A construction method of a slotted and film-planting integrated anti-seepage composite curtain wall

Abstract

The application is a construction method of a slotted and membrane-embedded anti-seepage composite curtain wall; the method comprises the following steps: processing a joint box (1) by using vibration or pre-drilling process, the embedding depth of the joint box (1) is greater than the laying depth of the membrane; erecting and starting a slotted and membrane-embedded integrated equipment (2), so that the equipment cuts the soil downwards along the joint box (1), thereby forming a slot and embedding the anti-seepage membrane into the ground along with the joint box (1) until reaching the designed depth; when reaching the designed depth, a rope saw (8) is withdrawn from the ground. The construction method of the anti-seepage composite curtain wall adopts the slotted and membrane-embedded integrated equipment, thereby one-time and synchronous completing the two processes of slotting and membrane embedding, and the slotting width can be narrowed to 30mm-50mm, the slot section mud solidification adopts in-situ mud solidification agent, and the mud discharge amount is greatly reduced; the formed ultra-thin anti-seepage curtain wall has a permeability coefficient less than 1*10 ‑8 cm / s, and has superior anti-seepage performance.

Description

Technical Field

[0001] This invention relates to the field of construction technology for underground building structures, specifically a method for constructing an integrated anti-seepage composite curtain wall with grooving and membrane planting. Background Technology

[0002] High-density polyethylene membranes, sodium bentonite waterproofing blankets, and other membrane materials are vertically implanted underground as seepage-proof structures to block groundwater or pollutants. In recent years, this technology has been applied in construction engineering and contaminated soil remediation, achieving some success. The current main construction method involves using machinery to create trenches on the ground, implanting the membrane materials within the trenches, and continuously sealing them to form a barrier. Due to the extremely low permeability of the membrane materials, they provide excellent seepage prevention. However, the application of this membrane planting technology is not yet fully realized, mainly due to the following reasons: 1. The traditional trenching and membrane planting process mainly includes trenching, slurry wall preparation, and frame deployment. Trenching and membrane planting are two independent processes, requiring separate equipment for each, resulting in low overall efficiency (< 50 m² / d). The construction depth is generally only about 20 m; increasing the construction depth further reduces efficiency.

[0003] 2. When using a trenching machine to cut trenches for membrane planting, a guide wall needs to be constructed first, and the trenching machine can only be used for construction after the guide wall has been properly cured. The trench width is generally greater than 600mm. After the membrane is placed, a large amount of mud in the trench needs to be replaced or solidified. This method is not economical, has complicated procedures, and the mud causes environmental pollution.

[0004] 3. Various geomembranes are generally flexible materials. When placed in a mud-filled trench, they are affected by external forces such as mud buoyancy and trench wall resistance. Not only is it difficult to control the verticality, but it also affects the anti-seepage effect after the membrane is planted.

[0005] 4. Connecting the membranes to each other in the mud tank is difficult, which is a crucial factor limiting the development of the process: using methods such as connecting and locking, the membranes often get stuck midway due to the mud and verticality. Grouting type locking cannot guarantee the sealing effect due to the limited cavity. Summary of the Invention

[0006] The purpose of this invention is to overcome the above-mentioned defects and propose a method for constructing a waterproof composite curtain wall that integrates grooving and membrane planting. This method uses a grooving and membrane planting machine to complete both grooving and membrane planting processes in one go. Compared with traditional processes, the amount of mud discharged during the process is greatly reduced, and the resulting ultra-thin waterproof curtain wall has superior anti-seepage performance, significantly improved construction efficiency, and can achieve a construction depth of over 20m.

[0007] To achieve the above objectives, the present invention is implemented as follows: a method for constructing a waterproof composite curtain wall with integrated grooving and membrane planting, comprising the following steps: Step 1: fabricating joint boxes 1 using vibration or pre-drilling technology, with each joint box 1 used in pairs, the construction spacing between the two joint boxes 1 in each pair being consistent with the width of the membrane, and the implantation depth of the joint box 1 being greater than the laying depth of the membrane; Step 2: setting up the integrated grooving and membrane planting equipment 2; Step 3: starting the integrated grooving and membrane planting equipment 2, causing it to cut downwards along the joint box 1 to form a groove and simultaneously sending the waterproof membrane into the ground along with the joint box 1 until the designed depth is reached; Step 4: after the integrated grooving and membrane planting equipment 2 has implanted the waterproof membrane into the soil to the designed depth... The wire saw 8 is retracted from the ground. The integrated grooving and film planting equipment 2 cuts the soil using the reciprocating wire saw 8. The wire saw 8 is driven by two power systems and winches 5 to achieve lateral reciprocating motion and up-and-down movement. When the wire saw 8 reaches the designed depth, one power system drives the winch 5 to disengage, while the other power system drives the winch 5 to pull the wire saw 8 back from the ground, achieving the purpose of retrieval. The integrated grooving and film planting equipment 2 places the geomembrane on the film spreading roller 7. The geomembrane moves up and down synchronously with the up-and-down movement of the wire saw 8. That is, the power system drives the winch 5 to synchronously drive the film spreading roller 7 to unfold the geomembrane and follow the wire saw 8 in a synchronous motion.

[0008] The construction method of the anti-seepage composite curtain wall with integrated grooving and membrane planting is described above. The joint box 1 is a prefabricated steel structure or concrete rectangular component. A middle partition 11 is built into the joint box 1, thereby dividing the joint box into two independent boxes of equal width. Thus, a single joint box 1 is responsible for the jointing work of the two anti-seepage membranes on both sides.

[0009] The construction method of the anti-seepage composite curtain wall with integrated grooving and membrane planting includes an integrated grooving and membrane planting device 2 comprising two column guide rods 3. The two column guide rods 3 are aligned with the guide grooves 6 in the joint box 1. A wire saw 8 extends from the end of one column guide rod 3, passes through the guide groove 6 on the same side, and enters the guide groove 6 on the opposite side. After the two ends of the wire saw 8 emerge from the ground, they are connected to two power system driven winches 5 and driven by the two power systems driven winches 5. Through the forward and reverse rotation of the power system driven winches 5, the wire saw 8 is driven to move back and forth in the soil, thereby achieving the purpose of cutting the soil, destroying the soil structure, and turning it into soil debris.

[0010] The construction method of the anti-seepage composite curtain wall with integrated grooving and membrane planting is characterized by: wrapping the anti-seepage membrane 4 on the membrane spreading roller 7, and fixing the end of the anti-seepage membrane 4 to the wire saw 8 by adding a membrane sheet 12.

[0011] The construction method of the anti-seepage composite curtain wall integrating grooving and membrane planting is as follows: during the process of the wire saw 8 cutting the soil, the grooving and membrane planting integrated equipment 2 synchronously controls the column guide rod 3 to move downward, driving the wire saw 8 to move deeper into the stratum. Among them, the winch controls the horizontal reciprocating motion of the wire saw, but cannot control the vertical downward movement. That is, if the column guide rod is not extended downward, the wire saw can only reciprocate at the same depth. Therefore, the column guide rod controls the vertical movement, and the winch controls the horizontal movement of the wire saw. Furthermore, the column guide rod maintains a uniform downward movement according to the difficulty of the wire saw cutting the soil, and is extended when the length is insufficient. This also includes pulleys 9.

[0012] The construction method of the anti-seepage composite curtain wall with integrated grooving and membrane planting is described above. Both sides of the column guide rod 3 have built-in mud circulation holes 10. During the process of the wire saw 8 cutting the soil and lowering it, the mud circulation hole 10 on one side sprays mud in a positive circulation mode. The sprayed mud pushes the soil cut by the wire saw 8 to the mud circulation hole 10 on the other side, which uses a reverse circulation suction method. In this way, a mud circulation system is formed in the trench section. The mud has the function of maintaining the stability of the trench section and carrying soil debris out of the trench section.

[0013] The above-mentioned method for constructing a waterproof composite curtain wall by simultaneously excavating and planting the membrane involves pumping a slurry curing agent into the slurry circulation hole 10 while continuously raising the column guide rod 3. After the slurry in the trench section is mixed with the curing agent, it gradually solidifies to form a waterproof composite curtain wall.

[0014] The proposed method for constructing a waterproof composite curtain wall with integrated grooving and membrane planting utilizes integrated grooving and membrane planting equipment. This allows for the simultaneous completion of both processes in one operation, and the grooving width can be reduced to 30mm-50mm. In-situ slurry curing agents are used for slurry solidification in the grooving sections, significantly reducing slurry discharge. The resulting ultra-thin waterproof curtain wall exhibits a permeability coefficient of less than 1*10-8 cm / s, demonstrating superior impermeability.

[0015] Furthermore, the anti-seepage composite curtain wall proposed in this invention has significantly improved construction efficiency, with a membrane planting speed exceeding 350 m² / d and a construction depth greater than 30 m. This construction method can be used in fields such as underground pollutant barrier walls, dam anti-seepage core walls, and foundation pit water-stop curtains. It does not rely on high-energy-consuming curing agents and materials such as cement, making it a low-carbon and environmentally friendly construction method with high economic and social benefits. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the integrated grooving and film planting equipment mentioned in this invention.

[0017] Figure 2 This is a partial enlarged view of the integrated grooving and film-planting equipment mentioned in this invention.

[0018] Figure 3 This is a partial top view of the integrated grooving and film-planting equipment mentioned in this invention. Detailed Implementation

[0019] The present invention will be further illustrated below through specific embodiments.

[0020] like Figures 1-3 As shown, a method for constructing a waterproof composite curtain wall with integrated grooving and membrane planting includes the following steps: Step 1: Processing joint boxes 1 using vibration or pre-drilling technology. Joint boxes 1 are used in pairs, with the construction spacing between the two joint boxes 1 in each pair being the same as the width of the membrane. The implantation depth of the joint box 1 is greater than the laying depth of the membrane. Step 2: Setting up the integrated grooving and membrane planting equipment 2. Step 3: Starting the integrated grooving and membrane planting equipment 2, which cuts the soil downwards along the joint box 1 to form a groove and simultaneously sends the waterproof membrane into the ground along with the joint box 1 until the designed depth is reached. Step 4: After the integrated grooving and membrane planting equipment 2 has implanted the waterproof membrane into the soil to the designed depth, the wire saw 8 is withdrawn from the ground. The grooving and film planting integrated equipment 2 cuts the soil using a reciprocating wire saw 8. The wire saw 8 is driven by two power systems and winches 5 to achieve lateral reciprocating motion and up-and-down movement. When the wire saw 8 reaches the designed depth, one power system drives the winch 5 to disengage, while the other power system drives the winch 5 to pull the wire saw 8 back from the ground, achieving the purpose of retrieval. The geomembrane of the grooving and film planting integrated equipment 2 is set on the film spreading roller 7. The geomembrane moves up and down synchronously with the up-and-down movement of the wire saw 8. That is, the power system drives the winch 5 to synchronously drive the film spreading roller 7 to unfold the geomembrane and follow the wire saw 8 in a synchronous motion.

[0021] The construction method of the anti-seepage composite curtain wall with integrated grooving and membrane planting is described above. The joint box 1 is a prefabricated steel structure or concrete rectangular component. A middle partition 11 is built into the joint box 1, thereby dividing the joint box into two independent boxes of equal width. Thus, a single joint box 1 is responsible for the jointing work of the two anti-seepage membranes on both sides.

[0022] The construction method of the anti-seepage composite curtain wall with integrated grooving and membrane planting includes an integrated grooving and membrane planting device 2 comprising two column guide rods 3. The two column guide rods 3 are aligned with the guide grooves 6 in the joint box 1. A wire saw 8 extends from the end of one column guide rod 3, passes through the guide groove 6 on the same side, and enters the guide groove 6 on the opposite side. After the two ends of the wire saw 8 emerge from the ground, they are connected to two power system driven winches 5 and driven by the two power systems driven winches 5. Through the forward and reverse rotation of the power system driven winches 5, the wire saw 8 is driven to move back and forth in the soil, thereby achieving the purpose of cutting the soil, destroying the soil structure, and turning it into soil debris.

[0023] The construction method of the anti-seepage composite curtain wall with integrated grooving and membrane planting involves winding the anti-seepage membrane 4 on the membrane spreading roller 7 and fixing the end of the anti-seepage membrane 4 to the wire saw 8 by adding a membrane sheet 12.

[0024] The construction method of the anti-seepage composite curtain wall integrating grooving and membrane planting is described in which, during the process of the wire saw 8 cutting the soil, the grooving and membrane planting integrated equipment 2 synchronously controls the column guide rod 3 to move downward, driving the wire saw 8 to move together into the depth of the stratum.

[0025] The construction method of the anti-seepage composite curtain wall with integrated grooving and membrane planting is described above. Both sides of the column guide rod 3 have built-in mud circulation holes 10. During the process of the wire saw 8 cutting the soil and lowering it, the mud circulation hole 10 on one side sprays mud in a positive circulation mode. The sprayed mud pushes the soil cut by the wire saw 8 to the mud circulation hole 10 on the other side, which uses a reverse circulation suction method. In this way, a mud circulation system is formed in the trench section. The mud has the function of maintaining the stability of the trench section and carrying soil debris out of the trench section.

[0026] The above-mentioned method for constructing a waterproof composite curtain wall by simultaneously excavating and planting the membrane involves pumping a slurry curing agent into the slurry circulation hole 10 while continuously raising the column guide rod 3. After the slurry in the trench section is mixed with the curing agent, it gradually solidifies to form a waterproof composite curtain wall.

[0027] The proposed method for constructing a waterproof composite curtain wall with integrated grooving and membrane planting utilizes integrated grooving and membrane planting equipment. This allows for the simultaneous completion of both processes in one operation, and the grooving width can be reduced to 30mm-50mm. In-situ slurry curing agents are used for slurry solidification in the grooving sections, significantly reducing slurry discharge. The resulting ultra-thin waterproof curtain wall exhibits a permeability coefficient of less than 1*10-8 cm / s, demonstrating superior impermeability.

[0028] Furthermore, the anti-seepage composite curtain wall proposed in this invention has significantly improved construction efficiency, with a membrane planting speed exceeding 350 m² / d and a construction depth greater than 30 m. This construction method can be used in fields such as underground pollutant barrier walls, dam anti-seepage core walls, and foundation pit water-stop curtains. It does not rely on high-energy-consuming curing agents and materials such as cement, making it a low-carbon and environmentally friendly construction method with high economic and social benefits.

Claims

1. A method for constructing a waterproof composite curtain wall with integrated grooving and membrane planting, comprising step 1, processing joint boxes (1) using vibration or pre-drilling technology, wherein each pair of joint boxes (1) is used as a group, the construction spacing between each pair of joint boxes (1) is consistent with the width of the membrane, and the implantation depth of the joint box (1) is greater than the laying depth of the membrane. Step 2: Set up the integrated trenching and film planting equipment (2); Step 3: Start the trenching and membrane planting integrated equipment (2) to cut the soil downward along the joint box (1) to form a trench and at the same time send the geomembrane into the ground along with the joint box (1) until the designed depth is reached; Step 4: After the trenching and membrane planting integrated equipment (2) has planted the geomembrane into the soil to the designed depth, the wire saw (8) is pulled back from the ground and the geomembrane (4) is separated from the trenching and membrane planting integrated equipment (2). in, The grooving and planting integrated equipment (2) cuts the soil by reciprocating wire saw (8). The wire saw (8) is driven by two power systems and winches (5) to achieve lateral reciprocating motion. When the wire saw (8) reaches the designed depth, one power system drives the winch (5) to disengage, and the other power system drives the winch (5) to move, pulling the wire saw (8) back from the ground to achieve the purpose of recycling. The grooving and film planting integrated equipment (2) places the geomembrane (4) on the film spreading roller (7). The geomembrane moves downward as the column guide rod (3) is gradually extended. The film spreading roller (7) simultaneously unfolds the geomembrane (4) and moves downward with the column guide rod (3). The integrated trenching and film planting equipment (2) includes two column guide rods (3), which are composed of end wire saw pulleys (9), guide plates, slurry pipes and mud circulation holes (10); Two upright guide rods (3) are aligned with the guide grooves (6) in the joint box (1). The wire saw (8) extends from the end of one upright guide rod (3), passes through the guide groove (6) on the same side, and enters the guide groove (6) on the opposite side. After the two ends of the wire saw (8) emerge from the ground, they are connected to two power system drive winches (5) and driven by the two power system drive winches (5). Through the forward and reverse rotation of the power system drive winches (5), the wire saw (8) is driven to move back and forth in the soil to achieve the purpose of cutting the soil, destroying the soil structure, and turning it into soil debris. During the process of the wire saw (8) cutting the soil, the grooving and film planting integrated equipment (2) synchronously controls the column guide rod (3) to move downward, driving the wire saw (8) to move together into the deep stratum.

2. The construction method of the anti-seepage composite curtain wall with integrated grooving and membrane planting as described in claim 1, characterized in that: The joint box (1) is a prefabricated steel structure or concrete rectangular component. A partition plate (11) is built into the joint box (1), thereby dividing the joint box into two independent boxes of equal width; thus, a single joint box (1) is responsible for the jointing of the two geomembranes on both sides.

3. The construction method of the anti-seepage composite curtain wall with integrated grooving and membrane planting as described in claim 1, characterized in that: When the column guide rod (3) moves downward in the joint box (1), the guide plate plays the role of ensuring that the column guide rod is centered.

4. The construction method of the anti-seepage composite curtain wall with integrated grooving and membrane planting as described in claim 1, characterized in that: The wire saw (8) passes through the wire saw pulley (9) at the end of the column guide rod (3). During the reciprocating motion of the wire saw (8), the wire saw pulley (9) limits the out-of-plane motion of the wire saw (8) to ensure that it only reciprocates in the direction of the membrane.

5. The construction method of the anti-seepage composite curtain wall with integrated grooving and membrane planting as described in claim 1, characterized in that: in The geomembrane (4) is wound around the membrane roller (7), and the end of the geomembrane (4) is fixed to the wire saw (8) by the membrane clamping sheet (12).

6. The construction method of the anti-seepage composite curtain wall with integrated grooving and membrane planting as described in claim 1, characterized in that: The guide rods on both sides have built-in mud circulation holes (10). During the cutting and lowering process of the wire saw (8), the mud circulation hole (10) on one side sprays mud in a positive circulation mode. The sprayed mud pushes the slag cut by the wire saw (8) to the mud circulation hole (10) on the other side, which uses a reverse circulation suction method. Thus, a mud circulation system is formed in the trench section. The mud has the function of maintaining the stability of the trench section and carrying soil debris out of the trench section.

7. The construction method of the anti-seepage composite curtain wall with integrated grooving and membrane planting as described in claim 4, characterized in that: in The slurry curing agent is pumped into the slurry pipe and enters the trench section through the slurry circulation hole (10). At the same time, the column guide rod (3) is continuously lifted. After the slurry in the trench section is mixed with the curing agent, it gradually solidifies and forms a seepage-proof composite curtain wall.

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