APPLICATION OF CUCKOO SEARCH METHOD IN 3D …
Application of Cuckoo Search Method in 3D Slope Stability Analysis … Masagus A. Azizi et al. 59 Based on max columns in X or Y, SF value of the 3D CS results were then compared to the
Statistical modelling of the blast design parameters
Statistical modelling of the blast design parameters influencing ground vibrations in a limestone quarry using design-expert Download PDF. Balamadeswaran Periasamy ... In the numerical simulation models, most methods use a single finite difference approach to simulate and validate the mine blasting process, which has few …
Study on rock fracturing in smooth blasting under initial stress
The rock fracturing in smooth blasting is captured by a high-speed camera with a resolution of 512 × 512 pixels and a shooting frequency of 25,000 frames/s. The distance between the granite specimen and the camera lens is 2.5 m, and the rock specimen is illuminated by three LED spotlights to ensure proper visibility.
Why Indiana Limestone Is One of America's Most Prized …
The Hoosier State's first commercial limestone quarry was established in 1827. Demand for limestone skyrocketed in the 1890s, after massive urban fires razed buildings across Chicago and Boston.
A novel environmental restoration method for an abandoned limestone
In this quarry, limestone exploitation activities over the last 40 years have destroyed the local environment and induced a series of environmental problems ( figure 3 ). Mor eover, due to the
Comparison of Blast-Induced Damage Between Presplit …
This paper focuses on the comparison of damage induced by smooth blasting and presplit blasting based on the excavation of high rock slope. The whole damage process of the smooth blasting and presplit blasting excavation method is studied by using a cumulative blasting damage numerical simulation technology based on the …
a Bench design of the limestone quarry. b Cross
Download scientific diagram | a Bench design of the limestone quarry. b Cross-sectional view of the limestone quarry with indication of sampling points of groundwater. c Plan view of the limestone ...
A new valuation method for dimension stone mining projects …
The Method is based on personal experience of valuation of more than 160 quarry projects in more than 50 countries over more than 30 years The Method principles are valid for any type of DS ...
Open-Pit Mining | Method and Process | Epiroc
Open-pit mining technology. Open-pit mining clearly offers a number of economic advantages over underground mining, especially now that mineral-processing technology has advanced to the stage where very low-grade ores can be treated profitably. 100 to 150 years ago, this was not the case, and mining was still much more selective.
Assessment of noise and ground vibration induced during …
DOI: 10.1016/S1674-5264(09)60078-8 Corpus ID: 129720709; Assessment of noise and ground vibration induced during blasting operations in an open pit mine — A case study on Ewekoro limestone quarry, Nigeria
The safe level blasting criteria from the USBM RI 8507
Changing the charge structure is also a conventional method [9][10] [11], with which presplit blasting can exert positive effects on shock absorption and reduce detonation wave propagation since ...
Indiana Limestone in Bloomington | History, Events & Tours
Monroe County is home to a 35-mile long, 10-mile wide corridor of Salem Limestone, formed long ago by an ancient inland sea. The thick, high-quality stone from our county was dubbed the "nation's building stone," and has been used to build 27 US state capitols, the Pentagon, the Lincoln Memorial, the Empire State Building, and countless other iconic …
Limestone | Characteristics, Formation, Texture, Uses, & Facts
Most limestones have a granular texture. Their constituent grains range in size from 0.001 mm (0.00004 inch) to visible particles. In many cases, the grains are microscopic fragments of fossil animal shells. Limestone has two origins: (1) biogenic precipitation from seawater, the primary agents being lime-secreting organisms and …
Mining | Free Full-Text | Precision Rock Excavation: Beyond
(a) Examples of ordinary blasts: above, production blast in a limestone quarry, Brazil ; (b) tunnel face after a blast: the poor quality of the contour obtained is noticeable . Figure 3. Examples of smooth blasting: ( a ) half cast clearly observable after a blast in tunnel driving; ( b ) result of a contour blast in open-pit mining [ 4 ].
[PDF] Vibration Safety Criteria for Surficial Rock Mass of …
Objective: In order to determine the blasting vibration safety criteria for slope rock mass scientifically and reasonably, the influence of stress waves on surficial rock mass of mine slopes was analyzed when stress waves propagate to the slope surface, and mathematical models for blasting vibration safety criteria are proposed based on the …
Webinar Summary: Guidelines for Perimeter …
Summary. Good pre-splitting and perimeter control in blasting is necessary both for bench maintenance and the safety and productivity of future shots. Good pre-splits and perimeter control, …
STONECO Hunter Limestone Quarry
Here at Hunter Limestone, we understand that good environmental performance is essential to ensure our ongoing business success. ... Hunter Limestone is the region's very first limestone quarry in close vicinity, enabling a large number of farming enterprises within. Read More. LICENCES & APPROVALS. STONECO PTY LTD is the owner and …
A novel environmental restoration method for an abandoned limestone …
The engineering measure, that is, the construction of an artificial slope by using local abandoned construction materials, solved the environmental problems in this quarry and provided site conditions favourable for revegetation, which restored the local ecosystem. In general, exploitation of rock materials, such as limestone or granite …
Methods of Stones Quarrying
Wedging is done well in soft rocks like marble limestone sandstone etc. Quarrying by use Of Channeling Machines In this method, the channeling machines are driven by steam, compressed air or electricity are used to make vertical or oblique grooves or channels on the rock mass, These machines make rapidly the grooves having a length of about, 24 ...
Geomatics for monitoring rehabilitation Status in Aruwakkalu Limestone …
Aruwakkalu limestone quarry in Sri Lanka, owned and operated by Siam City Cement (Lanka) Limited, is one of the largest limestone deposits in Sri Lanka. Since the limestone deposit is seated in a shallow depth, it is being excavated by utilising opencast mining methods. The target main product from the extracted limestone is to produce cement.
DETERMINATION OF BENCH BLAST DESIGN PARAMETERS FOR LIMESTONE QUARRY …
Bench design geometry parameters are considered the important issue of rock extraction. It directly has influences on rock extraction on all surface mines and quarries operation. This paper discuss the bench height calculation according to three important considerations; the stability of slope faces, the safety of the work place and the efficiency of the work place, …
(PDF) An Introduction of New Simulation and Optimization …
A long term production planning of limestone quarry is presented to supply consistent quantity and quality of limestone to a cement plant. A case study from Indian cement industry is presented ...
Limestone and sandstone quarrying in Ancient Egypt: tools, methods …
The outstanding exam- 39 Fig. 33. A gallery in the Ptolemaic or Roman part of the Gebel Tukh limestone quarry near el-Mansha with a horizontal slot cut at the top of the quarry face (photo James A. Harrell). ple of this is in the el-Dibabiya limestone quarry (Endo and Nishimoto 2009), where the long chisel in Figure 5a was found. 4.
(PDF) Evaluation and optimization of blasting approaches to …
This paper describes several methods of evaluating stemming performance in 16-inch blastholes. Tests are done on stemming ranging in size from nominal 1/4 " crushed rock up to railroad ballast ...
Design and optimization for bench blast based on Voronoi …
To verify the performance of the design and optimization method proposed in this paper, a practical hole-by-hole bench blast in a quarry open pit is selected as an application case. The blast area mainly consists of dolomite and limestone that are used as solvent in steelmaking. The emulsion explosive is used in this case.
(PDF) Optimal Design of Presplit Blasting Network of
[Show full abstract] Hongshun Limestone Quarry in Xinjiang. This study provided blasting schemes for hillside OPMs with different heights and slopes. This study provided blasting schemes for ...
(PDF) 05 chapter 3 rock excavation methods
Improving Drilling and Blasting Programms at Al Jazi Limestone Quarry. ... Figure 12 shows an example of a cut slope that used presplit basting methods which left visible half casts in the slope face. Presplit blasting requires relatively small drill holes, between 5 to 10 cm (2 to 4 in) in diameter because its goal is to create discrete ...
(PDF) Stone tool experiments and reduction methods at …
The problem appears to have been more acute at Isampur Quarry however, as the broken handaxe from Ziarat Pir Shabdan was an isolated occurrence, while 23 per cent of the handaxes from Isampur Quarry were broken. 779 Stone tool experiments and reduction methods at the Acheulean site of Isampur Quarry, India Figure 8.
Prediction of ground vibration due to mine blasting in a
Indeed, an ensemble technique is a robust machine learning method that combines several learners, e.g., ANNs or any other machine learning methods, to improve overall prediction accuracy.
An Uncertainty Method for Probabilistic Analysis of
Request PDF | An Uncertainty Method for Probabilistic Analysis of Buildings Impacted by Rockfall in a Limestone Quarry in Fengshan, Southwestern China | Rockfall is a common occurrence in open-pit ...