opencast mining benches

OPTIMIZATION OF BENCH DESIGN IN OPENCAST MINES …

PDF | On Feb 24, 2019, Prashant Singh and others published OPTIMIZATION OF BENCH DESIGN IN OPENCAST MINES WITH COAL ASH AND OVERBURDEN AS A BACKFILL MATERIAL | Find, read and cite all the research ...

DESIGN OF STABLE SLOPE FOR OPENCAST MINES

The basic objective of the project is primarily addressed towards: a) Understanding the different types and modes of slope failures b) Designs of stable slopes for opencast …

Benches

Proper design of working benches, haul roads, berms, spoil heaps and drainage arrangement and their proper upkeep is of paramount importance in an opencast mine from the point of view of productivity, cost-effectiveness and safety. Mining engineers should take an integrated view of vital parameters. The article gives some guidelines on …

Selection of practical bench height in open pit mining …

Determination of practical bench height is an important subject in open pit mining. This subject has always been an issue with different and sometimes conflicting criteria that have to be ...

(PDF) Particulate matter pollution in opencast coal mining …

Variation in PM exposure in an opencast mine As discussed earlier, workers working at diferent places inside a mine are exposed to diferent levels of PM depending on their location and association with the mining operation. ... Gautam and Patra [66] reported that PM generated at the lower benches of amine travel across all other higher benches ...

Open-Pit Mining: A Comprehensive Guide

Open-pit mining, or opencast mining, is a surface mining technique used for large-scale operations. It involves extracting minerals from a pit by removing waste rock and overburden. Commonly used for …

Optimization of Blasting Parameters in opencast Mines

Selection of proper explosive in any blasting round is an important aspect of optimum blast design. Basic parameters include VOD of explosive (m/s), Density (g/cc), Characteristic …

Opencast Mining

The slot is then expanded to form a bench system. Mining continues by advancing the benches horizontally within the broad framework of the ultimate mine layout. The …

Applicability of Controlled Blasting in Large …

The Jayant project of Northern Coalfields Limited is located in the Singrauli Coalfields of Singrauli district, Madhya Pradesh between latitudes 24 ° 6 ' 45"to 24 ° 11 ' 15" and longitudes 82 ° 36 ' 40" to 82 ° …

Open-cast Mining

Open-cast mines are dug on benches, which describe vertical levels of the hole. These benches are usually on four to sixty-meter intervals, depending on the size of the machinery that is being used. Many …

ASSESSMENT OF SLOPE STABILITY IN OPENCAST COAL …

As the open cast mining methods is a very financially cost effective mining methods which allows the high grade of mechanization and more, enormous creation volumes. In India, the opencast mining methods accounts for about 95 per cent of coal production (DGMS Report, 2016). Consequently, the utilization of opencast mining innovation going ...

Dispersion of respirable particles from the …

At each location (32 locations at KIOM and 16 locations at MIOM) sampling was carried out for 30 min using Grimm aerosol spectrometer. Along each section, the measurements were taken within 2 h with the assumption …

Trace element profile of TSPM with depth within opencast

This study presents source apportionment and toxicity level of trace element concentration in total suspended particulate matter (TSPM) fraction of settled dust at different benches of opencast coal mine. In opencast coal mine, various mining associated activities are responsible for emission of TSPM. It is significant to study these …

(PDF) Mining Methods: Part I-Surface mining

Surface mining; Classification of surface mining methods together with the desired parameters/ conditions suitable for their applications; Open pit mining; Classification of quarrying methods ...

OPENCAST COAL MINING AT LARGE DEPTH IN INDIA

Constraints in deep opencast coal mine and their likely solutions . Some of the important constraints which might occur during deep opencast coal mining are highlighted and discussed as follows. Stability of high benches . Slope failures are one of the leading causes of fatalities in opencast mining operations. It is

OPENCAST COAL MINING AT LARGE DEPTH IN …

analysis and monitoring is must for a deep opencast mine involving high benches. Transport of material from pit As o pencast mines get deeper, haul d istances and cost o f transport ation will ...

Design of an Effective Illumination System for an Opencast Coal Mine

Research studies carried out on opencast mine illumination by different investigators are limited in both India and abroad. Mayton [] investigated different surface mining operations in various regions of the United States using visual task evaluation, a method used by the CIE and the IES and data were collected for surface mines and …

Optimization of Blasting Parameters in opencast Mines

Drilling and blasting are the major unit operations in opencast mining. Inspite of the best efforts to introduce mechanization in the opencast mines, blasting continue to dominate the production. Explosives contribute currently about 5% of the direct cost of production and if the aggregate cost of drilling and blasting is taken together, this ...

Compilation of DGMS Norms Applicable in Opencast Mine …

This document summarizes DGMS norms and regulations for haul road design, bench dimensions, overburden dump specifications, bench slope angles, and minimum distances for workings near railways/roads in opencast mines. Key requirements include haul roads being a minimum 3 times the largest vehicle width plus 5 meters wide, benches no …

A Critical Review of Stability Analysis and Design of Pit …

the mine is 960 RL. The pit bottom RL of the mine is 840 RL. There are fourteen benches on dip side. The height of slope on dipside of the mine is 120m. The top four benches in loose strata are 5m high whereas the remaining 10 benches are 10m high with overall pit slope angle of 450. The average rainfall at this mine was about 1160 mm.

Surface Mining Methods and Systems | SpringerLink

Heights and elevations of spoil benches and overall slopes can 1e selected to avoid instability and to obtain a preplanned final surface, i.e. Reclamation is part of the mine plan. Minimum of final leveling is required. Spoil can be dumped in any desired interchange. ... In opencast mining, a mining system is understood as the order and ...

DESIGN OF STABLE SLOPE FOR OPENCAST MINES

On the contrary, opencast mining attracts environmental concerns such as solid-waste management, land degradation and socio-economical problems. In addition to that a large number of opencast mines, whether large or small, are now days reaching to deeper mining depths. As a result analysis of stability of operating slopes and ultimate pit slope ...

Blast‐Casting Mechanism and Parameter

From the point of view of blast-casting application in a benched deep-hole in an opencast mine, ECP is an important indicator to measure casting effect and production cost. ... Rock benches at the top of the blast-casting area are divided horizontally. The coal seam in the second mining districts inclines from North to South with the dip angle ...

Slope Failures in the Opencast Coal Mines of Wardha Valley …

Wardha Valley Coalfield (WVC) is a NW–SE elongated structural basin with its coal bearing zone spreading over an area of 800 sq km along a length of 116 km situated towards the south of the city of Nagpur in the central region of India (Fig. 1).This coalfield has around 40 opencast coal mines, which are largely of medium scale type with …

OPENCAST COAL MINING AT LARGE DEPTH IN INDIA

analysis and monitoring is must for a deep opencast mine involving high benches. Transport of material from pit As opencast mines get deeper, haul distances and cost of transportation will increase

A system-wide approach to minimize the operational cost of …

The production cycle of open-cast coal mines generally includes drilling, blasting, loading, hauling and coal preparation activities. Individual optimization of these activities does not mean that the whole system is optimized. This paper proposes a cost model considering all activities in mining cycle and system-wide approach to minimize …

Optimization of Blasting Parameters of Opencast Mines

are working on with opencast mining and most of the mining operations are performing with drilling and blasting. The opencast working plays a crucial role in mining because of the ... scientifically and analyze the type of explosives for various benches. So with the help of a computer-assisted method or module, „SABREX‟ was helpful.

Bench in Open-Pit Mining

Bench is a horizontal layer of ore rock upon which stripping and mining are performed in an open-pit mine. The bench is an essential constituent of the open stope. The bench on which stripping and mining are conducted is called the working bench. The bench temporarily unused is called a temporary nonworking bench.

Stability Evaluation of Highwall Slope in an Opencast …

imports (https://coal.nic.in/). Opencast mining is a very cost-effective mining method allowing a high grade of mechanization and large production volumes. In India, fast increase in output of ... reforming of benches, rerouting of haul roads and production delays. The Directorate General of Mines Safety (DGMS) may even close the mine, in case ...

Open-Pit Mining | Method and Process

Open-pit mining, also known as opencast mining, is a surface mining technique that extracts minerals from an open pit in the ground. This surface mining technique is used when mineral or ore deposits are found relatively close to the surface. ... Blast holes are then drilled in a very specific pattern and benches are blasted. A deep open-pit ...