Maintenance channel arrangement structure of middle-layer drainage gallery in first-stage water diversion vertical shaft
By designing the inclined connection between the middle-level drainage corridor, transition section and the geological cave reconstruction section, combined with the utilization of the tail-tuning traffic hole, the drainage problem when the geological cave entrance is lower than the water level is solved, and the long-term operation of the middle-level drainage corridor is achieved The layout of maintenance channels and water emissions during the period save investment.
Patent Information
- Application Number
- CN202323466829.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-19
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-12-19
AI Technical Summary
In water conservancy and hydropower projects, when the entrance of the geological exploration hole is lower than the water level in the reservoir, it is impossible to use the geological exploration hole to convert it into a middle-level drainage corridor inspection channel in the first-level water diversion shaft, resulting in the inability to effectively drainage and affect the normal operation of the project.
A maintenance channel layout structure was designed, including a middle-level drainage corridor, transition section and geological cave reconstruction section. The middle-level drainage corridor and geological cave reconstruction section were connected through the gradual inclination of the transition section, and the tail-tuning traffic tunnel branch and The main hole of the traffic tunnel is discharged to ensure that the water can be discharged from the inside of the tunnel to the outside of the tunnel, and to realize the layout of maintenance channels during long-term operation.
When the geological exploration hole is lower than the water level in the reservoir, the effective layout and water discharge of the middle-level drainage corridor are achieved, ensuring the passage of maintenance channels during long-term operation, saving investment costs, and making use of the built tail Adjust traffic tunnels to discharge water.
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Figure CN222161156U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of water conservancy and hydropower engineering, and in particular to a maintenance channel arrangement structure of a middle-layer drainage gallery in a primary water diversion shaft. Background Art
[0002] With the development of the times and the great progress of construction machinery, more and more primary water diversion shafts are used in water conservancy and hydropower projects. According to geological conditions and other factors, a considerable part of the internal lining of the primary shaft adopts steel plates. The steel plate lining has very good anti-seepage ability, but a drainage corridor needs to be set up to reduce the external water outside the steel lining. The drainage corridor of the primary shaft is divided into a middle drainage corridor and a lower drainage corridor. Among them, most of the middle drainage corridors use the early geological exploration holes as construction channels. At the same time, the geological exploration holes are modified and expanded to form a permanent traffic channel in the later stage. The entrance of the geological exploration hole is often located above the water surface in the reservoir and is connected to the hole by a permanent road. There is a constraint factor in this arrangement, that is, the height of the hole of the early geological exploration hole needs to be higher than the water level of the water storage in the reservoir in the future. If it is lower than the water level of the water storage in the reservoir, it will cause the water in the reservoir to flow back into the hole, which will flood the middle drainage corridor. This makes the conventional arrangement form unsuitable for the situation where the hole of the geological exploration hole is low. Therefore, if the entrance of the geological exploration cave is lower than the water level in the reservoir, it is impossible to use the geological exploration cave to be converted into an inspection channel for the middle-level drainage corridor in the first-level water diversion shaft. Currently, there are still deficiencies in the research on this situation. Utility Model Content
[0003] An embodiment of the present application provides a maintenance channel arrangement structure for a middle-level drainage gallery in a primary water diversion shaft. The maintenance channel arrangement structure can arrange a channel for the middle-level drainage gallery to achieve the purpose of maintenance during long-term operation. In addition, the water collected inside the middle-level drainage gallery can be discharged from the cave to the outside of the cave.
[0004] The maintenance channel arrangement structure provided in the embodiment of the present application includes: a middle-layer drainage gallery, a transition section and a geological cave reconstruction section, wherein the transition section has an upstream side and a downstream side in the extension direction, the upstream side gradually slopes downward toward the downstream side, and the slope is not less than 2%, the upstream side of the transition section is connected with the middle-layer drainage gallery, the downstream side of the transition section is connected with the geological cave reconstruction section, the middle-layer drainage gallery gradually slopes downward toward the upstream side of the transition section, and the slope is greater than the slope of the transition section;
[0005] A branch tunnel of the tail-adjustment traffic tunnel and a main tunnel of the tail-adjustment traffic tunnel, wherein the branch tunnel of the tail-adjustment traffic tunnel is connected to the geological exploration cave reconstruction section and the main tunnel of the tail-adjustment traffic tunnel, and the geological exploration cave reconstruction section, the branch tunnel of the tail-adjustment traffic tunnel and the main tunnel of the tail-adjustment traffic tunnel are gradually inclined downward, and the inclination gradient is not less than 2%;
[0006] A geological exploration cave is connected to the geological exploration cave reconstruction section.
[0007] In addition, the maintenance channel arrangement structure provided in the embodiment of the present application may also have the following additional technical features:
[0008] In an optional solution, the water inside the middle drainage corridor flows through the transition section, the geological exploration cave reconstruction section, the branch tunnel of the tail-adjustment traffic tunnel and the main tunnel of the tail-adjustment traffic tunnel in sequence before flowing out.
[0009] In an optional scheme, the middle-level drainage corridor includes a transverse tunnel and a longitudinal tunnel, the transverse tunnel extends along the length direction of the middle-level drainage corridor, and the number of the transverse tunnels is multiple; the number of the longitudinal tunnels is at least two, and at least two of the longitudinal tunnels connect the multiple transverse tunnels.
[0010] In an optional solution, the shape and cross-sectional area of the geological exploration cave reconstruction section are the same as the shape and cross-sectional area of the branch tunnel of the tail traffic tunnel, and the geological exploration cave reconstruction section is formed by expanding part of the geological exploration cave.
[0011] In an optional scheme, the cross-section of the middle-level drainage corridor is a city gate tunnel type, and a plurality of first vertical drainage holes are arranged at intervals along the length direction on the top of the middle-level drainage corridor, and a plurality of second vertical drainage holes are arranged at the bottom of the cavern of the middle-level drainage corridor, and the second vertical drainage holes are arranged at intervals along the length direction of the middle-level drainage corridor.
[0012] In an optional solution, the top of the middle drainage gallery is an arc surface, and the central angle of the arc surface is 106°;
[0013] The bottom of the cavern of the middle drainage gallery is paved with pavement concrete, and drainage ditches are arranged on both sides of the pavement concrete in the width direction.
[0014] In an optional solution, a cast iron cover plate is provided in the cavern of the middle drainage gallery, and the cast iron cover plate covers the entrance of the second vertical drainage hole.
[0015] In an optional scheme, the cross-section of the branch tunnel of the tail-adjustment traffic tunnel and the main tunnel of the tail-adjustment traffic tunnel is a city gate tunnel type, and the top of the branch tunnel of the tail-adjustment traffic tunnel and the main tunnel of the tail-adjustment traffic tunnel is an arc surface, and the central angle of the arc surface is 136°.
[0016] In an optional solution, the bottoms of the branch tunnels of the tail-adjustment traffic tunnel and the main tunnel of the tail-adjustment traffic tunnel are paved with pavement concrete, and drainage ditches are provided on both sides of the pavement concrete in the width direction.
[0017] In an optional solution, the height of the pavement concrete is 30 cm and the width of the drainage ditch is 30 cm.
[0018] The beneficial effects of the embodiments of the present application are:
[0019] The overall layout of the maintenance channel arrangement structure in the embodiment of the present application is simple. When the entrance of the geological exploration cave is lower than the normal water level in the reservoir, a channel is arranged for the middle-level drainage corridor to achieve the purpose of long-term operation period maintenance. In addition, the water collected inside the middle-level drainage corridor can be discharged out of the cave in time. Most of the maintenance channel tunnel sections of the middle-level drainage corridor utilize the existing tail adjustment traffic tunnel, thereby saving investment.
[0020] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 A schematic diagram of the structure of the maintenance channel arrangement structure provided in the present application in a specific embodiment;
[0022] Figure 2 for Figure 1 Sectional view of the layout structure of the central maintenance channel;
[0023] Figure 3 A schematic diagram of the cross-sectional structure of a middle-level drainage gallery provided in the present application in a specific embodiment;
[0024] Figure 4 for Figure 3 The base plate detail drawing of the middle-level drainage gallery;
[0025] Figure 5 A schematic diagram of the cross-sectional structure of a branch tunnel of a tail-adjustment traffic tunnel or a main tunnel of a tail-adjustment traffic tunnel provided in this application.
[0026] Figure numerals: middle drainage corridor 1, transverse tunnel 11, longitudinal tunnel 12, first vertical drainage hole 13, second vertical drainage hole 14, transition section 2, geological exploration cave reconstruction section 3, tail-adjustment traffic tunnel branch tunnel 4, tail-adjustment traffic tunnel main tunnel 5, geological exploration cave 6, pavement concrete 7, drainage ditch 8, cast iron cover plate 9.
[0027] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION
[0028] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.
[0029] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0030] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.
[0031] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.
[0032] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.
[0033] like Figure 1-5 As shown, the embodiment of the present application provides a maintenance channel arrangement structure for the middle-layer drainage corridor in the first-level water diversion shaft. The advantage of the maintenance channel arrangement structure is that when the entrance of the geological exploration cave is lower than the water level in the reservoir, by reconstructing the original geological exploration cave, building a new tunnel and connecting with the existing tail-adjustment traffic tunnel, a channel can be arranged for the middle-layer drainage corridor to achieve the purpose of long-term operation period maintenance. In addition, the water collected inside the middle-layer drainage corridor can be discharged from the cave to the outside. Specifically including: middle-layer drainage corridor 1, transition section 2, geological exploration cave reconstruction section 3, tail-adjustment traffic tunnel branch tunnel 4, tail-adjustment traffic tunnel main tunnel 5 and geological exploration cave 6, wherein the transition section 2 has an upstream side and a downstream side in the extension direction, and the upstream side gradually slopes downward to the downstream side, and the inclination slope is not less than 2%.
[0034] The upstream side of the transition section 2 is connected with the middle-level drainage corridor 1, and the downstream side of the transition section 2 is connected with the geological exploration cave reconstruction section 3. The middle-level drainage corridor 1 gradually slopes downward toward the upstream side of the transition section 2, and the inclination slope is greater than the inclination slope of the transition section 2; generally speaking, the length of the transition section 2 is 10m; the tail-adjustment traffic tunnel branch tunnel 4 connects the geological exploration cave reconstruction section 3 and the tail-adjustment traffic tunnel main tunnel 5, and the geological exploration cave reconstruction section 3, the tail-adjustment traffic tunnel branch tunnel 4 and the tail-adjustment traffic tunnel main tunnel 5 gradually slope downward, and the inclination slope is not less than 2%; the geological exploration cave 6 is connected with the geological exploration cave reconstruction section 3.
[0035] In a specific embodiment, the inclination slope of the transition section 2, the geological exploration cave reconstruction section 3, the tail-adjustment traffic tunnel branch tunnel 4 and the tail-adjustment traffic tunnel main tunnel 5 is 2%, while the inclination slope of the middle-level drainage corridor 1 is 3.41%. This can facilitate the water in the middle-level drainage corridor 1 to flow into the transition section 2. After the maintenance channel layout structure is put into use, the water inside the middle-level drainage corridor 1 flows through the transition section 2, the geological exploration cave reconstruction section 3, the tail-adjustment traffic tunnel branch tunnel 4 and the tail-adjustment traffic tunnel main tunnel 5 in turn before flowing out.
[0036] like Figure 1 As shown, in a specific embodiment, the middle drainage corridor 1 includes a transverse tunnel 11 and a longitudinal tunnel 12. The transverse tunnel 11 extends along the length direction of the middle drainage corridor 1, and the number of transverse tunnels 11 is multiple; the number of longitudinal tunnels 12 is at least two, and at least two longitudinal tunnels 12 connect multiple transverse tunnels 11. In the figure, the number of transverse tunnels 11 is 3, and the number of longitudinal tunnels 12 is 2. The inclination slope of the three transverse tunnels 11 is the inclination slope of the middle drainage corridor 1. After the longitudinal tunnel 12 is connected with the transverse tunnel 11, the water in the longitudinal tunnel 12 can be gathered and flow into the transverse tunnel 11. It should be noted that the number of transverse tunnels 11 and longitudinal tunnels 12 can be preset according to actual needs, and this article does not make specific restrictions on this.
[0037] like Figure 1-2 As shown, in a specific embodiment, the shape and cross-sectional area of the geological exploration cave reconstruction section 3 are the same as the shape and cross-sectional area of the tail traffic tunnel branch tunnel 4, and the geological exploration cave reconstruction section 3 is formed by expanding part of the geological exploration cave 6. This can reduce the construction cost and improve the utilization rate of the geological exploration cave 6.
[0038] like Figure 3-4 As shown, in a specific embodiment, the cross section of the middle drainage gallery 1 is a gate hole type, and a plurality of first vertical drainage holes 13 are arranged at intervals along the length direction on the top of the middle drainage gallery 1. The size of the first vertical drainage hole 13 is: Length 50m, spacing 6m; a plurality of second vertical drainage holes 14 are arranged at the bottom of the cavern of the middle drainage gallery 1, and the second vertical drainage holes 14 are arranged at intervals along the length direction of the middle drainage gallery 1. The size of the second vertical drainage holes 14 is: Specifications Length 30m, spacing 6m.
[0039] In addition, the top of the middle drainage gallery 1 is an arc surface, and the central angle of the arc surface is 106°; the bottom of the cavern of the middle drainage gallery 1 is paved with pavement concrete 7, and drainage ditches 8 are arranged on both sides of the width direction of the pavement concrete 7. A cast iron cover plate 9 is arranged in the cavern of the middle drainage gallery 1, and the cast iron cover plate 9 covers the entrance of the second vertical drainage hole 14, D = 14cm. The width of the middle drainage gallery 1 is 2.5m, and the height is 3.0m.
[0040] like Figure 5 As shown, in a specific embodiment, the cross-section of the branch tunnel 4 of the tail-adjustment traffic tunnel and the main tunnel 5 of the tail-adjustment traffic tunnel is a city gate tunnel type, and the top of the branch tunnel 4 of the tail-adjustment traffic tunnel and the main tunnel 5 of the tail-adjustment traffic tunnel is an arc surface, and the center angle of the arc surface is 136°. The bottom of the cavern of the branch tunnel 4 of the tail-adjustment traffic tunnel and the main tunnel 5 of the tail-adjustment traffic tunnel is paved with pavement concrete 7, and drainage ditches 8 are arranged on both sides of the width direction of the pavement concrete 7. The width of the branch tunnel 4 of the tail-adjustment traffic tunnel and the main tunnel 5 of the tail-adjustment traffic tunnel is 4.9m, the height is 5.6m, the thickness of the pavement concrete 7 at the bottom of the cavern is 30cm, and the width of the drainage ditches 8 on both sides is 30cm.
[0041] The overall layout of the maintenance channel arrangement structure in the embodiment of the present application is simple. When the entrance of the geological exploration cave is lower than the normal water level in the reservoir, a channel is arranged for the middle-level drainage corridor to achieve the purpose of long-term operation period maintenance. In addition, the water collected inside the middle-level drainage corridor can be discharged out of the cave in time. Most of the maintenance channel tunnel sections of the middle-level drainage corridor utilize the existing tail adjustment traffic tunnel, thereby saving investment.
[0042] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A maintenance channel arrangement structure for the middle drainage gallery in the primary water diversion shaft, characterized in that: include: A middle-layer drainage gallery, a transition section and a geological cave reconstruction section, wherein the transition section has an upstream side and a downstream side in the extension direction, the upstream side gradually slopes downward toward the downstream side, and the slope is not less than 2%, the upstream side of the transition section is connected with the middle-layer drainage gallery, the downstream side of the transition section is connected with the geological cave reconstruction section, and the middle-layer drainage gallery gradually slopes downward toward the upstream side of the transition section, and the slope is greater than the slope of the transition section; A branch tunnel of the tail-adjustment traffic tunnel and a main tunnel of the tail-adjustment traffic tunnel, wherein the branch tunnel of the tail-adjustment traffic tunnel is connected to the geological exploration cave reconstruction section and the main tunnel of the tail-adjustment traffic tunnel, and the geological exploration cave reconstruction section, the branch tunnel of the tail-adjustment traffic tunnel and the main tunnel of the tail-adjustment traffic tunnel are gradually inclined downward, and the inclination gradient is not less than 2%; A geological exploration cave is connected to the geological exploration cave reconstruction section.
2. The inspection channel arrangement structure of the middle drainage gallery in the primary water diversion shaft according to claim 1 is characterized in that: The water inside the middle drainage corridor flows through the transition section, the geological exploration cave reconstruction section, the branch tunnel of the tail-adjustment traffic tunnel and the main tunnel of the tail-adjustment traffic tunnel in sequence and then flows out.
3. The maintenance channel arrangement structure of the middle drainage gallery in the primary water diversion shaft according to claim 1 or 2, characterized in that: The middle-layer drainage corridor includes a transverse tunnel and a longitudinal tunnel. The transverse tunnel extends along the length direction of the middle-layer drainage corridor, and the number of the transverse tunnels is multiple; the number of the longitudinal tunnels is at least two, and at least two of the longitudinal tunnels are connected to the multiple transverse tunnels.
4. The inspection channel arrangement structure of the middle drainage gallery in the primary water diversion shaft according to claim 3 is characterized in that: The shape and cross-sectional area of the geological exploration cave reconstruction section are the same as those of the branch tunnel of the tail adjustment traffic tunnel, and the geological exploration cave reconstruction section is formed by expanding part of the geological exploration cave.
5. The maintenance channel arrangement structure of the middle drainage gallery in the primary water diversion shaft according to claim 1, 2 or 4, characterized in that: The cross-section of the middle-level drainage corridor is a city gate tunnel type. A plurality of first vertical drainage holes are arranged at intervals along the length direction at the top of the middle-level drainage corridor. A plurality of second vertical drainage holes are arranged at intervals along the length direction of the middle-level drainage corridor at the bottom of the cavern of the middle-level drainage corridor.
6. The inspection channel arrangement structure of the middle drainage gallery in the primary water diversion shaft according to claim 5 is characterized in that: The top of the middle drainage gallery is an arc surface, and the central angle of the arc surface is 106°; The bottom of the cavern of the middle drainage gallery is paved with pavement concrete, and drainage ditches are arranged on both sides of the pavement concrete in the width direction.
7. The inspection channel arrangement structure of the middle drainage gallery in the primary water diversion shaft according to claim 6 is characterized in that: A cast iron cover plate is arranged in the cavern of the middle drainage gallery, and the cast iron cover plate covers the entrance of the second vertical drainage hole.
8. The inspection channel arrangement structure of the middle drainage gallery in the primary water diversion shaft according to claim 6 is characterized in that: The cross-sections of the branch tunnel of the tail-adjustment traffic tunnel and the main tunnel of the tail-adjustment traffic tunnel are of the city gate tunnel type, and the tops of the branch tunnel of the tail-adjustment traffic tunnel and the main tunnel of the tail-adjustment traffic tunnel are arc surfaces, and the central angle of the arc surfaces is 136°.
9. The inspection channel arrangement structure of the middle drainage gallery in the primary water diversion shaft according to claim 8 is characterized in that: The bottoms of the branch tunnels of the tail-adjustment traffic tunnel and the main tunnel of the tail-adjustment traffic tunnel are paved with pavement concrete, and drainage ditches are arranged on both sides of the pavement concrete in the width direction.
10. The maintenance channel arrangement structure of the middle drainage gallery in the primary water diversion shaft according to any one of claims 6 to 9, characterized in that: The height of the pavement concrete is 30 cm, and the width of the drainage ditch is 30 cm.