A directional accelerated crystallization device for tunnel drainage system and use method thereof

Abstract

The invention relates to the technical field of tunnel drainage, and specifically discloses a directional accelerated crystallization device for a tunnel drainage system and a method for using the device. The device comprises a crystallization pool component, a felt layer and a medicine box component, wherein the crystallization pool component comprises a crystallization pool, and a pool cover is arranged on the top of the crystallization pool; the crystallization pool comprises a front wall, a rear wall, an outer wall and an inner wall; the medicine box component comprises a medicine storage box, and a horizontal mesh medicine box is arranged at the bottom of the medicine storage box, and the mesh medicine box is a double-layer hollow mesh structure, and the bottom of the medicine storage box is connected to the mesh medicine box, and reactive drugs are placed in the mesh medicine box; the invention takes into account the influence of temperature, flow rate, chemical drugs, crystallization pool shape and surface morphology on the crystallization of tunnel water, and can realize the idea of ​​directional crystallization of the tunnel drainage system, and at the same time has the advantages of simple structure, easy medicine replenishment, cleaning, repair and maintenance, and can be applied to tunnels that have been put into operation, and can also be applied to tunnels in the design stage.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel drainage, and in particular to a directional accelerated crystallization device for a tunnel drainage system and a use method thereof. Background Art

[0002] With the continuous development of social economy and the continuous advancement of highway construction, my country's tunnel engineering has made great progress and construction, and the number and mileage of tunnels are currently ranked first in the world. However, due to factors such as design level, construction quality, material quality, geological conditions and operating environment, a large number of tunnels have different degrees of damage after being put into operation, and tunnel water damage is often the cause of other damages.

[0003] According to statistics, 70% of tunnels in my country currently have water leakage, and 30% of them have serious leakage. One of the main reasons for this phenomenon is that the drainage performance of the tunnel drainage system is reduced or even fails due to severe crystallization. Therefore, the discussion, research and treatment of the crystallization problem of tunnel drainage pipes are increasingly receiving attention from practitioners.

[0004] The main components of crystals in the tunnel drainage system are calcium carbonate and magnesium carbonate crystals. The surrounding rock fissure water enters the tunnel drainage system from the surrounding rock through the primary branch, bringing calcium and magnesium ions in the surrounding rock and primary branch. In an alkaline environment, they react with carbonate ions to precipitate calcium carbonate and magnesium carbonate crystals, blocking the drainage pipes. Most of the current solutions focus on descaling and scale prevention. Descaling technology mainly uses high-pressure water guns, ultrasound, chemicals and other methods to crush, destroy and dissolve the crystals after they are formed, while scale prevention technology uses electromagnetic, coating, filtration, pipe flocking and other methods to reduce the probability of pipe crystallization at the source, increase the difficulty of pipe scale accumulation, and thus achieve the effect of treating pipe crystallization.

[0005] In general, these methods are often limited by objective conditions such as the closed tunnel drainage pipes and buried inside the lining, and it is difficult to achieve the expected results. Some methods will also cause certain damage to the drainage pipes and the surrounding environment of the tunnel. Therefore, it is urgent to develop a comprehensive and effective treatment measure to deal with the crystallization of tunnel drainage pipes. Summary of the invention

[0006] The technical problem to be solved by the present invention is to address the deficiencies of the above-mentioned prior art and provide a directional accelerated crystallization device and a method of use for a tunnel drainage system. The present invention can cause the groundwater in the tunnel longitudinal drainage pipe to be directional crystallized and deposited inside the crystallization pool, thereby reducing the probability of deposition in other parts and achieving efficient treatment of the crystallization problem of the tunnel drainage pipe.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] (I) A directional accelerated crystallization device for a tunnel drainage system, comprising a crystallization pool assembly, a felt layer, an anti-drifting net and a medicine box assembly; the crystallization pool assembly comprises a crystallization pool, and a pool cover is arranged on the top of the crystallization pool; the crystallization pool comprises a front wall, a rear wall, an outer wall and an inner wall; the medicine box assembly comprises a medicine storage box, and the medicine storage box is a box body inclined along the longitudinal direction of the crystallization pool and inclined toward the outer wall, and a horizontal mesh medicine box is arranged at the bottom of the medicine storage box, and the mesh medicine box is a double-layer hollow mesh structure; the bottom of the medicine storage box is connected to the mesh medicine box; reactive drugs are placed in the mesh medicine box; the front end of the medicine storage box is in contact with the inner surface of the front wall, and the rear wall of the medicine storage box is in contact with the inner surface of the front wall. The end contacts the inner surface of the rear wall, and the mesh medicine box extends toward the outer wall of the crystallization pool and contacts the inner surface thereof; a first water inlet pipe is arranged on the front wall between the mesh medicine box and the medicine box, and a second water inlet pipe is arranged on the rear wall between the mesh medicine box and the medicine box; a first drainage pipe is arranged on the inner wall; the height of the first water inlet pipe is equal to the height of the second water inlet pipe; the height of the first drainage pipe is lower than the height of the first water inlet pipe and the height of the second water inlet pipe; the felt layer is arranged at the bottom of the crystallization pool, and felt is arranged on the felt layer, and calcium carbonate seeds are contained in the felt, and the anti-drifting net is arranged between the inner wall and the medicine storage box.

[0009] Furthermore, it also includes a pool bottom heating cable, a pool wall heating cable and a power supply, the pool bottom heating cable and the pool wall heating cable are electrically connected to the power supply respectively; the pool bottom heating cable is arranged at the bottom of the crystallization pool; the pool wall heating cable is arranged on the side wall of the crystallization pool, and the heating temperature of the pool bottom heating cable and the pool wall heating cable is between 50 and 80°C.

[0010] Furthermore, it also includes a first limiting groove and a second limiting groove; the first limiting groove is obliquely set on the inner surface of the front wall of the crystallization pool, and the second limiting groove is obliquely set on the inner surface of the rear wall of the crystallization pool, and the medicine box assembly is set on the first limiting groove and the second limiting groove.

[0011] Furthermore, it also includes a first support platform, a second support platform, a third support platform and a fourth support platform, the first support platform and the second support platform are horizontally arranged on the inner surface of the inner wall of the crystallization pool, the third support platform and the fourth support platform are horizontally arranged on the right side wall of the medicine storage box, the first support platform, the second support platform, the third support platform and the fourth support platform are at the same height, and the first support platform, the second support platform, the third support platform and the fourth support platform are provided with the anti-floating net.

[0012] Furthermore, the anti-drifting net is a single-layer net panel, and the mesh size of the anti-drifting net is 1.0 mm to 4.0 mm.

[0013] Furthermore, the horizontal cross-section of the crystallization pool is trapezoidal.

[0014] Furthermore, the reaction agent comprises CO3 2- Alkaline pills.

[0015] Furthermore, the alkaline pellets are Na2CO3 and / or NaHCO3.

[0016] (II) A directional accelerated crystallization device for a tunnel drainage system and a method for using the device, wherein a central drainage pipe is provided at the bottom of the tunnel along the length of the tunnel, and a plurality of transverse drainage pipes are connected to the left and right sides of the central drainage pipe; a plurality of parallel annular drainage pipes are arranged at intervals in the tunnel arch, and a longitudinal drainage pipe is provided at the left and right sides of the bottom of the tunnel; the left and right ends of the bottom of each annular drainage pipe are connected to the longitudinal drainage pipes on the left and right sides of the bottom of the tunnel; the method for using the accelerated crystallization device comprises the following steps:

[0017] Step 1, the accelerated crystallization device is connected in series to the longitudinal drainage pipe between every two of the annular drainage pipes; the first water inlet pipe and the second water inlet pipe are both connected to the longitudinal drainage pipe, and the first drainage pipe is connected to the transverse drainage pipe;

[0018] Step 2, adding a reaction drug into the mesh clamp medicine box, and then setting the medicine box assembly on the first limiting groove and the second limiting groove in the crystallization pool;

[0019] Step 3, turn on the power supply and regularly add reaction drugs to the medicine box assembly.

[0020] The superior effect of the present invention is that it takes into account the influence of temperature, flow rate, chemicals, crystallization pool shape and surface morphology on the crystallization of tunnel water, and can realize the idea of ​​directional crystallization of tunnel drainage system. At the same time, it has the advantages of simple structure and easy replenishment, cleaning, repair and maintenance. It can be applied to tunnels that have been put into operation and can also be applied to tunnels in the design stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the shell of the crystallization pool of the present invention;

[0022] Figure 2 It is a schematic diagram of the components of the directional accelerated crystallization pool of the present invention;

[0023] Figure 3 This is a schematic diagram of the tunnel drainage system;

[0024] Figure 4 It is a schematic diagram of the crystal pool assembly of the present invention;

[0025] Figure 5 It is a schematic diagram of the water flow direction of the crystallization pond of the present invention;

[0026] above Figures 1 to 5 In: 1. Crystallization pool assembly; 101. Crystallization pool; 102. Pool cover; 103. Front wall; 104. Rear wall; 105. Outer wall; 106. Inner wall; 2. Felt layer; 3. Medicine box assembly; 301. Medicine storage box; 302. Mesh medicine box; 4. First water inlet pipe; 5. Second water inlet pipe; 6. First drain pipe; 7. Pool bottom heating cable; 8. Pool wall heating cable; 9. First limiting groove; 10. Second limiting groove; 11. Anti-drifting net; 12. First pedestal; 13. Second pedestal; 14. Central drain pipe; 15. Horizontal drain pipe; 16. Annular drain pipe; 17. Longitudinal drain pipe. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] In the following description, specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in a variety of other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Please refer to Figures 1 to 5 :

[0030] (I) A directional accelerated crystallization device for a tunnel drainage system, comprising a crystallization pool component 1, a felt layer 2, an anti-drifting net 11 and a medicine box component 3; the crystallization pool component comprises a crystallization pool 101, and a pool cover 102 is arranged on the top of the crystallization pool 101; the crystallization pool 101 comprises a front wall 103, a rear wall 104, an outer wall 105 and an inner wall 106; the medicine box component 3 comprises a medicine storage box 301, and the medicine storage box 301 is a box body inclined along the longitudinal direction of the crystallization pool 101 and inclined toward the outer wall The bottom of the medicine storage box 301 is provided with a horizontal mesh medicine box 302, and the mesh medicine box 302 is a double-layer hollow mesh structure; the bottom of the medicine storage box 301 is connected to the mesh medicine box 302; the mesh medicine box 302 contains reactive drugs; the front end of the medicine storage box 301 contacts the inner surface of the front wall 103, the rear end of the medicine storage box 301 contacts the inner surface of the rear wall 104, and the anti-floating net 11 is arranged between the inner wall 106 and the medicine storage box 301;

[0031] The mesh medicine box 302 extends toward the outer wall 105 of the crystallization pool 101 and contacts the inner surface thereof; a first water inlet pipe 4 is arranged on the front wall 103 between the mesh medicine box 302 and the medicine storage box 301, and a second water inlet pipe 5 is arranged on the rear wall 104 between the mesh medicine box 302 and the medicine storage box 301; a first drainage pipe 6 is arranged on the inner wall 106; the height of the first water inlet pipe 4 is equal to the height of the second water inlet pipe 5; the height of the first drainage pipe 6 is lower than the height of the first water inlet pipe 4 and the height of the second water inlet pipe 5; the felt layer 2 is arranged at the bottom of the crystallization pool 101, and the felt layer is provided with felt, and the felt contains calcium carbonate seeds.

[0032] In the above embodiments, the medicine storage box is a box body inclined along the longitudinal direction of the crystallization pool and arranged obliquely to the outer wall, which can not only store medicines, but also use the inclined surface to change the water flow path and the water flow cross-sectional area, thereby controlling the flow direction and flow rate of the water, preventing the water body from moving horizontally, accelerating the flow rate of the water on the outer wall of the pool, and reducing the flow rate of the water at the bottom of the pool; the mesh medicine box is a double-layer hollow mesh structure connected to the outer bottom of the medicine storage box, located between the medicine storage box and the outer wall of the crystallization pool, and the medicine inside it is peeled off with the high-speed water flow and acts at the bottom of the crystallization pool. After being completely dissolved, the medicine in the medicine storage box automatically rolls into the mesh medicine box due to gravity. The medicine should be selected to contain CO3 2- The alkaline pill-shaped medicine can accelerate crystal formation and facilitate medication.

[0033] Furthermore, it also includes a pool bottom heating cable 7, a pool wall heating cable 8 and a power supply, and the pool bottom heating cable 7 and the pool wall heating cable 8 are electrically connected to the power supply respectively; the pool bottom heating cable 7 is arranged at the bottom of the crystallization pool 101; the pool wall heating cable 8 is arranged on the side wall of the crystallization pool 101, and the heating temperature of the pool bottom heating cable 7 and the pool wall heating cable 8 is between 50 and 80°C.

[0034] Furthermore, it also includes a first limiting groove 9, a second limiting groove 10 and an anti-drifting net 11; the anti-drifting net 11 is arranged between the inner wall 106 and the medicine storage box 301; the first limiting groove 9 is obliquely arranged on the inner surface of the front wall 103 of the crystallization pool 101, and the second limiting groove 10 is obliquely arranged on the inner surface of the rear wall 104 of the crystallization pool 101, and the medicine box assembly 3 is arranged on the first limiting groove 9 and the second limiting groove 10.

[0035] Furthermore, it also includes a first support platform 12, a second support platform 13, a third support platform and a fourth support platform. The first support platform 12 and the second support platform 13 are horizontally arranged on the inner side of the inner wall 106 of the crystallization pool 101, and the third support platform and the fourth support platform are horizontally arranged on the right side wall of the medicine storage box 301. The first support platform 12, the second support platform 13, the third support platform and the fourth support platform are at the same height, and the anti-floating net 11 is arranged on the first support platform 12, the second support platform 13, the third support platform and the fourth support platform.

[0036] Furthermore, the anti-drifting net 11 is a single-layer net panel, and the mesh size of the anti-drifting net 11 is 1.0 mm to 4.0 mm.

[0037] Furthermore, the horizontal cross section of the crystallization pool 101 is trapezoidal.

[0038] Furthermore, the reaction agent comprises CO3 2- Alkaline pills.

[0039] Furthermore, the alkaline pellets are Na2CO3 and / or NaHCO3.

[0040] In the above embodiments, the mesh size of the anti-floating net 11 should meet the requirements of not hindering the passage of water and preventing the crystals from floating up; the felt layer has relatively sparse felt wool, and a certain number of CaCO3 and / or MgCO3 crystal seeds are scattered inside the felt wool. The sparse felt wool can filter the crystals without blocking the water flow, and at the same time has a larger specific surface area relative to the horizontal plane, and can attach more crystals. The crystal seeds scattered in the felt wool can also make the crystallization reaction skip the nucleation stage, further attract the crystals to adhere, and promote crystal growth.

[0041] (II) A directional accelerated crystallization device for a tunnel drainage system and a method for using the device, wherein a central drainage pipe 14 is provided at the bottom of the tunnel along the length of the tunnel, and a plurality of transverse drainage pipes 15 are connected to the left and right sides of the central drainage pipe; a plurality of parallel annular drainage pipes 16 are arranged at intervals in the tunnel arch, and a longitudinal drainage pipe 17 is provided at the left and right sides of the bottom of the tunnel; the left and right ends of the bottom of each annular drainage pipe 16 are connected to the longitudinal drainage pipes 17 on the left and right sides of the bottom of the tunnel; the method for using the accelerated crystallization device comprises the following steps:

[0042] Step 1, the accelerated crystallization device is connected in series to the longitudinal drainage pipe 17 between every two of the annular drainage pipes 16; the first water inlet pipe 4 and the second water inlet pipe 5 are both connected to the longitudinal drainage pipe, and the first drainage pipe 6 is connected to the transverse drainage pipe 15;

[0043] Step 2, adding reaction drugs into the mesh clamp medicine box 302, and then setting the medicine box assembly 3 on the first limiting groove 9 and the second limiting groove 10 in the crystallization pool 101;

[0044] Step 3, turn on the power supply and regularly add reaction drugs to the medicine box assembly.

[0045] In the above embodiments, after the water flow from the first longitudinal drainage pipe and / or the second longitudinal drainage pipe enters the crystallization pool, it spontaneously flows toward the transverse drainage pipe due to the water head difference. However, the obstruction of the medicine box assembly forces the water flow to change from horizontal motion to downward flow along the outer wall. The smaller water flow section formed by the inclined medicine box assembly and the outer wall of the narrow side of the crystallization pool causes the water flow to accelerate, peeling off the medicine in the mesh medicine box and carrying the medicine to the bottom felt layer. The larger water flow section and the obstruction of the felt cause the water flow velocity to decrease, creating a relatively stable environment for crystallization and deposition. At the same time, the pool bottom heating cable and the pool wall heating cable increase the water temperature, so that the Ca in the water is 2+ and Mg 2+ It can fully react with the drug to promote crystallization. The crystals are blocked by the felt hair and attracted by the crystal seeds, and finally adhere to the felt hair layer. After the crystals are precipitated, the water body is affected by the head difference and flows upward into the horizontal drainage pipe, and finally merges into the central drainage pipe and is discharged out of the hole.

[0046] Although the present invention has been described in detail in this specification by means of general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements may be made thereto on the basis of the present invention. Therefore, these modifications or improvements made without departing from the present invention all fall within the scope of protection claimed by the present invention.

Claims

1. A directional accelerated crystallization device for a tunnel drainage system, characterized in that: It comprises a crystallization pool component (1), a felt layer (2), an anti-drifting net (11) and a medicine box component (3); The crystallization pool assembly comprises a crystallization pool (101), and a pool cover (102) is arranged on the top of the crystallization pool (101); the crystallization pool (101) comprises a front wall (103), a rear wall (104), an outer wall (105) and an inner wall (106); The medicine box assembly (3) comprises a medicine storage box (301), wherein the medicine storage box (301) is a box body arranged obliquely along the longitudinal direction of the crystallization pool (101) and biased toward the outer wall; a horizontal mesh medicine box (302) is arranged at the bottom of the medicine storage box (301), and the mesh medicine box (302) is a double-layer hollow mesh structure; the bottom of the medicine storage box (301) is connected to the mesh medicine box (302); and a reactive drug is placed in the mesh medicine box (302); The front end of the medicine storage box (301) contacts the inner surface of the front wall (103), the rear end of the medicine storage box (301) contacts the inner surface of the rear wall (104), and the mesh medicine clamping box (302) extends toward the outer wall (105) of the crystallization pool (101) and contacts the inner surface thereof; A first water inlet pipe (4) is provided on the front wall (103) between the mesh medicine box (302) and the medicine storage box (301), and a second water inlet pipe (5) is provided on the rear wall (104) between the mesh medicine box (302) and the medicine storage box (301); A first drain pipe (6) is provided on the inner wall (106); The height of the first water inlet pipe (4) is equal to the height of the second water inlet pipe (5); the height of the first drainage pipe (6) is lower than the height of the first water inlet pipe (4) and the height of the second water inlet pipe (5); The bottom of the crystallization pool (101) is provided with the felt layer (2), the felt layer (2) is provided with felt, and the felt contains calcium carbonate seeds; The anti-drifting net (11) is arranged between the inner wall (106) and the medicine storage box (301).

2. The directional accelerated crystallization device for a tunnel drainage system according to claim 1, characterized in that: The invention also comprises a pool bottom heating cable (7), a pool wall heating cable (8) and a power source, wherein the pool bottom heating cable (7) and the pool wall heating cable (8) are electrically connected to the power source respectively; the pool bottom heating cable (7) is arranged at the bottom of the crystallization pool (101); the pool wall heating cable (8) is arranged at the side wall of the crystallization pool (101), and the heating temperature of the pool bottom heating cable (7) and the pool wall heating cable (8) is between 50 and 80°C.

3. The directional accelerated crystallization device for a tunnel drainage system according to claim 2, characterized in that: It also comprises a first limiting groove (9) and a second limiting groove (10); the first limiting groove (9) is obliquely arranged on the inner surface of the front wall (103) of the crystallization pool (101), and the second limiting groove (10) is obliquely arranged on the inner surface of the rear wall (104) of the crystallization pool (101); and the medicine box assembly (3) is arranged on the first limiting groove (9) and the second limiting groove (10).

4. The directional accelerated crystallization device for a tunnel drainage system according to claim 3, characterized in that: The invention also comprises a first support platform (12), a second support platform (13), a third support platform and a fourth support platform, wherein the first support platform (12) and the second support platform (13) are horizontally arranged on the inner surface of the inner wall (106) of the crystallization pool (101), and the third support platform and the fourth support platform are horizontally arranged on the right side wall of the medicine storage box (301), and the first support platform (12), the second support platform (13), the third support platform and the fourth support platform are at the same height, and the anti-floating net (11) is arranged on the first support platform (12), the second support platform (13), the third support platform and the fourth support platform.

5. The directional accelerated crystallization device for a tunnel drainage system according to claim 4, characterized in that: The anti-drifting net (11) is a single-layer net panel, and the mesh size of the anti-drifting net (11) is 1.0 mm to 4.0 mm.

6. The directional accelerated crystallization device for a tunnel drainage system according to claim 5, characterized in that: The horizontal cross section of the crystallization pool (101) is trapezoidal.

7. The directional accelerated crystallization device for a tunnel drainage system according to claim 6, characterized in that: The reagent comprises CO3 2- Alkaline pills.

8. The directional accelerated crystallization device for a tunnel drainage system according to claim 7, characterized in that: The alkaline pill-shaped drug is Na2CO3 and / or NaHCO3.

9. A method for using the directional accelerated crystallization device for a tunnel drainage system according to any one of claims 1 to 8, characterized in that: A central drainage pipe (14) is arranged at the bottom of the tunnel along the length direction of the tunnel, and a plurality of transverse drainage pipes (15) are respectively connected to the left and right sides of the central drainage pipe (14); a plurality of parallel annular drainage pipes (16) are arranged at intervals in the tunnel arch, and a longitudinal drainage pipe (17) is respectively arranged on the left and right sides of the bottom of the tunnel; the left and right ends of the bottom of each annular drainage pipe (16) are respectively connected to the longitudinal drainage pipes (17) on the left and right sides of the bottom of the tunnel; the method for using the accelerated crystallization device comprises the following steps: Step 1, the accelerated crystallization device is connected in series to the longitudinal drainage pipe (17) between every two of the annular drainage pipes (16); the first water inlet pipe (4) and the second water inlet pipe (5) are both connected to the longitudinal drainage pipe (17), and the first drainage pipe (6) is connected to the transverse drainage pipe (15); Step 2, adding a reactive drug into the mesh-shaped medicine box (302), and then placing the medicine box assembly (3) on the first limiting groove (9) and the second limiting groove (10) in the crystallization pool (101); Step 3, turn on the power supply and regularly add reaction drugs to the medicine box assembly.

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