Drilling And Blasting Equipment Pdf

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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.

Order your copy here. Quarrying as a process comprises a number of consecutive sub-processes — drilling, blasting, secondary breaking, loading, hauling, crushing, screening, stockpiling and delivery of saleable products. Each quarry is unique and needs to be planned carefully in terms of both working practices and the selection of equipment in order to maximize the profitability of the operation. The selection of drilling equipment and drilling tools has a significant impact on the subsequent processing stages, such as explosives consumption powder factor , rock fragmentation, the amount of oversize boulders and the need for secondary breaking, the formation of toes and floor humps and their affect on rock loadability, loading and hauling capacities, and the design of crushing plants.

Proceedings of the Institution of Civil Engineers

We use cookies to provide user security, personalise content and analyse our traffic. For more information about the cookies we use, deleting cookies and how to control the cookies your browser accepts, please see our Cookie Notice. Orica can support or manage all aspects of charging to agreed terms enabling improved outcomes including:. With our Down-the-Hole service, you know that blasts are safely loaded to design and are ready to be fired on schedule.

Learn more. Accurate, timely, consistent and responsible loading and blasting. Ensuring technical excellence in blasting for over years. Rapid, reliable, flexible and accurate delivery systems for surface operations. Mobile and reliable delivery systems for unique underground applications. Increased density range to deliver bulk strengths of 70 to relative to ANFO for higher throughput and cost efficiency.

A primer sensitive bulk emulsion explosive which has excellent water resistance, suited for up and down holes and development headings. Optimizing drill and blast parameters is important to accelerate the development rate of a mine. The parameter that is central to drill and blast pr Download now. In the financial year SKM achi Coal mines are susceptible to fume when sleeping large blasts in soft, weathered and wet sedimentary rock.

In response to industry demand, Orica has developed a complete Fume Risk Reduction protocol that takes a holistic view on the blasting operation to seek and control the many possible causes of fume without affecting productivity, and in many cases without increasing costs.

Blasts in coal mines are typically the largest in the mining industry. Poorly designed or executed cast blasts and presplits have a high potential to generate vibration, overpressure and flyrock. Careful blast design and planning, combined with prediction, measurement and reconciliation of results is the key to controlling and managing these outcomes and maintaining a good relationship with community and regulatory stakeholders.

Achieving high productivity from large capital equipment items such as draglines depends on consistent fragmentation and muckpile presentation to reduce rehandle and unnecessary movements. By careful planning and blast design, cast to final spoil can be maximised without increasing the risk of flyrock or overpressure. Maintaining the integrity of walls is essential to the safe operation and maximise recovery of coal deposits.

Consistently delivering high production rates enables a quarry to operate efficiently. Effective blasting can deliver consistently fragmented, loose muckpiles of the optimum profile. 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.

This in turn increases the drilling yield, providing more tonnes per drill metre. Products and procedures for safely sleeping blasts allow less frequent and larger blasts, reducing production delays and increasing blasted inventory without employing more drills or blast crew resources.

While not common, reactive ground is potentially a highly dangerous and frequently misidentified hazard. A runaway reaction between sulphide minerals and ammonium nitrate can lead to spontaneous and premature detonation of one or more blastholes at any time from a few minutes to several days after loading. Maximising coal recovery in challenging geologies represents a significant efficiency opportunity for most coal mining operations to increase the value of their resource. As the easy coal is mined out, mine operators need to become more skillful at mining thin, steep, deep and undulating seams productively and without sacrificing coal quality.

Orica has developed significant expertise in using unconventional techniques for through-seam and deep-seam blasting and coal edge protection using our own specialist design software, geophysical tools, on-bench data management systems and electronic blasting systems.

A runaway reaction between sulphide minerals and ammonium nitrate can lead to the spontaneous and premature detonation of one or more blast holes at any time from a few minutes to several days after loading. Orica has developed a complete Fume Risk Reduction protocol that takes a holistic view on the blasting operation to seek and control the many possible causes of fume without affecting productivity, and in many cases without increasing costs.

Sophisticated mine dispatch algorithms are used to assign trucks to shovels based on predicted travel and loading times. Consistent loading times are more easily achieved when digging conditions are also consistent — meaning that fragmentation, floor levels, muckpile looseness and profile are all achieved repeatedly blast after blast.

Maintaining loading cycle times is key to ensuring the dispatch system can deploy trucks efficiently. Our range of products deliver reliable, optimal blast outcomes, contributing to the lowest overall cost of production.

We have developed several industry leading prediction tools for environmental control and blast impact measurements. Orica technical specialists support the safe and effective use of cyanide at your site to help you maximise recovery and reduce total costs.

Safely execute drill and blast operations in cooperation with ongoing piling, excavation, concrete pouring and ground support activities. Delivering high production rates when excavating enables a construction project to operate efficiently. Our multi-deck blast techniques speed up project completion by delivering more rock within a single blast.

Controlling flyrock, vibration, overpressure, dust and noise are all of critical importance for sustainable blasting. Delivering predictable and precision blasting outcomes through our proven product performance and experienced technical and operations teams. Experienced management of diverse stakeholders will maintain project cost and ensure completion schedule is met. Minimise risk of exceeding allowable limits with our advanced technology that can help you to predict and manage blast vibration and airblast.

Our sophisticated technology can help you to predict and manage blast vibration, minimising the risk of exceeding allowable limits. Our team of construction blasting professionals can assist with end to end delivery of blasted rock mass, to spec. From road and rail cuttings to high rise foundation excavations, we have the tools to achieve an optimum solution, in any geology.

Their innovative resin solutions also provide ballast rehabilitation. Seismic exploration is performed over large expanses of land which have various environmental hazards. Type the code from the image. Contact an expert. Proper management of blasting operations ensures timely operations, reduced mining costs and benefits downstream operations overall Orica can support or manage all aspects of charging to agreed terms enabling improved outcomes including: Increased drilling capacity through pattern expansion.

Improving charge-up crew productivity. Improved site logistics. Reduced site explosives inventory. Large diameter and long blast hole capabilities. Features and Benefits Orica support Orica establishes the service, trains operators and maintains the equipment.

Specialist knowledge Product and delivery system is supported by Orica for life of service. Reliability Our bulk systems are designed and refined for the underground environment. Flexibility Equipped with the ability to charge both development and production blasts. Customer Stories "Safer, predictable and more productive blast outcomes.

Vibration and airblast control Blasts in coal mines are typically the largest in the mining industry. Wall control Maintaining the integrity of walls is essential to the safe operation and maximise recovery of coal deposits.

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. Reduced coal loss and dilution Maximising coal recovery in challenging geologies represents a significant efficiency opportunity for most coal mining operations to increase the value of their resource.

Safe and efficient bulk explosives supply Leaching productivity Flyrock control Maintain broken stocks Safe and efficient supply of cyanide Reduce total cost of operation with a safer, more secure and efficient cyanide delivery system.

Vibration and airblast control Poorly designed or executed cast blasts and presplits have a high potential to generate vibration, overpressure and flyrock. Reduce drill and blast cost Our range of products deliver reliable, optimal blast outcomes, contributing to the lowest overall cost of production.

Vibration and airblast control We have developed several industry leading prediction tools for environmental control and blast impact measurements. Wall control Our range of solutions enables steeper walls and faster vertical advance in cutbacks. Safe and efficient supply of cyanide Orica technical specialists support the safe and effective use of cyanide at your site to help you maximise recovery and reduce total costs. Reduce overbreak and damage Optimising cost and scheduling through greater blast control.

Drilling, charging and blasting productivity Improving downstream operational value with Orica's experts in Underground operations.

Improve advance and cycle times Improve your mine economics with the maximum possible advance per round. Improve fragmentation, flow and ore recovery Greater ore recovery with improved fragmentation flow. Vibration control Minimising risk of exceeding allowable vibration limits. Reduce overbreak and damage Saving cost and time through efficient drill control and blasting. Improve advance and cycle times Delivering higher charging rates and capacity and enabling faster loading cycles.

Drill and blast productivity Safely execute drill and blast operations in cooperation with ongoing piling, excavation, concrete pouring and ground support activities. Excavation productivity Delivering high production rates when excavating enables a construction project to operate efficiently.

Faster project completion Our multi-deck blast techniques speed up project completion by delivering more rock within a single blast.

Flyrock control Controlling flyrock, vibration, overpressure, dust and noise are all of critical importance for sustainable blasting. Reliable and predictable blasting Delivering predictable and precision blasting outcomes through our proven product performance and experienced technical and operations teams. Stakeholder management Experienced management of diverse stakeholders will maintain project cost and ensure completion schedule is met. Vibration and airblast control Minimise risk of exceeding allowable limits with our advanced technology that can help you to predict and manage blast vibration and airblast.

Wall and perimeter control In any geology, we have the expertise and tools to achieve an optimum solution. Environmental monitoring Our sophisticated technology can help you to predict and manage blast vibration, minimising the risk of exceeding allowable limits. Road and rail cuttings Our team of construction blasting professionals can assist with end to end delivery of blasted rock mass, to spec. Smooth wall blasting From road and rail cuttings to high rise foundation excavations, we have the tools to achieve an optimum solution, in any geology.

Community relationship support Seismic exploration often presents a unique communication challenge for all stakeholders. In-field technical support Seismic exploration is performed over large expanses of land which have various environmental hazards. GPS based project management Seismic exploration is performed over large land areas often exceeding square kilometers. Benchmark seismic explosives Consistent performance in extreme and varied environmental conditions.

Supply chain solutions Security of supply for your business.

Drilling and blasting

Blast hole Drilling is a technique used in mining whereby a hole is drilled into the surface of the rock, packed with explosive material, and detonated. The aim of this technique is to induce cracks in the inner geology of the surrounding rock, in order to facilitate further drilling and associated mining activity. Blast hole drilling is one of the primary surface drilling techniques employed in mining operations today. Blast hole drilling is traditionally used wherever the mining company wants to explore the mineral composition or potential mineral yield of the area demarcated for their mining interests. Blast holes are thus a fundamental step in the exploratory mining process, and can be employed in both surface mining operations and underground mining operations to varying degrees with varying effects or results. Blast hole drilling can also be employed in quarrying endeavors.

Open PDF. Proceedings of the Institution of Civil Engineers. E-ISSN Search for articles by this author. Author Affiliations. Key: Open access content Subscribed content Free content Trial content. Related content.

All of our blasting engineers undergo training in blast design, software, and measuring tools, set by the relevant international organizations. We are using the most high tech drilling machines and blasting equipment in the Middle East. In consequences, ASCOM's blasting department can undertake the following services on behalf of our customers:. Cost Optimization Run Factor Studies. Coordination for Time Saving. Efficiency Ranking and Rising. Full Capacity utilization.

Drilling Process Optimization

Drilling, blasting and ripping are fundamental processes in just about any quarry and aggregate operation. But it takes the right machines to perform these essential tasks time after time — and without breaking down in the middle of a project. You can learn more about our Cat drilling, blasting and ripping products by clicking on their product descriptions.

Хотя агентство имело возможность потребовать от переадресующей компании открыть ему имя этого клиента, оно решило прибегнуть к более изощренному методу - следящему устройству. Фактически Сьюзан создала программу-маяк направленного действия, замаскированный под элемент электронной почты. Она отправляла его на фиктивный адрес этого клиента, и переадресующая компания, выполняя свои договорные обязательства, пересылала этот маяк на подлинный адрес.

4 Response
  1. Attic F.

    Blasting , process of reducing a solid body, such as rock, to fragments by using an explosive.

  2. Joachim T.

    Blasting is an integral part of the excavation process in underground construction and civil engineering.

  3. Thomas W.

    Rock that is too. ard to cut economically with a machine must be excava ed in the conventional manner: using drills and explosives. Tunneling machines are.

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