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BLAST VIBRATION MONITORING IN OPENCAST MINES

blast vibration monitoring in opencast mines a thesis submitted in partial fulfillment of the requirements for the degree of bachelor of technology in mining engineering by shiv shankar kumar choudhary 110mn0389 ravi ranjan 110mn0436 under the guidance of prof b k pal department of mining engineering...

A Case Study on Safe Blast Design with Vibration Analysis

predicted by ground vibration before blasting work , vibration velocity due to the conversion distance, and it was by ground vibration rather than blasting pressure to avoid triggering by surrounding noise , A Case Study on Safe Blast Design with Vibration Analysis ....

Ground Vibration due to Blasting in Limestone Quarries ,

A database of ground vibration due to blasting at 27 limestone quarries, located in various parts of India, has been created The database contains peak particle velocity PPV , frequency, other ....

Measurement of Blast

MEASUREMENT OF BLAST -INDUCED GROUND VIBRATIONS AND SEISMOGRAPH CALIBRATION by MarkS Stagg 1 and Alvin J, Engler2 ABSTRACT Blast-induced ground vibrations from surface coal mine, quarry, and construction blasting were measured and analyzed for frequency content and duration characteristics Eighteen commercially available ground vibration...

Reduction of Blast Induced Ground Vibrations with Open ,

Reduction of Blast Induced Ground Vibrations with Open Trenches in Surface Mines H S Venkatesh , In order to study the reduction of ground vibrations due to blasting by a trench, Venkatesh 2002 conducted field , and the maximum reduction in vibration levels due to the trench were 11 and 19 per cent respectively The field...

Determination of blast

A blast generates ground shock and vibration which may cause damage to the surrounding structur In the recent decades, blast-induced ground shocks and their propagation in rock mass have been drawing more and more attention The blast effects include change in rock behavior having implications on the stability and integrity of structur...

BLAST VIBRATION STUDIES IN SURFACE MINES

ground vibration level during the blasting Ground vibration is directly related to the quantity of explosive used and distance between blast face to monitoring point as well as geological and geotechnical conditions of the rock units in excavation area Blast induced ground vibration is an impact from the use of explosives that has historically...

Case Study Selection of Blasting Limits for Quarries and ,

Acceleration is a less common way of measuring ground vibration This is because it is not referred to in many blasting standards However, manufacturers of sensitive equipment such as computer hard...

WHITE PAPER Influence of Geology on Ground Vibrations ,

summarizes the analysis of 316 ground vibration measurements recorded during 124 individual blasts Background information is found in Annex A that may help readers understand concepts on rock blasting vibrations, safe blasting standards, and structure response to ground vibrations supported by 70 years of research findings...

Prediction of blast induced ground vibration BIGV of ,

2 Blast induced ground vibration During a blasting operation with in a rock, following the detonation of the explosive, a very rapid decomposition of the charge takes place and entire of the blast hole is occupied with gaseous detonation products with very high pressure and temperature characteristics...

Ground Vibration Monitoring Standards and Methodology

While these blast monitoring guidelines may be helpful in other ground vibration and air overpressure monitoring cases, they are for blasting so use due diligence Ultimately, it is up to the operator to use his or her experience, judgment, and knowledge in order to collect accurate and consistent results...

by Richard Playle

The degree of ground vibration felt is dependent on several aspects of the blast and the surrounding rock mass The length of delays and the direction of progression of delays have a significant effect on ground vibration levels The different way in which waves can arrive at a point is illustrated in Figure 1...

Blast and Vibration Monitoring Plan

that protects the amenity of the surrounding community As a consequence Condition 17 Ground Vibration and Condition 18 Blast and Vibration Management Plan were included within Statement 706 13 EPA Bulletin 1466 Consequent to an application by the proponent under Section 46 of the Environmental Protection Act...

Analysing the Ground Vibration Due to Blasting at ,

Cite this paper Mehdi Hosseini, Mehdi Seifi Baghikhani, Analysing the Ground Vibration Due to Blasting at AlvandQoly Limestone Mine, International Journal of Mining Engineering and Mineral Processing , Vol 2 No 2, 2013, pp 17-23 doi 105923/jmining2013020201...

Blasting Vibration

blasting operations A blasting seismograph measures the Peak Particle Velocity PPV of the ground vibrations in inches per second and records the rise in air over pressure above ambient conditions PPV is analogous to a speed limit In other words, as the blasting vibration...

Ground Vibration Monitoring

Ground vibration monitoring is the process of measuring and recording the movements in the ground using a seismograph As vibration occurs at a source, a seismic wave travels causing soil and rock particles to move back and forth over very small distanc...

Investigation of the effect of ground vibration on ,

Request PDF on ResearchGate Investigation of the effect of ground vibration on buildings due to blasting The ground vibrations caused by bench blasting at open pit mines have been explored ....

Prediction of ground vibration due to quarry blasting ,

Abstract Blasting is a widely used technique for rock fragmentation in opencast mines and tunneling projects Ground vibration is one of the most environmental effects produced by blasting operation Therefore, the proper pre-diction of blast-induced ground vibrations is essential to identify safety area of blasting This paper presents a pre-...

MEASUREMENT AND EVALUATION OF BLASTING GROUND ,

MEASUREMENT AND EVALUATION OF BLASTING GROUND, _____ 1297 AIM OF THE RESEARCH When ground vibrations and airblast over pressure levels are high, they can cause human annoyance and even cause damage to nearby structur The objective of the present study is the measurement and evaluation of the ground vibration and...

Analysing the Ground Vibration Due to Blasting at ,

Analysing the Ground Vibration Due to Blasting at AlvandQoly Limestone Mine An extensive study was carried out at a quarry named Alvand Qoly Figure 1 which belongs to Kurdestan Cement Company The site is located near Bijar city in western Iran The limestone deposit is of pliocene age The bedding planes are horizontal Limestone rock is...

Vibration Monitoring

Vibration monitoring is the measurement and recording of passing movements in the ground or in a structure, using a seismograph like the one shown at left, or ,...

Ground Vibration due to Blasting in Limestone Quarries ,

A database of ground vibration due to blasting at 27 limestone quarries, located in various parts of India, has been created The database contains peak particle velocity PPV , frequency, other vibration related and blast design parameters Regression analysis of the data is carried out to derive site constants of the USBM predictor equation for individual quarri...

Forecasting ground vibration due to rock blasting a ,

Nov 16, 2017 0183 32 Ground vibration due to rock blasting is one of the main concerns in the mining operation and may cause severe damages to nearby structures and population Therefore, accurate prediction of ground vibration plays an important role in the minimization of environmental effects of blasting in min...

Airblast and Ground Vibration Monitoring at Chimiwungo Pit

2 Measurements of blast induced vibration, airblast level in and around the mine generated due to blasting 3 Estimate safe charge and simulation to determine maximum number of holes firing per delay 4 To suggest airblast and ground vibration levels was within safe limits from the shot blasted Location and Geology of Study Area...

Shock and Vibration

Ground vibrations originating from bench blasting may cause damage to slopes, structures, and underground workings in close proximity to an operating open-pit mine It is important to monitor and predict ground vibration levels induced by blasting and to take measures to reduce their hazardous effects The aims of this paper are to determine the weaker protection objects by comparatively ....

BLAST VIBRATION COURSE MEASUREMENT

In uniform rock conditions, the ground vibration waves will spread out and reduce equally in all directions, similar to the pond illustration Blasts rarely consist of only one charge and rock is an imperfect medium for the transmission of vibration The blast vibration consists of the different...

Ground Vibration Monitoring Induced Due to Blasting ,

Uttam Blastech does end-to-end ground vibration measurement and analysis of projects in India Initial and ongoing monitoring of ground vibrations to ensure that the guidelines of mining, quarrying, and environment comply Third-party testimonials on vibrations generated during blasting...

ground vibration due to blast status of r

Evaluation of blastinduced ground vibration predictors of blasting, ie ground vibrations, air blasts, fly rocks, back breaks the ground vibration attenuates exponentially with distance but due to maximum charge per delay kg , R the distance between blast Ground vibration due to blasting...

Prediction of ground vibration due to quarry blasting ,

Apr 11, 2016 0183 32 Blasting is a widely used technique for rock fragmentation in opencast mines and tunneling projects Ground vibration is one of the most environmental effects produced by blasting operation Therefore, the proper prediction of blast-induced ground vibrations is essential to identify safety area of blasting...

Air Blast and Ground Vibrations Due to Blasting at Gevra ,

Properly planned blast design and blast parameters, like spacing, burden, depth of hole, stemming, etc as well as adoption of a shock tube initiation system reduced the ground vibrations and air blast noise A relationship was established between the blast parameters, which can be used in conditions similar to those prevailing at Gevra project...