I-shaped rigid sealed connection device for vertical flexible anti-seepage wall

Abstract

The present invention provides a sealed connection device for a vertical flexible anti-seepage wall, used for seamlessly and tightly connecting two adjacent flexible membranes within a groove. The device comprises an I-shaped support joint, two rectangular female buckles, and a male buckle. The I-shaped support joint is made of I-shaped steel, with a height consistent with the groove depth and a web length consistent with the groove width. The two rectangular female buckles are symmetrically fixed at two angles between a side flange of the I-shaped support joint and the web. The two rectangular female buckles each have a reserved through-slit arranged along the groove depth on opposite sides. The male buckle has a triangular head end and a connecting piece extending from the wider side of the head end. The connecting piece is capable of connecting to the flexible membrane, and the head end is embedded in the interior of the rectangular female buckle to form a nested and fixed structure. The present invention integrates the joint structure and the sealed structure into one, which not only facilitates construction and prevents conflicts, but also improves construction speed and anti-seepage effectiveness.

Description

Technical Field

[0001] The invention relates to an I-shaped rigid closed connection device of a vertical flexible anti-seepage wall and relates to the field of environmental treatment of polluted sites. Background Art

[0002] At present, barrier technology has become a major engineering control measure for risk management of contaminated sites. Barrier technology includes two categories: horizontal barrier and vertical barrier.

[0003] Vertical barrier technology primarily utilizes underground barriers to seal pollutants or redirect groundwater flow to control their horizontal migration. Vertical barrier walls must exhibit good continuity and durability, and the barrier materials must possess high stability and corrosion resistance. Currently, key technologies include soil-bentonite isolation walls, high-pressure jet grouting walls, mixing pile walls, jet-injected pile walls, cement curtain grouting walls, vertical flexible anti-seepage walls, and permeable reactive walls.

[0004] Vertical flexible anti-seepage walls are widely used due to their excellent anti-seepage performance, high corrosion resistance, strong deformation resistance, and long service life. Vertical flexible anti-seepage walls use flexible membranes as the primary barrier material. Vertical slots are used to insert the membranes vertically into a relatively impermeable layer. Connecting locks and built-in water-stopping materials interlock the multiple flexible membranes, while grouting sealants provide water-stopping consolidation at the membrane base. The seamless, airtight connection between the flexible membrane sheets is a key component of the vertical flexible anti-seepage wall system, and the inter-sheet connection structure is the core technology of the vertical flexible anti-seepage wall.

[0005] The vertical flexible anti-seepage wall trenching is constructed using a section-by-section method. Support joints are installed at the junctions of each section to ensure better interlocking between adjacent trenches. Furthermore, the vertical flexible anti-seepage wall also requires connecting locks at the junctions of each flexible membrane to connect the two adjacent flexible membranes. Installing these connecting locks and support joints at the same junction can lead to conflicting installation positions.

[0006] The traditional vertical flexible anti-seepage wall connecting lock is a flexible structure. During the construction process of lowering it in the groove, since the width of the groove is much larger than the thickness of the connecting lock, the connecting lock has a large space for movement in the groove, so it is easy to deviate from the direction, increasing the difficulty of nesting between the mother buckle and the child buckle. Summary of the Invention

[0007] The purpose of the present invention is to provide an I-shaped rigid closed connection device for a vertical flexible anti-seepage wall, which integrates the support joint and the connecting lock buckle, so as to realize the closed connection of the flexible membranes of adjacent trough bodies, set the support joint at the trough end, and ensure the smooth nesting between the mother buckle and the child buckle.

[0008] To achieve the above object, the technical solution adopted by the present invention is:

[0009] A sealed connection device for a vertical flexible anti-seepage wall, used for seamless and sealed connection of two adjacent flexible membranes in a groove, characterized in that the sealed connection device comprises an I-shaped support joint, two rectangular female buckles and a male buckle, wherein:

[0010] The I-shaped support joint is an I-shaped steel, the height of which is consistent with the groove depth, and the length of the web is consistent with the groove width;

[0011] The two rectangular box buckles are symmetrically fixed at two angles between the flange of one side of the I-shaped support joint and the web. The two rectangular box buckles each have a reserved through-slit arranged along the groove depth on opposite sides; the height of the rectangular box buckle and its reserved through-slit is consistent with the groove depth;

[0012] The sub-buckle has a head end wider than the reserved through-slit and a connecting piece extending from one side of the head end. The height of the head end and the connecting piece is consistent with the groove depth. The connecting piece can be connected to the flexible membrane, and the connecting piece can be embedded in the reserved through-slit of the rectangular female buckle along the groove depth direction, so that the head end is embedded in the interior of the rectangular female buckle to form a nested fixation.

[0013] The closed connection device for the vertical flexible anti-seepage wall, wherein: anti-corrosion and anti-seepage material is injected into the gap formed between the rectangular female buckle and the male buckle.

[0014] The closed connection device of the vertical flexible anti-seepage wall, wherein: the connecting piece of the buckle is made of the same material as the flexible membrane, and is integrated with the flexible membrane by hot-melt welding.

[0015] The airtight connection device of the vertical flexible anti-seepage wall, wherein: the length of the flange is 63-180 mm, and the thickness is 4.5-17 mm.

[0016] The airtight connection device for the vertical flexible anti-seepage wall, wherein: the material of the rectangular female buckle is consistent with that of the I-shaped support joint.

[0017] The airtight connection device for the vertical flexible anti-seepage wall, wherein: the length of the rectangular female buckle is 30-70 mm, and the width is 30-60 mm.

[0018] The airtight connection device of the vertical flexible anti-seepage wall, wherein: the width of the reserved through-slit is 6-10mm.

[0019] The airtight connection device for the vertical flexible anti-seepage wall, wherein: the width of the wider side of the head end of the buckle is 15mm-30mm.

[0020] The airtight connection device of the vertical flexible anti-seepage wall, wherein: the overlap width of the weld between the buckle and the flexible membrane is 55-65mm.

[0021] The airtight connection device for the vertical flexible anti-seepage wall, wherein: the head end is triangular, and the connecting piece extends from the wider side of the triangle.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention combines the I-shaped support joint with the rectangular female buckle into one, solving the problem of position conflict between the support joint and the connecting lock buckle.

[0024] 2. The present invention adopts an I-shaped steel connection lock, which has a stable structure, enhances the bending resistance, shear resistance and stress transfer capacity of the connection in the longitudinal and transverse directions, and strengthens the stability of the connection of the anti-seepage wall.

[0025] 3. The present invention adopts an I-shaped support joint. The flange of the I-shaped support joint has a large contact area with the groove wall, which strengthens the support effect on the groove end and prevents the groove end from collapsing.

[0026] 4. The present invention welds the rectangular female buckle to the I-shaped support joint to provide a fixed direction and limited space channel for the tapered sub-buckle, thereby preventing the tapered sub-buckle from deviating during the lowering of the trough body and making nesting difficult. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the cross-sectional shape of the I-shaped support joint;

[0028] Figure 2 It is a schematic diagram of the overall structure of the I-shaped rigid sealed connection device of the vertical flexible anti-seepage wall provided by the present invention.

[0029] Explanation of the reference numerals: I-shaped support joint 1; web 11; flange 12; rectangular female buckle 2; reserved through seam 3; tapered sub-buckle 4; flexible membrane 5; gap 6. DETAILED DESCRIPTION

[0030] like Figure 1 、 Figure 2 As shown, the present invention provides a sealed connection device for a vertical flexible anti-seepage wall, which is used for seamless and sealed connection of two adjacent flexible membranes in a groove. The sealed connection device includes an I-shaped support joint 1, two rectangular female buckles 2 and a tapered male buckle 4, wherein:

[0031] The I-shaped support joint 1 is an I-shaped steel, the height of which is consistent with the groove depth, the length of the web 11 is consistent with the groove width, the length of the flange 12 is 63-180 mm, and the thickness is 4.5-17 mm;

[0032] The two rectangular box buckles 2 are symmetrically welded and fixed at two angles between the flange 12 of one side of the I-shaped support joint 1 and the web 11. The two rectangular box buckles 2 each have a reserved through-slit 3 arranged along the groove depth direction on the opposite side; the height of the rectangular box buckle 2 and the reserved through-slit 3 is consistent with the groove depth;

[0033] The conical sub-buckle 4 has a triangular head end and a connecting piece extending from the wider side of the head end. The height of the head end and the connecting piece is consistent with the groove depth. The connecting piece is connected to the flexible membrane as a whole, and the connecting piece can be embedded in the reserved through-slit 3 of the rectangular female buckle 2 along the groove depth direction, so that the head end is embedded in the interior of the rectangular female buckle 2 to form a nested fixation; thereafter, by injecting anti-corrosion and anti-seepage material into the gap 6 formed between the rectangular female buckle 2 and the conical sub-buckle 4, the seamless and sealed connection of the two flexible membranes in the groove can be completed.

[0034] Specifically, the integral structure formed by the I-shaped support joint 1 and the two rectangular female buckles 2 is placed vertically into the groove, and the two flanges 12 of the I-shaped support joint 1 are close to the two side walls of the groove; the material of the conical sub-buckle 4 is the same as that of the flexible membrane 5 (HDPE material), and is welded to the flexible membrane 5 by hot melt; the conical sub-buckle 4 is aligned with the rectangular female buckle 2, and inserted into the rectangular female buckle 2 vertically through the reserved through-slit 3 to form a nested structure; thereafter, anti-corrosion and anti-seepage material is injected into the gap 6 formed between the rectangular female buckle 2 and the conical sub-buckle 4 to complete the seamless and sealed connection of the two flexible membranes in the groove.

[0035] Since the present invention welds the rectangular female buckle 2 and the I-shaped support joint 1 into one, it can provide a fixed direction and a limited space channel for the downward insertion of the tapered sub-buckle 4, preventing the tapered sub-buckle 4 from directional deviation during the lowering process, thereby ensuring the smooth nesting of the rectangular female buckle 2 and the tapered sub-buckle 4.

[0036] In a preferred embodiment, the present invention can adopt the following preferred technical solutions:

[0037] The rectangular female buckle 2 is made of the same material as the I-shaped support joint 1, with a length of 30-70 mm, a width of 30-60 mm, and a height consistent with the groove depth;

[0038] The width of the reserved through seam 3 is 6-10 mm.

[0039] The width of the wider side of the head end of the conical sub-button 4 is 15mm-30mm, which is greater than the width of the reserved through-slit 3, so as to ensure that the conical sub-button 4 can form a nested structure with the rectangular female buckle 2 through the reserved through-slit 3.

[0040] The flexible membrane 5 is preferably made of HDPE, has a thickness of 3 mm, and a height consistent with the groove depth.

[0041] The conical buckle 4 is connected to one side of the flexible membrane 5 by hot-melt welding, and the overlap width of the weld is 55-65 mm.

[0042] A certain gap 6 is left between the rectangular female buckle 2 and the tapered sub-buckle 4, which can be used to fine-tune the lowering process of the tapered sub-buckle 4 in the early stage, and can be used to introduce a catheter to inject anti-corrosion and anti-seepage materials to form a closed overall structure in the later stage.

[0043] In summary, the I-shaped rigid sealed connecting lock buckle of the vertical flexible anti-seepage wall provided by the present invention adopts an integrated structure of an I-shaped support joint and a rectangular female buckle, which is convenient for the construction of the lower membrane in the groove and prevents the conflict between the support joint and the connecting lock buckle, and adds a rigid element to the flexible anti-seepage wall, thereby improving the stress transferability and stability of the connection of the traditional vertical flexible anti-seepage wall.

Claims

1. A sealed connection device for a vertical flexible anti-seepage wall, used for seamlessly and tightly connecting two adjacent flexible membranes in a groove, characterized by: The sealed connection device includes an I-shaped support joint, two rectangular female buckles and a male buckle, wherein: The I-shaped support joint is an I-shaped steel, the height of which is consistent with the groove depth, and the length of the web is consistent with the groove width; The two rectangular box buckles are symmetrically fixed at two angles between the flange of one side of the I-shaped support joint and the web. The two rectangular box buckles each have a reserved through-slit arranged along the groove depth on opposite sides; the height of the rectangular box buckle and its reserved through-slit is consistent with the groove depth; The sub-buckle has a head end wider than the reserved through-slit and a connecting piece extending from one side of the head end. The height of the head end and the connecting piece is consistent with the groove depth. The connecting piece of the sub-buckle is made of the same material as the flexible membrane and is welded to the flexible membrane through hot melt. Moreover, the connecting piece can be embedded in the reserved through-slit of the rectangular female buckle along the groove depth direction, so that the head end is embedded in the interior of the rectangular female buckle to form a nested fixation, and anti-corrosion and anti-seepage material is injected into the gap formed between the rectangular female buckle and the sub-buckle.

2. The airtight connection device for a vertical flexible anti-seepage wall according to claim 1, characterized in that: The flange has a length of 63-180 mm and a thickness of 4.5-17 mm.

3. The airtight connection device for a vertical flexible anti-seepage wall according to claim 1, characterized in that: The material of the rectangular female buckle is consistent with that of the I-shaped support joint.

4. The airtight connection device for a vertical flexible anti-seepage wall according to claim 3, characterized in that: The rectangular female buckle has a length of 30-70 mm and a width of 30-60 mm.

5. The airtight connection device for a vertical flexible anti-seepage wall according to claim 1, characterized in that: The width of the reserved through seam is 6-10 mm.

6. The airtight connection device for a vertical flexible anti-seepage wall according to claim 5, characterized in that: The width of the wider side of the head end of the buckle is 15mm-30mm.

7. The airtight connection device for a vertical flexible anti-seepage wall according to claim 2, characterized in that: The overlap width of the weld between the buckle and the flexible membrane is 55-65 mm.

8. The airtight connection device for a vertical flexible anti-seepage wall according to claim 1, characterized in that: The head end is triangular in shape, and the connecting piece extends from a wider side of the triangle.

Images