Abstract Construction and mining industry spends heavy coins on blasting technology, explosives and their safe detona-tion, from India's perspective safe blasting holds even more important stand. In India, around 90% of production comes from surface mines. In any surface mine, blasting is a crucial operation.
اقرأ المزيد
Canadian Mining Journal Staff | May 1, 2009 | 12:00 am. Drilling and Blasting are probably two of the more attention-grabbing words used in all of mining. After "Exploration and Development," nothing else describes what's happening more clearly than the combination of the words "drill" and "blast.". Drilling, without question, is ...
اقرأ المزيد
India. 6Department of Civil ... n Number of drilling holes N Number of datapoints ... During the release of waves from explosive detonation, mine blasting activities cause ground …
اقرأ المزيد
Blasting in mining is a chemical and physical process that occurs through the firing of explosives. It breaks mineral-bearing materials. These materials can be coal, ore and mineral stone. Blasting fragments materials, splits off rock blocks, and demolishes existing structures. The process of blasting goes through blast design prior any ...
اقرأ المزيد
It is usually preceded by drilling operation. Blasting is achieved with the aid of explosive capable of releasing very high energy when detonated. Part of the explosive energy released at the detonation font actualizes the actual splitting/fragmentation of ... (2010) Blast vibration studies in surface mines. PhD Thesis. India; National ...
اقرأ المزيد
1. Introduction. Mining activity is mostly represented by these four main operations: drilling, blasting, loading and hauling. For a proper mine planning and design, all of these operations need to be carefully planned in such a manner that can prevent extra loads such as operating costs, environmental footprints, etc. Amongst these operations, …
اقرأ المزيد
Normal dragline blast of Jayant opencast project consists of detonation of 3-8 rows involving 16-70 blastholes in a round. ... Pradhan, G.K., (2002), "Surface mine drilling and blasting: the Indian scenario", The Indian Mining & Engineering Journal, December, pp.23-28. B. Ravi kumar Student 5 Department of Mining Engineering, Godavari ...
اقرأ المزيد
Across the globe, mining activities have either direct or indirect association with air pollution. 34 Although the effect of mining, ie, opencast and underground, varies, the negative impact of opencast coal mining is much higher than that of underground mines. The activities such as drilling, blasting, and transportation are the central cause ...
اقرأ المزيد
Proper management of blasting operations ensures timely operations, reduced construction costs and benefits downstream operations overall. Maintaining blasting schedules and reducing blasting costs can deliver …
اقرأ المزيد
projects. In surface mining, production begins with drilling and blasting as the main operations. The production cycle is continued by loading, haulage, and crushing the fragmented materials, which ad-dressed as the subsequent operations. The output of the blasting operation can affect the subsequent operations. Figure 1 indicates the general ...
اقرأ المزيد
Our comprehensive mining consultancy services include mine due diligence, geological, geochemical, geophysical surveys, resource modeling, mine planning and mineral processing that cater to the needs of all stages of mineral exploration and mining projects for wide range of metallic and non-metallic mineral commodities such as iron ore, …
اقرأ المزيد
Explosives are probably the most cost-effective method of rock excavation in underground mining operations 1,2,3.Tunnel and underground rock excavation have largely relied on drilling and blasting ...
اقرأ المزيد
Development of pre-split blast designsfor Rampur Agucha Mine of Hindustan Zinc Limited to achieve final stable wall which has made the mine as the deepest opencast mines in India. Designing of drilling and blasting methodology for tunnels, underground powerhouse caverns and open excavation works in more than 20 prestigious …
اقرأ المزيد
February 2017. K. D. Dill. S. D. Rosenthal. This project analyzed the efficiency of incorporating the use of directional drilling technology into coal overburden blasting. Directional drilling is ...
اقرأ المزيد
Blast hole drilling is a method of drilling used to clear out large amounts of the earth and make the minerals below easier to access. It involves the drilling of holes into the earth. Explosive charges are then placed into each hole and detonated. After the explosion, the broken material is cleared and, if the drilling and blasting occurred ...
اقرأ المزيد
The surge in energy consumption in India has more than doubled since 2000. Over 80% of India's energy needs are met by fuels such as coal, oil, and solid biomass, with coal remaining the dominant source to meet the increasing demand [].As a result of rapid industrialization and the growing energy requirements, new coal mining …
اقرأ المزيد
A large number of burnt rocks in some open-pit mines in Xinjiang, Inner Mongolia and Ningxia have a great influence on the blasting effect. For this kind of rock, through the analysis of physical ...
اقرأ المزيد
The approach taken towards understanding explosions in the mining industry may best be described as 'trial and error', but a new team of scientists is setting out to change this. Using advanced computational modelling systems, Blue Dog Scientific is shedding light on some of the intricacies of rock blasting, with explosive results.
اقرأ المزيد
Each small cartridge package contains 0.3 kg of explosives. The blasting was performed on 27 September 2022. The blasting cycle and destress blasting were performed simultaneously. The blasting footage was 2 m. Within half an hour of the blasting, two high-energy events occurred 3 m away from the new tunnelling face, but …
اقرأ المزيد
The blast induced ground vibration also needs to be controlled as large amount of explosives were detonated in the dragline benches. Normal dragline blast of Jayant opencast project consists of …
اقرأ المزيد
The mining method adopted for the excavation is drilling and blasting for dragline as well as shovel benches. The blast-induced ground vibrations (BIGV) …
اقرأ المزيد
The details of blasts conducted is mentioned in Table 1. 4.2 Blasting with dEtonating FusE and cord rElay A total number of 9 different production blasts are conducted at Khadia mines using ...
اقرأ المزيد
intelligent tool for control blasting in Indian mines Hemant Agrawal*, A.K. Mishra Department of Mining Engineering, Indian Institute of Technology (ISM), Dhanbad …
اقرأ المزيد
Underwater blasting, often known as submarine blasting, is used for a wide range of purposes. This includes harbor and channel widening, trench excavation for establishing oil and gas pipelines and communication cables, demolition operations, and substructure construction. Particularly, underwater rock blasting is the most difficult and …
اقرأ المزيد
The rock drilling and blasting method is the most commonly adopted method for rock roadway excavation in China, where cutting efficiency is the key factor affecting the excavation speed. ... digital electronic detonators and in-hole segmented detonation have never been implemented for the drilling and blasting process of coal mine rock highway ...
اقرأ المزيد
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 ic ...
اقرأ المزيد
a.CSIR-Central Institute of Mining and Fuel Re search, Dhanb ad 826015 India. Abstract. Overbreak is a major concern in underground development face blasting. The controlled blasting coupled with ...
اقرأ المزيد
The firing patterns used were: 'skewed V', 'in line', 'diagonal' and 'extended V'. Results for blast designs using a 150mm blasthole diameter. The field observations and …
اقرأ المزيد
The blast design for controlled blasting using electronic detonators could generate blast induced ground vibration less than 3.1 mm/s and 2.3 mm/s at 50 m and 100 m respectively from the blast site. Linear superposition …
اقرأ المزيد
Conference: Latest Advancement in Drilling-Blasting & Rock Fragmentation Technology in Opencast Mines; At: Northern Coalfields Limited, Singrauli, Madhya …
اقرأ المزيد