Voyager II Quarry Blast and Vibration Management Plan REVISION 7 Page 1 1 Element/issue Introduction This document presents the Blast and Vibration Management Plan for the BGC Voyager II Quarry as required under Condition 18 of the Minister for the Environment Statement Number 706, (Condition 706:M18) dated 16 December 2005.
Blasting is a conventional technique for mining, but structures adjacent to open pit mines are often damaged by blasting vibration, therefore, durability and safety of these structures are affected. Damage characteristics of a threefloor frame structure on the top of an open pit mine under repeatedly blasting vibration is studied in this paper.
Structure response and damage produced by ground vibration from surface mine blasting. Bureau of Mines New York: US Department of the Interior. ... Support vector regression approach with different kernel functions for predicting blastinduced ground vibration: A case study in an openpit coal mine of Vietnam. SN Applied Sciences, 1(4), 283.
Explosives and Blasting Branch. The statutory responsibility of the Explosives and Blasting Branch is to maintain the safety of blasters in the Commonwealth and to protect the public from harmful effects of blasting operations. The branch is in charge of licensing blasters, answering and inspecting blasting complaints, seismograph monitoring,...
blast induced vibration and noise levels that at times restrict production outputs. Vibration monitoring has become an integral part of the mine/quarry operations and it is essential that the operators have confidence in the equipment that is used to measure
Blasting operations cause several adverse environmental effects and may result in safety problems. this study evaluates the impacts resulting from blasting operation on nearby buildings and structures as it generates ground vibration, air blast, and fly rocks. in this paper, first blasting operation and its possible environmental effects are defined. then the methods of blastvibration ...
Objective: In order to determine the blasting vibration safety criteria for slope rock mass scientifically and reasonably, the influence of stress waves on surficial rock mass of mine slopes was analyzed when stress waves propagate to the slope surface, and mathematical models for blasting vibration safety criteria are proposed based on the ultimate tensile stress criterion, the ultimate shear ...
Cut blasting tests carried out in an underground mine are used to compare the vibration of simultaneous blasting and shortdelay blasting. Subsequently, the related numerical modelling is performed to systematically study the influence of shortdelay intervals on blastinduced vibration.
Effects of the Blast Vibration Frequency on the Shear Strength of the Joints and Pit Slope Stability Ali Siamaki, Kamran Esmaeili, Bibhu Mohanty Lassonde Institute of Mining, University of Toronto, ON, Canada Blast induced vibrations are the blasting drawbacks which may cause instability in the adjacent and nearby structures.
The ground vibrations and air blast produced by blasting are often felt by residents surrounding the mines. There has been a trend for regulatory authorities, especially those concerned with the environment, to impose low limits on blast vibration levels in response to community pressure, based on human perception and response to vibration.
This paper deals with ground vibration induced by blasting and its impact on surface structures at two coal mines. Field data from production and single hole blasts were analysed to study the influence of controllable variables on peak particle velocity and frequency of ground vibration. Besides maximum charge per delay, studies at Kamptee
The blasting agent commonly used in coal mines is called ANFO, which is a mixture of Ammonium Nitrate (a common fertilizer), and fuel oil. (Dynamite is not typically used in surface coal mining to fracture the rock). After blasting, a dragline, shovels, trucks, or other heavy equipment remove the rocky overburden to expose the coal seam.
and vibration produced by blasting and are among the most stringent in North America. Effects of blasting The two effects of a blast that may be felt at an offsite location are: vibration in the ground, and concussion in the air (noise). Blasts are monitored and carried out in accordance with blast design studies. About Aggregates #7
Intensity of Blast Vibration The experimental study of vibration medium was performed for concrete geological conditions of the Ahtme mine. The function of blast vibration velocity attenuation is established for two extreme cases, for blasting depths 20 and 50 m [1].
The Bureau of Mines studied blastproduced 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.
This vibration magnitude is similar to the magnitude reported in a previous study in which safety of lowrise residential structures from vibrations generated by mining blasting was investigated [4]. In their study, surface cracks were observed whereas in the current study, a significant crack at the bottom of the structure was observed.
This study evaluates the impacts resulting from quarryblasting operation on nearby buildings and structures as it generates ground vibration, air blast, and fly rocks.
comprehensive study of ground vibration produced by blasting on tens of homes and hundreds of production blasts to reanalyze the blast damage criterion has been carried out. The United States Bureau of Mines (USBM) in RI 8507, concluded that particle velocity is .
Ground vibration is an undesired effect of blasting in mining. In some situations where geotechnical slope performance is of concern, blast design gains an increased relevance as a variable to consider in slope stability. Several methods are available to assess the vibration levels produced by blasting in a mine operation (surface and underground).
One of the major environmental concerns related to blasting operation in mining and civil engineering projects is ground vibration. The ground parameters should be taken into account by the prediction models, especially if the ground conditions have variable characters. In a blasting environment, this is usually possible by using an empirical method.
The Bureau of Mines performed a comparative study of nine sites at eight surface coal mines to determine if the presence of nearsurface underground abandoned workings resulted in the generation of adverse longduration, lowfrequency blast vibrations.
Ground vibration is an integral part of the rock blasting process in surface mines, which may cause severe damages to structures and plants in the nearby environment.
Blasting, Vibration, AlvandQoly, Limestone Mine, Analysing . 1. Introduction measurement of ground vibration considered potentially . In most of surface mines, blasting operation is the first element of the ore extraction process. The primary purpose of blasting is rock fragmentation and displacement of .