Blast Personnel Training: Providing comprehensive training to blasting personnel is crucial in ensuring safe and responsible blasting practices. This includes educating them on proper blast design, loading techniques, stemming procedures, standards and regulations, and the use of protective measures to minimise the risks of …
Blasting practices in underground mines has limited flexibility due to many safety criteria, statutory and field constraints. This has narrowed the scope of major modifications in the solid ...
Please cite this article as: Singh PK, Roy MP, Paswan RK, Sarim M, Kumar S, Jha RR, Rock. fragmentation control in opencast blasting, Journal of Rock Mechanics and Geotechnical Engineering. (2016 ...
An airblast, or windblast in a mine, can be defined as a rapid displacement of large quantities of air, often under pressure, in a constrained underground environment caused by a fall of ground or other material. 1 This phenomenon can affect caving operations in both coal and non-coal mines.2., 3. Windblast in coal mines is mainly of …
Blasting Practices in Mines Home ; ... Author: partha das sharma. 37 downloads 567 Views 453KB Size. Report. DOWNLOAD .PDF. Recommend Documents. Blasting Practices in Mines Most rocks and ores require blasting to break them into smaller particles before an excavation takes place in mining operations. Explosive materials are …
To evaluate the magnitude of blasting vibrations, it is important to consider PPV as a fundamental critical base parameter practice in terms of vibration velocity.
Mining activities and civil projects are carried out using one of the most important operations, namely rock blasting, as a wide and economical way to rock breakage and displacement of them 1.In ...
Blasting Practices in Mines Author: Partha Das Sharma (B.Tech-Hons. In Mining Engg.) E.mail - [email protected] and [email protected] 1. Introduction – Most rocks and ores require blasting to break them into smaller particles before an excavation takes place in mining operations. Explosive materials are tools that benefit mankind, when used ...
Surface mines primarily use drilling and blasting, which is an effective and relatively inexpensive method to excavate the hard rock mass. The geometry of surface mine bench blasting has a ...
ROCK BLASTING FOR MINING. Prof. A. Balasubramanian. Centre for Advanced Studies in Earth Science. University of Mysore. Mysore-6. Objectives: You are all aware that Mining is a major econom …
-----Author: Partha Das Sharma, E.mail: [email protected] 3 Fig – 1(A) Fig – 1(B)-----Author: Partha Das Sharma, E.mail: [email protected] 4 Fig – 2 As mentioned, with long hole drilling, blasting practice has advanced considerably with increasing use of stronger new generation emulsion explosives along with use of precise and accurate ...
Design and general practice of mass blast in underground open stopping mining method 11 Q. Liu Improving pit wall stability by minimizing blast damage vis a vis rock characterization at RAM 21 P.K. Rajmeny, R. Shrimali, L.S. Shekhawat & A. Joshi New physical findings revolutionize the drilling and blasting technology as well as the
Blasting Practices in Mines Author: Partha Das Sharma (B.Tech-Hons. In Mining Engg.) E.mail - [email protected] and [email protected] 1. Introduction – Most rocks and ores …
Blasting practices in mines have undergone many changes in the recent past and continue to be honed and reconfigured to meet the demands of today's mining needs. This volume compiles papers of the workshop Blasting in Mines – New Trends, hosted by the Fragblast 10 Symposium . The 17 papers provide a mix which highlight the evolving …
Abstract. The state-of-the-art blasting methodologies have been developed over the years to overcome the challenges of underground mining. The major challenges associated with Indian underground mines include ore dilution and narrow vein mining. The productivity enhancement from underground is another challenge, as most of the …
-----Author: Partha Das Sharma, E.mail: [email protected] 3 Fig – 1(A) Fig – 1(B)-----Author: Partha Das Sharma, E.mail: [email protected] 4 Fig – 2 As mentioned, with long hole drilling, blasting practice has advanced considerably with increasing use of stronger new generation emulsion explosives along with use of precise and accurate ...
4. Sublevel stopping with Long Blast Holes: Demand for increased rate of production coupled with improvement in drilling technique has lead to the use of long hole blasting for ore extraction from Underground Metalliferous mines. Considerable advances have been made by introduction of long-hole and precise drilling in stopes. Today, most …
A comprehensive analysis of blasting data of opencast mines has been conducted for variations in basic design parameters like burden, spacing, stemming and specific charge. 354 data sets of 19 ...
P.D. Sharma. P.D. Sharma. ... The research results should have a positive impact on hazard awareness, prevention, and safe blasting practices in mining and construction industries.
This paper discusses the wind blast / air blast phenomenon, how it is managed in coal mines and how it might best be managed in other underground mines. L'article qui suit a pour objets de decrire le phenomène de tir a l'air comprime et les methodes de moderation de celui-ci dans les mines de houille, et d'indiquer de quelle …
The mine practices conventional mechanized mining deployed with Hydraulic Excavator of 2.6 m 3 bucket capacity in conjunction with 40 T haul trucks, one rock breaker & two drill machines of 115-mm diameter each. The overburden bench is prepared by drilling and blasting after the topsoil has been excavated to a thickness of 1 …
J.C.W. Fowler, B.K. Hebblewhite, and P. Sharma, Managing the hazard of wind blast/air blast in caving operations in Australian underground mines, 10th ISRM Congress, on, 2003. Block caving ...
Along with that, a blast fragmentation analysis is conducted for the rock pile images of a blasting site collected from Dongri Buzurg Mine (MOIL), India using the image processing technique in ...
----- Author: Partha Das Sharma, E.mail: [email protected] 5. Fig – 2. As mentioned, with long hole drilling, blasting practice has advanced considerably with increasing use of stronger new generation emulsion explosives along with use of precise and accurate millisecond NONEL / Electronic delay detonators for obtaining better …
The blasting methods used are as follows: a) Electric blasting. 4.2 Surface Mining b) Blasting with safety fuse and plane detonators. c) Blasting by detonating cord. d) Nonel blasting. Surface Mining is the one, which attracts maximum attention due to its adverse environmental impact. Widely seen problems that are
Blasting is a common practice in most mines, and offers the most economical and flexible means of accessing the orebody in a hard rock mine (Sellers, 2011). In hard rock mining activities ...
Methods in Hard Rock Mines Rajnikant, Paul P S, Kher A A and Kumar D RPAMI-MWB-05 Estimation of Coal Pillar Strength Using Empirical and Numerical Approaches for Board …
Article. Techniques of controlled blasting for mines, tunnels and construction workings - To mitigate various blast induced adverse effects. June 2010. Authors: P.D. …
In the year 2018 -19, National coal output from o/c mining was around 94% (686.75Mte) and the. same from u/g mining was around 6% (4 1.01). Coal production from opencast is gradually in an ...
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 …