大坝观测孔有效铅垂空间的确定-中国矿业商务网_资讯中心 关键词 大坝 观测孔 孔斜 有效圆 约束圆 [gap=441]Key words dike-dam, observation hole, hole deviation, valid circle, restrained circle
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Manhole, observation hole and measure hole are set on the wall.
炉墙上设有人孔门、观察孔和测量孔。
Recognition of aquifer with both unite pump experiment data and long-time observation hole data in numerical model parametric recognition process gets a good effect.
在数值模型参数的识别过程中采用了联合抽水试验资料和长观孔资料对含水层参数进行识别，得到了较好的效果。
The molten observation hole needle (3) is arranged on the pipe fitting body so that a welding progress can be conveniently detected, and the welding quality can be controlled.
焊接熔观察孔针(3)设置在管件本体上，方便检测焊接进程，控制焊接质量。
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