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首页> 外文会议>Boundaries of Rock Mechanics: Recent Advances and Challenges for the 21st Century >Detection of thin weak zone in weathered rocks from automatic monitoring of pneumatic rotary-percussive drilling
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Detection of thin weak zone in weathered rocks from automatic monitoring of pneumatic rotary-percussive drilling

机译：通过自动旋转气动冲击钻进监测风化岩石中的薄弱带

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Weathered rock mass can have thin weak zones or cavities. These weak zones or cavities may not be detected during conventional ground investigation because the drillhole investigation is limited and the weak zones are thin. This paper uses the recently developed DPM methodology to divide the DPM data into sub-processes such as pushing, pulling and drilling and builds criteria so that thin weak zones can be detected from the sorted DPM data. The method establishes the relationship between the drilling rate and its downward thrust pressure and the relationship between the pushing-in rate and its downward thrust pressure. Case studies are given to illustrate the detection method. The case studies demonstrate that the proposed method has good potential for accurately detecting thin weak zones in weathered granitic or volcanic rocks.
机译：风化的岩体可以具有薄弱区域或空洞。在常规地面调查期间，可能无法检测到这些薄弱区域或空腔，因为钻孔调查有限且薄弱区域薄。本文使用最新开发的DPM方法将DPM数据划分为子过程，例如推，拉和钻，并建立标准，以便可以从排序的DPM数据中检测出薄弱区域。该方法建立钻井速率与其向下推力压力之间的关系以及推入速率与其向下推力压力之间的关系。通过案例研究来说明检测方法。案例研究表明，该方法具有很好的潜力，可以准确地检测风化花岗岩或火山岩中的薄弱带。

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