CN203965207U - A kind of sample preparation device of measuring the test of unsaturated soil matric suction for tensiometer method - Google Patents
A kind of sample preparation device of measuring the test of unsaturated soil matric suction for tensiometer method Download PDFInfo
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- CN203965207U CN203965207U CN201420302169.8U CN201420302169U CN203965207U CN 203965207 U CN203965207 U CN 203965207U CN 201420302169 U CN201420302169 U CN 201420302169U CN 203965207 U CN203965207 U CN 203965207U
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- sample preparation
- preparation device
- tensiometer
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Abstract
The utility model relates to a kind of for tensiometer measurement unsaturated soil matric suction test sample preparation device, belongs to civil engineering work soil test field.Comprise three 1/3 circular flap moulds, ring-shaped clip, base, footstock and micro-drilling devices, it is characterized in that, lobe mould, base are combined into one by clip, and footstock center is provided with circular hole, micro-drilling device is holed to sample by this hole, is provided with the spiral helicine native cutter of cutting in micro-drilling device.Advantage: simple to operate, soil sample repeatability is relatively good, has solved common tensiometer and has been difficult to use in indoor contradiction, and sample drilling quality is good, and remaining soil can not remain in hole, and tensiometer ceramic head is contacted closely with soil sample, has improved experimental measurement precision.
Description
Technical field
The one that the utility model relates to is measured unsaturated soil matric suction test sample preparation device for tensiometer, belongs to civil engineering work soil test field.
Background technology
Tensiometer is a kind of basic skills of directly measuring unsaturated soil mesostroma suction, and its advantage is that equipment is simple, easy to carry, can in unsaturated soil drying and watering cycle process, settle arbitrarily.The tensiometer that shop experiment adopts is at present all generally special design manufacture, and this increases experimentation cost greatly.The concept of unsaturated soil mechanics mesostroma suction derives from pedology the earliest, measure field soil water potential with tensiometer is widely applied in agricultural production, the tensiometer that field test adopts is simple in structure, low cost, but porous ceramics head volume is larger, when instrument is embedding, need to use boring cutter, such boring cutter is more suitable for the situation darker in boring, and drilling quality can not get ensureing, and is unfavorable for carrying out test on indoor small size soil body sample.
Summary of the invention
For making this low cost and easy universal tensiometer also can be applied to testing laboratory, the utility model provides a kind of sample preparation device that is applicable to this type of tensiometer and is convenient under lab carry out.This sample preparation device is simple in structure, on small sample basis, cut by being provided with built-in spiral shallow bore hole that the small-sized boring cutter of native cutter obtains can with the laminating of porous ceramics head closely, ensure the accuracy of vacuum table reading.
The utility model will solve the technical scheme that its technical matters will adopt:
A kind of for tensiometer measurement unsaturated soil matric suction test sample preparation device, comprise three 1/3 circular flap moulds, ring-shaped clip, base, footstock and micro-drilling devices, it is characterized in that: described sample preparation device is contained in soil sample in the cylinder being made up of three lobe moulds, the internal diameter of lobe mould is standard three axle specimen finish, ring-shaped clip is enclosed within banding cylinder outside cylinder, cylinder is stuck in and between footstock and base, forms an entirety, have individual circular hole to be connected with cylinder interior at the center of footstock, after dress sample, micro-drilling device is holed to place tensiometer to sample by this hole.
Described micro-drilling device is cut native cutter by cylinder and built-in spiral and is formed, the cylindrical wall of cylinder lower end is sharp-pointed, inwall is provided with the blade of three circle helical raised, whole cylinder outer wall is smooth, be conducive to the boring of shallow-layer soil sample, the rear surflaes of having holed is stayed in cylindrical wall, and hole wall is smooth, the convenient tensiometer of settling, is conducive to tensiometer and obtains valid data.
The beneficial effects of the utility model: this sample preparation device is simple to operate, soil sample repeatability is relatively good, has solved common tensiometer and has been difficult to use in indoor contradiction, sample drilling quality is good, remaining soil can not remain in hole, and tensiometer ceramic head is contacted closely with soil sample, has improved experimental measurement precision.
Brief description of the drawings
Fig. 1 is the structural representation of facing of sample preparation device.
Fig. 2 is the radial cross-section of structure described in Fig. 1.
Fig. 3 is micro-drilling device (1) radial cross-section of structure described in Fig. 1.
Fig. 4 is micro-drilling device (1) vertical view of structure described in Fig. 1.
Fig. 5 is footstock (2) vertical view of structure described in Fig. 1.
Fig. 6 is valve (3) vertical view of structure described in Fig. 1.
Fig. 7 is base (7) vertical view of structure described in Fig. 1.
Wherein: 1, micro-drilling device; 2, footstock; 3, lobe mould; 4, spiral is cut native cutter; 5, ring-shaped clip; 6, boring cutter sharp tip; 7, base.
Embodiment
Contrast accompanying drawing, illustrates its structure
In conjunction with Fig. 1～Fig. 7, a kind of tensiometer is measured unsaturated soil matric suction test sample preparation device, comprises three lobe moulds (3), base (7), ring-shaped clip (5), footstock (2) and micro-drilling device (1).Three lobe moulds (3) have formed a cylinder, and cylinder can be stuck on base, lobe mould (3) size and standard three axle sample consistent size.Be enclosed within lobe mould (3) outside by ring-shaped clip (5) valve (3) is stuck and avoids valve (3) to move at seam crossing, footstock (2) is placed in lobe mould (3) top.
Valve (3), base (7), ring-shaped clip (5) and footstock (2) are combined into an entirety, convenient mobile.Be provided with a circular hole at footstock (2) center, Circularhole diameter is 23mm ± 1mm, and micro-drilling device 1 can enter cylinder interior boring by this hole depth, to settle tensiometer.
Lobe mould (3), base (7), ring-shaped clip (5), footstock (2) and micro-drilling device (1) process by metal or metal alloy.
Embodiment: three lobe moulds (3) are stuck on base (7), cylinder skin at lobe mould (3) composition puts ring-shaped clip (5), the loose soil for preparing water percentage is packed in cylinder, hit reality according to the required dry density of test, specimen height is basic consistent with lobe mould height, covers footstock (2).The sharp tip of micro-drilling device (1) (6) is pressed in soil, rotate micro-drilling device (1) by hand, boring cutter sharp tip (6) and the spiral that is attached to micro-drilling device (1) inwall are cut native cutter (4) and can in soil sample, be holed easily, after getting into appropriate depth, take out boring cutter (1), now remaining soil can take out with micro-drilling device (1), prepared by sample, sample is prepared respond well.
Claims (5)
1. measure the sample preparation device of unsaturated soil matric suction test for tensiometer method for one kind, comprise micro-drilling device (1), footstock (2), three lobe moulds (3), ring-shaped clip (5) and base (7), it is characterized in that: described sample preparation device has formed a cylinder by three lobe moulds (3), it is upper that cylinder is stuck in base (7), lobe mould (3) size and standard three axle sample consistent size.
2. a kind of sample preparation device of measuring the test of unsaturated soil matric suction for tensiometer method according to claim 1, it is characterized in that: described sample preparation device is enclosed within lobe mould (3) outside by ring-shaped clip (5), three valves (3) are clamped mutually, avoid valve to move at seam crossing.
3. a kind of sample preparation device of measuring the test of unsaturated soil matric suction for tensiometer method according to claim 1, it is characterized in that: described sample preparation device footstock (2) is placed in lobe mould (3) top, valve (3), base (7), ring-shaped clip (5) and footstock (2) are combined into an entirety, convenient mobile.
4. a kind of sample preparation device of measuring the test of unsaturated soil matric suction for tensiometer method according to claim 1, it is characterized in that: described sample preparation device is provided with a circular hole at footstock (2) center, Circularhole diameter is 23mm ± 1mm, micro-drilling device (1) can enter cylinder interior boring by this hole depth, to settle tensiometer.
5. a kind of sample preparation device of measuring the test of unsaturated soil matric suction for tensiometer method according to claim 1, is characterized in that: described sample preparation device lobe mould (3), base (7), ring-shaped clip (5), footstock (2) and micro-drilling device (1) process by metal or metal alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420302169.8U CN203965207U (en) | 2014-06-03 | 2014-06-03 | A kind of sample preparation device of measuring the test of unsaturated soil matric suction for tensiometer method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420302169.8U CN203965207U (en) | 2014-06-03 | 2014-06-03 | A kind of sample preparation device of measuring the test of unsaturated soil matric suction for tensiometer method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203965207U true CN203965207U (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420302169.8U Expired - Fee Related CN203965207U (en) | 2014-06-03 | 2014-06-03 | A kind of sample preparation device of measuring the test of unsaturated soil matric suction for tensiometer method |
Country Status (1)
| Country | Link |
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| CN (1) | CN203965207U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459559A (en) * | 2018-12-25 | 2019-03-12 | 成渝铁路客运专线有限责任公司 | A kind of embedded device and test macro for deep layer rock soil water potential sensor |
-
2014
- 2014-06-03 CN CN201420302169.8U patent/CN203965207U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459559A (en) * | 2018-12-25 | 2019-03-12 | 成渝铁路客运专线有限责任公司 | A kind of embedded device and test macro for deep layer rock soil water potential sensor |
| CN109459559B (en) * | 2018-12-25 | 2024-03-29 | 成渝铁路客运专线有限责任公司 | Buried device for deep rock soil water potential sensor and test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20141126 Termination date: 20210603 |
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| CF01 | Termination of patent right due to non-payment of annual fee |