A device and construction method for ultra-deep seamless connection membrane under mud conditions

Abstract

The present invention relates to the field of underground engineering technology, specifically to a device and construction method for ultra-deep seamless connection of planted membranes under mud conditions, including an anti-seepage membrane body, a membrane material positioning seat component group, a base component group, a seat placement clamp component group, a jointer placement component group and a membrane material joint component group. The present invention forms an efficient anti-seepage curtain wall by accurately controlling the verticality of the anti-seepage membrane body, seamless connection of membrane materials in ultra-deep grooves, and filling with cement-bentonite mixed slurry, greatly improving the engineering anti-seepage performance and stability, and meeting various engineering requirements.

Description

Technical Field

[0001] The invention relates to the technical field of underground engineering, and in particular to a device and a construction method for ultra-deep seamless connection membrane planting under mud conditions. Background Art

[0002] In the field of environmental governance and underground engineering, vertical anti-seepage curtain wall technology is widely used in pollution isolation, groundwater anti-seepage and deep foundation pit support. The traditional construction process is as follows: 1. Use hydraulic grab, double-wheel milling or chain trenching machine to dig trenches with a width of more than 600mm and a trench depth of 30-50m; 2. Inject bentonite slurry (density 1.05-1.15g, cm³) into the trench to maintain the stability of the trench wall; 3. Cut the anti-seepage membrane (such as 2mm thick HDPE membrane) into a single section length of 10-15m, and lower it vertically to the bottom of the trench by a crane or winch; 4. Use a hot melt welding machine to overlap adjacent membrane sections at the notch; pour cement-bentonite slurry (ratio 1:4-1:6) into the trench to fill the gap between the membrane material and the trench wall, and form a composite anti-seepage body after solidification.

[0003] In the construction of ultra-deep trenches mixed with mud, the buoyancy of the mud on the anti-seepage membrane increases significantly due to the great depth of the trench, which makes it difficult to accurately control the verticality of the anti-seepage membrane when lowering it by crane or winch, causing the anti-seepage membrane to easily deflect, twist or even fold in the trench, seriously affecting the subsequent overlap quality and the overall anti-seepage effect;

[0004] In the prior art, only the adjacent anti-seepage membrane joints at the slot position are hot-melt connected, and cement, bentonite slurry or self-setting mortar is poured into the slot to solidify and fill the gaps between the membrane materials. However, adjacent membrane materials with a depth greater than ten meters in the slot have obvious gaps because they cannot be joined. From the perspective of anti-seepage performance, these gaps that are not effectively connected become weak links for leakage. Groundwater has a strong osmotic pressure, especially in ultra-deep slot environments, the pressure will increase sharply with depth. Under the action of long-term high-pressure groundwater, the deep gaps in the slot are difficult for cement, bentonite slurry or self-setting mortar to completely resist the erosion and scouring of water flow, and their filling effect will gradually weaken, causing groundwater to continue to infiltrate, which greatly reduces the overall anti-seepage function of the anti-seepage curtain wall, and it is impossible to achieve the expected pollution isolation and groundwater anti-seepage goals. Summary of the invention

[0005] In order to overcome the above-mentioned technical problems, the purpose of the present invention is to provide a device and construction method for ultra-deep seamless connection of membrane planting under mud conditions, so as to solve the problem proposed in the above-mentioned background technology that when a crane or winch lowers the anti-seepage membrane, it is difficult to accurately control the verticality due to the large buoyancy of the mud, causing the membrane body to deflect, twist, and fold, affecting the overlap and anti-seepage effect.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for ultra-deep seamless connection of planted membranes under mud conditions, comprising: an anti-seepage membrane body, wherein the anti-seepage membrane body is provided with multiple groups; a membrane material positioning seat component group, wherein the membrane material positioning seat component group is assembled at one end of the anti-seepage membrane body, and is used to maintain the vertical posture of the anti-seepage membrane body in the mud environment of the trough body; a hanging base component group, wherein the top of the hanging base component group is connected to the winch of the engineering crane through a high-strength steel cable to form a power transmission connection; a membrane material joint component group, a seat placement clamp component group and a jointer placement component group, wherein the seat placement clamp component group and the jointer placement component group are alternately assembled at the bottom of the hanging base component group in a detachable manner; when the seat placement clamp component group and the hanging base component group are combined, they are used to accurately lower the membrane material positioning seat component group to the bottom of the ultra-deep trough body; when the jointer placement component group and the hanging base component group are combined, they are used to implement joining in a mud environment at the side edges of adjacent anti-seepage membrane bodies.

[0007] Preferably: the length of the anti-seepage membrane body can be adjusted and cut according to the depth of the groove body, the membrane material positioning seat component group includes an I-shaped base body, and the I-shaped base body is provided with membrane material groove one and membrane material groove two corresponding to the anti-seepage membrane body, one end of the anti-seepage membrane body is inserted into the membrane material groove one, and the inserted part of the anti-seepage membrane body is fixed in the membrane material groove one by a bolt assembly, side convex shells are installed on both sides of the I-shaped base body, and side slots are provided inside the side convex shells, the bottom of the I-shaped base body contacts the bottom of the groove body, and the two sides of the I-shaped base body contact the side walls of the groove body.

[0008] Preferably, the suspension base component group includes a middle frame, the top of the middle frame is fixedly connected to an upper hanger, the bottom of the middle frame is fixedly connected to a lower mounting plate, the upper hanger is connected to one end of a steel cable, and a counterweight is installed inside the middle frame.

[0009] Preferably: the seat placement clamp component group includes a middle shell body, the top of the middle shell body is fixedly connected with an upper mounting plate 1, the upper mounting plate 1 and the lower mounting plate are detachably connected, a side motor box is installed on the side of the middle shell body, a reduction motor component is installed inside the side motor box through a mounting frame, the working end of the reduction motor component is fixedly connected with a long shaft rod, the long shaft rod is fixedly connected with a worm component through a through hole, the worm component is meshed with a worm wheel component, the worm wheel component is fixedly connected with a transverse axis rod through a through hole, both ends of the transverse axis rod are connected with a screw rod component, the screw rod component is connected to an outer mounting frame through a bearing, the screw rod component is connected to a long clamping claw component through a nut pair, the end of the long clamping claw component away from the outer mounting frame is fixedly connected with an insert block, a motor wiring harness component is installed on the top of the reduction motor component, and a guide frame body is installed on the side of the middle shell body.

[0010] Preferably: a cavity is provided inside the middle shell, the long shaft rods are connected to the side motor box and the middle shell through bearings, three groups of worm parts, worm gear parts and cross-axis rods are provided, and the three groups of worm parts, worm gear parts and cross-axis rods are evenly distributed in the cavity of the middle shell.

[0011] Preferably: both ends of the transverse axis rod are connected to the middle shell through bearings, and a rotating sealing sleeve is also provided outside the bearing connection position, the outer mounting frame is installed on the side of the middle shell by bolts, two groups of long clamping jaws and plug-in blocks are provided, and the two groups of long clamping jaws and plug-in blocks are symmetrically distributed on both sides of the middle shell, and the plug-in blocks are used to be inserted into the side slots.

[0012] Preferably: the motor harness is electrically connected between the reduction motor component and an external controller, and the reduction motor component can be controlled by operating the external controller. The guide frame is provided with two groups, and the two groups of guide frames are symmetrically installed on both sides of the middle shell body. A guide wheel is rotatably installed on the guide frame, and the guide wheel is in contact with the side wall of the slot body.

[0013] Preferably: the seam joint placement component group includes a triangular shell, the top of the triangular shell is fixedly connected to an upper mounting plate 2, the upper mounting plate 2 and the lower mounting plate are detachably connected, a movable plug-in and an electric telescopic rod are arranged inside the triangular shell, the movable plug-in is in sliding contact with the triangular shell through a slide groove, the electric telescopic rod is installed in the triangular shell, and the working end of the electric telescopic rod is fixedly connected to the movable plug-in, and the electric telescopic rod is electrically connected to an external controller.

[0014] Preferably: the membrane material seam component group includes a seam vertical plate, the seam vertical plate is provided with membrane material side groove 1 and membrane material side groove 2, a center connecting membrane is installed inside the seam vertical plate through a groove, seam through groove bodies are opened on both sides of the seam vertical plate, the bottom of the seam vertical plate is in contact with a bottom connecting plate, and the bottom connecting plate is used to contact the I-shaped base body.

[0015] The present invention also provides a construction method, which is implemented based on the above-mentioned ultra-deep seamless connection membrane planting device under mud conditions, and includes the following steps:

[0016] Step 1: Use a rotary drilling rig or hydraulic grab bucket to dig a groove, add mud to maintain the liquid level in the groove; install a laser locator at the groove mouth to calibrate the axis of the anti-seepage membrane body;

[0017] Step 2: Cut the anti-seepage membrane according to the groove depth, insert one end of the membrane into the membrane material groove 1 of the membrane material positioning seat component group, and lock it with the bolt assembly;

[0018] Step 3: Connect the upper mounting plate 1 of the seat clamp component group with the lower mounting plate of the suspension base component group, drive the reduction motor component to insert the plug block into the side slot of the I-shaped base body; lower the suspension base component group at a constant speed with the engineering crane until the I-shaped base body touches the bottom, reversely drive the reduction motor component to make the plug block exit the side slot, and complete the positioning of multiple groups of anti-seepage membrane bodies in the groove;

[0019] Step 4: Replace the jointer placement component group, operate the electric telescopic rod to insert the mobile plug-in into the joint groove body of the joint vertical plate, and lower the membrane material joint component group until the bottom joint plate contacts the I-shaped base body to achieve continuous joints of adjacent anti-seepage membrane bodies;

[0020] Step 5: Pour cement-bentonite mixed slurry to fill the gap, and complete the construction after inspection and repair.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. This application realizes the coordinated operation of the membrane material positioning seat component group, the seat placement clamp component group, and the hanging base component group. The I-shaped base body in the membrane material positioning seat component group is designed to have an "I"-shaped cross-section, which can contact and support the groove wall in both directions to ensure the stability of the position at the bottom of the groove, thereby ensuring the verticality of the anti-seepage membrane body. The seat placement clamp component group drives the worm and worm gear transmission mechanism through the reduction motor component to drive the plug on the long clamping claw component to accurately insert into the side slot of the I-shaped base body, thereby achieving a stable clamping of the membrane material positioning seat component group. During the lowering process, the guide wheel on the guide frame body contacts and guides the side wall of the groove body, so that the lowering process of the anti-seepage membrane body is smooth, effectively solving the problem of difficult control of the verticality of the lowering of the anti-seepage membrane body, and greatly improving the subsequent overlap quality and overall anti-seepage effect;

[0023] 2. The present application utilizes a membrane material joint component group, and the edges of adjacent anti-seepage membrane bodies are clamped respectively by membrane material side groove 1 and membrane material side groove 2 on the joint vertical plate, and the central connecting membrane installed in the internal groove enhances the sealing effect. The electric telescopic rod of the jointer placement component group pushes the mobile plug-in to insert into the joint groove body of the membrane material joint component group, and controls the membrane material joint component group to be lowered along the edge of the adjacent anti-seepage membrane body until the bottom connecting plate contacts the I-shaped base body. Under the action of the mud pressure in the groove, the mud squeezes the edge of the membrane material through the joint groove body, so that it fits tightly with the central connecting membrane, realizing seamless connection of adjacent membrane materials from the bottom of the groove to the groove mouth, effectively solving the problem that deep membrane materials in ultra-deep grooves cannot be jointed, and improving the overall anti-seepage performance of the anti-seepage curtain wall;

[0024] 3. This application achieves seamless connection of membrane materials in ultra-deep trenches by precisely controlling the lowering of the anti-seepage membrane, and then fills the gap between the membrane material and the trench wall and the periphery of the membrane material joint component group with the cement and bentonite mixed slurry poured from the bottom of the trench, thereby enhancing the integrity of the anti-seepage structure and the trench wall soil, further stabilizing the connection between the membrane material joint component group and the adjacent anti-seepage membrane body, and forming a complete and efficient vertical anti-seepage curtain wall. This curtain wall can effectively resist the strong penetration pressure of groundwater, prevent the spread of pollutants, meet the strict requirements of environmental governance and underground engineering in pollution isolation, groundwater anti-seepage and deep foundation pit support, and greatly improve the anti-seepage performance and stability of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the anti-seepage membrane body and the membrane material positioning seat component assembly of the present invention;

[0027] Figure 3 It is a structural schematic diagram of the membrane material positioning seat component assembly of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the suspension base component assembly and the seat placement clamp component assembly of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the suspension base component assembly of the present invention;

[0030] Figure 6 It is a schematic cross-sectional structure diagram of the suspension base component assembly and the seat clamp component assembly of the present invention when they are installed;

[0031] Figure 7 For the present invention Figure 6 The structural diagram at A in the middle;

[0032] Figure 8 It is a structural schematic diagram of the seat placement clamp component assembly part of the present invention;

[0033] Fig. 9 It is a cross-sectional structural schematic diagram of the seat placement clamp component assembly part of the present invention;

[0034] Fig.10 It is a schematic diagram of the structure of the suspension base component group and the jointer placement component group during installation of the present invention;

[0035] Fig.11 It is a schematic cross-sectional structure diagram of the suspension base component assembly and the jointer placement component assembly of the present invention during installation;

[0036] Fig.12 It is a structural schematic diagram of two adjacent groups of anti-seepage membrane bodies and membrane material positioning seat component groups of the present invention when they are placed in place;

[0037] Fig.13 It is a schematic structural diagram of the membrane material joint component group of the present invention when connecting two groups of anti-seepage membrane bodies;

[0038] Fig.14 It is a schematic cross-sectional structure diagram of the membrane material joint component group of the present invention connecting two groups of anti-seepage membrane bodies;

[0039] Fig.15 For the present invention Fig.14 The structural diagram at B in the middle;

[0040] Fig.16 It is a structural schematic diagram of the membrane material joint component assembly part of the present invention;

[0041] Fig.17 It is a schematic structural diagram of the anti-seepage membrane body and the membrane material positioning seat component assembly in the tank body of the present invention.

[0042] In the figure: 10, anti-seepage membrane body; 20, membrane material positioning seat component group; 21, I-shaped base body; 211, membrane material slot 1; 212, membrane material slot 2; 22, bolt assembly; 23, side convex shell; 231, side slot; 30, hanging base component group; 31, middle frame body; 32, upper hanger; 33, lower mounting plate; 40, seat placement clamp component group; 41, middle shell; 42, upper mounting plate 1; 43, side motor box; 44, reduction motor component; 45, long shaft rod; 46, worm component; 47, worm wheel component; 48. Horizontal axis rod; 49. Screw rod member; 410. External mounting frame; 411. Long clamping claw member; 412. Insert block; 413. Guide frame body; 414. Motor harness member; 50. Jointer placement component group; 51. Triangular shell; 52. Upper mounting plate 2; 53. Mobile plug-in; 54. Electric telescopic rod; 60. Membrane material joint component group; 61. Joint vertical plate; 611. Membrane material side groove 1; 612. Membrane material side groove 2; 613. Joint through groove body; 62. Bottom connecting plate; 63. Center connecting membrane. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] An embodiment provided by the present invention: Figure 1 , Fig.10 , Fig.13 and Fig.17 , a device for ultra-deep seamless connection of membrane under mud conditions, comprising:

[0045] An anti-seepage membrane body 10, wherein the anti-seepage membrane body 10 is provided in multiple groups;

[0046] A membrane material positioning seat component group 20, which is assembled at one end of the anti-seepage membrane body 10 and is used to maintain the vertical posture of the anti-seepage membrane body 10 in the tank mud environment;

[0047] A lifting base component group 30, the top end of which is connected to the winch of the engineering crane through a high-strength steel cable to form a power transmission connection;

[0048] The membrane material joint component group 60, the seat placement clamp component group 40 and the jointer placement component group 50, the seat placement clamp component group 40 and the jointer placement component group 50 are detachably and alternately assembled at the bottom of the hanging base component group 30;

[0049] When the seat placement clamp component group 40 and the base suspension component group 30 are combined, they are used to accurately lower the membrane material positioning seat component group 20 to the bottom of the ultra-deep tank;

[0050] When the jointer placement component group 50 and the base suspension component group 30 are combined, they are used to implement jointing at the side edges of adjacent anti-seepage membrane bodies 10 in a mud environment.

[0051] See also Figure 2-Figure 3 In an optional embodiment: the length of the anti-seepage membrane body 10 can be adjusted and cut according to the depth of the groove body, the membrane material positioning seat component group 20 includes an I-shaped base body 21, and the I-shaped base body 21 is provided with a membrane material groove 1 211 and a membrane material groove 212 corresponding to the anti-seepage membrane body 10, one end of the anti-seepage membrane body 10 is inserted into the membrane material groove 1 211, and the inserted part of the anti-seepage membrane body 10 is fixed in the membrane material groove 1 211 by a bolt assembly 22, side convex shells 23 are installed on both sides of the I-shaped base body 21, and side slots 231 are provided inside the side convex shells 23, the bottom of the I-shaped base body 21 contacts the bottom of the groove body, and the two sides of the I-shaped base body 21 contact the side walls of the groove body.

[0052] It should be noted that the I-shaped cross-section design of the I-shaped base body 21 can achieve two-way contact support on the groove wall, ensure position stability at the groove bottom, and further ensure the vertical stability of the anti-seepage membrane body 10 under the action of mud buoyancy.

[0053] See also Figure 4-Figure 5 In an optional embodiment: the suspension base component group 30 includes a middle frame body 31, the top of the middle frame body 31 is fixedly connected to an upper hanger 32, the bottom of the middle frame body 31 is fixedly connected to a lower mounting plate 33, the upper hanger 32 is connected to one end of a steel cable, and a counterweight block is installed inside the middle frame body 31.

[0054] It should be noted that the middle frame 31 can adapt to the buoyancy balance requirements under different mud densities by adding or removing counterweight modules.

[0055] See also Figure 4-Figure 9 In an optional embodiment: the seat placement clamp component group 40 includes a middle shell 41, the top of the middle shell 41 is fixedly connected to an upper mounting plate 42, the upper mounting plate 42 and the lower mounting plate 33 are detachably connected, a side motor box 43 is installed on the side of the middle shell 41, and a reduction motor component 44 is installed inside the side motor box 43 through a mounting frame, and the working end of the reduction motor component 44 is fixedly connected to a long shaft rod 45, and the long shaft rod 45 is fixedly connected to a worm component 46 through a through hole, and the worm Component 46 is meshed with a worm gear component 47, and the worm gear component 47 is fixedly connected to a transverse axis 48 through a through hole. Both ends of the transverse axis 48 are connected to screw components 49, and the screw component 49 is connected to an external mounting frame 410 through a bearing. The screw component 49 is connected to a long clamping claw component 411 through a nut pair, and the end of the long clamping claw component 411 away from the external mounting frame 410 is fixedly connected to an insert block 412. A motor wiring harness component 414 is installed on the top of the reduction motor component 44, and a guide frame body 413 is installed on the side of the middle shell 41.

[0056] In an optional embodiment: a cavity is provided inside the middle shell 41, the long shaft rod 45 is connected to the side motor box 43 and the middle shell 41 through a bearing, and the worm gear 46, the worm wheel 47 and the cross shaft rod 48 are provided in three groups, and the three groups of worm gear 46, the worm wheel 47 and the cross shaft rod 48 are evenly distributed in the cavity of the middle shell 41.

[0057] In an optional embodiment: both ends of the transverse axis rod 48 are connected to the middle shell 41 through bearings, and a rotating sealing sleeve is also provided outside the bearing connection position, the outer mounting frame 410 is installed on the side of the middle shell 41 by bolts, and the long clamping claws 411 and the plug blocks 412 are provided in two groups, and the two groups of long clamping claws 411 and the plug blocks 412 are symmetrically distributed on both sides of the middle shell 41, and the plug blocks 412 are used to insert into the side slots 231.

[0058] It should be noted that the transmission mechanism of the worm gear 46 and the worm wheel 47 has a self-locking feature, which can prevent the clamping force from retreating due to mud resistance. The rotating sealing sleeve of the horizontal axis rod 48 is made of fluororubber (pressure resistance ≥1.2MPa, temperature resistance -30℃~120℃) to prevent mud particles from invading the interior of the transmission mechanism. The long clamping claw 411 is made of aluminum alloy (tensile strength ≥300MPa) and the surface is anodized.

[0059] In an optional embodiment: the motor harness component 414 is electrically connected between the reduction motor component 44 and an external controller, and the reduction motor component 44 can be controlled by operating the external controller. The guide frame body 413 is provided with two groups, and the two groups of guide frame bodies 413 are symmetrically installed on both sides of the middle shell body 41. A guide wheel is rotatably installed on the guide frame body 413, and the guide wheel is in contact with the side wall of the groove body.

[0060] It should be noted that the motor wiring harness 414 adopts armored waterproof cable (protection level IP68), and the joints are filled with silicone sealing rings, which can work continuously in a mud-immersion environment with a low failure rate.

[0061] See also Figure 10-11 In an optional embodiment: the seamer placement component group 50 includes a triangular shell 51, the top of the triangular shell 51 is fixedly connected to an upper mounting plate 2 52, the upper mounting plate 2 52 and the lower mounting plate 33 are detachably connected, and a mobile plug-in 53 and an electric telescopic rod 54 are arranged inside the triangular shell 51, the mobile plug-in 53 is in sliding contact with the triangular shell 51 through a slide groove, the electric telescopic rod 54 is installed in the triangular shell 51, and the working end of the electric telescopic rod 54 is fixedly connected to the mobile plug-in 53, and the electric telescopic rod 54 is electrically connected to an external controller.

[0062] See also Figure 12-16 In an optional embodiment: the membrane material seam component group 60 includes a seam vertical plate 61, the seam vertical plate 61 is provided with a membrane material side groove 1 611 and a membrane material side groove 2 612, a center connecting membrane 63 is installed inside the seam vertical plate 61 through a groove, seam through groove bodies 613 are opened on both sides of the seam vertical plate 61, and the bottom of the seam vertical plate 61 contacts with a bottom connecting plate 62, and the bottom connecting plate 62 is used to contact the I-shaped base body 21.

[0063] A construction method is implemented based on the above-mentioned ultra-deep seamless connection membrane planting device under mud conditions, which includes the following steps: Step 1: Use a rotary drilling rig or a hydraulic grab bucket to form a groove, and configure mud to maintain the liquid level in the groove; install a laser locator at the groove to calibrate the lowering axis of the anti-seepage membrane body 10; Step 2: Cut the anti-seepage membrane body 10 according to the groove depth, insert one end of it into the membrane material groove 211 of the membrane material positioning seat component group 20, and lock it with the bolt assembly 22; Step 3: Connect the upper mounting plate 42 of the seat placement clamp component group 40 with the lower mounting plate 33 of the suspension base component group 30, and drive the reduction motor component 44 to insert the plug block 412 into the working The side slot 231 of the I-shaped base body 21; the engineering crane lowers the base component group 30 at a constant speed until the I-shaped base body 21 touches the bottom, and reversely drives the reduction motor component 44 to make the plug block 412 withdraw from the side slot 231, so as to complete the positioning of multiple groups of anti-seepage membrane bodies 10 in the groove; Step four: replace the jointer placement component group 50, operate the electric telescopic rod 54 to insert the mobile plug-in 53 into the joint through groove body 613 of the joint vertical plate 61, and lower the membrane material joint component group 60 until the bottom connecting plate 62 contacts the I-shaped base body 21, so as to realize the continuous joint of adjacent anti-seepage membrane bodies 10; Step five: pour cement-bentonite mixed slurry to fill the gap, and complete the construction after inspection and repair.

[0064] Working principle:

[0065] When installing the anti-seepage membrane underground, the anti-seepage membrane body 10 must first be accurately cut according to the depth of the groove that has been opened, and then the assembly work is carried out. The I-shaped base body 21 in the membrane material positioning seat component group 20 is connected to the anti-seepage membrane body 10, and one end of the anti-seepage membrane body 10 is inserted into the membrane material groove 1 211, and fastened with the bolt assembly 22 to ensure a stable connection. Subsequently, the seat placement clamp component group 40 and the suspension base component group 30 are connected, and the specific method is to firmly fix the upper mounting plate 1 42 and the lower mounting plate 33.

[0066] After completing the above steps, the membrane material positioning seat component group 20 is connected to the seat placement clamp component group 40. When the seat placement clamp component group 40 is close to the membrane material positioning seat component group 20, the operator starts the reduction motor component 44 through the external controller. At this time, the reduction motor component 44 is running, driving the long shaft rod 45 to rotate, and then the worm component 46 rotates synchronously. The rotation of the worm component 46 drives the worm wheel component 47 and the horizontal shaft rod 48 to rotate, and finally the screw component 49 starts to rotate. During the rotation of the screw component 49, the long clamping claw component 411 relies on the nut pair to move smoothly on the screw component 49, driving the plug 412 to accurately insert the side slot 231. At this point, the seat placement clamp component group 40 completes the clamping connection of the membrane material positioning seat component group 20.

[0067] Afterwards, fix the end of the anti-seepage membrane body 10 away from the membrane material positioning seat component group 20 at the notch, and the fixing point is located at the center line of the notch. Operate the crane frame to move so that the membrane material positioning seat component group 20 is just below the anti-seepage membrane body 10 fixed at one end of the notch, and then lock the position of the crane frame. Next, control the crane winch to lower the hanging base component group 30. At this time, the hanging base component group 30, the seat placement clamp component group 40 and the membrane material positioning seat component group 20 are slowly lowered into the mud in the tank body. During the continuous lowering process, the guide wheels on the guide frame 413 are in close contact with the side walls of the tank body, playing a guiding role and ensuring the stability of the lowering process. When the membrane material positioning seat component group 20 is lowered to the bottom of the tank body, thanks to the action of the guide frame 413, it can be accurately located at the center line of the bottom of the tank, thereby ensuring that the anti-seepage membrane body 10 is in a vertical state. Subsequently, the seat placement clamp component group 40 is driven in reverse to release the clamping of the membrane material positioning seat component group 20, allowing the membrane material positioning seat component group 20 to remain at the bottom of the groove to stabilize the position of the anti-seepage membrane body 10, and finally the winch is controlled to retract the base component group 30 and the seat placement clamp component group 40, thus completing the placement operation of a group of anti-seepage membrane bodies 10.

[0068] After the base assembly 30 and the seat clamp assembly 40 are retracted, the placement position of the next group of anti-seepage membrane bodies 10 is measured. One end of the next group of anti-seepage membrane bodies 10 is connected to the membrane material positioning seat assembly 20, and the other end is fixed at the set placement position. In the same way as above, this group of anti-seepage membrane bodies 10 is continued to be lowered. After the lowering is completed, the membrane material positioning seat assembly 20 is left at the bottom of the tank again, and the base assembly 30 and the seat clamp assembly 40 are retracted. According to this step, the operation is circulated in the tank until all the required anti-seepage membrane bodies 10 are placed in place.

[0069] At this point, the placement of multiple groups of anti-seepage membrane bodies 10 is completed. Next, the connection process of adjacent anti-seepage membrane bodies 10 is carried out. First, the bottom connecting plate 62 is connected between the edges of adjacent anti-seepage membrane bodies 10. The specific operation is to insert the edge position of the membrane material into the groove of the bottom connecting plate 62, and the bottom connecting plate 62 slowly falls into the groove body by its own gravity. Then, the membrane material joint component group 60 is connected between the two adjacent groups of anti-seepage membrane bodies 10 at the notch position. The specific connection method is to insert the edge positions of the two groups of anti-seepage membrane bodies 10 into the membrane material side groove 1 611 and the membrane material side groove 2 612 respectively. Afterwards, the seat placement clamp component group 40 is disassembled from the bottom of the hanging base component group 30, and the jointer placement component group 50 is installed with the hanging base component group 30. By controlling the electric telescopic rod 54, the movable plug-in 53 can be telescopically moved in the triangular shell 51. After the control moving plug-in 53 extends, the membrane material joint component group 60 is closely attached to the side of the jointer placement component group 50, and the extended mobile plug-in 53 is inserted into the joint through groove body 613. By controlling the base suspension component group 30 and the jointer placement component group 50 to move downward, the membrane material joint component group 60 is driven to be lowered along the edge position of the adjacent anti-seepage membrane body 10. In this process, the membrane material side groove 1 611 and the membrane material side groove 2 612 are in sliding contact with the edge of the membrane material. When the joint vertical plate 61 is lowered, it will move downward together against the bottom connecting plate 62. When moving to the bottom, the bottom connecting plate 62 will directly contact the I-shaped base body 21 through the groove. Under the action of the mud pressure in the groove, the mud will apply a force to the two groups of anti-seepage membrane body 10 edges located in the membrane material side groove 1 611 and the membrane material side groove 2 612 through the joint through groove body 613, squeezing them toward the direction of the center connection membrane 63, so as to make the two fit closely. By repeatedly controlling the base assembly 30 and the jointer placement assembly 50 to lower multiple sets of joint risers 61, adjacent impermeable membranes 10 can be gradually connected from bottom to top. Since the edges of the two sets of impermeable membranes 10 are in close contact with the central connection membrane 63, a sealed joint is formed.

[0070] After all subsequent connection work is completed, cement-bentonite slurry (ratio 1:4-1:6) is poured into the mud. The cement-bentonite slurry gradually solidifies in the mud environment. On the one hand, it fills the gap between the membrane material and the groove wall, enhancing the integrity of the anti-seepage structure and the groove wall soil; on the other hand, it further stabilizes the connection between the membrane material joint component group 60 and the adjacent anti-seepage membrane body 10, making the entire anti-seepage system more solid. Since the membrane material positioning seat component group 20 ensures the verticality and stability of each section of the anti-seepage membrane body 10 in the groove, the membrane material joint component group 60 realizes the seamless connection of the adjacent anti-seepage membrane body 10 from the bottom of the groove to the groove mouth, and combined with the filling and curing effect of the cement-bentonite slurry, a complete and efficient vertical anti-seepage curtain wall is finally formed. The curtain wall can effectively resist the strong penetration pressure of groundwater, prevent the spread of pollutants, meet the strict requirements of environmental governance and underground engineering in pollution isolation, groundwater anti-seepage and deep foundation pit support, and greatly improve the anti-seepage performance and stability of the project. Compared with traditional construction technology, it significantly improves project quality and long-term reliability, and effectively ensures the safety and sustainable operation of underground projects.

[0071] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A device for ultra-deep seamless connection of membrane under mud conditions, characterized in that: include: An anti-seepage membrane body (10), wherein the anti-seepage membrane body (10) is provided in a plurality of groups; A membrane material positioning seat component group (20), the membrane material positioning seat component group (20) being assembled at one end of the anti-seepage membrane body (10) and used for maintaining the vertical posture of the anti-seepage membrane body (10) in a tank mud environment; A lifting base component group (30), wherein the top end of the lifting base component group (30) is connected to a winch of an engineering crane through a high-strength steel cable to form a power transmission connection; A membrane material joint component group (60), a seat placement clamp component group (40) and a jointer placement component group (50), wherein the seat placement clamp component group (40) and the jointer placement component group (50) are alternately assembled at the bottom of the hanging base component group (30) in a detachable manner; When the seat placement clamp component group (40) and the base suspension component group (30) are combined, they are used to accurately lower the membrane material positioning seat component group (20) to the bottom of the ultra-deep tank body; When the jointer placement component group (50) and the base suspension component group (30) are combined, they are used to implement jointing at the side edges of adjacent anti-seepage membrane bodies (10) in a mud environment; The seam joint placement component group (50) comprises a triangular shell (51), the top of the triangular shell (51) is fixedly connected to an upper mounting plate (52), the upper mounting plate (52) and the lower mounting plate (33) are detachably connected, a movable plug-in (53) and an electric telescopic rod (54) are arranged inside the triangular shell (51), the movable plug-in (53) is in sliding contact with the triangular shell (51) through a slide groove, the electric telescopic rod (54) is installed in the triangular shell (51), and the working end of the electric telescopic rod (54) is fixedly connected to the movable plug-in (53), and the electric telescopic rod (54) is electrically connected to an external controller; The membrane material joint component group (60) comprises a joint vertical plate (61), the joint vertical plate (61) being provided with a first membrane material side groove (611) and a second membrane material side groove (612), a central connecting membrane (63) being installed inside the joint vertical plate (61) via a groove, joint through groove bodies (613) being provided on both sides of the joint vertical plate (61), the bottom of the joint vertical plate (61) being in contact with a bottom connecting plate (62), and the bottom connecting plate (62) being used to contact an I-shaped base body (21).

2. The device for ultra-deep seamless connection of membrane under mud conditions according to claim 1 is characterized in that: The length of the anti-seepage membrane body (10) is adjusted and cut according to the depth of the groove body. The membrane material positioning seat component group (20) comprises an I-shaped base body (21). The I-shaped base body (21) is provided with a membrane material groove 1 (211) and a membrane material groove 2 (212) corresponding to the anti-seepage membrane body (10). One end of the anti-seepage membrane body (10) is inserted into the membrane material groove 1 (211), and the inserted part of the anti-seepage membrane body (10) is fixed in the membrane material groove 1 (211) by a bolt assembly (22). Side convex shells (23) are installed on both sides of the I-shaped base body (21). Side slots (231) are provided inside the side convex shells (23). The bottom of the I-shaped base body (21) contacts the bottom of the groove body, and the two sides of the I-shaped base body (21) contact the side walls of the groove body.

3. The device for ultra-deep seamless connection of membrane under mud conditions according to claim 1 is characterized in that: The suspension base component group (30) comprises a middle frame (31), the top of the middle frame (31) is fixedly connected to an upper hanger (32), the bottom of the middle frame (31) is fixedly connected to a lower mounting plate (33), the upper hanger (32) is connected to one end of a steel cable, and a counterweight is installed inside the middle frame (31).

4. The device for ultra-deep seamless connection of membrane under mud conditions according to claim 1 is characterized in that: The seat placement clamp component group (40) comprises a middle shell (41), the top of the middle shell (41) is fixedly connected to an upper mounting plate (42), the upper mounting plate (42) and the lower mounting plate (33) are detachably connected, a side motor box (43) is installed on the side of the middle shell (41), a reduction motor component (44) is installed inside the side motor box (43) via a mounting frame, a long shaft rod (45) is fixedly connected to the working end of the reduction motor component (44), the long shaft rod (45) is fixedly connected to a worm component (46) via a through hole, and the worm component (46) is meshed with a worm. The worm wheel component (47) is fixedly connected to a transverse axis (48) through a through hole, the two ends of the transverse axis (48) are connected to a screw component (49), the screw component (49) is connected to an external mounting frame (410) through a bearing, the screw component (49) is connected to a long clamping claw component (411) through a nut pair, and one end of the long clamping claw component (411) away from the external mounting frame (410) is fixedly connected to an insert block (412), a motor harness component (414) is installed on the top of the reduction motor component (44), and a guide frame body (413) is installed on the side of the middle shell (41).

5. The device for ultra-deep seamless connection of membrane under mud conditions according to claim 4 is characterized in that: A cavity is provided inside the middle housing (41); the long shaft rod (45) is connected to the side motor box (43) and the middle housing (41) via a bearing; three groups of the worm member (46), the worm wheel member (47) and the cross shaft rod (48) are provided, and the three groups of the worm member (46), the worm wheel member (47) and the cross shaft rod (48) are evenly distributed in the cavity of the middle housing (41).

6. The device for ultra-deep seamless connection of membrane under mud conditions according to claim 5 is characterized in that: Both ends of the transverse axis rod (48) are connected to the middle housing (41) via bearings, and a rotating sealing sleeve is also provided outside the bearing connection position. The outer mounting frame (410) is installed on the side of the middle housing (41) via bolts. Two groups of long clamping claws (411) and insert blocks (412) are provided, and the two groups of long clamping claws (411) and insert blocks (412) are symmetrically distributed on both sides of the middle housing (41). The insert blocks (412) are used to be inserted into the side slots (231).

7. The device for ultra-deep seamless connection of membrane under mud conditions according to claim 6 is characterized in that: The motor harness component (414) is electrically connected between the reduction motor component (44) and an external controller, and the reduction motor component (44) is controlled by operating the external controller. The guide frame body (413) is provided with two groups, and the two groups of guide frame bodies (413) are symmetrically installed on both sides of the middle shell body (41). The guide frame body (413) is rotatably mounted with a guide wheel, and the guide wheel is in contact with the side wall of the slot body.

8. A construction method, based on the device for ultra-deep seamless connection of membrane under mud conditions as described in any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Use a rotary drilling rig or a hydraulic grab bucket to form a trench, add mud to maintain the liquid level in the trench; install a laser locator at the trench mouth to calibrate the lowering axis of the anti-seepage membrane body (10); Step 2: cutting the anti-seepage membrane body (10) according to the groove depth, inserting one end of the anti-seepage membrane body (10) into the membrane material groove 1 (211) of the membrane material positioning seat component assembly (20), and locking it with a bolt assembly (22); Step 3: Connect the upper mounting plate 1 (42) of the seat clamp component group (40) to the lower mounting plate (33) of the suspension base component group (30), drive the reduction motor component (44) to insert the plug (412) into the side slot (231) of the I-shaped base body (21); lower the suspension base component group (30) at a constant speed with an engineering crane until the I-shaped base body (21) touches the bottom, and reversely drive the reduction motor component (44) to make the plug (412) exit the side slot (231), thereby completing the positioning of the plurality of anti-seepage membranes (10) in the groove; Step 4: Replace the jointer placement component assembly (50), operate the electric telescopic rod (54) to insert the movable plug-in (53) into the joint groove body (613) of the joint vertical plate (61), and lower the membrane material joint component assembly (60) until the bottom joint plate (62) contacts the I-shaped base body (21), so as to realize continuous joints of adjacent anti-seepage membrane bodies (10); Step 5: Pour cement-bentonite mixed slurry to fill the gap, and complete the construction after inspection and repair.

Images