surface drill and blasting

surface drill and blasting

Surface Mine Drilling and Blasting Procedure using Surpac

Jun 20, 2017· The degree and the efficiency through which drilling and blasting is done actually determines the quality of the broken material for eventual downstream processing. In surface mining operations, the purpose of drilling into rock is to provide a "blast hole" into which explosives can be loaded (Source: Blast Hole Drilling Module-4).

Drilling and Blasting

Gagu Mach Ltd. is a third generation surface drilling and blasting company first established in 2012. It then grew to a large Construction Company that was involved in all aspects of the civil construction industry. In the early 2009 Mr Tshepo Vilakazi became involved in the leadership of the company and returned to specializing in drilling …

Best practices: Drilling and blasting : Pit & Quarry

Dec 07, 2015· Blasting contractors should lay out the drill pattern based on a surveyed profile of the face. At a minimum, a profile survey should be done after drilling and before loading so that the proper explosive load can be determined for each blast hole based on the survey and drill log. A best practice would be to profile both before and after drilling.

Optimization of Blasting Parameters in opencast Mines

reduction and optimum blast design parameter will give an economical result. The parameters are i. Drill hole diameter, ii. Powder factor (desired), iii. Cost of explosive, iv. Numbers of holes required to blast. Methodology The study of the various parameters of blasting suggests that the powder factor should be constant as per the requirement.

Drill and Blast Surface - Promine - Wiki

Design Drill-and-Blast patterns, load holes, and set timing sequences for surface open pit mines. Like the underground module, the explosives, delays, and drill sizes are completely customizable. There are also tools at hand to produce drilling and blasting reports (which have customizable fields) and to perform various analyses.

Summary of Surface Blasting and Damages with Analysis of ...

Mar 24, 2015· Blasting can be separated into two general categories, surface blasting and underground blasting. Both types share the same principles, turning an unmanageable rock mass into smaller, broken pieces. Surface blasting will be the focus and is useful for removing overlying material for mines or cutting slopes for highways.

Blasting | ontariocolleges.ca

Blasting Jobs and Salaries. Surface blasting and drilling professionals are in high demand across many sectors, including construction, mining and more. Depending on the program credential, possible job titles and specializations include: Resource Drilling and Blasting Technician;

drill and blast mining - YouTube

I get to sample those holes, gee im lucky haha

explosives – Mining and Blasting

Benefits of Inclined Drilling in Surface Mining: In Bench Blasting, inclined drilling extends numerous benefits. These are: – Better Fragmentation – Better displacement and swelling of muckpile, as Burden B is kept almost uniform along length of blasthole and angle of projection of the blast …

Blaster's Training Modules - Module 4 - Blasthole Drilling

layer will be compromised, and flyrock may occur if blast holes are overloaded. The size of the mast and drill steels carried by the rig are important considerations in drilling efficiency. If a quarry plans to use 30-foot bench heights with 7 feet of sub-drill, a drill rig

Elko Surface and Underground Mine Drill and Blast Training ...

The drill and blast specialists at RESPEC and Missouri S&T are partnering to bring you a unique drill and blast training course in the heart of Elko, NV. The course includes separate sessions for both surface and underground drillers and blasters featuring up-to-date material and case studies that will educate both new and experienced blasters, […]

Chapter 8 BLAST DESIGN - NPS

blasting conditions are both severe, the operator should use premium explosives, at least in the bottom one third of the drill hole. Clearing the toe, and therefore contributing to a smoother floor, is a major asset to improve BLAST DESIGN

Drilling and Blasting | Technical Aspects of Mining ...

Primary Blasting is the activity in which in-situ rock is broken in both development and stoping and in surface mining by drilling holes in the rock, charging them with explosives and detonating the holes in a planned sequence. The main technical objectives of primary blasting are:

Drill & Blast 101 - YouTube

Apr 03, 2013· Speaker: Steven Putt

Reduce Drill and Blast Cost - Orica

Reduce drill and blast costs. Advanced blasting technology and clever blast design can improve the utilisation of the drilling fleet and reduce capital and operating costs without compromising productivity. Matching explosive energy to geology enables expanded patterns without affecting fragmentation.

Blast Training Course Guide - Orica Mining Services

the National Surface Blasting Competencies, Regulations, Codes and Standards. RIIBLA301A Conduct Surface Shotfiring Operations ... Workshop – Calculating Drill & Blast Costs Optimisation Techniques & Tools Vibration / Airblast / Flyrock Workshop – Special Blasting Techniques

Understanding the connection between blasting and highwall ...

Jan 01, 2019· The presplit technique is the most commonly used controlled blasting technique for surface operations. 3. Methods3.1. Line drilling. Line drilling has a number of requirements that must be satisfied to ensure success. The first requirement is that the drill holes must be 38 to 76 mm in diameter and not loaded with explosives.

PROCEDURES FOR BLASTING

Blast Pattern – The plan view of the drill holes as laid out for blasting. Blast Plan – A written procedure that details the methods and manner by which a Project blaster will comply with pertinent laws, rules, regulations, and contract documents. The plan shall include all information, as detailed in Section 2A, necessary to evaluate the ...

BEST PRACTICES IN DRILL AND BLAST

help drill and blast engineers develop more appropriate and more suitable blast designs. Engineers can create designs in the offi ce and upload them to the drill rigs ... rock properties and surface blast design – to devise effi cient and cost effective blasting that achieves desired degrees of fragmentation. Developing a practical approach to

Drill And Blast • Ausdrill

We work in surface mining operations, construction drilling and blasting, probe drilling for voids and underground workings, and in-pit RC grade control. We provide a safe drill and blast service on any scale, at any location in Australia. We have a comprehensive fleet of rigs at our disposal, including: Purpose-built Longreach Top Hammer.

Rotary Drilling and Blasting in Large Surface Mines - 1st ...

Sep 04, 2018· In large surface mining operations, drilling and blasting activities constitute more than 15% of the total costs. In order to optimize performance and minimize costs, a thorough knowledge of drill and blast operations is, therefore, extremely important. In this unique reference volume, rotary blasthole drilling and surface blasting, as applied in large surface mines, are comprehensively ...

Drilling and blasting powerpoint 2003 - SlideShare

Apr 21, 2012· 21. PROCESS OF BLASTING1.The blast holes are made and cleaned by using the tools.2.The charge of explosive placed at the bottom.3.Remaining portion is filled with clay and tamped.4.Fuse is inserted, kept projecting 15-20 cm above the rock surface.5. Thereafter free end of fuse is fired by detonator. 22.

Stemming for Blast Holes - Academy BlastingAcademy Blasting

Jun 10, 2015· Stemming. In this video Anthony Konya of KonyaInc.com explains stemming and stemming calculations. Stemming is a material that is put inside of a blast hole to help prevent gases from escaping. While stemming is typically put in the top of a blast hole, it can also be used to help bridge mud seams or weak layers.

Drill and Blast Method - rail system

Drilling and Blasting Method Sequences. 1- Drilling. Before the blasting takes place, the drilling rig bores the drill holes – determined in advance in a blasting plan – in the foremst front wall of the tunnel (working face). The more solid the rock, the more explosives are required. A jumbo is used to drill …

surface drill and blasting

Drill & Blast Drill & Blast FragmentationFragmentation How efficiently muck from a working tunnel or surface excavation can be removed is a function of the blast fragmentation. Broken rock by volume is usually 50% greater than the in situ material. In mining, both the ore. Get Price Drilling and Blasting …

blast pattern – Mining and Blasting

Oct 12, 2012· 2. Contemplation of Blast Design: Blast designing is not a science, but knowledge, experience, studying and analyzing past practices in relation to rock strata & geology etc., makes blaster to achieve perfection. Thus, for a blaster, valuable tool is the file of blast reports that he builds as he gains experience. Not only do these provide evidence of the quality of his work, but they also ...

Drilling, Charging and Blasting Productivity

Reduce drill and blast costs. Advanced blasting technology and clever blast design can improve the utilisation of the drilling fleet and reduce capital and operating costs without compromising productivity. Matching explosive energy to geology enables expanded patterns without affecting fragmentation.

Drilling and blasting - Wikipedia

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 ...

- BlackWing Blasting

BlackWing was founded in 1980 by Rick Batista who had been the explosives engineer for Jefferson County, Colorado for five years. During the early 80's the company's principal focus was small commercial, residential and surface mineral drilling and blasting in Colorado.

Micromine 2020.5 New Features - Surface Drill and Blast ...

May 11, 2020· This videos features how to reconcile drill plans by comparing planned drillholes against as-drilled (actuals).Follow with Product Analyst Andy Esmaili as he...

SSE Recognised Safe Drilling and Blasting

Jul 01, 2018· the 3 competency units—RIIBLA301D Conduct surface shot firing operations, RIIBLA205D Store handle and transport explosives, RIIBLA305D Conduct secondary blasting, or; a recognised Safe Drilling and Blasting course. Successful trainees will receive a Certificate of Completion for the shotfirer units of competency and not a Statement of Attainment

Surface Mine Drilling and Blasting Procedure using Surpac

Jun 19, 2017· In surface mining operations, the purpose of drilling into rock is to provide a "blast hole" into which explosives can be loaded (Source: Blast Hole Drilling Module-4). Good drilling practice include carefully monitoring drill-rig operating parameters, …

7 Rules of Thumb for Open Bit Blast Pattern ...

Apr 08, 2018· Mineral/Ore Mined using the Hardrock Blast hole Drill, which are Heavy duty Rotary and or Down-The-Hole rigs for Blast hole drilling. It can help client to achieve the best economic and social benefit. Below is 7 rules of thumb for open bit blast pattern. 1. Burden. 25 to 35 hole diameters; 2. Spacing . size greater than 140 mm (5½") 1.2 to ...

Surface drill rigs — Mining and Rock Technology

Our surface top hammer drill rigs are exceptional at breaking both the limits and the ground below, efficiently punching holes of 22-152mm in diameter; our surface down-the-hole drill rigs provide unmatched results in high-capacity rock drilling, leaving you with holes of 89-152mm in diameter and our dimensional stone drill rigs are designed to ...

DRILLING AND BLASTING DESIGN BASED ON INVARIABLE …

borehole blast varying depth, specific charge weight and charge surface. The parameters measured are the volume of blast crater, particle size distribution, average velocity of rock and rock mass acceleration. Working assumption to determine energy spent on fragmentation is probabilistic-statistic hypothesis of rock destruction (Shams, et al ...