This final operation is the"pullback"and installs the line pipe under the river.
这最后的操作叫“拖管”，它使管道就位于河床下面。
When the pump sets lose electricity during operation, for the sake of preventing pipe failure by negative pressure, installed a surge shaft at the head of the pipe line.
当泵组运行失电时，为防止负压对管道的破坏，在管道首都设置了调压井。
The normal operation of the high silt content water irrigation with pipe line is guaranteed by adopting the combinative technical measures of broke...
同时结合防爆破技术措施与管理措施，确保了管道浑水灌溉的正常运行。
The normal operation of the high silt content water irrigation with pipe line is guaranteed by adopting the combinative technical measures of broken cont…
同时结合防爆破技术措施与管理措施，确保了管道浑水灌溉的正常运行。
The normal operation of the high silt content water irrigation with pipe line is guaranteed by adopting the combinative technical measures of broken control an...
同时结合防爆破技术措施与管理措施，确保了管道浑水灌溉的正常运行。
The normal operation of the high silt content water irrigation with pipe line is guaranteed by adopting the combinative technical measures of broken control an...
同时结合防爆破技术措施与管理措施，确保了管道浑水灌溉的正常运行。
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