In ordinary stripping operations, the pipe falls into the wellbore under its own weight, and no additional downward force or pushing is required.
在平常的不压井起下钻作业中，管柱下入井眼是依靠其自身重量，不需要附加的向下载荷或者推力。
According to different types of constructions, the concrete methods of rock blasting technology of pipe pushing are discussed.
针对不同的工程类型，探讨顶管穿越石方爆破的具体方法。
Soil pressure control is one of the most important technology of pipe pushing engineering with earth balance shield machine.
土压平衡式顶管掘进机机头泥土仓土压力控制是顶管工程中最关键的技术之一。
After taking the proper measures, the construction of pipe pushing has been successfully fulfilled.
在采取了相应的有效措施后，顺利完成了顶管施工任务。
The instrument was used already with the pushing pipe methyl at Fuzhou. Applied result was satisfactory.
仪器已在福州用于顶管法下水道的敷设，取得了满意的结果。
Pushing force calculation and main motor capacity calibration are conducted for the three push bench pipe mills currently used in the country.
对我国现有3套顶管机进行了顶推力计算，对主电机容量进行了校验。
The construction method of large diameter large curvature pushing pipe is first used in China and has been used rarely in other countries.
大口径急曲线顶管工法在我国首次使用，在国际上也很少见。
The construction method of large diameter large curvature pushing pipe is first used in China and has been used rarely in other countries.
大口径急曲线顶管工法在我国首次使用，在国际上也很少见。
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