Tunnel boring machine slag transfer system and slag transfer method

Abstract

The present invention discloses a tunnel boring machine (TBM) slag transfer system and method. The TBM slag transfer system includes: at least three groups of slag trucks, each including an electric locomotive and a side-dumping slag truck; a multi-way passing platform capable of accommodating at least three groups of slag trucks for smooth passing; a temporary storage bin disposed at the end of the multi-way passing platform; a slag dumper disposed above the temporary storage bin for dumping slag from the side-dumping slag trucks into the temporary storage bin; a slag transfer belt conveyor disposed below the temporary storage bin; and an off-road belt conveyor for transferring slag transferred by the slag transfer belt conveyor to a slag unloading site. Thus, the slag transfer system effectively combines the slag truck group and the belt conveyor system for transferring slag, resulting in a simple structure, efficient transportation, and a wide range of applications.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel slag transfer, and more specifically, to a tunnel slag transfer system for a tunnel boring machine. The present invention also provides a tunnel slag transfer method for the tunnel boring machine slag transfer system. Background Art

[0002] During the construction of a hard rock tunnel boring machine, the excavated soil needs to be transported from the face to the outside of the tunnel. Currently, there are two main ways to remove the excavated soil. One is to use a continuous belt conveyor in conjunction with a main machine belt conveyor and a subsequent supporting belt conveyor to remove the excavated soil. The other is to use a dump truck in conjunction with a main machine belt conveyor and a subsequent supporting belt conveyor to remove the excavated soil.

[0003] The former requires the entire line to be shut down for maintenance when the continuous belt conveyor fails, which is inconvenient to repair and seriously affects construction efficiency. In addition, the continuous belt conveyor has the problem of slag falling, which is not conducive to civilized construction. The latter requires the cooperation of the lifting system to transfer the slag in the dump truck to the transport truck, resulting in low slag discharge efficiency. In addition, the slag truck needs to be equipped with a large slag pit for slag discharge, which has high requirements for the slag unloading site and cannot be implemented in restricted areas.

[0004] In summary, how to provide a slag discharge method with a simple structure, efficient transportation and a wide range of applications is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a tunnel boring machine slag transfer system, which effectively combines the slag truck grouping and belt conveyor transportation system to transfer slag, has a simple structure, efficient transportation, and a wide range of uses.

[0006] In addition, the present invention also provides a slag transfer method for a tunnel boring machine slag transfer system.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A tunnel boring machine slag transfer system, comprising:

[0009] At least three groups of muck trucks, the muck truck groups including electric locomotives and side-dumping muck trucks;

[0010] A multi-way passing platform capable of accommodating at least three groups of muck trucks for smooth passing;

[0011] A temporary storage bin is provided at the end of the multi-way passing platform;

[0012] A slag tipping machine is provided above the temporary storage bin, and is used to tip the slag in the side-turning slag truck to the temporary storage bin;

[0013] A slag transfer belt conveyor provided below the temporary storage bin;

[0014] An off-road belt conveyor is used to transfer the slag transferred by the slag transfer belt conveyor to a slag unloading site.

[0015] Preferably, at least two gates are provided in the temporary storage bin for controlling the falling speed of the debris.

[0016] Preferably, the number of the slag tippers is the same as the number of the side-dumping dump trucks in the dump truck formation.

[0017] Preferably, the multi-branch passing platform includes a passing platform, a symmetrical turnout, a single turnout and a crossover, one side of the symmetrical turnout is connected to the passing platform, and the other side of the symmetrical turnout is connected to the single turnout and the crossover.

[0018] Preferably, the temporary storage bin is arranged in the assembly plant.

[0019] A method for transporting slag, comprising:

[0020] Load the excavated soil into the muck truck group;

[0021] Controlling the muck truck group to move along the multi-way passing platform to above the temporary storage bin;

[0022] Using a slag dumper to dump the slag transported by the slag trucks into the temporary storage bin;

[0023] The muck truck group is controlled to return to the tunnel face, and the muck in the temporary storage bin is transferred to the muck unloading site through the muck transfer belt conveyor and the off-road belt conveyor.

[0024] The tunnel boring machine slag transfer system provided by the present invention continuously transports slag through a group of slag trucks, and cooperates with a slag turner to quickly turn the slag into a temporary storage bin. The slag in the temporary storage bin is transferred to the slag unloading site outside the tunnel via a slag transfer belt conveyor and an off-road belt conveyor. This not only introduces the high efficiency of slag trucks in carrying slag, but also avoids the time loss caused by the slag unloading of the hoisting system. The slag transfer belt conveyor and the off-road belt conveyor are used to efficiently complete the final slag discharge and transfer of the slag, avoiding the shortcomings of low transportation efficiency and difficult maintenance of continuous belt conveyors. It is efficient, convenient and has a wide range of applications.

[0025] In addition, the present invention also provides a slag transfer method for the above-mentioned tunnel boring machine slag transfer system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0027] Figure 1 This is a structural schematic diagram of a specific embodiment of the tunnel boring machine slag transfer system provided by the present invention;

[0028] Figure 2 This is a structural diagram of a muck truck formation;

[0029] Figure 3 This is a schematic diagram of the process of a slag tipper turning over a side dump truck to unload slag.

[0030] Figure 1-Figure 3 middle:

[0031] 1 is a multi-turnout passing platform, 11 is a passing platform, 12 is a symmetrical turnout, 13 is a single turnout, 14 is a crossover, 2 is a muck truck formation, 21 is a side-tipping muck truck, 22 is an electric locomotive, 3 is an assembly plant, 4 is a slag tipper, 5 is a temporary storage bin, 51 is a gate, 6 is a slag transfer belt conveyor, 7 is an off-road belt conveyor, and 8 is a slag unloading site. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] The core of the present invention is to provide a tunnel boring machine slag transfer system, which effectively combines the slag truck grouping and belt conveyor transportation system to transfer slag, has a simple structure, efficient transportation, and a wide range of applications.

[0034] In addition, the present invention also provides a slag transfer method for a tunnel boring machine slag transfer system.

[0035] Please refer to Figure 1-Figure 3 , Figure 1 This is a structural schematic diagram of a specific embodiment of the tunnel boring machine slag transfer system provided by the present invention; Figure 2 This is a structural diagram of a muck truck formation; Figure 3 This is a schematic diagram of the process of a slag tipper turning over a side dump truck to unload slag.

[0036] The tunnel boring machine slag transfer system provided by the present invention comprises:

[0037] At least three muck truck groups 2, each muck truck group 2 including an electric locomotive 22 and a side-dumping muck truck 21;

[0038] A multi-lane passing platform 1 that can accommodate at least three groups of muck trucks 2 for smooth passing;

[0039] A temporary storage bin 5 is provided at the end of the multi-way passing platform 1;

[0040] The slag turning machine 4 is provided above the temporary storage bin 5 and is used to turn the slag in the side-turning slag truck 21 to the temporary storage bin 5;

[0041] A slag transfer belt conveyor 6 is provided below the temporary storage bin 5;

[0042] The cross-country belt conveyor 7 is used to transfer the slag transferred by the slag transfer conveyor 6 to the slag unloading site 8.

[0043] Among them, the temporary storage bin 5 and the slag unloading site 8 are both located outside the tunnel. Among the two, the temporary storage bin 5 is closer to the tunnel entrance, while the slag unloading site 8 is farther away from the tunnel entrance; the slag transfer belt conveyor 6 and the off-road belt conveyor 7 together constitute a belt conveyor transportation system.

[0044] The multi-way passing platform 1 can accommodate at least three groups of muck trucks 2 to pass each other smoothly, that is, the multi-way passing platform 1 can accommodate at least three groups of muck trucks 2 to run simultaneously. The specific structure of the multi-way passing platform 1 needs to be designed according to the maximum number of muck trucks 2 running simultaneously and the size of the mine.

[0045] Preferably, please refer to Figure 1 The multi-turn pass platform 1 may include a passing platform 11, a symmetrical turnout 12, a single turnout 13 and a crossover 14. One side of the symmetrical turnout 12 is connected to the passing platform 11, and the other side of the symmetrical turnout 12 is connected to the single turnout 13 and the crossover 14.

[0046] Among them, the symmetrical turnout 12 is provided with a rear end turnout close to the face, and the crossover 14 is provided with a front end turnout close to the temporary storage bin; the front end turnout and the rear end turnout are both provided with positioning devices, which are used to detect the position of the muck truck formation 2 and transmit the corresponding position signal to the central controller of the multi-turnout passing platform 1.

[0047] Both the front and rear turnouts are equipped with switches for controlling the direction of travel of muck car group 2 and switch indicator lights for indicating the direction of travel of muck car group 2. The switches and switch indicator lights are connected to the central controller signal.

[0048] In order to avoid collision, congestion and other problems of the muck truck group 2, the central controller usually controls the muck truck group 2 to run on the right-hand principle.

[0049] For example, take the case of three muck trucks running simultaneously on the multi-track passing platform 1. Figure 1 The track intersections of the passing platform 11, the symmetrical turnout 12, the single turnout 13 and the crossover 14 are all equipped with switchmen and turnout indicator lights.

[0050] Assume that in the initial state, group a is loading slag at the tunnel face, group b is unloading slag at the temporary storage bin 5, and group c is running from the temporary storage bin 5 to the tunnel face; after group a completes slag loading, it runs from the tunnel face to the temporary storage bin 5, and after group b completes slag unloading, it runs from the temporary storage bin 5 to the tunnel face.

[0051] When marshalling a runs towards the temporary storage bin 5, it may run in the opposite direction to marshalling b and marshalling c. When the two are located on both sides of the same track intersection, it is necessary to control the switchman and the turnout indicator light to complete the passing of the marshallings.

[0052] Taking the example of marshaling a and marshaling b meeting at the intersection of the crossover 14, if marshaling a is located at the right branch and marshaling b is located at the left branch (the left and right branches are based on the direction of running from the temporary storage bin 5 to the tunnel face), the right branch can be controlled to open by the switchman, so that marshaling b enters the right branch via the intersection of the crossover 14, and then the left branch can be controlled to open by the switchman, so that marshaling a enters the left branch via the intersection of the crossover 14, completing the passing of marshaling a and marshaling b.

[0053] It should be noted that in order to save waiting time for passing other vehicles, the waiting time of the muck car formation 2 at the track intersection can be reduced by delay control or other means.

[0054] Therefore, the multi-switch passing platform 1 can control a group of dump trucks 2 to load dump trucks at the face, a group of dump trucks 2 to unload dump trucks at the temporary storage bin 5, and a group of dump trucks 2 to move to the face after completing unloading dump trucks, thereby realizing the uninterrupted transfer of multiple groups of dump trucks 2 and greatly improving the transportation efficiency of dump trucks.

[0055] Muck truck group 2 runs on the multi-turn platform 1 and is used to transfer muck between the tunnel face and the temporary storage bin 5. Figure 2 The muck truck formation 2 includes an electric locomotive 22 and several side-turning muck trucks 21. The electric locomotive 21 is used to pull the side-turning muck trucks 21 to run on the multi-turning platform 1.

[0056] The types, quantities and connection modes of the side dump muck truck 21 and the electric locomotive 22 are determined according to the muck transportation needs in actual production with reference to the existing technology.

[0057] The slag tipper 4 is used to tip the slag in the side-tipping dump truck 21 into the temporary storage bin 5. The specific type of the slag tipper 4 and the connection method between the slag tipper 4 and the side-tipping dump truck 21 need to be determined according to actual production needs and will not be repeated here.

[0058] In order to improve the slag unloading efficiency of the side-turning muck truck 21, it is preferred that the number of slag turners 4 can be set to be the same as the number of side-turning muck trucks 21 in the muck truck formation 2. When unloading slag, the slag turners 4 correspond one-to-one to the side-turning muck trucks 21 in the muck truck formation 2.

[0059] The temporary storage bin 5 is used to temporarily store the slag transferred by the side-tipping slag truck 21. The capacity of the temporary storage bin 5 is determined according to the number of slag truck groups 2 running at the same time and the slag transport volume of a single slag truck group 2 to ensure that the slag transfer will not be stagnant due to the temporary storage bin 5 being full.

[0060] In order to prevent rainwater and the like from entering the temporary storage bin 5, preferably, the temporary storage bin 5 can be set in the assembly plant 3. The structure and size of the assembly plant 3 are determined according to the needs of actual production and will not be repeated here.

[0061] Preferably, at least two gates 51 for controlling the falling speed of the slag can be provided in the temporary storage bin 5 to prevent a large amount of slag from suddenly falling and pressing the slag belt conveyor 6 to stop.

[0062] The specific types, sizes and installation positions of the slag transfer belt conveyor 6 and the off-road belt conveyor 7 need to be determined according to the slag discharge needs in actual production with reference to the existing technology, and will not be described in detail here.

[0063] During use, the dump truck group 2 is controlled to load the slag generated by the tunnel boring machine at the tunnel face; after the slag loading is completed, the dump truck group 2 is controlled to run along the multi-branch passing platform 1 to above the temporary storage bin 5; the slag tipper 4 is used to tip the slag transferred by the dump truck group 2 into the temporary storage bin 5; after the dump truck group 2 unloads, the dump truck group 2 is controlled to return to the tunnel face along the multi-branch passing platform 1, and the slag transfer belt conveyor 6 and the off-road belt conveyor 7 transfer the slag in the temporary storage bin 5 to the slag unloading site 8.

[0064] In this embodiment, the slag can be continuously transported by the slag truck formation 2 through delay control, and the slag can be quickly turned over into the temporary storage bin 5 in cooperation with the slag turner 4. The slag in the temporary storage bin 5 is transported to the slag unloading site 8 outside the tunnel through the slag transfer belt conveyor 6 and the cross-country belt conveyor 7. This not only introduces the high efficiency of slag trucks in transporting slag, but also avoids the time loss caused by the hoisting system unloading slag, circumvents the shortcomings of low efficiency and difficult maintenance of continuous belt conveyors, and uses the slag transfer belt conveyor 6 and the cross-country belt conveyor 7 to efficiently complete the final slag discharge and transfer of the slag, which is efficient, convenient and has a wide range of applications.

[0065] The tunnel boring machine slag transfer system provided in this embodiment combines the advantages of belt conveyor transfer and dump truck transfer methods. Compared with the traditional continuous belt conveyor slag discharge system, it reduces maintenance costs and avoids the problem of slag falling along the way in the tunnel; compared with the traditional mine car slag discharge method, it does not require a lifting system to transfer slag, has a wide range of uses and improves slag discharge efficiency.

[0066] In addition to the above-mentioned tunnel boring machine slag transfer system, the present invention further provides a slag transfer method for the tunnel boring machine slag transfer system disclosed in the above-mentioned embodiment, comprising:

[0067] Step S1, loading the muck generated by excavation into muck truck group 2;

[0068] Step S2, controlling the muck truck group 2 to move along the multi-way passing platform 1 to above the temporary storage bin 5;

[0069] Step S3, using the slag dumper 4 to dump the slag transported by the slag truck group 2 into the temporary storage bin 5;

[0070] Step S4 , controlling the muck truck group 2 to return to the tunnel face, and transferring the muck in the temporary storage bin 5 to the muck unloading site 8 through the muck transfer conveyor 6 and the off-road conveyor 7 .

[0071] It is necessary to explain step S2 and step S4 that when two or more groups of dump trucks 2 are running simultaneously on the multi-branch passing platform 1, it is necessary to select the branch road according to the running direction and position of each dump truck group 2 to avoid collision or stopping and waiting of multiple dump truck groups 2 when passing each other, so as to realize uninterrupted operation of multiple groups of dump trucks 2 on the multi-branch passing platform 1.

[0072] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0073] The above is a detailed introduction to the tunnel boring machine slag transfer system and slag transfer method provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core concept. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A tunnel slag transfer method, applied to a tunnel boring machine tunnel slag transfer system, characterized in that: include, Loading the excavated soil into the muck truck group (2); Controlling the muck truck group (2) to move along the multi-track passing platform (1) to above the temporary storage bin (5); Using a slag turning machine (4) to turn the slag transported by the slag truck group (2) sideways and pour it into the temporary storage bin (5); Controlling the muck truck group (2) to return to the tunnel face, and transferring the muck in the temporary storage bin (5) to the muck unloading site (8) via a muck transfer belt conveyor (6) and an off-road belt conveyor (7); The tunnel boring machine slag transfer system includes: At least three groups of muck trucks (2), wherein the muck trucks (2) include electric locomotives (22) and side-rolling muck trucks (21); A multi-lane passing platform (1) capable of accommodating at least three groups of muck trucks (2) for smooth passing; A temporary storage bin (5) provided at the end of the multi-branch passing platform (1); A slag turning machine (4) disposed above the temporary storage bin (5) is used to turn the slag in the side-turning slag truck (21) over to the temporary storage bin (5); A slag transfer belt conveyor (6) provided below the temporary storage bin (5); An off-road belt conveyor (7) for transferring the slag transferred by the slag transfer belt conveyor (6) to a slag unloading site (8); The temporary storage bin (5) is provided with at least two gates (51) for controlling the falling speed of the debris; The multi-turn turnout platform (1) comprises a turnout platform (11), a symmetrical turnout (12), a single turnout (13) and a crossover (14), wherein one side of the symmetrical turnout (12) is connected to the turnout platform (11), and the other side of the symmetrical turnout (12) is connected to the single turnout (13) and the crossover (14).

2. The method for transporting slag according to claim 1, characterized in that: The number of the slag tippers (4) is the same as the number of the side-tip dump trucks (21) in the dump truck formation (2).

3. The method for transporting slag according to claim 1 or 2, characterized in that: The temporary storage bin (5) is arranged in the assembly plant (3).

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