Karst peak cluster depression drought and flood comprehensive treatment method

Abstract

The invention relates to a karst peak cluster depression drought and flood comprehensive treatment method, and belongs to the field of drought and flood control. Comprising the following steps: building a retaining slope dam at a peak cluster gully outlet, and remotely and wirelessly connecting with an indoor data monitoring and processing platform; building a water retaining device in the depression sinkhole, and remotely and wirelessly connecting the depression sinkhole with the indoor data monitoring and processing platform; a rainfall monitoring station is built in the open space of the depression and is in remote wireless connection with the indoor data monitoring and processing platform, and rainfall information is transmitted to the indoor data monitoring and processing platform in real time; a water level monitoring device is built in the depression underground dissolved well and is in remote wireless connection with the indoor data monitoring and processing platform, and underground water level information is transmitted to the indoor data monitoring and processing platform in real time; and the indoor data monitoring and processing platform is used for remotely controlling opening and closing of the retaining slope dam and the water retaining device. The method is beneficial to comprehensive treatment of drought and flood of karst peak cluster depression.

Description

Technical Field

[0001] The present invention relates to the field of drought and flood prevention, and in particular to a comprehensive drought and flood control method for karst peak cluster depressions. Background Art

[0002] Karst peak cluster depression is a special karst landform widely existing in the karst areas of southwestern my country. Topographically, it is a closed depression surrounded by peak clusters and low in the middle. It can collect a large amount of precipitation in a short period of time, resulting in frequent waterlogging disasters during the rainy season.

[0003] Karst peak-cluster depressions are often located in watersheds, serving as groundwater recharge areas and experiencing rapid surface and groundwater loss. They have a small elevation difference from adjacent depressions, and the karst depth is relatively shallow. These depressions harbor perennially filled karst pools and wells, serving as spillways for the surrounding peak-cluster mountainous areas and responding quickly to rainfall. However, sinkholes within these depressions are few in number and shallow in depth, resulting in slow water withdrawal and easy blockage. The underground karst conduits have a relatively flat profile and low hydraulic gradient, resulting in limited drainage capacity. Therefore, compared with other karst landforms, peak-cluster depressions suffer the most severe drought and flood disasters. Concentrated rainfall is the direct external cause of flooding, while the structural constraints of underground karst conduits and sinkholes are the internal factors. Therefore, how to scientifically and effectively control external factors of flooding, regulate and store rainfall and flood resources in karst peak-cluster depressions, and effectively manage drought and flood disasters in these areas remains exploratory, with no specific prevention and control technologies or methods. This severely restricts the utilization of precious land resources and economic development in these areas. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a comprehensive method for controlling drought and flood in karst peak cluster depressions to solve the above problems.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A comprehensive method for controlling drought and flood in karst peak cluster depressions, comprising the following steps: constructing a retaining dam at the outlet of the peak cluster gully, and remotely wirelessly connecting it to an indoor data monitoring and processing platform; constructing a water retaining device in a water hole in the depression, and remotely wirelessly connecting it to the indoor data monitoring and processing platform; constructing a rainfall monitoring station in an open area of ​​the depression, and remotely wirelessly connecting it to the indoor data monitoring and processing platform, and transmitting rainfall information to the indoor data monitoring and processing platform in real time; constructing a water level monitoring device in an underground karst well in the depression, and remotely wirelessly connecting it to the indoor data monitoring and processing platform, and transmitting groundwater level information to the indoor data monitoring and processing platform in real time; and remotely controlling the opening and closing of the retaining dam and the water retaining device by using the indoor data monitoring and processing platform.

[0006] The beneficial effects of the present invention are as follows: building a rainfall monitoring station in an open area of ​​the depression is conducive to real-time monitoring of the rainfall information of the depression, and provides judgment conditions for the opening and closing of the intercepting dam for the indoor data monitoring and processing platform. By closing the intercepting dam, it is conducive to intercepting the surface water at the high part of the karst peak cluster at the outlet of the peak cluster gully under the direct external cause of concentrated rainfall that causes waterlogging, slowing down the speed of flood gathering to the depression, increasing the infiltration of groundwater at the outlet of the peak cluster gully, and thus raising the rainfall threshold that causes waterlogging, reducing the flood discharge pressure of the sinkhole in the depression and the degree of waterlogging in the depression; The construction of a water level monitoring device in the well is conducive to real-time monitoring of the groundwater level information of the depression, and provides judgment conditions for the indoor data monitoring and processing platform to open and close the water retaining device. By opening the water retaining device, the surface water that causes waterlogging can be quickly discharged into the sinkhole and discharged into the underground karst pipeline along the sinkhole. When the water level in the depression is lower than the ground, closing the water retaining device is also conducive to delaying the storage time of groundwater in the karst aquifer of the depression, giving play to the regulation and storage function of the karst aquifer of the depression, improving the utilization efficiency of rainwater resources, shortening the dry season time of the depression, and realizing comprehensive management of drought and flood in the karst peak cluster depression.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the indoor data monitoring and processing platform is used to remotely control the opening and closing of the retaining dam and the water retaining device, including: when the indoor data monitoring and processing platform monitors through the rainfall monitoring station that the rainfall in the depression is greater than the rainfall critical value preset in the indoor data monitoring and processing platform, the indoor data monitoring and processing platform remotely controls the closing of the retaining dam.

[0009] The beneficial effect of adopting the above-mentioned further scheme is: when the rainfall in the depression monitored by the rainfall monitoring station is greater than the rainfall critical value preset in the indoor data monitoring and processing platform, it means that waterlogging has formed on the surface soil layer of the depression, thereby providing judgment conditions for the indoor data monitoring and processing platform to remotely control the closure of the intercepting slope dam.

[0010] Furthermore, the indoor data monitoring and processing platform is used to remotely control the opening and closing of the retaining dam and the water retaining device, including: when the indoor data monitoring and processing platform monitors through the water level monitoring device that the groundwater level of the depression is higher than the groundwater level critical value preset in the indoor data monitoring and processing platform, the indoor data monitoring and processing platform remotely controls the water retaining device to open.

[0011] The beneficial effect of adopting the above-mentioned further scheme is: when the water level monitoring device monitors that the groundwater level of the depression is higher than the groundwater level critical value preset in the indoor data monitoring and processing platform, it means that waterlogging has formed on the surface soil layer of the depression at this time, thereby providing judgment conditions for the indoor data monitoring and processing platform to remotely control the opening of the water retaining device.

[0012] Furthermore, the intercepting and storing slope dam includes a dam body and an intercepting and storing mechanism. A slope dam water outlet for surface water to pass through is provided in the middle of the dam body, and the intercepting and storing mechanism is movably mounted on the dam body.

[0013] The beneficial effect of adopting the above-mentioned further scheme is that the intercepting and storing mechanism is conducive to closing the slope dam water outlet when waterlogging forms on the surface soil layer of the depression, intercepting the surface water at the high point of the karst peak cluster at the outlet of the peak cluster gully, slowing down the speed of surface water at the high point of the karst peak cluster converging to the depression, increasing the infiltration of groundwater at the outlet of the peak cluster gully, thereby increasing the rainfall threshold that causes waterlogging, reducing the discharge pressure of the sinkhole in the depression and the degree of waterlogging in the depression.

[0014] Furthermore, the intercepting mechanism includes: an intercepting screw, an intercepting gate and an intercepting motor. The intercepting motor is fixedly mounted on the dam body, and its output shaft is transmission-connected to the intercepting screw. The intercepting motor is remotely wirelessly connected to the indoor data monitoring and processing platform. The intercepting screw is rotatably mounted in the dam body, and the intercepting gate is threadedly sleeved on the intercepting screw and slidingly engaged with the dam body.

[0015] The beneficial effect of adopting the above further scheme is that the interception motor drives the interception screw to rotate, which is conducive to the displacement of the interception gate mounted on the interception screw along the interception screw, thereby realizing the opening and closing of the slope dam water outlet.

[0016] Furthermore, the water retaining device includes a water retaining cofferdam and a water retaining mechanism. The water retaining cofferdam is a tubular structure arranged to fit the inner wall of the sinkhole. The upper side wall of the water retaining cofferdam is provided with a concave water outlet. The concave water outlet is a through hole connecting the depression drainage ditch and the sinkhole. The water retaining mechanism is installed on the water retaining cofferdam and is adapted to be connected to the concave water outlet.

[0017] The beneficial effect of adopting the above-mentioned further scheme is that the water retaining cofferdam is a tubular structure arranged to fit the inner wall of the sinkhole, which is conducive to improving the structure of the original sinkhole, so that the water collected in the drainage ditch in the depression to form waterlogging enters the sinkhole through the concave water outlet, and quickly enters the underground karst pipeline through the sinkhole for discharge, thereby speeding up the drainage of waterlogging.

[0018] Furthermore, the water-blocking mechanism includes: a water-blocking motor, a water-blocking screw, a water-blocking gate and a support frame. The support frame is fixedly mounted on the top of the water-blocking cofferdam. The water-blocking motor is fixedly mounted on the support frame, and its output shaft is transmission-connected to the water-blocking screw. The water-blocking motor is remotely wirelessly connected to the indoor data monitoring and processing platform. The water-blocking gate is vertically arranged and threadedly sleeved on the water-blocking screw. The water-blocking gate is slidingly connected to the concave water outlet.

[0019] The beneficial effect of adopting the above-mentioned further scheme is that the water-blocking motor is conducive to driving the water-blocking screw to rotate, and then driving the water-blocking gate threaded on the water-blocking screw to move up and down along the water-blocking gate, thereby realizing the opening and closing of the concave water outlet, and then achieving dynamic regulation of surface water, maximizing the storage and utilization of surface water.

[0020] Furthermore, the water level monitoring device includes a water level monitoring tube, a protective cover and a monitoring mechanism. A plurality of steel nail rings are axially spaced on the side wall of the water level monitoring tube. The water level monitoring tube is fixedly installed on the inner wall of the underground solution well in the depression through the steel nail rings. The monitoring mechanism is arranged in the water level monitoring tube. The protective cover is fixedly installed on the top end of the water level monitoring tube. The protective cover is sealed and connected to the water level monitoring tube.

[0021] The beneficial effects of adopting the above-mentioned further scheme are: the monitoring mechanism is conducive to real-time monitoring of groundwater level information through a water level monitoring tube fixedly installed on the inner wall of the underground well in the depression, providing judgment conditions for the indoor data monitoring and processing platform to remotely control the lifting and lowering of the water retaining gate, and the protective cover is conducive to ensuring that the work of the monitoring mechanism is not affected by groundwater.

[0022] Furthermore, the water level monitoring tube is a tubular structure with a closed bottom end, and a plurality of water inlet holes are circumferentially provided on the lower side wall of the water level monitoring tube, and the water inlet holes are through holes.

[0023] The beneficial effects of adopting the above-mentioned further scheme are: the bottom end of the water level monitoring pipe is closed, which helps to prevent a large amount of soil and impurities in the underground solution wells in the depression from entering the water level monitoring pipe, thereby causing damage to the monitoring mechanism; the water inlet hole helps to allow groundwater in the underground solution wells in the depression to enter the water level monitoring pipe, providing necessary groundwater for the work of the monitoring mechanism.

[0024] Furthermore, the monitoring mechanism includes: a water level meter, a data cable and a wireless transmitter. The water level meter and the data cable are both arranged in the water level monitoring tube. The water level meter is arranged at the bottom inside the water level monitoring tube. The wireless transmitter is fixedly installed on the top of the water level monitoring tube and is arranged in the protective cover. The wireless transmitter is remotely wirelessly connected to the indoor data monitoring and processing platform. The top and bottom ends of the data cable are connected to the wireless transmitter and the water level meter in a one-to-one correspondence.

[0025] The beneficial effect of adopting the above-mentioned further scheme is that the water level meter is conducive to real-time monitoring of the pressure value of the groundwater level, and transmits the pressure value to the wireless transmitter through the data line, and uses the wireless transmitter to transmit the monitored real-time pressure value to the indoor data monitoring and processing platform. By converting the pressure value into water level height and comparing it with the preset groundwater level critical value, it provides judgment conditions for the indoor data monitoring and processing platform to remotely control the lifting and lowering of the water retaining gate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A flowchart of the treatment method provided by an embodiment of the present invention;

[0027] Figure 2 A schematic structural diagram of a water level monitoring device provided in an embodiment of the present invention;

[0028] Figure 3 A schematic structural diagram of a slope dam provided in an embodiment of the present invention;

[0029] Figure 4 A top view of a water retaining device provided in an embodiment of the present invention;

[0030] Figure 5 A longitudinal cross-section of the water retaining device provided in an embodiment of the present invention Figure 1 ;

[0031] Figure 6 A longitudinal cross-section of the water retaining device provided in an embodiment of the present invention Figure 2 .

[0032] in, Figure 2 The dotted line in FIG represents the inner wall of the water level monitoring tube 31. Figure 4 The parallel dotted lines in the figure represent underground karst pipes 25, and the parallel solid lines represent depression drainage ditches 27. Figure 5 The dotted line in the figure represents the groundwater level.

[0033] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0034] 1. Impounding dam; 2. Water retaining device; 3. Water level monitoring device; 11. Dam body; 12. Impounding mechanism; 21. Water retaining cofferdam; 22. Water retaining mechanism; 23. Sinkhole; 24. Karst aquifer in depression; 25. Underground karst pipeline; 26. Surface soil layer; 27. Drainage ditch in depression; 31. Water level monitoring pipe; 32. Protective cover; 33. Monitoring mechanism; 111. Impounding dam water inlet; 121. Impounding screw rod; 122. Impounding gate; 123. Impounding motor; 211. Concave water inlet; 221. Water retaining motor; 222. Water retaining screw rod; 223. Water retaining gate; 224. Support frame; 311. Water inlet; 312. Steel nail snare; 331. Water level gauge; 332. Data cable; 333. Wireless transmitter. DETAILED DESCRIPTION

[0035] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0036] like Figure 1 As shown, this embodiment provides a method for comprehensive management of drought and flood in karst peak cluster depressions, comprising the following steps: constructing a retaining dam 1 at the outlet of the peak cluster gully, and remotely wirelessly connecting it to an indoor data monitoring and processing platform; constructing a water retaining device 2 in a water hole in the depression, and remotely wirelessly connecting it to the indoor data monitoring and processing platform; constructing a rainfall monitoring station in an open area of ​​the depression, and remotely wirelessly connecting it to the indoor data monitoring and processing platform, and transmitting rainfall information to the indoor data monitoring and processing platform in real time; constructing a water level monitoring device 3 in an underground karst well in the depression, and remotely wirelessly connecting it to the indoor data monitoring and processing platform, and transmitting groundwater level information to the indoor data monitoring and processing platform in real time; and utilizing the indoor data monitoring and processing platform to remotely control the opening and closing of the retaining dam 1 and the water retaining device 2.

[0037] It should be noted that: the peak cluster gully outlet refers to the foot of the mountain between two adjacent karst peak clusters. In the technical solution of the present invention, one or more intercepting slope dams 1 can be built at the peak cluster gully outlet in the karst peak cluster area according to actual conditions;

[0038] like Figure 5 As shown, the sinkhole 23 is a geological phenomenon naturally formed in the depression of the karst peak cluster. Its bottom end is directly connected to the underground karst pipeline 25, allowing surface water to flow directly into the underground karst pipeline 25 through the sinkhole 23 and be discharged. The underground karst pipeline 25 is also a geological phenomenon naturally formed in the depression of the karst peak cluster.

[0039] The rainfall monitoring station is built in an open area of ​​a depression, and is preferably built on a roof. The monitoring of rainfall information by the rainfall monitoring station belongs to the existing technology, so its specific structure is not described.

[0040] The underground karst well is a geological phenomenon formed naturally in the depression of the karst peak cluster. It is not connected to the underground karst pipeline 25 and contains groundwater. In conjunction with the water level monitoring device 3, the groundwater level information of the depression can be monitored in real time.

[0041] In addition, the remote wireless connection and control between the indoor data monitoring and processing platform and the impounding slope dam 1, the water retaining device 2, the rainfall monitoring station and the water level monitoring device 3 belong to the existing technology, so the specific connection and control methods are not described;

[0042] When the flooding is too severe, the surface water in the depression will not have enough time to seep into the ground, and the waterlogging will become more serious.

[0043] When the surface water at the top of the karst peak cluster is intercepted and stored at the foot of the mountain through the intercepting slope dam 1, since the surface water and groundwater are connected, the intercepted surface water at the top of the karst peak cluster will slowly seep into the ground, thereby increasing the infiltration of groundwater at the peak cluster gully outlet;

[0044] Before the technical solution of the present invention is implemented, the rainfall value that causes waterlogging on the surface soil layer 26 is the rainfall threshold that causes waterlogging. This rainfall threshold that causes waterlogging is the "rainfall critical value" preset in the indoor data monitoring and processing platform below. The "rainfall critical value" is smaller than the rainfall threshold that causes waterlogging after the technical solution of the present invention is implemented.

[0045] The beneficial effects of the present invention are as follows: building a rainfall monitoring station in an open area of ​​the depression is conducive to real-time monitoring of the rainfall information of the depression, and provides judgment conditions for the opening and closing of the intercepting dam for the indoor data monitoring and processing platform. By closing the intercepting dam, it is conducive to intercepting the surface water at the high part of the karst peak cluster at the outlet of the peak cluster gully under the direct external cause of concentrated rainfall that causes waterlogging, slowing down the speed of flood gathering to the depression, increasing the infiltration of groundwater at the outlet of the peak cluster gully, and thus raising the rainfall threshold that causes waterlogging, reducing the flood discharge pressure of the sinkhole in the depression and the degree of waterlogging in the depression; The construction of a water level monitoring device in the well is conducive to real-time monitoring of the groundwater level information of the depression, and provides judgment conditions for the indoor data monitoring and processing platform to open and close the water retaining device. By opening the water retaining device, the surface water that causes waterlogging can be quickly discharged into the sinkhole and discharged into the underground karst pipeline along the sinkhole. When the water level in the depression is lower than the ground, closing the water retaining device is also conducive to delaying the storage time of groundwater in the karst aquifer of the depression, giving play to the regulation and storage function of the karst aquifer of the depression, improving the utilization efficiency of rainwater resources, shortening the dry season time of the depression, and realizing comprehensive management of drought and flood in the karst peak cluster depression.

[0046] Preferably, the indoor data monitoring and processing platform is used to remotely control the opening and closing of the retaining dam 1 and the water retaining device 2, including: when the indoor data monitoring and processing platform monitors through the rainfall monitoring station that the rainfall in the depression is greater than the rainfall critical value preset in the indoor data monitoring and processing platform, the indoor data monitoring and processing platform remotely controls the retaining dam 1 to close.

[0047] Among them, it should be noted that: in the technical solution of the present invention, the "critical rainfall value" is the rainfall threshold value that causes waterlogging on the surface soil layer 26, which is obtained by monitoring the rainfall at an open place in the depression through a rainfall monitoring station before the technical solution of the present invention is implemented. In a preferred embodiment of the present invention, the "critical rainfall value" preset in the indoor data monitoring and processing platform can be set to be slightly smaller than the rainfall threshold value that causes waterlogging, so that the operation of closing the retaining dam 1 can be implemented when waterlogging is about to occur in the depression.

[0048] The beneficial effect of adopting the above-mentioned preferred scheme is: when the rainfall in the depression monitored by the rainfall monitoring station is greater than the rainfall critical value preset in the indoor data monitoring and processing platform, it means that waterlogging has formed on the surface soil layer of the depression, thereby providing judgment conditions for the indoor data monitoring and processing platform to remotely control the closure of the intercepting slope dam.

[0049] Preferably, the indoor data monitoring and processing platform is used to remotely control the opening and closing of the retaining dam 1 and the water retaining device 2, including: when the indoor data monitoring and processing platform monitors through the water level monitoring device 3 that the groundwater level of the depression is higher than the groundwater level critical value preset in the indoor data monitoring and processing platform, the indoor data monitoring and processing platform remotely controls the water retaining device 2 to open.

[0050] It should be noted that, in the technical solution of the present invention, the determination of the "critical groundwater level value" can be obtained by the following method: when a water level monitoring device 3 is constructed in an underground well in a depression, the height of the water level gauge 331 in the water level monitoring device 3 from the surface soil layer 26 can be measured, and this height is the "critical groundwater level value". The water level gauge 331 is essentially a sensor that calculates the height by the pressure value. The conversion method between the pressure value and the height is an existing technology. By substituting the height of the water level gauge 331 from the surface soil layer 26 into the conversion method, the corresponding critical pressure value can be obtained. When the pressure value monitored by the water level gauge 331 reaches the critical pressure value, it means that the groundwater level has reached the critical groundwater level value.

[0051] In a preferred embodiment of the present invention, the "groundwater level critical value" preset in the indoor data monitoring and processing platform can be set to be slightly smaller than the height of the water level meter 331 from the surface soil layer 26, so that the water retaining device 2 can be opened when the depression is about to be flooded.

[0052] The beneficial effect of adopting the above-mentioned preferred scheme is: when the water level monitoring device monitors that the groundwater level of the depression is higher than the groundwater level critical value preset in the indoor data monitoring and processing platform, it means that waterlogging has formed on the surface soil layer of the depression at this time, thereby providing judgment conditions for the indoor data monitoring and processing platform to remotely control the opening of the water retaining device.

[0053] Preferably, Figure 3 As shown, the impoundment dam 1 includes a dam body 11 and an impoundment mechanism 12 . A dam water outlet 111 for surface water to pass through is provided in the middle of the dam body 11 . The impoundment mechanism 12 is movably mounted on the dam body 11 .

[0054] It should be noted that: in a preferred embodiment of the present invention, the slope dam water outlet 111 is a channel provided in the middle of the dam body 11;

[0055] The longitudinal section of the dam body 11 is a right-angled trapezoid. The lower base width of the dam body 11 is 1.2m, the upper top width is 0.8m, and the height is 1.5-2m. The length can be determined according to the actual scale of the low-lying area. The water-facing surface of the dam body 11 is vertical, and the water-receiving surface is inclined.

[0056] The slope dam water outlet 111 can also be connected to the river, ditch and other surface water flow areas in the depression through a pipeline, so that in the dry season when there is water shortage, the indoor data monitoring and processing platform can remotely control the interception and storage mechanism 12 to automatically open the slope dam water outlet 111 to release water to the depression, thereby alleviating the water shortage in the depression during the dry season;

[0057] In the “opening and closing of the retaining dam 1 ”, closing refers to the retaining mechanism 12 closing the dam water outlet 111 , and opening refers to the retaining mechanism 12 opening the dam water outlet 111 .

[0058] The beneficial effects of adopting the above-mentioned preferred scheme are: the interception and storage mechanism is conducive to closing the slope dam water outlet when waterlogging forms on the surface soil layer of the depression, intercepting the surface water at the high point of the karst peak cluster at the outlet of the peak cluster gully, slowing down the speed of surface water at the high point of the karst peak cluster converging to the depression, increasing the infiltration of groundwater at the outlet of the peak cluster gully, and thus increasing the rainfall threshold that causes waterlogging, reducing the discharge pressure of the sinkhole in the depression and the degree of waterlogging in the depression.

[0059] Preferably, Figure 3 As shown, the intercepting mechanism 12 includes: an intercepting screw rod 121, an intercepting gate 122 and an intercepting motor 123. The intercepting motor 123 is fixedly mounted on the dam body 11, and its output shaft is transmission-connected to the intercepting screw rod 121. The intercepting motor 123 is remotely wirelessly connected to the indoor data monitoring and processing platform. The intercepting screw rod 121 is rotatably mounted in the dam body 11, and the intercepting gate 122 is threadedly mounted on the intercepting screw rod 121 and slidingly engaged with the dam body 11.

[0060] It should be noted that: in a preferred embodiment of the present invention, the output shaft of the interception motor 123 is connected to the interception screw rod 121 via a coupling;

[0061] A guide rail or guide groove is provided in the dam body 11, and the retaining gate 122 is slidably connected to the guide rail or guide groove, so that under the rotation of the retaining screw rod 121, the retaining gate 122 can slide along the retaining screw rod 121 in the dam body 11, thereby realizing the opening and closing of the slope dam water outlet.

[0062] The beneficial effect of adopting the above-mentioned preferred solution is that the interception motor drives the interception screw to rotate, which is conducive to the displacement of the interception gate mounted on the interception screw along the interception screw, thereby realizing the opening and closing of the slope dam water outlet.

[0063] Preferably, Figures 4 to 6As shown, the water retaining device 2 includes a water retaining cofferdam 21 and a water retaining mechanism 22. The water retaining cofferdam 21 is a tubular structure arranged to fit the inner wall of the sinkhole 23. The upper side wall of the water retaining cofferdam 21 is provided with a concave water outlet 211. The concave water outlet 211 is a through hole connecting the depression drainage ditch 27 and the sinkhole 23. The water retaining mechanism 22 is installed on the water retaining cofferdam 21 and is adaptively connected to the concave water outlet 211.

[0064] It should be noted that, in a preferred embodiment of the present invention, the method for constructing the water retaining device 2 is as follows: first, the silt at the entrance of the sinkhole 23 is excavated and cleaned to the bottom bedrock layer, exposing the underground karst pipeline 25; a tubular water retaining cofferdam 21 is built around the sinkhole 23; the water retaining cofferdam 21 penetrates into the underground karst pipeline 25 at the bottom of the sinkhole 23, and the top reaches the surface soil layer 26; the concave water outlet 211 is built at the connection between the water retaining cofferdam 21 and the depression drainage ditch 27; the depression drainage ditch 27 can collect water that forms waterlogging on the surface soil layer 26;

[0065] like Figure 5 As shown, the periphery of the water retaining cofferdam 21 is a depression karst aquifer 24. Before the water retaining cofferdam 21 is built, the depression karst aquifer 24 is directly connected to the sinkhole 23. The groundwater in the depression karst aquifer 24 directly enters the sinkhole 23 and enters the underground karst pipeline 25 through the sinkhole 23 for discharge. However, after the water retaining cofferdam 21 is built, the groundwater in the depression karst aquifer 24 is blocked by the water retaining cofferdam 21. The groundwater needs to pass through the water retaining cofferdam 21 before entering the sinkhole 23. In other words, the speed at which the groundwater in the depression karst aquifer 24 enters the sinkhole 23 is slowed down, which delays the storage time of the groundwater in the depression karst aquifer 24, and plays the regulating and storing function of the depression karst aquifer 24, thereby improving the utilization efficiency of rainwater resources, shortening the dry season time of the depression, and realizing the comprehensive management of drought and flood in the karst peak cluster depression.

[0066] In “opening and closing of the water retaining device 2 ”, opening means that the water retaining mechanism 22 opens the concave water outlet 211 , and closing means that the water retaining mechanism 22 closes the concave water outlet 211 .

[0067] The beneficial effect of adopting the above-mentioned preferred scheme is that the water retaining cofferdam is a tubular structure arranged to fit the inner wall of the sinkhole, which is conducive to improving the structure of the original sinkhole, so that the water collected in the drainage ditch in the depression to form waterlogging enters the sinkhole through the concave water outlet, and quickly enters the underground karst pipeline through the sinkhole for discharge, thereby speeding up the drainage of waterlogging.

[0068] Preferably, Figures 4 to 6 As shown, the water-blocking mechanism 22 includes: a water-blocking motor 221, a water-blocking screw rod 222, a water-blocking gate 223 and a support frame 224. The support frame 224 is fixedly mounted on the top of the water-blocking cofferdam 21. The water-blocking motor 221 is fixedly mounted on the support frame 224, and its output shaft is transmission-connected with the water-blocking screw rod 222. The water-blocking motor 221 is remotely wirelessly connected with the indoor data monitoring and processing platform. The water-blocking gate 223 is vertically arranged and threadedly sleeved on the water-blocking screw rod 222. The water-blocking gate 223 is slidingly connected with the concave water outlet 211.

[0069] It should be noted that: in a preferred embodiment of the present invention, the output shaft of the water-blocking motor 221 is connected to the water-blocking screw rod 222 via a coupling;

[0070] A guide rail or guide groove is provided on the inner wall of the water retaining cofferdam 21, and the water retaining gate 223 is slidably connected to the guide rail or guide groove, so that under the rotation of the water retaining screw 222, the water retaining gate 223 can slide up and down along the water retaining screw 222 in the concave water outlet 211, thereby realizing the opening and closing of the concave water outlet 211;

[0071] The width and height of the water retaining gate 223 are set according to the width and depth of the depression drainage ditch 27.

[0072] The beneficial effect of adopting the above-mentioned preferred scheme is that the water-blocking motor is conducive to driving the water-blocking screw to rotate, and then driving the water-blocking gate threaded on the water-blocking screw to move up and down along the water-blocking gate, thereby realizing the opening and closing of the concave water outlet, and then achieving dynamic regulation of surface water, maximizing the storage and utilization of surface water.

[0073] Preferably, Figure 2 As shown, the water level monitoring device 3 includes a water level monitoring tube 31, a protective cover 32 and a monitoring mechanism 33. A plurality of steel nail snares 312 are axially spaced on the side wall of the water level monitoring tube 31. The water level monitoring tube 31 is fixedly installed on the inner wall of the underground solution well in the depression through the steel nail snares 312. The monitoring mechanism 33 is arranged in the water level monitoring tube 31. The protective cover 32 is fixedly installed on the top end of the water level monitoring tube 31. The protective cover 32 is sealed and connected to the water level monitoring tube 31.

[0074] The beneficial effects of adopting the above-mentioned preferred scheme are: the monitoring mechanism is conducive to real-time monitoring of groundwater level information through a water level monitoring tube fixedly installed on the inner wall of the underground well in the depression, providing judgment conditions for the indoor data monitoring and processing platform to remotely control the lifting and lowering of the water retaining gate, and the protective cover is conducive to ensuring that the work of the monitoring mechanism is not affected by groundwater.

[0075] Preferably, Figure 2 As shown, the water level monitoring tube 31 is a tubular structure with a closed bottom end. A plurality of water inlet holes 311 are circumferentially provided on the lower side wall of the water level monitoring tube 31 , and the water inlet holes 311 are through holes.

[0076] The beneficial effects of adopting the above-mentioned preferred scheme are: the bottom end of the water level monitoring pipe is closed, which is conducive to preventing a large amount of soil and impurities in the underground solution wells in the depression from entering the water level monitoring pipe, thereby causing damage to the monitoring mechanism; the water inlet hole is conducive to allowing groundwater in the underground solution wells in the depression to enter the water level monitoring pipe, providing necessary groundwater for the work of the monitoring mechanism.

[0077] Preferably, Figure 2 As shown, the monitoring mechanism 33 includes: a water level meter 331, a data line 332 and a wireless transmitter 333. The water level meter 331 and the data line 332 are both arranged in the water level monitoring tube 31. The water level meter 331 is arranged at the lower part of the water level monitoring tube 31. The wireless transmitter 333 is fixedly installed on the top of the water level monitoring tube 31 and is arranged in the protective cover 32. The wireless transmitter 333 is remotely wirelessly connected to the indoor data monitoring and processing platform. The top and bottom ends of the data line 332 are connected to the wireless transmitter 333 and the water level meter 331 in a one-to-one correspondence.

[0078] It should be noted that, in the technical solution of the present invention, the water level gauge 331 is a pressure sensor.

[0079] The beneficial effects of adopting the above-mentioned preferred scheme are: the water level meter is conducive to real-time monitoring of the pressure value of the groundwater level, and transmitting the pressure value to the wireless transmitter through the data line, and using the wireless transmitter to transmit the monitored real-time pressure value to the indoor data monitoring and processing platform. By converting the pressure value into water level height and comparing it with the preset groundwater level critical value, it provides judgment conditions for the indoor data monitoring and processing platform to remotely control the lifting and lowering of the water retaining gate.

[0080] The implementation method of the present invention is as follows: when the indoor data monitoring and processing platform monitors through the rainfall monitoring station that the rainfall in the depression is greater than the rainfall critical value preset in the indoor data monitoring and processing platform, the indoor data monitoring and processing platform remotely controls the interception and storage motor 123 to start, drives the interception and storage gate 122 to move along the interception and storage screw rod 121, thereby closing the slope dam water outlet 111, realizing the interception and storage of surface water at the high point of the karst peak cluster, slowing down the speed of flood convergence to the depression, increasing the infiltration of groundwater at the peak cluster gully outlet, thereby increasing the rainfall threshold that causes waterlogging, and reducing the risk of sinkholes in the depression. Flood discharge pressure and the degree of flooding in the depression; when the indoor data monitoring and processing platform detects through the rainfall monitoring station that the rainfall in the depression is less than the rainfall threshold value preset in the indoor data monitoring and processing platform, or when most of the surface water at the high point of the karst peak cluster intercepted and stored by the dam body 11 has infiltrated into the ground (this can be determined by a liquid level sensor, manual inspection, or a period of time after the rain stops), the indoor data monitoring and processing platform remotely controls the interception and storage motor 123 to start in reverse, driving the interception and storage gate 122 to move along the interception and storage screw rod 121, thereby opening the slope dam water outlet 111;

[0081] When the indoor data monitoring and processing platform monitors through the water level monitoring device 3 that the groundwater level of the depression is higher than the groundwater level critical value preset in the indoor data monitoring and processing platform, the indoor data monitoring and processing platform remotely controls the water retaining motor 221 to start, drives the water retaining gate 223 to move upward along the water retaining screw 222, thereby opening the concave water outlet 211, and drains the surface water that causes waterlogging into the sinkhole 23 through the depression drainage ditch 27, and then enters the underground karst pipeline 25 through the sinkhole 23 for discharge; when the indoor data monitoring and processing platform monitors through the water level monitoring device 3 that the groundwater level of the depression is lower than the groundwater level critical value preset in the indoor data monitoring and processing platform, the indoor data monitoring and processing platform remotely controls the water retaining motor 221 to start in reverse, drives the water retaining gate 223 to move downward along the water retaining screw 222, thereby closing the concave water outlet 211.

[0082] The present invention has the following advantages:

[0083] The present invention utilizes the topographical features and karst hydrogeological structure of the peak cluster depression, and realizes soil conservation and water storage through the cooperation of rainfall monitoring stations, intercepting dams and indoor data monitoring and processing platforms. By storing water and diverting floods, the rainfall threshold that causes waterlogging is increased, and the degree of waterlogging in the depression is effectively alleviated. At the same time, water retaining devices are built in the sinkholes where water flow is concentrated, and in conjunction with water level monitoring devices and indoor data monitoring and processing platforms, dynamic regulation of surface water and groundwater is achieved, extending the storage time of groundwater in the karst aquifer of the depression, giving play to the regulating and storage function of the karst aquifer of the depression, shortening the dry season time of the depression, and realizing comprehensive management of drought and waterlogging disasters in the peak cluster depression. The present invention utilizes new intelligent control technology, has a simple process, a small amount of engineering, is easy to implement, and has little damage to the ecological environment.

[0084] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0085] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0086] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0087] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0088] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0089] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A method for comprehensive control of drought and flood in karst peak cluster depressions, characterized in that: The following steps are involved: A dam (1) is built at the outlet of the Fengcong gully, and is remotely and wirelessly connected to the indoor data monitoring and processing platform; A water retaining device (2) is constructed in the sinkhole of the depression and is remotely and wirelessly connected to the indoor data monitoring and processing platform; A rainfall monitoring station is built in an open area of ​​the depression, and is remotely and wirelessly connected to the indoor data monitoring and processing platform to transmit rainfall information to the indoor data monitoring and processing platform in real time; A water level monitoring device (3) is built in the underground well of the depression, and is remotely and wirelessly connected to the indoor data monitoring and processing platform to transmit underground water level information to the indoor data monitoring and processing platform in real time; The indoor data monitoring and processing platform is used to remotely control the opening and closing of the impounding slope dam (1) and the water retaining device (2).

2. A method for comprehensive drought and flood control in karst peak cluster depressions according to claim 1, characterized in that: The indoor data monitoring and processing platform is used to remotely control the opening and closing of the intercepting and impounding slope dam (1) and the water retaining device (2), including: when the indoor data monitoring and processing platform monitors through the rainfall monitoring station that the rainfall in the depression is greater than the rainfall critical value preset in the indoor data monitoring and processing platform, the indoor data monitoring and processing platform remotely controls the intercepting and impounding slope dam (1) to close.

3. A method for comprehensive drought and flood control in karst peak cluster depressions according to claim 1, characterized in that: The indoor data monitoring and processing platform is used to remotely control the opening and closing of the retaining dam (1) and the water retaining device (2), including: when the indoor data monitoring and processing platform monitors through the water level monitoring device (3) that the groundwater level of the depression is higher than the groundwater level critical value preset in the indoor data monitoring and processing platform, the indoor data monitoring and processing platform remotely controls the water retaining device (2) to open.

4. A method for comprehensive drought and flood control in karst peak cluster depressions according to any one of claims 1 to 3, characterized in that: The intercepting and storing slope dam (1) comprises a dam body (11) and an intercepting and storing mechanism (12); a slope dam water outlet (111) for surface water to pass through is provided in the middle of the dam body (11); and the intercepting and storing mechanism (12) is movably mounted on the dam body (11).

5. A method for comprehensive drought and flood control in karst peak cluster depressions according to claim 4, characterized in that: The intercepting and storing mechanism (12) comprises: an intercepting and storing screw rod (121), an intercepting and storing gate (122) and an intercepting and storing motor (123); the intercepting and storing motor (123) is fixedly mounted on the dam body (11); its output shaft is transmission-connected to the intercepting and storing screw rod (121); the intercepting and storing motor (123) is remotely wirelessly connected to the indoor data monitoring and processing platform; the intercepting and storing screw rod (121) is rotatably mounted in the dam body (11); the intercepting and storing gate (122) is threadedly sleeved on the intercepting and storing screw rod (121) and is slidably matched with the dam body (11).

6. A method for comprehensive drought and flood control in karst peak cluster depressions according to any one of claims 1 to 3, characterized in that: The water retaining device (2) comprises a water retaining cofferdam (21) and a water retaining mechanism (22); the water retaining cofferdam (21) is a tubular structure arranged to fit the inner wall of a water hole (23); a concave water outlet (211) is provided on the upper side wall of the water retaining cofferdam (21); the concave water outlet (211) is a through hole connecting a low-lying drainage ditch (27) and the water hole (23); the water retaining mechanism (22) is mounted on the water retaining cofferdam (21) and is adaptively connected to the concave water outlet (211).

7. A method for comprehensive drought and flood control in karst peak cluster depressions according to claim 6, characterized in that: The water retaining mechanism (22) comprises: a water retaining motor (221), a water retaining screw rod (222), a water retaining gate (223) and a support frame (224); the support frame (224) is fixedly mounted on the top of the water retaining cofferdam (21); the water retaining motor (221) is fixedly mounted on the support frame (224); the output shaft of the water retaining motor (221) is transmission-connected to the water retaining screw rod (222); the water retaining motor (221) is remotely wirelessly connected to the indoor data monitoring and processing platform; the water retaining gate (223) is vertically arranged and threadedly sleeved on the water retaining screw rod (222); and the water retaining gate (223) is slidingly connected to the concave water outlet (211).

8. A method for comprehensive control of drought and flood in karst peak cluster depressions according to any one of claims 1 to 3, characterized in that: The water level monitoring device (3) comprises a water level monitoring pipe (31), a protective cover (32) and a monitoring mechanism (33); a plurality of steel nail snares (312) are sleeved on the side wall of the water level monitoring pipe (31) at intervals along the axial direction; the water level monitoring pipe (31) is fixedly mounted on the inner wall of an underground karst well in a depression through the steel nail snares (312); the monitoring mechanism (33) is arranged in the water level monitoring pipe (31); the protective cover (32) is fixedly mounted on the top end of the water level monitoring pipe (31); and the protective cover (32) is sealedly connected to the water level monitoring pipe (31).

9. A method for comprehensive drought and flood control in karst peak cluster depressions according to claim 8, characterized in that: The water level monitoring tube (31) is a tubular structure with a closed bottom end. A plurality of water inlet holes (311) are circumferentially arranged on the lower side wall of the water level monitoring tube (31), and the water inlet holes (311) are through holes.

10. A method for comprehensive drought and flood control in karst peak cluster depressions according to claim 8, characterized in that: The monitoring mechanism (33) comprises: a water level meter (331), a data line (332) and a wireless transmitter (333); the water level meter (331) and the data line (332) are both arranged in the water level monitoring tube (31); the water level meter (331) is arranged below the inside of the water level monitoring tube (31); the wireless transmitter (333) is fixedly mounted on the top of the water level monitoring tube (31) and arranged in the protective cover (32); the wireless transmitter (333) is remotely wirelessly connected to the indoor data monitoring and processing platform; the top and bottom ends of the data line (332) are connected to the wireless transmitter (333) and the water level meter (331) in a one-to-one correspondence.

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