GCF-1500 Percussive-Rotary Reverse Circulation Drill Are Used for Drilling Hard Rock Pile Hole
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TU631

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    Abstract:

    This drill are used for drilling medium and slight-weathered tufflave in Xiamen,diameter of pile holeis 1000mm,maximum depth is 47.56m.Percussive-rotary reverse circulation drilling is used to solve the problems,which could not be solved by using rotatary drilling,meanwhile suggestions on improving this drill are put intlforth.

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  • Published: March 25,1994