Electrical equipment for coal mines, for use underground, Part 1: General requirementsdoi:AS/NZS 4871.1:2002规定了用于地下煤矿的所有电气设备的一般设计,制造,测试和性能标准.
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REQUIREMENTS FOR THE CHANGE OF ELECTRICAL SERVICES This disclosure concerns an electrical power conversion device supplied by a DC power source with electrical power;the problem arises that in a device prov... K Fujie,I Tottori 被引量: 0发表: 2021年 Electrical Reliability Services - Celebrates 50...
The article offers information on the underground electric utility and mine service vehicle, the Electric Utility Vehicle (EUV) manufactured by RES Equipment Sales in Ontario. It notes that this vehicle is useful in the mining industry as mining areas are already going deeper and the cost of vent...
The development of tunnel and underground engineering not only depends on new design methods and construction techniques, but also puts forward requirements for the development of new materials. The deficiency of traditional materials leads to low engineering efficiency, poor engineering quality, high ...
Fig. 2. Requirements necessary for a UPSP in an abandoned mine and the limits influencing the decision-making. The present study compiles current knowledge concerning potential processes implicated in the conversion of a mine into a UPSP and, in doing so, furnishes a comprehensive overview of ...
Considering the requirements (and technical scope), they can be made up to 2000 m deep and have a volume of 1 Mm3, a height between 300 and 500 m, and around a 50–100 m diameter, enabling them to store gas in massive quantities. Figure 3 illustrates these structures based on sonar ...
4.3.2. Service Functional Requirements of an Underground Utility Tunnel As shown inTable 6, the required functions of an underground utility tunnel digital twin system were deduced according to the scenario when using an underground utility tunnel digital twin system based on the scenario of the sit...
Underground Construction Co., Inc. has installed electrical transmission and distribution facilities for both public and private owners throughout the Western United States. Learn More Gas Transmission & Distribution Underground Construction Co., Inc. has worked in industrial plants, refineries and rail ...
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