Blasting Safety – Revisiting Site Security by T. S. Bajpayee, Harry C. Verakis, and Thomas E. Lobb . Abstract . Significant progress has been made in the reduction of serious injuries and fatalities resulting from mine blasting operations. Despite the progress, injuries and fatalities continue to occur. A leading cause of

Open-pit mining is to be considered one of the most dangerous sectors in the industrial world. It causes significant effects to miners health, as well as damage to the ecological land. Open-pit mining causes changes to vegetation, soil, and bedrock, which ultimately contributes to changes in surface hydrology, groundwater levels, and flow paths.

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 …

Blasting - Courses and Live Webcasts. Online courses, short courses and live webcasts about Blasting for mining and geoscience from Edumine.

Open cast mining is a surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or borrow pit. Walls of the pit are generally blast mined, creating ground vibrations and resulting in dust generation and water, air, and noise pollution.

Our community is highly affected by their blasting operations as it results in high noise, dust, fume levels, polluted water, heavy blasting vibrations and bad traffic caused by their trucks during their blasting time which is scheduled at 5pm during week days.

Open pit mines can be used in coal mining, and they are used extensively in "hard rock" mining for ores such as metal ores, copper, gold, iron, aluminum, and many minerals. In a open pit coal mine, the pit bottom would be the bottom mined coal seam elevation, since it is usually feasible to extract multiple seams when surface mining coal.

Jun 14, 2018· Experiments showed that, the amplitude of stress waves in rock mass due to two-primer placement in a blasthole was much greater than the double of the amplitude of the waves caused by one single primer in a similar blasthole. These experiments indicate potential applications of a two-primer placement in rock blasting.

Frequently Asked Questions Why do I feel the blasting? Most of the energy from a blast is used to break rock, but some energy will travel from the blast site in the form of ground and airwaves. Each of these can cause your house to vibrate or shake. Humans are very sensitive to all vibrations.

The distinctive argument in the case of blasting induced vibrations in opencast mining is the fact that the parameters of the source of vibrations are known, and can be changed and adapted to the existing restrictions. In other words, the source of vibrations can be controlled [1-4].

Abstract. Ground vibration (PPV) is one of the hazard effects induced by blasting operations in open-pit mines, which can affect the surrounding structures, particularly the stability of benches and slopes in open-pit mines, and impact underground water, railway, …

Apr 24, 2018· Chingola's Buntungwa ward Councillor Solo Mumba says over 26 houses in his have been damaged after a blast at the Konkola Copper Mines Nchanga Open Pit mine. Mumba, who has in the recent past been critical of blasts at Konkola Copper Mines Nchanga Open Pit, said the activities have led to many cracked houses in Njanji area.

Ak et al. (2009) presented and analyzed the results of ground vibration measurement induced by 43 bench blasting events at an open-pit mine consisting of older metamorphic rocks in Turkey. Badal (2010) analyzed data of blasting operations at open cast coal mines in Rairarh, Chhattisgarh, India.

Measurement of blast damage Introduction Although blasting remains the most inexpensive method of fragmen­ tation in hard-rock mining, the signifi­ cance of the costs of blast-induced rock-mass damage in terms of mining efficiency and safety is becoming in­ creasingly recognized. Blast-damage measurement must account for the

Blast vibration effects in an underground mine caused by open-pit mining Article (PDF Available) in International Journal of Rock Mechanics and Mining Sciences 80:79-88 · September 2015 with ...

People can detect vibration at much lower levels than those that would cause even superficial damage to the most susceptible structures. Use of the criteria set out in this guideline will help minimise the annoyance and discomfort that can be caused by blasting for activities such as mining, quarrying, construction and other operations.

during the whole life of the mine. By monitoring of the blasting seismic influence in first years of the mine's work, as well as by using recorded vibration velocities, mathematical dependence of the important parameters can be defined. Additionally, the level and laws of distribution and intensity of the seismic activity can be defined.

Research Article Research on Effects of Blast Casting Vibration and Vibration Absorption of Presplitting Blasting in Open Cast Mine LiMa, 1,2 KeminLi, 2 ShuangshuangXiao, 2 XiaohuaDing, 2 andSydneyChinyanta 2 State Key Laboratory for Geomechanics & Deep Underground Engineering, China University of Mining and Technology,

Such values can cause damage to the nearby structures when a specific PPV value is reached by blasting. Moreover, it has been demonstrated in this study that all over pressure magnitudes are less than 134 dB, which is the safe limit of air blast level. Ground Vibrations and Air Blast Effects Induced by Blasting in Open Pit

Ground vibrations produced by surface and near-surface explosions Donald G. Alberta,⇑, Shahram Taherzadehb, Keith Attenboroughb, Patrice Boulangerc,1, Stephen N. Decatoa a U.S. Army ERDC Cold Regions Research and Engineering Laboratory, 72 Lyme Road, Hanover, NH 03755-1290, USA bFaculty of Mathematics, Computing, and Technology, The Open University, Milton Keynes MK7 6AA, UK

vibrations. These vibrations can cause damage to buildings and other infrastructure in the vicinity of the works, and can be a nuisance for their inhabitants. The article presents the problem of paraseismic vibration analysis, as induced by blasting works carried out in open-cast mines, using

Aug 24, 2009· Explosives and Blasting in Mines to Increase the Production, control Fragmentation and Reduce Ground Vibration. Mining Technology,

BLAST VIBRATION STUDIES IN SURFACE MINES ... BLAST VIBRATION STUDY AT OPEN CAST COAL MINE ... Blasting vibrations may also cause a significant damage to nearby buildings or various structures. In this project blast vibration study is done and …

Markéta Lednická and Zden ěk Kaláb : Vibration response of waste rock dump in open pit mine caused by blasting operation 72 Only the mined out part of the quarry was at the disposal of waste rock deposit. The dump had four levels at the time of performed seismological measurement (Fig. 1, 2), the height of the dump was about 23 m, and

Air-blast overpressure is one the harmful effects of blasting operations in open pit mine. It can cause vibration in buildings, houses, broken the glass door system and structural damage ...

Singh has made notable contributions in Explosives Science and Blasting Technologies to solve practical problems in the mining industry encompassing the fields of optimal use of explosives energy in rock fragmentation, explosives energy partitioning, blast vibrations, wall-control, fragmentation control, blast design in mines and tunnels, pre ...

Home Mining Consultant My Last Working Day on 19.09.2009 at Hindustan Copper Limited . Ground Vibration and Air blast. It is common for measurements of ground and air vibrations to be made during blasting, to ensure compliance with statutory requirements.

The impact energy produced by blast casting is able to break and cast rocks, yet the strong vibration effects caused at the same time would threaten the safety of mines. Based on the theory of Janbu's Limit Equilibrium Method (LEM), pseudo-static method has been incorporated to analyze the influence of dynamic loads of blasting on slope stability.