Vibrations induced due to blasting in mines may damage the nearby houses and disturb the habitants. ... In Indian mining industry, blast designs are fundamentally based on the experience and ...
Oct 01, 2014· Number of accidents as well as number of deaths and injuries due to blasting in Indian mines has been shown in Fig. 1, Fig. 2 (Directorate general of mines safety (DGMS), 2013, Directorate general of mines safety (DGMS), 2014). Flyrock is one of the intriguing problems in opencast mining. Download : Download full-size image; Fig. 1.
Mar 16, 2015· BLASTING ON A PRE-CUT FACE In many mines coal-cutting machines are used to provide an additional free face for blasting.While this may be under, over, middle or side cut, the most common practise in Indian mines is to have undercut face.
Partha Das Sharma (P.D.Sharma) is Graduate (B.Tech – Hons.) in Mining Engineering from IIT, Kharagpur, India (1979) He has very rich experience both in Mining operation and Marketing / Export / offering of Technical Services of Explosives & blasting, ANFO, Bulk explosives, Blast designing, Controlled Blasting etc. Visited number of countries in Africa, South East…
Blasting based mines in top rank in india Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Blasting based mines in top rank in …
Blasting in limestone mine, India. Footage taken 500m away from the site
Drilling and blasting are the major unit operations in opencast mining. Inspite of the best efforts to introduce mechanization in the opencast mines, blasting continue to dominate the production. Therefore to cut down the cost of production optimal fragmentation from properly designed blasting pattern has to be achieved. Proper adoption of drilling and blasting can contribute significantly ...
Nov 10, 2011· Copper mining in India. Web site Copper Mining in India and Mining Methods Open Cast and Under Ground Mining by N G Nair . Information Technology in Mining Industry. Copper Mining India (1980 - 2009). Blasting in Mines to improve fragmentation and reduce ground vibration. Blasting is an art or science?
MINING Engineering Interview Questions with Answers pdf Download :-. 1. Which cut is used for solid blasting in Indian coal Mines. Wedge cut. 2. Permitted explosives are safe to use because. Special chemical are used to extinguish the spark produced during blasting. 3. Burden is the distance between.
Sep 05, 2017· Mostly because of opencast mines, the noise comes out at the time of blasting and overburden (OB) removal. 32 Even the workers are working in the polluted environment where they have continuous exposure to noise, humidity, unhealthy ventilation, smell of chemical explosion, etc. and are becoming the adverse sections because of mining. 33
Drilling and blasting is the controlled use of explosives and other methods such as gas pressure blasting pyrotechnics, to break rock for excavation.It is practiced most often in mining, quarrying and civil engineering such as dam, tunnel or road construction.The result of rock blasting is often known as a rock cut.. Drilling and blasting currently utilizes many different varieties of ...
juries due to blasting in Indian mines has been shown in Figs. 1 and 2 (DGMS, 2013, 2014). Flyrock is one of the intriguing prob-lems in opencast mining.
Cast blasting is a type of blast design that uses the explosive energy to move overburden material across the pit. This technique allows approximately 25% to 50% of the rock to be moved without the use of mine equipment. This is a major cost savings to the mine. Although cast blasting requires more pounds of explosive for each cubic yard of rock
Blast Free Mining in Indian Surface Coal Mines – Current, Blast Free Mining in Indian Surface Coal Mines – Current Trend, In order to produce coal from surface mines …
Ground vibration induced by blasting is a serious environmental issue in Indian mines. With the increasing production targets from surface mining, it is likely to be compounded in future unless pro-active measures are taken to mitigate the problem. In response to the need of the
Apr 01, 2016· 1. Introduction. Rock fragmentation distribution influences a range of mining and milling processes including load and haul rates, crushing and grinding performance and ore recovery in beneficiation processes (Michaud et al., 1997).In opencast mining, where blasting is employed for excavation, the overall cost effectiveness of the production operations is compatible with optimization …
Ph.D. Mining Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad Rock Excavation, Rock Blasting, Control of Environmental Effects, Blast Fragmentation Optimization ...
Apr 06, 2020· In open-pit mining, cast blasting is carried out using higher P F of 30 to 40% for saving the costs incurred while handling broken muck [8, 10]. In cast blasting, a good throw is required to gain economic advantages . However, no literature is available on the topic to conduct directional blasting near sensitive structures such as railway track ...
blasting. 0.4 Assistance has also been taken from the cxperitnce of Natioral Hydroelectric Power Corporation, New Delhi, while preparing this revision of the standard. 1. SCOPE 1.1 This standard lays down the safety requirements for blasting and re!ated drilling cperations in locations other than mines. 2.
RE: Vacancy for the Mineral Development officer in Bihar state . Any Indian Citizen can apply but only Bihar resident wi... By Kuku Sharma, 1 year ago
Jan 01, 2015· Underwater Drilling and Blasting for Hard Rock Dredging in Indian Ports ... Dowding, C.H., 1980. Structure Response and Damage Produced by Ground Vibration from Surface Mine Blasting, U.S. Bureau of Mines, R.I. No. 8507, pp. 74. Tripathy, G.R., Gupta, I.D., 2002. Prediction of Ground Vibration due to Construction Blasts in Different Types of ...
Thus, conventional method of solid blasting in underground coal mines in India suffers from low pull and yield per blast leading to underutilization of men and machine at face which is the main reason for low production and productivity of Indian underground coal mines. The researchers and mine managements have realized that there is a definite ...
Jul 09, 2015· Ever wonder would it would be like to work and blast 400 feet underground in a gold mine? We take you there up-close and personal. We blast underground in ...
Apr 06, 2021· Air blasting in mining is a method of blasting in which compressed air at very high pressure is piped to a steel shell in a shot hole and discharged. It is often called air overpressure. An air blast is the airborne shock wave generated by an explosion. In underground mining, after an explosion a strong rush of air follows.
Sep 19, 2009· A video tape of each blast is simple and powerful recorded image that can easily be tagged and kept for future reference. Blasting Download page – Rules, Regulations, Research and Resources Blasting Principles for open pit mining Blasting Techniques in High Production underground metal Mines Controlled Blasting in Mines CORRECT BURDEN Explosives and Blasting in (Open …
Nov 13, 2012· Continuous mining is a most popular mining method in USA and Europe. Nearly 60% of coal mining in the West is through continuous mining process in underground mines. Continuous miner technology, which has of late been introduced in India, is able to extract 65–74% of the coal in a panel depending upon the seam parameters as against 50–60% by semi-mechanized Bord and Pillar …
National Institute of Technology Rourkela This is to certify that the thesis entitled " Optimization of Blasting Parameters in Opencast Mines " submitted by Sri Manmit Rout (Roll. No.: 10305019) and Sri Chinmay Kumar Parida (Roll. No.: 10305017), in fulfillment of the …
Rules, Regulations, Research and Resources. The Federal Surface Mining Control and Reclamation Act of 1977 requires that coal mine blasting be limited based on the site conditions so as to prevent: injury to persons, damage to public or private property outside the permit area, adverse impacts on any underground mine, and change in the course, channel, or availability of surface or ground ...
INDIAN COAL MINES" submitted by Sri Samrat Dutta in partial fulfillment of the requirements for the award of Bachelor of Technology degree in Mining Engineering at National Institute of Technology is an authentic work carried out by him under my ... villages near the mines, blasting is restricted as a result huge amount of coal is blocked.
Unpublished M. Tech Dissertation submitted to Indian School of Mines, Dhanbad, pp. 1–40 (1999) Google Scholar. 9. Dikshit, M.P., Singh, O.P.: Surface Miner operation – a cost effective, eco-friendly coal mining for mass production in opencast coal mines in India.
Jan 22, 2021· At least five mine workers were killed in southern India when their trucks carrying blasting material exploded, officials said on Friday. Local media said the toll could be higher.
The blasting is known as blasting-off-the-solid or, in short solid blasting. P5 explosive is used along with Carrick short delay detonators (of I.E.L) or coal delay detonators (of l.D.L.) Introduction of such blasting in mines needs approval from the D.G.M.S. for exemption under the following regulations: (a) Reg. 173- To blast off the solid.
drilling in open cast metal mines. ... drilling and blasting practices in iron ore ... drilling and blasting practices in iron ore mine in india 108 Views The Mining ... Read more. blasting in opencast iron ore mines. blasting pattern in opencast mines ... Bringing you the latest news, research, information and search results on opencast ...
Jul 10, 2021· However, there is a need for the site-specific estimation suited with the strata condition for estimation of optimum burden at the blast faces having huge variations in the rock types. Two different approaches have been used in this paper for computation of optimal burden of different rock strata of an Indian iron ore mine.
neighbouring surface mine blasting is important for the safety of underground structures in terms of pillar Corresponding author: Ajay Kumar Jha, Ph.D., research fields: rock blasting in mines and construction. spalling, roof collapse and junction failure and is normally …
Bench blasting is a common blast technique m ost often used for open pit mines. By definition, bench blasting is blasting in a vertical or sub-vertical hole or a row of holes towar ds a free ...