کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8895120 | 1629898 | 2018 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cross-hole fracture connectivity assessed using hydraulic responses during liner installations in crystalline bedrock boreholes
ترجمه فارسی عنوان
اتصال شکستگی متقاطع سوراخ شده با استفاده از پاسخ های هیدرولیکی در طول تاسیسات چسبیده در گودال های کریستالی
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کلمات کلیدی
بستر کریستالی، خطوط حفاری چاه، آزمایش متقابل سوراخ، آزمایش هیدرولیکی، اتصال شکستگی،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
چکیده انگلیسی
In order to continually improve the current understanding of flow and transport in crystalline bedrock environments, developing and improving fracture system characterization techniques is an important area of study. The presented research examines the installation of flexible, impermeable FLUTe⢠liners as a means for assessing cross-hole fracture connectivity. FLUTe⢠liners are used to generate a new style of hydraulic pulse, with pressure response monitored in a nearby network of open boreholes drilled in gneissic rock of the Canadian Shield in eastern Ontario, Canada. Borehole liners were installed in six existing 10-15â¯cm diameter boreholes located 10-35â¯m apart and drilled to depths ranging between 25-45â¯m. Liner installation tests were completed consecutively with the number of observation wells available for each test ranging between one and six. The collected pressure response data have been analyzed to identify significant groundwater flow paths between source and observation boreholes as well as to estimate inter-well transmissivity and storativity using a conventional type-curve analysis. While the applied solution relies on a number of general assumptions, it has been found that reasonable comparison can be made to previously completed pulse interference and pumping tests. Results of this research indicate areas where method refinement is necessary, but, nonetheless, highlight the potential for use in crystalline bedrock environments. This method may provide value to future site characterization efforts given that it is complementary to, and can be used in conjunction with, other currently employed borehole liner applications, such as the removal of cross-connection at contaminated sites and the assessment of discrete fracture distributions when boreholes are sealed, recreating natural hydraulic gradient conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hydrology - Volume 556, January 2018, Pages 233-246
Journal: Journal of Hydrology - Volume 556, January 2018, Pages 233-246
نویسندگان
Elisha Persaud, Jana Levison, Peeter Pehme, Kentner Novakowski, Beth Parker,