CN205957879U - A simple and easy device for determining great metalling angle of repose of particle diameter - Google Patents
A simple and easy device for determining great metalling angle of repose of particle diameter Download PDFInfo
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- CN205957879U CN205957879U CN201620922763.6U CN201620922763U CN205957879U CN 205957879 U CN205957879 U CN 205957879U CN 201620922763 U CN201620922763 U CN 201620922763U CN 205957879 U CN205957879 U CN 205957879U
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- angle
- repose
- particle diameter
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- metaling
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Abstract
The utility model relates to a simple and easy device for determining great metalling angle of repose of particle diameter belongs to the geotechnical engineering field, piles up the forming process based on simulation shot body slope, carries out the survey device at the great metalling angle of repose of particle diameter, can effectively solve traditional angle of repose methods of measurement have serious peak clipping effect and critical pile up the state indeterminate with can not direct read angle of repose numerical value, measure the inaccuracy scheduling problem. Its characterized in that base side has the inclination to be 70 smooth swash plate to link to each other, and the base lateral wall is equipped with expects the valve, and there is the transparent body glass wall of perpendicular to bottom plate in the dead ahead of bottom plate, is connected with the sliding plate groove who is on a parallel with pedestal horizontal plane between transparent body glass wall and base, and it can the gliding angular surveying ware of horizontal direction to be equipped with in the sliding plate groove, the utility model discloses it has following characteristics to compare with original measuring device: simple structure, the facility is simple and crude, labour saving and time saving, device cost low cost, measurement angle degree convenience directly perceived is suitable for the measurement of particle diameter than large bone material angle of repose.
Description
Technical field
The utility model belongs to Geotechnical Engineering field, is piled up based on the bulk solid slope being widely present in simulation nature and is formed
Process, is related to a kind of easy device for measuring particle diameter larger metaling angle of repose.
Background technology
Granular material is a kind of complicated discontinuous media, and it is that have a scale by what nature or artificial action were formed
The uneven heterogeneous system of very little and intensity.Non-coherent material is widely used in side slope, coal mine roadway, underground chamber, railway road
Base, in the geotechnical foundation engineering such as dykes and dams.Granular material piles up formed taper slope under gravity at slope angle
For bulk solid slope, particularly China western part is arid, semiarid western mountainous areas, topography variation is violent and slacking is serious
Slope area, with the presence of substantial amounts of bulk solid slope, be commonly called as " sand-sliding slope ".The stability problem on bulk solid slope relates generally to
The engineerings such as dykes and dams, side slope, road, the slope dilapidation being caused by its unstability, the geological disaster such as mud-rock flow is to the life of people and wealth
Produce safety etc. and cause immeasurable loss.The important parameter index angle of repose of bulk solid slope stability can be reflected, be
The synthesis of bulk solid slope many features embodies.
Angle of repose refers to shot aggregate when certain altitude continuously drops to ground naturally, the free accumulation table being formed
Face and the maximum angle of horizontal plane.Angle of repose reflects interior frictional behaviour and the mobile performance of shot aggregate.When positioned at cone
Aggregate on inclined-plane, its gravity along bevel direction component be equal to or less than intergranular internal friction when, then particles of aggregates
Transfixion on inclined-plane.The bigger aggregate in angle of repose, intergranular internal friction is bigger, and mobility is less.
At present the research at angle of repose is focused primarily upon to the research at granular aggregate angle of repose, the traditional angular measurement that stops
Method is mainly falling bodies and becomes cone method, will aggregate to be measured freely fall from certain altitude through funnel device discharging opening, in horizontal plane
Upper formation cone, the repeatedly basal diameter of measurement cone, and seek the mean value of its radius, then survey its accumulation body top away from heap
The height of long-pending body bottom vertical direction, goes out angle with the tangent value inverse that is used for of cone height and bottom surface radius.Through excessive
The secondary mean value repeating test, obtaining same aggregate angle of repose, is the angle of repose of this kind of aggregate.
However, in practice, such angle measuring method that stops can not be directly used in the larger metaling of particle diameter and stop
The measurement at angle.Firstly, since the particle size range of metaling is larger and metaling is with corner angle, concavo-convex differ, various shapes
Aggregate, using during funnel method blanking, large-particle-size aggregate has obvious arching to occur in funnel, leads to metaling free
Continuous whereabouts.Experiment proves that, during by funnel feed opening enlarged-diameter to 13cm（More than general funnel feed opening diameter）, rubble
Material particle diameter is more than the metaling of 25mm, in funnel due to particle between good interlocking form arching, lead to aggregate
Cannot freely continuously fall.
Secondly as other powder aggregates compared by metaling, all larger in terms of particle size and self gravitation, bone
Larger to the percussion of established accumulation body itself in material dropping process, that is, there is obvious peak clipping effect, fall afterwards
Metaling is larger to the destruction of accumulation body before, is difficult to make accumulation body form critical stacking states, therefore surveyed angle of repose
Error is larger.
In addition, in the accumulation body that metaling is formed, because aggregate size is larger, straight to the accumulation body bottom surface having been formed
When footpath carries out multiple different directions measurement, surveyed data differences are larger, and that is, good circle substantially can not be formed on accumulation body bottom
Or similar round cone state, therefore error is larger.Finally, due to above-mentioned measuring apparatus directly can not measure angle it is impossible to directly perceived
Reflection aggregate objectivity.
Utility model content
For solving above-mentioned problem present in angular measurement of stopping, stopped using improved slope tolling measurement in the utility model
The method of angle till, cancels funnel material-pouring device in the tolling measurement method of original slope.
In order to solve above-mentioned technical problem, the utility model proposes technical scheme below：One kind is used for measuring particle diameter larger
The easy device at metaling angle of repose, it includes base, and the right sidewall of described base is provided with batch turning valve, the left side of described base
Side is connected with smooth swash plate, is vertically installed with glass wall in the dead ahead of base, is provided with cunning between base and glass wall
Groove, described chute is slidably installed angled measuring appliance, and the center of described angle measurement equipment is provided with pointer, described
Pointer is matched with the graduation mark of angle measurement equipment outer ring reading angular numerical value.
Inclination angle between described smooth swash plate and base is 70-80 degree.
Described glass wall is made using transparent glass material.
The utility model has the advantages that：
1st, consider that metaling Action of Gravity Field is larger, for avoiding aggregate to produce obvious peak clipping to accumulation body top when falling
Effect, leads to be formed critical stacking states, this improvement specific operation process is：With spade, aggregate is scooped up, make aggregate evidence
The relatively near height place's free-falling in accumulation body top, it is to avoid apply starting force to aggregate, thus substantially reduce during aggregate whereabouts pair
The peak clipping effect at accumulation body top is it is ensured that the formation of accumulation body critical condition.
When the 2nd, due to research application slope tolling measurement angle of repose before, only refer to and be accumulated to slope with a certain amount of aggregate
Bottom forms accumulation body, but seldom has and study the critical stacking states that clear and definite aggregate is stacked into what state as aggregate, this reality
Test by observing and combining soil mechanics relevant knowledge of experimentation is piled up to metaling, make following improvement on its basis：
According to the definition at angle of repose, that is, when shot aggregate free-falling, it is in accumulation body during state of limit equilibrium
The maximum angle that the scope of freedom and horizontal plane are formed.This experiment in metaling dropping process, when observing aggregate in accumulation body
Top is stagnated, and not in the middle part of accumulation body and when slope angle falls, now aggregate does not impact to accumulation body horizontal section length, only
Pile up at accumulation body top, accumulation body highly continues to increase, when be accumulated to highly be not further added by when, that is, stopping batch turning, now regards
Pile up critical stacking states for metaling slope.
In addition to the critical accumulation body slope having been formed, in order to ensure more to fit surveyed angle of repose, it defines, in heap
At long-pending body horizontal segment slope angle, aggregate contact is lax, and the aggregate that accumulation body does not substantially constitute a threat to is purged, now institute
Survey accumulation body slope angle and be accurate angle of repose.
Brief description
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the utility model front view.
Fig. 2 is the utility model right view.
Fig. 3 is the utility model rearview.
Fig. 4 is the utility model top view.
In figure：Base 1, smooth swash plate 2, chute 3, angle measurement equipment 4, pointer 5, glass wall 6, batch turning valve 7, graduation mark 8.
Specific embodiment
Below in conjunction with the accompanying drawings embodiment of the present utility model is described further.
As Fig. 1-4, a kind of easy device for measuring particle diameter larger metaling angle of repose, it includes base 1, described bottom
The right sidewall of seat 1 is provided with batch turning valve 7, and the left lateral sides of described base 1 are connected with smooth swash plate 2, hangs down in the dead ahead of base 1
Glass wall 6 is directly installed, chute 3 is installed between base 1 and glass wall 6, described chute 3 is slidably installed angled
Measuring appliance 4, the center of described angle measurement equipment 4 is provided with pointer 5, the scale of described pointer 5 and angle measurement equipment 4 outer ring
Line 8 matches reading angular numerical value.
Further, the upper horizontal plane of the zero degree horizontal scale line of described angle measurement equipment 4 and base at grade,
Without going through troublesome mathematical conversion formula, you can directly measure the angle of repose of metaling accumulation body.
Further, described pointer 5 is used for, when critical accumulation body is formed, overlapping with accumulation body slope by pointer, can
Greatly facilitate the numerical value directly reading angle of repose.
Further, the inclination angle between described smooth swash plate 2 and base 1 is 70-80 degree.
Further, described glass wall 6 is made using transparent glass material.
Further, perpendicular to the glass wall 6 of base, can be replaced with transparent plastic or other transparent panels.
Further, described batch turning valve 7, for once piling up after experiment is measured, can directly batch turning it is not necessary to artificial shovel
Material, not only uses manpower and material resources sparingly, and is also convenient for carrying out repeatability accumulation measurement experiment.
The course of work of the present utility model and operation principle are：
In experimentation, for avoiding in metaling dropping process, accumulation body is caused serious peak clipping act on, so that can not
Form critical stacking states, with spade, the metaling of uniform mixing in advance is scooped up in experiment, make aggregate according to accumulation body top relatively
Closely highly freely fall it is ensured that the initial velocity that in metaling dropping process, aggregate has is less, it is to avoid aggregate fall when pair
Accumulation body top produces obvious peak clipping effect, the accuracy at impact angle of repose.
In metaling dropping process, when observing that aggregate stagnates at accumulation body top, no longer in the middle part of accumulation body and slope
When angle falls, now aggregate does not impact to accumulation body horizontal segment, only piles up at accumulation body top, and accumulation body highly continues to increase
Plus, when be accumulated to height be not further added by when, stop batch turning, be now considered as metaling accumulation body and be accumulated to critical stacking states.
Treat that the critical stacking states of accumulation body are formed, in order to ensure surveyed angle of repose more fit its definition, in accumulation body water
At flat section slope angle, aggregate contact is lax, and the aggregate that accumulation body is not stably substantially constituted a threat to is purged.
Parallel sliding angel measuring instrument, makes angel measuring instrument pointer inclined-plane external with critical accumulation overlap, and requires during alignment
Eyes will be looked squarely, and to reduce error, eyes look squarely the angle value shown in reading pointer planarea, simultaneously record data.Open position
In the batch turning valve of base, can directly remove the metaling on base, conveniently be measured next time.
By above-mentioned description, those skilled in the art completely can be without departing from this utility model technological thought
In the range of, carry out various change and modification all within protection domain of the present utility model.Of the present utility model most
Matters, belong to the common knowledge of those skilled in the art.
Claims (3)
1. a kind of easy device for measuring particle diameter larger metaling angle of repose it is characterised in that：It includes base（1）, institute
State base（1）Right sidewall be provided with batch turning valve（7）, described base（1）Left lateral sides be connected with smooth swash plate（2）, the bottom of at
Seat（1）Dead ahead be vertically installed with glass wall（6）, in base（1）With glass wall（6）Between chute is installed（3）, described cunning
Groove（3）On be slidably installed angled measuring appliance（4）, described angle measurement equipment（4）Center pointer is installed（5）,
Described pointer（5）With angle measurement equipment（4）The graduation mark of outer ring（8）Match reading angular numerical value.
2. a kind of easy device for measuring particle diameter larger metaling angle of repose according to claim 1, its feature exists
In：Described smooth swash plate（2）With base（1）Between inclination angle be 70-80 degree.
3. a kind of easy device for measuring particle diameter larger metaling angle of repose according to claim 1, its feature exists
In：Described glass wall（6）Made using transparent glass material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620922763.6U CN205957879U (en) | 2016-08-23 | 2016-08-23 | A simple and easy device for determining great metalling angle of repose of particle diameter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620922763.6U CN205957879U (en) | 2016-08-23 | 2016-08-23 | A simple and easy device for determining great metalling angle of repose of particle diameter |
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| CN205957879U true CN205957879U (en) | 2017-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620922763.6U Expired - Fee Related CN205957879U (en) | 2016-08-23 | 2016-08-23 | A simple and easy device for determining great metalling angle of repose of particle diameter |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107796288A (en) * | 2017-09-22 | 2018-03-13 | 浙江大学 | A kind of measure granular material internal friction angle and interface is quiet, simultaneous determination instrument of dynamic friction angle |
| RU187226U1 (en) * | 2018-10-22 | 2019-02-25 | Научно-производственная корпорация "Механобр-техника" (Акционерное общество) | Device for measuring the angle of repose of bulk material |
| CN110006782A (en) * | 2019-04-28 | 2019-07-12 | 西南大学 | A kind of rickle repose angle measurement device and measurement method |
| RU2699954C1 (en) * | 2019-04-09 | 2019-09-11 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет" | Device for determining static and dynamic friction of loose materials |
| RU2748565C1 (en) * | 2020-06-26 | 2021-05-26 | Федеральное государственное бюджетное научное учреждение "Всероссийский научно-исследовательский институт использования техники и нефтепродуктов в сельском хозяйстве" (ФГБНУ ВНИИТиН) | Apparatus for determining the angle of natural slope of flowing material |
| RU2748565C9 (en) * | 2020-06-26 | 2023-05-26 | Федеральное государственное бюджетное научное учреждение "Всероссийский научно-исследовательский институт использования техники и нефтепродуктов в сельском хозяйстве" (ФГБНУ ВНИИТиН) | Apparatus for determining the angle of natural slope of flowing material |
-
2016
- 2016-08-23 CN CN201620922763.6U patent/CN205957879U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107796288A (en) * | 2017-09-22 | 2018-03-13 | 浙江大学 | A kind of measure granular material internal friction angle and interface is quiet, simultaneous determination instrument of dynamic friction angle |
| CN107796288B (en) * | 2017-09-22 | 2020-07-14 | 浙江大学 | Combined tester for measuring internal friction angle and interface static and dynamic friction angles of granular materials |
| RU187226U1 (en) * | 2018-10-22 | 2019-02-25 | Научно-производственная корпорация "Механобр-техника" (Акционерное общество) | Device for measuring the angle of repose of bulk material |
| RU2699954C1 (en) * | 2019-04-09 | 2019-09-11 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет" | Device for determining static and dynamic friction of loose materials |
| CN110006782A (en) * | 2019-04-28 | 2019-07-12 | 西南大学 | A kind of rickle repose angle measurement device and measurement method |
| RU2748565C1 (en) * | 2020-06-26 | 2021-05-26 | Федеральное государственное бюджетное научное учреждение "Всероссийский научно-исследовательский институт использования техники и нефтепродуктов в сельском хозяйстве" (ФГБНУ ВНИИТиН) | Apparatus for determining the angle of natural slope of flowing material |
| RU2748565C9 (en) * | 2020-06-26 | 2023-05-26 | Федеральное государственное бюджетное научное учреждение "Всероссийский научно-исследовательский институт использования техники и нефтепродуктов в сельском хозяйстве" (ФГБНУ ВНИИТиН) | Apparatus for determining the angle of natural slope of flowing material |
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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: 20170215 Termination date: 20170823 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |