JP2502259B2 - Tunnel lining equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION This invention relates to a tunnel lining device.

[0002]

2. Description of the Related Art FIGS. 4 to 6 show a conventional tunnel lining apparatus and a lining method carried out by the lining apparatus. The inner circumferential surface of the shield 1 and the outer circumferential surface of the inner formwork 2 are shown in FIG. Between the two, the end frame device 4 which is movably arranged in contact with both sides and to which the driving pipe 3 is attached, and the end frame device 4 is provided with a piston.
A first hydraulic member 7 which is connected by 12 to which oil supply and drain pipes 5 and 6 are attached and which moves the end frame device 4 is connected by the first hydraulic member 7 and an oil supply pipe 8, and a plunger is provided in the middle of the inside.
A pressure oil chamber 23 that accommodates 20 and communicates with the oil supply pipe 8 on one side thereof.
However, it has a gas chamber 24 on the opposite side thereof, and is connected to a second hydraulic member 9 for pressurizing the first hydraulic member 7 at the time of driving, with the gas chamber 24 of the second hydraulic member 9 by an air supply pipe 10. And a first gas supply unit 11 composed of a gas cylinder for supplying a gas for pressurizing the pressure oil in the second hydraulic member 9, and 13, 14 are opening / closing valves provided in the oil supply / discharge pipes 5, 6. , 15 and 16 are refueling pipes 8 respectively
Further, an on-off valve provided in the air supply pipe 10, 17 is cast concrete, 18 is a joint material, and 19 is a ground.

When performing the normal placing process during tunnel lining by the above-mentioned one, as shown in FIG. 4, the placing pipe 3 is used at the reference position 21 at the reference position 21, the shield 1, the inner formwork 2 and the ground. Concrete 17 is to be placed between the oil supply pipes 19 and 19, and at this time, the on-off valves 13 and 14 of the oil supply and drain pipes 5 and 6 of the first hydraulic member 7 are closed, and the oil supply pipe 8 and the first gas supply unit are The opening / closing valves 15 and 16 of the air supply pipe 10 of 11 are opened, pressurized gas is supplied from the first gas supply unit 11 to the gas chamber 24 of the second hydraulic member 9, and the pressure thereof is the pressure oil of the second hydraulic member 9. It is transmitted to the pressure oil in the chamber 23 and is passed through the oil supply pipe 8 to be a normal driving pressure for the end frame device 4
Added to. This normal placing pressure is of a magnitude corresponding to the concrete placing pressure against the earth pressure and water pressure of the ground 19, and by applying such ordinary placing pressure to the gable frame device 4, The frame device 4 is at the reference position 21,
A balance will be maintained by the concrete placing pressure and the holding pressure.

After the casting concrete 6 is hardened, it is necessary to move to the re-casting step.
As shown in FIG. 3, the opening / closing valves 13 and 14 of the oil supply / drain pipes 5 and 6 of the first hydraulic member 7 are opened, and the oil supply pipe 8 and the first gas supply unit are opened.
The on-off valves 15 and 16 of the air supply pipe 10 of 11 are closed to supply pressure oil from the oil supply / exhaust pipe 5 to one side of the piston 12, while discharging the pressure oil of the other side from the oil supply / exhaust pipe 6 to the piston 12 While moving the end frame device 4 connected to this and the end position 22 which is a predetermined distance from the reference position 21, the shield 1 is set by the placing pipe 3.
A connecting joint material 18 is placed between the inner mold 2 and the ground 19, and the shield 1 is not moved during this. Subsequently, as shown in FIG. 6, the opening / closing valves 13, 14 of the oil supply / discharge pipes 5, 6 of the first hydraulic member 7
And the opening / closing valves 15 and 16 of the air supply pipe 10 of the first gas supply unit 11 are opened, and pressurized gas is supplied from the first gas supply unit 11 to the gas chamber 24 of the second hydraulic member 9. The supplied pressure is transmitted to the pressure oil in the pressure oil chamber 23 of the second hydraulic member 9 and is applied to the end frame device 4 as re-implantation pressure via the oil supply pipe 8. Then, the shield 1 is moved to a predetermined position while pouring concrete 17 having a capacity corresponding to the skin plate, and the movable end frame device 4 is stopped at the joint position 22. The re-placing pressure applied to the end frame device 4 during this period is the pressure corresponding to the concrete pouring pressure against the earth pressure and water pressure of the ground 19, and the inner and outer circumferences of the end frame device 4 because the shield 1 moves. It is composed of a combined pressure of the pressure against the sliding resistance between the packing provided on the surface and the shield 1. With this, the re-placing step is completed, and the process shifts to the above-mentioned normal placing step.

[0005]

By the way, as described above, the normal pouring pressure applied to the normal pouring concrete in the normal pouring step of the concrete 6 and the re-pouring applied to the re-pouring concrete in the re-pouring step. The pressure means that there is a difference in the pressure, but since the pressure is applied by the pressure of the pressurized gas supplied by the same first gas supply unit 11, it is not necessary for each step to be performed. The pressure of the pressurized gas supplied must be changed,
The pressure changing work is difficult and takes a long time, and it is not only difficult to reduce the work efficiency but also it is difficult to obtain an accurate pressure, which causes a problem that the quality of the poured concrete is deteriorated.

Therefore, an object of the present invention is to solve the above-mentioned problems of the conventional tunnel lining device and to easily change the pouring pressure applied to the pouring concrete in each pouring step. Another object of the present invention is to provide a tunnel lining apparatus that does not require a long time, does not reduce work efficiency, and can obtain an accurate pouring pressure and does not deteriorate the quality of pouring concrete.

[0007]

In order to achieve the above-mentioned object, the present invention movably arranges between the inner peripheral surface of the shield and the outer peripheral surface of the inner mold by contacting both surfaces. End frame device to which the mounting pipe is attached, a first hydraulic member connected to the end frame device to move the end frame device with an oil supply / exhaust oil pipe attached, and the first hydraulic member and the oil supply pipe And a second hydraulic member for pressurizing the first hydraulic member at the time of driving, and a gas supply pipe for connecting the second hydraulic member with the second hydraulic member to supply gas for pressurizing the pressure oil in the second hydraulic member. In a tunnel lining apparatus having a first gas supply section to be gasified, a second gas supply section is connected to the second hydraulic member.

[0008]

In the present invention as described above, when the concrete is placed between the shield, the inner formwork and the ground at the reference position by the placing pipe in the ordinary placing step, the first hydraulic member is supplied and discharged. The oil supply pipe and the air supply pipe of the second gas supply unit are closed, and the oil supply pipe and the air supply pipe of the first gas supply unit are opened.
Pressurized gas is supplied from the gas supply unit to the second hydraulic member, and the pressure thereof is transmitted to the pressure oil in the second hydraulic member and is applied to the end frame device as a normal driving pressure via the oil supply pipe. This normal pouring pressure is of a magnitude corresponding to the concrete pouring pressure that opposes the earth pressure and water pressure of the natural ground. After this setting concrete is hardened, the process moves to the re-pouring step. When this is done, the oil supply / exhaust pipe of the first hydraulic member is opened, and the oil supply pipe and the first and second gas supply parts are opened. The air supply pipe is closed, pressure oil is supplied from one of the oil supply / exhaust pipes to one of the first hydraulic members, and the pressure oil of the other side is discharged from the other oil supply / exhaust pipe to move the end frame device at a predetermined distance from the reference position. While moving to a certain joint position, a joint pipe is placed between the shield, the inner formwork and the ground by the placing pipe, and subsequently, the oil supply / exhaust pipe of the first hydraulic member and the first gas supply unit The air supply pipe is closed, the oil supply pipe and the air supply pipe of the second gas supply unit are opened, and pressurized gas is supplied from the second gas supply unit to the second hydraulic member, and the pressure thereof is within the second hydraulic member. It is transmitted to the pressure oil, and is applied to the end frame device as re-laminating pressure via the oil supply pipe. Therefore, the shield was moved to the specified position while placing concrete of the capacity for the skin plate, and the gable frame device was stopped at the joint position during this movement, and the re-placement pressure applied to this was Pressure equivalent to concrete pouring pressure against mountain earth pressure and water pressure, and pressure against sliding resistance between packing and shield provided on inner and outer peripheral surfaces of gable frame device to move shield. It is composed of synthetic pressure with.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment of the present invention shown in FIG. 1, the same parts as those of the conventional one are designated by the same reference numerals, and the description thereof will be omitted. Air supply pipe
A second gas supply unit 25 formed of a gas cylinder is connected to the air supply pipe 10 by an air supply pipe 26, and an on-off valve 27 is provided in the air supply pipe 26. The pressures corresponding to the normal placing pressure and the re-placement pressure are set in the first and second gas supply units 11 and 25, respectively.

When lining the tunnel with such a structure, the concrete 17 and the jointing material 18 are to be placed according to the procedure shown in FIGS. 1 to 3, and during the normal placing step, as shown in FIG. As shown in FIG. 3, concrete 17 is placed between the shield 1, the inner formwork 2 and the ground 19 by the placing pipe 3 at the reference position 21, and at this time, the supply and discharge of the first hydraulic member 7 is performed. In addition to closing the opening / closing valves 13 and 14 of the oil pipes 5 and 6 and the opening / closing valve 27 of the air supply pipe 26 of the second gas supply unit 25,
Opening the on-off valves 15 and 16 of the oil supply pipe 8 and the air supply pipe 10, pressurized gas is supplied from the first gas supply unit 11 to the second hydraulic member 9,
The pressure is transmitted to the pressure oil in the second hydraulic member 9 and is applied to the end frame device 4 as a normal driving pressure via the oil supply pipe 8.
This normal placing pressure is of a magnitude corresponding to the concrete placing pressure against the earth pressure and water pressure of the ground 19, and by applying such pressure to the end frame device 4, the end frame device 4 Is balanced at the reference position 21 by the concrete placing pressure and the holding pressure.

After the casting concrete 6 is hardened, it is necessary to move to the re-casting step.
As shown in, the opening / closing valves 13, 14 of the oil supply / drain pipes 5, 6 of the first hydraulic member 7 are opened, and the opening / closing valves 15, 16, 27 of the oil supply pipe 8 and the air supply pipes 10, 26 are closed to supply the oil. The pressure oil is supplied from the oil discharge pipe 5 to one side of the piston 12 of the first hydraulic member 7, while the pressure oil of the other side is discharged from the oil supply / drain pipe 6, and the piston 12 and the end frame device 4 connected to the piston 12 are discharged. While moving from the reference position 21 to the joint position 22 at a predetermined distance, the joint pipe 18 is placed between the shield 1, the inner formwork 2 and the ground 19 by the placing pipe 3, and during this time the shield 1 Never move. Subsequently, as shown in FIG. 3, the opening / closing valves 13 and 14 of the oil supply / drain pipes 5 and 6 of the first hydraulic member 7 and the opening / closing valve 16 of the air supply pipe 10 of the first gas supply unit 11 are closed, and the oil supply pipe 8 and Air supply pipe of the second gas supply unit 25
26 opening / closing valves 15 and 27 are opened, and the second gas supply unit 25
Pressurized gas is supplied to the gas chamber 24 of the hydraulic member 9, the pressure thereof is transmitted to the pressure oil in the pressure oil chamber 23, and is applied to the end frame device 4 as re-casting pressure via the oil supply pipe 8. Therefore, the shield 1 is moved to a predetermined position while placing concrete 17 having a capacity corresponding to the skin plate, and the gable frame device 4 is stopped at the joint position 22 during this movement. Wife frame device 4 during this time
The re-casting pressure applied to the pressure is equivalent to the concrete-casting pressure against the earth pressure and water pressure of the natural ground 19 and the packing provided on the inner and outer peripheral surfaces of the end frame device 4 for the shield 1 to move. And a pressure against the sliding resistance between the shield 1 and the shield 1. With this, the re-placing step is completed, and the process shifts to the above-mentioned normal placing step.

[0012]

The present invention is as described above, and a driving pipe is mounted between the inner peripheral surface of the shield and the outer peripheral surface of the inner mold so as to be movable while contacting both surfaces. A gable frame device, a first hydraulic member that is connected to the gable frame device and has an oil supply / exhaust oil pipe attached to move the gable frame device, and a first hydraulic member that is connected to the first hydraulic member by an oil supply pipe. A second hydraulic member that pressurizes the first hydraulic member, and a first gas supply unit that is connected to the second hydraulic member by an air supply pipe and supplies the gas that pressurizes the pressure oil in the second hydraulic member. Since the second gas supply unit is connected to the second hydraulic member, the pressures corresponding to the normal placing pressure and the re-placement pressure are set in advance in the first gas supplying unit and the second gas supplying unit. By doing so, it is easy to change the pouring pressure applied to the pouring concrete for each pouring process, Without lowering the working efficiency without time-consuming, also it has the effect of never accurate striking 設圧 force reduces the quality of the obtained by pouring concrete obtained.

[Brief description of drawings]

FIG. 1 is a diagrammatic front view of an embodiment of the present invention during a normal placing process.

FIG. 2 is a diagrammatic front view of the first half during a re-mounting process according to the above.

FIG. 3 is a diagrammatic front view of the latter half of the re-mounting process according to the above.

FIG. 4 is a schematic front view similar to FIG. 1 of a conventional tunnel lining device of the same type as the present invention.

FIG. 5 is a diagrammatic front view of the first half during the re-mounting process according to the above.

FIG. 6 is a diagrammatic front view of the latter half during the re-mounting process according to the above.

[Explanation of symbols]

 1 shield 2 inner formwork 3 casting pipe 4 gable frame device 5 oil supply / exhaust pipe 6 oil supply / exhaust pipe 7 first hydraulic member 8 oil supply / exhaust pipe 9 second hydraulic member 10 air supply pipe 11 first gas supply part 12 piston 13 open / close valve 14 Open / close valve 15 Open / close valve 16 Open / close valve 17 Cast concrete 18 Joint material 19 Ground 21 Formwork standard position 22 Joint position 25 Second gas supply section 26 Air supply pipe

Claims (1)

(57) [Claims] 1. A gable frame device in which a casting pipe is attached so as to be movable in contact with both surfaces between an inner peripheral surface of a shield and an outer peripheral surface of an inner formwork, and to this gable frame device. A first hydraulic member connected to the oil supply / exhaust pipe to move the end frame device; and a first hydraulic member connected to the first hydraulic member by an oil supply pipe,
A second hydraulic member that pressurizes the first hydraulic member during driving, and a first gas supply that is connected to the second hydraulic member by an air supply pipe and supplies gas for pressurizing the pressure oil in the second hydraulic member. In a tunnel lining device having a section, a second gas supply unit is connected to the second hydraulic member.