阅读说明：本技术 一种半圆形排水管及其制备工艺 (Semicircular drain pipe and preparation process thereof ) 是由 李雪锋 郭雪平 于 2019-04-01 设计创作，主要内容包括：本发明公开了一种半圆形排水管及其制备工艺,排水管包括过塑弹簧钢丝和PVC复合膜,过塑弹簧钢丝的表面设置有PVC胶层,且过塑弹簧钢丝为均匀弯折的S型；PVC复合膜由PVC膜和短纤针刺土工布组成,过塑弹簧钢丝粘合于PVC复合膜上PVC膜所在一侧的中部,PVC复合膜通过压弯机压成U型半圆管,且PVC膜位于半圆管的内侧面,短纤针刺土工布位于半圆管的外侧面,过塑弹簧钢丝位于半圆管内侧的底面。本发明的半圆排水管可作为暗埋式排水管,分层分批埋设,具有能适应围岩逐渐变形的特点；由于排水通畅消除了外围水压力作用,改善了衬砌结构受力状况,减少对裂缝的产生；由于其深埋在隧道衬砌内部,在一般寒冷地区能有效防止排水管内冰冻及对结构物冻胀损害。(The invention discloses a semicircular drain pipe and a preparation process thereof, wherein the drain pipe comprises a plastic-coated spring steel wire and a PVC composite film, wherein a PVC adhesive layer is arranged on the surface of the plastic-coated spring steel wire, and the plastic-coated spring steel wire is in an S shape which is uniformly bent; the PVC complex film comprises PVC membrane and short fiber acupuncture geotechnique's cloth, crosses and moulds the spring wire bonding in the middle part of PVC membrane place one side on the PVC complex film, and the PVC complex film is pressed into U type semicircle pipe through the bending press, and the PVC membrane is located the medial surface of semicircle pipe, and short fiber acupuncture geotechnique's cloth is located the lateral surface of semicircle pipe, crosses and moulds the spring wire and be located the inboard bottom surface of semicircle pipe. The semicircular drain pipe can be used as a buried drain pipe, is buried in layers in batches, and has the characteristic of adapting to gradual deformation of surrounding rocks; because the drainage is smooth, the action of peripheral water pressure is eliminated, the stress condition of the lining structure is improved, and the generation of cracks is reduced; because the water-saving drainage pipe is deeply buried in the tunnel lining, the water-saving drainage pipe can effectively prevent freezing in the drainage pipe and frost heaving damage to a structure in a common cold region.)

1. A semicircular drain pipe comprises a plastic-coated spring steel wire (1) and a PVC composite film, and is characterized in that a PVC adhesive layer is arranged on the surface of the plastic-coated spring steel wire (1), and the plastic-coated spring steel wire (1) is of an S shape which is uniformly bent; the PVC complex film comprises PVC membrane (2) and short fiber acupuncture geotechnique cloth (3), cross and mould spring steel wire (1) and adhere to the middle part in PVC membrane (2) place one side on the PVC complex film, the PVC complex film is pressed into U type semicircle pipe through the bending press, just PVC membrane (2) are located the medial surface of semicircle pipe, short fiber acupuncture geotechnique cloth (3) are located the lateral surface of semicircle pipe, cross and mould spring steel wire (1) and be located the inboard bottom surface of semicircle pipe.

2. The preparation process of the semicircular drain pipe is characterized by comprising the following steps:

the method comprises the following steps: wrapping a layer of PVC glue layer outside the 2.6 mm steel wire by a laminator, wherein the diameter of the steel wire containing the PVC glue layer after the laminator is subjected to the plastic lamination is 4.0-4.3 mm;

step two: winding the steel wires after plastic coating into an S shape by a winding machine, and cutting off the steel wires one by one in four meters;

step three: the short fiber needle-punched geotextile (3) with the weight of 150 g, the width of 1.87 m and the length of 60 m is subjected to plastic coating by composite membrane equipment, so that the 150 g of short fiber needle-punched geotextile and the 500g of PVC membrane (2) are extruded and completely bonded together to form a PVC composite membrane;

step four: decomposing a PVC composite film with the weight of 650 g, the width of 1.87 meters and the length of 60 meters into strips with the width of 0.15 meters by a machine;

step five: placing the S-shaped overmoulded steel wire and the PVC composite film on a bonding frame, placing the composite film below, the overmoulded steel wire above, placing the composite film short fiber needle-punched geotextile (3) below, placing the PVC film (2) above, heating two ends of the steel wire for 12 seconds through an electric welding machine, and coating 502 glue on the joint part of the S-shaped overmoulded steel wire and the PVC composite film;

step six: pressing the bonded S-shaped steel wire composite membrane into a U shape by a bending press to form a semicircular pipe;

step seven: winding the half-round pipe into a roll and bagging the roll with four meters and five pieces together.

3. The manufacturing process of the semicircular drain pipe according to claim 2, wherein the diameter of the U-shaped semicircular pipe is 50 mm or 100 mm.

4. The manufacturing process of the semicircular drainpipe as claimed in claim 2, wherein the PVC film (2) is formed by dissolving PVC granules at high temperature.

5. The preparation process of the semicircular drain pipe according to claim 2, wherein when the plastic spring steel wire (1) is bonded with the composite film, the PVC glue layer of 3 cm at two ends of the steel wire is stripped to expose the steel wire, and then the steel wire is heated by a welder.

Technical Field

The invention relates to a drain pipe preparation process, in particular to a semicircular drain pipe and a preparation process thereof.

Background

The drain pipe mainly undertakes the drainage tasks of rainwater, sewage, farmland drainage and irrigation and drainage, etc. The prior drain pipe is a novel seepage and drainage plastic pipe which is formed by adding other additives into high-density polyethylene and has a corrugated shape, and the seepage corrugated pipe is processed by punching a groove and externally wrapping needle-punched geotextile around the pipe. Can be divided into single-wall water-permeable corrugated pipes and double-wall water-permeable corrugated pipes according to the type of the corrugated pipes. The existing drain pipe does not have the function of deforming along with surrounding rocks, is easy to damage due to the deformation of the surrounding rocks, has poor antifreezing capability and is easy to frost heaving and damage in cold regions.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the semicircular drain pipe and the preparation process thereof, which can solve the problems that the existing drain pipe does not have the function of deforming along with surrounding rocks, is easy to damage due to the deformation of the surrounding rocks, has poor freezing prevention capability and is easy to frost heaving and damage in cold regions.

In order to solve the technical problems, the invention provides the following technical scheme: a semicircular drain pipe comprises a plastic-coated spring steel wire and a PVC composite film, wherein a PVC glue layer is arranged on the surface of the plastic-coated spring steel wire, and the plastic-coated spring steel wire is in an S shape which is uniformly bent; the PVC complex film comprises PVC membrane and short fiber acupuncture geotechnique's cloth, cross the middle part of moulding spring steel wire bonding PVC membrane place one side on the PVC complex film, the PVC complex film is pressed into U type semicircle pipe through the bending press, just the PVC membrane is located the medial surface of semicircle pipe, short fiber acupuncture geotechnique's cloth is located the lateral surface of semicircle pipe, cross the bottom surface of moulding spring steel wire and being located semicircle intraductal side.

A preparation process of a semicircular drain pipe comprises the following steps:

the method comprises the following steps: wrapping a layer of PVC glue layer outside the 2.6 mm steel wire by a laminator, wherein the diameter of the steel wire containing the PVC glue layer after the laminator is subjected to the plastic lamination is 4.0-4.3 mm;

step two: winding the steel wires after plastic coating into an S shape by a winding machine, and cutting off the steel wires one by one in four meters;

step three: the short fiber needle-punched geotextile with the weight of 150 g, the width of 1.87 m and the length of 60 m is subjected to plastic coating by composite membrane equipment, so that the 150 g of short fiber needle-punched geotextile and 500g of PVC membrane are extruded and completely bonded together to form a PVC composite membrane;

step four: decomposing a PVC composite film with the weight of 650 g, the width of 1.87 meters and the length of 60 meters into strips with the width of 0.15 meters by a machine;

step five: placing the over-molded S-shaped steel wire and the PVC composite film on a bonding frame, placing the composite film on the lower part, placing the over-molded steel wire on the upper part, placing the composite film short fiber needle-punched geotextile on the lower part, placing the PVC film on the upper part, heating two ends of the steel wire for 12 seconds through an electric welding machine, and coating 502 glue on the joint part of the S-shaped over-molded steel wire and the PVC composite film;

step six: pressing the bonded S-shaped steel wire composite membrane into a U shape by a bending press to form a semicircular pipe;

step seven: winding the half-round pipe into a roll and bagging the roll with four meters and five pieces together.

As a preferable technical scheme of the invention, the diameter of the U-shaped semicircular pipe is 50 mm or 100 mm.

As a preferable technical scheme of the invention, the PVC film is formed by dissolving PVC granules at high temperature.

As a preferred technical scheme of the invention, when the plastic spring steel wire is bonded with the composite film, PVC glue layers of 3 cm are stripped from two ends of the steel wire to expose the steel wire, and then the steel wire is heated by an electric welding machine.

Compared with the prior art, the invention can achieve the following beneficial effects: the semicircular drain pipe can be used as a buried drain pipe, is buried in layers in batches, and has the characteristic of adapting to gradual deformation of surrounding rocks; the surrounding rock sand and mud are prevented from directly flowing into the drain pipe to cause blockage; because the drainage is smooth, the action of peripheral water pressure is eliminated, the stress condition of the lining structure is improved, and the generation of cracks is reduced; because the water-saving drainage pipe is deeply buried in the tunnel lining, the water-saving drainage pipe can effectively prevent freezing in the drainage pipe and frost heaving damage to a structure in a common cold area; the buried drain pipes are arranged in a rigid manner, so that the flow velocity of water flow in the pipes is high, the general water discharge of each drain pipe is not less than 50m/h, and the buried drain pipes can adapt to the drainage of groundwater under various geological conditions. After the semicircular drain pipe is used for non-pressure water prevention and drainage of the tunnel, the permanent smooth drainage in the tunnel structure can be ensured, the periphery of the tunnel lining structure becomes an environment without water pressure, and the water leakage of the tunnel in the service life is ensured.

Because the semicircular drain pipe adopts the composite geomembrane cover surface, the impact resistance of the semicircular drain pipe is greatly enhanced, and the problem of unsmooth drainage caused by blockage caused by silt or crystals entering the pipe due to the fact that the pipe surface is broken when the concrete is sprayed is thoroughly solved. Compared with other kinds of drain pipes, the anti-seepage effect is better in construction, no trouble is left, the transportation is convenient, the cost is low, the construction is convenient, and better benefits are brought to construction units.

The reinforced cloth spring drainage hose has the characteristics of acid and alkali resistance, no permeation and the like: the elastic and soft structure can be bent at will; can meet the requirements of uneven surrounding rock surfaces and cracks with various shapes; can adapt to the characteristic of gradual deformation of surrounding rocks; the impact force of the sprayed concrete can be borne without damage and deformation; the blocking caused by the direct inflow of the silt of the surrounding rock can be avoided; the action of water pressure at the periphery of the tunnel can be eliminated, and the stress condition of the lining structure is improved.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

wherein: 1. plastic coated spring steel wire; 2. a PVC film; 3. short fiber needle-punched geotextile.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Referring to fig. 1-2, a semicircular drain pipe comprises a plastic-coated spring steel wire 1 and a PVC composite film, wherein a PVC glue layer is arranged on the surface of the plastic-coated spring steel wire 1, and the plastic-coated spring steel wire 1 is in an S shape which is uniformly bent; the PVC complex film comprises PVC membrane 2 and short fiber acupuncture geotechnique's cloth 3, crosses and moulds spring steel wire 1 and bond in the middle part of PVC membrane 2 place one side on the PVC complex film, and the PVC complex film is pressed into U type semicircle pipe through the bending press, and PVC membrane 2 is located the medial surface of semicircle pipe, and short fiber acupuncture geotechnique's cloth 3 is located the lateral surface of semicircle pipe, crosses and moulds spring steel wire 1 and be located the inboard bottom surface of semicircle pipe.

Specifically, the preparation process of the semicircular drain pipe comprises the following steps: wrapping a layer of PVC glue layer outside the 2.6 mm steel wire by a laminator, wherein the diameter of the steel wire after being subjected to the laminator is 4.0-4.3 mm (containing the PVC glue layer);

the steel wires after plastic coating are wound into an S shape by a winding machine and are cut off by one in four meters;

the short fiber needle-punched geotextile with the weight of 150 g, the width of 1.87 m and the length of 60 m is subjected to plastic coating by composite membrane equipment, so that the 150 g of short fiber needle-punched geotextile and 500g of PVC membrane (PVC granules are dissolved at high temperature) are extruded and completely adhered together to form a PVC composite membrane;

decomposing a PVC composite film with the weight of 650 g, the width of 1.87 meters and the length of 60 meters into strips with the width of 0.15 meters by a machine;

placing the over-molded S-shaped steel wire and the PVC composite film on a bonding frame, placing the composite film at the lower part (the cloth cover is at the lower part, and the PVC film is at the upper part), placing the over-molded steel wire at the upper part (the PVC glue layer of 3 cm is stripped at the two ends of the steel wire to expose the steel wire), heating the two ends of the steel wire for 12 seconds by an electric welding machine, and coating 502 glue (proper amount) on the joint part of the S-shaped over-molded steel wire and the PVC;

pressing the bonded S-shaped steel wire composite membrane into a U shape (the diameter of the U shape is 50 mm or 100 mm and other specifications) by a bending press to form a semicircular tube;

winding four meters by one and five into a roll of packaging bag (finished product).

The semicircular drain pipe can be used as a buried drain pipe, is buried in layers in batches, and has the characteristic of adapting to gradual deformation of surrounding rocks; the surrounding rock sand and mud are prevented from directly flowing into the drain pipe to cause blockage; because the drainage is smooth, the action of peripheral water pressure is eliminated, the stress condition of the lining structure is improved, and the generation of cracks is reduced; because the water-saving drainage pipe is deeply buried in the tunnel lining, the water-saving drainage pipe can effectively prevent freezing in the drainage pipe and frost heaving damage to a structure in a common cold area; the buried drain pipes are arranged in a rigid manner, so that the flow velocity of water flow in the pipes is high, the general water discharge of each drain pipe is not less than 50m/h, and the buried drain pipes can adapt to the drainage of groundwater under various geological conditions. After the semicircular drain pipe is used for non-pressure water prevention and drainage of the tunnel, the permanent smooth drainage in the tunnel structure can be ensured, the periphery of the tunnel lining structure becomes an environment without water pressure, and the water leakage of the tunnel in the service life is ensured.

Because the semicircular drain pipe adopts the composite geomembrane cover surface, the impact resistance of the semicircular drain pipe is greatly enhanced, and the problem of unsmooth drainage caused by blockage caused by silt or crystals entering the pipe due to the fact that the pipe surface is broken when the concrete is sprayed is thoroughly solved. Compared with other kinds of drain pipes, the anti-seepage effect is better in construction, no trouble is left, the transportation is convenient, the cost is low, the construction is convenient, and better benefits are brought to construction units.

The reinforced cloth spring drainage hose has the characteristics of acid and alkali resistance, no permeation and the like: the elastic and soft structure can be bent at will; can meet the requirements of uneven surrounding rock surfaces and cracks with various shapes; can adapt to the characteristic of gradual deformation of surrounding rocks; the impact force of the sprayed concrete can be borne without damage and deformation; the blocking caused by the direct inflow of the silt of the surrounding rock can be avoided; the action of water pressure at the periphery of the tunnel can be eliminated, and the stress condition of the lining structure is improved.

The embodiments of the present invention are not limited thereto, and according to the above-described embodiments of the present invention, other embodiments obtained by modifying, replacing or combining the above-described preferred embodiments in various other forms without departing from the basic technical idea of the present invention by using the conventional technical knowledge and the conventional means in the field can fall within the scope of the present invention.