Dam concrete underground transfer system

Abstract

The dam concrete underground transfer system comprises an underground tunnel, the underground tunnel comprises a straight line section and a communicating section, the straight line section is in straight line communication with a mixing station and a dam abutment, and the communicating section and the straight line section form an annular channel. The dam concrete transportation quality and efficiency can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydropower engineering dam construction, in particular to an underground dam concrete transfer system. Background Art

[0002] Concrete for ultra-high dams above 300m in height at home and abroad is basically unloaded from the mixing plant to dump trucks or mixer trucks, and then transported to the dam's material taking platform via on-site roads, driving tunnels and other transportation channels.

[0003] Generally, dam construction projects are large in scale and long in duration, requiring a large number of dump trucks or mixer trucks. In order to save transportation time, it is necessary to strictly control the passage of other construction vehicles, otherwise it is easy to cause traffic congestion on roads or driving tunnels.

[0004] In addition, when the dump truck and the cable crane bucket are aligned, the safety risk is relatively high. Most of the concrete is exposed to the air and is easily affected by solar radiation, rain, ash layer pollution, and strong winds. The moisture in the concrete evaporates quickly and the temperature rises quickly, which has a great impact on the quality of concrete construction. Utility Model Content

[0005] The utility model provides an underground dam concrete transfer system to solve the problem of inconvenient concrete transportation during dam construction.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A dam concrete underground transfer system includes an underground tunnel, wherein the underground tunnel includes a straight section and a connecting section, the straight section connects a mixing station and a dam abutment in a straight line, and the connecting section and the straight section form an annular channel.

[0008] Furthermore, the connecting section includes a discharge section, which extends along the length direction of the dam shoulder, and the discharge section is provided with a plurality of discharge channels, which are connected to the material taking platform.

[0009] Furthermore, a transport track is provided throughout the length of the underground tunnel, a transport vehicle runs on the transport track, and a unloading device is provided at each of the discharge channels, and the transport vehicle can unload at the unloading device.

[0010] Furthermore, the transport track is a circular track.

[0011] Furthermore, the unloading device includes a unloading hopper and a unloading chute that are interconnected, the unloading chute is arranged at an angle, and the output port of the unloading chute is aligned with the cable crane hoisting tank.

[0012] Furthermore, a feed shaft is provided at the entrance of the underground tunnel, the upper end of the feed shaft is aligned with the discharge port of the mixing station, and the lower end is aligned with the transport vehicle.

[0013] Furthermore, the underground tunnel excavation height is 1.5~1.8m, and the excavation width is 1.5~1.8m.

[0014] Furthermore, the top wall and side walls of the underground tunnel need to be supported by mesh spraying.

[0015] The utility model can achieve the following beneficial effects:

[0016] 1. This application proposes to construct an underground tunnel as a transportation channel for dam concrete, which will be warm in winter and cool in summer, and will help ensure the quality of concrete construction. In addition, it can reduce the traffic occupation of roads and driving tunnels by concrete transportation, and reduce the congestion of construction material transportation. The construction of the underground tunnel will not affect the utilization and construction of the dam abutment space, and will reduce the mutual interference between the pouring of dam concrete and the construction of dam abutment equipment rooms and control buildings. Finally, the underground tunnel can be permanently retained and used as a maintenance channel or a channel for laying equipment such as cables in the future, reducing investment.

[0017] 2. Setting up a circular transport track allows the transport vehicle to transport concrete along the transport track and then move along the transport track to the loading point, completing the concrete transportation line, reducing the manual participation in concrete transportation and liberating labor.

[0018] 3. Set up a discharging section and connect multiple discharging channels in the discharging section to achieve multi-point unloading, so that the cable crane bucket can take materials close to the construction point, shortening the operation path of the cable crane bucket. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a schematic diagram of the dam construction area;

[0021] Figure 2 This is a schematic plan view of an underground dam concrete transfer system according to the present utility model.

[0022] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0023] 1. Underground tunnel; 11. Straight section; 12. Connecting section; 13. Discharge section; 14. Discharge channel; 2. Transport track; 3. Transport vehicle; 4. Discharge device; 41. Discharge hopper; 42. Discharge chute; 43. Feeding shaft;

[0024] 100, dam; 200, crane hoist; 300, dam abutment; 400, driving tunnel; 500, reclaiming platform; 600, mixing station. DETAILED DESCRIPTION

[0025] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0026] like Figure 1 As shown, for ultra-high dam construction, abutments 300 are formed on both sides of dam 100. Dam abutments 300 are used for the construction of supporting buildings for dam 100 and for the temporary loading and transportation of materials during the construction of dam 100. When transporting concrete for dam 100, a crane is used to move the concrete to the pouring site. The crane's hoist rope is equipped with a crane hoist tank 200.

[0027] Usually, the transportation plan for transporting the dam 100 concrete from the mixing station 600 to the material taking platform 500 is as follows: after the dump truck or the mixer truck is loaded with concrete from the mixing station 600, the dump truck or the mixer truck is driven through the driving tunnel 400 or the road to arrive at the dam abutment 300. There is a material taking platform 500 built on the edge of the dam abutment 300. After the crane transports the crane bucket 200 and places it on the material taking platform 500, the dump truck or the mixer truck then pours the concrete into the crane bucket 200 at the edge of the dam abutment 300.

[0028] This application provides a dam concrete underground transfer system, such as Figure 2 As shown, it includes an underground tunnel 1, which includes a straight section 11 and a connecting section 12. The straight section 11 connects the mixing station 600 and the dam abutment 300 in a straight line, and the connecting section 12 and the straight section 11 form a ring channel. It should be noted here that the driving tunnel 400 is usually large in size and needs to meet the transportation requirements of normal driving. Therefore, when constructing the driving tunnel 400, it is necessary to consider the geological conditions and select a suitable route. The construction of the driving tunnel 400 does not necessarily follow the shortest route between the mixing station 600 and the dam abutment 300. When constructing the underground tunnel 1, since the underground tunnel 1 only needs to transport concrete, the size of the underground tunnel 1 is small and the geological conditions have little impact on its construction. Therefore, the excavation route of the underground tunnel 1 can be selected according to the shortest distance between the mixing station 600 and the dam abutment 300 to shorten the concrete transportation path.

[0029] The excavation width of underground tunnel 1 is 1.5-2 meters, and the excavation height is 2-2.5 meters. This meets the needs of concrete transportation and can later be used as a maintenance channel for permanent dam 100 or for laying cables and other equipment. During the excavation of underground tunnel 1, mesh shotcrete support is installed on the top and side walls of underground tunnel 1 to reduce the risk of earth collapse.

[0030] The connecting section 12 includes a discharge section 13 extending along the length of the dam abutment 300. Multiple discharge channels 14 are spaced along this section, connecting to the reclaiming platform 500. After the crane 200 is placed on the reclaiming platform 500, concrete discharged from the discharge channels 14 can be directly poured into the crane 200. Because different construction sections of the dam 100 require different reclaiming points near the reclaiming platform 500, the provision of multiple discharge channels 14 can shorten the transport path of the crane 200.

[0031] A circular transport track 2 is laid within the underground tunnel 1, on which a transport vehicle 3 travels, used to load and transport concrete. A feed shaft 43 is provided at the mixing station 600 within the underground tunnel 1. The upper end of the feed shaft 43 is aligned with the discharge port of the mixing station 600. The transport vehicle 3 can move along the transport track 2 to align with the lower end of the feed shaft 43, allowing concrete from the mixing station 600 to be transported directly to the transport vehicle 3 through the feed shaft 43.

[0032] The transport vehicle 3 can stop and unload at each discharge channel 14. A unloading device 4 is provided at each discharge channel 14. The unloading device 4 includes a unloading hopper 41 and a unloading chute 42 that are interconnected. The unloading chute 42 is inclined so that the concrete in the unloading hopper 41 can be discharged more smoothly along the unloading chute 42 into the crane hoisting tank 200.

[0033] The underground transfer system of the present application also includes a central control system, which can control the transport vehicle 3 to stop moving under the feed pit 43, wait for the loading to be completed, and then continue to drive the transport vehicle 3 to move along the transport track 2, and stop at the selected discharge channel 14 and automatically pour concrete into the unloading device 4, and then continue to move along the transport track 2.

[0034] The implementation principle of the underground transfer system for dam concrete of the present application is as follows: an underground tunnel 1 is excavated underground so that concrete can be transported from the underground tunnel 1. On the one hand, the underground tunnel 1 is warm in winter and cool in summer, and has a good moisturizing effect, which reduces the impact on the mixing quality of concrete during transportation; on the other hand, it can realize traffic diversion. Since the transportation volume of concrete is large, it occupies a long time on the road or driving tunnel 400. The establishment of the underground tunnel 1 can slow down the traffic flow on the road and driving tunnel 400, so that other materials can be transported to the construction site more conveniently; on the third hand, the underground tunnel 1 can be used to transport concrete to the construction site. A supporting equipment room for the dam 100 is usually designed at the dam shoulder 300. After the equipment room is built in the later stage, the space at the dam shoulder 300 is reduced, which makes the operating space of the dump truck or the mixer truck smaller, which is not conducive to the unloading of concrete and easily causes traffic congestion. The construction of the underground tunnel 1 can alleviate this problem; finally, during the construction stage of the dam 100, the underground tunnel 1 can be used as a concrete transportation channel. After the construction of the dam 100 is completed, the underground tunnel 1 can also be used as a permanent maintenance channel, or as a grouting tunnel, cable tunnel, and line field connection tunnel for the dam 100.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 dam concrete underground transfer system, characterized by: The underground tunnel (1) comprises a straight section (11) and a connecting section (12), the straight section (11) connects the mixing station (600) and the dam shoulder (300) in a straight line, and the connecting section (12) and the straight section (11) form an annular channel.

2. The underground dam concrete transfer system according to claim 1, characterized in that: The connecting section (12) includes a discharge section (13), the discharge section (13) extends along the length direction of the dam shoulder (300), and the discharge section (13) is provided with a plurality of discharge channels (14), and the discharge channels (14) are connected to the material taking platform (500).

3. The underground dam concrete transfer system according to claim 2, characterized in that: A transport track (2) is provided throughout the length of the underground tunnel (1), a transport vehicle (3) runs on the transport track (2), and a discharge device (4) is provided at each of the discharge channels (14), and the transport vehicle (3) can discharge at the discharge device (4).

4. The underground dam concrete transfer system according to claim 3, characterized in that: The transport track (2) is a circular track.

5. The underground dam concrete transfer system according to claim 3, characterized in that: The unloading device (4) comprises a unloading hopper (41) and a unloading chute (42) which are interconnected. The unloading chute (42) is arranged at an angle, and the output port of the unloading chute (42) is aligned with the cable crane hanging pot (200).

6. The underground dam concrete transfer system according to claim 3, characterized in that: A feed shaft (43) is provided at the entrance of the underground tunnel (1), wherein the upper end of the feed shaft (43) is aligned with the discharge port of the mixing station (600), and the lower end is aligned with the transport vehicle (3).

7. The underground dam concrete transfer system according to claim 1, characterized in that: The excavation height of the underground tunnel (1) is 1.5~1.8m, and the excavation width is 1.5~1.8m.

8. The underground dam concrete transfer system according to claim 1, characterized in that: The top wall and side walls of the underground tunnel (1) need to be supported by mesh spraying.

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