Dam-break prevention lake water flow regulating system

Abstract

The application provides a dam-break-preventing water flow regulating system for a barrier lake, which comprises an M river and a T river, a dam is arranged at the downstream of the M river, a water regulating open channel is arranged between the M river and the T river, the water regulating open channel is arranged at an altitude between the M river and the T river, a reinforced concrete water regulating tunnel and a pressure steel pipe are further arranged, the two ends of the reinforced concrete water regulating tunnel are respectively connected with the M river and the water regulating open channel, the two ends of the pressure steel pipe are respectively connected with the water regulating open channel and the T river, and a water inlet working gate system and a water outlet working gate system are further arranged at the two ends of the reinforced concrete water regulating tunnel, so that the problem that the barrier lake formed by the earthquake has no drainage outlet and the barrier dam collapses is solved.

Description

Technical Field

[0001] This invention relates to the field of landslide dam prevention and control, and in particular to a water flow regulation system for landslide dam prevention and control. Background Technology

[0002] Due to geological processes, an earthquake occurred near the M River, causing a landslide that formed Dam I, blocking the river channel and creating Lake S. Because there is no drainage outlet, the water level of Lake S continues to rise at a rate of tens of centimeters per year. Currently, the deepest point of the lake has reached 500 meters. If water is not diverted from Lake S, its water volume will continue to increase. It is estimated that in 85 to 105 years, it may overflow through the lowest point of Dam I. The overflow could erode the dam, posing a risk of its collapse.

[0003] One solution is to build a hydroelectric power station at Lake S to drain the accumulated water and generate electricity. However, due to the short formation time of the landslide dam and the unstable geological structure, the foundation for building a hydroelectric power station is not available. Summary of the Invention

[0004] This invention provides a water flow regulation system for preventing landslide dam failure in landslide-dammed lakes, which solves the problem of landslide dams collapsing due to the lack of drainage outlets in earthquake-formed landslide-dammed lakes.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a landslide dam prevention and control water flow regulation system, including the M River and the T River, a dam is set at the downstream of the M River, a water diversion channel is set between the M River and the T River, the elevation of the water diversion channel is between the M River and the T River, a reinforced concrete water diversion tunnel and a pressure steel pipe are also provided, the two ends of the reinforced concrete water diversion tunnel are connected to the M River and the water diversion channel respectively, the two ends of the pressure steel pipe are connected to the water diversion channel and the T River respectively, and the two ends of the reinforced concrete water diversion tunnel are also equipped with an inlet working gate system and an outlet working gate system respectively.

[0006] In the preferred embodiment, a hydropower plant is located at the lower end of the pressure steel pipe, and a generator set is installed inside the hydropower plant, which is connected to the pressure steel pipe.

[0007] In the preferred embodiment, a spillway is provided at the upper end of the dam, and a venting tunnel is provided near the bottom of the dam, with a venting tunnel working gate system installed inside the venting tunnel.

[0008] In the preferred embodiment, an emergency maintenance gate system for the venting tunnel is also provided on one side of the venting tunnel working gate system.

[0009] In the preferred embodiment, an emergency maintenance gate system for the intake is also provided on one side of the working gate system for the intake in the reinforced concrete water diversion tunnel.

[0010] In the preferred embodiment, an emergency maintenance gate system for the outlet is also provided on one side of the working gate system for the outlet inside the reinforced concrete water diversion tunnel.

[0011] In the preferred embodiment, the bottom of the water diversion channel is provided with a high riverbed section and a low riverbed section. The water diversion channel is provided with a first branch and a second branch. The high riverbed section is connected to the first branch, and the low riverbed section is connected to the second branch. The downstream of the second branch is connected to the pressure steel pipe, and the downstream of the first branch is connected to the water storage weir. A drain hole is also provided, and the bottom of the water storage weir is connected to the T River through the drain hole.

[0012] In the preferred embodiment, a sliding channel is provided in the high riverbed section of the first branch connecting to the reservoir weir. A weir gate that can float up and down is provided in the sliding channel. The weir gate has a hollow structure. The weir gate floats up to change the minimum water intake height of the reservoir weir. A connecting channel is also provided. One end of the connecting channel is connected to the reservoir weir, and the other end of the connecting channel is connected to the sliding channel.

[0013] In a preferred embodiment, a horizontally swingable diversion baffle gate is provided at the fork between the first branch and the second branch.

[0014] In the preferred embodiment, the first branch is provided with a portal frame, and a liftable lifting screw is provided in the center of the portal frame. The lower end of the lifting screw is connected to the weir gate. The lifting screw includes a smooth rod section, and a screw section is connected to the upper end of the smooth rod section. A nut seat is provided on the portal frame, and the screw section and the nut seat are threadedly connected. A large end is provided at the lower end of the smooth rod section. A hollow inner cylinder is provided inside the weir gate. The smooth rod section and the hollow inner cylinder are slidably connected. A stop end sleeve is provided at the upper end of the hollow inner cylinder. The stop end sleeve is used to stop the large end.

[0015] The beneficial effects of this invention are as follows: A water diversion tunnel and an open channel are constructed, which serve as intermediate hubs to divert water from the M River upstream of Lake S into the nearby T River, reducing the inflow of the M River into Lake S and lowering the risk of dam failure; a hydroelectric power station is constructed at the junction of the open channel and the T River, making rational use of natural resources; the open channel is constructed as a first and second branch with high and low riverbeds, and equipped with a reservoir weir, ensuring the normal flow of the open channel while mitigating the pressure of surged water flow during the flood season. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the present invention.

[0018] Figure 2 This is a schematic diagram of the horizontal layout of the present invention.

[0019] Figure 3 This is a structural diagram of the venting cavity of the present invention.

[0020] Figure 4 This is a diagram showing the direction of the water diversion channel of the present invention.

[0021] Figure 5 This is a schematic diagram of the flow cross-section of the water diversion channel of the present invention.

[0022] Figure 6 This is a schematic diagram of the inlet of the water storage weir of the present invention.

[0023] Figure 7 This is a schematic diagram of the weir gate lifting mechanism of the present invention.

[0024] Figure 8 This is a structural diagram of the internal structure of the weir gate and the lifting screw of the present invention.

[0025] In the diagram: 1. River M; 2. Spillway; 3. Dam; 4. Drainage tunnel; 5. Intake emergency maintenance gate system; 6. Intake working gate system; 7. Reinforced concrete water diversion tunnel; 8. Outlet emergency maintenance gate system; 9. Outlet working gate system; 10. Water diversion open channel; 1001. First branch; 1002. Second branch; 1003. High riverbed section; 1004. Low riverbed section; 11. Pressure steel pipe; 12. Pressure steel pipe anchor; 13. Hydropower station 13. Plant; 14. Generator set; 15. T River; 16. Drainage tunnel accident maintenance gate system; 17. Drainage tunnel working gate system; 18. Water storage weir; 19. Drainage tunnel; 20. Weir gate; 2001. Sliding track; 2002. Connecting passage; 21. Diversion baffle gate; 22. Gantry frame; 23. Lifting screw; 2301. Screw section; 2302. Large end; 2303. Threaded nut seat; 2304. Hollow inner cylinder; 25. Stop end sleeve. Detailed Implementation

[0026] like Figure 1-8 A landslide dam prevention and control system for regulating water flow includes River M1 and River T15. A dam 3 is located downstream of River M1. A water diversion channel 10 is located between River M1 and River T15. The elevation of the water diversion channel 10 is between River M1 and River T15. A reinforced concrete water diversion tunnel 7 and a pressure steel pipe 11 are also provided. The two ends of the reinforced concrete water diversion tunnel 7 are connected to River M1 and the water diversion channel 10, respectively. The two ends of the pressure steel pipe 11 are connected to the water diversion channel 10 and River T15, respectively. An inlet working gate system 6 and an outlet working gate system 9 are also provided at both ends of the reinforced concrete water diversion tunnel 7.

[0027] In the preferred embodiment, a hydropower plant 13 is provided at the lower end of the pressure steel pipe 11, and a generator set 14 is provided inside the hydropower plant 13, which is connected to the pressure steel pipe 11.

[0028] In the preferred embodiment, a spillway 2 is provided at the upper end of the dam 3, and a venting tunnel 4 is provided near the bottom of the dam 3. A venting tunnel working gate system 17 is provided inside the venting tunnel 4.

[0029] A dam 3 is constructed on River M1 to impound water in River M1. A spillway 2 is designed on dam 3, along with dam maintenance, flushing, and drainage tunnels 4. Drainage tunnel 4 is equipped with a drainage tunnel emergency maintenance gate system 16 and a working gate system 17. A reinforced concrete water diversion tunnel 7 is excavated and constructed from one side of River M1 towards the other side of River T15. An intake emergency maintenance gate system 5 and an intake working gate system 6 are installed at the inlet of the water diversion tunnel 7, and an outlet emergency maintenance gate system is installed at the outlet of the water diversion tunnel 7. The system includes a gate system 8 and an outlet working gate system 9. A water diversion channel 10 is constructed at the outlet of tunnel 7, with a pressure steel pipe 11 installed at the end of the channel 10. A pier 12 is installed on the pressure steel pipe 11. The pressure steel pipe passes through the hydropower plant 13, which houses a generator set 14. The tailwater of the generator set 14 flows to the T River 15. Thus, after the dam 3 is completed, the water from the M River 1 is stored and diverted to the T River 15 via the reinforced concrete water diversion tunnel 7, the water diversion channel 10, the pressure steel pipe 11, and the generator set 14. The flow regulation system is ingeniously designed to reduce the risk of dam failure in Lake S. It diverts water from the M River 1 upstream of Lake S into the T River 15, reducing the inflow of the M River into Lake S, decreasing the water volume stored in Lake S, thereby lowering the water level of Lake S and reducing the risk of dam failure in Lake S.

[0030] In the preferred embodiment, an emergency maintenance gate system 16 for the venting tunnel is also provided on one side of the venting tunnel working gate system 17 inside the venting tunnel 4.

[0031] In the preferred embodiment, an intake emergency maintenance gate system 5 is also provided on one side of the intake working gate system 6 inside the reinforced concrete water diversion tunnel 7.

[0032] In the preferred embodiment, an emergency maintenance gate system 8 is also provided on one side of the outlet working gate system 9 inside the reinforced concrete water diversion tunnel 7.

[0033] Since the intake emergency maintenance gate system 5, the intake working gate system 6, the outlet emergency maintenance gate system 8, the outlet working gate system 9, and the venting tunnel emergency maintenance gate system 16 are located inside the tunnel, they adopt an upward-opening gate and are lifted from above by a winch. Since the venting tunnel working gate system 17 is located at the port of the venting tunnel 4, it can adopt a tilting gate system.

[0034] In the preferred embodiment, the water diversion channel 10 has a high riverbed section 1003 and a low riverbed section 1004 at its bottom end. The water diversion channel 10 has a first branch 1001 and a second branch 1002. The high riverbed section 1003 is connected to the first branch 1001, and the low riverbed section 1004 is connected to the second branch 1002. The downstream of the second branch 1002 is connected to the pressure steel pipe 11, and the downstream of the first branch 1001 is connected to the water storage weir 18. A drain hole 19 is also provided, and the bottom of the water storage weir 18 is connected to the T River 15 through the drain hole 19.

[0035] Water diverted from the reinforced concrete water diversion tunnel 7 enters the water diversion channel 10. If the flow rate is low, it accumulates above the low riverbed section 1004 and flows directly into the T River 15 via the second branch 1002. When the flood season arrives in the M River 1, the water flow rate into the water diversion channel 10 increases, and the water level in the water diversion channel 10 rises. Part of the water flows into the T River 15 via the second branch 1002, and the other part flows into the reservoir 18 via the first branch 1001 for storage. After the flood season peak, the water is discharged into the T River 15 through the drainage tunnel 19, which can buffer the flow pressure of the T River 15.

[0036] In the preferred embodiment, a sliding channel 2001 is provided in the high riverbed section 1003 at the connection point between the first branch 1001 and the reservoir 18. A floating gate 20 is provided in the sliding channel 2001. The gate 20 has a hollow structure. The gate 20 floats up to change the minimum water inlet height of the reservoir 18. A connecting channel 2002 is also provided. One end of the connecting channel 2002 is connected to the reservoir 18, and the other end of the connecting channel 2002 is connected to the sliding channel 2001.

[0037] Since the weir gate 20 is a hollow structure, when the water in the reservoir 18 reaches a certain height, it enters the lower end of the weir gate 20 in the sliding channel 2001 through the connecting channel 2002. The buoyancy of the weir gate 20 increases and it is lifted up from the bottom of the first branch 1001, blocking the water and preventing it from continuing to enter the reservoir 18.

[0038] In a preferred embodiment, a horizontally swingable diversion baffle gate 21 is provided at the fork between the first branch 1001 and the second branch 1002.

[0039] The diversion baffle gate 21 can adjust the width of the waterway of the first branch 1001 or the second branch 1002, thereby actively controlling the flow rate.

[0040] In the preferred embodiment, the first branch 1001 is provided with a portal frame 22, and the portal frame 22 is provided with a liftable lifting screw 23 in the center. The lower end of the lifting screw 23 is connected to the weir gate 20. The lifting screw 23 includes a smooth rod section 2301, and a screw section 2302 is connected to the upper end of the smooth rod section 2301. The portal frame 22 is provided with a threaded nut seat 2304. The screw section 2302 is threadedly connected to the threaded nut seat 2304. The lower end of the smooth rod section 2301 is provided with a large end 2303. The weir gate 20 is provided with a hollow inner cylinder 24. The smooth rod section 2301 is slidably connected to the hollow inner cylinder 24. The upper end of the hollow inner cylinder 24 is provided with a stop end sleeve 25, which is used to stop the large end 2303.

[0041] The screw section 2302 can be a spline screw, and the gantry frame 22 is also equipped with a geared drive motor. The shaft end of the geared drive motor drives the upper spline of the screw section 2302 to rotate through a synchronous belt or chain drive, thereby driving the lifting screw 23 to rotate spirally and move up and down.

[0042] Two U-shaped openings are installed opposite each other inside the sliding track 2001, which hold the two sides of the weir gate 20 as a guide structure for its vertical movement.

[0043] Initially, the weir gate 20 rises due to the buoyancy of the water. At this time, the hollow inner cylinder 24 slides relative to the smooth rod section 2301. When the weir gate 20 rises to a certain height, the large end 2303 abuts against the bottom of the hollow inner cylinder 24. If it is necessary to clean the silt in the sliding track 2001, the reduction drive motor on the gantry frame 22 works, causing the lifting screw 23 to spiral upward and move the large end 2303 to abut against the stop end sleeve 25. Then the weir gate 20 is pulled up and disengaged from the sliding track 2001. The water flows into the sliding track 2001 and the connecting channel 2002, flushing the silt into the water storage weir 18.

[0044] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A landslide dam failure prevention and flow regulation system, characterized in that: Including M River (1) and T River (15), a dam (3) is set at the downstream of M River (1), a water diversion channel (10) is set between M River (1) and T River (15), the elevation of the water diversion channel (10) is between M River (1) and T River (15), a reinforced concrete water diversion tunnel (7) and a pressure steel pipe (11) are also set, the two ends of the reinforced concrete water diversion tunnel (7) are connected to M River (1) and water diversion channel (10) respectively, the two ends of the pressure steel pipe (11) are connected to water diversion channel (10) and T River (15) respectively, and the two ends of the reinforced concrete water diversion tunnel (7) are also equipped with an inlet working gate system (6) and an outlet working gate system (9) respectively. A hydropower plant (13) is located at the lower end of the pressure steel pipe (11). A generator set (14) is located inside the hydropower plant (13). The generator set (14) is connected to the pressure steel pipe (11). An emergency maintenance gate system (8) is also provided on one side of the outlet working gate system (9) inside the reinforced concrete water diversion tunnel (7). The water diversion channel (10) has a high riverbed section (1003) and a low riverbed section (1004) at its bottom. The water diversion channel (10) has a first branch (1001) and a second branch (1002). The high riverbed section (1003) is connected to the first branch (1001), and the low riverbed section (1004) is connected to the second branch (1002). The downstream of the second branch (1002) is connected to the pressure steel pipe (11), and the downstream of the first branch (1001) is connected to the water storage weir (18). There is also a drain hole (19). The bottom of the water storage weir (18) is connected to the T River (15) through the drain hole (19). The first branch (1001) is connected to the reservoir weir (18) in the high riverbed section (1003) with a sliding track (2001). The sliding track (2001) has a floating gate (20). The gate (20) has a hollow structure. The gate (20) floats up to change the minimum water intake height of the reservoir weir (18). There is also a connecting channel (2002). One end of the connecting channel (2002) is connected to the reservoir weir (18), and the other end of the connecting channel (2002) is connected to the sliding track (2001).

2. The landslide dam breakage prevention and flow regulation system according to claim 1, characterized in that: An emergency maintenance gate system (5) is also provided on one side of the working gate system (6) of the water inlet inside the reinforced concrete water diversion tunnel (7).

3. The landslide dam breakage prevention and flow regulation system according to claim 1, characterized in that: The first branch (1001) is provided with a portal frame (22), and the portal frame (22) is provided with a liftable lifting screw (23) in the center. The lower end of the lifting screw (23) is connected to the weir gate (20). The lifting screw (23) includes a smooth rod section (2301), and the upper end of the smooth rod section (2301) is connected to a screw section (2302). The portal frame (22) is provided with a nut seat (2304). The screw section (2302) and the nut seat (2304) are threaded together. The lower end of the smooth rod section (2301) is provided with a large end (2303). The weir gate (20) is provided with a hollow inner cylinder (24). The smooth rod section (2301) and the hollow inner cylinder (24) are slidably connected. The upper end of the hollow inner cylinder (24) is provided with a stop end sleeve (25). The stop end sleeve (25) is used to stop the large end (2303).

4. The landslide dam breakage prevention and flow regulation system according to claim 1 or 3, characterized in that: A horizontally swingable diversion baffle gate (21) is provided at the bifurcation point between the first branch (1001) and the second branch (1002).

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