| 摘要 |
A tunneling machine body carrying a rotary cutterhead can be advanced continuously by exerting advancing thrust force on it, first by top and bottom jack bipods reacting from top and bottom anchor shoes, respectively, in anchored condition against the tunnel wall and alternately by side jack bipods exerting advancing force on the tunneling machine body and reacting from side anchor shoes set in anchored condition against the tunnel wall. The anchor shoes are floating relative to the tunneling machine body and connected to it only by the bipods producing the thrust for advancing the tunneling machine body. The top and bottom anchor shoes are directly connected by two pairs of upright fluid-pressure shoe-setting jacks extending chordwise between such shoes. The side anchor shoes are directly connected by two pairs of transverse fluid-pressure shoe-setting jacks extending chordwise between such shoes. The two pairs of upright anchor-setting jacks are located close together longitudinally of the tunnel boring machine and between the two pairs of transverse jacks. Alternatively, the anchor shoes of one pair are pivotally connected to the body instead of being floating relative to the body while the anchor shoes of the other pair are floating relative to the body. The tunneling machine body and rotary cutter head are advanced only by jacks exerting advancing force on the tunneling machine body and reacting from the floating anchor shoes. Mechanism for placing tunnel liner sections can move quadrant tunnel lining sections lengthwise and circumferentially of the tunnel and place them in edge-abutting relationship forming successive lining rings.
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