quarry; an ...

According to the results of kinematic and numerical analysis, different types of failures are expected in different sites of quarry. Based on the field studies and stability analyses of the cut slopes, slope geometry optimization and necessary support measures such as …

Analysis of shallow slope failure

2016-9-20 · Belmont Quarry in the Lower Hutt province to record detailed photographs of localised bench failures. The aim was to develop a work˜ow starting with drone photography and concluding with back analysis of the slope failure using their 3D slope analysis program, TSLOPE. A subset of the large number of UAV images was processed using Pix4D

Maptek

Analysis of shallow slope failure Maptek I-Site Studio software contributed to workflow for analysing slope failure in weathered rock in a quarry in New Zealand. In May 2016, TAGA Engineering Software Ltd flew an unmanned aerial vehicle (UAV) over part of Winstone Aggregates'' Belmont Quarry …

Evaluation of Structurally-Controlled Failures In Large ...

2012-6-24 · These events can take the form of relatively localized instabilities such as rock fall, which are risky for quarry operators and equipment, to large-scale slope failures which, apart from evident safety problems, can hinder further exploitation of the ore body sectors or …

Slope Stability Analysis of Bench in Complete …

2014-8-21 · geometrical conditions associated with the occurrence of such failures were noticeable while planar and toppling had no noticeable failure. The inference deduced from slope analysis would be useful to management of Complete Construction Solid Concentrate (Quarry) Limited in having a proper understanding of the slopes analysis mechanism.

The Design Of Quarry Faces And Slopes | Agg-Net

2021-8-26 · On a quarry slope formed by three 15m faces at 70° with a minimum bench width of 15m, the reserves lost would amount to approximately 10,000 tonnes per 10m of face when compared with a 7m bench width (fig. 4). When this loss is scaled to actual quarry dimensions, very large quantities of reserves are lost.

Study of Reliability Modeling and Performance Analysis of ...

2015-2-6 · goal is to find Pareto analysis of subsystems that affect overall system failure, characterizing the frequency of subsystems failures and ranking system for each subsystem failure. Pareto Chart is a priority failure analysis showing overall subsystem. Then . f. …

The assessment of slope stability and rock excavatability ...

The SMR analysis has shown that SN–1, SN–2 and SN–3 are ''partially stable (some joints and many wedge failures)'' when mechanical excavation is used. It was deduced from the kinematic, SSPC and SMR analyses that the safe dip angles of SN–1, SN–2 …

Dealing with slope failures

2019-5-1 · Slope failure analysis conducted in a quarry in New Zealand provided interesting insights. Data collected and parameters set, in Maptek PointStudio software (formerly I-Site Studio), allowed a 3-D model to be created from surface geometry to back analyze and illustrate the …

Analysis of Shallow Slope Failure | Agg-Net

2021-7-30 · The shallow slope failure occurred on an upper-level bench slope and measured about 14m high and 20m wide at the toe. Slope failures are controlled by rock structure. Intersecting rock fractures form the failure surface exposed towards the top part of the slope face. The failure surface is then assumed to continue towards the toe of the slope ...

Quarry Wall Slope Stability Study | Draper Aden

2018-8-27 · The analysis revealed that it would be unsafe to put a load on the rim of the quarry, but just a few feet back from the rim the FOS was over 9.0 for a building. This means that the resisting forces of the rock are more than 9 times the forces driving a …

(PDF) Rock slope stability assessment of limestone quarry ...

According to the results of kinematic and numerical analysis, different types of failures are expected in different sites of quarry. Based on the field studies and stability analyses of the cut slopes, slope geometry optimization and necessary support measures such as …

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