Improper and uneven use of explosive energy results in uneven fragmentation, Boulders and dust, both of which are difficult to deal with. Boulders need secondary breakage and dust is a wastage. Use of stemming Plugs Stemming is the most critical part of blast geometry; inadequate stemming results in Flyrock, and too small a portion produces […]
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Flexible Liners What is a Flexible Liner Flexible liners are HDPE (High-Density Polyethylene) tubes that are flexible and can be easily inserted into the hole. When to use? Deck charging results in uneven distribution of explosives and will result in uneven distribution of fragmentation and may produce boulders from the decked portion. The diameter of […]
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As a user of Explosives, you know bad quality of explosives can affect your productivity and costs. Inaccuracy in delay timing will increase the Vibrations attract complaints, increase boulder generation, and send entire Blast planning haywire. Quality Parameters of Explosives The Main Quality Parameters of Explosives are STRENGTH Others How to check : Strength: Weight […]
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What is a seismograph? A seismograph is an instrument that measures ground Vibrations irrespective of the source of vibrations. The source could be Rock Blasting, Pile Driving, Traffic or even an Earthquake. Seismographs used by Civil and Mining Engineers measure the Particle Velocity of the medium on which the sensors are put in 3 directions, […]
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Very often, the biggest challenge for most excavation Engineers is complaints about noise and vibrations from the neighbourhood; if it involves Rock blasting, the first thing the Neighbours assume is that the blasting is certainly going to damage their properties. Ground vibrations are not caused just by Rock blasting alone but bye by many activities […]
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As Indians, we are used to the noise that surrounds us every day. Be it vehicular sounds, people’s conversations in densely populated localities, repair work going on in one’s own or a neighbour’s house, animal sounds or the noise produced at construction sites. More often than not, we are oblivious to the effects of all […]
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Blasting is a necessity for construction companies, however, it has become an enormous challenge to blast within city limits. Due to the rocky terrain in many parts of India, encountering rock during excavation is quite common. In recent years, there has been an increase in the number of property damage complaints against excavation contractors working […]
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Ground vibrations are measured, as a practice, whenever they are of a concern. The degree of concern and necessity to measure ground vibrations varies from very high to medium or low. A great number of Coal/ Limestone mines/ Iron Ore Mines/ Quarries, in India, fall under a high concern zone since villages and other critical […]
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Litigation related to blasting mostly occurs due to negligence on the contractor’s part and when they forget to take the neighborhood into confidence. Without finding solid evidence and information people consider cracks and crevices as blasting damages, without checking the previous condition of the structures. This is where the role of Lawyers kicks in. These […]
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The reliability of data measured from ground vibrations and air blasts plays a significant role in risk mitigation. It is essential to understand that there are two parties involved in this process. Project Management being the first, responsible for generating ground vibrations and air blasts, and the neighborhood (people living in the proximity) being the […]
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The use of explosives, that started in demolition, construction and mining, has made it’s way to the fields of aeronautics. The recent failure of ISRO’s Polar Satellite Launch Vehicle might have resulted due to malfunctioning of the pyro mechanism. Bolts of an explosive nature are used in heat shields. As a result of their explosion, […]
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Adopting the right measures for risk mitigation helps avoid project stoppages (consequently reducing the risks and costs related to stoppages), reduces the operational costs since organizational targets are met (fixed cost distribution), and also helps meeting project schedules and targets. Stoppages in work should be avoided at any cost, since these are extremely costly to an […]
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Project Details Client Name: Sri Sai Lakshmi Contruction& Company Location: Kekote Dam, Mohan, Gwalior, Madhya Pradesh. Objective To blast 125000 Cubic Meters next to 75 year old Kekote Dam that supplies water to the City of Gwalior in the state of Madhya Pradesh in India Uttam was called in. Uttam blasted 125000 Cubic Meters of […]
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Project Details Client Name: GJF Construction Co. Ltd., Location: Sonna Barriage, Gulbagra District, Karnataka. Objective Locate a quarrying area very near to the Dam Under construction. When GJF constructions was constructing Sonna Barrage in Gulbarga District of Karnataka State in India.The nearest quarry known to the Irrigation department and shown by them was 17 Kms […]
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Project Details Client Name: RMC Ready Mix India Ltd Location: Sonnappanahalli village, Bangalore, Karnataka Objective/Challenge To operate a quarry next to village. To feed a 300 Tons Per Hour crusher from Quarry not even producing a days requirement. Approach When Uttam took up the quarrying contract for RMC, the first thing that was done was to develop […]
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Project Details Client Name: Name withheld on request. Location: Idukki District, Kerala Objective: Know the value of the Mineral and the true value of Quarry Land and thus understand the financial risks of acquisition. Kerala ‘gods own country, with rich climate, fertile soil, 100% literacy and plantations and costly land. A perfect recipe to go […]
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Project Details Client Name: DLF Laing O Rourke (India) Ltd Location: Basheerbagh, Hyderabad Objective/Challenge To blast around 300,000 Cubic Meters of Rock at a location 450 Meters from the Office of the Commissioner of police Hyderabad. 1 Kms from the Secretariat In a VIP locality and with heritage structures. A perfect concoction for blast related litigation. […]
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Project Details Client Name: Pioneer Builders Location: Nalgonda District, Telangana State. Objective/Challenge Blasting below a 440 KV Powerline connecting the capital city of the state of Telangana, Hyderabad with Nagarjuna Sagar Power house which is an important source of electricity supplies to the city of Hyderabad. Almost the entire canal of SLBC (Srisailam Left Bank […]
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Project Details Client Name: Sri Laxmi Engineering Company Location: Ramagundam, Karimnagar District Objective/Challenge Rock Blasting next to a Power producing Turbine. When NTPC (Super Thermal Power Station) decided to expand their Super Thermal Unit at Ramagundam Super Thermal Power Station, the challenge was to excavate around 37,000 Cubic Meters of Rock in a very critical […]
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Project Details – Bhuj earthquake After Bhuj Earthquake demolition of damaged buildings was a challenge. A challenge well taken by our Mr. Sarvate. As situation demanded, he demolished 115 buildings. Limca book of Records noted this achievement. Restoration and Rebuilding fast and quick begins with timely, fast and accurate demolition by Uttam. Project Details – […]
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