blast vibration studies in surface mines

A technical evaluation of the benefit of

will have a 22 000 m2 exposed surface for its 200 000 m3 volume. If the average block was 0.5 m3 [10.6 ft3] in volume and cubic in shape (0.8 m 0.8 m 0.8 m [2.6 ft x 2.6 ft x 2.6 ft]) only nine per cent would be available for measurement (D. La Rosa, D. Thornton, 2011. Boundary Conditions: The final input into any blast model will be the boundary conditions of the blast. Get price

Blasting and Explosives Quick Reference Guide 2010

These rules provide a first estimate in the absence of any better data. Blast hole diameter in mm ≤ 15 x Bench height (BH) in metres Bench height (BH) in metres ≥ (Blast hole diameter (D) in mm)/15 Burden (B) = (25 to 40) x (D) Spacing (S) = 1.15 x B (This gives an equilateral pattern) Subdrill = (3 to 15) x D Charge length (C) ≥ 20 D Stemming ≥ 20 x D or (0.7 - 1.2) x B Get price

Frequently Asked Questions

What are safe vibration standards for blasting near homes? In North America, safe vibration standards are based on scientific studies conducted by the U.S. Bureau of Mines (USBM). These studies recommend ground and air vibration limits based on scaled distance, peak Get price

Blast vibration effects in an underground mine caused by

Dec 01, 2015Study was carried out with the existing blast designs practiced in the mine as well as with modified blast design to achieve the objective of the study. The open-pit mine works with shovel–dumper combination deploying large sized heavy earth moving machines like 34 m 3 shovels and 220 tonne trucks navigation with Truck Dispatch System (TDS). Get price

BLAST DESIGN IN SURFACE MINES

BLAST DESIGN IN SURFACE MINES. Objectives of Blast Design. Obtaining optimum fragment size Proper degree of fragmentation to achieve the lowest combined cost of mining Utilising explosives energy properly through suitable blast design in the mines Controlling the unwanted effects of blasting Minimising the environmental impacts Get price

Design of surface blast

Sethi N.N. Dey N.C.A stimulated studies on blast design operation in open cast-iron ore mine, The Indian Mining Engineering Journal, January 2004, pp.17-23. 7. Adhikari G.R. and Venkatesh H.S. An approach for optimizing a blast design for surface mines, The Indian Mining Engineering Journal, February 1999, pp.25-28. 8. Get price

v115n7a10 Peak particle velocity prediction using support

major advantages of the method. Although the case study was for a large surface mining operation, the methodology is applicable to all other surface blasting projects that involve a similar procedure. Keywords blast-induced ground vibration, peak particle velocity, support vector machine, surface mining. * Department of Mining and Nuclear Get price

Analysis of blast

The blasting operation is vital in the construction of tunnels and channels or in mining when encountering hard geological environments to facilitate the progress of a project. The level and range of damage due to the blast are affected by the energy of shock waves generated after explosion. The control of seismic damage is a major issue in blasting engineering and cannot be neglected. Get price

The Use of Microseismic Acquisition for Vibration

3.2 Case Study Three – Vibration Monitoring Near a Mine Site. Case study three took place at a hard rock mine in Canada where blast vibrations were a concern to public housing. A portable Paladin vibration monitoring system was installed in the basement of a residential house approximately 2.5 km from the mine. Get price

Case Study Managing Risk in Blasting near Sensitive

The blast was fired on time at 3:11pm Friday the 11th December 2009, and caused no delay to other mining operations at the site. With 1029 detonators, it was the largest single Uni tronic™ blast fired in the world at the time. The blast behaved as expected with controlled surface expression. The basalt moved out from the free face Get price

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. These results were Get price

Blasting and Explosives Quick Reference Guide 2010

These rules provide a first estimate in the absence of any better data. Blast hole diameter in mm ≤ 15 x Bench height (BH) in metres Bench height (BH) in metres ≥ (Blast hole diameter (D) in mm)/15 Burden (B) = (25 to 40) x (D) Spacing (S) = 1.15 x B (This gives an equilateral pattern) Subdrill = (3 to 15) x D Charge length (C) ≥ 20 D Stemming ≥ 20 x D or (0.7 - 1.2) x B Get price

Effects of Blast Vibrations on Residential Structures: A

In 1980 the USBM published RI 8507, Structure Response and Damage Produced by Ground Vibration From Surface Mine Blasting. This report contained a comprehensive study of how residential structures react to blast generated vibrations. Prior to RI 8507, vibration-limiting criteria were based on a single peak particle velocity value. Get price

Assessment of Blasting

In an open-pit mine slope, rock mass has multiple joint structures and blasting operations have an obvious influence on its stability. Therefore, accurately predicting the blasting vibration is necessary to ensure slope stability. In this study, the blasting vibration signals monitored at a blasting site with different rock masses were used to investigate the attenuation characteristics of Get price

Propagation of Ground Vibrations Due to Explosives

Mar 09, 2010(Olofsson)br /Pal Roy, 2005 P. Pal Roy, Rock Blasting Effects and Operations, Balkema Publisher (2005). (Pal Roy)br /United States, and D. E. Siskind. 1980. Structure response and damage produced by ground vibration from surface mine blasting. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines. Get price

Development and Application of Blast Casting Technique in

blasting research attended a conference, held at the Bureau of Mines facility at College Park, Maryland. As a result, a comprehensive research program on blasting vibrations and their effects on structures was developed and initiated by the Bureau. The major objectives of this program were 1. Get price

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. Get price

Monitoring of blast

Wiss J. F., Linehan P. W. Control of Vibration and Air Noise from Surface Coal Mines-III. US Bureau of Mines Report OFR, 1978, p. 623. Khandelwal M., Singh T. N. Prediction of blast-induced ground vibration using artificial neural network. International Journal of Rock Mechanics and Mining Sciences, Vol. 46, Issue 7, 2009, p. 1214-1222. Get price

Blasting in Mines

Techno-economic assessment of drilling and blasting parameters vis-a - vis establishment of cost effective optimum blast pattern for open cast mines. MT/92 CMRI 1997 10.50 6 Evaluation of damages to underground coal mines caused by surface blasting vis-a-vis establishment of blast vibration threshold MT/93 CMRI/CMPDI 2000 44.32 7 Get price

Monitoring of blast

Blast-induced ground vibration (BIGV) is an undesirable environmental issue in and around mines. Usage of a high amount of explosive causes ground vibrations that are harmful to the nearby habitats and dwellings. In this paper, an attempt has been made to monitor the BIGV with low-cost wireless sensor network (WSN) and prediction of peak particle velocity (PPV) using an artificial neural Get price

Predicting Blast

Dec 24, 2019Predicting Blast-Induced Ground Vibration in Open-Pit Mines Using Vibration Sensors and Support Vector Regression-Based Optimization Algorithms. Nguyen H(1), Choi Y(2), Bui XN(3)(4), Nguyen-Thoi T(5)(6). Author information: (1)Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam. Get price

Blast design for improved performance and reduced surface

Blast design for improved performance and reduced surface vibration – a case study. Mashukov, IV 2014, 'Recording of seismic vibrations generated by large-scale underground blasting,' Mining Information and Analysis Bulletin, no. 4, pp. 216–221. USSR State Committee on Construction 1985, Construction Norms and Regulations SNiP 2.01 Get price

Predicting Blast

Dec 24, 2019Predicting Blast-Induced Ground Vibration in Open-Pit Mines Using Vibration Sensors and Support Vector Regression-Based Optimization Algorithms. Nguyen H(1), Choi Y(2), Bui XN(3)(4), Nguyen-Thoi T(5)(6). Author information: (1)Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam. Get price

Noise and Vibration

KCGM monitors ground vibration due to blasting at six reference locations between the Fimiston Open Pit and Kalgoorlie-Boulder and at eight locations around Mt Charlotte Underground Mine. Vibration caused by a blast is recorded when ground vibration exceeds the set trigger level of 0.2 mm/sec, and is referred to as a blast "trigger event". Get price