Continuous belt deslagging system for double-hole double-line TBM (Tunnel Boring Machine) rotary inclined shaft

Abstract

The utility model relates to the technical field of transportation of muck in holes, in particular to a double-hole double-line TBM (tunnel boring machine) rotary inclined shaft continuous belt deslagging system which comprises a branch hole belt conveyor, a material distributing mechanism with a three-way funnel is arranged at the tail of the branch hole belt conveyor, and the material distributing mechanism distributes muck to a first transfer belt conveyor and a second transfer belt conveyor. The first transshipment belt conveyor and the second transshipment belt conveyor are arranged in a staggered mode, the tail of the first transshipment belt conveyor extends to the slag yard, and the tail of the second transshipment belt conveyor extends to the slag car. According to the utility model, the requirement of long-distance and large-capacity material transfer under complex geological conditions is met, and the double targets of economic benefit and environmental protection are taken into account at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel slag transportation, in particular to a double-tunnel double-line TBM inclined shaft continuous belt slag discharge system. Background Art

[0002] During mining and tunnel construction, large quantities of waste slag are generated. Efficiently transporting this waste slag from the working surface to the designated location is a critical issue. In recent years, TBM (Transportable Buried Machine) (TBM) construction technology has rapidly advanced, with a wide range of technologies being widely applied. However, the application of most technologies is limited to the TBM equipment itself within the tunnel. The slag removal method, compatible with TBM excavation, still relies on traditional rail transport within the tunnel and slag transfer by loaders and dump trucks outside the tunnel. With the rise of continuous belt conveyor technology for TBM excavation, slag removal efficiency has significantly improved. However, slag transfer outside the tunnel still relies on traditional loaders and small dump trucks to transport the slag to a waste dump, resulting in low construction efficiency and high maintenance costs. Furthermore, uncertainties such as insufficient dump truck transport capacity, access road interference, and inclement weather lead to a mismatch between the internal and external slag capacity, hindering construction progress and leading to an intangible increase in TBM excavation and slag removal costs.

[0003] Traditional transportation methods are inefficient, costly, and easily restricted by terrain conditions, which can have a certain impact on the environment. Therefore, it is particularly important to develop a waste slag transportation system that can adapt to complex environments and has high efficiency. Utility Model Content

[0004] The utility model provides a continuous belt slag discharge system for a double-hole double-line TBM inclined shaft. By optimizing the design parameters and layout structure of the belt conveyor, efficient transmission of waste slag from the tunnel to an external slag yard or slag truck is achieved.

[0005] The specific technical solution is as follows: it includes a branch tunnel belt conveyor, and a material distribution mechanism with a three-way funnel is provided at the tail end of the branch tunnel belt conveyor. The material distribution mechanism distributes the slag to transfer belt conveyor 1 and transfer belt conveyor 2. The transfer belt conveyor 1 and transfer belt conveyor 2 are arranged alternately. The tail end of the transfer belt conveyor 1 extends to the slag yard, and the tail end of the transfer belt conveyor 2 extends to the slag truck.

[0006] Preferably, the branch tunnel belt conveyor has a conveying capacity of more than 3 kilometers and can transport materials at a speed of 1,200 tons per hour.

[0007] Preferably, at least one transfer station is included, and at least two sets of drive motors with a power of more than 400KW are installed at each transfer station.

[0008] Preferably, a protective device is provided at the drive motor.

[0009] Preferably, the transfer belt conveyor unloads slag to the slag yard through a cantilever structure.

[0010] Preferably, the belts of the branch hole belt conveyor, the first transfer belt conveyor and the second transfer belt conveyor are all made of steel wire rope core material and have a width of not less than 1200 mm.

[0011] Preferably, a cleaning device for keeping the surface of the conveyor belt clean is provided at the head of the branch hole belt conveyor.

[0012] Preferably, the transfer belt conveyor 1 and the transfer belt conveyor 2 are both tightened by a tail spiral; the branch hole belt conveyor is tightened by a bottom car-type heavy hammer.

[0013] The beneficial effects of the present invention are:

[0014] 1. The utility model implements an efficient slag transportation solution, which significantly reduces the time wasted due to frequent parking and loading and unloading under traditional methods, thereby accelerating the overall project progress and improving construction efficiency.

[0015] 2. Compared with the traditional automobile transportation mode, the continuous belt conveying method of this utility model greatly reduces energy consumption and maintenance costs, and also reduces the demand for heavy machinery and equipment, thereby reducing costs.

[0016] 5. The regular maintenance and inspection system of this utility model, combined with the selection and use of high-quality materials, effectively extends the working life of each component, reduces the frequency of replacement, and thus extends the life of the equipment.

[0017] 6. Compared with other means of transportation, this system is more energy-saving and environmentally friendly, and meets the requirements of modern green building concepts. This slag discharge solution not only meets the needs of long-distance and large-capacity material transfer under complex geological conditions, but also takes into account the dual goals of economic benefits and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the process of the utility model;

[0019] Figure 2 This is a schematic diagram of the slag transfer layout of the branch tunnel of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the head of the middle branch hole belt conveyor of the utility model;

[0021] Figure 4 This is a structural diagram of the first transfer belt conveyor in the utility model;

[0022] Figure 5 This is a schematic diagram of the mechanism of the second transfer belt conveyor in the present utility model;

[0023] Figure 6 This is a schematic diagram of the middle drive layout of the central branch tunnel belt conveyor of the utility model;

[0024] Figure 7 This is a schematic diagram of the layout structure of the tail car-type heavy hammer tensioning device of the utility model;

[0025] Figure 8 This is a schematic diagram of the tail structure of the utility model's middle branch hole belt conveyor;

[0026] Figure 9 This is a schematic diagram of the hanging structure of the branch hole in the utility model; DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0028] Example 1

[0029] A continuous belt slag discharge system for a double-hole, double-line TBM inclined shaft, such as Figures 1 to 9 As shown, the system includes a branch tunnel conveyor. A material distribution mechanism with a three-way hopper is located at the rear of the branch tunnel conveyor. This distribution mechanism distributes the slag to transfer conveyor 1 and transfer conveyor 2. Transfer conveyor 1 and transfer conveyor 2 are arranged alternately, with the rear of transfer conveyor 1 extending to the slag yard, while the rear of transfer conveyor 2 extends to the slag truck. Transfer conveyor 1 unloads slag to the slag yard via a cantilever structure. Its foundation is located next to the retaining wall, with a cantilever distance of approximately 15 meters. Transfer conveyor 2 also discharges slag to two slag trucks via a three-way hopper.

[0030] The branch tunnel belt conveyor adopts central drive, and the driving part is 2*400KW and is installed in the water tank position. It has a conveying capacity of more than 3 kilometers and can transport materials at a speed of 1,200 tons per hour.

[0031] The tail of the branch tunnel belt conveyor is connected to the continuous belt conveyor for material discharge, and the support leg spacing is set to about 12 meters to ensure that there is no support at the tunnel section, ensuring a trackless transportation channel.

[0032] The system also includes at least one transfer station, each of which is equipped with at least two drive motors with a power of 400 kW or more. Protective devices are installed on the drive motors, and cleaning devices are installed at the head of the branch belt conveyor to keep the conveyor belt surface clean. A backstop is installed on the unloading roller to prevent the belt from reversing.

[0033] The belts of the branch tunnel belt conveyor, transfer belt conveyor 1 and transfer belt conveyor 2 are all made of wire rope core material and the width is not less than 1200mm.

[0034] Transfer belt conveyor 1 and transfer belt conveyor 2 both use the tail spiral tensioning method; the branch hole belt conveyor uses the bottom car-type weight method for tensioning, and the tail car-type weight tensioning device is located in the fire pressure room, where the tension is the smallest and is suitable for setting up a tensioning device.

[0035] In this embodiment, a hanging structure is used in the tunnel to ensure a 4.5-meter transportation space. The upper rollers are trough-type, the lower rollers are V-type rollers throughout, and an adjustable structure is designed at the head turning point.

[0036] During installation, the specific locations of all components are determined according to the design plan. The main conveyor belt, transfer belt, and associated auxiliary equipment are then assembled in sequence. Finally, commissioning is performed until the expected performance is achieved. Before startup, all mechanical components must be checked for proper condition. After powering on, the load must be gradually increased according to the pre-set schedule until full load is achieved. Regularly clean the conveyor belt surface and check its tension to maintain optimal operating conditions. The conveyor belt can be thoroughly cleaned at the end of each shift. All moving parts must be thoroughly inspected at least weekly for signs of wear or damage. A thorough overhaul and replacement of necessary parts should be performed annually.

[0037] The utility model utilizes the main and branch tunnel belt conveyor and the transfer belt conveyor to work in coordination to realize the rapid transportation of slag.

[0038] The main branch tunnel conveyor is configured to transport materials from the inside of the tunnel to the outside, with a conveying distance of more than 3.5 kilometers and capable of transporting materials at a speed of 1,200 tons per hour. It adopts a central drive method (2×400KW), which helps to evenly distribute the load and improve efficiency. In order to ensure the passage space of trackless transport vehicles, the spacing between the support legs is set to about 12 meters. In addition, a cleaning device and an unloading roller with a backstop are installed at its head to ensure the cleanliness of the equipment and prevent the belt from reversing.

[0039] A material distribution mechanism with a three-way hopper at the end of the main conveyor belt directs the slag in two different directions: to the slag dump via transfer conveyor 1, or to be loaded onto a slag truck via transfer conveyor 2. The two transfer conveyors are staggered, with one extending directly over the designated slag pile and unloading via a cantilevered structure. The other, utilizing the three-way hopper mechanism, simultaneously serves two slag trucks awaiting loading. This design not only improves slag discharge efficiency but also enhances system flexibility.

[0040] The entire system also includes multiple transfer stations, equipped with powerful drive units (at least 400 kW each) to maintain high power output. At the same time, all key components are well protected, such as the installation of dedicated safety guards around the motors. Steel wire rope cores are selected as the conveyor belt substrate, with a width of at least 1200 mm to enhance load-bearing capacity and durability. In addition, advanced tensioning technologies such as spiral tensioning (for transfer conveyors) and bottom-carriage weight tensioning (for main branch conveyors) are used to ensure that the appropriate tension level is maintained even after long-term operation.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A continuous belt slag discharge system for a double-hole, double-line TBM inclined shaft, characterized by: It includes a branch tunnel belt conveyor, at the tail of which is provided a material distribution mechanism with a three-way funnel. The material distribution mechanism distributes the slag to transfer belt conveyor 1 and transfer belt conveyor 2. The transfer belt conveyor 1 and transfer belt conveyor 2 are arranged alternately. The tail of the transfer belt conveyor 1 extends to the slag yard, and the tail of the transfer belt conveyor 2 extends to the slag truck.

2. The continuous belt slag discharge system for a double-hole, double-track TBM inclined shaft according to claim 1, characterized in that: The branch tunnel belt conveyor has a conveying capacity of more than 3 kilometers and can transport materials at a speed of 1,200 tons per hour.

3. The continuous belt slag discharge system for a double-hole, double-track TBM inclined shaft according to claim 1 is characterized by: It includes at least one transfer station, and at each transfer station at least two sets of drive motors with a power of more than 400KW are installed.

4. The continuous belt slag discharge system for a double-hole, double-track TBM inclined shaft according to claim 3 is characterized by: A protective device is provided at the driving motor.

5. The continuous belt slag discharge system for a double-hole, double-track TBM inclined shaft according to claim 1 is characterized in that: The transfer belt conveyor 1 unloads slag to the slag yard through the cantilever structure.

6. The continuous belt slag discharge system for a double-hole, double-track TBM inclined shaft according to claim 1, characterized in that: The belts of the branch hole belt conveyor, transfer belt conveyor 1 and transfer belt conveyor 2 are all made of steel wire rope core material and have a width of not less than 1200mm.

7. The continuous belt slag discharge system for a double-hole, double-track TBM inclined shaft according to claim 1, characterized in that: A cleaning device for keeping the surface of the conveyor belt clean is provided at the head of the branch hole belt conveyor.

8. The continuous belt slag discharge system for a double-hole, double-track TBM inclined shaft according to claim 1, characterized in that: The transfer belt conveyor 1 and the transfer belt conveyor 2 both adopt the tail spiral tightening method; the branch hole belt conveyor adopts the bottom car-type heavy hammer method for tightening.

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