CN204718934U - A kind of novel cohesive soil permeameter - Google Patents
A kind of novel cohesive soil permeameter Download PDFInfo
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- CN204718934U CN204718934U CN201520190747.8U CN201520190747U CN204718934U CN 204718934 U CN204718934 U CN 204718934U CN 201520190747 U CN201520190747 U CN 201520190747U CN 204718934 U CN204718934 U CN 204718934U
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- sleeve
- upper cover
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- circular groove
- auricle
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Abstract
The utility model discloses a kind of novel cohesive soil permeameter, it comprises base (2), sleeve (8), upper cover (10), gate-type fixed frame (12) and pressurization screw rod (13), the two ends of described sleeve (8) are placed in base (2) respectively and upper cover (10) is inner, it is characterized in that, described sleeve (8) inwall scribbles one deck vaseline thin layer, sleeve (8) is made up of two semicircular cylinders of symmetry, two corresponding junctions of semicircular cylinder are respectively equipped with auricle (9) with threaded hole, two panels auricle (9) is bolted to connection into cylindrical sleeve, two panels auricle (9) joint is provided with caulking gum packing ring (7).The utility model effectively prevent infiltration current " side leakage " or " current short circuit " phenomenon, improves the accuracy of test findings.
Description
Technical field
The utility model belongs to soil test technique field, relates to a kind of permeameter, particularly a kind of cohesive soil permeameter.
Background technology
At present, the cohesive soil permeameter generally used mainly comprises: base, block set, cutting ring, upper cover and pressurization screw rod, wherein base is provided with the fixed frame of circular groove, ring groove, gas outlet, water inlet pipe and band screw rod, on be covered with circular groove, ring groove and rising pipe, its key step comprises: cut soil sample with cutting ring and put into block set together, base is put into permeable stone, filter paper, ring washer successively, the block set of cutting ring and sample is housed, block set places filter paper, permeable stone, ring washer and upper cover successively, test can be started with screw rod is fixing.
When the principal element that this permeameter affects permeability test accuracy is to cut sample with cutting ring, because the dynamics pressing down cutting ring is uneven, cutting ring is easily crooked, make to occur space between cutting ring inwall and sample, to the experimenter lacked experience, this problem is particularly outstanding, owing to there is space in various degree between cutting ring inwall and sample, during test directly there is seepage by space in current, instead of there is real seepage flow through sample, namely there is so-called " side leakage " or " current short circuit " phenomenon, test findings can be obviously bigger than normal, lose authenticity, therefore the accuracy of coupon results is difficult to control, the impact of the artificial factor such as testee's test level is larger.
Utility model content
For the deficiencies in the prior art, the utility model object is to provide a kind of novel cohesive soil permeameter, by improving tube-in-tube structure, adopt sample directly to put into permeameter to test, avoid the space between cutting ring inwall and sample, thus overcome existing type permeameter in process of the test, permeate the defect that current exist side leakage in various degree.
The utility model technical solution is: a kind of novel cohesive soil permeameter, it comprises base, sleeve, upper cover, gate-type fixed frame and pressurization screw rod, the two ends of described sleeve are placed in base respectively and upper cover is inner, described sleeve lining scribbles one deck vaseline thin layer, sleeve is made up of two semicircular cylinders of symmetry, two corresponding junctions of semicircular cylinder are respectively equipped with auricle with threaded hole, two panels auricle is bolted to connection into cylindrical sleeve, and two panels auricle joint is provided with caulking gum packing ring.
In described base and upper cover, correspondence is provided with the first circular groove, the second circular groove and ring groove successively respectively, the shirt rim, outer, sleeve-port two ends of sleeve is located in the first circular groove of base and upper cover inside respectively, the sleeve-port two ends of sleeve are corresponding with the position of the second circular groove respectively, circular permeable stone is respectively equipped with in second circular groove, ring groove on base is connected with water inlet pipe and gas outlet respectively, and the ring groove above covered is connected with rising pipe;
Gate-type fixed frame is fixed on base both sides, and the screw that pressurization screw rod one end is provided with by the crossbeam central authorities of gate-type fixed frame is connected with upper cover.
The first circular groove junction in the shirt rim, outer, sleeve-port two ends of described sleeve and base and upper cover is provided with caulking gum packing ring.
The internal diameter of described second circular groove is greater than the sleeve-port diameter of sleeve, is less than sleeve stack shell external diameter, and the degree of depth of the second circular groove is less than circular permeable stone thickness.
the beneficial effects of the utility model are:
(1) test findings accuracy is improved, reduce test error, internal diameter, the height of sleeve are identical with sample, during test, with inwall uniform application, the clamp coupling of thin layer vaseline sandwiches the cylindrical sample cut in advance, auricle is fastening, then produce extruding between sleeve lining and sample, unnecessary vaseline is extruded, sleeve sandwiches sample completely, space between sleeve and sample, by vaseline filling, effectively prevent infiltration current " side leakage " or " current short circuit " phenomenon, improves the accuracy of test findings.
(2) apparatus structure is simple, easy to operate.
Accompanying drawing explanation
fig. 1it is the permeameter structural representation of the utility model embodiment.
Fig. 2 is the permeameter structure A-A diagrammatic cross-section of the utility model embodiment.
In figure; Sample 1, base 2, ring groove 3, water inlet pipe 4, gas outlet 5, circular permeable stone 6, caulking gum packing ring 7, sleeve 8, ear 9, upper cover 10, rising pipe 11, gate-type fixed frame 12, pressurization screw rod 13, first circular groove 14, second circular groove 15.
Embodiment
The utility model is by embodiment can the utility model will be further described below, but scope of the present utility model is not limited to following embodiment.
Embodiment 1:
A kind of novel cohesive soil permeameter as shown in Fig. 1-2, it comprises base 2, sleeve 8, upper cover 10, gate-type fixed frame 12 and pressurization screw rod 13, the two ends of described sleeve 8 are placed in base 2 respectively and upper cover 10 is inner, described sleeve 8 inwall scribbles one deck vaseline thin layer, sleeve 8 is made up of two semicircular cylinders of symmetry, two corresponding junctions of semicircular cylinder are respectively equipped with auricle 9 with threaded hole, two panels auricle 9 is bolted to connection into cylindrical sleeve, and two panels auricle 9 joint is provided with caulking gum packing ring 7.
In described base 2 and upper cover 10, correspondence is provided with the first circular groove 14, second circular groove 15 and ring groove 3 successively respectively, the shirt rim, outer, sleeve-port two ends of sleeve 8 is located in the first circular groove 14 of base 2 and upper cover 10 inside respectively, the sleeve-port two ends of sleeve 8 are corresponding with the position of the second circular groove 15 respectively, circular permeable stone 6 is respectively equipped with in second circular groove 15, ring groove 3 on base 2 is connected with water inlet pipe 4 and gas outlet 5 respectively, and the ring groove 3 on upper cover 10 is connected with rising pipe 11;
Gate-type fixed frame 12 is fixed on base 2 both sides, and the screw that pressurization screw rod 13 one end is provided with by the crossbeam central authorities of gate-type fixed frame 12 is connected with upper cover 10.
The first circular groove 14 junction in the shirt rim, outer, sleeve-port two ends of described sleeve 8 and base 2 and upper cover 10 is provided with caulking gum packing ring.
The internal diameter of described second circular groove 15 is greater than the sleeve-port diameter of sleeve 8, is less than sleeve 8 stack shell external diameter, and the degree of depth of the second circular groove 15 is less than circular permeable stone 6 thickness.
Experimental technique:
Adopt the utility model carry out cohesive soil permeability test, mainly comprise cut sample 1, sleeve 8 sandwiches sample, sleeve 8 Installation And Test record four steps.
First, a high 40.0mm is cut, the cylindrical sample 1 of diameter 61.8mm with cutting sample device.
Sample is sandwiched with sleeve, sleeve 8 is copper, the cylindrical shape that the material such as aluminium or stainless steel is made, be made up of the sheet metal of two panels symmetry, wall thickness 8.0mm, internal diameter 62.0mm(is slightly larger than sample 1 diameter 61.8mm), external diameter 78.0mm, height 40.0mm(equals the diameter of sample 1), sleeve 8 upper and lower side is equipped with shirt rim, hem width 10.0mm, external diameter is 82.0mm, thickness 8.0mm, wherein a slice side (comprising both sides and upper and lower flank side surface) is embedded with the rubber blanket 14 with sleeve wall uniform thickness, rubber blanket seals when two panels sleeve sandwiches sample, there is an auricle 9 with threaded hole the both sides of every sheet sleeve 8, with bolt by fastening for two auricles 9, two panels sleeve closes up and just aligns, form a complete sleeve 8.
During dress sample, the thin layer vaseline of 0.5mm is not less than at sleeve 8 inwall uniform application thickness, then preprepared sample 1 is sandwiched and by fastening for auricle 9, unnecessary vaseline is extruded from the two ends of sleeve 8 under fastening pressure effect, strike off the vaseline be extruded, sleeve 8 and sample 1 just define an entirety, and the space between sleeve and sample is by vaseline filling, effectively prevent the side leakage of infiltration current, improve experimental accuracy.
During test, base 2 is installed circular permeable stone 6, filter paper, caulking gum packing ring 7 successively, sandwiches the sleeve 8 having sample 1, sleeve 8 is placed filter paper, circular permeable stone 6, caulking gum packing ring 7 and upper cover 10, tighten pressurization screw rod 13 fixed cover on portal frame 12, whole experimental provision installation, give sample water filling saturated by water inlet pipe on base 24, get rid of the air in permeable stone 6 and ring groove 3, with regard to readable record after sample is saturated with gas outlet 5 simultaneously.
Claims (4)
1. a novel cohesive soil permeameter, it comprises base (2), sleeve (8), upper cover (10), gate-type fixed frame (12) and pressurization screw rod (13), the two ends of described sleeve (8) are placed in base (2) respectively and upper cover (10) is inner, it is characterized in that, described sleeve (8) inwall scribbles one deck vaseline thin layer, sleeve (8) is made up of two semicircular cylinders of symmetry, two corresponding junctions of semicircular cylinder are respectively equipped with auricle (9) with threaded hole, two panels auricle (9) is bolted to connection into cylindrical sleeve, two panels auricle (9) joint is provided with caulking gum packing ring (7).
2. the novel cohesive soil permeameter of one according to claim 1, it is characterized in that, in described base (2) and upper cover (10), correspondence is provided with the first circular groove (14) successively respectively, second circular groove (15) and ring groove (3), the shirt rim, outer, sleeve-port two ends of sleeve (8) is located in first circular groove (14) of base (2) and upper cover (10) inside respectively, the sleeve-port two ends of sleeve (8) are corresponding with the position of the second circular groove (15) respectively, circular permeable stone (6) is respectively equipped with in second circular groove (15), ring groove (3) on base (2) is connected with water inlet pipe (4) and gas outlet (5) respectively, ring groove (3) on upper cover (10) is connected with rising pipe (11),
Gate-type fixed frame (12) is fixed on base (2) both sides, and the screw that pressurization screw rod (13) one end is provided with by the crossbeam central authorities of gate-type fixed frame (12) is connected with upper cover (10).
3. the novel cohesive soil permeameter of one according to claim 1, is characterized in that: the first circular groove (14) junction in the shirt rim, outer, sleeve-port two ends of described sleeve (8) and base (2) and upper cover (10) is provided with caulking gum packing ring.
4. the novel cohesive soil permeameter of one according to claim 2, it is characterized in that: the internal diameter of described second circular groove (15) is greater than the sleeve-port diameter of sleeve (8), be less than sleeve (8) stack shell external diameter, the degree of depth of the second circular groove (15) is less than circular permeable stone (6) thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520190747.8U CN204718934U (en) | 2015-04-01 | 2015-04-01 | A kind of novel cohesive soil permeameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520190747.8U CN204718934U (en) | 2015-04-01 | 2015-04-01 | A kind of novel cohesive soil permeameter |
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| Publication Number | Publication Date |
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| CN204718934U true CN204718934U (en) | 2015-10-21 |
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| CN201520190747.8U Expired - Fee Related CN204718934U (en) | 2015-04-01 | 2015-04-01 | A kind of novel cohesive soil permeameter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353238A (en) * | 2016-10-31 | 2017-01-25 | 贵州大学 | Auxiliary device for permeability test of shale sample |
| CN107063974A (en) * | 2017-06-16 | 2017-08-18 | 山东大学 | A kind of pressable cohesive soil osmotic coefficient investigating pilot system and test method |
| CN107421871A (en) * | 2017-08-04 | 2017-12-01 | 云南建投绿色高性能混凝土有限公司 | Concrete permeable factor detection device and its method |
| CN109283113A (en) * | 2018-10-31 | 2019-01-29 | 中国矿业大学 | A kind of the concrete impermeability test device and test method of elimination of level circumferential pressure |
| CN110579372A (en) * | 2019-09-18 | 2019-12-17 | 四川大学 | novel undisturbed soil column sampling device and use method thereof |
-
2015
- 2015-04-01 CN CN201520190747.8U patent/CN204718934U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353238A (en) * | 2016-10-31 | 2017-01-25 | 贵州大学 | Auxiliary device for permeability test of shale sample |
| CN107063974A (en) * | 2017-06-16 | 2017-08-18 | 山东大学 | A kind of pressable cohesive soil osmotic coefficient investigating pilot system and test method |
| CN107063974B (en) * | 2017-06-16 | 2019-04-26 | 山东大学 | A kind of pressable cohesive soil osmotic coefficient investigating pilot system and test method |
| CN107421871A (en) * | 2017-08-04 | 2017-12-01 | 云南建投绿色高性能混凝土有限公司 | Concrete permeable factor detection device and its method |
| CN109283113A (en) * | 2018-10-31 | 2019-01-29 | 中国矿业大学 | A kind of the concrete impermeability test device and test method of elimination of level circumferential pressure |
| CN109283113B (en) * | 2018-10-31 | 2023-12-29 | 中国矿业大学 | Concrete impermeability test device and test method for eliminating horizontal hoop pressure |
| CN110579372A (en) * | 2019-09-18 | 2019-12-17 | 四川大学 | novel undisturbed soil column sampling device and use method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20190401 |
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| CF01 | Termination of patent right due to non-payment of annual fee |