Excavator 960

  • Continuous miners | Introduction | underground COAL

    Continuous miners. Though there are many variations in design, continuous miners mostly consist of five main elements: A central body to carry all other components mounted on some type of drive mechanism to provide mobility (most commonly caterpillar tracks). A "cutting head" usually rotating drum(s) and/or chains with cutting picks attached

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  • Data-Driven Load Frequency Control for Stochastic Power

    Nov 14, 2018 · This letter proposes a data-driven, model-free method for load frequency control (LFC) against renewable energy uncertainties based on deep reinforcement learning (DRL) in continuous action domain. The proposed method can nonlinearly derive control strategies to minimize frequency deviation with faster response speed and stronger adaptability for unmolded system dynamics. It consists of

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  • Underground Mining Transportation Systems

    Many mines also use trackless sy stems in drifts with gradients not steeper than 12 degrees. Large equipment, such as a continuous miner, is generally self-tramming in such circumstances. 3. Underground Transport for Materials and Equipment A variety of different systems are used for the transport of materials and equipment in underground mines.

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  • Heat Treatment and Ventilation Optimization in a Deep Mine

    In order to address the issue of high temperatures and thermal damages in deep mines, the factors causing downhole heat damage at high temperatures were analyzed, the mine ventilation system was optimized and rebuilt, and a cooling system was established. The proposed cooling system uses mine water as the cooling source, and its features are based on the analysis of traditional cooling systems.

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  • CONTINUOUS MINERS - SlideShare

    12CM Series Mid to high-seam applications is the 12CM series continuous miners. This model line, available for both 950 and 2300 volt operation, can operate in seam heights up to 16 feet 4 inches or 5.0 meters The 12CM with remote control and flooded bed dust collector options provide deep cut capability.

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  • Continuous control of an underground loader using deep

    Continuous control of an underground loader using deep reinforcement learning So Backman 1, Daniel Lindmark, Kenneth Bodin1,2, Martin Servin ([email protected])1,2, Joakim M ork1, and H akan L ofgren3 1Algoryx Simulation AB, 2Ume a University, 3Epiroc AB Abstract Reinforcement learning control of an underground loader is investigated in simulated environment, using

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  • Analysis of Hydro-fracturing Technique Using Ultra-deep

    Nov 02, 2020 · The presence of hard roof poses a significant threat to the safety of underground coal mining. In this study, a mechanical model is established for underground stopes to analyze the overburden structure with the advancing of the mining face. It is indicated that the load-bearing arch structure (LBAS) is formed above the stope for roofs with regular hardness, whereas the reversed …

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  • Underground Drill Rigs and Bolters, Mining Drill Rigs

    Sandvik longhole drill rigs for underground drilling and bolting are engineered to minimize ore loss and dilution by drilling straight and accurate holes up to 54 meters (177 feet) in length. We offer a comprehensive range of boom types, hydraulic rock drills, carrier size classes and tool selections to ensure optimum hole quality every time.

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  • Continuous control of an underground loader using deep

    Mar 01, 2021 · Reinforcement learning control of an underground loader is investigated in simulated environment, using a multi-agent deep neural network approach. At the start of each loading cycle, one agent selects the dig position from a depth camera image of the pile of fragmented rock.

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  • Underground Mining Transportation Systems

    Many mines also use trackless sy stems in drifts with gradients not steeper than 12 degrees. Large equipment, such as a continuous miner, is generally self-tramming in such circumstances. 3. Underground Transport for Materials and Equipment A variety of different systems are used for the transport of materials and equipment in underground mines.

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  • THE INTRODUCTION OF ROOF BOLTING TO U.S. …

    ground control technology. Without a doubt, roof bolting has been the single most important technological development in the field of ground control in the entire history of mining. Bolting was substituted for timbering in U.S. underground coal mines in the late 1940's, and it was "accepted by

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  • GitHub - PaoPaoRobot/IROS2019-paper-list: IROS2019 paper

    IROS2019-paper-list. The 2019 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2019) has been held on November 4 – 8, 2019 in The Venetian Macao, Macau, China. IROS is one of the largest and most impacting robotics research conferences worldwide. It brings an international community of researchers, educators and

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  • Continuous control of an underground loader using deep

    Reinforcement learning control of an underground loader is investigated in simulated environment, using a multi-agent deep neural network approach. At the start of each loading cycle, one agent selects the dig position from a depth camera image of the pile of fragmented rock. A second agent is responsible for continuous control of the vehicle, with the goal of filling the bucket at the

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  • STRATA CONTROL TECHNOLOGY FOR MASS EXPLOITATION …

    1.2 Strata Control Technology 4 1.3 Continuous Miner in Underground Coal Winning 6 1.4 Description of the Study Area 8 1.5 Objective of Study 8 1.6 Methodology of the Present Study 9 1.7 Constraint Associate with the Study 9 1.8 Outline of the Thesis 10 CHAPTER – 2 LITRATURE REVIEW 11 2.0 General 12 2.1 Strata Mechanism 16

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  • Continuous control of an underground loader using deep

    At the start of each loading cycle, one agent selects the dig position from a depth camera image of the pile of fragmented rock. A second agent is responsible for continuous control of the vehicle, with the goal of filling the bucket at the selected loading point, while …

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  • Battery Electric 50 Tonne Haul Truck - Sandvik Mining and

    Torque, Continuous 6400 Nm 4720 ft-lb. The Z50 reduces demand on the mine's ventilation and cooling systems to enable deep underground mining. It improves overall working conditions and creates a healthier environment for everyone underground. Load and Haul division.

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  • Contiguous Pile Wall as a Deep Excavation Supporting System

    For deep cuts, lateral restraint can be provided by horizontal wales with either raker braces or by tieback anchors. For shallow excavations, a cantilevered wall is generally sufficient to resist earth pressures. Narrower excavations can be braced with cross struts. Diaphragm walling is a technique of constructing a continuous underground wall from

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  • Appendix E: Coal Mining and Processing Methods | Coal

    Under favorable conditions, the production from a continuous miner section can exceed 800,000 tons per year per continuous miner. Longwall Mining. Longwall mining is an automated form of underground coal mining characterized by high recovery and extraction rates, feasible only in relatively flat-lying, thick, and uniform coal beds.

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  • Underground methods of working coal

    fective roof control in the area . 0£ the workings are Plan of development headings using crawler mounted cutter and loader, electric drill and Detailed plan of rooms using Continuous Miner . 82 . Plan of Room and Pillar workings having rooms 22 feet wide and .

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  • Continuous Mining: A Pilot Study of The Role of Visual

    trams the machine using a remote control while walking near the front of the machine. However, operators tend to step alongside a moving continuous miner or beyond the supported roof for a better view while coal cutting or tram­ ming. Adding to this hazard is restricted work space with reduced visibility. The work environment in

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