CN203587587U - Real-time online testing device of saturated rock frost heaving force - Google Patents
Real-time online testing device of saturated rock frost heaving force Download PDFInfo
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- CN203587587U CN203587587U CN201320621788.9U CN201320621788U CN203587587U CN 203587587 U CN203587587 U CN 203587587U CN 201320621788 U CN201320621788 U CN 201320621788U CN 203587587 U CN203587587 U CN 203587587U
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Abstract
The utility model discloses a real-time online testing device of saturated rock frost heaving force. The device comprises a hollow cylinder body, wherein the bottom of the cylinder body is fixedly connected with a stud; the stud extends outwards along the cylinder; a cylinder cover matched with the shape of the lateral wall of the cylinder body is arranged at the top of the cylinder body; the cylinder cover is arranged on the stud in a sleeved mode; a first cushion block, a force measurement sensor, a second cushion block and a nut are orderly arranged on the stud from bottom to top; the force measurement sensor is connected with an intelligent digital pressure gauge; a to-be-tested saturated rock of a hollow special crack is placed into the cylinder body after passing through the stud in a working state; the first cushion block, the force measurement sensor, the second cushion block and the nut are orderly connected with the stud in a matching manner, and then the cylinder body is placed in a low-temperature environment to be repeatedly frozen and thawed. The testing device provided by the utility model can carry out a frost heaving force test on the saturated rock sample by matching with other equipment, and can research the characteristics of mechanics, deformation, permeability, damage and the like on the rock.
Description
Technical field
The utility model relates to a kind of device, relates in particular to a kind of saturated rock frost-heave force proving installation.
Background technology
China is carrying out the construction of Tunnel Engineering on a large scale at present, in Han district subterranean tunnel, after tunnel excavation, the impact that changed by vertical shaft draught effect, climatic season, original protolith temperature field is changed, form new heating power exchange system, make tunnel surrounding form new freeze thawing circle.Under negative temperature condition, the water in rock mass build-ups ice, and produces and expands, and ice produces huge pressure to rock fracture; And when temperature gos up, ice-out becomes water droplet, moisture permeates the hole along body structure surface or pore path to inside configuration, and the pressure that acts on two walls is die-offed.The alternately appearance of freezing and melting of body structure surface and inner contained humidity, is called freeze thawing circulation.Under Freezing-Melting Condition, damage of rock is a complicated process, and it is not only subject to the impact of the factors such as rock texture, structure, physico-chemical property, and with temperature, freeze thawing temperature and initial damage state under closely related.Be mainly reflected in following two aspects: unfreezing has been aggravated the weathering of country rock on the one hand, the degree of crushing of country rock is increased.Under freeze thawing ringing, make the country rock within the scope of freeze thawing produce frost-heave force repeatedly on the other hand, this internal stress rock particles weak with respect to some consolidation strength has destruction, causes the local damage of rock, causes the destruction to tunnel.Proving installation about the frost-heave force under saturated rock multigelation condition was not also disclosed in prior art.
Utility model content
The problem existing according to prior art, the utility model discloses saturated rock frost-heave force proving installation, comprise: the cylinder body of a hollow, the bottom of described cylinder body is fixedly connected with double-screw bolt, described double-screw bolt stretches out along described cylinder body, the top of described cylinder body is provided with the cylinder cap matching with the sidewall shape of described cylinder body, described cylinder cover set is on described double-screw bolt, described double-screw bolt is also set with the first cushion block, force cell, the second cushion block and nut from top to bottom successively, is connected with intelligent digital tensimeter on described force cell;
Under duty: the saturated rock to be measured of hollow is positioned in described cylinder body through after double-screw bolt, after described the first cushion block, force cell, the second cushion block and nut are connected with double-screw bolt successively, this cylinder body is positioned over and under low temperature environment, carries out multigelation.
Described force cell is washer type force cell.
Owing to having adopted technique scheme, the saturated rock frost-heave force proving installation that the utility model provides, can carry out the frost-heave force test of saturated rock test specimen, coordinate other equipment to study characteristics such as full water frost heave rock mechanics, distortion, perviousness, damages.This device is chosen on-the-spot rock sample, is processed into the standard rock sample of hollow, and the crack of prefabricated various combination form, measures the size of the frost-heave force of rock sample in frozen-thaw process by this device.Mainly have the following advantages:
1. overcome conventional rock the scattering and disappearing of moisture in process of frost heave repeatedly, can the actual rock of real simulation water environment of living in, adopt special housing structure simultaneously, can actual response rock force boundary condition of living in;
2. adopt the special washer type force cell supporting with rock size, the use of this sensor makes the simple of whole device change, compact in structure, is convenient to realize.Adopt intelligent digital tensimeter real-time online survey to read simultaneously;
This device can real-time online measuring the variation of frost-heave force in damage rock frozen-thaw process, there is real-time on-line measurement.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, the accompanying drawing the following describes is only some embodiment that record in the application, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that the utility model cylinder block and cylinder cover is connected is front view.
Fig. 3 is that the utility model cylinder block and cylinder cover is connected is vertical view
In figure: 1. nut; 2. the first cushion block; 3. force cell; 4. cylinder cap; 5. cylinder body; 6. intelligent digital tensimeter; 7. saturated rock to be measured; 8. double-screw bolt; 9. the second cushion block.
Embodiment
For making the technical solution of the utility model and advantage clearer, below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is known to complete description:
Saturated rock frost-heave force proving installation as shown in Figure 1, comprises cylinder body 5, in the bottom of cylinder body 5, is fixedly connected with double-screw bolt 8, and this double-screw bolt 8 stretches out along described cylinder body 5, and the length of described double-screw bolt 8 is greater than the height of cylinder body 5.As shown in Figures 2 and 3, at the top of cylinder body 5, be provided with cylinder cap 4, described cylinder cap 4 is a lid with holes, and this cylinder cap 4 passes double-screw bolt 8 by hole and covers on cylinder body 5.On double-screw bolt, 8 are connected with the first cushion block 2, force cell 3, the second cushion block 9 and nut 1 from top to bottom in turn, on described force cell 3, are connected with intelligent digital tensimeter 6.Under duty: choose on-the-spot rock sample, be processed into the standard rock sample of hollow, and the crack of prefabricated various combination form, make saturated rock 7 to be measured, the size of this saturated rock 7 to be measured is less than the volume of cylinder body 5, this saturated rock 7 to be measured is sleeved on double-screw bolt 8, saturated rock 7 to be measured is positioned in cylinder body 5, cylinder cap 4 is covered on cylinder body 5, by the first cushion block 2, force cell 3, the second cushion block 9 and nut 1 are sleeved on double-screw bolt 8 from bottom to up successively, this cylinder body 5 is placed in and under low temperature environment, carries out multigelation experiment, utilize force cell 3 to measure the size of this saturated rock 7 to be measured frost-heave force in frozen-thaw process, utilize intelligent digital tensimeter 6 to carry out real-time data acquisition to frost-heave force data.
This saturated rock frost-heave force proving installation utilizes cylinder cap 4 and cylinder body 5 to be used in conjunction with can to prevent the scattering and disappearing of moisture of saturated rock 7 to be measured under multigelation condition.
Further, force cell 3 is washer type force cell, according to this frost-heave force proving installation size, makes this washer type force cell, and this sensor meets 0.5 grade of standard, serviceability temperature scope :-20 ℃～+ 60 ℃; Testing range 0～100kN; Measuring accuracy is in 0.5% scope.Intelligent digital tensimeter 6 has the advantages such as observing and controlling precision is high, strong anti-interference performance; Alarm range is set: 0001-9999MPa; Serviceability temperature and humidity: 0-55 ℃ ,≤80%RH.
Utilize this saturated rock frost-heave force proving installation to measure the size of saturated rock frost-heave force in frozen-thaw process, can also coordinate other device measuring saturated rocks saturated uniaxial compressive strength, damage quantitative, permeability and Freezing and melting Coefficient after freeze thawing mass loss rate, freeze thawing in frozen-thaw process, this device modern design, simple in structure, easy to operate can be by widespread use in construction work.
The above; it is only preferably embodiment of the utility model; but protection domain of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in; according to the technical solution of the utility model and utility model design thereof, be equal to replacement or changed, within all should being encompassed in protection domain of the present utility model.
Claims (2)
1. a saturated rock frost-heave force real-time online testing device, it is characterized in that: comprising: the cylinder body (5) of a hollow, the bottom of described cylinder body (5) is fixedly connected with double-screw bolt (8), described double-screw bolt (8) stretches out along described cylinder body (5), the top of described cylinder body (5) is provided with the cylinder cap (4) matching with the sidewall shape of described cylinder body (5), described cylinder cap (4) is sleeved on described double-screw bolt (8), described double-screw bolt (8) is also set with the first cushion block (2) from top to bottom successively, force cell (3), the second cushion block (9) and nut (1), on described force cell (3), be connected with intelligent digital tensimeter (6).
2. a kind of saturated rock frost-heave force real-time online testing device according to claim 1, is further characterized in that: described force cell (3) is washer type force cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320621788.9U CN203587587U (en) | 2013-10-08 | 2013-10-08 | Real-time online testing device of saturated rock frost heaving force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320621788.9U CN203587587U (en) | 2013-10-08 | 2013-10-08 | Real-time online testing device of saturated rock frost heaving force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203587587U true CN203587587U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320621788.9U Expired - Fee Related CN203587587U (en) | 2013-10-08 | 2013-10-08 | Real-time online testing device of saturated rock frost heaving force |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764665A (en) * | 2015-02-28 | 2015-07-08 | 西安科技大学 | Rock-like test piece crack water injection method for frost heave test |
| CN106248491A (en) * | 2016-07-25 | 2016-12-21 | 黑龙江科技大学 | Damage of rock and Permeation Test System |
| CN108956412A (en) * | 2018-04-12 | 2018-12-07 | 河海大学 | A kind of method of the cold area's rock freezing-thawing damage degree of determining High aititude |
| CN110596177A (en) * | 2019-08-21 | 2019-12-20 | 西南交通大学 | Rock tunnel frozen-expansion force model based on rock-water-ice force in-situ test |
| CN113898412A (en) * | 2021-10-13 | 2022-01-07 | 中铁十九局集团有限公司 | Freeze-induced expansion force monitoring method based on subway horizontal freezing |
| CN114184635A (en) * | 2021-12-21 | 2022-03-15 | 河北交通职业技术学院 | Seasonal frozen soil area tunnel frozen-expansion force simulation test device and use method thereof |
-
2013
- 2013-10-08 CN CN201320621788.9U patent/CN203587587U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764665A (en) * | 2015-02-28 | 2015-07-08 | 西安科技大学 | Rock-like test piece crack water injection method for frost heave test |
| CN104764665B (en) * | 2015-02-28 | 2017-10-13 | 西安科技大学 | A kind of rock frost heave test rocks test specimen crack water injection method |
| CN106248491A (en) * | 2016-07-25 | 2016-12-21 | 黑龙江科技大学 | Damage of rock and Permeation Test System |
| CN108956412A (en) * | 2018-04-12 | 2018-12-07 | 河海大学 | A kind of method of the cold area's rock freezing-thawing damage degree of determining High aititude |
| CN110596177A (en) * | 2019-08-21 | 2019-12-20 | 西南交通大学 | Rock tunnel frozen-expansion force model based on rock-water-ice force in-situ test |
| CN113898412A (en) * | 2021-10-13 | 2022-01-07 | 中铁十九局集团有限公司 | Freeze-induced expansion force monitoring method based on subway horizontal freezing |
| CN113898412B (en) * | 2021-10-13 | 2023-11-10 | 中铁十九局集团有限公司 | Freeze-swelling force monitoring method based on subway horizontal freezing |
| CN114184635A (en) * | 2021-12-21 | 2022-03-15 | 河北交通职业技术学院 | Seasonal frozen soil area tunnel frozen-expansion force simulation test device and use method thereof |
| CN114184635B (en) * | 2021-12-21 | 2023-09-08 | 河北交通职业技术学院 | Seasonal frozen soil area tunnel frost heaving force simulation test device and application method thereof |
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| 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: 20140507 Termination date: 20141008 |
|
| EXPY | Termination of patent right or utility model |