Blast round design and casting in surface coal mining

Cast blasting can be designed to utilize explosive energy effectively and economically for coal mining operations to remove overburden material. This paper compares two blast models known as DMC (Distinct Motion Code) and SABREX (Scientific Approach to Breaking Rock with Explosives).

Computer aided blasting-round design in an arctic

1987-9-1  Design of blasting-rounds in surface coal mines is dependent on physical properties and structural characteristics of the overburden material. In the absence of any theoretical formula to design blasting rounds, mines have adopted a “trial and error” approach to optimize their blasting system.

Optimization of Blasting Parameters in opencast Mines

2012-7-5  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.

DESIGN OF SURFACE BLASTS- A COMPUTATIONAL

2009-4-30  The blast design approaches such as trial and error and cratering are not suitable for large scale blasts in surface mines. Till date, the blast design for a particular mine is established through trial blasts. The blast designer may make use of available computer aided models for prediction of fragmentation, muck pile profile and vibration.

Investigation of the effects of blasting design

2014-5-31  This study addresses the effects of rock characteristics and blasting design parameters on blast-induced vibrations in the Kangal open-pit coal mine, the Tülü open-pit boron mine, and the Kırka open-pit boron mine. In this study, multiple vibration measurements have been conducted, and the related data have been analyzed and evaluated.

Through Seam Blasting Dyno Nobel

2020-8-18  Through seam blasting has resulted in improved mining efficiency at this mine which should translate to a real economic benefit. It has provided a blasting option to allow mining in a pit that has steeply dipping coal seams due to faulting. The value to the mine is: Minimal coal loss of a coal seam that was unable to be

Blasting Techniques Used in Underground and

2021-5-29  In underground coal mine the yield of coal on an undercut face is nearly 5-8 te per kg of explosive and 1-2.5 te per detonator but with solid blasting the figures are 1.8 to 2.7 te per kg of explosive and 0.8 to 1.35 te per detonator.

GUIDELINES FOR THE INTEGRATED PLANNING AND

2021-1-22  The systematic planning and design process for underground coal mining operations from inception to closure 1. PHASE 1: INVESTIGATIVE STUDIES 1.1 Market analysis The mine planning and design process for any new coal mining operation commences with the identification and analysis of specific market needs and requirements. These needs and

Mine Planning Design Coal Mining Mining

2021-5-2  Safe disposal of water from Top of OB UNDERGROUND MINE PLANNING & DESIGNING Our Technology Under Ground Technology Conventional underground mining SDL & LHD Road Headers Longwall Blasting Gallery Continuous Miners Operational Profile 36 UG Mines Coal: 11.9 MT Depths operated: 400 mts Depths Planned: 600 Mts. Bord & Pillar (Manual Mining)

Development and Application of Blast Casting

An intelligent design software was developed for obtaining better breaking and casting effect, and the error rates predicted with actual result can be controlled with 10%. Blast casting technique was successfully applied in Heidaigou Surface Coal Mine (H) with

Citizen's Guide to Coal Mine Blasting in Indiana

2021-2-5  Cast blasting is a type of blast design that uses the explosive energy to move overburden material across the pit. This technique allows approximately 25% to 50% of the rock to be moved without the use of mine equipment. This is a major cost savings to Citizen's Guide to Coal Mine Blasting

[PDF] Effects of Mine Blasting on Residential

Blasting is common in the coal industry to remove rock overburden so that the exposed coal can be mechanically excavated. The ground vibrations and air blast produced by blasting are often felt by residents surrounding the mines. There has been a trend for regulatory authorities, especially those concerned with the environment, to impose low limits on blast vibration levels in response to

Through Seam Blasting Dyno Nobel

2020-8-18  Through seam blasting has resulted in improved mining efficiency at this mine which should translate to a real economic benefit. It has provided a blasting option to allow mining in a pit that has steeply dipping coal seams due to faulting. The value to the mine is: Minimal coal loss of a coal seam that was unable to be

Blasting Techniques Used in Underground and

2021-5-29  In underground coal mine the yield of coal on an undercut face is nearly 5-8 te per kg of explosive and 1-2.5 te per detonator but with solid blasting the figures are 1.8 to 2.7 te per kg of explosive and 0.8 to 1.35 te per detonator.

Development and Application of Blast Casting

Blast casting is a high-efficiency technique applied in surface mines for overburden removal and results in stripping cost savings. According to ballistic theory and center-of-mass frame basic movement principles, key factors influencing blast casting effect were analyzed, which include bench height and mining panel width, inclined angle of blast holes, explosive unit consumption (EUC), delay

Mine Planning Design Coal Mining Mining

2021-5-2  COAL MINE PLANNING & DESIGN-A.V.REDDY, ADDL.MANAGER The Singareni Collieries Company Limited Mining Methods Generally Coal is being mined by two main methods 1. Surface or Opencast mining 2. Underground mining. The choice of method is largely determined by the depth, thickness and no. of coal seams, geology of the coal deposit and other factors.

GUIDELINES FOR THE INTEGRATED PLANNING AND

2021-1-22  The systematic planning and design process for underground coal mining operations from inception to closure 1. PHASE 1: INVESTIGATIVE STUDIES 1.1 Market analysis The mine planning and design process for any new coal mining operation commences with the identification and analysis of specific market needs and requirements. These needs and

Damage to surface structures due to underground

2007-4-11  The coal reserves are being exploited very fast and mine owners cannot ignore the coal beneath the structures/houses. Blast vibrations produced by the underground blasting beneath the residential or industrial structures may be felt by the residents and there may be apprehensions of likely damage to their houses/structures.

1. Introduction nitrkl.ac.in

2018-11-28  most suitable fragmentation of rock, coal or any mineral from any opencast mine appropriate blasting design is an essential component of mine design principles. The proper method of blasting and drilling can make a contribution extensively in the direction of benefit and subsequently improvement of these parameters is essential.

Open-Pit Mine Planning and Design University of Pretoria

2020-6-10  of Open Pit Mine Planning and Design starting at the geological resource model, through to the reserve statement and including all aspects of the value chain. This unique course enables you to learn the basic theory of open pit mine design and the application thereof, whilst having the chance to interact with experts in the field.