公开(公告)号：US3919851A

公开(公告)日：1975-11-18

申请号：US47988174

申请日：1974-06-17

申请人： M & P PIPE JACKING CORP

发明人： PLOURDE MAURICE J

IPC分类号： E21D9/06 ,  E21D11/00 ,  E21D19/00

CPC分类号： E21D9/0607

摘要： A tunnel excavating and lining apparatus comprises a plurality of hollow cylindrical shields arranged in end-to-end coaxial relationship with a cutting and steering shield in a forwardmost position, an intermediate shield, and a power shield in a rearwardmost position. Six 100 ton power jacks are disposed in equal circumaxially spaced relationship within the power shield with rear end portions engaging a slidable cylindrical push ring. The push ring is disposed in the power shield between the jacks and a forwardmost cylindrical tunnel liner element. Tunnel liner elements are sectional and arranged in coaxial end-to-end relationship with external diameters slightly less than the internal diameter of the power shield. Thus, the forwardmost liner element can be constructed within the power shield and when the push ring engages the same the power shield can thus be advanced by simultaneous operation of the power jacks.

摘要翻译： 隧道挖掘和衬砌装置包括多个中空圆柱形屏蔽件，其以与最前面位置的切割和转向屏蔽件，中间屏蔽件和最后位置的电源屏蔽端对端同轴关系布置。 六个100吨的动力千斤顶在功率屏蔽内具有相等的外围间隔的关系，后端部分接合可滑动的圆柱形推环。 推环设置在千斤顶之间的功率屏蔽和最前面的圆柱形隧道衬垫元件之间。 隧道衬垫元件是以同轴的端对端关系进行分段布置，其外径略小于功率屏蔽的内径。 因此，最前面的衬垫元件可以构造在功率屏蔽内，并且当推环接合时，功率屏蔽可以通过电源插座的同时操作来提前。