JPS58222297A - Road reinforcing method and apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a construction method for reinforcing roads, railways, or waterways, and an apparatus for carrying out the construction method.

Conventionally, this type of tunnel reinforcement has been carried out by manually excavating the concrete wall of the tunnel, and then constructing supports such as steel arches or spraying concrete as necessary. .

However, the work mentioned above relied mostly on manual labor, so construction took time and work efficiency was poor, especially on commercial railway lines, where the work had to be completed within a limited amount of time. Not only was it desired to improve work efficiency, but there were also problems such as walls loosening and collapsing during excavation work on old ditches, and workers being constantly exposed to danger. Ta.

The present invention has been made in view of the problems of the conventional art as described in -
The objective is not only to mechanize the work to perform it efficiently and safely, but also to be able to freely select the construction site, whether continuous or intermittent, and start construction from an urgent location. The object of the present invention is to provide a new ditch reinforcement method and its device, which have a small number of parts and can be made compact as a whole.

Embodiments of the present invention will be described below with reference to the drawings. In Figures 1 to 3, reference numeral 1 denotes a shelter trolley, and a plurality of wheels 2 are installed on the lower side of the trolley. It is now possible to move in the direction of the road. In addition, in the case of a railway tunnel, the rail may be used instead of the above-mentioned rail 3.

Also, for example, the guide wheels may be placed horizontally on both sides of the trolley 1,
By attaching it to i and guiding it in contact with the lower side of the wall, it is possible to smoothly move the cart 1 in the direction of the passageway 3- without using the rails 3.

Seven arch-shaped frames 4 are fixed to the truck Lh, and a plurality of jacks 5 are arranged around the outer periphery of the frames 4. The gloss 5 is oriented in a radial direction toward the wall of the tunnel, and has a divided shelter piece 6 at its tip.
A is taken (=I is placed on the wall), and the entire shelter (3) is shaped along the wall surface.In addition, an earth pressure gauge 7 is placed in the shelter 6, which supports the wall surface. It is possible to detect the wall pressure when

Reference numeral 8 denotes an intermediate truck, and wheels 9 attached to the lower side of the intermediate truck are movable along the rails 3.

Reference numeral 10 denotes a truck for an excavator, which has a plurality of wheels 11 attached to its lower side, and is installed on a rail 12 laid on a platform. Since the rail 12 is continuous on the same line as the rail 13 laid on the shelter truck 1-, the excavator truck 10 is moved from the support truck 8 onto the shelter truck 1. be able to.

4- An excavator main body 14 is installed on the rigging Nli 10, and its arm 14a can be freely rotated and expanded/contracted, and a cutter 1 with a diameter of τ1 is attached to the tip.
41) can be excavated continuously along the wall shape of the path. Reference numeral 15 denotes a jack for moving the excavator 14 in the vertical direction (in the direction of the roadway) on the trolley 10''.

Since the path reinforcement device of this embodiment is constructed as described above, when reinforcing the path, first the jack 5 is
The shelter trolley 1 is moved into the path along the rail 3 while maintaining the distance from the wall so as not to become an obstacle to movement to the construction site. Stop near the position to be reinforced.

Next, the jacks 5 are extended to bring each shelter piece 6a into contact with the wall surface adjacent to the wall to be excavated to prevent the wall from collapsing, and then the jacks 15 are activated to cut in the direction of the tunnel. While adjusting the position of arm 14b,
The wall surface is excavated using the cutter 141] while rotating and extending the cutter 4a.

=5- Note that the shelter truck 1 is configured separately from the intermediate truck 8 on which the truck 10 of the excavator main body 111 is mounted, so that the reaction force and vibration of the excavation force by the cutter 14I are transmitted to the shelter. There is no risk of it being transmitted to the trolley 1. Also, shelter
The work can be carried out more safely if excavation is carried out while measuring the pressure on the wall surface using an earth pressure gauge 7 attached to the outer surface of the earth pressure gauge 7. If more carts 1 are arranged in series, the cart 10 can be moved from the intermediate cart 8 to the cart 1 for the next excavation work.

When the excavation is completed, concrete spraying 16 is carried out immediately as shown in Figure 4 (A), or as shown in Figure 4 (B).
As shown in the figure, the mortar is poured after reinforcing with a support 17 made of steel arches such as H-shaped steel.

5 and 6 show another embodiment of the device of the present invention,
The shelter pieces 6a advance into the excavated portion and cover the excavated wall surface portions one after another while following the excavation. That is, the propulsion jack 18 is attached to the tip of the jack 5 disposed on the frame 4, and one end of the shelter piece 0-6u is fixed to the tip of the jack 18. Immediately after the excavation is performed by the cutter 141, the propelling jack 1) 3 is activated to advance the shelter pieces to block the wall surface.At the same time, when concrete is blown 16 following the excavation, the shelter pieces 6a are sequentially moved. It is retractable. Incidentally, as is clear from FIG. 6, the adjacent shelter 14' 6 a
If the two are engaged with each other, the
It is possible to have it play the role of an id.

Next, the effects of the present invention will be listed.

(1) Since the excavation machine is used to excavate while covering the surrounding area of the excavated wall with a shelter, the work can be carried out safely and efficiently.

(2) Since the behavior of the wall surface is monitored while it is removed by excavation, dangerous conditions can be detected at all times, making it possible to evacuate inside the shelter or, in the worst case, leave only the shelter behind. You can evacuate outside.
・、・：(3) Since the shelter and the excavator can be moved and installed independently in the direction of the road, the construction site can be freely selected regardless of whether it is continuous or intermittent, and construction can be started from an urgent location. It is possible to start.

(4) The shelter is attached to jacks installed in the arch-shaped frame, so when moving, the jacks can be shortened and the shelter can be moved quickly without hitting the wall, and the excavator can be mounted inside the arch-shaped frame. You can evacuate or pass freely.

(5) Since the divided shelters are made to move forward and backward into the excavated area independently, all areas other than the wall surface being excavated by the canter can be covered with the shelter, making the work extremely safe.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the canal reinforcing device of the present invention, and FIG. 2 is a longitudinal sectional view showing the working condition in the canal.
Fig. 3 is a sectional view taken along line III-III in Fig. 2, Fig. 4 (A, B) is a partial sectional view showing each embodiment of the method for reinforcing the tunnel wall surface, and Fig. 5 is another implementation. A partial cross-sectional view showing an example,
FIG. 6 is a sectional view taken along the line Vl--Vl in FIG. 5. DESCRIPTION OF SYMBOLS 1... Shelter trolley, 2... Wheels, 3... Rail, 8- 4... Frame, 5... Jacket, 6... Shelter 16a... Shelter piece, 7 ...Earth pressure gauge, 8.
... Intermediate truck, 5] ... Wheels, 10 ... Excavation rock platform, 11 ... Wheels, 12 ... Rules, 14 ... Excavator main body, 14a ... Arm, 14b ... ·cutter,
15... Jacking, 16... Concrete spraying,
17...Shoring, 18...Propulsion jack 9- Figure 2 Port 1 Figure 3 (A) CB)

Claims (4)

[Claims] (1) Use the wall adjacent to the part to be excavated as a shelter.
A tunnel reinforcing construction method characterized in that the wall surface is covered with a concrete wall, the wall surface is excavated with an excavator, and the wall surface is reinforced by spraying concrete or the like, or by shoring with steel arches or the like and repairing by injecting mortar. (2) A patented road reinforcement method characterized by excavating while monitoring the behavior of the wall using a monitoring device such as an earth pressure gauge attached to the shelter. (3) A frame is fixed on a trolley that moves in the direction of the ditch and is installed adjacent to the wall portion to be excavated, and a plurality of jacks are arranged on the frame facing the wall, and the tip of each jack is A split shelter is attached to the excavator body, and the excavator main unit is placed on another cart that moves independently from the above-mentioned cart and is installed at the excavation position, and is rotated and expanded/contracted by the excavator main body. A tunnel reinforcing device characterized in that an arm is provided, and a cutter for wall excavation is provided at the tip of the arm. (4) The tunnel reinforcing device according to claim 3, wherein each of the divided shelters independently advances and retreats into the excavated portion.