Repairable piezometric tube

Abstract

The utility model discloses a repairable piezometric tube in the technical field of hydraulic engineering monitoring, which comprises a tube body, a tube body section and a permeable section, and a plurality of water seepage holes are formed in the periphery of the permeable section; the sealing plate is arranged at the bottom end of the permeable section; the repairing layer wraps the periphery of the permeable section and comprises an exhaust belt and sealing strips arranged at the upper end and the lower end of the exhaust belt; the outer filtering layer wraps the periphery of the repairing layer; one end of the air guide pipe is communicated with the exhaust belt. Air is pumped into the repairing layer through the air guide pipe, silted silt on the outer side of the exhaust belt can be blown away, so that the pressure measuring pipe is simply and efficiently repaired, the operation is convenient, the repairing effect is good, the service life is greatly prolonged, and the problem that the labor cost, the time cost and the material cost are increased due to pore-forming reworking is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy project monitoring, in particular to a repairable pressure measuring tube. Background Art

[0002] Piezometers are commonly used in seepage monitoring. Placed in a pressure well, they measure the seepage pressure in the area using the height of the water column in the tube. They are often used to monitor groundwater levels, dam infiltration lines, dam foundation uplift pressure, and seepage around dams. Existing piezometers consist of a conduit section and a permeable section, with a geotextile wrapped around the permeable section to filter soil and drain water.

[0003] Over time, the geotextile fabric outside the permeable section will inevitably become damaged and aged, reducing the piezometric tube's ability to filter silt and impurities, further affecting the accuracy of the monitoring data. To restore the permeable section's filtration capacity, the traditional method is to hydraulically flush the permeable section, thereby unclogging the seepage holes outside the permeable section through water pressure.

[0004] However, since the outer geotextile has been damaged and buried in the soil layer and is difficult to repair, soil particles will re-enter from the seepage holes in a short period of time after hydraulic flushing, thereby blocking the pressure measuring tube again, making it impossible to fundamentally restore its function. Utility Model Content

[0005] The purpose of the utility model is to provide a repairable pressure measuring tube, which solves the technical problem that the pressure measuring tube in the prior art cannot be repaired.

[0006] The utility model discloses a repairable pressure measuring tube, comprising:

[0007] The pipe body is vertically arranged and comprises a pipe body section and a water permeable section, and a plurality of water seepage holes are opened on the outer circumference of the water permeable section;

[0008] A sealing plate is provided at the bottom end of the permeable section;

[0009] A repair layer wrapped around the outer periphery of the water-permeable section, comprising an exhaust belt and sealing strips provided at the upper and lower ends of the exhaust belt;

[0010] An outer filter layer, wrapped around the outer periphery of the repair layer;

[0011] An air guide pipe has one end connected to the exhaust belt.

[0012] This application pumps air into the repair layer through an air duct, which can blow away the mud and sand blocking the outside of the exhaust belt, allowing the pressure measuring tube to quickly restore its monitoring function. It completes the repair simply and efficiently, and is easy to operate and has a good repair effect, thereby greatly extending the service life and overcoming the problem of increased labor, time and material costs caused by redoing the hole.

[0013] On the basis of the above technical solution, the solution of this application can also be improved as follows:

[0014] Preferably, it also includes:

[0015] The inner filter layer is arranged between the repair layer and the permeable section; by adopting this solution, filtration is performed again, thereby improving the filtration effect.

[0016] Preferably, the outer filter layer and the inner filter layer are geotextiles or wire mesh; adopting this solution, the filtering effect is good, the material cost is low, and it is not easy to be damaged.

[0017] Preferably, the permeable section includes an opening area and a sedimentation area from top to bottom; the seepage holes are opened at the periphery of the opening area, and the repair layer is wrapped around the periphery of the opening area; adopting this solution improves the stability of the overall structure.

[0018] Preferably, the bottom end of the pipe body section and the top end of the water-permeable section are threadedly connected; by adopting this solution, the docking can be completed conveniently and stably, the connection is stable, the assembly is convenient and the structure is regular, thus ensuring the use effect.

[0019] Preferably, a through hole is opened on the outer periphery of the bottom end of the tube section, and the other end of the air guide tube penetrates into the interior of the tube section through the through hole and extends upward from the top opening of the tube section; adopting this solution reduces the probability of accidental damage and improves durability and service life.

[0020] Preferably, the sealing strip is a geomembrane; this solution has the advantages of low specific gravity, strong extensibility, high adaptability to deformation, and good corrosion resistance, low temperature resistance and frost resistance.

[0021] Preferably, the exhaust belt comprises a core belt and filter membranes covering both sides of the core belt in the thickness direction; adopting this solution improves the structural stability.

[0022] Preferably, the cross-section of the core belt is a harmonica-shaped structure, which is used to form longitudinal grooves for gas circulation; adopting this solution significantly improves the gas transmission efficiency and can achieve the best effect under various complex geological conditions.

[0023] Through the above technical solution, the utility model achieves the following beneficial effects:

[0024] This application pumps air into the repair layer through an air guide pipe, which can blow away the mud and sand blocking the outside of the exhaust belt, thereby completing the repair of the pressure measuring tube simply and efficiently. It is easy to operate and has a good repair effect, thereby greatly extending the service life and overcoming the problem of increased labor, time and material costs caused by redoing the hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a front cross-sectional view of a repairable pressure measuring tube according to a specific embodiment of the present utility model;

[0027] Figure 2 for Figure 1 A magnified schematic diagram of point A in the middle;

[0028] Figure 3 for Figure 1 The schematic diagram of the structure of the pipe body in the repairable pressure measuring tube is shown;

[0029] Figure 4 for Figure 3 A magnified schematic diagram of point B in the middle;

[0030] Figure 5 for Figure 1 Schematic diagram of the expansion of the repair layer in the repairable pressure measuring tube shown;

[0031] Figure 6 for Figure 1 Schematic diagram of the use of the repairable pressure measuring tube shown;

[0032] Description of reference numerals:

[0033] 1. Tube body; 2. Sealing plate; 3. Repair layer; 4. Outer filter layer; 5. Air guide tube; 6. Inner filter layer;

[0034] 11. Pipe body section; 12. Permeable section; 31. Exhaust strip; 32. Closure strip;

[0035] 111, through hole; 12a, seepage hole; 121, opening area; 122, sedimentation area. DETAILED DESCRIPTION

[0036] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0037] First of all, it should be noted that in the following description, some directional words involved in order to clearly illustrate the technical solution of the present invention, such as the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., are all based on the meanings of the normal directions of the components in the repairable pressure measuring tube by analogy. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0038] In this application, unless otherwise specified or limited, the terms "mounted" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0039] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0040] Example:

[0041] like Figure 1 As shown, an embodiment of the present application discloses a repairable pressure measuring tube for monitoring seepage pressure, and its specific structure includes: a tube body 1, a sealing plate 2, a repair layer 3, an outer filter layer 4 and an air guide tube 5.

[0042] The pipe body 1 is vertically arranged and includes a pipe section 11 and a permeable section 12. The permeable section 12 is provided with a plurality of seepage holes 12a on its periphery. The pipe body 1 is preferably cylindrical for ease of installation, but is not limited thereto. It can also be a regular quadrangular prism, a regular triangular prism, or a regular hexagonal prism, etc., without specific limitation. During installation, the top of the pipe body 1 should be above the ground and equipped with a pipe mouth protection device to prevent rainwater ingress and vandalism. The seepage holes 12a are evenly distributed in a matrix to improve detection accuracy and ensure structural strength. They are preferably circular, but can also be triangular, square, or other shapes, without limitation.

[0043] Specifically, the pipe body section 11 is a plastic pipe, and the water-permeable section 12 is a stainless steel pipe, thereby ensuring the structural strength of the water-permeable section 12 and reducing the overall weight, thereby improving the use effect.

[0044] The sealing plate 2 is provided at the bottom end of the permeable section 12 and is used to seal the bottom opening of the pipe body 1. Its shape and size are preferably adapted to the bottom end of the pipe body 1 to improve the structural regularity, and is preferably connected by welding for a firm connection.

[0045] The repair layer 3 is wrapped around the outer periphery of the water-permeable section 12 and includes an exhaust belt 31 and sealing strips 32 provided at the upper and lower ends of the exhaust belt 31 .

[0046] The outer filter layer 4 is wrapped around the outer periphery of the repair layer 3 and is used to filter the water body to prevent soil particles around the pipe body 1 from entering the interior of the pipe body 1.

[0047] One end of the air guide pipe 5 is in communication with the exhaust belt 31 for pumping air into the exhaust belt 31 .

[0048] The above technical solution is used as follows:

[0049] When the pressure measuring tube is in use, the water in the soil penetrates into the pressure measuring well, and then undergoes preliminary filtration through the filter material, and then undergoes secondary filtration through the outer filter layer 4 and the repair layer 3, and then enters the pipe body 1 through the multiple seepage holes 12a on the permeable section 12 until it reaches the same level as the water level in the soil.

[0050] When the surface of the outer filter layer 4 is clogged, the other end of the air guide tube 5 is connected to the pressure pump arranged outside the pressure measuring well, so that air can be pumped into the exhaust belt 31. Since the upper and lower ends of the exhaust belt 31 are closed by the sealing strips 32, the mud and sand clogged on the surface of the exhaust belt 31 will be blown away, so that the pressure measuring tube can quickly resume its monitoring function.

[0051] The present application pumps air into the repair layer 3 through the air guide pipe 5, which can blow away the mud and sand blocking the outside of the exhaust belt 31, thereby completing the repair of the pressure measuring tube simply and efficiently. It is easy to operate and has a good repair effect, thereby greatly extending the service life and overcoming the problem of increased labor, time and material costs caused by redoing the hole.

[0052] In some embodiments, as Figure 1 and Figure 2 As shown, it also includes: an inner filter layer 6, which is arranged between the repair layer 3 and the permeable section 12 and is used for filtering again, thereby improving the filtering effect.

[0053] In some embodiments, as Figure 2 As shown, the outer filter layer 4 and the inner filter layer 6 are geotextiles or wire mesh; the wire mesh is 180 mesh, has good filtering effect, low material cost, and is not easy to damage.

[0054] In some embodiments, as Figure 3 and Figure 4 As shown, the permeable section 12 includes an open area 121 and a sedimentation area 122 from top to bottom; the seepage holes 12a are opened on the periphery of the open area 121, and its area opening rate is about 10% to 20%, and the repair layer 3 is wrapped around the periphery of the open area 121, thereby improving the stability of the overall structure.

[0055] For example, the length of the opening area 121 is 1.5 m, and the length of the precipitation area 122 is 0.5 m, which are of moderate length and convenient for practical application.

[0056] In some embodiments, as Figure 4 As shown, the bottom end of the pipe body section 11 and the top end of the water permeable section 12 are threadedly connected. Specifically, the outer periphery of the bottom end of the pipe body section 11 is provided with an external thread, and the inner periphery of the top end of the water permeable section 12 is provided with an internal thread, and the internal and external threads are engaged with each other.

[0057] Through the above arrangement, the pipe body section 11 and the water-permeable section 12 can be conveniently and stably connected, the connection is stable, the assembly is convenient and the structure is regular, thus ensuring the use effect.

[0058] In some embodiments, as Figure 2 and Figure 4 As shown, a through hole 111 is opened on the outer periphery of the bottom end of the tube section 11 , and the other end of the air guide tube 5 passes through the through hole 111 into the interior of the tube section 11 and extends upward from the top opening of the tube section 11 .

[0059] By providing the through hole 111 , the air guide pipe 5 is delivered to the ground from the inside of the pipe body 1 , thereby reducing the probability of accidental damage and improving durability and service life.

[0060] In some embodiments, the sealing strip 32 is a geomembrane, which is a geotechnical anti-seepage material made of a plastic film as an anti-seepage base material and a composite of a non-woven fabric; it has the advantages of low specific gravity, strong extensibility, high adaptability to deformation, and good corrosion resistance, low temperature resistance and anti-freeze performance.

[0061] For example, plastic films mainly include polymer chemical flexible materials such as polyvinyl chloride (PVC), polyethylene (PE) and ethylene / vinyl acetate copolymer (EVA).

[0062] In some embodiments, the exhaust belt 31 includes a core belt and filter membranes covering both sides of the core belt in the thickness direction; the core belt is extruded from polyethylene or polypropylene, plays a supporting role, and is used to transport gas, thereby blowing away the mud and sand blocking the surface of the filter membrane in reverse.

[0063] Based on the above embodiment, the cross-section of the core belt is a harmonica-shaped structure, which is used to form longitudinal grooves for gas circulation, significantly improving the gas transmission efficiency and can achieve the best effect under various complex geological conditions. However, it is not limited to this and can also be battlement-shaped, wavy or other shapes without specific limitation.

[0064] In the specification of the present invention, a large number of specific details are described. However, it is understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" 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 expressions 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 the features of different embodiments or examples without contradiction.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A repairable pressure measuring tube, characterized in that: include: The pipe body (1) is vertically arranged and comprises a pipe body section (11) and a water-permeable section (12), wherein the outer periphery of the water-permeable section (12) is provided with a plurality of water seepage holes (12a); A sealing plate (2) is provided at the bottom end of the water permeable section (12); A repair layer (3) wrapped around the outer periphery of the water-permeable section (12), comprising an exhaust belt (31) and sealing strips (32) provided at the upper and lower ends of the exhaust belt (31); An outer filter layer (4) wrapped around the outer periphery of the repair layer (3); An air guide pipe (5) has one end in communication with the exhaust belt (31).

2. The repairable pressure measuring tube according to claim 1, characterized in that: Also includes: The inner filter layer (6) is provided between the repair layer (3) and the water permeable section (12).

3. The repairable pressure measuring tube according to claim 2, characterized in that: The outer filter layer (4) and the inner filter layer (6) are geotextiles or wire mesh.

4. The repairable pressure measuring tube according to claim 1, characterized in that: The permeable section (12) comprises an opening area (121) and a sedimentation area (122) from top to bottom; the seepage holes (12a) are opened on the periphery of the opening area (121), and the repair layer (3) is wrapped around the periphery of the opening area (121).

5. The repairable pressure measuring tube according to claim 1, characterized in that: The bottom end of the pipe body section (11) and the top end of the water-permeable section (12) are threadedly connected.

6. The repairable pressure measuring tube according to claim 1, characterized in that: A through hole (111) is provided on the outer periphery of the bottom end of the tube section (11), and the other end of the air guide tube (5) penetrates into the interior of the tube section (11) through the through hole (111) and extends upward from the top opening of the tube section (11).

7. The repairable pressure measuring tube according to claim 1, characterized in that: The closing strip (32) is a geomembrane.

8. The repairable pressure measuring tube according to claim 1, characterized in that: The exhaust belt (31) comprises a core belt and filter membranes provided on both sides of the core belt in a thickness direction.

9. The repairable pressure measuring tube according to claim 8, characterized in that: The cross section of the core strip is a harmonica-shaped structure, which is used to form longitudinal grooves for gas circulation.

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