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blast vibration studies in surface mines

BLAST VIBRATION STUDIES IN SURFACE MINES

This is to certify that the thesis entitled, ―Blast Vibration Studies in Surface Mines‖ submitted by Mr. Badal Kumar Kujur in partial fulfilment of the requirement for the award of Bachelor of Technology Degree in Mining Engineering at the National Institute of Technology, Rourkela (Deemed University) is an authentic work carried out by him ...

Blast Vibration Studies in Surface Mines - ethesis

Blasting is very important process for mining operation and a lot of explosive is used for this purpose. The blasting process and usage of explosives, however, remain a potential source of numerous human and environmental hazards. Various studies indicate that fragmentation accounts for only 20-30% of the total amount of explosive energy used.

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PRODUCED BY GROUND VIBRATION FROM SURFACE MINE BLASTING by D. E. Siskind1, M.S. Stagg!,J. W. Kopp5, and C. H. Dowding' ABSTRACT The Bureau of Mines studied blast-produced ground vibration 1 :·om surface mining to assess its damage and annoyance potential, and to de1 ~rmine safe levels and appropriate measurement techniques.

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COMPARATIVE STUDY OF BLASTING VIBRATIONS FROM INDIANA SURFACE COAL MINES By David E. Siskind,1 Steven V. Crum,2 Rolfe E. Otterness,3 and John W. Kopp4 ABSTRACT The Bureau of Mines performed a comparative study of nine sites at eight surface coal mines to determine if the presence of near-surface underground abandoned workings resulted

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original studies of blast-produced crack­ ing in residences involved a variety of measurement methods. In this study of production blast~ng at three midwestern surface coal mines, the Bureau of ~lines investigated the three most common methods of measuring blast vibrations near residential struc­ tures.

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Field studies at an underground mine site were conducted to evaluate and monitor blast-induced vibrations on an underground coal mine roof. The vibration data were evaluated so that a suitable damage criteria or guidelines from which a safe operating distance between surface blasting and underground mine operations can be established.

Prediction of Blast-Induced Ground Vibration in a Mine ...

高达10%返现 · Oct 13, 2020 · Prediction of ground vibration induced by blasting operations is a crucial challenge to engineers working in surface mines. This study aims to assess the efficiency of two advanced machine learning models in predicting ground vibrations in a granite quarry located in Malaysia. To this end, two intelligent models were proposed by hybridizing the relevance vector regression

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Jun 01, 2016 · Nicholson (2005) compared Office of Surface Mines (OSM) standard with blast field data at Bengal Quarry, Jamaica. Ozer (2008) presented and analyzed results of ground vibration induced by blasting during construction of metro tunnel at Istanbul, Turkey. 659 blast events were recorded in 260 shots. Rock types were sandstone, shale and limestone.

Summary of Surface Blasting and Damages with Analysis of ...

Mar 24, 2015 · Blast Damage Mechanisms at Ekati TM Mine by Peterson (2001) The EkatiTM Diamond Mine is located in the Northwest Territory, Canada. The study was done to determine the quality of the final pit wall using the presplit blasting technique. As a part of the study, vibration and gas penetrating equipment were set up and a total of 3 blasts were ...

Comparative Study of Blasting Vibrations From Indiana ...

COMPARATIVE STUDY OF BLASTING VIBRATIONS FROM INDIANA SURFACE COAL MINES By David E. Siskind,1 Steven V. Crum,2 Rolfe E. Otterness,3 and John W. Kopp4 ABSTRACT The Bureau of Mines performed a comparative study of nine sites at eight surface coal mines to determine if the presence of near-surface underground abandoned workings resulted

Measurement of Blast-Induced Ground Vibrations and ...

Effects of ground vibrations generated from surface blasting have been of increasing public concern. The growing number of surface coal mines and quarries operating in populated areas has caused considerable consternation lCi vil engineer. 2 Electronics engineer. Both authors are with the Twin Cities Research Center, Bureau of Mines,

Structure response and damage produced by ground vibration ...

Abstract. Direct measurements were made of ground-vibration-produced structure responses and damage in 76 homes for 219 production blasts. These results were combined with damage data from nine other blasting studies, including the three analyzed previously for Bureau of Mines Bulletin 656.

Prediction of Blast-Induced Ground Vibration in a Mine ...

Oct 13, 2020 · Prediction of ground vibration induced by blasting operations is a crucial challenge to engineers working in surface mines. This study aims to assess the efficiency of two advanced machine learning models in predicting ground vibrations in a granite quarry located in Malaysia. To this end, two intelligent models were proposed by hybridizing the relevance vector regression (RVR) with the grey ...

Ground vibrations and air blast effects induced by ...

Ground vibration: Air blast Introduction On surface mining, blasting technique may be considered as the most economical method used for fragmenting rocks masses. Nonetheless, only 20-30% of the used energy is served for rocks fragmenting and displacing, while the rest is wasted in the form of ground vibration, air blast, noise and fly-rocks [1].

Determination of blast-induced ground vibration equations ...

Jun 01, 2016 · Nicholson (2005) compared Office of Surface Mines (OSM) standard with blast field data at Bengal Quarry, Jamaica. Ozer (2008) presented and analyzed results of ground vibration induced by blasting during construction of metro tunnel at Istanbul, Turkey. 659 blast events were recorded in 260 shots. Rock types were sandstone, shale and limestone.

RI 8507 Structure Response and Damage Produced by Ground ...

The Bureau of Mines studied blast-produced ground vibration from surface mining to assess its damage and annoyance potential, and to determine safe levels and appropriate measurement techniques. Direct measurements were made of ground-vibration-produced structure responses and damage in 76 homes for 219 production blasts.

Blasting Vibrations - Vibrationdamage

Mar 29, 2021 · Regulation of Blasting. In theory at least, surface mine blasting is highly regulated in the U.S. by the U.S. Bureau of Mines (USBM), Office of Surface Mining (OSM). You can see the relevant regulations in the OSM Blasting Performance Standards, 30 Code of Federal Regulations, Sec. 816.61 (first page shown at right).

Understanding Blast Vibration and Airblast, their Causes ...

1. Introduction to Blast Vibration and Airblast When a blast is detonated, only a portion of the total energy is consumed in fracturing and shifting the rock. The remaining energy is dissipated in two forms: (a) as vibration, in the form of seismic waves traveling very rapidly within the ground and along the ground surface and,

Estimation of Damage in an Underground Mine Due to

Surface blasting and underground monitoring timing was planned by observing proper coordination between surface blasting team and underground monitoring team so that vibration in underground structures occurred only due to surface blasting. In case study mine site, a total of 73 observations were recorded at

A Comparative Study of Ground and Underground Vibrations ...

Oct 26, 2016 · 5.2. PPV Estimation of Surface Vibration. Peak particle velocity of the bench blasting induced vibrations in the mine can be estimated according to the transmission law of vibrations. In Figure 9, the peak particle velocity of surface vibration can be estimated depending on the maximum charge amount per delay and distance (). For structures of ...

Coal Blasting FAQs - Explosives and Aggregate

Many scientific studies have investigated the potential of blast vibrations to damage residential-type structures. The conclusions from these studies have been incorporated into DNR’s regulations. The blasting activities at all surface mining operations are regulated to prevent threshold or cosmetic damage (hairline cracks) to the weakest of ...

NOISE & VIBRATION DATABASE - Metalliferous Mines India ...

NOISE & VIBRATION DATABASE. ¨ Activity accounting technique for environmental noise assessment in mechanized surface mining. ¨ Air blast and ground vibrations due to blasting at Gevra Project of South Eastern Coalfields Ltd. in India. ¨ An interpretation of the effects of using different delay intervals in blasting at an open-cast mine in ...

Vibration | Free Full-Text | Membrane Action of Cladding ...

A recent blast design trend is to properly select cladding characteristics in order to limit blast consequences on its supporting structure. In this context, it is worth noting that cladding components may exhibit significant membrane action, and its effects may be decisive for the supporting structure. The main focus of the present study was to examine these effects through two-step ...

Structure response and damage produced by ground vibration ...

Abstract. Direct measurements were made of ground-vibration-produced structure responses and damage in 76 homes for 219 production blasts. These results were combined with damage data from nine other blasting studies, including the three analyzed previously for Bureau of Mines Bulletin 656.

ESTIMATING THE EFFECTS OF BLASTING VIBRATIONS ON

the slope, the frequency and the amplitude, of the ground vibration produced by blasting, is explored using numerical models in 3DEC. The numerical models were calibrated initially with data collected using seismographs installed in a surface mine operation and recording vibrations produced by an underground mine drill and blast operation.

Estimation of Ground Vibration Intensity Induced by Mine ...

Jun 22, 2021 · Abstract In surface mining, blasting is an indispensable method for fragmenting rock masses. Nevertheless, it can inherently induce many side effects like ground vibrations. At high intensities, the ground vibrations generated because of blasting operations can destroy structures and buildings. Also, in areas with adverse geological conditions, such vibrations can cause bench and

REPORT OF RELATING SURFACE COAL MINE SCALED

residential structure because of surface mine blasting vibration. Rupert and Clarks2 study relating surface blasting and underground coal mines states “It was postulated that the peak particle velocity for damage would be in the vicinity of 2.0 in./sec, depending upon the geologic structure, and the strength of roof, pillars, and the

Predicting the blast-induced vibration velocity using a ...

Jan 23, 2020 · Ground vibration is the most detrimental effect induced by blasting in surface mines. This study presents an improved bagged support vector regression (BSVR) combined with the firefly algorithm (FA) to predict ground vibration. In other words, the FA was used to modify the weights of the SVR model. To verify the validity of the BSVR–FA, the back-propagation neural network (BPNN) and

Assessment of Maximum Explosive Charge Used Per Delay

technique is data collection. In the present study, 120 blast vibration records were monitored at different vulnerable and strategic locations in and around the mines as per ISRM [18] standards. Among which, 100 blast vibration data sets were chosen for the training of the network and rest 20 data sets were used for the testing ANN of the

Building damage due to vibration from rock blasting ...

Nov 01, 2020 · In the 70's the Bureau of Mines conducted a series of field studies of ground vibration and air blast damages, . A total of 76 houses were monitored during production blasting performed in large surface coal mines, quarries and at construction sites. Threshold damages were reported down to PPV of 18 mm/s.

Blast vibration monitoring in opencast mines - ethesis

In this report the blast vibration monitoring techniques is studied. Ground vibration induced by blasting practices in mines has become a serious environmental issue in today’s scenario. Various factors influence the blast vibration being produced from the blasting practices such as the pattern of blasting, drilling pattern, quality and quantity of explosives being used, delay pattern etc.

Analysis of ground vibration risk on mine infrastructures ...

Sep 22, 2018 · Blasting operation is the main unit of ore production in open-pit mining cycle. Detonation energy is mostly released as ground vibration using Rayleigh waves that extensively damage nearby infrastructures within or outside of a mining area. This work introduces a new hybrid approach based on the integration of fuzzy failure mode and effects analysis with the fuzzy slack-based measure model ...

(PDF) ENVIRONMENTAL IMPACT OF MINE BLASTING

The blasting is the predominating method o f breaking rocks in various surface and underground mines. At the same time some damaging impacts on environment are evident: noise, gas, dust, flyrock ...

Evaluation of Blasting Efficiency in Surface Mines

Drilling and blasting are the major unit operations in opencast mining. In spite of the best efforts to introduce mechanization in the opencast mines, blasting continue to dominate the production. Beside the production in open cast mining blasting and vibration also cause environmental problem.

Development and Application of Blast Casting Technique in ...

Blast casting is a high-efficiency technique applied in surface mines for overburden removal and results in stripping cost savings. According to ballistic theory and center-of-mass frame basic movement principles, key factors influencing blast casting effect were analyzed, which include bench height and mining panel width, inclined angle of blast holes, explosive unit consumption (EUC), delay ...

Citizen's Guide to Coal Mine Blasting in Indiana

loading and detonation of all surface coal mine blasts. REGULATIONS Ground Vibration The ground vibration limits found in Indiana regulations were derived from considerable research conducted by the United States Bureau of Mines and the Office of Surface Mining, both of which are federal agencies. Much of this research was conducted in Indiana.

Blasting vibrations control: The shortcomings of ...

Dec 31, 1996 · A two-part study was conducted to determine the factors affecting the frequency and amplitude of blast-induced ground vibration. One part, conducted by the Photomechanics Laboratory of the Department of Mechanical Engineering of the University of Maryland, simulated and measured the surface displacements due to small explosive charges detonated on the surface of rock and a rock