CN202041355U

CN202041355U - Leachate seepage and position detection device on refuse landfill

Info

Publication number: CN202041355U
Application number: CN2011200759625U
Authority: CN
Inventors: 常方强
Original assignee: Huaqiao University
Current assignee: Huaqiao University
Priority date: 2011-03-18
Filing date: 2011-03-18
Publication date: 2011-11-16
Anticipated expiration: 2021-03-18

Abstract

The utility model discloses a leachate seepage and position detection device on a refuse landfill. The detection device comprises an electric wire network, a PVC (Poly Vinyl Chloride) sleeve network and a high density resistivity instrument; the electric wire network is composed of an X-direction electric wire array extending along the X-direction and a Y-direction electric wire array extending along the Y-direction; PVC sleeves are sleeved outside electric wires in the electric wire network, thereby correspondingly forming the PVC sleeve network, and the pipe walls of the PVC sleeve pipes are provided with holes for leachate to flow in and out; and the electric wire network and the PVC sleeve network are respectively arranged in a second rubble layer of the refuse landfill or in a lower soil mass of a seepage-proofing layer, the X-direction electric wire array and the Y-direction electric wire array are respectively and electrically connected with the input end of the high density resistivity instrument, and the high density resistivity instrument is arranged outside the refuse landfill. The leachate seepage and position detection device on the refuse landfill can detect the seepage of the leachate as well as the specific position and the scope of the seepage.

Description

Waste landfill site leachate seepage and position detecting device thereof

Technical field

The utility model is a kind of equipment that drop liquid detects that oozes, and specifically is meant a kind of device that is used for waste landfill site leachate seepage and position probing thereof.

Background technology

Along with the develop rapidly of China's economic construction and the raising day by day of living standards of the people, increasing rubbish needs landfill disposal, and in modern health refuse landfill, the bottom lays geomembrane and clay seam is done the antiseepage processing.Influenced by construction factor, as geomembrane pierce through, seam is separated and bottom clay seam non-uniform settling and cause geomembrane drawing crack etc., geomembrane is difficult to ensure does not have hole or crack to exist, clay seam is bad as handling, also easily produce the crack, even, also be difficult to ensure not have and ooze drop liquid seepage so possess the landfill yard that double-deck antiseepage is handled.

Leak in the underground water and soil in case ooze drop liquid, will cause severe contamination.It is the matter inspection well of fetching water in the landfill area range of influence that the method whether drop liquid seepage takes place is oozed in traditional detection, extracts sampling of ground water, utilizes unpolluted water sample and the method that might contaminated water sample compares, to whether seepage detects.When this method detects seepage, serious seepage and underground water and soil have often taken place polluted, nor can detect the particular location that oozes drop liquid seepage.Therefore, at the problems referred to above, develop a kind of can detecting and ooze whether seepage and determine that the device of its particular location has necessity of drop liquid.

The utility model content

In view of this, the purpose of this utility model is to provide a kind of waste landfill site leachate seepage and position detecting device thereof, can detect the seepage of oozing drop liquid and the particular location of seepage.

In order to reach above-mentioned purpose, solution of the present utility model is:

A kind of waste landfill site leachate seepage and position detecting device thereof comprise wire mesh, PVC cover pipe network and high-density resistivity instrument; Described wire mesh is by constituting to the electric wire array to the Y that extends to the electric wire array with along Y to the X that extends along X; Thereby the described PVC cover of the corresponding formation of outer respectively sheathed PVC sleeve pipe of each electric wire in described wire mesh pipe network, the tube wall of described PVC sleeve pipe is provided with for the hole of oozing the turnover of drop liquid; Described wire mesh and PVC cover pipe network is located in the second layer metalling of refuse landfill respectively or in lower floor's soil body of impervious barrier, this X is electrically connected to the input end of high-density resistivity instrument to electric wire array and Y respectively to the electric wire array, and this high-density resistivity instrument is positioned at garbage loading embeading outside the venue.

Described X to electric wire array and described Y to the electric wire array between the upper and lower every setting.

Described X is positioned at a plane to the electric wire array, and described Y is positioned at another plane to the electric wire array.

Described X is electrically connected to the input end of a high-density resistivity instrument to the electric wire array, and described Y is electrically connected to the input end of another high-density resistivity instrument to the electric wire array.

Described X is positioned at more than the middle part of second layer metalling of refuse landfill or more than the middle part of lower floor's soil body of impervious barrier to the electric wire array to electric wire array and described Y.

After adopting said structure, the utility model waste landfill site leachate seepage and position detecting device thereof have following beneficial effect:

One, crisscross electric wire constitute respectively Y to electric wire array and X to the electric wire array, thereby form wire mesh, wherein electric wire is placed in the PVC sleeve pipe, prevents to pull apart because of the external force tension; Wire mesh is laid in lower floor's soil body of impervious barrier of refuse landfill or in the second layer metalling, and forms with the high-density resistivity instrument and to be electrically connected; If the resistivity of position, the pairing somewhere of wire mesh obviously reduces, show that promptly wire mesh electric wire is herein oozed the conducting of drop liquid, then judge seepage has taken place herein; The utility model can be determined seepage to the electric wire array to electric wire array and Y by X Y to X to the position, thereby find out the particular location that seepage takes place in the refuse landfill; Adopt this device to detect convenient, fast, exactly to ooze drop liquid whether seepage takes place, and the particular location of definite seepage, avoided that groundwater abstraction carries out the problem that the chemical composition analysis contrast took time and effort and detected delay in the conventional test methodologies;

Two, X to electric wire array and Y to the electric wire array between the upper and lower every setting, ooze like this drop liquid from top to bottom successively infiltrate X to electric wire array and Y to the electric wire array, again by X to always determining the particular location of seepage with Y; This by the penetration mode up and down that oozes drop liquid definite seepage position, can reduce because of ooze drop liquid at grade spread the monitoring location error that produces of diffusion, further improved the precision of searching the seepage position.

Description of drawings

Fig. 1 is the structural representation of the utility model waste landfill site leachate seepage and position detecting device thereof;

Fig. 2 is X to electric wire and Y to the laying synoptic diagram of electric wire in second layer metalling;

Fig. 3 is the cooperation synoptic diagram of PVC sleeve pipe and electric wire;

Fig. 4 is X to electric wire and Y to the laying synoptic diagram of electric wire in refuse landfill.

Among the figure:

PVC cover pipe network 10 PVC sleeve pipes 101

Wire mesh 11 X are to electric wire 111

X to electric wire array 112 Y to electric wire 113

Y is to electric wire array 114 high-density resistivity instrument 12

Refuse landfill 20 ground floor metallings 211

Ground floor geomembrane 212 ground floor clay seams 213

Second layer metalling 221 second layer geomembranes 222

Second layer clay seam 223

Embodiment

In order further to explain the technical solution of the utility model, the utility model is elaborated below by specific embodiment.

Shown in Fig. 1-4, the utility model waste landfill site leachate seepage and position detecting device thereof mainly are made up of PVC cover pipe network 10, wire mesh 11 and high-density resistivity instrument 12.

Wire mesh 11 is made of the electric wire of crisscross laying, and wherein the X of horizontal expansion forms X to electric wire array 112 to electric wire 111, and X is in electric wire array 112 is in same surface level; The Y of longitudinal extension forms Y to electric wire array 114 to electric wire 113, and Y is in electric wire array 114 is in same surface level.X keeps a determining deviation to electric wire array 112 and Y up and down to electric wire array 114, and the X that is in differing heights forms monitoring net to electric wire array 112 and Y to electric wire array 114.

X is electrically connected the input end of a high-density resistivity instrument 12 respectively to electric wire array 114 to electric wire array 112 and Y, two high-density resistivity instrument 12 are placed on outside the refuse landfill 20, respectively in order to test X to and the electric wire that makes progress of Y between resistivity, be convenient to timely monitoring like this.

X in electric wire 113 is located in PVC sleeve pipe 101 respectively, corresponding like this constitutes a PVC cover pipe network 10 to electric wire 111 and Y.The PVC sleeve pipe prevents that in order to the protection electric wire electric wire from breaking; Drill through plurality of holes on the tube wall of PVC sleeve pipe 101, the diameter of hole is unsuitable excessive, and quantity is too much unsuitable.Ooze drop liquid and enter the inside of PVC sleeve pipe 101 by hole, be dipped into electric wire, the electric wire top layer scribbles rust preventive, prevents because of air and oozes drop liquid generation corrosion.

PVC cover pipe network 10 and wire mesh 11 are laid in the second layer blotter 221 of refuse landfill 20; When wire mesh 11 is laid on the middle part of second layer blotter 221, can just in time find oozing the initial stage that seepage appears in drop liquid, for leak stopping provides the best opportunity.Certainly wire mesh 11 also can be laid in lower floor's soil body of impervious barrier.

In the present embodiment, lay ground floor metalling 211, ground floor geomembrane 212, ground floor clay seam 213, second layer metalling 221, second layer geomembrane 222 and second layer clay seam 223 etc. in refuse landfill 20 successively, wire mesh 11 is laid in the second layer blotter 221 of refuse landfill 20.If ground floor geomembrane 212 and ground floor clay seam 213 destroy, oozing drop liquid leaks in the second layer metalling 221 through destroying part, ooze drop liquid further the hole on the tube wall of PVC sleeve pipe 10 enter the inside of PVC sleeve pipe 10, be dipped into a certain in the wire mesh 11; The drop liquid level is long-pending to be enlarged if ooze, and is dipped into two in the wire mesh 11, and then the resistivity of this two wire obviously reduces, and shows that this position in the pairing refuse landfill of this two wire has been oozed drop liquid seepage; Particularly, the Y that X can only determine the seepage correspondence to electric wire 111 is to the position, and the X that determines the seepage correspondences to electric wire 113 by Y is to the position again, and X is to being the particular location that oozes drop liquid seepage with Y to the common position of determining.Particularly ooze drop liquid by down to penetrating successively down between the upper and lower every the X that is provided with to electric wire array 112 and Y to electric wire array 114, successively conducting X to electric wire 111 and Y to electric wire 113; This by seepage mode up and down and definite seepage position can be reduced because of oozing drop liquid spreading in same plane and be spread the monitoring location error that causes.

So key of the present utility model is after making full use of the percolate seepage and taking place, the resistivity in the metalling obviously reduces, by X to the wire mesh of upwards laying with Y, with determine landfill yard ooze X that drop liquid seepage takes place to Y to the position; Search by multiple spot, not only can determine the seepage position, can also determine the seepage scope.Therefore this device can detect convenient, fast, exactly and ooze drop liquid whether seepage takes place, and the particular location of definite seepage and scope, avoided that groundwater abstraction carries out the problem that the chemical composition analysis contrast took time and effort and detected delay in the conventional test methodologies, determined to provide a kind of new approach for oozing leak detection of drop liquid and position thereof.

The foregoing description and accompanying drawing and non-limiting product form of the present utility model and style, any person of an ordinary skill in the technical field all should be considered as not breaking away from patent category of the present utility model to its suitable variation or modification of doing.

Claims

1. waste landfill site leachate seepage and position detecting device thereof is characterized in that: comprise wire mesh, PVC cover pipe network and high-density resistivity instrument; Described wire mesh is by constituting to the electric wire array to the Y that extends to the electric wire array with along Y to the X that extends along X; Thereby the described PVC cover of the corresponding formation of the outer sheathed PVC sleeve pipe of each electric wire in described wire mesh pipe network, the tube wall of described PVC sleeve pipe is provided with for the hole of oozing the turnover of drop liquid; Described wire mesh and PVC cover pipe network is located in the second layer metalling of refuse landfill respectively or in lower floor's soil body of impervious barrier, this X is electrically connected to the input end of high-density resistivity instrument to electric wire array and Y respectively to the electric wire array, and this high-density resistivity instrument is positioned at garbage loading embeading outside the venue.

2. waste landfill site leachate seepage as claimed in claim 1 and position detecting device thereof is characterized in that: described X to electric wire array and described Y to the electric wire array between the upper and lower every setting.

3. waste landfill site leachate seepage as claimed in claim 2 and position detecting device thereof is characterized in that: described X is positioned at a plane to the electric wire array, and described Y is positioned at another plane to the electric wire array.

4. as claim 1,2 or 3 described waste landfill site leachate seepage and position detecting devices thereof, it is characterized in that: described X is electrically connected to the input end of a high-density resistivity instrument to the electric wire array, and described Y is electrically connected to the input end of another high-density resistivity instrument to the electric wire array.

5. waste landfill site leachate seepage as claimed in claim 4 and position detecting device thereof is characterized in that: described X is positioned at more than the middle part of second layer metalling of refuse landfill or more than the middle part of lower floor's soil body of impervious barrier to the electric wire array to electric wire array and described Y.