Natural riverbed infiltration water extraction integrated system and its design method

Abstract

The present invention proposes a natural riverbed infiltration water extraction integrated system and a design method thereof. The natural riverbed infiltration water extraction integrated system is an integrated water extraction system formed by arbitrarily combining at least two water extraction methods including tube well water extraction, large well water extraction, radiation well water extraction, infiltration channel water extraction, sunken artificial filter tank water extraction, and reverse infiltration water extraction. According to the actual conditions of the natural riverbed, the present invention selects two or more water extraction methods to be combined into a new type of system water extraction method to achieve efficient, low-cost, and large-scale exploitation of natural riverbed groundwater. The integrated system is suitable for river sections with various complex geological conditions. It focuses on breaking the limitations of traditional, single water extraction methods on geological conditions and construction conditions, efficiently expanding water production, and ensuring excellent water quality. Through sensors and Internet of Things technology, it works in coordination with the control recoil system to form a highly automated integrated water extraction system.

Description

Technical Field

[0001] The invention belongs to the technical field of water intake, and in particular relates to a natural riverbed infiltration water intake integrated system and a design method thereof. Background Art

[0002] The freshwater resources on the earth mainly include surface water, groundwater, and undercurrent water located at the interaction interface between surface water and groundwater.

[0003] Riverbed subsurface water is the "third water body" besides surface water and groundwater. It is a shallow underground flowing water body that exists in the natural gravel layer of the riverbed. There are gaps between the gravel and the sand, which allows the gravel layer to store water. Its main characteristics are: riverbed subsurface water is mainly replenished by vertical infiltration of surface water, with a short replenishment distance, pressure-bearing capacity, large flow rate, excellent water quality and good fluidity in a specific three-dimensional direction. Riverbed infiltration water extraction is to create a reverse water extraction system under the riverbed to take the subsurface water that meets the standards to the surface. Therefore, the infiltration water extraction process is also a "transportation process of nature". Therefore, based on the unsafe factors of surface water and the strict control of groundwater extraction, the exploitation of riverbed subsurface water is particularly important to alleviate my country's water resources problems. Summary of the invention

[0004] The present invention aims to solve the technical problems existing in the prior art. The first purpose of the present invention is to provide a natural riverbed infiltration water extraction integrated system. The second purpose of the present invention is to provide a design method for the aforementioned natural riverbed infiltration water extraction integrated system.

[0005] To achieve the above-mentioned first purpose, the present invention adopts the following technical scheme: an integrated water intake method formed by any combination of at least two water intake methods including water intake from tube wells, water intake from large wells, water intake from radial wells, water intake from infiltration channels, water intake from sunken artificial filters, and water intake from reverse infiltration.

[0006] In the above technical scheme, according to the natural riverbed topography, hydrological conditions, geological conditions and actual on-site construction conditions, two or more water extraction methods are selected from pipe wells, large wells, radiation wells, infiltration channels, submerged artificial filters and percolation, forming a new type of combined water extraction method to achieve efficient, low-cost and large-scale exploitation of natural riverbed subsurface water. Moreover, compared with the exploitation of surface water, the exploited riverbed subsurface water has good water quality and stable water temperature, and can be used for water source heat pumps; compared with the exploitation of groundwater, the exploitation of riverbed subsurface water is large, which minimizes the environmental geological damage caused by groundwater exploitation.

[0007] The present invention utilizes the natural characteristics of natural river channels, such as high water level, high water pressure, high turbidity and high sand content during flood season, and low water level, low water pressure and good water quality during dry season, to achieve mutual conversion between natural riverbed subsurface water and percolation water from artificial filter ponds along the river.

[0008] In a preferred embodiment of the present invention, the natural riverbed infiltration water extraction integrated system includes a water collection shaft, a water intake borehole, a connecting borehole, a water transfer channel, a control system, and a backwash system; the natural riverbed infiltration water extraction integrated system also includes at least two of a water intake chamber, a large well, a radial well, a tube well, a sunken artificial filter tank, and an infiltration channel; the water intake chamber, the tube well, the large well, the radial well, the sunken artificial filter tank, and the infiltration channel are all water intake structures, and the water intake structures are connected to the water collection shaft through the water transfer channel, and the water intake structures are also connected through the water transfer channel.

[0009] In a preferred embodiment of the present invention, different types of water intake structures are connected in series and / or in parallel and then connected to a water collection shaft, and the same type of water intake structures are also connected in series and / or in parallel and then connected to a water collection shaft; and / or the water transfer channel includes a pipe with no holes around it, a cylindrical filter or an infiltration channel.

[0010] In a preferred embodiment of the present invention, a control system and a recoil system are provided in the radiation well and / or the water collection shaft. The recoil system provides pressurized water or compressed air. The pressurized water is formed by pressurizing a water pump or forms water pressure by its own weight. When a water intake chamber and / or a radiation well are provided, a water intake valve is provided on the percolation water intake pipe connected to the water intake chamber / radiation well and extending into the aquifer. The water intake valve is provided at the outlet end of the percolation water intake pipe. All or part of the percolation water intake pipe is connected to a recoil pipe connected to the recoil system. The percolation water intake pipe connected to the recoil pipe is A water intake valve and a backwash valve are arranged on the pipe at the same time, and the backwash system provides pressurized water or compressed air to the backwash pipe; when a sunken artificial filter is arranged, the backwash system is connected with a backwash pipe which extends into the sunken artificial filter to backwash the sunken artificial filter, a backwash valve is arranged on the backwash pipe, and the backwash system provides pressurized water or compressed air to the backwash pipe; when an infiltration channel is arranged, a water intake valve is arranged on the infiltration channel, the backwash system is connected with a backwash pipe which is connected with the infiltration channel, a backwash valve is arranged on the backwash pipe, and the backwash system provides pressurized water or compressed air to the backwash pipe.

[0011] In the above technical solution, the water quality and quantity are controlled by controlling the opening and closing of the water intake valve, and the backwash system is used to restore the water quantity. The backwash system backwashes the infiltration water intake pipe, the sunken artificial filter tank, and the infiltration channel connected to the water intake chamber and the radiation well to remove siltation, increase the water output of the water intake structure, and extend the service life of the water intake structure.

[0012] In a preferred embodiment of the present invention, the tube well, the large well and the radial well are all water intake wells, and the water intake well and / or the water collection shaft are provided with a first turbidity meter for detecting the turbidity of the water in the well and a water level meter for detecting the water level in the well, and the signal output ends of the first turbidity meter and the water level meter are both connected to the remote monitoring device.

[0013] In the above technical solution, by setting up a turbidity meter and a water level meter, it is convenient to obtain the turbidity and water level of the well water in real time, which is reflected in the well water quality and water production, and automatic control is achieved through logic design. When the turbidity value of the well water measured by the first turbidity meter is higher than the set value, and the water level measured by the water level meter is higher than the set value, that is, the water quality is poor and the water production is large, close the water intake valve of some filters where the water quality is poor measured by the second turbidity meter, and close the backwash valve; when the turbidity value of the well water measured by the turbidity meter is lower than the set value, and the water level measured by the water level meter is lower than the set value, that is, the water quality is good and the water production is insufficient, close the backwash valve and open all the water intake valves; when the turbidity value of the well water measured by the first turbidity meter is higher than the set value, and the water level measured by the water level meter is lower than the set value, that is, the water quality is poor and the water production is insufficient, close the water intake valve, open the backwash valve, backwash the water intake structure, and realize automatic backwashing; when the turbidity value of the well water measured by the first turbidity meter is lower than the set value, and the water level measured by the water level meter is higher than the set value, that is, the water quality is good and the water production is sufficient, open all the water intake valves and close the backwash valve.

[0014] In another preferred embodiment of the present invention, a second turbidity meter for detecting water turbidity is provided on the infiltration water intake pipe connected to the water intake chamber and / or the radiation well and / or the sunken artificial filter tank and / or the water collection shaft and extending into the aquifer, and a second turbidity meter for detecting water turbidity is also provided on the infiltration channel, and the signal output end of the second turbidity meter is connected to the remote monitoring device.

[0015] In the above technical solution, a second turbidity meter is provided to facilitate water plants, water supply management agencies and water quality monitoring agencies to obtain real-time information on the turbidity of water in each infiltration water intake pipe and each infiltration channel, to remotely control the opening and closing and backwashing of valves (water intake valves and backwash valves), and to open or close the infiltration water intake pipe according to the situation.

[0016] In another preferred embodiment of the present invention, it also includes a controller connected to the remote monitoring device; the first group of input ends of the controller are electrically connected to the signal output ends of the first turbidity meter, the second group of input ends of the controller are electrically connected to the signal output ends of the water level meter, and the third group of input ends of the controller are electrically connected to the signal output ends of the second turbidity meter; the first group of control ends of the controller are electrically connected to the water intake valves in sequence, and the water intake valves are controlled independently or in groups, and the second group of control ends of the controller are electrically connected to the backflush valves in sequence, and the backflush valves are controlled independently or in groups.

[0017] In the above technical solution, after the controller is set, the opening, closing and backwashing of the infiltration water intake pipe can be automatically controlled, with a high degree of automation; and the detection values ​​of the first turbidity meter, the water level meter and the second turbidity meter can be remotely transmitted to the water plant, water supply management agency and water quality monitoring agency, so that they can understand the water quantity and water quality of the water intake structure and take emergency measures in time.

[0018] In another preferred embodiment of the present invention, a water intake valve is provided at the end where the water conveyance channel is connected to the water intake structure; and / or a sunken artificial filter is provided in the riverbed, or below a drainage ditch excavated from the floodplain at the side of the river channel.

[0019] In another preferred embodiment of the present invention, the infiltration channel is formed by connecting a plurality of tubular filters, and the infiltration channel is distributed in the riverbed along a straight line or a curve;

[0020] When the infiltration channel is distributed in a curved manner in the riverbed, two adjacent tubular filters are flexibly connected by a bellows, and both ends of the bellows are fixedly connected to the two tubular filters respectively;

[0021] A limiting unit is also provided between two adjacent tubular filters to prevent the bellows from excessive stretching and deformation. The limiting unit includes fixed blocks respectively provided on the inner walls of the two tubular filters. The fixed blocks are provided with through holes provided therethrough. A connecting rod is inserted into the through holes of the two fixed blocks and the connecting rod can move in the through holes. Both ends of the connecting rod are respectively located outside the two fixed blocks. A limiting piece is connected to the end of the connecting rod located outside the fixed block to prevent the connecting rod from detaching from the fixed block. There is a certain distance between the limiting piece and the fixed block.

[0022] In the above technical solution, the flexible connection between the two adjacent tubular filters can better meet the curve deformation requirements of the infiltration channel path design. The infiltration channel can be curved according to the thickness development and plane distribution of the aquifer, and it is not necessary to build the infiltration channel in the rock layer, which is equivalent to extending the effective length of the tubular filter and increasing the water production; or shortening the length of the infiltration channel and shortening the construction period under the premise of unchanged water production. The setting of the limit unit can prevent the bellows from being damaged by excessive stretching and deformation, which is a safety protection measure. The connecting rod passes through the perforation on the fixed block to connect the two tubular filters, and then the degree of stretching of the bellows is limited by the limiter, so that the corrugated structure will not be damaged by excessive stretching and deformation.

[0023] To achieve the above second purpose, the present invention adopts the following technical scheme: a design method for an integrated system for natural riverbed infiltration water extraction, which selects tube well water extraction, large well water extraction, radial well water extraction, infiltration channel water extraction, sunken artificial filter water extraction, and reverse infiltration water extraction according to the topography, hydrology, geological conditions and actual on-site construction conditions:

[0024] In river sections where the natural riverbed has a thick layer of sand and gravel, the bedrock is stable and cracks are not developed, or when the river is not convenient for surface construction due to factors such as navigation and water depth, water can be extracted by tube wells, large wells, radial wells or riverbed reverse infiltration water extraction technology;

[0025] In river sections where the thickness of the natural riverbed sand and gravel layer is relatively thin, the surface water quality of the river is good, the river depth is relatively small, and the river channel or bank is convenient for surface construction, water can be taken through infiltration channels;

[0026] In areas where the sand and gravel layer is very thin or there is no sand and gravel layer on the bank, a sunken artificial filter can be used to draw water.

[0027] Compared with the existing technology, the present invention has the following beneficial effects: the integrated system is applicable to river sections with various complex geological conditions, and mainly breaks the limitation of the traditional single water intake method due to geological conditions and construction conditions, effectively expands the water production, and ensures excellent water quality. Through sensors and Internet of Things technology, it works in coordination with the control backwash system to form a highly automated integrated water intake system.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1 It is a plan view of the natural riverbed infiltration water extraction integrated system of Example 1.

[0031] Figure 2 It is a partial end view schematic diagram of the natural riverbed infiltration water extraction integrated system of Example 1.

[0032] Figure 3 It is a cross-sectional schematic diagram of the connection between the radiation well and the water intake chamber in the first embodiment.

[0033] Figure 4 It is a top view schematic diagram of setting a water collection well in a radial well.

[0034] Figure 5 It is a cross-sectional schematic diagram of the infiltration channel in the second embodiment arranged in the riverbed.

[0035] Figure 6 This is a schematic diagram of a top view of the infiltration channel in the second embodiment. Figure 1 .

[0036] Figure 7 This is a schematic diagram of a top view of the infiltration channel in the second embodiment. Figure 2 .

[0037] Figure 8 This is a schematic diagram of a top view of the infiltration channel in the second embodiment. Figure 3 .

[0038] Fig. 9 It is a cross-sectional schematic diagram of the connection of two adjacent tubular filters in the first embodiment.

[0039] Fig.10 This is a state diagram when two adjacent tubular filters are bent and deformed.

[0040] Fig.11 yes Fig. 9 AA section view in .

[0041] Fig.12 It is a cross-sectional schematic diagram of the drilling and hole-forming process for constructing an infiltration channel in Example 3 of the present application, in which a working well is set up.

[0042] Fig.13 It is a cross-sectional schematic diagram of the expansion of the infiltration channel and the installation of the tubular filter in the third embodiment of the present application, in which a working well is set up.

[0043] Fig.14 It is a top view schematic diagram of an artificial filter bed provided in a riverbed according to the fourth embodiment of the present application.

[0044] Fig.15 It is a cross-sectional schematic diagram of the fourth embodiment of the present application in which an artificial filter bed is provided in the riverbed.

[0045] The reference numerals in the drawings of the specification include: infiltration channel 100, tubular filter 110, bellows 120, limiting unit 130, fixing block 131, perforation 1311, connecting rod 132, limiting member 133, power equipment 140, guide drill 150, hole expansion equipment 160, working well 170, water intake well 200, pipe well 200a, large well 200b, radiation well 200c, water intake hole 201, connecting pipe 202, first turbidity meter 204, water level meter 205, water collection well 210, water inlet hole 211, infiltration water intake pipe 230, second turbidity meter 231, sunken artificial filter 300, river channel 310, dam 311, floodplain Beach 312, dam 313, drainage ditch 320, drainage ditch inlet 321, drainage ditch outlet 322, filter tank structure 330, plate filter 331, infiltration layer 332, pebble layer 3321, coarse sand and gravel layer 3322, small pebble and gravel layer 3323, water collection tank 333, backwash main pipe 3341, backwash branch pipe 3342, backwash main branch pipe 3343, water delivery main pipe 3351, water delivery branch pipe 3352, water delivery main branch pipe 3353, water collection well 336, water intake chamber 400, water collection shaft 500, water delivery channel 600, connecting borehole 610, water intake valve 700, backwash pipe 810, backwash valve 820, aquifer a. DETAILED DESCRIPTION

[0046] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0047] In the description of the present invention, it is to be understood that the terms “longitudinal”, “lateral”, “vertical”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” etc., indicating orientations or positional relationships, are 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, and do not indicate or imply 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 a limitation on the present invention.

[0048] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0049] Embodiment 1

[0050] This embodiment provides a natural riverbed infiltration water extraction integrated system, such as Figure 1 As shown, in a preferred embodiment of the present invention, the natural riverbed infiltration water extraction integrated system is an integrated water extraction system in the form of a combination of water extraction methods constructed according to the natural riverbed topography, hydrology and geological conditions. The water extraction method is an integrated water extraction method formed by any combination of at least two of the following water extraction methods: tube well water extraction, large well water extraction, radial well water extraction, infiltration channel water extraction, sunken artificial filter tank water extraction, and reverse infiltration water extraction. The combination of specific water extraction methods can be a combination of any two water extraction methods, any three water extraction methods, any four water extraction methods, any five water extraction methods, or a combination of the aforementioned six water extraction methods; the number and position of each water extraction method are arbitrary.

[0051] It should be noted that water extraction from tube wells, large wells, radial wells, infiltration channels, sunken artificial filters and reverse infiltration are all existing water extraction methods, and their water extraction principles are not described in detail here.

[0052] Specifically, in river sections where the natural riverbed has a thick sand and gravel layer (the thickness of the sand and gravel layer is greater than 5 meters), the bedrock is stable and cracks are not developed, or when the river is not convenient for surface construction due to factors such as navigation and water depth, water can be extracted by using tube wells, large wells, radial wells or riverbed reverse infiltration water extraction technology.

[0053] In the river section where the thickness of the natural riverbed gravel layer is thin (the thickness of the gravel layer is 3-5 meters), the surface water quality of the river is good, the river depth is relatively small, and the river channel or bank is convenient for surface construction, water can be taken by infiltration channel. This process has a short construction period and can be fully closed after the river channel is constructed, without affecting the river channel landscape. The water output is large, the water quality is excellent, the turbidity is less than 5°, and it meets the sanitary standards for drinking water after simple filtration and disinfection.

[0054] In areas with a very thin gravel layer (less than 3 meters thick) or without gravel layers on the banks, a sunken artificial filter can be used to take water. This process has a wide range of applications and is usually used for small-volume water production or water replenishment, and is often used in combination with radiation well water intake and natural riverbed reverse infiltration water intake processes.

[0055] The choice of water extraction technology is subject to force majeure factors such as hydrological and geological conditions, as well as the subjective wishes of the owner.

[0056] The integrated water intake system of the present invention realizes efficient, low-cost, large-scale exploitation of natural riverbed subsurface water, and is used for domestic water, municipal water, industrial water and water source heat pump water supply projects.

[0057] Specifically, Figure 1 and Figure 2As shown, the infiltration water intake integrated system includes a water collection shaft 500, a water intake borehole, a connecting borehole 610, a water delivery channel 600, a control system, and a backwash system. The infiltration water intake integrated system also includes at least two of a water intake chamber 400, a pipe well 200a, a large well 200b, a radial well 200c, a sunken artificial filter 300, and an infiltration channel 100. The water intake chamber 400, the pipe well 200a, the large well 200b, the radial well 200c, the sunken artificial filter 300, and the infiltration channel 100 are all water intake structures, and the number and position of each water intake structure are determined according to actual conditions. Specifically, two or more water intake structures can be selected from the water intake chamber 400, the pipe well 200a, the large well 200b, the radial well 200c, the sunken artificial filter 300 and the infiltration channel 100 according to the natural riverbed topography, hydrology, geological conditions and actual on-site construction conditions. The pipe well 200a, the large well 200b and the radial well 200c are collectively referred to as water intake wells. Among them, the infiltration channel 100 should be equipped with an inspection well as required, and the infiltration channel 100 can be set on the bank or in the river. When the infiltration channel 100 is buried in a shallow aquifer, the infiltration channel 100 can be installed in the aquifer manually; when the infiltration channel 100 is buried in a deep aquifer, the synchronous pipe drilling technology is used for installation. Each water intake method can be equipped with a control system and a backwash system according to needs.

[0058] In practice, two or even more water intake structures can be set up according to the demand for water intake; water intake structures can also be flexibly set up according to the thickness development and plane distribution of the aquifer, and the types of water intake structures can be the same or different.

[0059] The water intake structure is connected to the water collection shaft through the water delivery channel 600 and / or the connecting borehole 610. The water intake structures are also connected to each other through the water delivery channel 600 and / or the connecting borehole 610. The end where the water delivery channel 600 and / or the connecting borehole 610 connects to the water intake structure is provided with a water intake valve 700. The water infiltrated by each water intake structure is finally collected in the water collection shaft 500. Figure 2 and Figure 3 As shown, as needed, the side wall of the water collection shaft 500 can also be connected to a percolation water intake pipe 230 extending into the aquifer, so that the water collection shaft 500 becomes a radiation well, which is also a water intake structure.

[0060] Among them, Figure 1As shown, the connection borehole 610 is a through hole drilled in the riverbed with a drill bit for connection, which only has the function of water transmission and is suitable for short-distance connection. For example, the connection between the infiltration channel 100, the sunken artificial filter 300, the pipe well 200a, the large well 200b and the radial well 200c close to the water collection shaft 600 can adopt the connection borehole 610. The water intake borehole is a borehole in which a cylindrical filter is laid, that is, the water intake borehole has the functions of water transmission and water intake. For example, the infiltration water intake pipe 230 connected to the water intake chamber 400 and the radial well 200c and extending into the aquifer is a water intake borehole. In the drilling construction of the specific water intake borehole, the synchronous pipe drilling technology is adopted to install the filter intact at the designed aquifer position. Long distance connections that cannot be made by drilling can be made by water transfer channel 600, such as the connection between water intake chamber 400 and water collection shaft 500, and water intake chamber 400 and water intake chamber 400. Water transfer channel 600 includes a pipe with no holes around it, a cylindrical filter or an infiltration channel. Water transfer channel 600 is installed in the riverbed by building a tunnel or jacking pipe.

[0061] like Figure 1 and Figure 2 As shown, in this embodiment, different types of water intake structures are connected in series and / or in parallel and then connected to the water collection shaft 500, and the same type of water intake structures are also connected in series and / or in parallel and then connected to the water collection shaft 500. For example, when there are multiple water intake chambers 400, multiple water intake chambers 400 are connected in series and / or in parallel (referred to as series-parallel) through water conveying channels 600 and then connected to the water collection shaft 500, and the water in the water intake chambers 400 is collected in the water collection shaft 500. For another example, when there are multiple water intake wells, multiple water intake wells are connected in series and in parallel through drilling connections 610 and then connected to the water collection shaft 500, and the water in the water intake wells is collected in the water collection shaft 500.

[0062] In another preferred embodiment of the present invention, a control system and a backwash system (not shown in the figure) are provided in the radiation well 200c. The backwash system provides a fluid with pressure, such as pressurized water or compressed air. The pressurized water can be formed by a water pump or water pressure can be formed by its own weight. When the water backwashes by its own weight, the water level of the backwash water source is higher than the water level of the riverbed. The backwash water source can be a water inlet channel or a water storage device erected to a certain height.

[0063] like Figure 3 As shown, it should be noted that when the water supply channel 600 connected to the water collection shaft 500 is a tubular filter or the side wall of the water collection shaft 500 is connected to the infiltration water intake pipe 230, a backwash system can also be set in the water collection shaft 500 to achieve backwashing of the tubular filter or the infiltration water intake pipe 230 connected to the water collection shaft 500.

[0064] As shown in FIG. 3 , when a water intake chamber 400 and a radiation well 200c are provided, a water intake valve 700 is provided on the percolation water intake pipe 230 extending into the aquifer a and connected to the water intake chamber 400, the radiation well 200c and the water collection shaft 500. All or part of the percolation water intake pipe 230 is connected to a backwash pipe (not shown in the figure) connected to the backwash system, and the percolation water intake pipe 230 connected to the backwash pipe is provided with a water intake valve 700 and a backwash valve 820 at the same time, and the backwash system provides pressurized water or compressed air to the backwash pipe 810.

[0065] When it is necessary to backwash the infiltration water intake pipe 230, close the water intake valve 700 on the infiltration water intake pipe 230 to stop the water production of the infiltration water intake pipe 230, and then open the backwash valve 820 on the infiltration water intake pipe 230. The backwash system will work to transport the pressure fluid (pressure water or compressed air) to the backwash pipe. The pressure fluid in the backwash pipe enters the inside of the infiltration water intake pipe 230. The pressure fluid backwashes the wall of the infiltration water intake pipe 230 and the blockages in the surrounding water intake layer, thereby reducing the blockage of the infiltration water intake pipe 230.

[0066] In this embodiment, the water intake valve 700 and the backflush valve 820 may be water-controlled, air-controlled or electric-controlled valves in the prior art.

[0067] like Figure 3 As shown, in this embodiment, the water intake valve 700 is arranged at the beginning of the infiltration water intake pipe 230 extending into the aquifer a. After the infiltration water intake pipe 230 is closed, the groundwater in the aquifer a cannot enter the infiltration water intake pipe 230. When the infiltration water intake pipe 230 is arranged beside a river or in a riverbed, and the infiltration water intake pipe 230 is fully extended into the aquifer a, the water intake valve 700 is arranged at the end of the infiltration water intake pipe 230 connected to the radiation well 200c; when the infiltration water intake pipe 230 partially extends into the aquifer a, the water intake valve 700 is arranged at the junction of the aquifer a and the bedrock layer on the infiltration water intake pipe 230.

[0068] like Figure 3 As shown, in this embodiment, when the percolation water intake pipe 230 is connected to the radiation well 200c, the backwash system is arranged in the radiation well 200c, and preferably the backwash valve 820 is arranged at the end where the percolation water intake pipe 230 is connected to the radiation well 200c. When the percolation water intake pipe 230 is connected to the water intake chamber 400, the backwash system is arranged in the water intake chamber 400, and preferably the backwash valve 820 is arranged at the end where the percolation water intake pipe 230 is connected to the water intake chamber 400 or the backwash valve 820 is arranged at the beginning where the percolation water intake pipe 230 extends into the aquifer a.

[0069] like Fig.14As shown, when the sinking artificial filter 300 is set, the backwash system is connected with a backwash pipe 810 extending into the sinking artificial filter 300 to backwash the sinking artificial filter 300, a backwash valve 820 is arranged on the backwash pipe 810, and the backwash system provides pressurized water or compressed air to the backwash pipe 810. When the sinking artificial filter 300 needs to be backwashed, the water production work of the sinking artificial filter 300 is stopped, and then the backwash valve 820 on the backwash pipe 810 is opened, and the backwash system works to transport the pressure fluid to the backwash pipe 810, and the pressure fluid of the backwash pipe 810 enters the sinking artificial filter 300, and the pressure fluid backwashes the sinking artificial filter 300, thereby reducing the blockage of the sinking artificial filter 300.

[0070] When the infiltration channel 100 is used to take water, the backwash system is connected to a backwash pipe in communication with the infiltration channel 100 . Preferably, a plurality of backwash pipes are arranged around the infiltration channel to restore the water production of the infiltration channel 100 .

[0071] In this embodiment, the backwashing of the water intake structure can be performed regularly or according to the turbidity of the water in the water intake structure. To ensure continuous water supply, it is preferred that the backwashing of each water intake structure be staggered.

[0072] In another preferred embodiment of the present invention, when backwashing is performed according to the turbidity of the water in the water intake structure, Figure 3 As shown, a first turbidity meter 204 for detecting the turbidity of water quality in the well and a water level meter 205 for detecting the water level in the well are provided in the water intake well (tube well 200a, large well 200b and radiation well 200c), and the signal output ends of the first turbidity meter 204 and the water level meter 205 are both connected to the remote monitoring device. The first turbidity meter 204 detects the change of turbidity of water quality, and the water level meter 205 detects the change of the water level in the well to detect the change of water volume.

[0073] When the first turbidity meter 204 measures that the turbidity value of the water in the well is lower than the set value (lower than the turbidity value of normal drinking water, the specific value is set according to the actual situation), and the water level meter 205 measures that the water level in the well is lower than the set value (lower than the minimum water level set for the well), it means that the filtration water intake pipe 230 or the tubular filter 110 (hereinafter referred to as the filtration pipe) connected to the well is blocked, resulting in a decrease in water output, and at the same time, the water quality after filtration is better and the turbidity of the water is reduced. At this time, the water intake valve 700 on the filtration pipe is closed, and the corresponding backflush valve 820 is opened at the same time, and the pressure fluid enters the backflush pipe 810 to backwash the filtration pipe and increase the water production of the water intake well.

[0074] like Figure 5As shown, according to needs, a first turbidity meter 204 for detecting the turbidity of water quality in the well and a water level meter 205 for detecting the water level in the well can also be set in the water collection shaft 500 to obtain the turbidity of the water extracted by the natural riverbed infiltration water extraction integrated system and the well water level.

[0075] like Figure 3 As shown, in another preferred embodiment of the present invention, a second turbidity meter 231 for detecting water turbidity is provided on the infiltration water intake pipe 230 connected to the water intake chamber 400 and / or the radiation well 200c and / or the water collection shaft 500 and extending into the aquifer a, and a second turbidity meter 231 for detecting water turbidity is also provided on the infiltration channel 100, and the signal output end of the second turbidity meter 231 is connected to the remote monitoring device. This facilitates real-time knowledge of the turbidity of water in each infiltration water intake pipe 230 and the infiltration channel 100, and opens or closes the infiltration water intake pipe 230 and the infiltration channel 100 according to the situation, realizes remote control of the opening and closing of the water intake valve 700 and the backwash valve 820, and remotely controls the backwashing.

[0076] It should be noted that when a percolation water intake pipe 230 is also inserted into the submerged artificial filter 300 , a second turbidity meter 231 for detecting water turbidity is also provided on the percolation water intake pipe 230 connected to the submerged artificial filter 300 .

[0077] In another preferred embodiment of the present invention, the natural riverbed infiltration water intake integrated system further comprises a controller (not shown in the figure) connected to the remote monitoring device. The first group of input ends of the controller are respectively electrically connected to the signal output ends of the first turbidity meter 204, the second group of input ends of the controller are respectively electrically connected to the signal output ends of the water level meter 205, and the third group of input ends of the controller are respectively electrically connected to the signal output ends of the second turbidity meter 231. The first group of control ends of the controller are respectively electrically connected to the water intake valve 700 in sequence, and the water intake valve 700 is controlled independently or in groups, and the second group of control ends of the controller are respectively electrically connected to the backflush valve 820 in sequence, and the backflush valve 820 is controlled independently or in groups.

[0078] The water intake valve 700 and the backflush valve 820 of this embodiment are controlled in groups, and can be divided into several groups from high to low or from low to high according to the turbidity of the water quality in the infiltration water intake pipe 230; during the flood season, the water intake valve 700 is closed starting from the group with the highest turbidity of the water quality in the infiltration water intake pipe 230; during the dry season, the water intake valve 700 is opened starting from the group with the lowest turbidity of the water quality in the infiltration water intake pipe 230 according to the water intake volume.

[0079] like Figure 4As shown, in another preferred embodiment of the present invention, a water collection well 210 is set in the water intake well 200 (including the pipe well 200a, the large well 200b and the radial well 200c), and the water intake well 200 and the water collection well 210 form a double-ring well structure, and the tops of the water intake well 200 and the water collection well 210 are open or closed with one well cover or two well covers respectively. The side wall of the water intake well 200 has a water intake hole 201, and the side wall of the water collection well 210 has a water inlet hole 211; the water outlet port of the water conveyance channel 600 is connected with the water intake hole 201, and the water intake hole 201 is connected with the water inlet hole 211 through the connecting pipe 202, and a water intake valve 700 is set on the connecting pipe 202 between the water intake well 200 and the water collection well 210.

[0080] The present invention adds a collection well 210 in the water intake well 200, and the collection well 210 is used to collect water from the water intake hole 201 of the water intake well 200. The collection well 210 is used as a water storage facility, and the water level meter 205 and the first turbidity meter 204 are arranged in the collection well 210. During water supply, only the collection well 210 has water, and there is no water in the water intake well 200 outside the collection well 210, and water is only supplied by the collection well 210; during maintenance and overhaul, the water intake valve 700 in the water intake well 200 outside the collection well 210 is closed (the water intake valve 700 is a control valve and can be closed remotely), and then the worker goes down to the water intake well 200 to check and replace the water intake hole equipment, and the water supply of the water intake well 200 is not affected during maintenance and overhaul.

[0081] It should be noted that the water collection shaft 500 can also be set as a double-ring casing structure, which will not affect the water supply of the water collection shaft 500 during maintenance and inspection. The water pump group is arranged in the water collection shaft 500 outside the water collection well 210.

[0082] Embodiment 2

[0083] This embodiment provides an infiltration channel that can be used in the first embodiment, such as Figure 5 As shown, the infiltration channel 100 is buried in the riverbed. The infiltration channel 100 is formed by connecting a plurality of tubular filters 110. The infiltration channel 100 is distributed in the riverbed in a straight line or in a curved manner. A working well 170 is provided on the path of the infiltration channel 100. The working well 170 can be used as a launching well and a receiving well for constructing the infiltration channel 100, and can also be used as a water collection well. When the infiltration channel 100 is distributed in the riverbed in a straight line, two adjacent tubular filters 110 are fixedly connected as one body by a rigid connection method, such as welding or bolting.

[0084] like Figure 5 and Fig.13 As shown, in this embodiment, the infiltration channel 100 is entirely or partially set in the aquifer a, and the part of the infiltration channel 100 set in the aquifer a is entirely or segmentally a tubular filter 110, and the specific diameter and installation length of the tubular filter 110 are set according to the water production demand. Fig.13When the infiltration channel 100 shown is partially disposed in the aquifer a, the portion of the infiltration channel 100 located outside the aquifer a is a tubular filter or a barrel-shaped structure without holes, and the present invention does not impose any specific limitation thereto.

[0085] like Figure 6-Figure 8 As shown, in this embodiment, both ends of the infiltration channel 100 are located on the same side of the riverbed or on both sides of the riverbed. The number of the working wells 170 is one, two or more, and the two or more working wells 170 are arranged on the same side or opposite sides of the riverbed.

[0086] like Fig. 9 and Fig.10 As shown, when the infiltration channel 100 is curvedly distributed in the riverbed, two adjacent tubular filters 110 are flexibly connected by a bellows 120, and both ends of the bellows 120 are fixedly connected to the two tubular filters 110, respectively, so that a certain degree of bending deformation can be achieved between the two adjacent tubular filters 110, and the movable displacement of the connection between the tubular filters 110 can be achieved, which facilitates the flexible setting of the infiltration channel 100. The bellows 120 is made of steel or rubber, and preferably the end face of the bellows 120 is sealed and connected to the end face of the tubular filter 110, so that the sealing between the tubular filters 110 is guaranteed.

[0087] The present invention arranges a bellows 120 between two adjacent tubular filters 110. The bellows 120 absorbs deformation, so that a certain degree of bending deformation can be achieved between the two adjacent tubular filters 110 to adapt to the turning of the infiltration channel 100 or the bending deformation of the tunnel due to external force.

[0088] In this embodiment, water intake valves 700 are provided at both ends of the infiltration channel 100, and the water intake valves are arranged in the working well 170. The backwash system is connected to a backwash pipe 810 connected to the infiltration channel 100, and a backwash valve 820 is arranged on the backwash pipe 810. The backwash system provides pressurized water or compressed air to the backwash pipe 810.

[0089] When the infiltration channel 100 needs to be backflushed, the water intake valves 700 at both ends of the infiltration channel 100 are closed to stop the water production of the infiltration channel 100, and then the backflushing valve 820 on the backflushing pipe 810 is opened. The backflushing system works to deliver the pressure fluid to the backflushing pipe 810, and the pressure fluid in the backflushing pipe 810 enters the infiltration channel 100. The pressure fluid backflushes the infiltration channel 100 to reduce the blockage of the infiltration channel 100.

[0090] like Fig. 9 and Fig.10 As shown, in another preferred embodiment, a limiting unit 130 is further provided between two adjacent tubular filters 110 to prevent the bellows 120 from being damaged by excessive stretching and deformation. There are multiple limiting units 130, and the multiple limiting units 130 are evenly distributed circumferentially with the center of the bellows 120 as the center. Fig.11 The number of the limiting units 130 shown in the figure is six, and the number of the limiting units 130 can be set according to actual conditions.

[0091] Specifically, Figure 9-11 As shown, the limiting unit 130 includes fixed blocks 131 respectively arranged on the inner walls of the two tubular filters 110. The fixed blocks 131 and the tubular filters 110 are integrally formed or separately arranged and then fixedly connected as one. The fixed blocks 131 are provided with through holes 1311, which are bar-shaped holes. A connecting rod 132 is inserted into the through holes 1311 of the two fixing blocks 131 and the connecting rod 132 can move in the through holes 1311. For example, the connecting rod 132 can move axially and radially relative to the bellows 120 in the through holes 1311. The six connecting rods 132 of the six limiting units 130 are evenly distributed circumferentially with the center of the bellows 120 as the center. The two ends of the connecting rod 132 are respectively located outside the two fixed blocks 131. The end of the connecting rod 132 located outside the fixed block 131 is connected to a limit piece 133 to prevent the connecting rod 132 from separating from the fixed block 131. There is a certain distance between the limit piece 133 and the fixed block 131 to facilitate the axial movement of the connecting rod 132 in the through hole 1311.

[0092] In this embodiment, the connecting rod 132 is a screw rod, and the limiting member 133 is a nut threadedly connected to the screw rod; or the connecting rod 132 is a bare rod structure, an annular groove is provided on the outer wall of the connecting rod 132, and the limiting member 133 is an elastic retaining ring clamped in the annular groove; or the connecting rod 132 is a bare rod structure, a protrusion is provided on the outer wall of the connecting rod 132, and the limiting member 133 is an annular spacer, and a groove that is clamped with the protrusion is provided on the inner wall of the annular spacer. The annular spacer and the connecting rod 132 are clamped together by the protrusion and the groove to achieve fixed connection between the limiting member 133 and the connecting rod 132.

[0093] By adopting the above technical solution, the connecting rod 132 passes through the through hole 1311 on the fixing block 131 to connect the two tubular filters 110, and then the limiter 133 limits the stretching degree of the bellows 120, so that the bellows 120 will not be damaged by excessive stretching deformation. The through hole 1311 is a bar hole, so that the connecting rod 132 can move axially and radially in the through hole 1311 to adapt to the bending deformation of the bellows 120. Preferably, the outer wall of the connecting rod 132 and the inner wall of the through hole 1311 are transitionally or interference fit, so that the connecting rod 132 will not shake freely in the through hole 1311 without external force.

[0094] Embodiment 3

[0095] This embodiment provides a method for constructing the infiltration channel 100 in the second embodiment. Fig.12 and Fig.13As shown, in a preferred embodiment, it includes the following steps: a working well 170 is set along the river (including river, lake, reservoir), and this embodiment is described by setting a working well 170 as an example. The target path of the infiltration channel 100 is formed according to the characteristics of the aquifer a, and the path of the hole is the same as the target path of the infiltration channel 100, such as Fig.12 As shown, a pilot drill bit 150 is used to drill a hole from a working well 170 into an aquifer a of a riverbed; Fig.13 As shown, after the guide drill bit 150 completes the drilling work along the target path of the infiltration channel 100, the hole expansion device 160 expands and cleans the hole from the end of the hole (shore), that is, the travel path of the hole expansion device 160 is opposite to that of the guide drill bit 150; then the tubular filter 110 is laid, and in order to speed up the construction progress, the hole expansion device 160 expands and cleans the hole section by section, and the tubular filter 110 is also installed section by section, that is, the tubular filter 110 is installed immediately after the hole expansion and cleaning.

[0096] It should be noted that the pilot drill bit 150 can also drill a hole from the river bank into the river bed.

[0097] In this embodiment, the direction of the travel trajectory of the guide drill bit 150 and the reaming device 160 is controlled by a wireless control terminal. Specifically, the required path is obtained based on the surveyed stratum conditions combined with the water extraction demand, and the control unit controls the travel posture of the guide drill bit 150 to move along the designed path. In practice, a ground penetrating radar can also be installed on the guide drill bit 150 to check the stratum changes at any time and adjust the travel path appropriately.

[0098] The guide drill bit 150 is provided with forward power by the power device 140. For example, in the prior art, an air compressor is used to provide pressurized air, and a hose transmits the pressurized air to enable the guide drill bit 150 to drill a hole. Another example is that the guide drill bit 150 is connected to the drill rod of the drilling rig, and the drill rod drives the guide drill bit 150 to rotate and move forward to drill a hole. The hole expansion device 160 can also be driven by an air compressor or an electric device. It should be noted that the use of the guide drill bit 150 for drilling holes and the use of the hole expansion device 160 for hole expansion and hole cleaning are prior arts, and their structure and working principle are not described in detail here.

[0099] When the pilot drill 150 is powered by an air compressor, the pilot drill 150 can reserve a steel cable for traction in the hole while drilling, and the hole reaming device 160 moves along the path of the steel cable and cuts the steel cable when reaming and cleaning the hole. In practice, the steel cable can be integrated with a hose for conveying air, such as a stainless steel bellows 120 (similar to the structure of a shower hose).

[0100] It should be noted that when the number of the working wells 170 is two or more, the working wells 170 may be located at both ends of the infiltration channel 100, or on the path of the infiltration channel 100. Figure 5As shown, two working wells 170 are set up, and the two working wells 170 are connected to the two ends of the infiltration channel 100 respectively. The guide drill bit 150 drills a hole in the riverbed from any working well 170. For example, the guide drill bit 150 drills a hole in the riverbed from the left working well 170, and the hole expansion equipment 160 expands and cleans the hole from the right working well 170.

[0101] When the working well 170 is used as a water collection well, the working well 170 can also be constructed as a double-ring casing structure. After the infiltration channel 100 is constructed, a water collection well 210 is constructed in the working well 170, and the water collection well 210 serves as a water storage facility.

[0102] Embodiment 4

[0103] This embodiment provides a sinking artificial filter 300 that can be used in the first embodiment. Fig.14 As shown, in a preferred embodiment, the sunken artificial filter 300 is arranged in the riverbed, or below the drainage ditch 320 excavated from the floodplain 312 on the side of the river channel 310. When the sunken artificial filter 300 is arranged below the drainage ditch 320 excavated from the floodplain 312 on the side of the river channel 310, both sides of the river channel 310 have flood-control embankments 311, one side of which has a floodplain 312 between the embankment 311 and the river channel 310, and the drainage ditch 320 is excavated in the floodplain 312, and the drainage ditch inlet 321 and the drainage ditch outlet 322 are both connected to the river channel 310, and the water flow direction of the drainage ditch 320 is the same as the water flow direction of the river channel 310.

[0104] As required, a water collection well 336 can be set up on the shore near the sunken artificial filter 300, and the water after the percolation of the sunken artificial filter 300 is collected by the water collection well 336, and connected to the water collection shaft 500 through the water delivery channel 600. Of course, the sunken artificial filter 300 can also be directly connected to the water collection shaft 500 through the water delivery channel 600, and the water after the percolation of the sunken artificial filter 300 is directly collected in the water collection shaft 500.

[0105] In this embodiment, when the pressure fluid provided by the recoil system is pressurized water and the water realizes recoil by its own weight, as Fig.14 As shown, the backwash water source can also be the river water upstream of the river channel 310, such as the water in the dam 313 located upstream of the sunken artificial filter 300. The water level difference between the water in the dam 313 and the river water above the sunken artificial filter 300 is 2m-5m, and backwashing is achieved by using the height difference.

[0106] It should be noted that when the pressure fluid used for backwashing is provided by a water pump or an air compressor, the backwashing system can be arranged in the water collection well 336. Specifically, the water pump is arranged in the water at the bottom of the water collection well 336. The water pump is a submersible pump. The water pump pressurizes the water in the water collection well 336 and then delivers it to the backwash pipe 810; the air compressor can be arranged on the water surface of the water collection well 336 or placed in the water after a waterproof cover is set. The water pump and the air compressor are arranged in the water collection well 336, which can reduce the ground space occupied.

[0107] like Fig.15 As shown, in another preferred embodiment, the sunken artificial filter 300 includes at least two filter structures 330, and the two or more filter structures 330 can work simultaneously or in time-sharing. The filter structure 330 is filled with a percolation layer 332 composed of granular filter material, and the upper part of the percolation layer 332 is the river water led to the drainage ditch 320. The bottom of the percolation layer 332 in the filter structure 330 is provided with a plate filter 331, and the plate filter 331 is fixed in the filter structure 330. The upper part of the plate filter 331 is the percolation layer 332. The backwash pipe 810 is partially buried in the percolation layer 332, and the backwash pipe 810 is located in the filter structure 330. The pipe wall has a plurality of water outlet holes. There is a water collection tank 333 below the plate filter 331, and the water inlet of the water delivery channel 600 is connected to the water collection tank 333. The water filtered by the plate filter 331 enters the water collection tank 333 and is then transported by the water delivery channel 600. When the size of the filter tank structure 330 is large, a support can be set in the water collection tank 333 to support the plate filter 331.

[0108] In this embodiment, the filtration layer 332 includes a pebble layer 3321 , a coarse sand and gravel layer 3322 , and a pebble and gravel layer 3323 arranged in sequence from top to bottom, and the plate filter 331 is arranged in the pebble and gravel layer 3323 or at the bottom of the pebble and gravel layer 3323 .

[0109] In this embodiment, the effective porosity of the plate filter 331 is 30% to 40%, the plate filter 331 is a stainless steel filter plate, or the plate filter 331 is a gravel-attached filter plate, such as the filter formed by attaching gravel to the filter plate disclosed in CN201738372U.

[0110] like Fig.15As shown, this embodiment is explained by taking the setting of two sunken filter tank structures 330 as an example. The water delivery channel 600 for transporting the filtered water of the sunken artificial filter tank 300 includes a water delivery main pipe 3351, and two groups of water delivery branches 3352 connected to the water delivery main pipe 3351 and capable of working simultaneously or in time sharing. Each filter tank structure 330 is connected to a group of water delivery branches 3352, and the water outlet of the water delivery main pipe 3351 is connected to the water collection well 336. The backwash pipe 810 includes a backwash main pipe 3341 and two groups of backwash branch pipes 3342 connected to the backwash main pipe 3341 and capable of working simultaneously or in time-sharing. A group of backwash branch pipes 3342 is buried in each filter tank structure 330. A plurality of water outlet holes are arranged on the pipe wall of the backwash branch pipes 3342. The water inlet of the backwash main pipe 3341 is connected to the backwash system. Preferably, the backwash branch pipes 3342 are buried in the pebble and gravel layer 3323.

[0111] Furthermore, each group of water delivery branch pipes 3352 is connected to the water delivery main pipe 3351 through the water delivery main pipe 3353, and the water delivery main pipe 3353 is provided with a water intake valve 700 for controlling its on-off, and the water intake valves 700 on the water delivery main pipe 3353 connected to the left and right filter tank structures 330 are respectively the first water intake valve and the second water intake valve. Each group of backwash branch pipes 3342 is connected to the backwash main pipe 3341 through the backwash main pipe 3343, and the backwash main pipe 3343 is provided with a backwash valve 820 for controlling its on-off, and the backwash valves 820 on the backwash main pipe 3343 connected to the left and right filter tank structures 330 are respectively the first backwash valve and the second backwash valve.

[0112] This embodiment is explained by taking the flood period as the time when the filter tank structure 330 on the left is working and the filter tank structure 330 on the right is not working, then the first water intake valve is opened, and the second water intake valve, the first backwash valve and the second backwash valve are closed. After a period of time, when the filter tank structure 330 on the left is clogged and needs to be backwashed, the first water intake valve is closed, the filter tank structure 330 on the left stops producing water, the second water intake valve is opened, and water is produced by the filter tank structure 330 on the right. Then the first backwash valve is opened to backwash the filter tank structure 330 on the left, and after the backwashing is completed, the first backwash valve is closed. The two filter tank structures 330 are used as a backup to ensure the continuous water production of the sunken artificial filter tank 300.

[0113] It should be noted that during the dry season, the two filter tank structures 330 work simultaneously, the first water intake valve and the second water intake valve are opened, and the first backwash valve and the second backwash valve are closed. After a period of time, when the filter tank structure 330 is clogged and needs to be backwashed, the two filter tank structures 330 can be backwashed at intervals, or the two filter tank structures 330 can be backwashed at the same time.

[0114] In the description of this specification, the description with reference to the terms "preferred embodiment", "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means 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 representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0115] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. Natural riverbed infiltration water extraction integrated system, characterized in that: An integrated water intake system formed by any combination of at least two water intake methods including water intake from a tube well, water intake from a large well, water intake from a radial well, water intake from an infiltration channel, water intake from a submerged artificial filter, and water intake from a reverse infiltration channel; the integrated system includes a water collection shaft, a water intake borehole, a connecting borehole, a water delivery channel, a control system, and a backwash system; and includes at least two of the water intake chamber, the tube well, the large well, the radial well, the submerged artificial filter, and the infiltration channel; The water intake chamber, tube well, large well, radial well, sunken artificial filter, and infiltration channel are all water intake structures. The water intake structure is connected to the water collection shaft through a water transmission channel and / or a connecting borehole, and the water intake structures are also connected to each other through a water transmission channel and / or a connecting borehole; different types of water intake structures are connected in series and / or in parallel before being connected to the water collection shaft, and the same type of water intake structures are also connected in series and / or in parallel before being connected to the water collection shaft; and / or the water transmission channel includes a pipe without holes all around, a tubular filter, or an infiltration channel; The infiltration channel is formed by connecting a plurality of tubular filters, and the infiltration channel is distributed in a riverbed in a straight line or in a curved manner. When the infiltration channel is distributed in a curved manner in the riverbed, two adjacent tubular filters are flexibly connected by a bellows, and the two ends of the bellows are respectively fixedly connected to the two tubular filters. A limiting unit is also provided between the two adjacent tubular filters to prevent the bellows from excessive stretching and deformation. The limiting unit includes fixed blocks respectively provided on the inner walls of the two tubular filters, and the fixed blocks are provided with through holes provided therethrough. A connecting rod is inserted into the through holes of the two fixed blocks and the connecting rod can move in the through holes. The two ends of the connecting rod are respectively located outside the two fixed blocks, and the ends of the connecting rod located outside the fixed blocks are connected with limiting pieces to prevent the connecting rod from detaching from the fixed blocks, and there is a certain distance between the limiting piece and the fixed blocks.

2. The natural riverbed infiltration water extraction integrated system according to claim 1 is characterized in that: A control system and a recoil system are arranged in the radial well and / or the water collection shaft, and the recoil system provides pressurized water or compressed air, and the pressurized water is pressurized by a water pump or forms water pressure by its own weight; When a water intake chamber and / or a radiation well is provided, a water intake valve is provided on the percolation water intake pipes connected to the water intake chamber / radiation well and extending into the aquifer. The water intake valve is provided at the water outlet of the percolation water intake pipes. All or part of the percolation water intake pipes are connected to a backwash pipe connected to the backwash system. The percolation water intake pipes connected to the backwash pipes are provided with a water intake valve and a backwash valve at the same time. The backwash system provides pressurized water or compressed air to the backwash pipes. When a sinking artificial filter is provided, the backwash system is connected with a backwash pipe which extends into the sinking artificial filter to backwash the sinking artificial filter, a backwash valve is provided on the backwash pipe, and the backwash system provides pressurized water or compressed air to the backwash pipe; When an infiltration channel is provided, a water intake valve is provided on the infiltration channel, the recoil system is connected to a recoil pipe communicating with the infiltration channel, a recoil valve is provided on the recoil pipe, and the recoil system provides pressurized water or compressed air to the recoil pipe.

3. The natural riverbed infiltration water extraction integrated system according to claim 2 is characterized in that: The tube well, large well and radial well are all water intake wells. The water intake well and / or water collection shaft are provided with a first turbidity meter for detecting the turbidity of water in the well and a water level meter for detecting the water level in the well. The signal output ends of the first turbidity meter and the water level meter are both connected to the remote monitoring device.

4. The natural riverbed infiltration water extraction integrated system according to claim 3 is characterized in that: A second turbidity meter for detecting water turbidity is provided on the infiltration water intake pipe connected to the water intake chamber and / or the radiation well and / or the sunken artificial filter and / or the water collection shaft and extending into the aquifer. A second turbidity meter for detecting water turbidity is also provided on the infiltration channel. The signal output end of the second turbidity meter is connected to the remote monitoring device.

5. The natural riverbed infiltration water extraction integrated system according to claim 4, characterized in that: Also included is a controller connected to the remote monitoring device; The first group of input ends of the controller are electrically connected to the signal output ends of the first turbidity meter, the second group of input ends of the controller are electrically connected to the signal output ends of the water level meter, and the third group of input ends of the controller are electrically connected to the signal output ends of the second turbidity meter; The first control end group of the controller is electrically connected to the water intake valves in sequence, and controls the water intake valves independently or in groups. The second control end group of the controller is electrically connected to the recoil valves in sequence, and controls the recoil valves independently or in groups.

6. The natural riverbed infiltration water extraction integrated system according to any one of claims 2 to 5, characterized in that: The water intake valve is provided at the end of the water delivery channel connected to the water intake structure; And / or the sunken artificial filter is arranged in the riverbed, or below the drainage ditch excavated from the floodplain at the side of the river channel.

7. The design method of the natural riverbed infiltration water extraction integrated system according to claim 1 is characterized in that: According to the topography, hydrology, geological conditions and actual construction conditions on site, water is taken from tube wells, large wells, radial wells, infiltration channels, sunken artificial filters and reverse infiltration: In river sections where the natural riverbed has a thick layer of sand and gravel, the bedrock is stable and cracks are not developed, or when the river is not convenient for surface construction due to factors such as navigation and water depth, water can be extracted by tube wells, large wells, radial wells or reverse infiltration water extraction technology; In river sections where the thickness of the natural riverbed sand and gravel layer is relatively thin, the surface water quality of the river is good, the river depth is relatively small, and the river channel or bank is convenient for surface construction, water can be taken through infiltration channels; In areas where the sand and gravel layer is very thin or there is no sand and gravel layer on the bank, a sunken artificial filter can be used to draw water.

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