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It was a startlingly simple proposition: rather than drill through rock, the atomic subterrene would use heat from a nuclear reactor to melt through it, digging wider tunnels faster and more efficiently than a conventional Tunnel-Boring Machine.
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and 70's in other underground mining operations (including coal mining in England). The penetration rates achieved by the machine in most of these projects were far above the capabilities of any drill and blast operation, yet overall tunneling costs could
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ZLJ tunnel drilling rig . 1.The machine mainly used for underground internal various angle water prospecting, exploration of coal, gas drainage, dust protection and water injection and other uses of the drilling. 2.360 degrees rotary drilling drilling of
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How Time Warner installs underground fiber optic cable: Using a directional horizontal drilling machine with an angled drill bit and a transmitter & detector...
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investigations and required rock testing, cutterhead design optimization is an integral part of the machine selection to ensure a successful application of the machines in a specific underground mine environment. This
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KAMY series of Roadheaders offers the best cutting performance in a wide range of rock formations. Equipped with geometrically optimized transverse or longitudinal cutter heads, these flexible machines can be used to excavate subway tunnels, road tunnels, railway tunnels and water tunnels without using explosives.