JPS58164899A - Facing excavation method and its device - 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 provides a method for excavating a face ground when constructing an underground structure using various tunnel construction methods such as propulsion construction method, towing construction method, self-propelled advance construction method, shield construction method, and semi-shield construction method. and its equipment.

In conventional tunnel construction methods, excavation of the face ground when the ground is self-supporting requires the use of an expensive full-section excavator or manual excavation for diameters of 2,000% or more.
If the diameter is 12,000 IX or less, it is generally excavated manually, which has the disadvantage of increasing construction costs or prolonging the construction period. In addition, in the case of two mechanical excavation methods, various excavators must be prepared depending on the diameter, resulting in an expensive cine economy.

The present invention aims to solve the above-mentioned drawbacks, and provides an excellent method for mechanically excavating small diameter pipes by setting an extremely small diameter elongated shirt truss in a small diameter pipe to effectively utilize a narrow accommodation space. It provides equipment.

That is, a support is provided in the cylinder near the face with a diameter of $1000% or more, and the first arm supported by the support is arranged so that it can be moved back and forth by the jack A, and the first arm is The rear end of the second arm is pivotally connected to the front end, and the front end of the second arm is arranged to rotate left and right by the jack B, and the rear end of the third arm is attached to the front end of the second arm. Arrived at Buho,
The front end of the third arm is arranged so that it can be moved up and down by the jack C, and the excavator bar 1 is pivoted to the front end of the third arm. A face excavation device capable of excavating is used to excavate the face ground, and the position of the excavation packet is changed by moving the first, second, and third arms by operating the jacks A, B, C, and D. The excavation packet can move three-dimensionally in the front-rear, left-right, and up-down directions, allowing it to excavate a face of the required cross-section without any corners, and by increasing the rotation angle of the second and third arms, the position of the excavation packet can change significantly in the up-down, left-right, and left-right directions. , it can be applied to cylindrical bodies with large cross-sections, and by reducing the angle, it can also be applied to cylindrical bodies with small cross-sections, so it has the advantage of a wide range of application. In addition, it has the advantage of being simple in structure, lightweight, and small in size, low in manufacturing cost, and easy to operate since it is operated by a jack. Furthermore, there is also the advantage that the excavated earth and sand can be loaded onto an earth and sand conveyor such as a belt conveyor or a sand conveyor. What's more, one person can operate a single machine to excavate the face and load it onto the belt conveyor and the Zuritoro. Moreover, the excavation can be performed at several times the speed of manual excavation, shortening the construction period and reducing construction costs. The advantage is that it can save you a lot of money.

Hereinafter, one embodiment of the method and apparatus of the present invention will be described.
This will be explained with reference to the drawings.

As shown in the plan view of FIG. 1 and the side view of FIG. When constructing, install supports (3) inside the underground structure (1) near the face.
All fixtures (3υ) are used to fix the first arm (41), and the support (3) supports the rear end of the first arm (4I). 1
The rear end side of the second arm (4) is pivotally connected to the front end side of the arm (4I), and a jack B is provided with one end pivotally connected to the first arm (4I) and the other end to the second arm (42). The front end side of the second arm (42) is arranged so that it can rotate left and right, and the rear end side of the third arm (4) is pivotally connected to the front end side of the second arm (42). Attach the third arm (4t) with a jack C whose other end is pivotally connected to the third arm (4).
4) is arranged so that the front end side can move up and down. Also, the third
The excavation bucket (51'e) is pivotally attached to the front end of the arm (4), and the excavation packet (
A face excavation device configured by rotating the excavation packet (5) is installed near the face ground, and the jacks A, B, and C are operated to drive the excavation packet (5) through the first and second third arms. ) is moved forward and backward, from left to right, and up and down, and the jack is operated to excavate the face. Further, the present invention can also load the excavated earth and sand onto the belt conveyor (6).

As is clear from the above description, the method and device of the present invention is to mechanically excavate the ground of a small diameter pipe by setting an elongated shaft with an extremely small diameter inside a small diameter pipe and effectively utilizing the narrow accommodation space. This is what made it possible to perform the following:
By increasing the vertical and horizontal angles of the packet, it can be applied to underground structures with a large cross section, and by decreasing the angle, it can be applied to underground structures with a small cross section. This has the advantage of being able to excavate the faces of underground structures of various sizes and diameters. In addition, because it is small and has a simple structure, it is economical with low manufacturing costs and is easy to operate, allowing one person to excavate the face and load earth and sand, and improves efficiency by using mechanical excavation. This has the advantage of shortening the construction period and reducing construction costs.

Further, since this device can be disassembled and assembled at each pivot point, there is also an advantage 6- that it is easy to disassemble, assemble, and transport.

The present invention has been described above with reference to one embodiment and the drawings, but of course the present invention is not limited to such an embodiment and can be modified in various ways without departing from the spirit of the present invention. is something

[Brief explanation of drawings]

FIG. 1 is a plan view showing one embodiment of the present invention, and FIG. 2 is a plan view showing one embodiment of the present invention.
FIG. 1 ・・・・・・・・・Underground structure 2・・・・・・・・・Blade mouth 3・・・・・・・・・3 supports ・・・・・・・・・...Fixing tool 41...
.....First arm 4, .....Second arm 4, ....
・・・・・・37th-:・mu5 ・・・・・・・・・・・・
Excavation packet 6 ・・・・・・・・・・・・ Belt conveyor A・・・・・・・・・ Judge A 7- B ・・・・・・・・・・・・ Judge BC・・・・・・
... Jyatsuki C D... Jyatsuki D Patent applicant Atsushi Uemura - (1 other person) 1:11 ~ 8-

Claims (2)

[Claims] (1) In the face and excavation method when constructing an entire underground structure using various tunnel construction methods, the first part is supported at the rear by a support inside an underground cylinder near the face ground, and slides back and forth by a jack A. The rear end of the second arm, which rotates left and right with a jack B, is pivoted to the front end of the arm, and the rear end of the third arm, which moves vertically with a jack C, is pivoted to the front end of the second arm. At the front end of the third arm, there is disposed an excavation device which is pivoted to the excavator and is rotated by a jack D.
Excavation of the face ground is done by operating the jacks A, B, and C'e as appropriate to move the first, second, third, and third arms.
A face excavation method characterized by moving i'e forward and backward, left and right, and up and down, and operating a jack D to excavate the face ground with an excavation packet. (2) Regarding the device for excavating the face when constructing underground structures by various tunneling methods, the first device is supported at the rear by a support inside the cylinder and slides back and forth by the jack A. Arm, the rear end of which is pivoted to the front end of the first arm, and the rear end of the second arm is pivoted to the front end of the second arm, and the rear end is pivoted to the front end of the second arm. A face excavation device comprising: a third arm whose front end moves up and down; an excavation packet pivoted to the front end of the third arm and rotated by a jack D;