1·Theoretically, the jacking force can be enhanced arbitrarily, so the jacking distance can reach arbitrary length.
从理论上讲，千斤顶的顶力可以任意进步，从而也能达到任意长度的推顶间隔。
2·From the technology of reducing friction slurry and the relay jacks, the jacking force of long pipe jacking has been analyzed.
从触变泥浆减摩技术和中继接力技术两个方面对超长距离顶管施工中的顶推力进行了研究。
3·The jacking force has apparent effects on displacement and stress distribution of segments, and it is the most adverse load case during construction stage.
千斤顶顶力对施工阶段管片的位移、应力有明显的影响，千斤顶顶力作用是管片在施工状态下最不利的工况。
4·Then considering the friction forces on the well sides and well bottom, the permissible jacking force was calculated through the horizontal forces balance of the whole working well.
考虑了沉井底部和侧壁的摩阻力，由沉井整体水平向受力平衡计算允许顶力。
5·When the resistive moment of surrounding soil is less than the torsional moment of eccentric jacking force, stability failure of pipeline occurs and pipes deviates from the designed axes.
管道失稳是由于管道周围土体提供的抵抗力矩小于偏心顶推力而产生的扭转力矩，造成管节偏离设计轴线。
6·In construction of pipe jacking, the wall of working shaft and soil body behind the sidewall offers enormous supporting force to a lift.
在顶管施工中，千斤顶的支座需要巨大的反力支持，这些反力是由工作井的侧壁以及壁后土体提供的。
7·The top beam shall be arranged on transverse partition boards within the box. the beam jacking process shall be slow so as to avoid uneven force bearing of jacks.
顶梁位置设在箱内横隔板上，顶梁过程应缓慢进行，防止出现千斤顶受力不均的情况。
8·The construction of Pipe Jacking is beset with difficulty due to the large propulsive force for several years.
大口径长距离顶管施工顶进推力过大是困扰顶管施工多年的技术难题。
9·In the jacking point, the water flow approximation, the impact force is big, can not meet the flow outside the flow, the defense is difficult.
在顶冲点，水流逼近，冲击力大，无法迎托水流外移，防守困难。
10·Field data were analyzed. It showed that axis force increased along with pipe jacking at the very start, and it maintained stated basically when jacking to a certain distance.
实测数据分析表明，管节开始顶进时轴力随顶进距离增大而增大，顶进到一定距离后，基本维持在一定范围内。