Drilling And Blasting Technology
This course will cover the basics of Rock geology related to drilling application, the fundamentals of drilling and blasting process during rock excavation in surface and sub-surface excavation …
Blasting | PDF | Drilling
blasting ppt - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. This document discusses drilling and blasting procedures at the OC-II coal mine in Manuguru. It details the types of drills and explosives used for overburden and coal. For overburden, 250mm diameter holes are drilled on a 7x9 meter pattern to a maximum …
CHALLENGES FOR IMPLEMENTING ADVANCED …
be adopted for efficient, safety and controlling adverse environmental controls in blasting operations in India. 2. Current Status of Blasting in India There are many good examples of blasting operations, however general blasts in Indian surface mines are small sized, resulting in frequent blasting, poorer fragmentation and
Underwater Drilling and Blasting for Hard Rock Dredging in Indian …
The drilling barge is brought into the predetermined location to drill a line of holes and is held in position by anchoring. The drilling towers are positioned over the specified drill hole location and drilling commences. The most commonly used drilling method for underwater blasting is called Over Burden Drilling (OD).
Drilling And Blasting Technology
Drilling and Blasting is the most popular and predominant rock excavation technique. The main advantage of this technique is that it can be universally applicable if it is designed suitably. ... Rourkela and at Indian School of Mines, Dhanbad. His research area includes excavation of rock by blasting or by mechanical cutting, mining operations ...
370 Mine Drilling And Blasting Tenders in India 2024
Boards / Undertakings / PSU - sonepur - West Bengal. 45083483 tender for day to day shifting, laying, unloading of ht power cable of field switches, marching of shovels, drills, dragline under the qualified supervisor and supervisor of ecl representative for day …
Drilling and Blasting MCQs Questions & Answers
The Drilling and Blasting chapter is particularly important for students studying mining engineering. Learn and practice multiple-choice questions (MCQs) with answers related to Drilling and Blasting. These resources are available for mining engineering students who wish to clear GATE exams, technical interviews, competitive examinations, and ...
Blastline India Pvt Ltd
Blastline india. Blastline India Pvt Ltd is an acknowledged leader in the supply of systems for the surface preparation, protective coating and corrosion control industry. ... The company functions as a one-stop shop for all your blasting and coating needs by providing everything from abrasives to blast machines, aftercoolers, airless spray ...
Precision Rock Excavation: Beyond Controlled Blasting and Line Drilling
The strictness of the result of an excavation, whether mechanical or by means of explosives, is naturally conditioned by its objective and, therefore, by the type of technique applied to achieve it. To attain the best results in terms of rock breakage, and with respect to the final profile, it is important to evaluate the specific excavation energy and its optimization. This study, being a ...
EVALUASI PERIMETER BLASTING TERHADAP TINGKAT …
diameter size of line drilling holes, space, and the depth of line drilling. Suggestion for the next blasting operation by using 3 inch for the diameter size of the line drilling holes, 0.3 m for space, the distance to the last row is 3.75 m and the same size of the depth in each holes. Keywords : Perimeter Blasting, Line Drilling, Ground Vibration
Emerging trends in drilling and blasting technology
Emerging trends in drilling and blasting technology: concerns and commitments Pijush Pal Roy 1 Received: 27 October 2020 /Accepted: 11 March 2021 ... junction with surface noiseless or trunk-line-delay (NTD or TLD). In India, shock tube systems are available in the brand name of EXEL (M/s Orica-Indian Explosives Ltd., Gomia);
Drilling and Blasting Services
I wanted to take a moment to thank you for the wonderful job your team provided in the drilling and blasting for my Quarry. As you know, we faced what seemed to be insurmountable challenges including short timeframes, false stop-work …
Optimization of Blasting Parameters in open cast …
26 Chapter-5 Conclusions In this project parameters affecting drilling and blasting have been discussed. However, optimization of blasting and cost of fragmentation require quantifying these parameters. The bottom line of …
Line Drilling | SOSR Infrastructure Pvt. Ltd. Pune, …
By carefully planning and executing line drilling operations, SOSR Infrastructure helps clients enhance the effectiveness of their blasting programs, reduce the need for secondary breaking, …
Underground Perimeter Control Basics: Post-Blast …
The methods include line drilling, smoothwall/trim blasting, and cushion blasting. The next post covers pre-blast perimeter control, such as presplitting. As discussed in a prev . ... Line drilling is a technique where holes …
Drilling and Blasting
Drilling and blasting is widely used in mining and construction industries, and ground vibration is one of the detrimental effects caused by blasting. To determine the fragmentation of rocks and to ensure the safety of ambient urban areas and residents, it is necessary to determine the parameters that have a reasonable influence on blast ...
IS 4081 : 2013: Blasting and related drilling operations
Name of Standards Organization: Bureau of Indian Standards (BIS) Committee Designation: CED 29 Designator of Legally Binding Document: IS 4081 : 2013 Title of Legally Binding Document: Blasting and related drilling operations - Code of Safety Number of Amendments: 0 Status: Active Additional Info: (Reaffirmed Year : 2018 ) LEGALLY BINDING …
Precision rock excavation: beyond controlled blasting …
Keywords: presplitting, smooth blasting, line drilling, mechanical cutting, controlled blasting. 1. Introduction Michelangelo was supposed to say that sculpting is a trivial operation, as it consists in just removing the excess from a block of stone. Paradoxically, the sculptor's problem is sometimes simpler than the one which is
IS 14749: Proforma for Analysis of Unit Rate of
Title of Legally Binding Document: Proforma for Analysis of Unit Rate of Underground Excavation by Cyclic Drilling and Blasting Number of Amendments: Equivalence: Superceding: Superceded by: LEGALLY …
1.0 HAZARD IDENTIFICATION AND RISK ASSESSMENT …
1.1 Blasting This is the reason of common accident into mines. Most of the accidents from blasting occur due to the projectiles and mainly due to overcharging of the shot holes as a result of certain special features of the local ground. Flying rocks are encountered during initial and final blasting operations. Noise and dust also
DRILLING & BLASTING
Sanpac Explotech offers comprehensive Drilling & Blasting Contract services for mining and construction projects. We undertake complete responsibility for all aspects of the drilling and …
Applicability of Controlled Blasting in Large Opencast …
Controlled blasting technique, line drilling was planned and line drill holes of 20 to 27 m depths were drilled at a spacing of 3 to 4 m. The line drill holes were kept at a distance of 4 m from the final production holes of the dragline bench. ... In India, presently DGMS technical circular 7 of 1997 is considered as vibration standard for the ...
Techniques of Controlled Blasting | PPT
6. Trim (Cushion) blasting : Like line drilling trim or cushion blasting involves a single row of holes along the specified final excavation line.This technique generally uses 2 to 4 inch diameter holes. Holes are loaded with light charge, well-distributed, completely stemmed and fired after the main excavation is removed.
Drilling and Blasting Technology
It is a 3 months course where esteemed Professor Kaushik Dey will teach all the ins and outs of Drilling and Blasting of Mining Engineering. This will help students gain knowledge and be proficient in this Mining Engineering field. ... Learning Routes is India's first online platform that aims to bring together all of the online institutions on ...
Blast design in opencast mining | PPT
Outline • Introduction • Drilling • Explosive used in opencast mine • Types of variables in blast design • Blasting patterns used in Indian opencast mines • Concept of optimum blasting • Conclusion 3. Introduction • Drilling and blasting is the major unit operation. • Basic objective should be optimum fragmentation.
Overbreak Control in Development Face Blasting of Underground …
Some controlled blasting patterns viz. line drilling, pre-split blasting etc. are also practiced to attenuate the intensity of ground vibration (Paswan et al., 2018;Singh et al., 2010;Himanshu et ...
What's new in automated drilling and blasting?
Drilling and blasting can be time, energy and cost intensive and there are many aspects that can go wrong, which can then snarl up operations. In this free case study, discover how blasting solutions firm Enaex supported Chilean copper mine Sierra Gorda to achieve desired fragmentation objectives through a digital application for predicting ...
Blastline India Pvt Ltd
Blastline India caters to the protective coating requirements of major clients across the country such as shipyards, petrochemical companies, oil and natural gas refineries, pipeline contractors, wind towers, railcars, pre-engineering …
IS 4081 (1986): Safety code for blasting and related …
requirements for blasting and drilling operations. In view of the advancement made in the field of blasting and drilling processes; it has now become necessary to revise the …
Engineering Staff College of India
Telangana, India Mining Division Powered by Online Continuing Professional Development Programme on "DESIGN & OPTIMISATION OF BLASTING IN OPENCAST MINES" 28–30 June 2021 INTRODUCTION Drilling and Blasting is the most popular and predominant rock excavation technique. Rock is blasted either to break ore/mineral or waste rock.