CN101963572B - Laboratory testing rig for detecting treatment effect by cement soil barrier isolation method - Google Patents
Laboratory testing rig for detecting treatment effect by cement soil barrier isolation method Download PDFInfo
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- CN101963572B CN101963572B CN2010102884780A CN201010288478A CN101963572B CN 101963572 B CN101963572 B CN 101963572B CN 2010102884780 A CN2010102884780 A CN 2010102884780A CN 201010288478 A CN201010288478 A CN 201010288478A CN 101963572 B CN101963572 B CN 101963572B
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Abstract
The invention belongs to the field of environmental civil engineering, in particular to a laboratory testing rig for detecting the treatment effect of soil cement soil barrier isolation method, which is used for detecting the effect of an isolation barrier on ion migration blocking in a laboratory. The rig is a rectangular box-shaped container without a cover plate, the internal space of the rectangular box-shaped container is divided into three cavities by two parallel thin cement soil walls, the middle cavity is used for containing artificially prepared contaminated soil or solution, and the other two lateral cavities are used for containing uncontaminated clean soil. The rig can obtain the diffusion coefficient and other parameters of the cement soil barrier based on a model test, and then evaluates the breakdown time of contaminants through the barrier and the serviceable life of the barrier based on a diffusion-dispersion equation, thereby realizing the evaluation of the cement soil barrier isolation method used in a contaminated site, the ion migration blocking effect thereof and the like.
Description
Technical field
The invention belongs to the environmental civil engineering field, specifically refer to the laboratory testing rig that a kind of soil cement barrier isolation method is disposed effect, be used for detecting the effect of isolation barrier blocks ions migration in the laboratory.
Background technology
At present, China is because system is thrown in the unexecuted refuse classification of most city, and component of refuse mixes, thus landfill disposal oneself become the main method of present stage China's most city processing of waste.According to " the domestic waste Sanitary Landfill Technology standard " of China Ministry of Construction 2004 promulgation regulation in (CJJ17-2004), the landfill yard that possesses nature antiseepage condition must satisfy, and " infiltration coefficient of lining should be greater than 10
-7Cm/s, the thickness of the end and wall lining should be less than 2m " requirement.Generally speaking, the infiltration coefficient of rock, soil layer can satisfy difficult the running in natural site of above-mentioned requirements, therefore, need carry out artificial antiseepage usually.
The landfill yard bottom seepage control measure of present domestic employing mainly contains the anti-horizontal leakage preventing that blends of vertical isolation.The common vertical isolation measure that is used to control pollutants transfer has: curtain-grouting, underground divider wall, deep-mixed pile wall, steel sheet-pile wall, high pressure jet grouting board wall etc.Wherein, As at landfill yard; Vertical curtain-grouting is anti-to blend deep-mixed pile owing on technical and economy, have certain advantage; Chang Zuowei preferred option in the landfill yard engineering, the glued less isolation curtain of infiltration coefficient that forms of its method grout and soil particle is isolated pollutant to block pollutant solute migration path.But in design, only shield it when becoming antiseepage; Pollutant also maybe be through the form migration of diffusion in fact; Though the mensuration of transfer parameter most accurately can be confirmed from site test; But doing like this can very time-consuming, and can pollute environment, so generally still confirm through the laboratory model test.More existing models and method all are to be directed against the clay isolation barrier, mainly are at the transfer parameter (like coefficient of diffusion) of experimental determination pollutant at the clay barrier.
Summary of the invention
The objective of the invention is weak point according to above-mentioned prior art; Provide a kind of soil cement barrier isolation method to dispose the laboratory testing rig of effect; By the thin wall of two parallel soil cements the rectangle box-shaped box is separated into three hole capitals after selling all securities; Middle hole capital after selling all securities is placed the pollution soil or the foul solution of artificial preparation, and the untainted pure land is placed on both sides.Obtain parameters such as coefficient of diffusion through model test to the soil cement barrier; Can estimate breakdown time and the tenure of use that pollutant passes through barrier according to the diffusion-dispersion equation then, and then can estimate the soil cement barrier partition method of contaminated site and the effect of blocks ions migration thereof etc.
The object of the invention is realized being accomplished by following technical scheme:
A kind of soil cement barrier isolation method is disposed the laboratory testing rig of effect, and this device mainly comprises a rectangle box-shaped box and two thin walls of soil cement, is separated into three hole capitals after selling all securities by the thin wall of two parallel soil cements in the said rectangle box-shaped box.
Connect seamless between the thin wall of above-mentioned rectangle box-shaped box side plate, base plate and soil cement;
The side that the thin wall of above-mentioned soil cement is positioned at the storehouse, both sides is provided with the stainless steel supporting network;
In three hole capitals after selling all securities of above-mentioned casing, the side plate lower position of both sides hole capital after selling all securities offers apopore, and said apopore place is equipped with water swivel;
In three hole capitals after selling all securities of above-mentioned casing, the volume of middle hole capital after selling all securities is the summation of both sides hole capital after selling all securities volume;
The length breadth ratio of the middle hole capital after selling all securities of above-mentioned casing is not less than 2.
A kind of device of making the thin wall of soil cement in the above-mentioned laboratory testing rig; This device has above-mentioned identical rectangle box-shaped box; The installation site of the thin wall of every soil cement in said casing is parallel to be placed with two blocks of PVC plates, and spacing is not less than the thin wall thickness degree of soil cement between said two blocks of PVC plate plates.
Between two blocks of PVC plates of the parallel placement in installation site of the thin wall of above-mentioned every soil cement, be provided with a PVC porous plate; The PVC plate of said PVC porous plate and middle hole capital after selling all securities one side fits, and spacing is consistent with the thin wall thickness degree of said soil cement between the plate between PVC porous plate and another piece PVC plate.
In addition, be fixedly connected the position with the PVC plate, have additional the rib of fixing said PVC plate at the box-like model casing medial surface of rectangle.
Advantage of the present invention is; Install simple, practical, economic; Make simply, only can be assembled into, do not need cover plate with several plastic plates; Only need a base plate, several side plates, and can measure the migration of pollutant (like ion) simultaneously through the cement soil wall of two kinds of different water cement contents or different-thickness.Cheap, as long as box like is the cost about hundreds of unit.In the process of the test, have only diffusion process to exist, do not have the interference of seepage flow, the coefficient of diffusion that records is pure coefficient of diffusion, relatively accurately.
Description of drawings
Fig. 1 is a laboratory testing rig structural representation among the embodiment;
Fig. 2 is the apparatus structure synoptic diagram when the making soil cement approaches wall among the embodiment;
Fig. 3 is the apparatus structure synoptic diagram after the form removal when making soil cement approaches wall among the embodiment.
Embodiment
Through embodiment characteristic of the present invention and other correlated characteristic are done further explain below in conjunction with accompanying drawing, so that technician's of the same trade understanding:
What label 1-7 indicated among the accompanying drawing 1-3 is: box-shaped box 1, the thin wall 2 of soil cement, apopore 3, PVC plate 4, PVC porous plate 5, rib 6, stainless steel supporting network 7.
Visible by Fig. 1, in three hole capitals after selling all securities of casing, the side plate lower position of both sides hole capital after selling all securities all offers apopore 3, and water swivel can be installed by the apopore place, emits the pore water in the soil during convenient the use.Be the thin wall of fixing protection soil cement, can also stainless steel supporting network 7 or PVC porous plate 5 be set in the side of the thin wall of soil cement.
For making the thin wall of soil cement in the above-mentioned laboratory testing rig, the device that present embodiment provides such as Fig. 2, shown in Figure 3.Fig. 2 is the apparatus structure synoptic diagram when the making soil cement approaches wall among the embodiment, and Fig. 3 is the apparatus structure synoptic diagram after the form removal when making soil cement approaches wall among the embodiment.Visible from Fig. 2, Fig. 3; The device of making the thin wall 2 of soil cement has with identical rectangle box-shaped box shown in Figure 1; Just the parallel sided in the installation site of the thin wall of every soil cement shown in Figure 1 is placed with that the spacing size is not less than the thin wall thickness degree of soil cement between 4, two blocks of PVC plates of two blocks of PVC plates.In the present embodiment; As shown in Figure 2; Between two blocks of PVC plates of the parallel placement in installation site of the every thin wall 2 of soil cement, be provided with a PVC porous plate 5, the PVC plate 2 of PVC porous plate and middle hole capital after selling all securities one side fits; Spacing is consistent with the thin wall thickness degree of soil cement between the plate between PVC porous plate and another piece PVC plate, toward adding cement grout therebetween, making soil cement approach the wall moulding.
In addition, when making the thin wall of soil cement, set up the rib 6 of fixing PVC plate at the box-like model casing medial surface of rectangle corresponding to PVC Board position place, to strengthen fixing PVC plate.
After treating that the thin wall of soil cement obtains the maintenance of certain hour, certain intensity is arranged, carry out form removal, remove the PVC plate, as shown in Figure 3.For preventing the distortion and the cracking of cement soil wall after the form removal, support mutually with the stainless (steel) wire that installs additional by the PVC porous plate in the cement soil wall both sides.Through after a while maintenance, firm, promptly accomplish the making of the thin wall of soil cement on the box-like model casing of rectangle again.
Claims (9)
1. a soil cement barrier isolation method is disposed the laboratory testing rig of effect; It is characterized in that this device mainly comprises a rectangle box-shaped box and two thin walls of soil cement; Be separated into three hole capitals after selling all securities by the thin wall of two parallel soil cements in the said rectangle box-shaped box; Connect seamlessly between the thin wall of said rectangle box-shaped box side plate, base plate and soil cement, in three hole capitals after selling all securities of said casing, the side plate lower position of both sides hole capital after selling all securities offers apopore.
2. a kind of soil cement barrier isolation method as claimed in claim 1 is disposed the laboratory testing rig of effect, it is characterized in that the side that the thin wall of said soil cement is positioned at the storehouse, both sides is provided with the stainless steel supporting network.
3. a kind of soil cement barrier isolation method as claimed in claim 1 is disposed the laboratory testing rig of effect, it is characterized in that said apopore place is equipped with water swivel.
4. a kind of soil cement barrier isolation method as claimed in claim 1 is disposed the laboratory testing rig of effect, it is characterized in that the length breadth ratio of the middle hole capital after selling all securities of said casing is not less than 2.
5. a kind of soil cement barrier isolation method as claimed in claim 1 is disposed the laboratory testing rig of effect, it is characterized in that the volume of middle hole capital after selling all securities is the summation of both sides hole capital after selling all securities volume in three hole capitals after selling all securities of said casing.
6. device of making the thin wall of soil cement in the said laboratory testing rig of claim 1; It is characterized in that this device has the rectangle box-shaped box identical with the box-shaped box of rectangle described in the claim 1; As model casing; The installation site of the thin wall of every soil cement in said casing is parallel to be placed with two blocks of PVC plates, and spacing is not less than the thin wall thickness degree of soil cement between said two blocks of PVC plate plates.
7. a kind of device of making the thin wall of soil cement as claimed in claim 6 is characterized in that between two blocks of PVC plates of the parallel placement in installation site of the thin wall of said every soil cement, being provided with a PVC porous plate.
8. a kind of device of making the thin wall of soil cement as claimed in claim 7 is characterized in that the PVC plate of said PVC porous plate and middle hole capital after selling all securities one side fits, and spacing is consistent with the thin wall thickness degree of said soil cement between the plate between PVC porous plate and another piece PVC plate.
9. a kind of device of making the thin wall of soil cement as claimed in claim 7 is characterized in that being fixedly connected the position at the box-like model casing medial surface of rectangle with the PVC plate, has additional the rib of fixing said PVC plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102884780A CN101963572B (en) | 2010-09-21 | 2010-09-21 | Laboratory testing rig for detecting treatment effect by cement soil barrier isolation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102884780A CN101963572B (en) | 2010-09-21 | 2010-09-21 | Laboratory testing rig for detecting treatment effect by cement soil barrier isolation method |
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| CN101963572A CN101963572A (en) | 2011-02-02 |
| CN101963572B true CN101963572B (en) | 2012-05-23 |
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| CN2010102884780A Expired - Fee Related CN101963572B (en) | 2010-09-21 | 2010-09-21 | Laboratory testing rig for detecting treatment effect by cement soil barrier isolation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104359799A (en) * | 2014-10-27 | 2015-02-18 | 同济大学 | Indoor test device for detecting effect of blocking ion diffusion by active seepage-proof barriers |
| CN105223109A (en) * | 2015-10-20 | 2016-01-06 | 同济大学 | Measure the centrifuge test device that soil cement barrier isolation method disposes isolation effect |
| CN111024578A (en) * | 2019-12-03 | 2020-04-17 | 中铁十局集团第五工程有限公司 | Simulation tank testing device and testing method for underground diaphragm wall |
| CN111289419B (en) * | 2020-03-24 | 2021-03-02 | 中南大学 | Measuring device for engineering barrier membrane effect in heavy metal pollution site |
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| FR2301003A1 (en) * | 1975-02-17 | 1976-09-10 | Electricite De France | PROCEDURE AND DEVICE FOR TIGHTNESS CONTROL OF WORKS, ESPECIALLY CONCRETE |
| CN1111737C (en) * | 1999-09-10 | 2003-06-18 | 清华大学 | Rapid evaluation method for concrete permeability |
| CN1207467C (en) * | 2003-02-12 | 2005-06-22 | 中基发展建设工程有限责任公司 | Application of water injection method for making plastic concrete leakage proof wall in garbage sanitary embedding field |
| JP4473763B2 (en) * | 2005-03-30 | 2010-06-02 | 住友大阪セメント株式会社 | Containment method for contaminated soil |
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