Safety Analysis Of Open Blasting
Discussion on blasting vibration monitoring for rock …
Drill and blast is a commonly used method for rock slope excavation in hydropower engineering. During blasting excavation of rock slopes, far-field vibration monitoring on the first upper berm for statutory compliance is usually performed to control the blast-induced rock damage to the final slope face. In this study, for the rock slope excavation in the Jinping-I …
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Advanced Analytics for Drilling and Blasting | SpringerLink
Table 11.2 presents typical blasting parameters in open-pit mines . Table 11.2 Open-pit production blast parameters Full size table ... data analysis and analytics tools play a key role in data collection, storage, data cleaning, and analysis in mining operations. ... Safety Science 48 (3): 319–325.
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Safety Analysis of Lining Structure Influenced by Blasting of …
In order to ensure the safety of the Daling tunnel with extralarge section and small space, the three-dimensional model of blasting dynamic simulation had been established and verified.
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Safety Analysis of Lining Structure Influenced by Blasting of …
4.2. Analysis of Influencing Factors of Tunnel Safety Influenced by Blasting Vibration. From the above analysis, it could be seen that the blasting of the Daling tunnel was very likely to have …
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ANALYSIS OF SLOPE STABILITY AND ELEVATION …
ANALYSIS OF SLOPE STABILITY AND ELEVATION EFFECTS IN OPEN-PIT BLASTING BASED ON ENVIRONMENTAL SAFETY Author Name Author Affiliation Abstract Slope stability is a way of analyzing how much stress a …
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Analysis on monitoring and controlling techniques about blasting …
The blasting for bedrock excavation on land for open channel project has a great influence on lock gate in Taishan Nuclear Power Station, therefore, based on blasting vibration monitoring data, the attenuation law of blasting vibration signal has been studied through regression analysis of practical test data by Sadaovsk empirical formula and corresponding …
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Influence of ring blasting pattern on the safety of nearby
Longhole stoping is a productive exploitation technique for underground metalliferous deposits. The method consists of deep-hole blasting with increased explosive charges to excavate larger volume of ore from a single blast. However, large scale blasting produces hazards in terms of blast-induced vibration. The underground structures viz. …
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Modeling Study on Cumulative Damage Effects and Safety …
Drilling and blasting method used for excavation causes damage to surrounding rock mass, and frequent blasting often leads to cumulative damage effects. Thus, …
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Summary of Surface Blasting and Damages with Analysis …
Values of the blasting coefficient can be 9 to 15 for quartzite, between 10 and 17 for most igneous rocks like granite and basalt, and range from 17 to 23 for sedimentary rocks such as limestone (USACE 1972). The blasting coefficient is a good indicator of the degree of spalling, with a higher number indicating greater spalling in the rock.
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Safety Evaluation and Application of Blasting Vibration …
Science-based and accurate means for the evaluation of vibration caused by blasting are important for controlling hazards associated with blasting. This paper proposes a …
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Vibration Safety Criteria for Surficial Rock Mass of Open Pit …
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 …
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An introduction to Chinese safety regulations for blasting …
By reviewing the development history and the state-of-art, this paper introduces Chinese safety regulations for blasting vibration for adjacent structures and equipments, as well as for structures themselves under blasting operation, such as high rock slopes, underground caverns, foundation rock masses, and fresh concrete. The mechanism of failures or damages …
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An Overview of Blasting Operations and Possible Techniques …
Blasting is accompanied by a number of side effects that have a negative impact on the environment, such as ground vibration, flyrock, AOp, and backbreaks [33, 42].These effects are more severe if they are carried out in close proximity to residential buildings, factories, offices or if they are improperly designed [].Proper designing of a blasting operation plays a …
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Analysis of blasting vibration duration considering …
Tunnel excavation blasting operations often result in important negative impacts. The negative effects of blasting-induced blast earthquakes, in particular the hazards caused by blast earthquakes to surrounding buildings and facilities, are receiving increasing attention and emphasis [1].Reducing the vibration hazards caused by blasting has been a research hot spot.
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Predicting ground vibration during rock blasting using
Choudhary, B. S. & Agrawal, A. Minimization of blast-induced hazards and efficient utilization of blast energy by implementing a novel stemming plug system for eco-friendly blasting in open pit mines.
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JSA Blasting and Coating KP 69.4 | PDF
This document provides a job safety analysis for blasting and coating work on a 48-inch pipeline. It outlines potential hazards at each step, including exposure to dust and noise during grit blasting, and recommends procedures to control …
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Effect Of Open-Pit Blasting Vibrations on a Hanging-Wall …
In order to study the propagation law of blast vibration in soft rock tunnels, Chen et al. [11] carried out an analysis and research on the measured data by blast vibration tests and used ...
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Protecting Workers from the Hazards of Abrasive …
Consultation Program for advice on safety and health issues. DSG FS-3697 09/2014 This is one in a series of informational fact sheets highlighting OSHA programs, policies or standards. ... the blasting materials on safety data sheets (SDS) as required under OSHA's Hazard Communication standard (29 CFR 1910.1200).
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Stability Analysis of Blasting Excavation for High Rock Slope …
In addition, the maximum peak velocity at 80 m at the top of the slope was 1.8 cm/s, which is less than the safe peak value of 2.5 cm/s specified in the Blasting Safety Regulations, indicating that the use of millisecond blasting has a lesser impact outside the blasting area and meets the safety requirements.
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Response Characteristics of Slope Subjected to Blasting: A
Frequent production blasting is an important factor affecting the slope stability in open-pit mines; thus, it is essential to monitor and analyze blasting vibrations in open-pit mines. In this study, blasting vibration on the slope of an open-pit gold mine in Manaoke was monitored. First, regression analysis was performed on the monitoring results using the Sadowski …
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Blasting Safety – Revisiting Site Security
During 1978-2003, blast area security accounted for 41% of all blasting related injuries reported by surface mines. The corresponding figure for underground mines was 56%. The data …
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Controlled Blasting: Enhancing Safety & Productivity with
Pre-splitting blast at a Coal Mine ERG Industrial. Safety & Wall Stability. Ensuring stable high walls is of utmost importance in any project, be it open-pit mines, quarries, or civil engineering endeavours. Pre-splitting is a technique used to establish a secure boundary between the blasted material and intact rock.
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Continuous Monitoring and Improvement of the Blasting Process in Open
The current techniques used for monitoring the blasting process in open pit mines are manual, intermittent and inefficient and can expose technical manpower to hazardous conditions.
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USING FAULT TREE ANALYSIS TO FOCUS MISFIRING AT OPEN PIT MINES BLASTING
The analysis identified basic and intermediate events that led to the misfiring of open pit mines blasting operation and graphically depicted the interrelationship between these various ...
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Protecting Workers from the Hazards of Abrasive Blasting Materials
Safety Precautions While Blasting. Here are the key safety considerations BICs and blasting crews should consider while shooting the blast: A red flag will mark the blast area for everyone's safety. Evacuateall …
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Evaluation and Risk Analysis of Open-Pit Mining Operations
Mining of raw materials is a process that consists of several stages. In open-pit mining, material with high compressive strength is extracted by drilling and blasting and material with low compressive strength is extracted by e. g. a bucket wheel excavator. Most important influencing factors for crusher decision are compressive strength, moisture content, capacity of …
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Section V: Chapter 3
B. Vacuum Blast Cleaning. Vacuum blasting is a variation of open abrasive blasting. In this configuration, the blast nozzle has local containment (a shroud) at its end and containment is …
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Blasting Vibration Safety Criterion Analysis with Equivalent …
1. Introduction. With the rapid infrastructure development in China, the improvement of control level on the blasting technique, and the well adaptability in various engineering, the blasting …
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Understanding The Risks of Flyrock in Mine and …
A critical analysis of recent research into the prediction of flyrock and related issues resulting from surface blasting activities. The Journal of the Southern African Institute of Mining and Metallurgy, 120(12), pp. 701-714.
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Controlled Blasting Within Danger Zone of 500 M From
The study was conducted to develop controlled blasting patterns for safe blasting operations within the blasting zone of 50–100 m from the nearby dwellings. In order to minimize ground vibrations, three methods (1) Reduced burden and spacing with shorter hole depth, (2) Modified decoupled charged using plastic pipes and (3) Pre-fracture line ...
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