JP2000110489A - Top end deposited muck disposal device for tunnel boring machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for forcibly scraping off muck deposited at the body top end of a TBM and continuously recovering the muck with simple structure. SOLUTION: In a device for forcibly scraping off muck deposited at the body top end of a TBM 1 and recovering the muck, a vertically movable guide plate 2 is installed on the body top end of the TBM 1, and a muck intake 3 with an opening part is installed. Another conveyor 5 connected to a main conveyor 4 of the TBM 1 is further installed from the opening part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a tunnel boring machine (hereinafter, simply referred to as "TBM") forcibly sliding down a pile deposited on a top end of a main body, collecting the inside of the TBM, and transporting the tunnel outside. Device for

[0002]

2. Description of the Related Art A TBM is a tunnel excavation machine that excavates a rock by crushing rocks using a large cutting tool on the entire cross section of the tunnel. The cutting part has the function of mechanically cutting, crushing and removing the rock layer of the tunnel face in the natural state.The rock pieces cut and crushed by the cutting part are transported and unloaded to the rear of the machine by the slip discharge part. Is done. The debris discharge unit has a function of storing the debris generated by the cutting unit cutting and crushing the rock layer and transferring the debris to the debris transport device behind the TBM, and can completely remove the debris generated by the face. Need to be something.

[0003] A uniform rock layer whose geology is relatively hard, the cutting face is self-supporting for a while after cutting,
It is good if it is a good quality rock layer that can be built behind the machine, but if the geology is weak and the face is difficult to stand on its own, the shear that has peeled off from the rock due to cutting will be TBM.
It accumulates on the upper part of the main body shell and falls from the rear tail part with the progress of the TBM, making the support work and the like dangerous.

[0004] In order to prevent such dangerous work and the like, the accumulated debris is dropped on a mine tunnel with a wrench rod or the like, and is manually collected. However, with these conventional methods, it is possible to perform the Keren work itself in the case of a small cross section, but in the case of a large cross section, there is a problem in the amount of work to be collected manually and safety, and post-treatment of accumulated debris is not possible. It was hard.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and has a simple structure for forcibly sliding down a pile deposited on the top end of the main body of the TBM, thereby reducing the slip. It is an object of the present invention to provide an apparatus for continuously recovering the wastewater.

[0006]

An apparatus for forcibly sliding down the debris deposited on the top of the main body of the TBM and collecting the debris, wherein a vertically movable guide plate is provided on the top of the main body of the TBM. And a conveyor for connecting to a main conveyor of the TBM through the opening is provided.
This is a top-end debris treatment device.

[0007]

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

<A> Overall Configuration FIG. 1 is a cross-sectional view of a TBM 1 according to the present invention.
Is a plan view thereof. The TBM 1 is provided with a vertically movable guide plate 2 on the top end of the main body, a slip inlet 3 having an opening, and another conveyor 5 connected to the main conveyor 4 of the TBM 1 from the opening. It has an installed structure.

<B> Guide plate The guide plate 2 is provided at the rear end of the TBM 1 and has a substantially triangular plate shape having a planer shape in the direction of travel of the TBM 1 (arrow in FIG. 2). is there. Guide plate 2 is TBM1
Depending on the dimensions (gap) between the skin plate 6 and the pit wall,
The jack 7 can be moved up and down. TBM
Due to the structure of the guide plate 2, the debris separated from the rock due to the cutting accumulated on the top end of No. 1 generates a flow for recovery along with the excavation of the TBM 1, and is collected at the debris inlet 3 described later. It is.

<C> Slip Inlet The slip inlet 3 has a structure in which an opening is provided on the top end of the main body of the TBM 1 and a funnel-shaped inlet is provided inside the TBM 1. In this embodiment, the slip inlet 3
Are provided at both ends of the guide plate 2. As described above, with the excavation of the TBM 1, a flow for collecting the debris accumulated on the top end occurs, and the debris falls into the debris inlet 3 and is collected.

<D> Conveyor A known TBM is introduced through a slip inlet 3 provided in the opening.
The conveyor 5 is connected to and installed on one main conveyor 4. With this configuration, the collected waste that has fallen into the waste intake port 3 and collected is transferred to the main conveyor 4 of the TBM 1.
Is carried out of the mine.

[0012]

The method of treating the top end of the TBM 1 according to the present invention will be described below.

<A> Excavation of TBM FIG. 3 is a longitudinal sectional view showing a situation in which a pile 7 falling to the top end of the TBM 1 according to the present invention is treated. As the TBM 1 cuts the ground G and moves forward (in the direction of the arrow), the pile 7 that has fallen at the top is sandwiched between the top of the ground G and the top of the TBM 1 and retreats sequentially toward the guide plate 2. Dragged.

<B> Jack operation When the TBM 1 is excavated, the guide plate 2 is formed in accordance with the top end of the TBM 1 and the size (gap) of a pit wall formed by cutting the ground G.
Is operated up and down by the jack 7 so as to set the size (gap) to be optimal for treating the pile 7. By appropriately pressing the guide plate 2 against the pit wall according to the ground condition, the support effect of the ground G can be expected, and it is also useful for preventing the vibration of the TBM 1 and controlling the attitude.

<C> Recovery of accumulated debris The accumulated debris 7 dragged toward the guide plate 2 by the advancement of the TBM 1 is received by the guide plate 2, and from the both ends thereof, along the circular gradient of the TBM 1, the slip inlet 3. Fall naturally. Therefore, the worker W performing the work of the shoring C immediately after the TBM 1 can also safely perform the work without fear of falling rocks.

<D> Removal of sediment waste The collected sediment 7 that has fallen naturally into the waste intake port 3 and has been collected is
It is moved to the main conveyor 4 of the TBM 1 by the conveyor 5 and carried out of the mine. If the conveyor 5 has a sufficient moving gradient, a simple chute may be used instead of the conveyor. Since the unloading of the accumulated debris 7 is performed in a continuous process, the processing of the debris that has fallen becomes unnecessary, so that the cycle time can be reduced and the work efficiency can be improved.

[0017]

Since the present invention has been described above,
The following effects can be obtained. <A> Since the sediment is received by the guide plate and naturally falls from the both ends along the circular slope of the TBM into the slip inlet, there is no slip immediately after the TBM.
Shoring work can be performed safely. <B> For the same reason, it is not necessary to perform the process of dropping the slip, thereby reducing the cycle time and improving the work efficiency. <C> Since the guide plate has a structure capable of moving up and down, the guide plate can be appropriately pressed against the pit wall, and a ground support effect can be expected, and it is also useful for preventing TBM vibration and controlling the posture.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a TBM according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a vertical cross-sectional view showing a state of processing of a pile debris dropped on a top end of a TBM.

Claims (1)

[Claims] 1. A device for forcibly sliding down the debris deposited on the top end of a main body of a tunnel boring machine and collecting the debris, wherein a guide plate movable up and down on the top end of the main body of the tunnel boring machine. Wherein a slip inlet having an opening is installed, and another conveyor connected to the main conveyor of the tunnel boring machine is installed from the opening, wherein a top end pile of the tunnel boring machine is provided. Processing equipment.