Self-starting side slope siphon drainage device and method with stability and rapid flow guide

Abstract

The invention discloses a self-starting side slope siphon drainage device and method with stability and rapid flow guiding, and belongs to the technical field of side slope drainage engineering, a water inlet of a siphon drainage pipe is formed in the bottom of a pitching type drill hole and located below the underground water level, and a water outlet of the siphon drainage pipe is located in the lower portion of a closed water tank; the closed water tank is movably arranged in the sleeve box; a drain valve is mounted at the bottom of the closed water tank; a cross-shaped flow guide groove is formed in the bottom of the pouring jacket, and an automatic opening and closing device is mounted in the cross-shaped flow guide groove; the upper portion of the linear elastic device is connected with the four corners of the bottom of the water tank. The device can effectively prevent the siphon drainage pipe from losing efficacy due to too fast drainage, realizes rapid diversion drainage of the device, can also use the drained water for irrigation of surrounding farmland, meets the requirement of the slope for self-starting siphon drainage in the whole process, is also beneficial to sustainable utilization of water resources, and is green and economical in the whole process and easy to popularize. The adverse effect on the slope ecology cannot be caused.

Description

Technical Field

[0001] The present invention belongs to the technical field of slope drainage engineering, and in particular relates to a self-starting slope siphon drainage device and method having both stability and rapid diversion. Background Art

[0002] During the slope construction process, it is easy to encounter geological disasters such as landslides and collapses, which can cause heavy casualties and economic and property losses. Therefore, it is particularly important to reduce the possibility of slope instability. Among many geological disasters, rainfall is an important influencing factor. Therefore, it is necessary to reduce the adverse effects of rainfall on the slope. Lowering the groundwater level of the slope is one of the most economical and effective methods, and it plays a key role in the prevention and control of slope geological disasters.

[0003] Siphon drainage is a method of using the force generated by the height difference of the liquid level at the inlet and outlet of the siphon drainage pipe to promote the flow of liquid in the pipe to achieve the drainage effect. The siphon flow parameters are automatically controlled as the groundwater level changes on the slope. This method has been widely used in the management of slope geological disasters. However, due to the uninterrupted operation of the siphon drainage device, the groundwater level drops below the siphon drainage pipe, which will cause the siphon to stop flowing; the water tank is prone to tilting and tipping due to uneven force or external force during the compression and rebound process of the online elastic device, causing damage and failure of the device; in addition, the water tank in the siphon drainage device commonly used on the slope often adopts an external drainage pipe. When the drainage speed of the siphon drainage pipe is greater than that of the water tank drainage pipe, the water level in the water tank rises until it fills the water tank, which will directly affect the drainage efficiency of the entire siphon drainage system. Summary of the invention

[0004] The purpose of the present invention is to provide a self-starting slope siphon drainage device and method with both stability and rapid diversion in view of the above-mentioned deficiencies in the prior art, so as to solve the problems of low stability and low drainage efficiency of the existing slope siphon drainage system.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: In the first aspect, a self-starting slope siphon drainage device and method having both stability and rapid diversion, comprising a siphon drainage pipe, a casing, a closed water tank and a self-starting and closing device; The water inlet of the siphon drainage pipe is arranged at the bottom of the pitch-down borehole and is below the groundwater level, and the water outlet of the siphon drainage pipe is located at the lower part of the closed water tank; the closed water tank is movably arranged inside the casing, and a drain valve is installed at the bottom of the closed water tank; a "cross" guide groove is provided at the bottom of the casing, and a self-opening and closing device is installed in the middle of the "cross" guide groove; the bottom platform of the casing is fixedly connected to the lower part of the linear elastic device, and the upper part of the linear elastic device is connected to the four corners of the bottom of the water tank.

[0006] Furthermore, a filter is installed at the water inlet of the siphon drain pipe; the water inlet section and the water outlet section of the siphon drain pipe are connected by a telescopic hose.

[0007] Furthermore, the inner diameter of the telescopic hose is equal to the inner diameter of the siphon drain pipe, and the telescopic length of the telescopic hose is greater than the compression amount of the linear elastic device.

[0008] Furthermore, the casing is installed at the lower part of the slope or the foot of the slope, and sliders that slide with the closed water tank are fixed on both sides of the casing; the four corners of the bottom of the casing are platforms for connecting the linear elastic device.

[0009] Furthermore, the self-opening and closing device includes a conical plug, a rubber ring and a hollow circular tube with a hole; the hollow circular tube with a hole is installed in the middle of the "cross" guide groove at the bottom of the casing and is located directly below the drain valve; the top of the hollow circular tube with a hole is a conical plug, and the conical plug is covered with a rubber ring.

[0010] Furthermore, drainage pipes are installed at the openings of the "cross" guide grooves.

[0011] Furthermore, the compression amount of the linear elastic device is greater than or equal to the distance between the conical plug and the water outlet of the siphon drain pipe; the inner diameter of the perforated hollow circular tube is the same as the inner diameter of the siphon drain pipe, and the inner diameter of the perforated hollow circular tube is smaller than the size of the drain valve.

[0012] Furthermore, two outer walls of the closed water tank are installed with slide rails, and the slide rails are movably arranged on the sliders.

[0013] Furthermore, the drain valve is installed at the bottom of the closed water tank and is located directly below the water outlet of the siphon drain pipe; when the drain valve is closed, it is restricted by the limiter at the bottom of the closed water tank, and the size of the drain valve is larger than the inner diameter of the siphon drain pipe.

[0014] In the second aspect, a self-starting slope siphon drainage method with both stability and rapid diversion comprises the following steps: S1. Determine the position, drilling depth and inclination of the tilted borehole on the target slope according to the groundwater level; S2. The water inlet of the siphon drainage pipe is placed at the bottom of the pitch-down borehole, the water outlet is connected to the middle and lower part of the water tank, the water outlet section where the water outlet is located is fixed on the closed water tank, and the siphon drainage pipe is connected to the front section of the water inlet through a telescopic hose; a filter is installed at the water inlet of the siphon drainage pipe to filter the sediment; S3. During the initial start-up, water is poured into the siphon drainage pipe in reverse to discharge the gas in the pipe, and then the siphon drainage is started. The water inlet of the siphon drainage pipe draws groundwater in the slope and discharges it into the closed water tank through the filter; S4. After the closed water tank receives water from the outlet of the siphon drain pipe, the gravity increases, the linear elastic device is compressed, and with the cooperation of the slide rail and the slider, the closed water tank descends vertically and steadily, and drives the telescopic hose on the top of the closed water tank to expand and contract. At the same time, the conical plug pushes the drain valve at the bottom of the water tank into the closed water tank, and cooperates with the rubber ring to block the outlet of the siphon drain pipe. At this time, water flows out from the gaps on both sides of the drain valve and the open hollow circular tube, and is diverted to the reservoir or ditch through the "cross" guide groove and the drain pipe connected to the side wall of the guide groove.

[0015] The self-starting slope siphon drainage device and method with both stability and rapid diversion provided by the present invention have the following beneficial effects: 1. The present invention can effectively prevent the failure of the siphon drainage pipe due to excessively fast drainage, realize the rapid diversion and drainage of the device, and can also use the discharged water for irrigation of surrounding farmland, meeting the need for self-starting siphon drainage of the slope throughout the whole process, while also being conducive to the sustainable use of water resources.

[0016] 2. The present invention constructs a siphon drainage system for the slope through the siphon principle, a telescopic hose and a linear elastic device, and automatically adjusts the siphon flow parameters by utilizing the height difference of the liquid level at the inlet and outlet of the siphon drainage pipe, so as to reflect the changes of groundwater in real time. At the same time, the siphon drainage of the slope can be started without external power. The whole process is green and economical, and will not cause adverse effects on the slope ecology.

[0017] 3. The present invention realizes the contraction and rebound of the elastic device of the water level control line in the water tank, and the height of the water outlet of the siphon drain pipe can be freely changed with the water tank through the telescopic hose. During the descent of the water tank, the hollow circular tube with holes pushes the drain valve toward the inside of the water tank and blocks the water outlet of the siphon drain pipe, thereby preventing air from entering the siphon drain pipe and causing the siphon to be interrupted while completing the drainage.

[0018] 4. The present invention installs slide rails on both sides of the water tank and installs fixed sliders at corresponding positions on the inner side of the casing to ensure the stability of the water tank during the compression and rebound of the linear elastic device. At the same time, it also prevents external factors from causing the water tank to shake to a certain extent, thereby affecting the overall stability of the siphon drainage system.

[0019] 5. The "cross" drainage groove at the bottom of the casing of the present invention can fully receive the water discharged from the water tank when the drainage valve is opened, and quickly drain the water through multiple drainage pipes connected on the four sides of the casing, effectively solving the problem of low drainage efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention provides a self-starting slope siphon drainage device with both stability and rapid diversion.

[0021] Figure 2 It is a schematic diagram of the structure of the slide rail device installed on both sides of the water tank of the present invention.

[0022] Figure 3 It is a schematic diagram of the structure of the "cross" guide groove and the self-opening and closing device at the bottom of the casing of the present invention.

[0023] Among them, 1. Slope; 2. Groundwater level; 3. Pitch drilling; 4. Siphon drain pipe; 5. Filter; 6. Telescopic hose; 7. Box; 8. Closed water tank; 9. Slide rail; 10. Slider; 11. Drain valve; 12. Limiter; 13. Conical plug; 14. Rubber ring; 15. Hollow circular tube with perforation; 16. Linear elastic device; 17. "Cross" guide groove; 18. Drain pipe; 19. Threaded hole; 20. Fixing screw hole. DETAILED DESCRIPTION

[0024] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0025] Example 1 This embodiment provides a self-starting slope siphon drainage device with both stability and rapid diversion, referring to Figure 1 , which specifically include: Pitch-type drilling hole 3, siphon drain pipe 4, filter 5, telescopic hose 6, casing box 7, closed water tank 8, slide rail 9, fixed slide block 10, drain valve 11, limiter 12, self-opening and closing device, linear elastic device 16, "cross" guide groove 17, drain pipe 18.

[0026] Among them, the water inlet of the siphon drainage pipe 4 is arranged at the bottom of the pitch-inclined borehole 3 and is located below the groundwater level 2. The water outlet of the siphon drainage pipe 4 is located at the lower part of the closed water tank 8. The closed water tank 8 is movably arranged inside the casing 7. A drain valve 11 is installed at the bottom of the closed water tank 8. A "cross" guide groove 17 is provided at the bottom of the casing 7. A self-opening and closing device is installed in the middle of the "cross" guide groove 17. The bottom platform of the casing 7 is fixedly connected to the lower part of the linear elastic device 16, and the upper part of the linear elastic device 16 is connected to the four corners of the bottom of the water tank.

[0027] Specifically, the pitch-dip borehole 3 of this embodiment is installed on the slope 1 , and a stable groundwater level 2 is exposed inside the borehole. When the siphon drainage pipe 4 is installed, the water inlet of the siphon drainage pipe 4 needs to be located below the groundwater level 2 .

[0028] The siphon drainage pipe 4 of the present embodiment is preferably a PA pipe with an inner diameter of 5mm-10mm, having a water inlet and a water outlet. The water outlet is located at the lower part of the closed water tank 8. The water outlet section where the water outlet is located passes through and is fixed on the top of the water tank, and is connected to the front section by a telescopic hose 6. The siphon drainage principle is used to discharge the groundwater in the slope 1 into the closed water tank 8.

[0029] The filter 5 of this embodiment is preferably a polypropylene filter element with a pore size>1mm, which is installed at the water inlet of the siphon drainage pipe 4 to filter the silt in the pitch-type borehole 3 to prevent the silt from being deposited in the siphon drainage pipe 4 and affecting the siphon drainage efficiency.

[0030] The telescopic hose 6 of this embodiment is preferably a PU material steel wire reinforced telescopic hose 6, which is connected to the water inlet section and the water outlet section of the siphon drain pipe 4 using stainless steel joints. In order to achieve repeated siphoning operation of the device of the present invention, the inner diameter of the telescopic hose 6 should be equal to the inner diameter of the siphon drain pipe 4, and the telescopic length needs to be greater than the compression amount of the linear elastic device 16.

[0031] The casing 7 of this embodiment is preferably an iron casing 7, which is installed at the lower part or the foot of the slope 1. Sliders 10 are fixed on both sides of the casing 7. The bottom of the casing 7 is designed with a "cross" guide groove 17. The four corners are platforms for placing the linear elastic device 16, and a self-opening and closing device is installed in the middle.

[0032] As a preferred embodiment of this embodiment, refer to Figure 3 The self-opening and closing device includes a conical plug 13, a rubber ring 14 and a plurality of hollow circular tubes 15 with holes; the hollow circular tube 15 with holes is installed in the middle of the "cross" guide groove 17 at the bottom of the casing 7 and is located directly below the drain valve 11; the top of the hollow circular tube 15 with holes is a conical plug 13, and a rubber ring 14 is sleeved on the conical plug 13. During specific operation, the conical plug 13 opens the drain valve 11 and blocks the water outlet of the siphon drain pipe 4, and the water in the closed water tank 8 flows into the diversion groove from the gaps on both sides of the self-opening and closing device and the inside of the open hollow circular tube 15; based on this, the inner diameter of the self-opening and closing device should be equal to the inner diameter of the water outlet of the siphon drain pipe 4, which is smaller than the length of the drain valve 11, and the distance between the conical plug 13 and the water outlet of the siphon drain pipe 4 should be greater than the length of the drain valve 11; with such a design, when the closed water tank 8 descends, it can not only ensure that the conical plug 13 can block the water outlet of the siphon drain pipe 4 to prevent air from entering during the drainage process, but also ensure that the water in the water tank can flow out along the gaps on both sides of the drain valve 11 and the open hollow circular tube 15, and be quickly diverted through the "cross" diversion groove 17 and the drain pipe 18.

[0033] Specifically, the “cross” guide groove 17 of the present embodiment is located at the bottom of the casing 7 and is an integrated design of the casing 7 . The size of one side of the “cross” guide groove 17 is not less than 1 / 3 of the casing 7 .

[0034] The closed water tank 8 of this embodiment is preferably a stainless steel square water tank, which is connected to the water outlet of the siphon drainage pipe 4. The number of siphon drainage pipes 4 placed in the water tank should be less than 300. Slide rails 9 are installed on the two outer walls of the water tank, and the four corners of the bottom are connected to the linear elastic device 16. The slide rails 9 and the linear elastic device 16 ensure that the closed water tank 8 is stable enough to complete the repeated siphon drainage process.

[0035] Specifically, refer to Figure 2 The slide rail 9 is connected to the outer surface of the closed water tank 8 through the threaded hole 19, and the slider 10 is fixed to the inside of the sleeve box 7 through the fixing screw hole 20, so that the slide rail 9 and the slider 10 have good stability and will not fall off easily, thereby maintaining the overall stability of the device.

[0036] The slide rail 9 of this embodiment is embedded in the groove of the slider 10, that is, the stability of the device during the siphon drainage process is maintained through the cooperation of the slider 10 and the slide rail 9, ensuring that the closed water tank 8 can move smoothly up and down in the vertical direction even under the action of external loads, thereby ensuring the normal operation of the siphon drainage of the device; at the same time, the elastic force provided by the linear elastic device 16 further enhances the stability of the movement process of the closed water tank 8, ensuring the reciprocating operation of the siphon drainage process.

[0037] The drain valve 11 of this embodiment is a stainless steel door hinge type drain valve 11 with a size of 15-20 mm, which is installed at the bottom of the closed water tank 8 and is located directly below the water outlet of the siphon drain pipe 4. When closed, it is restricted by the limiter 12 at the bottom of the water tank to prevent it from opening outwards under the action of water pressure and causing leakage of the water tank. The size of the drain valve 11 should be larger than the inner diameter of the siphon drain pipe 4.

[0038] The upper part of the linear elastic device 16 of this embodiment is connected to the four corners of the bottom of the water tank, and the lower part is fixed to the bottom platform of the casing 7, and its compression amount shall not be less than the distance between the upper conical plug 13 of the self-opening and closing device and the water outlet of the siphon drain pipe 4.

[0039] The drainage pipe 18 is made of PA pipe, corresponding to the slot of the "cross" guide groove 17, installed at the bottom of the four sides of the casing 7, and the water outlet is connected to the water reservoir or drainage ditch, and the inner diameter shall not be larger than the size of the "cross" guide groove 17.

[0040] The present invention controls the contraction and rebound of the linear elastic device 16 through the water level in the water tank, and the height of the water outlet of the siphon drain pipe 4 can be freely changed with the water tank through the telescopic hose 6. During the descent of the water tank, the hollow circular tube 15 with holes pushes the drain valve 11 toward the inside of the water tank and blocks the water outlet of the siphon drain pipe 4, thereby completing the drainage and preventing the air from entering the siphon drain pipe 4 and causing the siphon to be interrupted; and slide rails 9 are installed on both sides of the outside of the water tank, and fixed sliders 10 are installed at corresponding positions on the inside of the casing 7 to ensure the stability of the water tank during the compression and rebound of the linear elastic device 16, and at the same time, to a certain extent, prevent the water tank from shaking due to interference from external factors, thereby affecting the overall stability of the siphon drainage system; in addition, when the drain valve 11 is opened, the "cross" drainage groove at the bottom of the casing 7 can fully receive the water in the water tank, and quickly guide and drain the water by connecting multiple drainage pipes 18 on the four sides of the casing 7, effectively solving the problem of low drainage efficiency.

[0041] Example 2 This embodiment is based on a self-starting slope 1 siphon drainage device with both stability and rapid diversion in Embodiment 1, and provides a self-starting slope 1 siphon drainage method with both stability and rapid diversion, which specifically includes the following steps: Step S1, determining the position, drilling depth and inclination angle of the tilted borehole 3 on the target slope 1 according to the groundwater level 2; Step S2, placing the water inlet of the siphon drain pipe 4 at the bottom of the pitch-type borehole 3, connecting the water outlet to the middle and lower part of the water tank, fixing the water outlet section where the water outlet is located on the closed water tank 8, and connecting the siphon drain pipe 4 with the front section of the water inlet through the telescopic hose 6; installing a filter 5 at the water inlet of the siphon drain pipe 4 to filter the sediment; Step S3, when starting for the first time, reversely pour water into the siphon drainage pipe 4 to discharge the gas in the pipe, and then start the siphon drainage, the water inlet of the siphon drainage pipe 4 draws groundwater in the slope 1 and discharges it into the closed water tank 8 through the filter 5; Step S4, after the closed water tank 8 receives water from the water outlet of the siphon drain pipe 4, the gravity increases, the linear elastic device 16 is compressed, and with the cooperation of the slide rail 9 and the slider 10, the closed water tank 8 descends vertically and stably, and during the descent, the telescopic hose 6 on the top of the closed water tank 8 is driven to expand and contract. At the same time, the conical plug 13 pushes the drain valve 11 at the bottom of the water tank to the inside of the closed water tank 8, and cooperates with the rubber ring 14 to block the water outlet of the siphon drain pipe 4 to prevent air from entering the pipe during the drainage process, which is conducive to repeated siphon drainage. At this time, water flows out from the gaps on both sides of the drain valve 11 and the open hollow circular tube 15, and is guided to the water reservoir or ditch through the "cross" guide groove 17 and the drainage pipe 18 connected to the side wall of the guide groove.

[0042] Although the specific implementation of the invention is described in detail in conjunction with the drawings, it should not be understood as limiting the scope of protection of this patent. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still fall within the scope of protection of this patent.

Claims

1. A self-starting slope siphon drainage device with both stability and rapid diversion, characterized by: It includes siphon drain pipe, casing box, closed water tank and self-opening and closing device; The water inlet of the siphon drainage pipe is arranged at the bottom of the pitch-down borehole and is below the groundwater level, and the water outlet of the siphon drainage pipe is located at the lower part of the closed water tank; the closed water tank is movably arranged inside the casing, and a drainage valve is installed at the bottom of the closed water tank; a "cross" guide groove is provided at the bottom of the casing, and a self-opening and closing device is installed in the middle of the "cross" guide groove; the bottom platform of the casing is fixedly connected to the lower part of the linear elastic device, and the upper part of the linear elastic device is connected to the four corners of the bottom of the water tank.

2. The self-starting slope siphon drainage device with both stability and rapid diversion according to claim 1 is characterized by: A filter is installed at the water inlet of the siphon drainage pipe; the water inlet section and the water outlet section of the siphon drainage pipe are connected by a telescopic hose.

3. The self-starting slope siphon drainage device with both stability and rapid diversion according to claim 2 is characterized in that: The inner diameter of the telescopic hose is equal to the inner diameter of the siphon drain pipe, and the telescopic length of the telescopic hose is greater than the compression amount of the linear elastic device.

4. The self-starting slope siphon drainage device with both stability and rapid diversion according to claim 1 is characterized in that: The casing is installed at the lower part of the slope or the foot of the slope, and sliding blocks that slide with the closed water tank are fixed on both sides of the casing; the four corners of the bottom of the casing are platforms for connecting the linear elastic device.

5. The self-starting slope siphon drainage device with both stability and rapid diversion according to claim 1 is characterized in that: The self-opening and closing device includes a conical plug, a rubber ring and a hollow circular tube with a hole; the hollow circular tube with a hole is installed in the middle of the "cross" guide groove at the bottom of the casing and is located directly below the drain valve; the top of the hollow circular tube with a hole is a conical plug, and the conical plug is covered with a rubber ring.

6. The self-starting slope siphon drainage device with both stability and rapid diversion according to claim 5 is characterized by: Drain pipes are installed at the openings of the "cross" guide grooves.

7. The self-starting slope siphon drainage device with both stability and rapid diversion according to claim 5 is characterized by: The compression amount of the linear elastic device is greater than or equal to the distance between the conical plug and the water outlet of the siphon drain pipe; the inner diameter of the perforated hollow circular tube is the same as the inner diameter of the siphon drain pipe, and the inner diameter of the perforated hollow circular tube is smaller than the size of the drain valve.

8. The self-starting slope siphon drainage device with both stability and rapid diversion according to claim 1 is characterized by: Slide rails are installed on the two outer walls of the closed water tank, and the slide rails are movably arranged on the sliding blocks.

9. The self-starting slope siphon drainage device with both stability and rapid diversion according to claim 1 is characterized by: The drain valve is installed at the bottom of the closed water tank and is located directly below the water outlet of the siphon drain pipe; when the drain valve is closed, it is restricted by the limiter at the bottom of the closed water tank, and the size of the drain valve is larger than the inner diameter of the siphon drain pipe.

10. A drainage method of a self-starting slope siphon drainage device with both stability and rapid diversion according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Determine the position, drilling depth and inclination of the tilted borehole on the target slope according to the groundwater level; S2. The water inlet of the siphon drainage pipe is placed at the bottom of the pitch-down borehole, the water outlet is connected to the middle and lower part of the water tank, the water outlet section where the water outlet is located is fixed on the closed water tank, and the siphon drainage pipe is connected to the front section of the water inlet through a telescopic hose; a filter is installed at the water inlet of the siphon drainage pipe to filter the sediment; S3. During the initial start-up, water is poured into the siphon drainage pipe in reverse to discharge the gas in the pipe, and then the siphon drainage is started. The water inlet of the siphon drainage pipe draws groundwater in the slope and discharges it into the closed water tank through the filter; S4. After the closed water tank receives water from the outlet of the siphon drain pipe, the gravity increases, the linear elastic device is compressed, and with the cooperation of the slide rail and the slider, the closed water tank descends vertically and steadily, and drives the telescopic hose on the top of the closed water tank to expand and contract. At the same time, the conical plug pushes the drain valve at the bottom of the water tank to the inside of the closed water tank, and cooperates with the rubber ring to block the outlet of the siphon drain pipe. At this time, water flows out from the gaps on both sides of the drain valve and the open hollow circular tube, and is diverted to the water reservoir or ditch through the "cross" guide groove and the drain pipe connected to the side wall of the guide groove.

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