Jacking system for excavation construction of cross passage and construction method using the same

Abstract

A jacking system is used for excavation construction of cross passage. The jacking system includes a reaction frame and force transmission member which connects the reaction frame with main tunnel segment(s) surrounding a starting end of the cross passage. The reaction frame is used to provide support for excavation apparatus along an excavation direction. Support force is transmitted to the main tunnel segment(s) surrounding the starting end of the cross passage via the force transmission member. Back support is cancelled from the jacking system and the structure and whole system are more simplified and intensive. In addition, the space behind the reaction frame is no longer occupied, which makes it possible to construct main tunnel and cross passages or multiple cross passages simultaneously. This jacking system not only has low manufacturing cost, but also reduces construction cost due to simplified operation, construction space saving and simultaneous construction procedures.

1 - 70 . (canceled) 
     
     
         71 . A jacking system for excavation construction of a T-shaped cross passage of a tunnel system, the cross passage communicating with at least one main channel, wherein the jacking system comprises a reaction frame ( 11 ) and force transmission member, the force transmission member connects the reaction frame ( 11 ) to a main tunnel segment located at a side of the reaction frame ( 11 ) facing the cross passage and surrounding a starting end of the cross passage, the reaction frame ( 11 ) is used to provide support for an excavation apparatus in an excavation direction, wherein supporting force is transmitted to the main tunnel segment surrounding the starting end of the cross passage via the force transmission member in a way that the force transmission member bears a pulling force. 
     
     
         72 . The jacking system according to  claim 71 , wherein the force transmission member comprises a plurality of force transmission pull rods ( 12 ) arranged spaced-apart around a circumferential direction of the cross passage;
 wherein at least a part of the transfer transmission pull rods ( 12 ) are directly connected to the main tunnel segment surrounding the starting end of the cross passage; and/or,   the starting end of the cross passage is provided with a starting casing ( 13 ) connected to the main tunnel segment, at least a part of the force transmission pull rods ( 12 ) being connected to the starting casing ( 13 ).   
     
     
         73 . The jacking system according to  claim 72 , wherein the force transmission pull rod ( 12 ) is configured as an unpowered pull rod. 
     
     
         74 . The jacking system according to  claim 72 , wherein the force transmission pull rod is configured as a powered pull rod capable of providing a driving force. 
     
     
         75 . The jacking system according to  claim 74 , wherein the powered pull rod is a reverse pulling force hydraulic cylinder; and/or
 wherein each of the powered pull rods has an independent control unit.   
     
     
         76 . The jacking system according to  claim 74 , wherein the jacking system further comprises a slide rail ( 15 ) extending along a central axis of the cross passage, the reaction frame ( 11 ) being movable along the slide rail ( 15 ). 
     
     
         77 . The jacking system according to  claim 72 , wherein one end of the force transmission pull rod ( 12 ) is pivotally connected to the reaction frame ( 11 ), and/or the other end of the force transmission pull rod ( 12 ) is pivotally connected to the main tunnel segment or to a starting casing ( 13 ) connected to the main tunnel segment. 
     
     
         78 . The jacking system according to  claim 77  wherein a pivot axis of the force transmission pull rod ( 12 ) is perpendicular to the axial direction of the cross passage. 
     
     
         79 . The jacking system according to  claim 72 , wherein one end of the force transmission pull rod ( 12 ) is removably connected to the reaction frame ( 11 ), and/or the other end of the force transmission pull rod ( 12 ) is removably connected to the main tunnel segment or a starting casing ( 13 ) connected to the main tunnel segment. 
     
     
         80 . The jacking system according to  claim 77 , wherein the force transmission pull rod ( 12 ) is removably disposed by a coupling device, the coupling device comprising:
 a mounting base having two side walls which are opposite and spaced apart, an end of said force transmission pull rod ( 12 ) being disposed between the two side walls; and   a pin, wherein the mounting base and an end of the force transmission pull rod ( 12 ) are respectively provided with a mounting hole, and the pin passes through the mounting holes of the mounting base and the force transmission pull rod ( 12 ).   
     
     
         81 . The jacking system according to  claim 80 , wherein the mounting base is fixedly disposed on the reaction frame ( 11 ), or the mounting base is fixed on the main tunnel segment, or the jacking system comprises a starting casing fixedly connected to the main tunnel segment, and the mounting base is fixed on the starting casing. 
     
     
         82 . The jacking system according to  claim 80 , wherein an end of the force transmission pull rod ( 12 ) is provided with a fine adjustment structure, the mounting hole passes through the fine adjustment structure, and the fine adjustment structure has a drum-shaped outwardly-projecting circumferential surface surrounding the mounting hole. 
     
     
         83 . The jacking system according to  claim 71 , wherein a side of the reaction frame ( 11 ) facing the cross passage is provided with a jacking drive unit ( 14 ) including a plurality of hydraulic cylinders in a quadrant-symmetrical manner and spaced-apart around a central axis of the cross passage. 
     
     
         84 . The jacking system according to  claim 83 , wherein one end of the plurality of hydraulic cylinders is connected to the reaction frame ( 11 ) and the other end is connected to an annular abutment member ( 141 ) which is used to abut against the excavation apparatus or the segment of the cross passage. 
     
     
         85 . The jacking system according to  claim 71 , wherein a material delivery hole ( 111 ) running through the reaction frame ( 11 ) is disposed at a position of the reaction frame corresponding to the cross passage. 
     
     
         86 . A method of using the jacking system according to  claim 71  for excavation construction of a T-shaped cross passage of a tunnel system, wherein the method comprises:
 delivering a jacking system, an excavation apparatus and a corollary equipment to a position where a cross passage is to be excavated, and fixing them; 
 adjusting positions of the jacking system and the excavation apparatus according to a planned excavation direction; 
 connecting a reaction frame to a main tunnel segment through a force transmission member; 
 moving the excavation apparatus to a planned starting position; 
 excavating and assembling cross passage modular units; 
 completing the construction of the cross passage. 
 
     
     
         87 . The method according to  claim 86 , wherein before the step of delivering a jacking system, an excavation apparatus and a corollary equipment to a position where a cross passage is to be excavated, the method further comprises:
 combining the corollary equipment, the jacking system and the excavation apparatus into a unitary structure.   
     
     
         88 . The method according to  claim 86 , wherein the corollary equipment comprises a starting casing, and the method further comprises:
 connecting the starting casing with the main tunnel segment, and connecting the reaction frame to the starting casing via a force transmission member.   
     
     
         89 . The method according to  claim 86 , wherein the excavation apparatus is a pipe jacking tunneling machine, the force transmission member is an unpowered force transmission pull rod, the cross passage modular unit is a pipe section, and the method further comprises, prior to the step of excavating and assembling cross passage modular units:
 mounting a jacking drive unit which acts directly on the reaction frame;   and wherein the step of excavating and assembling cross passage modular units comprises:   using the pipe jacking machine to complete spatial advancement of the pipe section;   disconnecting and removing at least part of the force transmission pull rods that interfere with a pipe section delivery passage, from the pipe section delivery passage;   retracting the jacking drive unit;   delivering the pipe section to an assembling position to complete assembling;   extending the jacking drive unit out to complete close contact with the assembled pipe section;   restoring the force transmission pull rod to a connected state.   
     
     
         90 . The method according to  claim 86 , wherein the excavation apparatus is the pipe jacking tunneling machine, the force transmission member is a force transmission pull rod capable of providing a driving force, the cross passage modular unit is a pipe section, and the step of excavating and assembling cross passage modular units comprises:
 disconnecting and removing the force transmission pull rods that interfere with a pipe section delivery passage, from the pipe section delivery passage;   delivering the pipe section to an assembling position to complete assembling;   restoring the force transmission pull rod to a connected state;   driving the force transmission pull rod to push the pipe jacking method tunneling machine forward via the reaction frame to complete the excavation of the pipe section;   driving the force transmission pull rod reversely to retract the reaction frame;   and wherein before the step of driving the force transmission pull rod reversely to retract the reaction frame, the method comprises:   fixing a pipe section closest to the reaction frame by a retaining device.