CN2929715Y - Instrument for detecting osmotic coefficient and anti-seepage gradient - Google Patents
Instrument for detecting osmotic coefficient and anti-seepage gradient Download PDFInfo
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- CN2929715Y CN2929715Y CN 200520043954 CN200520043954U CN2929715Y CN 2929715 Y CN2929715 Y CN 2929715Y CN 200520043954 CN200520043954 CN 200520043954 CN 200520043954 U CN200520043954 U CN 200520043954U CN 2929715 Y CN2929715 Y CN 2929715Y
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- infiltration coefficient
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Abstract
The utility model discloses a penetration coefficient and impermeabilisation gradient measuring apparatus, characterized in that the apparatus box is provided with a penetrated water pressure chamber and an inlet channel which is communicated with the penetrated water pressure chamber, wherein a lower permeable rock is arranged on the upper part of the penetrated water pressure chamber, a sample piece which is provided with an upper permeable rock is arranged on the lower permeable rock, a pressing sample ring which is fixedly connected with the apparatus box is arranged on the upper permeable rock, an outlet which is connected with a water-measuring device is arranged on the top of the apparatus cap. Waterproof sealing compound is adopted to seal and stop the water between the sample piece and the inner wall of the apparatus box. The utility model not only ensures that the filtration area of sample pieces is not influenced and permits of the filtration deformation of sample pieces, but also has a good hermeticity because waterproof sealing compound is adopted to seal and stop the water between the sample piece and the inner wall of the apparatus box, thereby the utility model has a high reliability and accuracy in measuring the penetration coefficient and impermeabilisation gradient of soil and rock.
Description
Technical field:
The utility model relates to the Geotechnical Engineering field tests, the particularly a kind of instrument that can measure rock soil mass infiltration coefficient and ratio of resistance seepage slope.
Background technology:
Rock soil mass is under seepage effect, seepage deformation takes place, may cause the engineering accident, therefore perviousness and the impervious destructive characteristics thereof of studying the soil body have great significance, in engineerings such as refuse landfill antiseepage, the antiseepage of deep basal pit curtain and river dike antiseepage, adopt cement mixing method continuous impervious wall or plastic concrete diaphragm wall as the antiseepage body mostly, infiltration coefficient and ratio of resistance seepage slope (gradient) are the critical index that cut-pff wall design and quality control detect.Because the infiltration coefficient of rock soil mass such as soil cement is very little, ratio of resistance seepage slope (gradient) is very high, measure its infiltration coefficient and ratio of resistance seepage slope (gradient), need higher seepage water pressure, and method of testing should be able to allow sample that seepage deformation destruction is taken place under seepage effect.This just requires can not leak around the sample under the high hydraulic pressure effect, and the fixture at sample top fixedly sample does not influence seepage area again, can also allow sample under seepage effect seepage deformation to take place.So the sealing around the sample and the fixing means at sample top are the gordian techniquies of measuring infiltration coefficient and ratio of resistance seepage slope.
The utility model content:
The purpose of this utility model provides a kind ofly can measure the infiltration coefficient of rock soil mass such as soil cement and the instrument of ratio of resistance seepage slope (gradient), adopt this instrument can effectively measure soil cement isolith soil body osmotic coefficient, can effectively measure its ratio of resistance seepage slope (gradient) again.
To achieve these goals, the technical solution of the utility model is: a kind of instrument of testing infiltration coefficient and ratio of resistance seepage slope, comprise the instrument box, be positioned at the instrument lid at instrument box top, it is characterized in that the intake tunnel that instrument box bottom is provided with the seepage water pressure chamber and is communicated with the seepage water pressure chamber, top, seepage water pressure chamber is provided with down permeable stone, sample is positioned on the following permeable stone, sample is provided with upper dankness stone, upper dankness stone is provided with sample-pressing ring, sample-pressing ring is fixedlyed connected with the instrument box, and the instrument tops is provided with freeing port, the external water gaging device of freeing port.
If sample is cylindrical, then upper dankness stone is an annular, and following permeable stone is circular, and sample-pressing ring is an annular, and the instrument box is the cylindrical shape that has the bottom surface, and the diameter of the external diameter of upper dankness stone, the external diameter of sample-pressing ring and the following permeable stone all internal diameter with the instrument box is identical.Should be noted that the infiltration coefficient of the osmotic coefficient ratio sample of permeable stone is big up and down, and the internal diameter of annular upper dankness stone should be greater than 5mm.Be coated with full waterproof sealing cream between sample and the instrument box.The instrument lid adopts transparent material to make.
The utility model adopts unique design not only to guarantee that the seepage area of sample was unaffected but also allow sample to produce seepage deformation, and adopt waterproof sealing cream to carry out hermetic seal around the sample and between the instrument box inwall, sealing is good, so rock soil mass infiltration coefficient and the ratio of resistance seepage slope (gradient) measured have very high fiduciary level and precision.
Description of drawings:
Fig. 1 is the synoptic diagram of the utility model one embodiment
Embodiment:
Below in conjunction with drawings and Examples the utility model is further described.
A kind of instrument of testing infiltration coefficient and ratio of resistance seepage slope, comprise instrument box 3, be positioned at the instrument lid 2 at instrument box 3 tops, it is characterized in that the intake tunnel 10 that instrument box bottom is provided with seepage water pressure chamber 9 and is communicated with the seepage water pressure chamber, top, seepage water pressure chamber is provided with down permeable stone 8, sample 5 is positioned on the following permeable stone 8, sample 5 is provided with upper dankness stone 6, upper dankness stone 6 is provided with sample-pressing ring 7, sample-pressing ring 7 is fixedlyed connected with instrument box 3, instrument covers 2 tops and is provided with freeing port 1, freeing port 1 external water gaging device.
If sample is cylindrical, then upper dankness stone is an annular, and following permeable stone is circular, and sample-pressing ring is an annular, and the instrument box is the cylindrical shape that has the bottom surface, and the diameter of the external diameter of upper dankness stone, the external diameter of sample-pressing ring and the following permeable stone all internal diameter with the instrument box is identical.The infiltration coefficient of osmotic coefficient ratio sample that should be noted that upper and lower permeable stone is big, and in general, the infiltration coefficient of permeable stone is greater than 1cm/s, and the infiltration coefficient of sample is less than 0.1cm/s, and the internal diameter of annular upper dankness stone should be greater than 5mm.
Between sample 5 and instrument box 3, be coated with one deck waterproof sealing cream 4.Instrument lid 2 adopts transparent material to make.
According to an embodiment of the present utility model, the intake tunnel 10 that is provided with seepage water pressure chamber 9 and is communicated with in instrument box 3 bottoms with seepage water pressure chamber 9.Rock soil mass such as soil cement are made cylindrical sample 7, the sample bottom is placed on the circular following permeable stone 14, the upper dankness stone 11 of annular is placed at the sample top, the external diameter of permeable stone is consistent with specimen finish up and down, sample is placed on 9 tops, seepage water pressure chamber of instrument box bottom together with the following permeable stone 14 of bottom, place one on annular upper dankness stone 11 tops at sample top and prevent the annular sample-pressing ring 10 of sample to top offset, sample-pressing ring 10 can be fixedlyed connected with the instrument box with screw.The external diameter of sample-pressing ring external diameter, the annular upper dankness stone all internal diameter with the instrument box is identical.Adopt waterproof sealing cream to carry out hermetic seal between sample 5 and instrument box 3, instrument lid 2 adopts transparent material to make, and can observe the destruction situation of sample under seepage effect thus.Adopt screw rod fixedly connected between instrument lid 2 and the instrument box 3.
Wherein waterproof sealing cream 4 can be pitch and Related product thereof, also can be paraffin or other waterproof and sealing material.
Independently apply seepage water pressure in the sample bottom, infiltration water is through sample, and the water delivering orifice that covers from instrument flows out, and water delivering orifice connects the water gaging device, and by measuring seepage water pressure, time and seepage flow just can calculate infiltration coefficient and ratio of resistance seepage slope (gradient).
Like this, sample top and bottom are adopted fixedly sample of annular permeable stone and circular permeable stone respectively, because the infiltration coefficient of permeable stone is much larger than the infiltration coefficient of sample, therefore do not influence the seepage area of sample, and the annular permeable stone at sample top also can allow sample to produce seepage deformation, thereby can measure the ratio of resistance seepage slope (gradient) of sample.Adopt waterproof sealing cream to carry out hermetic seal around the sample and between the instrument box inwall, can prevent effectively that sealing is from infiltrate between sample and the instrument box inwall.Apply seepage water pressure by the sample bottom, infiltration water is through sample, and the freeing port that covers from instrument flows out, and connects the water gaging device, by measuring seepage water pressure, time and seepage flow, can calculate infiltration coefficient and ratio of resistance seepage slope.The instrument tops is a transparent roof panels, can observe the destruction situation of sample under seepage effect thus.
The utility model adopts unique design not only to guarantee that the seepage area of sample was unaffected but also allow sample to produce seepage deformation, and adopt waterproof sealing cream to carry out hermetic seal around the sample and between the instrument box inwall, sealing is good, so rock soil mass infiltration coefficient and the ratio of resistance seepage slope (gradient) measured have very high fiduciary level and precision.
Because what adopt in the present embodiment is columniform sample, so instrument box, instrument lid, sample-pressing ring, the cross sectional shape of permeable stone all is circle or annular up and down.But those of ordinary skill in the art should understand, and instrument box, instrument lid, sample-pressing ring, as long as the cross sectional shape of permeable stone is the same with sample or supporting just passable up and down, not only can be circular, also can be oval, square, other shape such as triangle.The big small-scale of this instrument can be set according to the sample situation.
Claims (8)
1, a kind of instrument of testing infiltration coefficient and ratio of resistance seepage slope, comprise the instrument box, be positioned at the instrument lid at instrument box top, it is characterized in that the intake tunnel that instrument box bottom is provided with the seepage water pressure chamber and is communicated with the seepage water pressure chamber, top, seepage water pressure chamber is provided with down permeable stone, sample is positioned on the following permeable stone, sample is provided with upper dankness stone, and upper dankness stone is provided with sample-pressing ring, and sample-pressing ring is fixedlyed connected with the instrument box, the instrument tops is provided with freeing port, the external water gaging device of freeing port.
2, the instrument of test infiltration coefficient as claimed in claim 1 and ratio of resistance seepage slope, it is characterized in that sample is cylindrical, then upper dankness stone is an annular, following permeable stone is circular, sample-pressing ring is an annular, the instrument box is the cylindrical shape that has the bottom surface, and the diameter of the external diameter of upper dankness stone, the external diameter of sample-pressing ring and the following permeable stone all internal diameter with the instrument box is identical.
3, the instrument of test infiltration coefficient as claimed in claim 1 and ratio of resistance seepage slope, the internal diameter that it is characterized in that the annular upper dankness stone is greater than 5mm.
4, the instrument of test infiltration coefficient as claimed in claim 2 and ratio of resistance seepage slope, the infiltration coefficient of permeable stone is greater than the infiltration coefficient of sample about it is characterized in that.
5, the instrument of test infiltration coefficient as claimed in claim 2 and ratio of resistance seepage slope is characterized in that being coated with between sample and the instrument box one deck waterproof sealing cream.
6, the instrument of test infiltration coefficient as claimed in claim 5 and ratio of resistance seepage slope is characterized in that waterproof sealing cream is pitch.
7, the instrument of test infiltration coefficient as claimed in claim 5 and ratio of resistance seepage slope is characterized in that waterproof sealing cream is paraffin.
8, the instrument of test infiltration coefficient as claimed in claim 1 and ratio of resistance seepage slope is characterized in that the instrument lid adopts transparent material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520043954 CN2929715Y (en) | 2005-08-01 | 2005-08-01 | Instrument for detecting osmotic coefficient and anti-seepage gradient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520043954 CN2929715Y (en) | 2005-08-01 | 2005-08-01 | Instrument for detecting osmotic coefficient and anti-seepage gradient |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2929715Y true CN2929715Y (en) | 2007-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520043954 Expired - Fee Related CN2929715Y (en) | 2005-08-01 | 2005-08-01 | Instrument for detecting osmotic coefficient and anti-seepage gradient |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2929715Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556931A (en) * | 2018-10-31 | 2019-04-02 | 同济大学 | Soil cement cutting ring sample preparation facilities and permeability coefficient of cement soil measuring method, equipment |
| CN112595648A (en) * | 2020-12-14 | 2021-04-02 | 广东省水利水电科学研究院 | Device and method for detecting seepage failure ratio degradation quality of core sample of plastic concrete wall |
-
2005
- 2005-08-01 CN CN 200520043954 patent/CN2929715Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556931A (en) * | 2018-10-31 | 2019-04-02 | 同济大学 | Soil cement cutting ring sample preparation facilities and permeability coefficient of cement soil measuring method, equipment |
| CN112595648A (en) * | 2020-12-14 | 2021-04-02 | 广东省水利水电科学研究院 | Device and method for detecting seepage failure ratio degradation quality of core sample of plastic concrete wall |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070801 Termination date: 20130801 |