掲載雑誌(和): 岩盤力学に関するシンポジウム講演論文集 Vol: 24巻 年: 1992年 頁: 31-35頁 著者(和): 下茂 道人, 井尻 裕二, 飯星 茂, 橋本 憲和, 長田 和洋 タイトル(和): トモグラフィーとクロスホ−ル透水試験による岩盤内地下水浸透経路の調査 抄録(和):
- キーワード(和): - 掲載雑誌(英): PROCEEDINGS OF THE SYMPOSIUM ON ROCK MECHANICS 著者(英): Michito SHIMO, Yuji IJIRI, Shigeru IIHOSHI, Norikazu HASHIMOTO, Kazuhiro NAGATA タイトル(英): DETECTION OF GROUNWATER FLOW PATHS IN A ROCK USING GEOTOMOGRAPHY AND CROSS-HOLE INJECTION TEST 抄録(英):
It has been well recognized that fractures play an important role in the groundwater flow through fractured rock. The authors have conducted seismic and radar tomography surveys and cross-hole injection test to detect major discontinuities and flow paths at 50m x 30m rectangular test area in a granitic rock site. The reconstructed slowness and amplitude profiles, the latter was obtained only for radar tomography, compared well with the fracture distribution observed from Borehole TV and radar reflection survey. From cross-hole injection test, it has been shown that some of fracture zones detected by tomography and radar reflection survey are hydraulicly connected, however, some other flow paths might have been missed where groundwater table is not kept high enough above the boreholes . キーワード(英): - 記事区分 - 区分    委員会論文集