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The Cracked Tunnel Liner

机译:破裂的隧道衬里

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During commissioning of a hydro project, George got a call to come to a distant construction site to inspect the concrete-lined power tunnel. An inspection by the engineering team was scheduled in three days. The site staff had watered up the 6.8-meter-diameter, 340-meter-long tunnel, but the drainage system was discharging at several times the expected flow. The tunnel lay in horizontally stratified sandstone and shale, and paralleled the river. The tunnel was now being slowly dewatered through the spiral case drain.
机译:在水利项目的调试过程中,乔治接到一个电话,要求他到一个遥远的建筑工地检查衬砌混凝土的电力隧道。工程团队计划在三天内进行检查。现场工作人员浇灌了直径6.8米,长340米的隧道,但排水系统的排水量是预期流量的几倍。隧道位于水平分层的砂岩和页岩中,与河流平行。现在,隧道正通过螺旋形的壳体排水装置缓慢地脱水。

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