JP3036693B2 - Lining equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a lining apparatus for performing tunnel lining work.

[0002]

2. Description of the Related Art In a tunnel lining operation, a frame is constructed inside an excavated ground, and a plurality of messels (backboards) are arranged around the outer periphery of the frame. By laying concrete for each predetermined stroke, a lining body is constructed for each stroke.

[0003]

By the way, in the construction work of such a lining body, in order to shift to the next stroke, the concrete poured in the previous stroke must be completely solidified and stand alone. have to wait. For this reason, the lining work is delayed by this solidification time.
In addition, as the lining work progresses, it takes time and effort to reconstruct a frame at a place where the lining work is performed.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a lining apparatus capable of performing a tunnel lining operation quickly and efficiently.

[0005]

According to a first aspect of the present invention, there is provided a lining apparatus for constructing a lining body on an inner peripheral surface of a tunnel, comprising: a frame constructed along the inner periphery of the tunnel; A plurality of messels attached so as to be relatively movable in the direction in which the messels and the ground are piled, and a lining is constructed by casting a filler in a gap between the messels and the ground to form a lining body; And a propulsion jack provided for each messel between the frame and the relative movement of the messel from the frame in the traveling direction of the lining work by expansion and contraction, and fitted and driven from the front end side into the gap between the messel and the ground. A pressing member for pressing the filled filler from the front end side.

In a second aspect of the present invention, a sufficient coefficient of friction is provided between each messel and the lining body, and a friction coefficient between each messel and the frame is set between the messel and the lining body. Coefficient of friction between them.

In a third aspect, the pressing member is rotatably attached to a front end of the messel, and a moving means for inverting the pressing member and fitting a pressing surface into a gap between the messel and the ground is provided. The filling material is pressed by a pressing member by pulling each messel toward the frame side by operating the propulsion jack.

According to a fourth aspect of the present invention, the pressing member is provided at a front end of the frame, and includes a pressing portion which goes around the gap between the messel and the ground. The pressed-in filler is pressed by the pressing portion by being drawn into, and the pressing portion is movable to the inner peripheral side of the frame.

According to a fifth aspect of the present invention, the pressing portion is provided with irregularities in the radial direction such that an engaging portion is formed at an end of the covering formed by the pressing portion so as to engage with an adjacent covering. Have.

A sixth aspect of the present invention is provided with a nagel device for fixing the frame to a predetermined location on the ground.

In a seventh aspect, the fixing device includes a plurality of claws driven into the bottom of the ground, and a jack for pushing the claws toward the bottom of the ground.

According to an eighth aspect of the present invention, the frame comprises an upright frame standing upright from a tunnel bottom, and a curved frame connected above the upright frame and curved along the inner peripheral surface of the tunnel. The frame was connected via a contractible connection.

[0013]

According to the first and second aspects of the present invention, the frame is arranged at a predetermined position in the tunnel where the excavation work has been performed, and the filler for a predetermined stroke is filled in the gap between the messel and the ground. It is cast. Then, when the one-stroke casting operation is completed, the pressing member is addressed to the end of the injected filler material, and each propulsion jack is operated to draw each messel into the frame side. , And presses the poured filler. The filler pressed in this way solidifies in a short period of time, allowing it to be self-supporting early,
The lining work can be shifted to the next stroke at an early stage, and the lining work can be rapidly advanced.

Further, in order to advance the overturning operation to the next stroke, it is necessary to advance the frame. To this end, first, a plurality of propulsion jacks are sequentially operated one by one. Then, the messels with the corresponding propulsion jacks move in the direction of the lining work against the frame that is immovable with respect to the tunnel due to the frictional force between the mess and the messels where the corresponding propulsion jacks are not working. So that all messels can be advanced from the frame by one stroke of the lining operation. When all the messels have moved forward in this way, then all the propulsion jacks are simultaneously contracted, and the frame with small friction between the messel and the messel is fixed to the lining by the frictional force. As a result, the entire lining device including the frame is advanced by one stroke of the lining operation. In this way, the lining device (frame) moves forward by itself with the progress of the lining work,
There is no need to rebuild the frame each time, and the efficiency of the lining work is increased.

In the third invention, the pressing member provided for each messel is pressed against the filler side together with each messel by the operation of the propulsion jack. Therefore, the pressing force and the pressing stroke for each propulsion jack are reduced. The pressure on the filler can be changed appropriately according to the position on the inner periphery of the tunnel. Further, since the pressing member is inverted by the moving means and can be moved from the end of the gap between the messel and the ground, a bag for placing a filler is placed in the gap between the messel and the ground, When the working device is advanced, the pressing member does not interfere.

In the fourth aspect, the pressing member is pressed against the filler together with the frame by the operation of the propulsion jack, and the filler is pressed. Further, since the pressing portion of the pressing member is movable from the gap side between the messel and the ground to the inner circumferential side of the frame, a bag for filling material is placed in the gap between the messel and the ground. When the lining device is advanced, the pressing member does not interfere.

In the fifth aspect, since the engaging portion is formed at the end of the lining body pressed by the pressing portion, the lining body constructed by the next stroke is fitted with the engaging portion by the engaging portion. This can reinforce the connection between adjacent lining bodies.

In the sixth and seventh inventions, when each messel is moved with respect to the fixed frame, the frame can be securely fixed at a predetermined position in the tunnel by the Nagel device. , Or the pressing operation of the filler can be stably performed.

In the eighth aspect, by contracting the connecting portion, the size of the frame can be reduced to one size, and the contact between the messel on the outer periphery of the frame and the lining can be cut off. Thereby, for example, when the lining device is retracted in the direction opposite to the direction of the lining operation, the frictional force acting between the lining device and the lining body is reduced, and the lining device can be easily moved. it can.

[0020]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 and 2 show the overall structure of a lining device 1 according to the present invention.

As shown in the figure, the lining device 1 includes a frame 3 composed of a frame constructed at a predetermined interval from the inner peripheral surface of the ground 2 of the tunnel. Back plate) 4. Then, concrete as a filler is cast between the messel 4 and the ground 2 to construct the lining 5.

The lining body 5 is constructed at predetermined lengths in the direction in which the tunnel extends (left direction in FIG. 1), and is sequentially connected in the tunnel excavation direction. In this case, each lining body 5
Concrete is poured into a bag 6 provided in the gap between the messel 4 and the ground 2 over the entire inner periphery of the ground 2 through a pipe (not shown), thereby being constructed in a bag-filled state.

As the bags 6, those having water permeability and sufficiently large tensile strength are used. Thereby, when concrete is poured and filled in the bag 6,
The bag 6 is brought into close contact with the ground 2 so that the concrete can be kept within a predetermined range, and the casting pressure is maintained at a high level.
The water contained in the concrete can be oozed out of the bag 6. As a result, the density of the concrete in the bag 6 is increased, and the concrete strength can be secured.

Each messel 4 is composed of a messel main body 4A, which is a steel plate, and a support 4B that supports the messel main body 4A from the inner peripheral side. These messel bodies 4A
Is provided closely adjacent to the messel main body 4A adjacent to the entire outer periphery of the frame 3 so as to form the inner peripheral surface of the lining 5. Also, a large number of small holes 7 are provided in the messel body 4A (see FIG. 3), and through these small holes 7,
The water that has oozed out of the bag 6 can be released.

The frame 3 is provided with the same number of propulsion jacks 15 as the messels 4. These propulsion jacks 15
Is fixed to the lower end of the support 4B of each messel 4 and the other end 15B is fixed to the frame of the frame 3, and is disposed in parallel with each messel main body 4A.

As shown in FIG. 4, on the outer periphery of the frame 3, the propulsion jacks 1 corresponding to the propulsion jacks 15 are provided.
5, a pair of rails 12 extending in the direction of expansion and contraction (the direction perpendicular to the plane of FIG. 4) are provided.
A slide portion 13 provided on the support portion 4B of the messel 4 is fitted between the two. As a result, Messel 4
Is supported on the outer periphery of the frame 3 and
The propulsion jack 15 can move in the direction of expansion and contraction. That is, when the propulsion jack 15 is extended, each messel 4 moves relatively to the frame 3 in the tunnel excavation direction (left direction in FIG. 1).

With this configuration, for example, if only the propulsion jack 15 of one messel 4 is extended, the frictional force between this one messel 4 (messel body 4A) and the lining body 5 is reduced by another. Is much smaller than the frictional force between all the messels 4 (messel body 4A) and the lining body 5, so the frame 3 is
, While the corresponding propulsion jack 15 extends, the messel 4 advances forward of the frame 3. In this case, the coefficient of friction between each messel 4 and the frame 3 is determined by, for example, laying oil between the slider portion 13 of the support 4B and the rail 12 of the frame 3 and the like. Is set to a value sufficiently smaller than the coefficient of friction between.

When such operations are sequentially performed on all the messels 4, all the messels 4 can be advanced to a predetermined position with respect to the frame 3. In this state,
This time, if all the propulsion jacks 15 are contracted at the same time,
This time, Messel 4 fixed by frictional force with lining body 5
, The frame 3 having a small frictional force with the messel 4 is pulled forward. In this manner, the lining device 1 can move forward in the tunnel by the expansion and contraction of the propulsion jack 15.

In this moving operation, the frame 3
The frame 3 is fixed to the ground 2 by a nagel device 16 fixed to the lower rear end of the frame 3 in order to completely keep the immovability of the frame 3.
Can also be fixed against. The nagel device 16 has a plurality of claws 16B at the tip of a jack 16A.
When the jack 16A is extended, these claws 16B bite into the bottom surface 2A of the ground 2 and are fixed to the ground 2.

Each messel 4 is fitted into the space between the messel body 4A and the ground 2 and presses the front end of the filled concrete in the lining work progressing direction (left direction in FIGS. 1 and 3). As a pressing member, a wife formwork 10 is provided.

As shown in FIG. 3, the end form 10 is provided with a pressing surface (pressing portion) 10A curved in an arc-shaped cross section for pressing concrete, and a bracket 10B extending to the side to form the messel 4. It is rotatably supported by the support 4B. The end form 10 is rotated by the expansion and contraction of a jack 11 whose both ends are rotatably attached to the end of the bracket 10B and the messel 4. That is, when the jack 11 extends, the end form 10 is turned around the bracket 10B, and the pressing surface 10A is rotated in a direction to fit into the space between the messel main body 4A and the ground 2, and is driven. To the concrete edge.

When the frame 3 is fixed by the nagel apparatus 16 and the propulsion jacks 15 are contracted in a state where the end form 10 is directed to the concrete end, each messel 4 is moved to the frame 3. Retracted slightly backwards,
The wife formwork 10 at the tip of each messel 4 presses the end of the cast concrete. The concrete pressed in this manner is covered with each lining 5 (a lining for one stroke of construction).
Pressurized uniformly throughout. As a result, the time until the concrete solidifies (the time until the concrete becomes independent) can be reduced, and the process can be shifted to the next step at an early stage.

Further, since the pressing surface 10A of the end mold 10 has an arc shape, the end of the lining body 5 is finished in an arc cross section. As a result, the adjacent linings 5 are fitted to each other at the ends of the arc-shaped cross section, and even if insulated by the bag 6, the connection between the linings 5 is in a reinforced state. Become.

The shape of the pressing surface 10A of the wife formwork 10 is not limited to an arc-shaped one as in the present embodiment, but may be formed at the end of the lining body 5 formed by the pressing surface 10A. Any shape may be used as long as the shape is such that an engaging portion that meshes with the adjacent lining bodies 5 is formed, that is, a shape having some unevenness in the radial direction of the pressing surface 10A.

Next, the operation will be described.

When the tunnel lining operation is performed, first, the frame 3 of the lining device 1 is arranged at a predetermined position in the tunnel where the excavation operation has been performed, and is set between the messel body 4A and the ground 2. Concrete is poured into the bag 6.

When the operation of placing the concrete into the bag 6 is completed, the jack 11 is extended, and the concrete filled and poured is placed at the end in the direction of the lining operation.
The concrete poured in by the end form 10 is pressed by shrinking the propulsion jack 15 to 0.
By this pressing operation, the solidification of the poured and filled concrete is accelerated, and the lining body 5 is in a state of being able to stand alone at an early stage. In this pressing, if the pressing force and the pressing stroke are changed for each propulsion jack 15,
The pressing on the concrete can be appropriately controlled according to the position on the inner periphery of the ground 2.

When the lining body 5 is self-supporting to some extent (at least at the vicinity of the end on the side of the wife formwork 10),
The lining device 1 is advanced by one stroke of the lining operation (the length of one lining body 5) in the lining operation progressing direction.

More specifically, the messels 4 are moved forward one by one with respect to the frame 3 fixed to the ground 2 by sequentially extending the plurality of propulsion jacks 15 one by one. At this time, the amount of movement of each messel 4 is adjusted so that the positions of the messels 4 along the tunnel are aligned. In this case, the fixing of the frame 3 may be ensured by the nagel device 16.

Thereafter, when all the propulsion jacks 15 are simultaneously contracted, the plurality of messels 4 do not move with respect to the ground 2 due to the frictional force with the lining body 5.
Since the frictional force between Messel 4 and frame 3 is small,
The frame 3 is retracted to the position where the messel 4 has advanced. In this case, the fixing of the frame 3 by the nagel device 16 is naturally released.

In this way, the lining device 1 performs the lining operation 1
After moving forward by the stroke, concrete placement and pressing are performed again, and the lining 5 is sequentially constructed. Then, the lining body 5 that has solidified until it is completely self-supporting without the support of the messel 4 sequentially passes through the back of the lining device 1.

As described above, according to the present invention, the wife form 10
The pressed concrete is pressed, so that the solidification of the concrete is accelerated, and the lining work can be quickly shifted to the next stroke.

Further, since the frame advances as the lining work progresses, it is not necessary to reconstruct the frame each time, and the efficiency of the lining work is improved.

FIGS. 5 to 7 show another embodiment of the present invention.

As shown in the figure, the lining device 20 of this embodiment is different from the lining device 1 shown in FIGS. The configuration is substantially the same.

That is, a frame 21 comprising a frame is provided along the inner periphery of the ground 2 of the tunnel.
1 and a messel body 22 of the messel 22 arranged on the outer periphery
Concrete is poured between A and the ground 2. The concrete is poured into the water-permeable bag at every predetermined stroke, and the water that has oozed out of the bag is released from a large number of small holes formed in the messel body 22A.

As shown in FIG. 7, both ends of the propulsion jack 23 are connected to the support portion 22B of each messel 22 and the frame of the frame 21, respectively. Thereby, similarly to the above-described embodiment, when each propulsion jack 23 is extended one by one, the corresponding messel 22 is extended.
Moves relative to the frame 21 fixed to the ground 2 together with the other messels 22 in the traveling direction of the lining work (to the left in FIG. 5). After all the messels 22 are sequentially moved forward in this way, if all jacks are simultaneously contracted, the frame 21 is retracted to the position of the messels 22 that have moved forward, and the lining device 20 is moved. Moves forward in the direction of the lining work. Each messel 22
During the movement, the frame 21 may be fixed to the ground 2 by the Nagel device 24.

On the other hand, as a feature of the present embodiment, a pressing member 25 for pressing the poured concrete is provided.
Is fixed to a fixing portion 21D at the end of the frame 21 on the side of the lining work progress direction, and the pressing portion 25A is wrapped around the gap between the messel body 22A and the ground 2. In this case, the pressing member 25 is connected to the elongated hole 2 formed in the fixing portion 21D.
6 is detachably fixed via bolts 27. Thereby, the bolt 27 is loosened, and the pressing member 25 is
Can be drawn into the inner peripheral side of the frame 21 along
When the bag is placed on the outer periphery of the messel 22 or when the lining device 20 moves forward, the pressing member 25 does not interfere. The pressing member 25 is connected to the fixing portion 21D by a chain 28, and is prevented from falling.

In order to perform the pressing operation by the pressing member 25, all the propulsion jacks 23 are extended at the same time, and the frame 21 is moved in the direction of the lining operation with respect to the messel 22 fixed to the ground 2. Relative movement in the opposite direction. Thereby, the pressing portion 25A is connected to the messel body 22A and the ground 2
And presses the cast concrete.

Further, in the present embodiment, the frame 21
Is composed of an upright frame 21A that stands substantially vertically below, and a curved frame 21B that is curved along the inner periphery of the ground 2 connected to the upright frame 21A. The series frame 21A and the curved frame 21B are formed as follows. , Connecting part 21
It is bolted at C. The connecting portion 21C can be contracted by loosening the bolt, so that the curved frame 21B can be lowered and the messel 22 on the outer periphery of the curved frame 21B can be separated from the lining. Further, the upright frame 21A is also provided with a pair of jacks 29.
If it is made to draw toward each other, the upright frame 21
The messel 22 on the outer periphery of A is also separated from the lining. In this way, if the size of the lining device 20 is slightly reduced to separate the messel 22 on the outer periphery of the upright frame 21A and the curved frame 21A from the lining body, for example, the lining device 20 can be moved in the direction of the lining operation. When retracting in the opposite direction, the frictional force acting between the lining device 20 and the lining body is weakened, and the lining device 20 can be easily moved.

As described above, also in the embodiment shown in FIGS. 5 to 7, since the poured concrete is pressed, the solidification of the concrete is accelerated, and the lining work is rapidly performed to the next stroke. Since the frame moves forward with the progress of the lining work, there is no need to rebuild the frame each time, and the efficiency of the lining work is improved.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view of the same seen from the front.

FIG. 3 is a detailed view of a portion B in FIG. 1 showing the vicinity of a wife formwork and a jack.

FIG. 4 is also a diagram showing a connection portion between a messel and a frame.
It is AA sectional drawing of.

FIG. 5 is a cross-sectional view showing another embodiment of the present invention.

FIG. 6 is a front view of the left half, and CC of FIG. 5 is the right half.
It is sectional drawing.

7 is a sectional view taken along the line DD of FIG. 6;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 lining device 2 ground 3 frame 4 messel 5 lining body 6 bag 7 small hole 10 wife form 11 jack 15 propulsion jack 16 nagel device 20 lining device 21 frame 22 messel 23 propulsion jack 24 nagel device 25 pressing member

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kaiji Yanagihara 2-1-1, Shibadaimon, Minato-ku, Tokyo Fuji Building Nippon Mining Machinery Co., Ltd. (72) Inventor Takahisa Ida 31 Ichibancho, Chiyoda-ku, Tokyo Address: Zenitaka Gumi Tokyo Main Office (72) Inventor Iwa ▲ Saki ▼ Norio 31 Ichibancho, Chiyoda-ku, Tokyo Zenithaka Gumi Tokyo Main Office (72) Inventor: Masashi Kaneko 13-4 Arakicho, Shinjuku-ku, Tokyo Sumitomo (72) Inventor Nobuyuki Takamatsu 1-16-14 Shibuya, Shibuya-ku, Tokyo Tokyu Construction Co., Ltd. (56) References JP-A-7-229395 (JP, A) JP-A-2-183090 (JP, A) JP-A-8-326489 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E21D 9/06 321 E21D 11/00 E21D 11/10

Claims (8)

(57) [Claims] 1. A lining device for constructing a lining body on an inner peripheral surface of a tunnel, comprising: a frame constructed along the inner periphery of the tunnel; A plurality of messels are provided, and a lining body is constructed by placing a filler in a gap between these messels and the ground by bagging, and provided for each messel between the messel and the frame. A propulsion jack that relatively moves each messel from the frame in the traveling direction of the lining work by an expansion and contraction operation, and presses the filling material that has been fitted and poured into the gap between the messel and the ground from the front end side from the front end side. A lining device comprising a pressing member. 2. A friction coefficient between each messel and the lining body, wherein a sufficient friction coefficient is provided between each messel and the lining body. The lining device according to claim 1, wherein the lining device is smaller. 3. The propulsion device according to claim 1, wherein the pressing member is rotatably attached to a front end of the messel, and the pressing member includes a moving unit for inverting the pressing member to fit a pressing surface into a gap between the messel and the ground. 3. The stuffed material is pressed by a pressing member by pulling each messel toward the frame by actuation of a jack.
4. The lining device according to claim 1. 4. The pressing member is provided at a front end portion of the frame, and has a pressing portion which goes around a gap between the messel and the ground, and pulls the frame toward the messel by operating the propulsion jack. 2. The pressed filler is pressed by the pressing portion, and the pressing portion is movable to an inner peripheral side of the frame. 3.
Or the lining device according to claim 2. 5. The pressing portion is provided with irregularities in a radial direction so that an engaging portion that meshes with an adjacent lining body is formed at an end of the lining body formed by the pressing portion. The lining device according to claim 3 or 4, wherein: 6. The lining device according to claim 1, further comprising a nagel device for fixing the frame to a predetermined location on the ground. 7. The lining device according to claim 6, wherein the fixing device includes a plurality of claws driven into the bottom of the ground, and a jack for pushing the claws toward the bottom of the ground. . 8. The frame comprises an upright frame standing upright from the bottom of the tunnel, and a curved frame connected above the upright frame and curved along the inner circumferential surface of the tunnel, and contracts the upright frame and the curved frame. The lining device according to any one of claims 1 to 7, wherein the lining device is connected via a possible connecting portion.