JP2007138702A - Excavation construction method for forward advance of working cylinder and retraction of all cross sections in tunnel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To store a clod of the earth formed by cutting the natural ground into a cylindrical shape by only the thickness of a blade by a rigid and steel working cylinder having a double structure into an inner side working cylinder, transfer the clod of the earth backward together with a vessel to remove the clod of the earth in the cross section, and apply a countermeasure construction method from this space to excavate while retracting all the cross sections. <P>SOLUTION: This tunnel excavation device is a two-story mobile arch center provided with five working cylinders and connecting an excavation part having a cutting blade 17 at its tip with a working cylinder jacking part provided with a working cylinder machine chamber case body 54 at the rearmost end. A hydraulic jack 60 using a supporting column of the arch center as a reaction force member is arranged to close the cylinder by a working cylinder closing door case body 64 having a mud absorbing pump 65 and incorporating a mud collecting tank 66. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

In the present invention, a moving center barrel that can be propelled by a hydraulic jack is mounted with a plurality of hollow cylindrical steel work tubes that are tight on the outside and inside, and an excavation power transmission rod is provided inside the outside work tube. It has an outer work cylinder, which divides the most peripheral part of the outer work cylinder, drives the excavation part equipped with a cutting blade that can be rotated independently, and pulls out the natural soil block at the same time. Is propelled with a hydraulic jack, and the soil block is accommodated in the inner working cylinder.
Moreover, it cuts off from a natural ground at right angles with the lump cutting apparatus installed immediately after the excavation part, and excavates a natural ground by moving an inner work cylinder back.

By taking sufficient countermeasures from the outer work cylinder space secured by this work, the ground section that has been cut out and weakened is retreated with the work cylinder in a retreating posture that demonstrates the maximum efficiency posture of an excavator such as a backhoe. However, the present invention relates to a tunnel excavation method for shaping and excavating the entire cross section.

Tunnel excavation proceeds from the outside to the back along the tunnel axis by pushing the face face in one direction, and for large ground pressure due to excavation, it is supported by steel support, rock bolts, etc. It is dealt with by the construction method.

Various measures are required to deal with the collapse of the face in soft geology, but the construction can only be done from the front of the face, so the work direction and work space are limited, making it inefficient and redundant work. Often difficult.
To cope with this problem, the tunnel has been completed by implementing countermeasures such as ground improvement methods and freezing methods corresponding to various geological features based on preliminary surveys.
In addition, the tunnel is completed by excavating the entire cross-section with a large tunnel boring machine (hereinafter referred to as TBM) and carrying out concrete lining.

  Conventional tunnel excavation is carried out according to the selected excavation method according to the conditions such as topography, geology, groundwater level, etc., and various auxiliary construction methods and countermeasure construction methods such as ground improvement are used together. Is adopted because it is economical.

  However, not all natural conditions are known, and sometimes unexpected situations such as abnormal bias pressure or flooding often occur. It is an indispensable task to establish a countermeasure method based on the above.

In addition, the construction of this countermeasure construction method involves one-side pressing work from the blade edge, so that the direction of work, securing of work space, confirmation of safety and certainty, etc. are major issues.

In the case of adopting TBM, the entire cross section is cut with a cutting blade, and the mud is discharged backward.
For this reason, a powerful horsepower is required for cutting, and the influence of the reaction force on the natural ground is large, the control of the behavior of the TBM is complicated, and the equipment is enlarged and complicated.
In addition, geological conditions, determination of equipment scale, and economics are major issues when adopting TBM.

In order to achieve the above purpose, the foundation pedestal is buried on the construction base that matches the normal vertical crossing plan of the tunnel in the groove excavated according to the shape of the foundation pedestal to resist large loads and reaction forces. Establish as possible.
The moving centle is moved to the foundation pedestal by a guide bearing or the like and installed, and fixed by a fixing bolt to start excavation.

The work cylinder, which is the main body of excavation, is made of steel and has a hollow cylindrical shape, and the outer and inner flanges of the cylinder are reinforced with reinforcing bellows at regular intervals in the axial direction and the circumferential direction so that machine work can be performed sufficiently. Space is secured and the structure is divided into an outer shell and an inner shell that fit closely together.
The outer shell cylinder is a set of two reinforced bellows in which a transmission rod for transmitting the driving force from the drive motor of the propulsion machine room is arranged in the space between the outer casing and the inner casing at regular intervals in the axial direction. And fixed through a bearing attached to a circumferential reinforcement prone to intersect at right angles to this.

Between the transmission rod and the transmission rod, a sludge pipe that transfers rocks and mud cut at the tip cutting part to the rear is installed.
Further, in order to facilitate the movement of the inner shell working cylinder, a rod-shaped bearing is installed on the upper part of the axially reinforced bellows in the lower half of the cross section where the load is applied so as to contact the inner shell working cylinder.

  The inner shell cylinder is a container for storing and transferring the cut chunk of soil, and is sufficiently reinforced with a shaft and a circumferential reinforcing bellow so as to withstand the weight of the chunk.

The outer edge and inner edge of the outer circumference of the outer shell work cylinder are divided into even regular polygons, supported by a shaped cutting blade support rod, and equipped with a cutting blade that can rotate independently via the cutting blade rotating shaft A cut portion is provided.
Then, with the thrust of the hydraulic jack, the polygon including the circumference of the pressing outer shell cylinder is cut to the mirror surface lump so as to be pulled out by the blade thickness. Thus, it is housed inside the inner shell work cylinder.

The rotational force of the cutting blade that cuts the clot is converted to a rotational force of the power transmission rod by a driving force transmission gear at a right angle, and is transmitted to the cutting blade whose tooth shape is carved through the driving force transmission planetary gear. Cut the clot.

In order to protect these power transmission mechanisms, the space of the mechanism is filled with a reinforcing spacer, fixed to the cutting blade support rod with a fastening bolt, and firmly integrated.

Immediately after the cutting section, a wire saw cutting device is provided in order to cut off the soil block pulled out from the natural ground at a right angle.
The cutting device is provided immediately after the excavation part with an installation space separated by a circumferential reinforcing prong, and stores a wire saw fixed with a shear pin that also serves as a fastener.

In use, when the wire saw is rotated by the driving force of the wire saw drive motor, the shear pin is broken and the earth lump is cut at a right angle.
An accommodating portion that allows the wire saw to loosen due to the progress of cutting is required, and a loosening device for winding is provided.

The loosening device is composed of a fixed pulley and multiple movable pulleys facing each other, and a telescopic comb-like part that embeds the body wire saw between them is the main structure, and the device is housed on a guide rail to control this behavior. .
While extending the winding wire from the end of this device and connecting it to a winding stepping motor with a spring switch that can be turned on and off when a certain tension is exceeded, widen the interval of the comb-shaped part while driving to this part Store extra wire saws.
Once you have finished cutting, remove the clod and re-install the wire saw.

A propulsion machine room is provided at the tail end of the work cylinder side to generate power for excavating the tunnel, propelling and retreating the work cylinder.
The propulsion machine room is a rectangular housing that fits between the steel columns of the moving center work stand, and is rigidly connected to the housing with a reinforcing stiffener to increase rigidity and integrate with the outer shell work cylinder.
Drive motors are installed at the four corners, and hydraulic jacks for propulsion (or retraction) are installed between the reinforcement stiffeners on the side that comes into contact with the left and right gantry pillars, between the reinforcement stiffeners and detachable mounting bolts. Connect with force member.

  As the reaction force member of the above hydraulic jack, the column of the work platform is connected with the reaction force transmission stiffener in the axial direction to increase the rigidity, and the head (or end) of the hydraulic jack is attached via a mounting bolt that can be attached to and detached from this , Resist the great reaction force throughout the gantry.

At the end of the propulsion machine room on the wellhead side, a hollow rectangular enclosure closure door is provided with a mounting bracket.
A mud collection tank with a built-in mud pump is installed inside the closed door, and a mud pipe connected by a mounting head is introduced into this tank.
Moreover, it connects with an attachment head with respect to the high pressure water supply pipe which penetrates the center part of a power transmission rod, and supplies high pressure water.
Control of propulsion (retreat) power, rotation of the cutting blade, supply of high-pressure water, and drainage from the mud collection tank are all performed by operating the operation panel installed on the door.
These electric power, high-pressure water supply, and waste mud are supplied or discharged by the power supply, water supply, and mud discharge facilities installed along with the support column.

The moving center placed on the base pedestal shall be a work platform that can be moved with guide bearings and fixed to the pedestal with fixing bolts.
The moving center is composed of two floors, the upper and lower working floors. It is composed of H-shaped steel columns, vertical beam girders, cross beam girders, and arch ribs to withstand heavy loads such as dirt, and the outer periphery is covered with skin plates. A rigid work platform with a steel floor erected in the girder.

A lifting elevator for weight as an approach to the upper work floor will be installed in a section of the upper work floor at the central wellhead side.
The work tube loading section lane on each floor can be moved back and forth with ball bearings and fixed with fixing bolts, and a work tube guide receiving rail is installed to facilitate stable and vertical movement of the work tube.

  To complete the one-stroke propulsion of the maximum propulsion length and transfer the inner shell work cylinder to the rear, a lead-in line is laid immediately after the lower work platform, and work is performed on the work cylinder transfer wagon that matches the height of the lower work floor. It is loaded via the tube receiving rail and transferred to the mass processing section outside the tunnel.

  For removal of soil at the dump site, the transferred inner shell cylinder is disassembled into two leaves with a diameter, and multiple disassembly joints are provided on the circumferential reinforcing bellows for assembly. The structure should be removable.

In the outer shell work cylinder after the inner shell work cylinder is discharged, a lock bolt driving machine, various injection machines, load cutter, A structure that can carry the backhoe etc. by itself and fix the work platform.

Also, in order to deal with the case where the work of countermeasures such as the installation of lock bolts, various injection methods, freezing methods, etc. covers the entire work cylinder, the outer shell work cylinder is designed with a lock bolt in mind, and is a multi-purpose screw-comb type. A working hole is provided.

Since a large number of multipurpose work holes are required at regular intervals, the cross section is weakened. In order to prevent this, the outer shell of the outer shell work cylinder and the reinforcing rod attached to the inner shell are provided around the multipurpose work hole.

For work cylinders that have completed the countermeasures, retreat the work cylinder, break the mirrored blob that has become fragile by cutting out with a load cutter, shape excavation, accumulation of excavated soil by backhoe, loading work, steel making by crane Carry out tasks such as support work and assembly of foundation pedestals.

Since the present invention is configured as described above, the following effects are exhibited.
The working cylinder in the present invention is a solid steel cylinder having a small cross section and a double structure, and has a structure in which two excavation parts and a propulsion machine part are connected to each other. It has a cutting part that can rotate and cut, and it does not rotate itself against large ground pressure like a conventional shield excavator and excavates the entire area of the cylinder, but instead of a regular polygon that includes the circumference of the work cylinder Since only the blade thickness is cut in a circumferential shape, the maximum effect can be achieved with the minimum work by concentrating the force on the working point without excessively affecting the natural ground, and dramatic labor savings can be achieved.

  The lump cut into a cylindrical shape is stored in the inner shell cylinder as it is, separated by a lump cutting device at regular intervals, transferred to the lump processing section outside the mine, and dismantled. The volume change rate of the excavated soil can be minimized, the excavation and remaining soil processing costs can be reduced, the work space can be minimized, and efficient work can be carried out.

The clot stored in the inner shell cylinder is a geological sample of the front line, and detailed geological data can be obtained over the entire tunnel cross section. The construction method can be examined and determined, and the construction method can be implemented from the inside of the work cylinder, which is safe and the construction base surface is structurally secured.
In this way, energy saving, manpower saving, and factoryization of tunnel construction are promoted, and there is an effect that safety can be improved in tunnel construction management and efficient, economical and constant progress can be achieved.

By operating the hydraulic pump for propelling the work cylinder attached to the moving center, the work cylinder propels and presses the excavation part against the mirror surface, and at the same time, the rotational force of the drive motor rotates the rotary cutting blade via the drive force transmission rod. .
At this time, high-pressure water is sprayed from the high-pressure water pipe provided at the center of the driving force transmission rod to the mirror clot, creating a trigger for cutting and promoting the lubrication of the cutting blade. In order to cut according to the shape of the blade including the mirror, the specular soil is sequentially stored in the inner shell work cylinder simultaneously with the propulsion.

  The cutting sludge is attracted by the rotational force of the cutting blades facing each other and guided to the vicinity of the drainage pipe installed between the adjacent cutting blades. Then, it is collected in the mud collection tank by the suction force of the suction pump, and discharged from the total mud pipe to the drainage ditch and further to the settling basin outside the mine.

From each work cylinder that has been propelled to the maximum length by propelling each work cylinder, it is separated from the specular lump by a lump cutting device, and the clot is stored, and a heavy inner shell work cylinder is received through the rail, elevator, etc. By loading it into a transport wagon and sending it out of the mine, the specular clot is removed and the excavation work space is secured.

The work cylinders loaded on the work platform can operate independently.
The excavation speed of each work cylinder depends on the geology encountered, and there are differences, but each work vehicle is moved into the work cylinder according to the work plan from the work cylinder that has been propelled first and the inner shell work cylinder has been sent out. It is possible to carry it in by self-propelled, fix it at a predetermined position, and implement necessary countermeasures such as placing a lock bolt and various injection works, and secure the safety of the excavation section at an early stage.

For the section where the delivery of the inner cylinder was completed and the countermeasure method was completed, according to the work plan, priority was given to retreating the upper floor-work cylinder, ensuring space while retreating the entire work cylinder, and first the lower work floor In addition, the excavation soil will be collected and loaded by the backhoe and discharged by the belt conveyor.
The clot that has become brittle due to being hollowed out from the upper work floor is crushed by a backhoe, road cutter, etc. that can be shaped and excavated in an efficient receding posture, and excavated soil into the hollow space of the lower floor secured by retreating. Free fall and proceed with excavation.
For sections where cross-section excavation has been completed, a series of objective work processes, such as installation of steel supports using cranes and assembly of foundation pedestals, are mechanized, and work is performed at a constant progress rate that can be assumed. Is carried out.

The cylinder head or piston head is mounted via staggered removable mounting bolts to connect the machine room side reinforcement stiffener and the reinforcement stiffener between the H-shaped steel columns to obtain the reaction force. It is driven by the thrust of expansion or contraction of the hydraulic pump.
And for every working length of the piston, it can move forward and backward by attaching and detaching the mounting bolt.

  The embodiment will be described with reference to the drawings, in which FIG. 1 shows a cross section of a standard tunnel.

In the embodiment shown in FIG. 2, it is a cross-sectional view of a moving centle which is the main body of the excavator, and is two stories and is equipped with five work cylinders.
And about the work cylinder of the 2nd floor where a big load is applied, the H-shaped steel support | pillar 7 is distribute | arranged directly under and the load is supported.
The moving centle skeleton is rigidly connected with vertical and horizontal girders, H-shaped steel pillars 7 and arch ribs 6, and the surrounding is covered with a skin plate 5 that can be moved up and down by several centimeters to improve water tightness and rigidity. Yes.

  The embodiment shown in FIG. 3 is a layout diagram of work cylinders and shows the concept of the construction position of the lock bolt 14 as a construction example of the countermeasure construction method.

The embodiment shown in FIG. 4 is a cross-sectional view of a work cylinder and shows a double structure of an outer shell work cylinder 9 and an inner shell work cylinder 10 which are in a hollow cylindrical shape and are in contact with each other.
The front end portion of the outer shell working cylinder outer plate 33 and the outer shell working cylinder inner collar 31 are divided into eight, and two pairs face each other in a letter C shape and include the circumference of the outer shell working cylinder 9 The cutting blade support rod 20 shaped into a square shape is used to bundle the cutting blades 17 stacked in four stages so as to penetrate through the cutting blade rotating shaft 19, and are fixed by the lower cutting blade protection plate 23 and the cutting blade clamping bolt 24. Yes.
The work cylinder of the C-C cross section is reinforced with a pair of outer shell work cylinder 32 and inner shell work cylinder 29 at regular intervals in the longitudinal and transverse direction because it is necessary to support a large load. The driving force transmission rod 25 and the mud pipe 36 are disposed in this space.
Further, a moving bearing 34 is provided on the outer shell working cylinder prone pad 32 so as to contact the inner shell working cylinder 10.
Regarding the BB cross section, the driving force is transmitted to the driving force transmission planetary gear 26 by the transmission rod tip gear 37 carved in the driving force transmission rod 25, and the rotation direction is converted by 90 degrees.
With respect to the AA cross section, the rotational force of the driving force transmission planetary gear 26 is transmitted to the cutting blade 17 via a tooth profile carved on the cutting edge of the cutting blade 17.

The embodiment shown in FIG. 5 is a cross-sectional view of the tip cutting part, in which the tip of the outer shell working cylinder 9 is shaped so as to wrap the cutting blade 17 with the outer shell working cylinder outer rod 33 and the outer shell working cylinder inner rod 31. The blade is clamped by the blade support rod 20, penetrated by the cutting blade rotating shaft 19, smoothed by the cutting blade bearing 21 and kept at a distance by the cutting blade support spacer 22, and the cutting blade clamping bolt by the upper and lower cutting blade protection rods 23. 24 is fixed so that it can be attached and detached.

The embodiment shown in FIG. 6 is a side view of the tip cutting part, and the driving force is transmitted to the driving force transmission planetary gear 26 by the driving force transmission rod 25 having a high pressure water pipe 35 at the center and a transmission rod tip gear 37 at the tip. In order to protect these series of cutting mechanisms, a cutting blade support plate fixing spacer 49 is bitten and fixed to the cutting blade support plate 20 with a cutting blade support plate mounting bolt 46.
Further, a lump cutting device is provided between the cutting blade support plate fixing spacer 49 and the outer shell work cylinder belly plate 38, and the wire saw is driven by two wire saw drive motors 39, and the fixed pulley 42 and the movable pulley 41 are provided. A winding device with a comb-shaped part that can be expanded and contracted, with the main body wire saw held between them, is provided in the main structure, and is placed in the wire saw loosening guide rail 44 to control this behavior. ing.
The wire for winding is extended from the end of the comb-like part and connected to a wire saw loosening motor 43 having a spring switch that can be turned ON / OFF when a certain tension is exceeded, and the space between the comb-like parts is widened to an extra wire saw. Storing.
Once you have finished cutting, remove the clod and re-install the wire saw.

The embodiment shown in FIG. 7 is a cross-sectional view of the work cylinder drive machine room, and the work cylinder machine room housing 54 is connected to the housing by a housing stiffening stiffener 55 for integration with the outer shell work tube 9 in order to increase rigidity. .
A drive motor 50 for generating cutting mobility is installed at the four corners, and between the adjacent frame stiffener stiffeners 55 on the side in contact with the left and right gantry columns, via a detachable hydraulic jack mounting bolt 59, A work cylinder hydraulic jack 60 for propulsion (or retreat) is installed.
As the reaction force member of the hydraulic jack 60, the H-shaped steel struts 7 are connected by a set of three reaction force transmission stiffeners 56 to increase the rigidity, and the head of the hydraulic jack is attached via a hydraulic jack mounting bolt 59 that can be attached and detached between them. Attach (or end) and resist a large reaction force on the whole frame.
In addition, a work cylinder steel slab girder 58 is connected to the beam girder on each floor to support the load of the work cylinder, and a work cylinder guide receiving rail 57 having a moving bearing 34 for moving the work cylinder is provided for smooth movement. I am trying.

The working example shown in FIG. 8 is a cross-sectional view of a work cylinder closing door, which can be opened and closed at the rearmost end of the work cylinder machine chamber housing 54 via a closing door mounting bracket 61 and can be closed with a closing door handle 85. In addition, a mud collection tank 66 having a mud pump 65 is provided for supplying high pressure water to the high pressure water pipe 35 accommodated in the outer shell work cylinder 9 and collecting sludge from the mud collection tank. It is discharged from the total mud pipe 63 to the drainage groove 4.
9 is a cross-sectional view taken along the line DD of the work cylinder closing door, and is provided with a mud drainage attachment head 68 and a high-pressure water attachment head 69 connected to a flexible hose so that it can be adapted to breakage of the connection accompanying opening and closing of the door. The outer shell work cylinder 9 is connected.
Electric power from outside, high-pressure water supply, and signal lines to computers are also supplied from this door.

The embodiment of FIG. 10 is a three-dimensional view of a work cylinder closing door.

The embodiment of FIG. 11 is a three-dimensional view of a work cylinder.
A work cylinder machine room housing 54 is provided at the end of the work cylinder, and the power of the drive motor 50 is transmitted to the drive force transmission rod 25 via the drive force transmission gear 51 and the transmission rod rear gear 52.
Further, a set of three frame stiffeners 55 and the reaction force transmission stiffener 56 are connected by a hydraulic jack 60 via a hydraulic jack mounting bolt 59.
A work cylinder is supported by a work cylinder support annular receiving frame 70 at the boundary between the operation work section and the cutting work section, and is isolated from a natural ground by a work cylinder isolation wall 71, and the cutting blade 17 at the tip is supported by a regular octagonal rotary cutting blade. It is supported by the plate 20.

The embodiment of FIG. 12 is an overall schematic diagram of the work cylinder advanced retreat full-section excavation method.

The embodiment of FIG. 13 is a work process diagram of the work cylinder advanced retreat full-section excavation method.

The embodiment of FIG. 14 is a three-dimensional view of a versatile work hole.
Since the structure is weakened by continuous drilling, a multipurpose work hole support plate 87 is attached, and holes are drilled in this and closed from the inside with a screw-shaped multipurpose work hole lid 86.

15 is a three-dimensional view of the work cylinder structure. An inner shell working cylinder connecting ring 90 is arranged at the end of the inner shell working cylinder, and the inner cylinder working cylinder belly plate 29 is axially disposed in the hollow cylinder, and the working cylinder circle is formed in a circumferential direction perpendicular to this. In order to divide and assemble the peripheral plate 38 into two leaves at the dividing line 92, the disassembly / assembly joint rod 96 is fitted between the work tube peripheral plate 38 and connected by a fixing bolt 97.
Further, an outer shell working cylinder coupling ring 93 is provided at the end of the outer shell working cylinder, and a coupling cup 94 is disposed and tightened for coupling the driving force transmission rod 25 and the sludge pipe. A ring tightening hole 95 is provided.

In the case of rocks where the tunnel ground is useful, it has a certain cut-out size, so it can increase the added value as a material.

The moving center that is the subject of the present invention is a two-story solid steel structure mount, and the work cylinder inserted into the natural ground can be designed firmly and functionally, improving the safety of underground work Besides, automation of work by mechanization is promoted, and tunnel construction cost can be reduced.

It is a standard cross section of a tunnel. FIG. It is a rock bolt construction conceptual diagram. It is work cylinder sectional drawing. It is a front-end | tip cutting part longitudinal cross-sectional view. It is a front end cutting part side view. It is a work cylinder drive machine room cross section. It is sectional drawing of a work cylinder closing door. It is work cylinder closing door DD sectional drawing. It is a three-dimensional view of a work cylinder closing door. FIG. It is a work cylinder advanced retreating whole section excavation method whole outline figure. It is a work cylinder advanced retreat full section excavation method schematic diagram. . FIG. FIG.

Explanation of symbols

0 Building limit line 1 Sidewalk
2 shoulder
3 Roadway
4 Drainage channel
5 Skin plate
6 Centar Arch Rib
7 H-shaped steel column
8 Upper floor slab beam girder
9 Outer shell cylinder
10 Inner shell cylinder
11 Drive motor storage
12 Lower floor slab beam 13 Base pedestal 14 Rock bolt 15 Lock bolt installation line 16 Lock bolt driving position 17 Cutting blade 18 Upper cutting blade protection rod 19 Cutting blade rotating shaft 20 Cutting blade support rod 21 Cutting blade bearing
DESCRIPTION OF SYMBOLS 22 Cutting blade support spacer 23 Lower cutting blade protection rod 24 Cutting blade clamping bolt 25 Driving force transmission rod 26 Driving force transmission planetary gear 27 Planetary gear rotating shaft 28 Inner shell working cylinder inner rod 29 Inner shell working cylinder stomach rod 30 Inner shell Work tube outer rod 31 Outer shell work tube inner rod 32 Outer shell work tube inner rod 33 Outer shell work tube outer rod 34 Moving bearing
35 High pressure water pipe
36 Drainage pipe 37 Transmission rod tip gear
38 outer shell work cylinder circumferential belly 39 wire saw drive motor 40 wire saw feeding / retracting port 41 moving pulley 42 fixed pulley 43 wire saw loosening motor 44 wire saw loosening guide rail 45 wire saw loosening device 46 cutting blade support plate mounting bolt 47 wire saw Storage portion 48 Wire saw shear pin 49 Cutting blade support rod fixing spacer 50 Drive motor 51 Drive force transmission gear 52 Transmission rod rear gear 53 Drive motor rotating shaft 54 Work cylinder machine room housing 55 Housing stiffening stiffener 56 Reaction force transmission stiffener 57 Work Cylinder guide receiving rail 58 Work cylinder steel floor girder 59 Hydraulic jack mounting bolt 60 Hydraulic jack (promotion / retraction)
61 Closing door mounting bracket 62 Closing door casing 63 Total mud pipe 64 High pressure water supply pipe
65 Mud pump
66 Mud collection tank 67 Mud collection pipe 68 Mud collection pipe mounting head 69 High-pressure water pipe mounting head 70 Work tube support annular receiving frame 71 Work tube isolation wall 72 H-type steel support 73 Feather stop anchor 74 Feather stop lock bolt 75 Mirror surface 76 Rock bolt driving machine 77 Cross-section shaping excavator
78 Backhoe
79 Heavy lifting equipment
80 Upper floor
81 Belt conveyor
82 Sediment transporter
83 Work tube carrier 84 Service line rail 85 Closing door handle
86 Multipurpose work hole lid
87 Multipurpose work hole lid support rod 88 Set screw 89 Clay concrete
90 Inner shell cylinder connection ring
91 Inner shell work cylinder connection bolt hole
92 dividing line
93 Outer shell connection ring
94 Coupling coupling
95 Connection coupling tightening hole
96 Disassembly / Assembly Joint Rod
97 Fixing bolt

Claims (5)

A double-structured work cylinder that has a driving force transmission rod inside the outer shell work cylinder, drives the tip excavation section via this rod, and can hold the excavated soil mass in the inner shell work cylinder An outer shell working cylinder having a cutting portion having a cutting blade that can divide the entire circumference of the tip of the outer shell working cylinder into even regular polygons and independently rotate along the sides thereof. An outer shell working cylinder having an earth lump cutting device provided with a facing comb-shaped wire saw loosening device for cutting an earth lump with a wire saw immediately after a cutting portion. An outer shell cylinder having a screw-like multipurpose work hole in the outer shell cylinder. A tunnel working cylinder advanced full-section receding excavation method by a drilling device provided with a working cylinder having claims 1, 2, 3 and 4.

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