CN202139613U

CN202139613U - Electronic intelligent impermeable membrane

Info

Publication number: CN202139613U
Application number: CN201120246657U
Authority: CN
Inventors: 李林
Original assignee: ZHENGZHOU RUNTONG ENVIRONMENT INSTRUMENT CO Ltd
Current assignee: ZHENGZHOU RUNTONG ENVIRONMENT INSTRUMENT CO Ltd
Priority date: 2011-07-13
Filing date: 2011-07-13
Publication date: 2012-02-08
Anticipated expiration: 2021-07-13

Abstract

The utility model relate to an electronic intelligent impermeable membrane, comprising an impermeable membrane body. An equal-potential layer which is in a sheet or net-shaped structure and made of conducting material is arranged in the impermeable membrane body. The electronic intelligent impermeable membrane is laid at an assigned position, applies high voltage to the equal-potential layer, and conducts leakage monitoring in the way of leakage current detection plus ultralow frequency square wave returning positioning; and if the leakage current is increased to a set value, the impermeable membrane is damaged. For the electronic intelligent impermeable membrane, the structure of an original impermeable membrane is improved, so that the occurrence of leakage and possible states can be monitored on line and in real time, thereby being capable of finding problems before accidents, eliminating the accidents in bud, and ensuring to avoid pollution caused by extensive toxic substance leakage.

Description

The electronic and intelligentized type antiseepage film

Technical field

The utility model relates to a kind of antiseepage film, particularly to a kind of improvement of a large amount of HDPE films that use now, enables the generation of leakage monitoring.

Background technology

The antiseepage film of using in the construction project, range of application mainly are to prevent ground infiltration, seepage, the protection of rivers,lakes and seas dam body, garden landscape artificial lake, riverbed protection in the geotechnological process of construction.What adopt in a large number now is HDPE high density geotechnique antiseepage film.The HDPE film is processed by high-density polyethylene material, the corresponding additive of interpolation.

Also adopt this antiseepage film in the environment-friendly engineering now, but the construction standard requirement is different with the environment-friendly engineering requirement, does not go wrong even accident when improvement accordingly can cause in environment-friendly engineering, using if do not carry out.Like the listed company Zijin mining industry of in May, 2010 across Guangdong, Fujian, HDPE film large tracts of land takes place and breaks in its slag landfill yard, and mine tailings cause severe contamination together with the slag percolate in an accident, cause containing the liquid and waste slag produced pollution whole piece rivers of heavy metal.The disaster many decades that causes to the locality can not recover.Located 3,000 ten thousand fine by national environmental protection department.Villager and other moneys of compensating this basin reach 1.7 hundred million.

Because common HDPE film is owing to be general density polyethylene film with high; All can be buried after in engineering, using underground; Later on whether damaged, break even external force is torn manual work with it and can not be seen, only wait until that the seepage accident has taken place passive dealing with to remedy.But the underground construction area is huge, and where problem takes place can not in time be located, and causes damage further to enlarge.

The utility model content

The purpose of the utility model provides a kind of electronic and intelligentized type antiseepage film, in order to solve the problem that present antiseepage film can not the early warning seepage takes place.

Be to realize above-mentioned purpose, the scheme of the utility model is: the electronic and intelligentized type antiseepage film comprises the antiseepage film body, the equipotential layer that is provided with one deck sheet or net structure in the said antiseepage film body, is made up of conductive material.

Said electronic and intelligentized type antiseepage film is established said equipotential layer by two-layer HDPE film folder and is constituted.

Said electronic and intelligentized type antiseepage film is formed by said equipotential layer spraying pvc material.

The antiseepage film of the utility model; Through improvement to this body structure of antiseepage film; Thereby generation and contingent state that can online immediately monitoring seepage; Thereby can before accident takes place, not pinpoint the problems, accident is eliminated in bud, guarantee can not cause noxious material leakage pollution on a large scale.Find after the breakage, detecting instrument starts " low frequency echo-bearing detection " automatically damage location positioned.According to the longitude and latitude numbering that is provided with in advance, cooperate and known length and width (being accurate to 1 centimetre) antiseepage film.Accurately find buried underground damage location.If position, so just improve polling rate, reduce the equipment use amount, not only fast but also power saving without breakage.

Description of drawings

Fig. 1 is first kind of embodiment structure chart (section) of the antiseepage film of the utility model;

Fig. 2 is second kind of embodiment structure chart (section) of the antiseepage film of the utility model;

Fig. 3 is the third embodiment structure chart (section) of the antiseepage film of the utility model;

Fig. 4 is an antiseepage film monitoring of leakage sketch map;

Fig. 5 is an antiseepage location sketch map.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is done further detailed explanation.

Antiseepage film

First kind of embodiment of antiseepage film

Antiseepage film sectional view as shown in Figure 1; Fitted tightly by upper, middle and lower-ranking and to form, upper strata and lower floor are the

impervious barrier

1,3 of polyvinyl chloride material, and the middle level is the equipotential layer that conductive material constitutes; Equipotential layer as shown in Figure 1 is one deck conductive foil 2, can also adopt conductive mesh.For manufacturing process, upper and lower layer adopts the HDPE high density geotechnique antiseepage film of standard, and net or sheet that the middle level adopts metal or other conductive materials to constitute use compression roller that two-layer HDPE film is fitted in equipotential layer both sides.In this embodiment, conductive foil 2 is not enclosed in the pvc material, during use, should seal the antiseepage film end with electric insulating sealant.

Second kind of embodiment of antiseepage film

As shown in Figure 2, at conductive foil 2 (both sides) spraying pvc material, thus one-shot forming.Adopt this mode, conductive foil 2 all is enclosed in the antiseepage film 20 of pvc material, and antiseepage film 20 ends are narrower, are convenient to the splicing of polylith antiseepage film 20 like this.

The third embodiment of antiseepage film

Of Fig. 3, only be with the difference of Fig. 2, conductive foil 2 is replaced with conductive mesh 21.

The monitoring of leakage method

As shown in Figure 4, antiseepage film (antiseepage film as shown in Figure 2) is laid under the pollutant 4.Through ac high-voltage booster 8, with power frequency city electric boost, high-voltage potential is added on the conducting strip 2 as the equipotential layer.Be that booster 8 one ends are connected to conducting strip 2 through insulated conductor 5, other end ground connection is carried out monitoring of leakage through the mode of detection of electrical leakage.The monitoring device 6 monitoring leakage currents that string is located in the monitoring circuit change, and do not damage in antiseepage film 20, and insulating properties are normal; Leakage current can not form the loop; Surpassing certain value if detect electric current, can think that then insulating capacity descends, possibly be antiseepage film 20 surface fractures; If electric current is bigger, then possibly be deep layer breakage even holes.So just, can realize the surface fracture of impervious barrier HDPE film, deep layer break, up to the electronic monitoring of holes.Use the antiseepage film of the utility model to be equipped with the monitor terminal 7 that receives monitoring device 6 signals again at the landfill yard of depositing toxic pollutant, monitor terminal 7 is located in the Control Room, makes the staff in time understand the situation of antiseepage film.

As other embodiments, booster 8 other end wiring are inserted in the pollutant 4, and as indicated with a dotted line in Fig. 4, its leakage current monitoring mode is identical, and this mode is fit to the breakage of monitoring antiseepage film 20 near pollutant 4 one sides.

Be illustrated in figure 5 as seepage localization method sketch map; Whole landfill yard below is spliced by several antiseepage film; As shown in the figure have four

antiseepage film

11,12,13,14, and they all have the size of standard, and set position also is known; Booster 8 is drawn the monitoring circuit of a plurality of parallel connections, corresponding each antiseepage film.When corresponding membrane has seepage, the monitoring device of corresponding monitoring circuit is indicated, and the staff just can learn it is that which piece antiseepage film is out of joint, and then the position of learning this film.

More accurate localization adopts " low frequency echo-bearing detection " that damage location is positioned; The ultralow frequency square wave is produced by instrumentation.Confirm the breaking point of certain piece antiseepage film through the echo-bearing of ultralow frequency square wave.Find piece (face) to find a little more earlier.Find after the breakage, detecting instrument starts " low frequency echo-bearing detection " automatically damage location positioned.According to the longitude and latitude numbering that is provided with in advance, cooperate and known length and width (being accurate to 1 centimetre) antiseepage film.Accurately find buried underground damage location.If position, so just improve polling rate, reduce the equipment use amount, not only fast but also power saving without breakage.

Claims

1. the electronic and intelligentized type antiseepage film comprises the antiseepage film body, it is characterized in that, the equipotential layer that is provided with one deck sheet or net structure in the said antiseepage film body, is made up of conductive material.

2. electronic and intelligentized type antiseepage film according to claim 1 is characterized in that, said electronic and intelligentized type antiseepage film is established said equipotential layer by two-layer HDPE film folder and constituted.

3. electronic and intelligentized type antiseepage film according to claim 1 is characterized in that, said electronic and intelligentized type antiseepage film is formed by said equipotential layer spraying pvc material.