CN111980072A

CN111980072A - Epidemic prevention emergency laboratory anti-pollution construction method

Info

Publication number: CN111980072A
Application number: CN202010937361.4A
Authority: CN
Inventors: 徐永明; 任泳宇; 赖才阳; 龙永晃; 张文; 彭茂河; 张超; 甘洁
Original assignee: Guangdong Water & Electricity Equipment Installation Co ltd
Current assignee: Guangdong Water & Electricity Equipment Installation Co ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2020-11-24

Abstract

The invention discloses an anti-pollution construction method for an epidemic prevention emergency laboratory, which comprises the following steps: s1: laying a laboratory foundation comprising: s101: paving a soil impervious layer on the concrete base layer; s102: sequentially laying HDPE geomembrane and long-fiber geotextile on the soil impermeable layer by adopting a dry laying method to serve as the impermeable film layer; s103: laying a reinforced concrete ground layer on the impermeable film layer; s2: erecting a plurality of container laboratories on a reinforced concrete ground layer; s3: a plurality of test stands and hydroelectric facilities are installed in each container laboratory. The invention ensures the physical isolation of the above-ground structures from underground water and soil through 3 layers of isolation protection such as the concrete base layer, the anti-seepage film layer, the reinforced concrete ground layer and the like, and has the characteristics of simple construction and improved anti-virus leakage performance. The special PVC trap is used, and has the advantages of self-closing deodorant core and deodorant sealing ring; the experiment tables are all installed by adopting an all-steel central experiment table, and have good acid-base resistance, corrosion resistance and compression resistance.

Description

Epidemic prevention emergency laboratory anti-pollution construction method

Technical Field

The invention relates to the technical field of epidemic prevention laboratories, in particular to an anti-pollution construction method for an epidemic prevention emergency laboratory.

Background

The epidemic prevention emergency laboratory is used for researching epidemiology, molecular biology, virus culture separation identification, virus etiology, immunity and the like of a novel coronavirus (COVID-19) and the like, and provides scientific laboratory data for virus prevention and control. The establishment of epidemic prevention emergency laboratories has become a central part of the control work in order to more quickly and effectively prevent new coronavirus and treat patients infected with the new coronavirus due to the rough coming of the new coronavirus. The construction technology of the anti-pollution engineering of the epidemic prevention emergency laboratory becomes the important factor for building the epidemic prevention emergency laboratory. The construction period and the quality of the anti-pollution construction in the laboratory can influence the prevention and treatment work of the whole novel coronavirus.

In order to improve the anti-pollution construction quality and efficiency of the epidemic prevention emergency laboratory and transfer the epidemic prevention emergency laboratory to be used by medical staff more quickly and better, the application provides the anti-pollution construction method of the epidemic prevention emergency laboratory.

Disclosure of Invention

The invention aims to provide an anti-pollution construction method for an epidemic prevention emergency laboratory, which aims to prevent virus leakage, improve production efficiency, save cost and shorten construction period.

The invention is realized by the following steps:

an anti-pollution construction method for an epidemic prevention emergency laboratory is characterized by comprising the following steps:

s1: laying a laboratory foundation comprising:

s101: paving a soil impervious layer on the concrete base layer;

s102: sequentially laying HDPE geomembrane and long-fiber geotextile on the soil impermeable layer by adopting a dry laying method to serve as the impermeable film layer;

s103: laying a reinforced concrete ground layer on the impermeable film layer;

s2: erecting a plurality of container laboratories on a reinforced concrete ground layer;

s3: a plurality of test stands and hydroelectric facilities are installed in each container laboratory.

Further, the step of laying the long-fiber geotextile comprises the following steps:

laying needle-punched long-fiber polyester non-woven geotextile on the HDPE geomembrane;

paving a rubble layer with the thickness of 300mm on the needle-punched long-fiber polyester non-woven geotextile;

and laying long-fiber woven geotextile on the gravel layer.

Further, the HDPE geomembrane is a double-optical-surface HDPE geomembrane with the thickness of 1.5 mm.

Further, the HDPE geomembrane is composed of a plurality of HDPE geomembrane block splicing welding seams, wherein the seams of the HDPE geomembranes comprise transverse seams and longitudinal seams, and the transverse seams and the longitudinal seams form an I shape.

Furthermore, large-area seams among the HDPE geomembrane blocks are welded by a double-track hot-melting welding machine, and the large-area seams are welded by a hot air gun at the positions which cannot be reached by the hot-melting welding machine.

Furthermore, the test bed is made of a high-quality cold-rolled steel plate with the thickness of 1.2mm, which is subjected to acid pickling and phosphating treatment and is sprayed with epoxy resin electrostatic powder on the surface.

Furthermore, adjustable ground feet are installed at the bottom of the test bed, and a water baffle, an eye washer and an induction faucet are installed at the top of the test bed.

Furthermore, the mouth of a river under every test bench is connected with trap through the hydrophone down, trap is including the first drainage pipeline section, trap section, second drainage pipeline section, connection bend section and the third drainage pipeline section that connect gradually, the hydrophone is down connected to the one end of first drainage pipeline section, trap section and second drainage pipeline section constitution U type structure that the opening is ascending, second drainage pipeline section, connection bend section and third drainage pipeline section constitution U type structure that the opening is decurrent, the exit linkage sewer of third drainage pipeline section.

Furthermore, the second drainage pipe section, the first drainage pipe section and the third drainage pipe section are fixed through positioning snap rings respectively to ensure that the second drainage pipe section, the first drainage pipe section and the third drainage pipe section are parallel to each other.

Furthermore, the trap adopts a PVC trap with a self-closing deodorant core and a deodorant sealing ring.

Compared with the prior art, the invention has the beneficial effects that:

1. the laboratory foundation is isolated and protected by 3 layers such as a concrete base layer, an anti-seepage film layer, a reinforced concrete ground layer and the like, the physical isolation of an overground structure from underground water and soil is ensured, the construction is simple and convenient, the anti-virus seepage performance is realized, the anti-seepage film layer is constructed by using an HDPE geomembrane and long-fiber geotextile, and an air-laid method is used during construction, so that the construction speed is high, the operation is simple, and the construction surface requirement is low. And the HDPE geomembrane and the long-fiber geotextile are protected by two layers, so that the virus leakage resistance is improved, the environment is protected, no toxicity is caused, the fire operation is not needed, and the safety is high.

2. The special PVC trap is used, has the advantages of self-closing deodorant core and deodorant sealing ring, avoids turbulence effect, ensures that viruses, odor and the like can not be spread from upper layer to lower layer through the drain pipe, and falls 84 disinfectant into the trap every day, thus playing the role of killing novel coronavirus.

3. The experiment tables are all installed by adopting an all-steel central experiment table, and adopt high-quality cold-rolled steel plates with the thickness of 1.2mm, which are subjected to acid pickling and phosphating treatment and are sprayed with epoxy resin electrostatic powder on the surfaces, so that the steel plate has good acid-base resistance, corrosion resistance and compression resistance. And have adjustable combination lower margin, can make the installation more steady.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic diagram of the structure of a laboratory substrate of the present invention;

figure 2 is a schematic illustration of the splicing of HDPE geomembrane blocks of the present invention;

FIG. 3 is a schematic structural view of the test stand of the present invention;

FIG. 4 is a schematic view of the trap of the present invention.

Wherein, 1, a first drainage pipe section; 2. a water-storing elbow section; 3. a second drain pipe section; 4. connecting the bent pipe sections; 5. a third drain pipe section; 6. HDPE geomembrane blocks; 7. a water tank; 8. ground feet; 9. an induction faucet; 10. an eye washer; 11. and a baffle plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

According to the traditional on-site ground seepage-proofing construction, the traditional trap construction and the traditional experiment table construction efficiency and the anti-pollution construction quality, understanding and investigation are carried out.

The traditional ground seepage-proofing construction has the following defects: 1. low seepage-proofing coefficient, low chemical stability, easy aging, slow construction speed and some toxicity. The base binder is required to be coated during construction. Needs to clean the base layer carefully, has low construction speed and high requirement on the construction surface. One layer of waterproof coiled material has poor seepage prevention and asphalt toxicity. The construction needs to be done with fire, and the gas welding safety is poor.

2. The disadvantages of the conventional trap: has no self-closing deodorization function. Excessive connection construction of the trap is easy to increase leakage points. The sealing property is poor.

3. The defects of the traditional experiment table are as follows: the installation levelness adjusting capability is poor. The corrosion resistance is not high. The installation and replacement of parts is not flexible. The pressure resistance is poor.

The application provides an anti-pollution construction method for an epidemic prevention emergency laboratory, which is characterized by comprising the following steps:

s1: laying a laboratory foundation comprising:

s101: paving a soil impervious layer on the concrete base layer;

s102: sequentially laying HDPE geomembrane and long-fiber geotextile on the soil impermeable layer by adopting a dry laying method to serve as the impermeable film layer; the anti-seepage film layer constructed by the HDPE geomembrane and the long-fiber geotextile enables the overground structures to be physically isolated from underground water and soil, and has the advantages of simple and convenient construction and virus leakage prevention performance.

As shown in fig. 1, in this step, laying the long fiber geotextile may include the following steps:

and laying long-fiber woven geotextile on the gravel layer.

In the embodiment of the application, the long-fiber geotextile has good mechanical properties, good longitudinal and transverse drainage performance, good extensibility, high chemical stability such as biological resistance, acid and alkali resistance and aging resistance. Meanwhile, the filter also has wider pore diameter range, tortuous pore distribution, excellent permeability and excellent filtering performance.

In the embodiment of the application, compared with the traditional common waterproof material, the HDPE geomembrane has higher seepage-proofing performance, high-strength tensile mechanical property and excellent elasticity and deformation capacity, so that the HDPE geomembrane is very suitable for an expansion or contraction base surface and can effectively overcome the uneven settlement of the base surface. The HDPE geomembrane has low cost and high benefit, the novel technology is adopted to improve the anti-seepage effect, but the production process is more scientific and rapid, so the product cost is lower than that of the traditional waterproof material, and the cost is saved by about 50 percent by the actual measurement and calculation of the general engineering adopting the HDPE geomembrane. And the paint has the advantages of chemical stability, ageing resistance, plant root system resistance, high mechanical strength, high construction speed, environmental protection and no toxicity.

Further, as shown in fig. 2, the HDPE geomembrane is composed of a plurality of HDPE geomembrane blocks 6 which are spliced and welded, wherein the seams of the HDPE geomembranes comprise transverse seams and longitudinal seams, and the transverse seams and the longitudinal seams form an i shape. The adoption of the double-slit automatic creeping geomembrane welding ensures the tightness of smooth surface membrane construction and enhances the anti-virus leakage performance.

Furthermore, the large-area seams between the HDPE geomembrane blocks 6 are welded by adopting a double-track hot melting welder, the HDPE geomembrane is inserted between two pressing wheels of the double-track hot melting welder, and a pressing rod handle is pressed down to press two steel wheels for self-welding. The hot-air gun is adopted for welding at a place which cannot be reached by the hot-melt welding machine, the hot-melt welding and the hot-air gun welding ensure the tightness of the HDPE geomembrane, and the virus leakage prevention performance is enhanced.

In one example, the HDPE geomembrane and the long fiber geotextile are laid by the following process flows:

layout → laying, cutting → aligning, lapping → pressing mold shaping → wiping dust → trial welding → detecting → repairing → rechecking → acceptance.

And the HDPE geomembrane and the long-fiber geotextile are used for construction, and the technical operation key points are as follows:

(1) the construction concrete base layer is firm and flat, and is cleaned without rubbles, stones, concrete particles and other sharp-edge sundries.

(2) Paving construction climate requirements: the temperature is preferably 5-40 ℃, and the expansion and contraction properties of the long-fiber geotextile should be considered during laying.

(3) Wind power and rainy days: stopping construction when the wind power exceeds 4 grades or in rainy days; the sand bag is preferably used for pressing the long-fiber geotextile and the HDPE smooth film so as to facilitate construction.

(4) When the HDPE geomembrane is short enough, the HDPE geomembrane needs to be spliced in the longitudinal direction, transverse welding seams are welded firstly, longitudinal seams are welded, the distance between the transverse welding seams is more than or equal to 50m, the HDPE geomembrane needs to be in an I shape, and the HDPE geomembrane cannot be crossed in a cross shape.

(5) And (5) processing the T font. The welded welding key is formed by removing the stubbles of the welding lines and welding the stubbles by using a hot wedge welding machine, or directly repairing the stubbles along the T-shaped seams by using an extrusion welding machine after trimming.

(6) The slope intersection is laid and welded under special conditions, the impermeable membrane is required to be specially cut according to the actual shape so as to be tightly attached to the slope base, otherwise, the phenomenon of suspension or bulging is caused. The construction key point is that in the area, an operator needs to carefully measure and cut the HDPE geomembrane into an inverted trapezoid with a wide upper part and a narrow lower part.

(7) The HDPE geomembrane is welded by a double-track hot melting welding machine in a large area, extrusion welding is used in places which can not be repaired, covered or reached by the hot melting welding machine, and the HDPE geomembrane block 6 needs to be adjusted, so that the possibility of wrinkles and fish mouths of seams is reduced as much as possible.

(8) And (3) paving long-fiber geotextile on the HDPE geomembrane. When in laying, the coiled material is rolled from top to bottom, and the stone is used for temporary burying and pressing during laying.

(9) The seams of the long-fiber geotextile must be tight, natural lapping is adopted for laying, and the lapping width is not less than 15-20 cm.

S103: laying a reinforced concrete ground layer on the impermeable film layer;

Further, as shown in fig. 3, the bottom of the test bed is provided with adjustable feet 8, and the top of the test bed is provided with a water baffle, an eyewash 10 and an induction tap 9. Wherein, the water baffle is arranged on the periphery of the table top and is made of steel plate which is processed by acid cleaning and phosphorization and epoxy resin electrostatic powder spraying.

In the embodiment of the application, the construction process flow of the experiment table is as follows: assembling a frame of the experiment table → connecting a drawer and the frame → installing a side plate at the inner layer of the experiment table → adjusting feet 8, rotating to a distance of 5mm from the ground → assembling two experiment tables, putting a level gauge on the surface of the experiment table, adjusting feet 8, simultaneously referring to the level gauge until balancing → aligning the edges of the cabinets, connecting by nuts (injecting whether the surfaces of the two cabinets are flat or not during connection, if not, then slightly adjusting) → placing the table top of the experiment table, and adjusting the height of the table top → installing the experiment table top of the frame glue-applying installation → sewing the table top → installing parts (a water tank 7, a water nozzle, an eyewash device 10, an induction faucet 9 and the like) → applying glue to a butt joint → installing the side plate at the outer layer of the experiment table).

The construction technical operation key points of the all-steel central experiment table are as follows:

(1) the height of cabinet body lower margin 8 is adjusted, is measured with levelling rod and spirit level, makes horizontal, vertical level, prevents that the slope of experiment liquid from spilling.

(2) After the edges of the two cabinets are aligned, the two cabinets are connected with nuts by screws or bolts. During connection, attention is paid to whether the surface is flat or not and whether the surface is concave or convex.

(3) Before the table top of the experiment table is installed, whether the water tank and the reagent rack column holes exist on the table top is checked, and if the water tank and the reagent rack column holes exist, the water tank and the reagent rack column holes are opened before the table top is pasted.

(4) The mounting table top is firstly and uniformly marked on the bonding surface of the connected cabinet body, and when silica gel is coated, the silica gel around the mounting table top is 10-15mm away from the edge of the cabinet body, so that the glue cannot overflow after the table top is pressed. When the table top is placed, dislocation cannot occur, otherwise once the glue is moved, the glue overflows and falls onto the cabinet, and the gluing effect is not easily influenced by cleaning.

(5) After bonding, the mesa line transition and mesa flatness are checked, and if the mesa is not flat, two processing methods of hard material cushion or heavy object under high pressure can be selected, and which processing method is selected according to the situation.

(6) When the table top is sewn, if the corners of the table top are made into round corners, no seam can be left between the table tops; if the corner of the table-board needs to be made into a right angle, a gap with a thickness not more than 3mm needs to be reserved for glue filling. The step of the edge joint processing is to stick a piece of tattoo paper at the joint of the two table tops, then to print silica gel or epoxy resin glue with the same color as the table top, if the table top has a 3mm joint, the glue must be filled to prevent the joint from cracking and peeling. After 20 minutes of glue application, the table top glue is scraped with a metal plate or a doctor blade, the masking paper is torn off, and the surface is cleaned.

(7) The junction of mesa and the cabinet body needs a round of white silica gel, and the effect is in order to protect the laboratory bench.

(8) The eyewash equipment 10, the induction tap 9, the reagent rack upright post and the table top are also arranged and sealed to prevent water from permeating when the table top is scrubbed and prevent liquid from invading during experimental work.

Further, as shown in fig. 4, the drain port of each test stand is connected with a trap through a drainer, the trap includes a first drain pipe section 1, a trap pipe section 2, a second drain pipe section 3, a connecting bend pipe section 4 and a third drain pipe section 5 which are connected in sequence, one end of the first drain pipe section 1 is connected with the drainer, the first drain pipe section 1, the trap pipe section 2 and the second drain pipe section 3 form a U-shaped structure with an upward opening, the second drain pipe section 3, the connecting bend pipe section 4 and the third drain pipe section 5 form a U-shaped structure with a downward opening, and an outlet of the third drain pipe section 5 is connected with the sewer.

Further, the second drainage pipe section 3, the first drainage pipe section 1 and the third drainage pipe section 5 are fixed through positioning snap rings respectively to ensure that the first drainage pipe section and the third drainage pipe section are parallel to each other. Prevent to incline to left and right sides, because incline to the left and can lead to deodorant piece can't normally closed to realize deodorant anti-virus function. Deviation to the right can cause closure of the anti-odor flap resulting in an unclogged drain.

Furthermore, the trap adopts a PVC trap with a self-closing deodorant core and a deodorant sealing ring. The 90-degree large-opening and closing drainage of the drainage deodorization core is quick, and the drainage deodorization core is automatically closed when not draining water, so that the turbulence effect is avoided, and viruses, odor and the like can not be transmitted from the upper layer to the lower layer through the drainage pipe. 84 disinfectant is poured into the trap every day, so as to achieve the purpose of killing novel coronavirus.

Wherein, the trap can be extended and contracted by 40-90cm, and the water storage capacity of the trap is adjusted to the maximum as possible according to the field. During construction, the distance between the upper part and the lower part or between the left part and the right part of the water storage elbow is shortened as much as possible, so that the water storage quantity is adjusted to the maximum as possible, and the sewer is kept smooth.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-pollution construction method for an epidemic prevention emergency laboratory is characterized by comprising the following steps:

s1: laying a laboratory foundation comprising:

s101: paving a soil impervious layer on the concrete base layer;

s103: laying a reinforced concrete ground layer on the impermeable film layer;

2. The anti-pollution construction method for the epidemic prevention emergency laboratory according to claim 1, wherein the laying of the long fiber geotextile comprises the following steps:

and laying long-fiber woven geotextile on the gravel layer.

3. The anti-pollution construction method for the epidemic prevention emergency laboratory according to claim 1, wherein the HDPE geomembrane is a 1.5mm thick double-optical-surface HDPE geomembrane.

4. The epidemic prevention emergency laboratory pollution prevention construction method according to claim 3, wherein the HDPE geomembrane is composed of a plurality of HDPE geomembrane block splicing welding seams, wherein the seams of the HDPE geomembranes comprise transverse seams and longitudinal seams, and the transverse seams and the longitudinal seams form an I shape.

5. The anti-pollution construction method for the epidemic prevention emergency laboratory according to claim 4, wherein the large-area seams between the HDPE geomembrane blocks are welded by a double-rail hot-melting welding machine, and the large-area seams are welded by a hot air gun at the places where the hot-melting welding machine cannot reach.

6. The anti-pollution construction method for the epidemic prevention emergency laboratory according to claim 1, wherein the test bed is made of 1.2mm thick high-quality cold-rolled steel plate which is subjected to acid pickling and phosphating treatment and electrostatic powder spraying of epoxy resin on the surface.

7. The anti-pollution construction method for the epidemic prevention emergency laboratory according to claim 6, wherein an adjustable anchor is installed at the bottom of the test bed, and a water baffle, an eyewash and an induction tap are installed at the top of the test bed.

8. The anti-pollution construction method for the epidemic prevention emergency laboratory according to claim 1, wherein the sewer port of each test bed is connected with a trap through a sewer device, the trap comprises a first drainage pipe section, a trap pipe section, a second drainage pipe section, a connecting bend pipe section and a third drainage pipe section which are connected in sequence, one end of the first drainage pipe section is connected with the sewer device, the first drainage pipe section, the trap pipe section and the second drainage pipe section form a U-shaped structure with an upward opening, the second drainage pipe section, the connecting bend pipe section and the third drainage pipe section form a U-shaped structure with a downward opening, and an outlet of the third drainage pipe section is connected with a sewer.

9. The anti-pollution construction method for the epidemic prevention emergency laboratory according to claim 1, wherein the second drainage pipe section and the first drainage pipe section and the third drainage pipe section are fixed by a positioning snap ring respectively to ensure that the second drainage pipe section and the first drainage pipe section and the third drainage pipe section are parallel to each other.

10. The anti-pollution construction method for the epidemic prevention emergency laboratory according to claim 1, wherein the trap is a PVC trap with a self-closing deodorizing core and a deodorizing sealing ring.