Vertical and annular reinforcing steel bar stress and pipe-soil contact pressure during pipe jacking were monitored on the spot.
对顶进过程中管道纵向与环向钢筋应力及管土接触压力进行了现场测试。
Pipe-soil contact pressure increased slowly along with pipe jacking, and it also maintained stated basically after some distance. Contact pressure of tip pipe was greatly affected by grouting.
管土接触压力随管道的顶进一开始缓慢上升，到一定距离后基本保持在一定范围内。
Jacking-up apparatus for high pressure oil.
高压油顶起重装置。
The article introduces the inverting way of assembling an oil tank by air jacking, and analyzes the pressure and air flow needed by air jack system.
介绍拱顶油罐的充气顶升倒装之施工方法，对充气所需风量、风压进行了分析。
Motor has thermo-elements to monitor temperature, electronic tachometer and high pressure oil jacking device when needed. The excitation device currently uses micro- computer control device.
电机带有测温元件以监控温度，还带有电子测速装置、需要时可带高压油顶起装置。
Motor has thermo-elements to monitor temperature, electronic tachometer and high pressure oil jacking device when needed. The excitation device currently uses micro- computer control device.
电机带有测温元件以监控温度，还带有电子测速装置、需要时可带高压油顶起装置。
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