CN105509951A - Compression type remolded soil pore pressure testing device - Google Patents
Compression type remolded soil pore pressure testing device Download PDFInfo
- Publication number
- CN105509951A CN105509951A CN201610020281.6A CN201610020281A CN105509951A CN 105509951 A CN105509951 A CN 105509951A CN 201610020281 A CN201610020281 A CN 201610020281A CN 105509951 A CN105509951 A CN 105509951A
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- CN
- China
- Prior art keywords
- soil
- soil body
- pore pressure
- testing device
- test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002689 soil Substances 0.000 title claims abstract description 42
- 238000012360 testing method Methods 0.000 title claims abstract description 25
- 239000011148 porous material Substances 0.000 title claims abstract description 7
- 230000006835 compression Effects 0.000 title claims description 4
- 238000007906 compression Methods 0.000 title claims description 4
- 238000013461 design Methods 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 3
- 238000009533 lab test Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 239000004576 sand Substances 0.000 description 5
- 238000007569 slipcasting Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000011888 foil Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910052571 earthenware Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000012812 general test Methods 0.000 description 1
- -1 loess Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
Provided is a testing device for soil mass grouting laboratory tests, especially a remolded soil pore pressure testing device. The remolded soil pore pressure testing device adopts the design of a telescopic round bar, pasting type sensor planes are reserved on the surroundings at the position of middle-lower part, and a wiring hole is reserved in the round bar, so that wires can be externally connected with instruments.
Description
Art
The present invention relates to a kind of pore pressure test of grouting in soil mass shop experiment proving installation, particularly manipulated soil.
Background technology
The research of slip casting shop experiment is long-standing, and the scientist of Germany, Austria, USSR (Union of Soviet Socialist Republics) has carried out a lot of original trial, generally makes desirable model of fissuration by concrete block, steel plate or grooved ring, controls slurries character and grouting pressure.Domestic scientist also carried out many practices, Southwest Jiaotong University-Zhang Baowen
[1], Tongji University, Central South University-Yang Ping
[8], science and technology shaft building research institute-Gao hilllock, the world is flourish
[9], coal science institute-Zhou Xingwang
[6], Central South University-Yang Xiuzhu
[3]deng the research all once doing correlation test device, mainly contain plate, tubular type and square groove type three class, the empirical equation under utilizing certain control device can obtain different grouting pressure and slurries character condition.
The device adopted for the measurement of soil pressure in instrument and slurry pressure mostly is external tensimeter, slurry outlet is by sebific duct Bonding pressure or stress test device, or when instrumentation and built-in taseometer by conputer controlled, the third is then after soil model makes, carry out perforate or again lay taseometer carrying out measuring and controlling.First two mode reliability is high, and be easy to operation, but have fixing requirement for measuring position, specific position measurement has difficulties, and the third is convenient, flexible, but easily changes the original character of the soil body, affects comparatively large, be more suitable for sand test by operant level.In making manipulated soil process, all there is certain conflict with the combination of above surveying instrument in the control of soil body basic parameter (severe, water percentage, grating etc.).
List of references:
[1] Zhang Baowen. high-speed railway soft clay foundation compaction grouting and fracture grouting experimental study [D]. Chengdu: Southwest Jiaotong University, 2013.
[2] Yan Changhe, Xiang Keming, Qiu Yanjun. the roadbed osmotic grouting based on different diffusion way simulates [J]. and railway construction .2008 (11): 40-42.
[3] Yang Xiuzhu. slurries diffusion theory and experimental study [D] under force model effect. Changsha: Central South University, 2005.
[4] Yang meter Jia, He Yongnian, Chen Mingxiong. crack rock network slip casting percolation law [J]. Journal of Hydraulic Engineering .2001,32 (7): 41-46.
[5] Yang meter Jia, Chen Mingxiong, He Yongnian. Grouting Seepage in Rockmass simulation experiment study [J]. Experimental Mechanics .2001,16 (1): 105-112.
[6] Xu Zhipeng. crack grouting simulation test progress [J]. well construction technology .2012,33 (6): 26-29.
[7] Ma Lina, Yan Songhong. the design of fracture grouting simulation test and engineer applied [J]. subgrade engineering .2010 (5): 67-69.
[8] Yang Ping, Tang Yiqun, Peng Zhenbin, etc. grouting simulation test research [J] in sand ovum (gravel) rock layers. Geotechnical Engineering journal .2006,28 (12): 2134-2138.
[9] Gao Gangrong, An Xuliang, Chen Hui, etc. indoor dynamic water grouting simulation test platform development and application [J]. well construction technology .2011,32 (1/2): 32-34.
[10] Xia little Liang. injecting paste material proportion optimizing and grouting test are studied [D]. Huainan: Anhui University of Science and Technology, 2011.
[11] Wang Yixin, Li Huamao. the present Research [J] of grouting simulation test. Henan science and technology .2008 (9): 74-75.
[12] Ge Jialiang, Lu Shiliang. the research [J] of grouting simulation test and application thereof. Geotechnical Engineering journal .1997,19 (3): 28-32.
Summary of the invention
The object of invention is
Carry out in simulation grouting test process, carrying out Rock And Soil internal stress change test; Inside soil body is placed in and the soil body compresses jointly, the Parameters variation such as measurement resistance to shear of soil, pore water pressure when making heterogeneous soil indoor model.
The technical matters solved:
Existing conventional external pressure test device reliability is high, and be easy to operation, but have fixing requirement for measuring position, specific position measurement has difficulties.Sand test is practical, in making manipulated soil process, all there is certain conflict with the combination of above surveying instrument in the control of soil body basic parameter (severe, water percentage, grating etc.), the combination of surveying instrument and the soil body is generally difficult to the original state characteristic in the face of keeping in touch.This test unit can be used for that perforate is embedding measures, also can be pre-buried in manipulated soil manufacturing process, and common pressurized, keeps in touch face original state characteristic.
One, the general test method of grouting in soil mass test
When carrying out the test of general grouting in soil mass, needing before carrying out grouting in soil mass test to carry out stress determination to inside soil body, first should carry out perforate to the soil body, instrument is put into perforate, fill up fine sand around, carry out sealing of hole with cement or cotton.
Two, heterogeneous soil model pore pressure measures
1. coordinate " heterogeneous soil grouting simulation test device " to use, under pressure gauge being placed in the system soil framework assembled in advance, put into the native bucket of system.
2. deployed loose earth is evenly imported overpressure meter height in earthenware processed, vibrate and tamp, remove framework, again vibrate evenly, smooth native face.
3. cover plate is placed on soil body surface, is densified to specific thicknesses (may not exceed manometric solid height) with lifting jack.Carry out grouting test with reference to normal grouting test operation steps and read data subsequently.
The advantage of invention and good effect
1. soil body manufacturing process is simple, and 1-2 people gets final product complete operation; Applicability is strong, is applicable to the making of all kinds of soil models such as sand, loess, clay, sand pebble layer and complex earth filling.
2. slip casting process spread is strong, both can Non-follow control slip casting process, also can increase information collecting device and carry out computing machine control.
3. apparatus structure is simple, cleaning for convenience detach and maintenance; The integrality of soil structures is guaranteed by the reasonable dismounting of slip casting bucket.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is test unit perspective wire frame structural map.
Fig. 2 is test unit cut-away view.
Fig. 3 is test unit structural map.A-front elevation, b-side view, c-vertical view.
Fig. 4 is test unit design sketch.
1-joint pin, 2-foil gauge/induction meter, 3-spring, 4-urceolus, 5-inner core, 6-lead channels
Embodiment:
under device is arranged on coupling shaft, joint pin on it (1) is connected with coupling shaft and uses as pole, be vertically placed in ad-hoc location, then carry out banketing and compacting operation.
inside soil body stress can be measured at inside and outside stickup foil gauge in foil gauge/induction meter (2) position.
wire is stretched out by the lead channels (6) of device inside, is laid in the soil body and stretches out instrument connection strainmeter/receiver.
soil body compressed thickness can not exceed the half of height of instrument, prevents from causing device to damage because of spring (3) stroke deficiency or causing soil body decrement not enough.
Claims (3)
1. the pore pressure proving installation of a soil body shop experiment proving installation, particularly manipulated soil.
2. test unit adopts the scalable design of round bar, and in position, middle and lower part surrounding reserved stickup inductor plane, rod member internal reservation routing hole is for wire external equipment.
3. proving installation according to claim 1, it is characterized in that: in round bar, adopt high-compressibility spring, connect with coupling shaft, connecting link and make the design attitude that framework is embedded into soil model, part beyond withdrawing device after banketing, pole can not resilience with utilizing soil body lateral stress to ensure after the common forced compression of the soil body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610020281.6A CN105509951B (en) | 2016-01-13 | 2016-01-13 | A kind of compression manipulated soil hole compression testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610020281.6A CN105509951B (en) | 2016-01-13 | 2016-01-13 | A kind of compression manipulated soil hole compression testing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105509951A true CN105509951A (en) | 2016-04-20 |
| CN105509951B CN105509951B (en) | 2019-01-15 |
Family
ID=55718096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610020281.6A Expired - Fee Related CN105509951B (en) | 2016-01-13 | 2016-01-13 | A kind of compression manipulated soil hole compression testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105509951B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4332160A (en) * | 1979-04-19 | 1982-06-01 | Baragar Harold A | Penetrometer |
| CN2379797Y (en) * | 1998-03-12 | 2000-05-24 | 中国建筑科学研究院建筑结构研究所 | Resiliometer for measuring strength of strong concrete |
| CN201096561Y (en) * | 2007-07-03 | 2008-08-06 | 中国航天科技集团公司第四研究院第四十四研究所 | Strain type square tube pressure sensor |
| CN103485811A (en) * | 2013-09-26 | 2014-01-01 | 山东科技大学 | Detection method for axial force and bending moment of anchor rod and detecting anchor rod |
| CN103528731A (en) * | 2013-10-25 | 2014-01-22 | 中国矿业大学 | Coal mine paste filler online monitoring system based on optical fiber grating sensing |
| CN204495505U (en) * | 2015-02-05 | 2015-07-22 | 中交三公局第一工程有限公司 | Grouting pressure pick-up unit |
| CN105181190A (en) * | 2015-10-23 | 2015-12-23 | 长安大学 | Device for testing mechanical characteristic of tunnel locking anchor pipe and testing method for device |
-
2016
- 2016-01-13 CN CN201610020281.6A patent/CN105509951B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4332160A (en) * | 1979-04-19 | 1982-06-01 | Baragar Harold A | Penetrometer |
| CN2379797Y (en) * | 1998-03-12 | 2000-05-24 | 中国建筑科学研究院建筑结构研究所 | Resiliometer for measuring strength of strong concrete |
| CN201096561Y (en) * | 2007-07-03 | 2008-08-06 | 中国航天科技集团公司第四研究院第四十四研究所 | Strain type square tube pressure sensor |
| CN103485811A (en) * | 2013-09-26 | 2014-01-01 | 山东科技大学 | Detection method for axial force and bending moment of anchor rod and detecting anchor rod |
| CN103528731A (en) * | 2013-10-25 | 2014-01-22 | 中国矿业大学 | Coal mine paste filler online monitoring system based on optical fiber grating sensing |
| CN204495505U (en) * | 2015-02-05 | 2015-07-22 | 中交三公局第一工程有限公司 | Grouting pressure pick-up unit |
| CN105181190A (en) * | 2015-10-23 | 2015-12-23 | 长安大学 | Device for testing mechanical characteristic of tunnel locking anchor pipe and testing method for device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105509951B (en) | 2019-01-15 |
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