A stamping mesh electroosmotic solidification device for water-pollution sites and a construction method thereof

Abstract

The present invention discloses a stamping mesh electroosmosis solidification device and construction method for a water-bearing contaminated site, including a grouting assembly, including a slurry box, an air compressor, a connecting pipe and a grouting piece, wherein the air compressor is fixed on the slurry box, the connecting pipe is connected to one side of the slurry box, the grouting piece is arranged at the end of the connecting pipe, and evenly distributed grouting holes are opened on the contaminated site, and the grouting piece is located in the grouting holes; and a control valve assembly is arranged on the connecting pipe, including a valve body, a valve seat, a valve stem, an installation box, an adjusting piece, a trigger piece and a limit piece, and the valve seat is fixed in the valve body. The present invention makes the solidification path of the contaminated land more abundant and more suitable for water-bearing strata through the grouting assembly and the control valve assembly, and can reduce the solidification time through the construction method, and the solidification range of the contaminated land is wider.

Description

Technical Field

[0001] The invention relates to the technical field of contaminated site solidification treatment, in particular to a stamping type mesh electroosmosis solidification device for water-contaminated sites and a construction method. Background Art

[0002] In recent years, with the people's increasing attention to heavy metal pollutants and the improvement of environmental awareness, the research on pollutant treatment methods has become more in-depth. At present, the methods of pollutant treatment mainly include extraction and solidification. The former extracts pollutants from the soil through physical and chemical methods to restore the original value of the soil; the latter adds cement and other solidifying materials to form a whole with the soil and pollutants to reduce the spread of pollutants. The extraction treatment method has less impact on the ecological environment, but its implementation cost is relatively high. Therefore, solidification treatment is a common means of contaminated soil treatment.

[0003] Common implementation methods for contaminated site solidification treatment mainly include cement soil mixing piles, high-pressure rotary jet piles and electro-osmosis treatment. Among them, cement soil mixing piles have a better implementation effect because the entire contaminated site is solidified with cement soil, but its construction cost is the highest and its impact on the ecological environment is also the greatest; the solidification effect of high-pressure rotary jet piles is second only to cement soil mixing piles. Electro-osmosis treatment is a chemical solidification method with a relatively low implementation cost. Cement and other solidification slurries are infiltrated into the entire construction site through electrodes. During the electro-osmosis implementation process, engineers only need to add current to the electrodes and continuously inject slurry to complete the grouting operation of the entire site. However, the electro-osmosis grouting process has the following problems: 1) The solidification path is single, and the passage between adjacent electrodes is single, especially in water-bearing strata, which makes it impossible for the solidification slurry to spread evenly throughout the contaminated site; 2) The electrode rods are easily passivated, which reduces the electro-osmosis solidification efficiency; 3) The strength formation time is long, and electro-osmosis is a slow process. Before the soil solidifies, the pollutants may have spread along the groundwater.

[0004] Therefore, it is necessary to propose an electroosmosis construction device and method that is suitable for water-bearing strata, has rich solidification paths, long electrode duration, and short solidification time, so as to ensure the solidification effect of the contaminated site. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In view of the above and / or existing problems in the existing stamping type mesh electroosmosis solidification device and construction method for water contaminated sites, the present invention is proposed.

[0007] Therefore, the problem to be solved by the present invention is how to solve the problems existing in the prior art.

[0008] To solve the above technical problems, the present invention provides the following technical solutions: a stamping mesh electroosmosis solidification device for a water-contaminated site, comprising: a grouting assembly, including a slurry box, an air compressor, a connecting pipe and a grouting part, the air compressor is fixed on the slurry box, the connecting pipe is connected to one side of the slurry box, the grouting part is arranged at the end of the connecting pipe, and evenly distributed grouting holes are opened on the contaminated site, and the grouting part is located in the grouting holes; and a control valve assembly, which is arranged on the connecting pipe, including a valve body, a valve seat, a valve stem, an installation box, an adjusting part, a triggering part and a limiting part, the valve seat is fixed in the valve body, the valve stem is arranged above the valve seat, the installation box is fixed to the top of the valve body, the adjusting part is arranged at the top of the valve stem and is located in the installation box, the triggering part is arranged on the adjusting part, and the limiting part is arranged on both sides of the inner wall of the installation box and cooperates with the triggering part.

[0009] As a preferred solution of the stamping mesh electroosmosis solidification device for water-contaminated sites described in the present invention, the grouting part includes a grouting pipe and an air bag, the grouting pipe is connected to the end of the connecting pipe and is located in the grouting hole, the air bag is fixed on the grouting pipe, a through hole is opened on the grouting pipe, and the through hole is located between the two air bags.

[0010] As a preferred solution of the stamping mesh electroosmosis solidification device for water contaminated sites described in the present invention, the adjusting member includes a threaded rod, a sleeve, a movable disk, a guide rod and a first spring, the threaded rod is rotatably connected to the top of the valve stem, the sleeve is arranged on the outside of the threaded rod, and the top extends to the top of the installation box, the movable disk is threadedly connected to the threaded rod, and is located between the sleeve and the valve stem, the guide rod is fixed to the bottom end of the sleeve, a guide groove is opened at the top of the valve stem, the bottom end of the guide rod passes through the movable disk and extends into the guide groove, and the two ends of the first spring are respectively fixed to the movable disk and the valve body.

[0011] As a preferred solution of the stamping mesh electroosmosis solidification device for water contaminated sites described in the present invention, the adjusting member also includes a limit block and a handle, the limit block is fixed to the inner wall of the sleeve, an annular groove is provided on the threaded rod, the limit block slides in the annular groove, and the handle is fixed to the top of the threaded rod.

[0012] As a preferred solution of the stamping mesh electroosmosis solidification device for water-contaminated sites described in the present invention, the trigger member includes a fixed tube, a movable ring, a second spring, a baffle and a top plate, the fixed tube is fixed on the sleeve, the movable ring slides on the sleeve and is located above the fixed tube, the two ends of the second spring are respectively fixed to the fixed tube and the movable ring, the baffle is fixed to both sides of the bottom of the movable ring, and the top plate is fixed to both sides of the top of the fixed tube.

[0013] As a preferred solution of the stamping mesh electroosmosis solidification device for water-contaminated sites described in the present invention, the trigger member also includes a fixing bar and a retaining ring, the fixing bar is fixed on both sides of the inner wall of the baffle, a limiting groove is provided on the fixing tube, the fixing bar slides in the limiting groove, and the retaining ring is fixed on the sleeve and is located at the top of the movable ring.

[0014] As a preferred solution of the stamping mesh electroosmosis solidification device for water contaminated sites described in the present invention, the limiting member includes a receiving plate, a hinge seat, a limiting plate and a third spring, the receiving plate is fixed on both sides of the inner wall of the installation box, the hinge seat is fixed on the top of the receiving plate, the limiting plate is hinged to the receiving plate through the hinge seat, and it cooperates with the movable ring, and the two ends of the third spring are respectively fixed to the limiting plate and the installation box.

[0015] As a preferred solution of the stamping mesh electroosmosis solidification device for water contaminated sites described in the present invention, the limiting member also includes a barb fixed to the inner side of the limiting plate, and an inclined groove is opened on the movable ring, and the barb is located in the inclined groove.

[0016] As a preferred solution of the stamping mesh electroosmosis solidification device for water contaminated sites described in the present invention, a first inclined surface is provided on the top plate, a second inclined surface is provided on the barb, the second inclined surface contacts the inner wall of the inclined groove, and the first inclined surface contacts the second inclined surface.

[0017] As a preferred solution of the construction method of the water contaminated site stamping mesh electroosmosis solidification device of the present invention, it comprises the following steps:

[0018] Before construction, conduct site pollutant assessment and design;

[0019] Use cement-soil mixing piles to construct the outer layer of the contaminated land;

[0020] Drill evenly distributed grouting holes on the contaminated ground;

[0021] Using grouting parts to inject grout into the grouting holes under pressure;

[0022] After the slurry solidifies, insert the graphite electrode rods into the grouting holes one by one;

[0023] Power is applied and electroosmotic fluid is injected for solidification.

[0024] The beneficial effects of the present invention are as follows: the present invention makes the solidification path of the contaminated land more abundant through the grouting assembly and the control valve assembly, and is more suitable for water-bearing strata, and the construction method can reduce the solidification time, and the solidification range of the contaminated land is wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0026] Figure 1 A scene diagram of the grouting components of a stamped mesh electroosmotic solidification device and construction method for a water-contaminated site.

[0027] Figure 2 This is a structural diagram of the control valve assembly for a stamped mesh electroosmotic solidification device and construction method for a water contaminated site.

[0028] Figure 3 A cross-sectional view of a control valve assembly for a stamped mesh electroosmotic solidification device and construction method for a water contaminated site.

[0029] Figure 4 A punching type mesh electroosmotic solidification device and construction method for water contaminated sites Figure 3 Enlarged view of inner part A.

[0030] Figure 5 A punching type mesh electroosmotic solidification device and construction method for water contaminated sites Figure 3 Enlarged view of inner part B.

[0031] Figure 6 Another perspective view of the triggering member of the stamped mesh electroosmotic solidification device and construction method for water contaminated sites.

[0032] Figure 7 Another perspective view of the adjustment parts of the stamped mesh electroosmotic solidification device and construction method for water contaminated sites.

[0033] Figure 8 Distribution diagram of graphite electrode rods for the stamped mesh electroosmotic solidification device and construction method for water contaminated sites. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0037] Example 1

[0038] Reference Figures 1 to 3 , which is the first embodiment of the present invention, and this embodiment provides a stamping-type mesh electroosmosis solidification device for a water-contaminated site. The stamping-type mesh electroosmosis solidification device for a water-contaminated site includes a grouting assembly 100 and a control valve assembly 200. The grouting assembly 100 is used to perform grouting operation on the contaminated land to increase the relative radius of contact between the motor and the soil. During this process, grouting can be automatically applied through the control valve assembly 200 without any electronic control equipment, thereby ensuring the solidification effect and safety.

[0039] Specifically, the grouting assembly 100 includes a slurry box 101, an air compressor 102, a connecting pipe 103 and a grouting piece 104. The air compressor 102 is fixed on the slurry box 101. The connecting pipe 103 is connected to one side of the slurry box 101. The grouting piece 104 is arranged at the end of the connecting pipe 103. Evenly distributed grouting holes S are opened on the contaminated site, and the grouting piece 104 is located in the grouting hole S.

[0040] Slurry is placed inside the slurry box 101, part of which is slurry and part of which is air. The slurry is a foaming agent, copper powder, graphite and other conductive materials. While ensuring the tree root shape, it does not affect the seepage of the slurry. The strength formation time is generally 3 to 7 days, and the slurry becomes a porous medium after hardening. The inside is water-permeable and the porous bubbles have high strength. This is to diffuse in multiple directions during electroosmosis to improve the electroosmosis efficiency and range. The air compressor 102 continuously fills air into the slurry box 101 to increase the pressure inside the slurry box 101. The high-pressure slurry is injected into the grouting part 104 through the connecting pipe 103, and then injected into the grouting hole S by the grouting part 104. Each grouting hole S is constructed in sections when injecting the slurry, and the high-pressure slurry is continuously injected, so that the slurry is distributed in the polluted land in the shape of tree roots under the action of high pressure, thereby increasing the relative radius of contact between the subsequent electrode and the soil to improve the electroosmosis effect.

[0041] The control valve assembly 200 is arranged on the connecting pipe 103, and includes a valve body 201, a valve seat 202, a valve stem 203, an installation box 204, an adjusting member 205, a trigger member 206 and a limit member 207. The valve seat 202 is fixed in the valve body 201, the valve stem 203 is arranged above the valve seat 202, the installation box 204 is fixed to the top of the valve body 201, the adjusting member 205 is arranged at the top of the valve stem 203 and is located in the installation box 204, the trigger member 206 is arranged on the adjusting member 205, and the limit member 207 is arranged on both sides of the inner wall of the installation box 204 and cooperates with the trigger member 206.

[0042] Flanges are provided at both ends of the valve body 201 for fixing to the connecting pipe 103. The valve seat 202 is Z-shaped with a hole in the middle for circulating slurry. A rubber pad is fixed to the bottom of the valve stem 203 for blocking the hole. The mounting box 204 is trapezoidal. The adjusting member 205 is used to adjust the force range of the control valve switch, and then the valve stem 203 is limited by the trigger member 206 and the limit member 207 so that it automatically opens after being subjected to a certain pressure. Guide plates are provided on both sides of the valve seat 202 to guide the flow of the slurry and minimize the loss of kinetic energy during the flow.

[0043] Example 2

[0044] Reference Figures 1 to 7 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0045] Specifically, the grouting part 104 includes a grouting pipe 104a and an air bag 104b. The grouting pipe 104a is connected to the end of the connecting pipe 103 and is located in the grouting hole S. The air bag 104b is fixed on the grouting pipe 104a. A through hole M is opened on the grouting pipe 104a, and the through hole M is located between the two air bags 104b.

[0046] There are two air bags 104b, one is located at the bottom end of the grouting pipe 104a, and the other is fixed on the grouting pipe 104a. When the two air bags 104b are filled with air, they can separate the space in the grouting hole S, so that the slurry sprayed out of the through hole M will not spray upward, but will diffuse from the middle of the two air bags 104b to the surroundings, so that it can be evenly distributed in the contaminated land in the shape of tree roots. After solidification, it becomes a porous medium with water permeable inside. The porous and flowing bubbles have high strength. It is for diffusing in multiple directions during electroosmosis to improve the efficiency and range of electroosmosis. When the pressure in a part of the grouting hole S is too high to inject slurry, first deflate the air bag 104b, then manually pull the grouting pipe 104a upward for a certain distance, fill the air bag 104b with air again, and then repeat the above operation until the entire contaminated land is filled with slurry.

[0047] The adjusting member 205 includes a threaded rod 205a, a sleeve 205b, a movable disk 205c, a guide rod 205d and a first spring 205e. The threaded rod 205a is rotatably connected to the top of the valve stem 203. The sleeve 205b is arranged on the outside of the threaded rod 205a, and the top extends to the top of the installation box 204. The movable disk 205c is threadedly connected to the threaded rod 205a and is located between the sleeve 205b and the valve stem 203. The guide rod 205d is fixed to the bottom end of the sleeve 205b. A guide groove K is opened at the top of the valve stem 203. The bottom end of the guide rod 205d passes through the movable disk 205c and extends into the guide groove K. The two ends of the first spring 205e are respectively fixed to the movable disk 205c and the valve body 201.

[0048] The threaded rod 205a is connected to the valve stem 203 via a bearing, the diameter of the sleeve 205b is the same as the diameter of the valve stem 203, and the threaded rod 205a is only provided with a thread at a position between the sleeve 205b and the valve stem 203, so that the height of the movable disk 205c can be adjusted by rotating the threaded rod 205a. The difference in the height of the movable disk 205c will change the pressure on the valve stem 203 in the initial state, thereby changing the minimum pressure required for resetting. In this process, the movable disk 205c is guided by the guide rod 205d to prevent it from deviating during the upward and downward movement. 205d and the guide groove K can limit the valve stem 203 to prevent it from rotating during use. Limiting strips are fixed on both sides of the sleeve 205b, which slide in the grooves opened on the installation box 204 to limit the sleeve 205b to prevent it from rotating during the up and down movement. The first spring 205e applies a downward pulling force to the movable disk 205c, and the pulling force cooperates with the pressure on the bottom of the valve stem 203. When the pressure becomes smaller and is less than five MPa, the valve stem 203 is pulled downward by the first spring 205e until the hole on the valve seat 202 is closed. At this time, the slurry cannot flow through the valve.

[0049] The adjusting member 205 further includes a limit block 205f and a handle 205g. The limit block 205f is fixed to the inner wall of the sleeve 205b. An annular groove J is provided on the threaded rod 205a. The limit block 205f slides in the annular groove J. The handle 205g is fixed to the top of the threaded rod 205a.

[0050] The limit block 205f is rectangular, and is provided with at least two groups, each group with at least four, and is evenly distributed in a ring shape on the inner wall of the sleeve 205b. Through the setting of the limit block 205f and the annular groove J, when the valve stem 203 moves up and down, the entire component will move up and down with it, and avoid the threaded rod 205a from driving the sleeve 205b to rotate when it rotates. The setting of the handle 205g makes it convenient for the staff to rotate the threaded rod 205a.

[0051] The trigger member 206 includes a fixed tube 206a, a movable ring 206b, a second spring 206c, a baffle 206d and a top plate 206e. The fixed tube 206a is fixed on the sleeve 205b, the movable ring 206b slides on the sleeve 205b and is located above the fixed tube 206a, the two ends of the second spring 206c are respectively fixed to the fixed tube 206a and the movable ring 206b, the baffle 206d is fixed to the two sides of the bottom of the movable ring 206b, and the top plate 206e is fixed to the two sides of the top of the fixed tube 206a.

[0052] The movable ring 206b can move up and down, and is pushed by the second spring 206c so that the distance between the movable ring 206b and the fixed tube 206a can withstand a pressure of at least ten MPa in the initial state, so that the valve stem 203 will not move upward when subjected to a pressure below ten MPa. The top plate 206e and the baffle plate 206d are both used to cooperate with the trigger member 206 to facilitate its resetting.

[0053] The trigger member 206 also includes a fixing strip 206f and a retaining ring 206g. The fixing strip 206f is fixed to both sides of the inner wall of the baffle 206d. A limiting groove N is provided on the fixing tube 206a. The fixing strip 206f slides in the limiting groove N. The retaining ring 206g is fixed on the sleeve 205b and is located at the top of the movable ring 206b.

[0054] The fixed strip 206f and the limiting groove N are used to limit the baffle 206d and the movable ring 206b to prevent them from rotating during the up and down movement, which would affect their use. The limiting ring 206g is used to limit the movable ring 206b, specify its initial position, and prevent it from being pushed too much upward by the second spring 206c, which would affect the use of the valve.

[0055] The limiting member 207 includes a receiving plate 207a, a hinge seat 207b, a limiting plate 207c and a third spring 207d. The receiving plate 207a is fixed on both sides of the inner wall of the installation box 204, the hinge seat 207b is fixed on the top of the receiving plate 207a, the limiting plate 207c is hinged to the receiving plate 207a through the hinge seat 207b, and it cooperates with the movable ring 206b, and the two ends of the third spring 207d are respectively fixed to the limiting plate 207c and the installation box 204.

[0056] The receiving plate 207a is rectangular and is located on both sides of the fixed tube 206a. The end of the limiting plate 207c is curved. When it is buckled on the top of the movable ring 206b, the inner side of the limiting plate 207c is parallel to the top of the movable ring 206b, thereby being able to limit the movable ring 206b. At the same time, the third spring 207d applies a force to the limiting plate 207c to rotate inward, so that it can be more firmly hooked on the movable ring 206b, thereby improving the stability of the movable ring 206b.

[0057] The limiting member 207 further includes a barb 207e which is fixed to the inner side of the limiting plate 207c. An inclined groove U is formed on the movable ring 206b, and the barb 207e is located in the inclined groove U.

[0058] The stability of the movable ring 206b in the initial state is further improved by the barb 207e and the inclined groove U, to prevent it from moving upward when the pressure is not up to standard and affecting the impact force of the slurry. The barb 207e is made of a material with good flexibility, and is in the shape of a spike. It tends to shrink from top to bottom, and the larger it is, the stronger its hardness is, that is, the sharper part at the bottom can be easily moved.

[0059] A first inclined surface H1 is provided on the top plate 206e, and a second inclined surface H2 is provided on the barb 207e. The second inclined surface H2 contacts the inner wall of the inclined groove U, and the first inclined surface H1 contacts the second inclined surface H2.

[0060] The second inclined surface H2 is inclined outward and is buckled in the inclined groove U. When the valve stem 203 moves upward under greater pressure, the fixed tube 206a and the top plate 206e move upward first. At this time, the first inclined surface H1 on the top plate 206e contacts the second inclined surface H2 and moves along the inclined surface of the first inclined surface H1, so that the second inclined surface H2 on the barb 207e moves to the hole of the inclined groove U. At this time, the barb 207e loses its limiting effect, and the movable ring 206b will move upward under the thrust of the second spring 206c and push the limiting plate 207c open. At this time, the limiting plate 207c has a tendency to gather inward under the thrust of the third spring 207d. At this time, the limiting plate 207c is supported and limited by the retaining ring 206g to prevent it from rotating too much, thereby facilitating its reset when the pressure is reduced.

[0061] When in use, the grouting pipe 104a and the air bag 104b are placed in the grouting hole S, and then the air compressor 102 is used to continuously add air to the slurry box 101. When the pressure in the slurry box 101 is greater than ten MPa, the high-pressure slurry is injected into the valve body 201 through the connecting pipe 103. At this time, the bottom end of the valve stem 203 is under pressure, and the excessive pressure pushes it upward. When it moves upward, the fixed pipe 206a and the top plate 206e move upward first. At this time, the first inclined surface H1 on the top plate 206e contacts the second inclined surface H2, and makes it The second inclined surface H2 on the barb 207e moves to the opening of the inclined groove U along the inclined surface H1, and the barb 207e loses its limiting effect. The movable ring 206b moves upward under the thrust of the second spring 206c and pushes the limiting plate 207c open. At this time, the limiting plate 207c has a tendency to gather inwardly under the thrust of the third spring 207d and sticks to the retaining ring 206g to prevent the inward rotation angle from being too large. The high-pressure slurry enters the grouting pipe 104a and flows into the grouting hole through the multiple through holes M. S, at this time, due to the blocking effect of the two air bags 104b, the high-pressure slurry can only spread from the middle of the two air bags 104b to the surroundings, so that it can be evenly distributed in the polluted land in the shape of tree roots. During the continuous eruption, the pressure in the slurry box 101 decreases, and the pressure on the valve stem 203 will also decrease. The first spring 205e applies a downward pulling force to the movable disk 205c, so that the valve stem 203 slowly descends. When the pressure is less than 5 MPa, the bottom end of the valve stem 203 will block the flow hole on the valve seat 202, and the third spring 207 d. Push the limit plate 207c to press it on the movable ring 206b. The pressure will push the valve stem 203 downward for a certain distance until the barb 207e is located outside the inclined groove U. Then the valve stem 203 is slowly pushed upward by the pressure of the slurry. At this time, the barb 207e will be buckled in the inclined groove U. This cycle is repeated until the slurry can no longer be added. The air compressor 102 and the valve are manually closed, and then the air bag 104b is deflated. The grouting pipe 104a is manually lifted up for a distance and the grouting operation is performed again until the grouting of the entire contaminated area is completed.

[0062] Example 3

[0063] Reference Figures 1 to 8 , which is the third embodiment of the present invention, and is based on the first two embodiments.

[0064] Specifically, the construction steps include:

[0065] Before construction, conduct site pollutant assessment and design to determine the pollutants and scope of the polluted site;

[0066] Then cement-soil mixing piles are used to construct the outer layer of the contaminated land. There is a partial overlap between every two adjacent mixing piles to prevent the slurry from flowing out during the infiltration process. Electroosmotic electrodes are distributed inside the cement, and the cement is charged.

[0067] Then, evenly distributed grouting holes S are drilled on the contaminated ground. These grouting holes S are distributed inside the cement-soil mixing piles and are evenly distributed in a rectangular shape.

[0068] Using the grouting member 104 to pressurize and inject grout into the grouting hole S, so that the grout is evenly distributed at each position in the contaminated land;

[0069] After the slurry solidifies, the graphite electrode rods are inserted into the grouting holes S one by one, and the positive and negative electrodes are staggered, and the adjacent ones are different. The current flows from the positive electrode to the negative electrode, forming a more stable, rectangular arrangement, increasing the contact range, and improving the flow range and flow efficiency of electrons. The graphite electrode rod tube is made of graphite, which has low cost, good conductivity, and no polarization.

[0070] Power is supplied and electroosmotic liquid is injected for solidification. The electroosmotic liquid is ultrafine cement slurry and contains some chemical agents to enhance conductivity. The strength formation time generally takes 30 to 90 days.

[0071] Complete the construction.

[0072] 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 preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A stamping type mesh electroosmotic solidification device for water contaminated sites, characterized in that: include, A grouting assembly (100) comprises a slurry tank (101), an air compressor (102), a connecting pipe (103) and a grouting piece (104), wherein the air compressor (102) is fixed to the slurry tank (101), the connecting pipe (103) is connected to one side of the slurry tank (101), the grouting piece (104) is arranged at the end of the connecting pipe (103), grouting holes (S) are evenly distributed on the contaminated site, and the grouting piece (104) is located in the grouting holes (S); and A control valve assembly (200) is arranged on the connecting pipe (103), comprising a valve body (201), a valve seat (202), a valve stem (203), an installation box (204), an adjusting member (205), a trigger member (206) and a stop member (207); the valve seat (202) is fixed in the valve body (201); the valve stem (203) is arranged above the valve seat (202); the installation box (204) is fixed to the top of the valve body (201); the adjusting member (205) is arranged at the top of the valve stem (203) and is located in the installation box (204); the trigger member (206) is arranged on the adjusting member (205); and the stop member (207) is arranged on both sides of the inner wall of the installation box (204) and cooperates with the trigger member (206); The grouting part (104) comprises a grouting pipe (104a) and an air bag (104b); the grouting pipe (104a) is connected to the end of the connecting pipe (103) and is located in the grouting hole (S); the air bag (104b) is fixed on the grouting pipe (104a); a through hole (M) is provided on the grouting pipe (104a); and the through hole (M) is located between the two air bags (104b); The adjusting member (205) comprises a threaded rod (205a), a sleeve (205b), a movable disk (205c), a guide rod (205d) and a first spring (205e), wherein the threaded rod (205a) is rotatably connected to the top end of the valve stem (203), the sleeve (205b) is arranged outside the threaded rod (205a), and the top end extends to the top of the installation box (204), and the movable disk (205c) is threadedly connected to the threaded rod (205a). 05a), and is located between the sleeve (205b) and the valve stem (203), the guide rod (205d) is fixed to the bottom end of the sleeve (205b), the top of the valve stem (203) is provided with a guide groove (K), the bottom end of the guide rod (205d) passes through the movable disk (205c) and extends into the guide groove (K), and the two ends of the first spring (205e) are respectively fixed to the movable disk (205c) and the valve body (201).

2. The punching type mesh electroosmosis solidification device for water contaminated sites according to claim 1, characterized in that: The adjusting member (205) further comprises a limit block (205f) and a handle (205g), wherein the limit block (205f) is fixed to the inner wall of the sleeve (205b), an annular groove (J) is provided on the threaded rod (205a), the limit block (205f) slides in the annular groove (J), and the handle (205g) is fixed to the top end of the threaded rod (205a).

3. The punching type mesh electroosmosis solidification device for water contaminated sites according to claim 2, characterized in that: The trigger member (206) comprises a fixed tube (206a), a movable ring (206b), a second spring (206c), a baffle (206d) and a top plate (206e); the fixed tube (206a) is fixed on the sleeve (205b); the movable ring (206b) slides on the sleeve (205b) and is located above the fixed tube (206a); two ends of the second spring (206c) are respectively fixed to the fixed tube (206a) and the movable ring (206b); the baffle (206d) is fixed to both sides of the bottom of the movable ring (206b); and the top plate (206e) is fixed to both sides of the top of the fixed tube (206a).

4. The punching type mesh electroosmosis solidification device for water contaminated sites as claimed in claim 3, characterized in that: The trigger member (206) further comprises a fixing strip (206f) and a retaining ring (206g), wherein the fixing strip (206f) is fixed to both sides of the inner wall of the retaining plate (206d), a limiting groove (N) is provided on the fixing tube (206a), the fixing strip (206f) slides in the limiting groove (N), and the retaining ring (206g) is fixed to the sleeve (205b) and is located at the top of the movable ring (206b).

5. The punching type mesh electroosmosis solidification device for water contaminated sites as claimed in claim 4, characterized in that: The limiting member (207) comprises a receiving plate (207a), a hinge seat (207b), a limiting plate (207c) and a third spring (207d); the receiving plate (207a) is fixed to both sides of the inner wall of the installation box (204); the hinge seat (207b) is fixed to the top of the receiving plate (207a); the limiting plate (207c) is hinged to the receiving plate (207a) through the hinge seat (207b), and cooperates with the movable ring (206b); and the two ends of the third spring (207d) are respectively fixed to the limiting plate (207c) and the installation box (204).

6. The punching type mesh electroosmosis solidification device for water contaminated sites according to claim 5, characterized in that: The limiting member (207) further comprises a barb (207e) which is fixed to the inner side of the limiting plate (207c); an inclined groove (U) is provided on the movable ring (206b), and the barb (207e) is located in the inclined groove (U).

7. The punching type mesh electroosmosis solidification device for water contaminated sites according to claim 6, characterized in that: The top plate (206e) is provided with a first inclined surface (H1), the barb (207e) is provided with a second inclined surface (H2), the second inclined surface (H2) is in contact with the inner wall of the inclined groove (U), and the first inclined surface (H1) is in contact with the second inclined surface (H2).

8. A construction method of a stamping mesh electroosmotic solidification device for a water-contaminated site, characterized in that: Based on the stamping type mesh electroosmosis solidification device for water contaminated sites according to any one of claims 1 to 7, the device also includes the following construction steps: Before construction, conduct site pollutant assessment and design; Use cement-soil mixing piles to construct the outer layer of the contaminated land; Drill evenly distributed grouting holes (S) on the contaminated ground; Using a grouting member (104) to inject grout into the grouting hole (S) under pressure; After the slurry solidifies, the graphite electrode rods are inserted into the grouting holes (S) one by one; Power is applied and electroosmotic fluid is injected for solidification.

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