Inclined shaft construction system

Abstract

The utility model belongs to the technical field of inclined shaft tunneling, and particularly provides an inclined shaft construction system. The inclined shaft construction system comprises an assembly cavern, a deslagging system and a material transportation system, the deslagging system comprises a rock slag transfer device arranged in the assembly cavern, the material transportation system comprises a winch and a transportation vehicle, the winch is provided with a traction rope, and the rock slag transfer device is arranged on one of the left side and the right side of the assembly cavern. The slag discharging system further comprises a rock slag redirection device, and the rock slag redirection device is used for receiving rock slag generated during inclined shaft construction downward sliding and guiding the rock slag to the rock slag transfer device. The winch is arranged on the other side of the left side and the right side of the assembly cavern, the material transportation system further comprises a bend wheel used for being installed on a heading machine, and the traction rope bypasses the bend wheel to be connected with the transportation vehicle. According to the inclined shaft construction system, the transverse space of the assembly cavern can be fully utilized to arrange slag discharging and material conveying related equipment, mutual interference of all the equipment in the construction process is avoided, and reasonable and efficient construction is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of inclined shaft excavation, in particular to an inclined shaft construction system. Background Art

[0002] The water diversion inclined shaft is an inclined shaft tunnel that connects the upper and lower horizontal tunnels. How to construct the water diversion inclined shaft is a difficult point in the pumped storage power station project. With the continuous advancement of TBM technology, technical solutions for using inclined shaft TBM to excavate the water diversion inclined shaft upward have also begun to appear in the existing technology. When excavating upward, the horizontal tunnel located below is used as the assembly cavern or the starting cavern, and the TBM excavates obliquely upward until the inclined shaft is connected with the horizontal tunnel located above. The horizontal tunnel above is equivalent to the receiving cavern.

[0003] For example, the patent document of the applicant's application publication number CN112412478A provides a inclined shaft construction system, which includes a TBM, a slag discharge system, a material transportation system, etc. After the TBM adjusts the excavation posture in the assembly cavern, it changes to an inclined upward excavation. During the upward excavation process, the rock slag generated by the excavation can slide down from the slag chute at the bottom of the TBM under the action of gravity. The slag discharge system is arranged in the assembly cavern, mainly used to receive the rock slag that slides down from the slag chute, and transfer the rock slag backward to the position where the slag discharge vehicle receives it. The material transportation system includes a winch (windlass), a traction rope, a material transport vehicle (locomotive), and a reversing wheel. The winch is arranged in the assembly cavern, and the reversing wheel is arranged on the wall of the inclined shaft. The traction rope is a ring-shaped traction rope that bypasses the reversing wheel and the winch. The material transport vehicle is installed on the traction rope through a lock and can move with the traction rope, so that the material transport vehicle is sent to the inclined shaft to transport materials to the front of the inclined shaft construction.

[0004] In actual use, the above-mentioned material transport system needs to continuously extend forward as the TBM advances forward, and this process requires frequent disassembly and assembly of the reversing wheel, which results in low construction efficiency. To this end, the applicant's patent document with application publication number CN114893244A provides a rear-end supporting system for TBM in an inclined shaft, in which a winch is provided on the trailer group of the rear-end supporting system, and the winch pulls the material transport vehicle from the assembly cavern up the slope into the inclined shaft through a traction rope. As the TBM advances forward, the winch also moves forward, and does not need to be frequently disassembled and assembled, thereby improving construction efficiency.

[0005] However, in some projects, the slope of the inclined shaft is relatively large, which requires the material transport vehicle to have a strong climbing ability, and naturally requires a high-power winch. However, the volume of a high-power winch is also relatively large, resulting in insufficient space on the trailer of the TBM rear supporting system to install the winch. At this time, the only option is to arrange the winch in the assembly cavern. However, the assembly cavern is also equipped with a slag discharge system. If the arrangement is unreasonable, it is easy to cause different equipment to interfere with each other during operation, affecting normal construction. Utility Model Content

[0006] The utility model aims to provide an inclined shaft construction system to solve the technical problem that the slag discharge system and the material transportation system in the prior art assembly cavern are difficult to arrange reasonably, thus affecting the normal construction.

[0007] To achieve the above purpose, the technical solution of the inclined shaft construction system provided by the utility model is:

[0008] The inclined shaft construction system includes an assembly cavern, a slag discharge system and a material transportation system. The slag discharge system includes a slag transfer device arranged in the assembly cavern. The material transportation system includes a winch and a transport vehicle. The winch is equipped with a traction rope. The slag transfer device is arranged on one of the left and right sides of the assembly cavern. The slag discharge system also includes a slag redirecting device. The slag redirecting device is used to receive slag sliding down from the inclined shaft construction and guide the slag to the slag transfer device; the winch is arranged on the other side of the left and right sides of the assembly cavern. The material transportation system also includes a redirecting wheel for installation on a tunnel boring machine. The traction rope passes around the redirecting wheel and is connected to the transport vehicle.

[0009] As a further improvement, the assembly cavern is also provided with an auxiliary area located behind the winch, and the auxiliary area is used to arrange at least one of a high-voltage switch closing station, a tool maintenance room, and concrete transfer equipment.

[0010] As a further improvement, the slag transfer device includes a purification device, a water storage device and a slag-water separation system. The slag-water separation system is connected to the purification device so that water separated by the slag-water separation system flows to the purification device, and the water outlet of the purification device is connected to the water storage device.

[0011] As a further improvement, the slag-water separation system, the purification device and the water storage device are arranged in front and back.

[0012] As a further improvement, the slag-water separation system includes at least two stages of slag-water separation devices connected in series, and the water outlet of the rearmost slag-water separation device is connected to the purification device.

[0013] As a further improvement, the slag-water separation device at the front end is a vibrating screen arranged obliquely downward, and the slag-water separation device at the rear end is a spiral slag-water separator. A guide device connected to the slag-water separator is provided under the screen of the vibrating screen.

[0014] As a further improvement, the slag transfer device also includes a first belt conveyor and a second belt conveyor connected in series, the first belt conveyor and the slag discharge end of the vibrating screen are correspondingly arranged, and the second belt conveyor and the slag discharge port of the slag-water separator are correspondingly arranged.

[0015] As a further improvement, the slag transfer device also includes a dosing device, which is used to add water purification additives to the purification device.

[0016] As a further improvement, the material transport system also includes at least two guide wheels, and the traction rope passes around the guide wheels and the turning wheels to be connected to the transport vehicle. The guide wheels divide the traction rope between the turning wheels and the winch into a first section, a second section and a third section arranged in sequence from back to front. The first section and the third section extend in the front-to-back direction, and the third section is located on the side of the first section close to the center of the assembly chamber.

[0017] As a further improvement, the material transport system further comprises a travelling overhead sheave, and the traction rope passes around the redirecting wheel and the travelling overhead sheave and is connected to the transport vehicle.

[0018] The beneficial effect is that the utility model belongs to an improved invention. During construction, the slag transfer device is arranged on one of the left and right sides of the assembly cavern, so as to avoid the space in the middle of the assembly cavern and the other side of the left and right sides, and under the action of the slag redirecting device, the slag sliding down from the inclined shaft can also flow smoothly to the slag transfer device to ensure normal slag discharge. The winch is arranged on the other side of the left and right sides of the assembly cavern, and under the action of the redirecting wheel, the traction rope can bypass the tunnel boring machine and change direction, pulling the transport vehicle to move from the area between the winch and the slag transfer device. Compared with the prior art, the inclined shaft construction system in the utility model can make full use of the space in the horizontal direction of the assembly cavern, that is, the left and right directions, to arrange the equipment related to slag discharge and material transportation, avoid interference between the equipment during the construction process, and ensure reasonable and efficient construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a top view of the inclined shaft construction system embodiment of the utility model during construction;

[0020] Figure 2 for Figure 1 Front view of the mid-slag discharge system.

[0021] Description of reference numerals:

[0022] 1. TBM; 2. Material transport system; 3. Slag discharge system; 4. Auxiliary area; 100. Inclined shaft; 200. Assembly cavern; 101. Slag chute; 201. Winch; 202. Towing rope; 203. Second guide wheel; 204. First guide wheel; 205. Redirecting wheel; 206. First traveling sheave; 207. Second traveling sheave; 208. Transport vehicle; 301. Slag redirecting pipe; 302. Slag chute; 303. Dosing device; 304. Diversion device; 305. Vibrating screen; 306. Dosing pipe; 307. Slag-water separator; 308. First belt conveyor; 309. Purification device; 310. Water pipe; 311. Water storage device; 312. Second belt conveyor; 313. Slag vehicle. DETAILED DESCRIPTION

[0023] In order to reasonably utilize the space of the assembly cavern and ensure that each device can normally transport materials and transfer rock slag outward during construction, the basic technical concept of the utility model is to utilize the space in the left and right directions of the assembly cavern (the inclined shaft excavation direction is the front and back direction), arrange the rock slag transfer device with a larger volume and more space in the slag discharge system on one side of the left and right sides of the assembly cavern, and arrange the winch with a larger volume and more space in the material conveying system on the other side of the left and right sides of the assembly cavern, and the area between the winch and the rock slag transfer device, that is, the middle area of ​​the assembly cavern, is for the transport vehicle to pass through. This achieves the non-interference between material transportation and rock slag transfer, ensuring the normal progress of construction.

[0024] The present invention is further described in detail below in conjunction with the embodiments.

[0025] Specific embodiments of the inclined shaft construction system provided by the utility model:

[0026] The inclined shaft construction system provided in this embodiment is as follows: Figure 1 and Figure 2 As shown, it includes an assembly cavern 200, a material transportation system 2 and a slag discharge system 3. The assembly cavern 200 is the cavern from which the tunnel boring machine 1 starts. The material transportation system 2 is used to transport materials to the tunnel boring machine 1 and to transport workers to the work area when the tunnel boring machine 1 is diagonally excavating upward. The slag discharge system 3 is used to receive the rock slag that slides down during the excavation of the tunnel boring machine 1 and to transport the rock slag backwards so that the slag truck 313 can receive it. The specific structure of the tunnel boring machine 1 is the existing technology, and a slag channel 101 (trough) is provided inside it. The rock slag generated by excavation can slide down from the slag channel 101. The specific excavation principle is the existing technology and will not be described in detail here.

[0027] Specifically, Figure 1 and Figure 2 As shown, the slag discharge system 3 includes a slag redirection device. Specifically, the slag redirection device is a tubular structure (circumferentially closed), that is, a slag redirection pipe 301. One end of the slag redirection pipe 301 can be overlapped at the wellhead of the inclined shaft 100 to receive the slag flowing down from the slag channel 101. Under the action of the slag redirection pipe 301, the slag entering the slag redirection pipe 301 can flow to the slag transfer device at the rear end. It should be noted that in other embodiments, the slag redirection device can also select a circumferentially non-closed groove structure. During construction, the slag transfer device is generally arranged on one side of the left and right sides of the assembly cavern 200. The left and right sides mentioned here actually refer to the lateral sides of the assembly cavern 200, or the left and right sides relative to the front and rear directions of the excavation of the inclined shaft 100. Under the action of the slag redirection pipe 301, the slag can smoothly enter the slag transfer device located on one side of the left and right sides.

[0028] The material transportation system 2 includes a winch 201, which is a winch 201 in the prior art, and includes a driving device and a drum, etc. The driving device can be a hydraulic motor or a driving motor. The winch 201 is also equipped with a traction rope 202, and the drum can wind the rope to convert the torque of the drum into the traction force of the traction rope 202. Naturally, the material transportation system 2 also includes a transport vehicle 208, and the power of the winch 201 is transmitted to the transport vehicle 208 through the traction rope 202, driving the transport vehicle 208 to move forward. During construction, the winch 201 is arranged on the other side of the left and right sides of the assembly cavern 200, that is, the other side opposite to the slag transfer device, and the area between the winch 201 and the slag transfer device forms an area for the transport vehicle 208 to pass through. Since the winch 201 is arranged in the assembly cavern 200, and the transport vehicle 208 needs to be transported upward from the assembly cavern 200, in order to realize the upward movement of the transport vehicle 208, the material transportation system 2 also includes a redirecting wheel 205, which is equivalent to a fixed pulley and plays a role in guiding and changing the direction of the traction rope 202. During construction, the redirecting wheel 205 can be installed on the tunnel boring machine 1, preferably, the redirecting wheel 205 can be installed on the trailer at the rear of the tunnel boring machine 1.

[0029] Different from the prior art, this embodiment efficiently and reasonably utilizes the lateral space of the assembly cavern 200. During construction, the installation and arrangement of slag transfer, material transportation and winch 201 are staggered in the horizontal direction and will not interfere with each other, thus ensuring the normal operation of various types of work during the construction process.

[0030] The main function of the slag transfer device is to transport slag so that it can be received by the slag truck 313. Considering that the slag may adhere to the side wall of the slag channel 101 during the slag sliding process, in actual implementation, flushing water can be used to flush the slag channel 101. At this time, the slag flowing to the slag transfer device is actually a mixture of slag and water. In order to save water resources, Figure 2As shown, the slag transfer device in this embodiment also includes a slag-water separation system, a water storage device 311 and a purification device 309. After the slag-water mixture enters the slag-water separation system, it can be separated into blocky slag and muddy water. The slag-water separation system is connected to the purification device 309, and the separated muddy water can enter the purification device 309, and the muddy water can be purified into purer water in the purification device 309. The purification device 309 can select the relevant device commonly used for purifying water in the prior art, and the structure of the purification device 309 is not specifically limited here. The purification device 309 has a water outlet, and the water outlet is connected to the water storage device 311, specifically through water pipes 310310. The water purified by the purification device 309 can enter the water storage device 311 from the water outlet and be stored in the water storage device 311. The water storage device 311 can be a related device such as a water storage tank, a water storage tank, a water storage pool, etc. When water is needed, the water in the water storage device 311 can be directly extracted. It should be noted that when the above-mentioned devices are connected, if the water pressure is insufficient, a water pump can be added to the connecting pipes.

[0031] More specifically, the slag-water separation system, the purification device 309, and the water storage device 311 are arranged in the front-to-back direction. In this way, the space in the front-to-back direction of the assembly cavern 200 can be fully utilized to prevent the slag transfer device from occupying too much lateral space of the assembly cavern 200. Of course, in other implementations, depending on the lateral width of the assembly cavern 200 and the size of each device, for example, if the purification device 309 and the water storage device 311 are small in size, the two can also be arranged side by side in the horizontal direction.

[0032] In order to improve the effect of slag-water separation, it is ensured that the muddy water entering the purification device 309 can be in a relatively pure state. The slag-water separation system includes at least two stages of slag-water separation devices connected in series, so that more than two stages of slag-water separation can be achieved. It should be noted that the series connection here refers to the muddy water separated by the slag-water separation device of the previous stage entering the slag-water separation device of the next stage. From the perspective of the entire separation process, it can be understood as a series connection. In the entire slag-water separation system, the slag-water separation device at the end is connected to the purification device 309.

[0033] Specifically, the slag-water separation system includes a vibrating screen 305, which is arranged obliquely downward. In the slag-water mixed with rock slag flowing to the vibrating screen 305, water and small pieces of slag can fall downward through the screen of the vibrating screen 305. Since the vibrating screen 305 is arranged obliquely downward, under the action of gravity, large pieces of slag can automatically flow backward to achieve primary slag-water separation, that is, the vibrating screen 305 is actually a primary slag-water separation device. The slag-water separation system also includes a slag-water separator 307, specifically, the slag-water separator 307 is a spiral slag-water separator 307 in the prior art. A guide device 304 is provided below the screen of the vibrating screen 305, and water and small pieces of slag can flow through the screen of the vibrating screen 305 to the slag-water separator 307 through the guide device 304, and achieve secondary separation through the slag-water separator 307, that is, the slag-water separator 305 is a secondary slag-water separation device. The drainage port of the slag-water separator 307 is connected to the purification device 309. The flow guide device 304 can be a funnel-shaped flow guide. The vibration screen 305 and the slag-water separator 307 are used together. From the perspective of the entire slag-water separation process, it is equivalent to two processes, namely, rough separation and fine separation, which can ensure the separation effect and have a faster slag-water separation speed.

[0034] More specifically, the slag transfer device further includes a first belt conveyor 308 and a second belt conveyor 312, which are connected in series. The slag blocks on the first belt conveyor 308 can be transported to the second belt conveyor 312, and then transported to the slag car 313 by the second belt conveyor 312. The first belt conveyor 308 and the slag discharge end (i.e., the inclined lower end) of the vibrating screen 305 are correspondingly arranged, and are mainly used to receive and transport the slag blocks separated by the vibrating screen 305. The second belt conveyor 312 and the slag discharge port of the slag-water separator 307 are correspondingly arranged, and are mainly used to receive and transport the slag blocks separated by the slag-water separator 307. In this way, the separated slag blocks can be transported backward from the same belt conveyor, which is convenient and efficient.

[0035] In order to improve the water purification effect of the purifier 309, the slag transfer device further includes a dosing device 303, which is used to add water purification additives to the purifier 309. Specifically, the dosing device 303 is connected to the purifier 309 through a dosing pipe 306, and the water purification additive in the dosing device 303 can be added to the purifier 309 through the dosing pipe 306. More specifically, the water purification additive can be a chemical such as a flocculant.

[0036] In order to improve the stability of the traction rope 202 during material transportation, as a preferred embodiment, the material transportation system 2 also includes a guide wheel, and the traction rope 202 passes through the guide wheel and the redirecting wheel 205 to connect with the transport vehicle 208. The function of the guide wheel is mainly to control the tension and direction of the traction rope 202, so that the traction rope 202 deflects toward the middle of the assembly cavern 200 during construction, thereby preventing the traction rope 202 from swinging randomly during construction. Specifically, at least two guide wheels should be provided, such as Figure 1 The first guide wheel 204 and the second guide wheel 203 in the assembly chamber 200 cooperate with each other to play the role of pressing and guiding the rope, thereby dividing the traction rope 202 between the winch 201 and the redirecting wheel 205 into the first section, the second section and the third section arranged in sequence from back to front, the first section and the third section both extend in the front-to-back direction, and the third section is located on the side of the first section close to the center of the assembly chamber 200. During installation, the guide wheel can be installed on the top wall or the side wall of the assembly chamber 200, and the construction personnel can flexibly install it according to needs.

[0037] In order to improve the stability of the traction rope 202, as an optional embodiment, the material transportation system 2 further includes a traveling sheave, and the traction rope 202 passes around the redirecting wheel 205 and the traveling sheave to connect with the transport vehicle 208. In this way, when the winch 201 retracts and releases the traction rope 202, the traveling sheave can move with it to ensure the stability of the traction rope 202. Specifically, more than two traveling sheaves can be provided, for example Figure 1 The first traveling sheave 206 and the second traveling sheave 207 in the middle can form more than two points of support for the traction rope 202.

[0038] Of course, in other embodiments, it is not necessary to provide guide wheels or floating sheaves. For example, the axis of the drum configured by the winch 201 can extend vertically, and in this case, only one redirecting wheel 205 for installation on the roadheader 1 is provided, and the transport vehicle 208 can be lifted upward relatively stably when the traction rope 202 is retracted or released.

[0039] When the tunnel boring machine 1 is diagonally excavating upward, auxiliary supporting facilities or equipment are also used, such as a high-voltage switch closing station, a tool maintenance room, concrete transfer equipment, etc. In this embodiment, the assembly cavern 200 is further provided with an auxiliary area 4 behind the winch 201, such as Figure 1 As shown, in this way, the lateral space of the assembly cavern 200 can be used to place at least one of the three auxiliary facilities or equipment mentioned above, so that the auxiliary supporting facilities or equipment can be prevented from interfering with the movement of the slag truck 313. Of course, in other embodiments, if more guide wheels are configured and there is sufficient space in front of the winch, the direction of the traction rope 202 is actually determined, and the position in front of the winch 201 that can avoid the traction rope 202 can also be used to place one or more auxiliary equipment.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An inclined shaft construction system, comprising an assembly cavern, a slag discharge system and a material transportation system, wherein the slag discharge system comprises a slag transfer device arranged in the assembly cavern, and the material transportation system comprises a winch and a transport vehicle, wherein the winch is equipped with a traction rope, and is characterized in that: The slag transfer device is arranged on one of the left and right sides of the assembly chamber, and the slag discharge system also includes a slag redirecting device, which is used to receive the slag sliding down from the inclined shaft construction and guide the slag to the slag transfer device; the winch is arranged on the other side of the left and right sides of the assembly chamber, and the material transportation system also includes a redirecting wheel for installation on the tunnel boring machine, and the traction rope passes around the redirecting wheel and is connected to the transport vehicle.

2. The inclined shaft construction system according to claim 1 is characterized in that: The assembly cavern is also provided with an auxiliary area located behind the winch, and the auxiliary area is used to arrange at least one of a high-voltage switch closing station, a tool maintenance room, and concrete transfer equipment.

3. The inclined shaft construction system according to claim 1 or 2, characterized in that: The slag transfer device includes a purification device, a water storage device and a slag-water separation system. The slag-water separation system is connected to the purification device so that water separated by the slag-water separation system flows to the purification device. The water outlet of the purification device is connected to the water storage device.

4. The inclined shaft construction system according to claim 3 is characterized in that: The slag-water separation system, purification device and water storage device are arranged in front and back.

5. The inclined shaft construction system according to claim 3 is characterized in that the slag The water separation system comprises at least two stages of slag-water separation devices connected in series, and the water outlet of the slag-water separation device at the rear end is connected to the purification device.

6. The inclined shaft construction system according to claim 5 is characterized in that: The slag-water separation device at the front end is a vibrating screen arranged obliquely downward, and the slag-water separation device at the rear end is a spiral slag-water separator. A guide device connected to the slag-water separator is arranged at the lower part of the screen of the vibrating screen.

7. The inclined shaft construction system according to claim 6 is characterized in that: The slag transfer device also includes a first belt conveyor and a second belt conveyor connected in series. The first belt conveyor and the slag discharge end of the vibrating screen are correspondingly arranged, and the second belt conveyor and the slag discharge port of the slag-water separator are correspondingly arranged.

8. The inclined shaft construction system according to claim 3 is characterized in that: The slag transfer device also includes a dosing device, which is used to add water purification additives to the purification device.

9. The inclined shaft construction system according to claim 1, characterized in that: The material transport system also includes at least two guide wheels, and the traction rope passes around the guide wheels and the redirecting wheels to be connected to the transport vehicle. The guide wheels divide the traction rope between the redirecting wheels and the winch into a first section, a second section and a third section arranged in sequence from back to front. The first section and the third section extend in the front-to-back direction, and the third section is located on the side of the first section close to the center of the assembly chamber.

10. The inclined shaft construction system according to claim 1 or 9, characterized in that: The material transport system also includes a traveling overhead sheave, and a traction rope passes around the redirecting wheel and the traveling overhead sheave to be connected with the transport vehicle.

Images