CN109457683A - For loading test device of the beded rock mass under rain penetration - Google Patents
For loading test device of the beded rock mass under rain penetration Download PDFInfo
- Publication number
- CN109457683A CN109457683A CN201811555403.7A CN201811555403A CN109457683A CN 109457683 A CN109457683 A CN 109457683A CN 201811555403 A CN201811555403 A CN 201811555403A CN 109457683 A CN109457683 A CN 109457683A
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- rock mass
- beded
- braced frame
- rain penetration
- test device
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- 239000011435 rock Substances 0.000 title claims abstract description 92
- 230000035515 penetration Effects 0.000 title claims abstract description 34
- 238000012360 testing method Methods 0.000 title claims abstract description 30
- 238000001764 infiltration Methods 0.000 claims abstract description 29
- 230000008595 infiltration Effects 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000005507 spraying Methods 0.000 claims abstract description 7
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 238000012423 maintenance Methods 0.000 claims description 11
- 210000000416 exudates and transudate Anatomy 0.000 claims description 3
- 239000007787 solid Substances 0.000 abstract description 9
- 230000006835 compression Effects 0.000 abstract description 6
- 238000007906 compression Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 6
- 239000002245 particle Substances 0.000 abstract description 6
- 238000004162 soil erosion Methods 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000002474 experimental method Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000007646 directional migration Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000000105 evaporative light scattering detection Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
- E02D1/02—Investigation of foundation soil in situ before construction work
- E02D1/022—Investigation of foundation soil in situ before construction work by investigating mechanical properties of the soil
Abstract
The present invention provides a kind of loading test devices for beded rock mass under rain penetration, including braced frame, analog unit, rainwater spraying mechanism, force jack, dial gauge, strainer and catch basin；Analog unit is placed in braced frame, and beded rock mass is equipped in analog unit；Rainwater spraying mechanism include the infiltration case being placed at the top of beded rock mass and with the water inlet pipe that is connected to of infiltration case；The pedestal of force jack is installed in braced frame, the downwardly directed infiltration case of piston rod；Dial gauge upper boom is fixed in braced frame, and gauge head is directed toward beded rock mass；Screen support is in the bottom of beded rock mass；Catch basin is set to the lower section of strainer.Detection device provided by the invention, influence of the field rainwater to the bearing capacity of beded rock mass is realized by the infiltration of Simulated rainwater, the solid particles of rock quality that infiltration is brought out is determined by experiment, the relationship between quality after soil erosion is met with to establish different compression strength and sample, provides foundation for field geotechnical engineering construction.
Description
Technical field
The invention belongs to rock mass detection technique fields, are to be related to one kind to seep for beded rock mass in rainwater more specifically
Loading test device under thoroughly.
Background technique
As the traffic in China rapidly develops, building for outer road and rail out of office is increasing.Railway construction highway is most
The problem of rock mass aspect will be encountered, the especially lower beded rock mass of bearing capacity.Beded rock mass is widespread in nature,
Level is a kind of construction face formed by geologic processes such as mineral deposition, intrusion or directional migrations.Coal measure strata is mostly bedded rock
Body, the physico-mechanical properties for forming each rock stratum of roadway surrounding rock are often different, and even difference is very big sometimes, and mechanical property is very multiple
It is miscellaneous.Since beded rock mass is a kind of extremely complex discontinuous material, is acted on and being formed by sedimentary rock, the spy with soft and hard alternation
Sign, can not conveniently measure the bearing capacity of beded rock mass, it is even more impossible to test stratiform under the influence of rainwater in construction
The bearing capacity of rock mass will cause the waste of security risk and material in this way.
Summary of the invention
The purpose of the present invention is to provide a kind of loading test devices for beded rock mass under rain penetration, it is intended to
Solve the technical issues of rain penetration bearing capacity existing in the prior art is unable to test.
To achieve the above object, the technical solution adopted by the present invention is that: provide it is a kind of for beded rock mass in rain penetration
Under loading test device, comprising:
Braced frame；
Analog unit is placed in the braced frame, the side wall being at least sequentially connected there are four tool, in the analog unit
Equipped with beded rock mass；
Rainwater spraying mechanism, including be placed in the infiltration case at the top of layered rock mass for seep water to layered rock mass with
The water inlet pipe being connected to the infiltration case, the water inlet pipe supply water by water pump into the infiltration case；
Exert a force jack, and pedestal is installed in the braced frame, and the downwardly directed infiltration case of piston rod passes through
Infiltration case applies pressure to layered rock mass；
Dial gauge, upper boom are fixed in the braced frame, and gauge head is directed toward layered rock mass, described for detecting
The vertical displacement of beded rock mass；
Strainer is supported in the bottom of layered rock mass, is used for rain penetration, the surrounding of the strainer and the simulation box
The bottom of body is connect with the braced frame；And
Catch basin is set to the lower section of the strainer, for collecting rainwater and exudate.
Further, equipped with multiple force jack being uniformly distributed at the top of layered rock mass.
Further, the force jack is motor-driven jack.
Further, several permeable holes are uniformly provided on the bottom plate that the infiltration case is contacted with layered rock mass.
Further, the dial gauge is digital display centimeter.
Further, the catch basin surrounding is installed in the braced frame.
Further, four side wall detachable connections.
Further, multiple stability maintenance jack are respectively equipped with outside the surrounding side wall of the analog unit, the stability maintenance is very heavy
The piston rod direction on top is simultaneously vertical with the side wall, and the pedestal of the stability maintenance jack is connect with the braced frame.
Further, it is additionally provided between at least one described side wall and the braced frame for measuring layered rock mass
The dial gauge of horizontal displacement.
It is provided by the present invention for the beneficial effect of loading test device of the beded rock mass under rain penetration: benefit
With force jack and rainwater spraying mechanism, bearing capacity of the beded rock mass under rain penetration is detected, the infiltration of Simulated rainwater is passed through
It realizes influence of the field rainwater to the bearing capacity of beded rock mass thoroughly, the solid particles of rock matter that infiltration is brought out is determined by experiment
Amount provides to establish the relationship between quality after different compression strength and sample experience soil erosion for field geotechnical engineering construction
Foundation.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the structure provided in an embodiment of the present invention for loading test device of the beded rock mass under rain penetration
Schematic diagram；
Fig. 2 is the overlooking structure diagram of Fig. 1.
Wherein, each appended drawing reference in figure:
1- braced frame；2- catch basin；3- beded rock mass；4- strainer；5- stability maintenance jack；6- dial gauge；7- water inlet pipe；
8- infiltration case；9- force jack.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
Also referring to Fig. 1 and Fig. 2, now to the bearing capacity provided by the present invention for beded rock mass 3 under rain penetration
Detection device is illustrated.It is described be used for loading test device of the beded rock mass 3 under rain penetration, including braced frame 1,
Analog unit, rainwater spraying mechanism, force jack 9, dial gauge 6, strainer 4 and catch basin 2；Analog unit is placed in braced frame
In 1, at least have there are four the side wall being sequentially connected, analog unit is interior to be equipped with beded rock mass 3；Rainwater spraying mechanism includes being placed in layer
The infiltration case 8 for being used to seep water to beded rock mass 3 at the top of shape rock mass 3 and the water inlet pipe 7 being connected to infiltration case 8, water inlet pipe 7 is by water
It pumps and supplies water into infiltration case 8；The pedestal of force jack 9 is installed in braced frame 1, the downwardly directed infiltration case 8 of piston rod,
Apply pressure to beded rock mass 3 by infiltration case 8；Dial gauge 6, upper boom are fixed in braced frame 1, and gauge head is directed toward stratiform
Rock mass 3, for detecting the vertical displacement of beded rock mass 3；Strainer 4 is supported in the bottom of beded rock mass 3, is used for rain penetration, filter
The surrounding of net 4 and the bottom of analog unit are connect with braced frame 1；Catch basin 2 is set to the lower section of strainer 4, for collecting
Rainwater and exudate.
Provided by the present invention for loading test device of the beded rock mass 3 under rain penetration, compared with prior art,
The bearing capacity above rock mass is simulated by force jack 9, realizes field rainwater to bedded rock by the infiltration of Simulated rainwater
The solid particles of rock quality that brings out of infiltration is determined by experiment in the influence of the bearing capacity of body 3, thus establish different compression strength with
Sample meets with the relationship between quality after soil erosion, provides foundation for field geotechnical engineering construction.
Also referring to Fig. 1 to Fig. 2, as the bearing capacity provided by the present invention for beded rock mass 3 under rain penetration
A kind of specific embodiment of detection device, equipped with multiple force jack 9 for being uniformly distributed in 3 top of beded rock mass.It is trying
When testing, change the pressure applied by preset requirement, simulates the quality of the solid particles of rock of the rain penetration in the case of different bearer power.
Wherein, one kind as the loading test device provided by the present invention for beded rock mass 3 under rain penetration
Specific embodiment is uniformly provided with several permeable holes on the bottom plate that contacts with beded rock mass 3 of infiltration case 8, and permeable hole is being schemed
In be not shown.
Optionally, one as the loading test device provided by the present invention for beded rock mass 3 under rain penetration
Kind of specific embodiment, dial gauge 6 are digital display centimeter, at one's leisure when observe vertical displacement.
Referring to Fig. 1, as the loading test device provided by the present invention for beded rock mass 3 under rain penetration
A kind of specific embodiment, 2 surrounding of catch basin are installed in braced frame 1, and rainwater is flowed into collection from the infiltration of strainer 4 by rock mass
In sink 2, the solid particles of rock carried through rainwater is also collected into catch basin 2, is dried, be can be obtained to the solid in catch basin 2
The mass of object penetrated.
Referring to Fig. 1, as the loading test device provided by the present invention for beded rock mass 3 under rain penetration
A kind of specific embodiment, four side wall detachable connections.The mode of detachable connection is using hinge connection, inserts
The mode for connecing or being connected by screw bolts.
Refering to fig. 1, one as the loading test device provided by the present invention for beded rock mass 3 under rain penetration
The surrounding side wall of kind specific embodiment, the analog unit is respectively equipped with multiple stability maintenance jack 5 outside, stability maintenance jack 5
Piston rod direction is simultaneously vertical with side wall, and the pedestal of stability maintenance jack 5 is connect with the braced frame 1.Stability maintenance jack 5 provides side
To pressure stabilizing, displacement of the rock mass in the case where force jack 9 is acted on to two sides, and the restraining force of simulation rock mass surrounding are resisted, is provided
Than more actually experimental enviroment.
Referring to Fig. 1, as the loading test device provided by the present invention for beded rock mass 3 under rain penetration
A kind of specific embodiment is additionally provided with for measuring layered 3 horizontal position of rock mass between at least one side wall and braced frame 1
The dial gauge of shifting.
The test process for carrying out the loading test under rain penetration using the present apparatus is as follows, including the following steps:
The first step, assembled braced frame 1, installation rain penetration mechanism, force jack 9 and pressure stabilizing jack；
Second step places suitable simulation beded rock mass 3 according to engineering practice in braced frame 1；
Third step starts monitoring system, by adjusting each jack, keeps Centigrade scale and pressure detecting system automatic reading complete
At detection system；
4th step changes the size of jack, obtains vertical displacement, the horizontal displacement of different bearer power Layered rock mass 3
And the quality of the solid particles of rock penetrated, through the soil erosion quality that being calculated under different forced areas and compression strength it
Between relationship, the simulation of the stress condition for the beded rock mass 3 that can be used under different engineering specifications.
As shown in the table, different force jack F, vertical displacement Δ y, horizontal displacement Δ x and the solid penetrated are measured
The quality m of rock.
| Apply pressure | F1 | F2 | F3 |
| Horizontal displacement | Δx1 | Δx2 | Δx3 |
| Vertical displacement | Δy1 | Δy2 | Δy3 |
| Rock-mass quality after soil erosion | m1 | m2 | m3 |
| Compression strength | σ1 | σ2 | σ3 |
Calculation formula is as follows:
m1=m- Δ m1
Δm1=mG×(1+w)
m2=m- Δ m2, by above-mentioned formula, σ can be calculated2；
The pressure for changing force jack, can be obtained corresponding soil erosion quality and compression strength under different bearer power
Between relationship.
In formula: A is forced area；W is the moisture content for simulating beded rock mass；mGFor the matter of the solid drying in catch basin
Amount.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (9)
1. being used for loading test device of the beded rock mass under rain penetration characterized by comprising
Braced frame；
Analog unit is placed in the braced frame, the side wall being at least sequentially connected there are four tool, is equipped in the analog unit
Beded rock mass；
Rainwater spraying mechanism, including the infiltration case that is placed at the top of layered rock mass for seeping water to layered rock mass and with institute
The water inlet pipe of infiltration case connection is stated, the water inlet pipe supplies water by water pump into the infiltration case；
Exert a force jack, and pedestal is installed in the braced frame, and the downwardly directed infiltration case of piston rod passes through infiltration
Case applies pressure to layered rock mass；
Dial gauge, upper boom are fixed in the braced frame, and gauge head is directed toward layered rock mass, layered for detecting
The vertical displacement of rock mass；
Strainer is supported in the bottom of layered rock mass, is used for rain penetration, the surrounding of the strainer and the analog unit
Bottom is connect with the braced frame；And
Catch basin is set to the lower section of the strainer, for collecting rainwater and exudate.
2. being used for loading test device of the beded rock mass under rain penetration as described in claim 1, it is characterised in that: set
There are multiple force jack being uniformly distributed at the top of layered rock mass.
3. being used for loading test device of the beded rock mass under rain penetration as described in claim 1, it is characterised in that: institute
Stating force jack is motor-driven jack.
4. being used for loading test device of the beded rock mass under rain penetration as described in claim 1, it is characterised in that: institute
It states and is uniformly provided with several permeable holes on the bottom plate that infiltration case is contacted with layered rock mass.
5. being used for loading test device of the beded rock mass under rain penetration as described in claim 1, it is characterised in that: institute
Stating dial gauge is digital display centimeter.
6. being used for loading test device of the beded rock mass under rain penetration as described in claim 1, it is characterised in that: institute
Catch basin surrounding is stated to be installed in the braced frame.
7. being used for loading test device of the beded rock mass under rain penetration as described in claim 1, it is characterised in that: four
A side wall detachable connection.
8. it is used for loading test device of the beded rock mass under rain penetration as claim 1-7 is described in any item, it is special
Sign is: multiple stability maintenance jack, the piston rod of the stability maintenance jack are respectively equipped with outside the surrounding side wall of the analog unit
It is directed toward and vertical with the side wall, the pedestal of the stability maintenance jack is connect with the braced frame.
9. being used for loading test device of the beded rock mass under rain penetration as claimed in claim 8, it is characterised in that: extremely
The dial gauge for measuring layered rock mass horizontal displacement is additionally provided between a few side wall and the braced frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811555403.7A CN109457683B (en) | 2018-12-19 | 2018-12-19 | Bearing capacity detection device for layered rock mass under rainwater penetration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811555403.7A CN109457683B (en) | 2018-12-19 | 2018-12-19 | Bearing capacity detection device for layered rock mass under rainwater penetration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109457683A true CN109457683A (en) | 2019-03-12 |
| CN109457683B CN109457683B (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811555403.7A Active CN109457683B (en) | 2018-12-19 | 2018-12-19 | Bearing capacity detection device for layered rock mass under rainwater penetration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432863A (en) * | 2020-11-19 | 2021-03-02 | 石家庄铁道大学 | Device and method for testing vertical bending resistance of geocell sheet |
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| CN109457683B (en) | 2024-04-26 |
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