Get in Touch
Blog
  1. Home >
  2. Blog >
  3. Blog Detail

Rock crushed during blasting

Blasting generally has two purposes: rock fragmentation, and displacement of the broken rock. The movement of the blasted rock (also known as muckpile) depends on the shot-design parameters, geological conditions, and mining constraints. In some mining practices, it is desirable to throw or cast as much rock as possible to the spoil heap

Products Recommended

  • (PDF) Rock breakage by explosives - ResearchGate
    (PDF) Rock breakage by explosives - ResearchGate

    (2003). Modelling the size of the crushed zone ... the charging cavity in the rock mass during its blasting destruction, depending on the physical and mechanical pro-perties of the rock mass, the

  • Rock-breaking mechanism and experimental analysis
    Rock-breaking mechanism and experimental analysis

    Sep 01, 2017 Due to the moisturising, cooling and diluting effect of water medium, no sparks or flyash was produced during the entire process of rock blasting. So, the safe static rock-breaking under the action of high-efficient explosive blasting was achieved as well as the unification of super dynamic load of explosive blasting and static rock-breaking of

  • An Analysis and Prevention of Flyrock Accidents
    An Analysis and Prevention of Flyrock Accidents

    An Analysis and Prevention of Flyrock Accidents in Surface Blasting Operations by T. S. Bajpayee, Harry C. Verakis, and Thomas E. Lobb Abstract Blasting is a primary means of extracting minerals and ores at surface mining operations. The domestic consumption of explosives and blasting agents during the year 2002 was about 5.53 billion pounds

  • Blaster's Training Modules - Module 6 - Geology
    Blaster's Training Modules - Module 6 - Geology

    This module presents information regarding fundamental rock properties and the geologic structures encountered during blasting operations. Geology can vary widely and has a great impact on drilling and blasting efficiencies. Highwall cut showing horizontal bedding planes cut by inclined joints that offset beds in the limestone. A blaster should

  • In Court: Road Contractor’s Excavator Crushed after blasting
    In Court: Road Contractor’s Excavator Crushed after blasting

    Jun 04, 2012 The jury returned a verdict that AJC’s blasting caused Patterson’s damages regarding the crushed excavator, but Patterson and its employees assumed the risk of harm. The jury allocated fault

  • (PDF) ROCK BLASTING FOR MINING - ResearchGate
    (PDF) ROCK BLASTING FOR MINING - ResearchGate

    While rock processing for obtaining of crushed stone the yield of screenings is high, its amounts depend on rock strength properties. Investigation into the influence of drilling and blasting

  • Blaster's Training Modules - Module 1 - Explosives
    Blaster's Training Modules - Module 1 - Explosives

    crushed. Shock waves from detonating boreholes can dead-press (squeeze out tiny air bubbles from or collapse glass ... not change (unless the package is broken during loading) and (2) must be greater than the density of that same ... guideline when selecting explosives for rock blasting. Fume Class Fume class is a measure of the amount of toxic

  • (PDF) Modelling the size of the crushed zone around a
    (PDF) Modelling the size of the crushed zone around a

    crushed zone was measured in blasts where ANFO and . ... intensive fragmentation and fracturing that arise around the charging cavity in the rock mass during its blasting destruction, depending on

  • Chapter 8 BLAST DESIGN - NPS
    Chapter 8 BLAST DESIGN - NPS

    Figure 8-5 indicates that the direction of throw of the blasted rock can be controlled by varying the delay pattern. The rock will move forward normally to the rows of holes. If the holes are fired in oblique rows as in Figure 8-5, the rock mass would be thrown to the right during blasting

  • Aggregate production: Fines generation during rock
    Aggregate production: Fines generation during rock

    Jan 01, 2007 Aggregate manufacturing typically starts by blasting rock masses and is followed by a series of crushing stages. Comminution in typical hard rock quarries is sketched in Fig. 1.ASTM particle size distributions of select aggregate products are also shown in Fig. 1 ().Crushing operations can accommodate some adjustment to match the demand for each gradation

  • Potential Environmental Impacts of Quarrying Stone in
    Potential Environmental Impacts of Quarrying Stone in

    ate rock sequences. Like other rocks, karst rocks may host ore deposits contain-ing lead, zinc, iron, and gold. Much of the resource extraction conducted in areas of karst is for the rock itself. Unweathered carbonate rocks pro-vide crushed stone and dimension stone resources. The term “ crushed stone ” refers to the product resulting from

  • eLCOSH : Crushed/Hit
    eLCOSH : Crushed/Hit

    19. Boom truck operator was crushed while attempting to move a load. 20. Ironworker was crushed when 4000-lb steel liner plate being installed at mine toppled over. 21. Blaster was struck by flying rock during blasting operation. 22

  • Design and Application of Blasting Parameters for
    Design and Application of Blasting Parameters for

    During large-scale blasting of rocks in deep underground, however, there is limited space to allow for free movement of rock. To solve this problem, we propose using large diameter empty holes to provide sufficient space for rock movement [ 2 , 3 ]

  • PROCEDURES FOR BLASTING
    PROCEDURES FOR BLASTING

    Blasting, primarily trench and ditch blasting, can displace rock and damage adjacent pavement and underground utilities. 4. Noxious Fumes Blasting generates carbon monoxide and other noxious fumes. The fumes generated during blasting operations, especially during