Impacts of limestone mining on the environment are manifold. Mining leads to landscape deformation and ecosystem destruction, which changes in groundwater …
This paper presents a case study of controlled blasting at a limestone mine. In the phase of expansion of cement plant a highly controlled blasting has to be done so no harm …
SURFACE LIMESTONE MINING: All over the world, limestone is generally mined from a quarry or through open-pit mining. This method is the easiest way to remove limestone without causing much destruction. In surface mining or open-pit mining, the topsoil and overburden covering the mineral are removed.
Frequency and scale of the blasting events are increasing to boost limestone production. Mines are approaching close to inhabited areas due to growing population and limited availability of land ...
Drilling and blasting are used to mine approximately 0.5 Mt/y of run of mine (ROM) although this quantity can change depending on the market demand. Only one blast is loaded at a time during one working shift. Each blasting process is carried out with three rows of blastholes drilled in a staggered pattern of 2.5 m × 3 m. The blastholes were ...
Using TOPSIS method, the present study tries to investigate the blasting operation in the Tajareh limestone mine and select the most appropriate blasting pattern.
for controlled blasting in open pit mines, they also offer great flexibility to production blasts (Dent, 1994; Kay, 2000, Mckinstry et al. 2002; Chavez and Chantry, 2003, Grobler, 2003; Mishra and Gupta 2012). This paper presents a case study of controlled blasting at a limestone mine. In the phase of expansion of cement plant a highly controlled
Thus, the predictive capacities of three artificial intelligence algorithms, backpropagation neural network (BPNN), ELM, and GPR, are investigated in this study using blasting data from a quarry (Ras Limestone Mine of Shree Cement) in India to …
Blasting operations create significant problems to residential and other structures located in the close proximity of the mines. Blast vibration is one of the most crucial nuisances of blasting, which should be accurately estimated to minimize its effect. In this paper, an attempt has been made to apply various models to predict ground …
1 Introduction. Deep-hole bench blasting is currently the primary method for aggregate extraction in mines. However, during the process of aggregate extraction, issues such as uneven rock fragmentation and high fines content often arise due to the complex geological conditions and suboptimal blasting process parameters (Roy et al., …
Underground mining of limestone has some advantages over surface quarrying and will probably increase in the future. Typical public concerns about limestone mining include dust, noise, blasting vibration, and …
Two of the most common are owning and operating a limestone quarry or quarries, as a part of a cement producer's operations, or purchasing limestone from a separate limestone mining company. Regardless of how a cement producer acquires limestone, they are now facing increased concerns from the public and regulators …
2.1 Experimental method. The Brazilian test and the uniaxial compressive strength test were both used to determine the basic mechanical parameters of the limestone specimens, which were collected at the test site of a limestone mine (Fig. 1).The limestone in the mining region is solid and durable, has not cracked yet, and …
cement plant capacities, limestone quality of plant feed, and various operational requirements. Although, several approaches to the mine scheduling problem have appeared in the literature including heuristics by Gershon [8], Lagrangian relaxation by Caccetta et al. [9], parametric methods
Purpose. Blasting is an important aspect of mining activities in which fragmentation is the key component that determines its efficiency. Fragmentation is the first result of blasting, and is ...
Mathematics 2022, 10, 4140 3 of 22 103 to 107 and a magnesium oxide (MgO) value below 2.5%. Therefore, blending of raw materials from the different parts of the limestone mine is necessary and the ...
2.2 Mining Limestone Using Surface Mining Methods 19 2.2.1 Excavation Methods The following are four applicable methods of the surface mining of limestone. 1. Conventional method 2. Surface and continuous miners 3. Ripping and dozing 4. Rock breaking by breaker. Conventional methods of mining include drilling, blasting, …
So far as India, the second-largest producer of cement, is concerned, the mineral production statistics of the Indian Bureau of Mines (7), the apex body dealing with mines and minerals in the country, showed that the pro-duction of limestone from April, 2014 to March, 2015 was 293 million metric tons, although the total cement-grade limestone ...
Environmental Impact Assessment (EIA) is a prominent technology to assess the environmental changes in the open cast Limestone mining region. However, traditional EIA methods and Limestone deposit identification involves time consuming, cost effective and manpower requirements. We cope-up these problem and incorporated with …
A review on different methods of activating tailings to improve their cementitious property as cemented paste and reusability ... A comprehensive critical review about mine tailings reuse in concrete industry was conducted. ... Investigation of Hydraulic Activity of Ground Granulated Blast Furnace Slag in Concrete, vol. 33 (2003), …
The rock excavation practice incorporates proper drilling and blasting as one of the most significant aspects. However, the generation of uncontrolled cracks and micro-cracks in post-blast opening geometry are some of the major disadvantages of drilling and blasting (Singh et al. 2014, 2015). Geological discontinuities are an integral part of rock …
This paper presents a case study of controlled blasting at a limestone mine. In the phase of expansion of cement plant a highly controlled blasting has to be done so no harm and damage occurs to the nearby green structure. MINE LOCATION The mine has a spread of 444.763 ha comprising mainly plain terrain lying outside forest area.
Firing sequence of blastholes in blasting is an inherent part of the blast design for various reasons that range from the spatial requirements to the control of throw during blasting in surface mines. Despite several such patterns in vogue, role of firing sequences in defining the size of fragmented block sizes is not properly understood. The …
The optimization of blasting operations greatly benefits from the prediction of rock fragmentation. The main factors that affect fragmentation are rock mass characteristics, blast geometry, and explosive properties. This paper is a step towards the implementation of machine learning and deep learning algorithms for predicting the …
One of the inseparable parts of mining activities is blasting which one of its important outcomes is fragmentation. Fragmentation is the first result of blasting that is directly related to the mining costs. There are various methods for determining the degree of fragmentation which are divided into two groups, direct and indirect methods. Among …
the blasting-induced ground vibration using the ANNs model, experimental methods, and 68 blasting data in an open-pit mine in Vietnam. In this study, five models with different numbers of neurons and different hidden layers were developed. Finally, the 1-5-8-10-2 ANNs model with three hidden layers (compared to the other
Limestone. Limestone is a sedimentary rock composed mostly of the mineral calcite and comprising about 15% of the Earth's sedimentary crust. It is a basic building block of the construction industry (dimension stone) …
By utilizing controlled explosions, miners fracture rock masses, facilitating their extraction and subsequent processing. Blasting is a cost-effective and time-efficient method that significantly increases productivity in these industries, enabling the extraction of essential raw materials that fuel various sectors of the economy.
Limestone comes in many different varieties. Chalk is a very fine grained, porous marine limestone composed almost entirely of microscopic fossils. Travertine is a freshwater sedimentary limestone that has very thin, crenu-lated layers and is commonly formed at springs. Marble is a carbonate rock, usually a marine limestone, that has been
Over the years, various models have been developed in the stages of the mining process that have allowed predicting and enhancing results, but it is the breakage, the variable that connects all the activities of the mining process from the point of view of costs (drilling, blasting, loading, hauling, crushing and grinding).
The ranges of PM10 concentrations at mine A and B were 0.267-5.592 and 0.130-0.325 mg/m³, respectively, and the concentration at blasting from mine A was significantly higher than mine B (p < 0.05).
Quarrying of Stones. Definition: Stones occur in the form of natural rock masses or layers on the surface. The process of extraction of suitable stones from their natural rock beds or layers is commonly called Quarrying of Stones.. It differs from the mining of ores of metals in that whereas quarrying is an operation carried out entirely on …
This paper presents a case study of limestone mine where a controlled blasting was conducted near a green structure of wagon tippler (at 2 m) being constructed for foundation work of belt conveyor as the mine …
Blast holes are drilled using drilling machines according to the desired length, diameter, spacing, and geometric features. The typical Drill depth and Diameters are: Drill depth: max. 25m. Drill diameter: 80-165mm. Blasting is the most widely used method to excavate limestone for cement production as the rock is usually too hard to be ripped ...
The mineral industry in India is undergoing a technological upheaval that is usually referred to as modern-day reforms or modernization.In various mining organizations, this has been reflected in terms of some noted characteristic features, such as exchanging knowledge, upgrading existing practices, and allowing private …
