Transcription of Effectiveness of Hydrofracture Prediction for HDD Design
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Effectiveness of Hydrofracture Prediction for HDD Design
North American Society for Trenchless Technology (NASTT). No-Dig Show 2010. _____. Chicago, Illinois May 2-7, 2010. Paper F-1-01. Effectiveness OF Hydrofracture Prediction . FOR HDD Design . Kimberlie Staheli, , , Christopher G. Price1, Laura Wetter, 1. Staheli Trenchless Consultants, Inc. Seattle, WA (425) 205-4930. ABSTRACT: Mitigation against the risk of Hydrofracture is an essential part of horizontal directional drill (HDD). Design . Previous studies have developed methods to evaluate Hydrofracture risk based on soil and fluid mechanics properties, including cavity expansion theory (Luger and Hergarden, 1988; Bennett and Wallin, 2008; Ariaratnam et al.)
Paper F-1-01 - 5 Figure 2. Effects of Changes in Groundwater Level on P max From Figure 1 it can be seen that both the groundwater level and the bore radius are inversely correlated with
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