| 摘要 |
A horizontal earth boring machine which is capable of transferring drill cuttings from the boring area back through the machine to allow for more efficient boring through both hard and soft rock strata is disclosed. The earth boring machine has an air powered hammer bit drill with air passageways therethrough for flushing the boring area and also has a rotary drive for use in rotating augers secured inside a casing for transporting the drill cuttings back through the casing and out an air diverter discharge near the front of the machine. The machine is capable of movement along a track so as to facilitate the boring operation.
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