CN104251790A - Self-water injection type rock and soil sample saturator - Google Patents

Self-water injection type rock and soil sample saturator Download PDF

Info

Publication number
CN104251790A
CN104251790A CN201410526914.1A CN201410526914A CN104251790A CN 104251790 A CN104251790 A CN 104251790A CN 201410526914 A CN201410526914 A CN 201410526914A CN 104251790 A CN104251790 A CN 104251790A
Authority
CN
China
Prior art keywords
cylinder
water
saturated
valve
overflow
Prior art date
Application number
CN201410526914.1A
Other languages
Chinese (zh)
Other versions
CN104251790B (en
Inventor
王菁莪
刘清秉
崔德山
项伟
Original Assignee
中国地质大学(武汉)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 中国地质大学(武汉) filed Critical 中国地质大学(武汉)
Priority to CN201410526914.1A priority Critical patent/CN104251790B/en
Publication of CN104251790A publication Critical patent/CN104251790A/en
Application granted granted Critical
Publication of CN104251790B publication Critical patent/CN104251790B/en

Links

Abstract

The invention relates to a self-water injection type rock and soil sample saturator. The self-water injection type rock and soil sample saturator is characterized by comprising a water storage tank, a water inlet main pipe, flow micro-adjusting valves, saturated cylinders, water outlet branch pipes, a water outlet main pipe, an overflow cylinder and a vacuum pump; one end of the water inlet main pipe is communicated with the water outlet of the water storage tank; a saturated cylinder water inlet is formed in the bottom of each saturated cylinder, and communicated with the water inlet main pipe through each flow micro-adjusting valve; a saturated cylinder water outlet is formed in the upper end of each saturated cylinder, and communicated with the water outlet main pipe through each water outlet branch pipe; one end of the water outlet main pipe is communicated with the water inlet of the overflow cylinder, and the other end of the water outlet main pipe is a sealed end; an air outlet is connected with an air inlet of the vacuum pump through a vacuum pumping pipe. According to the invention, air in a rock and soil sample is always communicated with an outside vacuum environment in a saturation process to facilitate air exhaust, so that the saturated effect of the sample is good, and the air exhaust saturation time is obviously lowered, saturated work of different-batch samples can be continuously carried out, and water can be effectively saved.

Description

Automatic water-filling formula ground sample saturator

Technical field

The present invention relates to a kind of ground sample to carry out noting water saturated device, be specifically related to a kind of Automatic water-filling formula ground sample saturator.This device is mainly used in the water filling saturation process in ground sample physical mechanics test early stage, also can be used for the saturated operation of other similar materials, can promote the use of the rock-soil mechanics laboratory of each Geotechnical Engineering related scientific research institutes and enterprises and institutions.

Background technology

The shop experiment of rock and soil body sample is the main path obtaining its physico-mechanical properties.Any geotechnical engineering design and analytical work all must be based upon accurately on ground sample physical and mechanical parameter, and therefore carrying out shop experiment is accurately the prerequisite solving Practical Project problem.The saturated principle of effective stress that the main theoretical basis of current Geotechnical Engineering mechanical analysis proposes for Tai Shaji, so every mechanical test is first saturated by sample before mostly all requiring test in existing ground shop experiment specification, as permeability test, consolidation test, direct shear test, triaxial compression test etc.Sample degree of saturation is remarkable on the impact of experimental result, and therefore, the saturation history of ground sample and result seem particularly important.

Now widely used ground sample saturation device all designs and produces according to the relevant provision of Standard for test methods of earthworks (GB/T50123-1999), and this specification is the infiltrative size saturation process that to define immersion saturated method, kapillary saturation method different with saturation method three kinds of bleeding per sample.The sample larger for infiltration coefficient adopts immersion saturated method, and infiltration coefficient is greater than 10 -4the particulate sample of cm/s should adopt kapillary saturated, and infiltration coefficient is less than 10 -4the sample of cm/s should adopt saturation method of bleeding.

During the test of immersion saturated method, directly sample is immersed in water that soil sample is absorbed water naturally is saturated.Kapillary saturation method sample is put into the water surface to be no less than two round the clock a little less than the water tank of sample surfaces, sample absorbed water under self capillary attraction effect saturated.Saturation method of bleeding is that sample is put into sealed vacuum cylinder, first extracts the air in vacuum reservoir out (pumpdown time is no less than 1 hour), subsequently to water filling in vacuum reservoir until flood sample and leave standstill more than 10 hours.

In actual mechanical process, often there is following problem in said method:

1, after the water surface floods sample, the bubble in sample is difficult to discharge by the impact of solution-air interface tension force, causes saturated insufficient.Particularly for fine grained soil, because the hole in the soil body is minimum, substantially cannot discharge under the condition of negative pressure that the bubble being attached to inside soil body can provide at general vacuum pump.

2, equipment efficiency of usage is low.The saturation testing of bleeding of fine grained soil generally needs more than 12 hours, and the sample saturation time that infiltration coefficient is lower is then longer.Therefore, if when one group of sample carries out saturated, vacuum reservoir also has remaining space also cannot increase other samples newly.

3, waste water resource.Now widely used saturated cylinder capacity of bleeding is generally about 20 liters.In actual tests, the most of the time can not simultaneously saturated many group samples be to filling saturated cylinder, and each saturated a small amount of sample will waste great lot of water resources.

Summary of the invention

The object of the present invention is to provide a kind of Automatic water-filling formula ground sample saturator, sample saturation effect can be made good, and saturation time of bleeding significantly reduces, and the operate in saturation of different batches sample can uninterruptedly be carried out continuously, can effectively using water wisely.

To achieve these goals, the technical solution used in the present invention is: Automatic water-filling formula ground sample saturator, is characterized in that it comprises water storage cylinder 1, water inlet manifold 3, flow rate fine-tuning valve 4, saturated cylinder 5, exit branch 7, outfall sewer 8, overflow cylinder 9, vacuum pump 11; The upper end of water storage cylinder 1 is provided with opening 2, and the bottom of water storage cylinder 1 is provided with water storage cylinder water delivering orifice, and one end of water inlet manifold 3 is connected with water storage cylinder water delivering orifice, and the other end of water inlet manifold 3 is blind end; Saturated cylinder 5 is 3-20, and the bottom of each saturated cylinder 5 is provided with saturated cylinder water inlet, and saturated cylinder water inlet is connected with water inlet manifold 3 by flow rate fine-tuning valve 4;

Described flow rate fine-tuning valve 4 can by feed water flow speed control consecutive variations between 0.01 l/h to 1 l/h under-100kPa vacuum pressure condition;

The upper end of each saturated cylinder 5 is provided with saturated cylinder water delivering orifice, and saturated cylinder water delivering orifice is connected with outfall sewer 8 by exit branch 7;

The top of overflow cylinder 9 is provided with overflow cylinder water inlet, air intake 14, gas outlet 12; One end of outfall sewer 8 is connected with overflow cylinder water inlet, and the other end of outfall sewer 8 is blind end; Gas outlet 12 is connected by the air intake opening of vacuum-pumping tube with vacuum pump 11.

Water storage cylinder water outlet is provided with valve, and saturated cylinder water inlet is provided with valve, and saturated cylinder water outlet is provided with valve, and overflow cylinder water inlet is provided with valve, and air intake 14 place is provided with valve, and gas outlet 12 place is provided with valve.

The top of overflow cylinder 9 is provided with vacuum table 13.

The capacity of water storage cylinder is 15-20 liter, and water storage cylinder is identical with the capacity of overflow cylinder.

Saturated cylinder is the cylindrical pressure chamber of bottom surface interior diameter 100mm, high 200mm, can customize the pressure chamber of corresponding size by actual size per sample in addition.

Saturated cylinder comprises upper cover, middle storehouse and lower cover, and middle position in storehouse is between lower cover and upper cover, and lower cover and upper cover are fixed by screw rod and nut 15, upper cover, passes through seal with elastometic washer between lower cover and middle storehouse.

The bottom of overflow cylinder 9 is provided with overflow cylinder freeing port 10, and overflow cylinder freeing port place is provided with valve.

Compare existing widely used single casing to bleed saturator, the present invention has the following advantages:

When 1, bleeding saturated, by the control of flow rate fine-tuning valve, the water in water storage cylinder is slowly full of saturated cylinder from bottom to top.Air in ground sample is communicated with extraneous vacuum environment all the time in saturation history, and be conducive to air and discharge, sample saturation effect is better, and saturation time of bleeding significantly reduces.

2, the saturated cylinder of many groups is in parallel, carry out the operations such as dress sample, saturated and sampling not affect other saturated cylinders a certain saturated cylinder, effectively improve the plant factor such as vacuum pump, overflow cylinder and water storage cylinder, the operate in saturation of different batches sample can uninterruptedly be carried out continuously.

3, single saturated cylinder capacity is little, and after installing sample, remaining space is less, is therefore filled with less water and can be full of saturated cylinder, make soil sample completely saturated.Unnecessary water is used for recycling by inflow overflow cylinder, can effectively using water wisely.

Accompanying drawing explanation

Fig. 1 is the structural representation of Automatic water-filling formula ground sample saturator of the present invention.

Fig. 2 is the structural representation (unit: mm) of the saturated cylinder of the present invention.

Number in the figure: 1-water storage cylinder, 2-opening, 3-water inlet manifold (plastic flexible pipe), 4-flow rate fine-tuning valve, the saturated cylinder of 5-, 6-ground sample, 7-exit branch, 8-outfall sewer, 9-overflow cylinder, 10-overflow cylinder freeing port, 11-vacuum pump, 12-gas outlet, 13-vacuum table, 14-air intake (air intake opening), 15-screw rod and nut.

Embodiment

As shown in Figure 1-2, Automatic water-filling formula ground sample saturator, it comprises water storage cylinder 1, water inlet manifold 3, flow rate fine-tuning valve 4, saturated cylinder 5, exit branch 7, outfall sewer 8, overflow cylinder 9, vacuum pump 11; The upper end of water storage cylinder 1 is provided with opening 2(for adding water, being communicated with air), the bottom of water storage cylinder 1 is provided with water storage cylinder water delivering orifice (water storage cylinder water outlet is provided with valve), one end of water inlet manifold 3 is connected with water storage cylinder water delivering orifice (being fixedly connected with), and the other end of water inlet manifold 3 is blind end; Saturated cylinder 5 is 3-20, and the bottom of each saturated cylinder 5 is provided with saturated cylinder water inlet (saturated cylinder water inlet is provided with valve), and saturated cylinder water inlet is connected with water inlet manifold 3 by flow rate fine-tuning valve 4;

Described flow rate fine-tuning valve 4 can by feed water flow speed control consecutive variations between 0.01 l/h to 1 l/h under-100kPa vacuum pressure condition;

The upper end of each saturated cylinder 5 is provided with saturated cylinder water delivering orifice (saturated cylinder water outlet is provided with valve), and saturated cylinder water delivering orifice is connected with outfall sewer 8 by exit branch 7;

The top of overflow cylinder 9 be provided with overflow cylinder water inlet, air intake 14, gas outlet 12(overflow cylinder 9 top be also provided with vacuum table 13; Overflow cylinder water inlet is provided with valve, and air intake 14 place is provided with valve, and gas outlet 12 place is provided with valve), the bottom of overflow cylinder 9 is provided with overflow cylinder freeing port 10, and overflow cylinder freeing port place is provided with valve; One end of outfall sewer 8 is connected with overflow cylinder water inlet, and the other end of outfall sewer 8 is blind end; Gas outlet 12 is connected by the air intake opening of vacuum-pumping tube with vacuum pump 11.

Wherein the capacity of water storage cylinder is 15-20 liter, water storage cylinder identical with the capacity of overflow cylinder (unanimously), can avoid overflow cylinder full water and the situation causing vacuum pump to intake.

Multiple (as: 3-20) saturated cylinder can be installed as required between water storage cylinder and overflow cylinder and operated in saturation be carried out to many group samples simultaneously, be separated by valve between each saturated cylinder and system, become parallel relationship.Flow rate fine-tuning valve 4 is according to treating the water inlet flow rate regime that the water permeability of saturated sample is adjusted to different.Larger flow velocity selected by the sample that water permeability is large, the sample that infiltration coefficient is little, as cohesive soil, then should select relatively little flow velocity.The flow rate fine-tuning valve be equipped with by feed water flow speed control consecutive variations between 0.01 l/h to 1 l/h under-100kPa vacuum pressure condition, can meet from sand to the saturated requirement of the different samples such as clay.

Ground sample 6 is positioned at saturated cylinder 5, after saturated ground sample (test specimen) installs, open vacuum pump and corresponding valve, the water in water storage cylinder slowly will flow in saturated cylinder through flow rate fine-tuning valve under vacuum pump suction, make ground sample saturated gradually from bottom to top.After saturated cylinder is full of water, unnecessary water will flow in overflow cylinder, prevent vacuum pump from intaking.

The vacuum table range being arranged on overflow cylinder top is 0 to-100kPa, can the negative pressure value of reading system inside in real time.

Saturated cylinder is the cylindrical pressure chamber of bottom surface interior diameter 100mm, high 200mm, in addition the saturated cylinder of actual size customization corresponding size per sample.For convenience of dress sample and sampling, saturated cylinder is removable is divided into upper cover, middle storehouse and lower cover three parts, middle position in storehouse is between lower cover and upper cover, and lower cover and upper cover, by screw rod and nut 15 fixing (being combined by screw rod and nut), upper cover, pass through seal with elastometic washer between lower cover and middle storehouse.

The use of Automatic water-filling formula ground sample saturator is as follows:

1, estimate the perviousness treating saturated sample, flow rate fine-tuning valve is adjusted to suitable flow velocity;

2, connect water storage cylinder, flow rate fine-tuning valve, saturated cylinder, overflow cylinder and each assembly of vacuum pump, sample to be loaded in saturated cylinder and to seal;

3, fill water by water storage cylinder, the water in simultaneously emptying overflow cylinder, because overflow cylinder capacity is consistent with water storage cylinder, even if therefore water storage cylinder water all flow into overflow cylinder vacuum pump also can not be caused to intake;

4, open water storage cylinder water delivering orifice, open saturated cylinder water inlet and water delivering orifice, open overflow cylinder water inlet and gas outlet, close overflow cylinder air intake opening and water delivering orifice;

5, start vacuum pump, the water in water storage cylinder slowly will flow in saturated cylinder through flow rate fine-tuning valve with the flow velocity of setting, and be full of saturated cylinder from bottom to top, and make sample completely saturated, unnecessary water will flow in overflow cylinder;

6, namely complete saturation history after the water surface in saturated cylinder floods sample top surface, close the valve of saturated cylinder water inlet and water delivering orifice, the operate in saturation of next group sample after taking out sample, can be carried out.

7, all sample is saturated complete after, close vacuum pump, slowly open overflow cylinder air intake opening valve, open the water in the emptying overflow cylinder of bottom outlet valve simultaneously, ready for testing next time.

Claims (7)

1. Automatic water-filling formula ground sample saturator, is characterized in that it comprises water storage cylinder (1), water inlet manifold (3), flow rate fine-tuning valve (4), saturated cylinder (5), exit branch (7), outfall sewer (8), overflow cylinder (9), vacuum pump (11); The upper end of water storage cylinder (1) is provided with opening (2), and the bottom of water storage cylinder (1) is provided with water storage cylinder water delivering orifice, and one end of water inlet manifold (3) is connected with water storage cylinder water delivering orifice, and the other end of water inlet manifold (3) is blind end; Saturated cylinder (5) is 3-20, and the bottom of each saturated cylinder (5) is provided with saturated cylinder water inlet, and saturated cylinder water inlet is connected with water inlet manifold (3) by flow rate fine-tuning valve (4);
Flow of inlet water is controlled consecutive variations between 0.01 l/h to 1 l/h by described flow rate fine-tuning valve (4) under-100kPa vacuum pressure condition;
The upper end of each saturated cylinder (5) is provided with saturated cylinder water delivering orifice, and saturated cylinder water delivering orifice is connected with outfall sewer (8) by exit branch (7);
The top of overflow cylinder (9) is provided with overflow cylinder water inlet, air intake (14), gas outlet (12); One end of outfall sewer (8) is connected with overflow cylinder water inlet, and the other end of outfall sewer (8) is blind end; Gas outlet (12) is connected by the air intake opening of vacuum-pumping tube with vacuum pump (11).
2. Automatic water-filling formula ground sample saturator according to claim 1, it is characterized in that: water storage cylinder water outlet is provided with valve, saturated cylinder water inlet is provided with valve, saturated cylinder water outlet is provided with valve, overflow cylinder water inlet is provided with valve, air intake (14) place is provided with valve, and gas outlet (12) place is provided with valve.
3. Automatic water-filling formula ground sample saturator according to claim 1, is characterized in that: the top of overflow cylinder (9) is provided with vacuum table (13).
4. Automatic water-filling formula ground sample saturator according to claim 1, is characterized in that: the capacity of water storage cylinder is 15-20 liter, and water storage cylinder is identical with the capacity of overflow cylinder.
5. Automatic water-filling formula ground sample saturator according to claim 1, is characterized in that: saturated cylinder is bottom surface interior diameter 100mm, the cylindrical pressure chamber of high 200mm.
6. Automatic water-filling formula ground sample saturator according to claim 1, it is characterized in that: saturated cylinder comprises upper cover, middle storehouse and lower cover, middle position in storehouse is between lower cover and upper cover, and lower cover and upper cover are fixed by screw rod and nut (15), upper cover, passes through seal with elastometic washer between lower cover and middle storehouse.
7. Automatic water-filling formula ground sample saturator according to claim 1, is characterized in that: the bottom of overflow cylinder (9) is provided with overflow cylinder freeing port (10), and overflow cylinder freeing port place is provided with valve.
CN201410526914.1A 2014-10-09 2014-10-09 Automatic water-filling formula ground sample saturator CN104251790B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410526914.1A CN104251790B (en) 2014-10-09 2014-10-09 Automatic water-filling formula ground sample saturator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410526914.1A CN104251790B (en) 2014-10-09 2014-10-09 Automatic water-filling formula ground sample saturator

Publications (2)

Publication Number Publication Date
CN104251790A true CN104251790A (en) 2014-12-31
CN104251790B CN104251790B (en) 2017-12-29

Family

ID=52186895

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410526914.1A CN104251790B (en) 2014-10-09 2014-10-09 Automatic water-filling formula ground sample saturator

Country Status (1)

Country Link
CN (1) CN104251790B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106153409A (en) * 2015-03-24 2016-11-23 宁波工程学院 Oscillating mode vacuum saturation device
CN106568891A (en) * 2016-10-12 2017-04-19 河海大学 Testing device used for rock-like sample batch positive pressure water saturation, and application method thereof
CN107101908A (en) * 2017-03-22 2017-08-29 吉林大学 A kind of capillary water negative pressure Quick testing instrument and its method of work
CN107179393A (en) * 2017-06-19 2017-09-19 中国科学院武汉岩土力学研究所 A kind of pore water pressure force test method of the fine and close rock soil medium of low water content
CN108287098A (en) * 2017-12-21 2018-07-17 中国地质大学(武汉) A kind of microfossil steeps sampling device automatically
CN110553922A (en) * 2019-08-21 2019-12-10 中国石油大学(北京) Testing device for pore pressure of saturated outcrop test piece

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201730615U (en) * 2010-06-26 2011-02-02 大庆油田有限责任公司 Evacuating saturation device for testing rock porosity
CN201837578U (en) * 2010-10-23 2011-05-18 大庆油田有限责任公司 Automatic pressurizing and constant pressure saturation device for rock porosity testing
CN201926580U (en) * 2010-12-23 2011-08-10 北京中关村开发建设股份有限公司 Concrete vacuum saturating device
CN102359084A (en) * 2011-07-29 2012-02-22 中国农业大学 Simulation regulation and control system and method of percolation performance of aeration zone of river or lake
CN102507904A (en) * 2011-11-04 2012-06-20 北京交通大学 Thermal consolidation pressure room of hollow column sample
CN202305292U (en) * 2011-10-29 2012-07-04 中国石油大学(华东) Rock core vacuumizing and pressurization saturation device
CN102706711A (en) * 2012-06-13 2012-10-03 中国水利水电科学研究院 Geotechnical-engineering centrifugal model saturation device
CN202583178U (en) * 2012-03-29 2012-12-05 中国农业科学院农业资源与农业区划研究所 Experimental device for measuring soil mineralization potential in large batches
CN102841046A (en) * 2012-09-20 2012-12-26 中国石油大港油田勘探开发研究院 Method for measuring rock porosity and measuring device
CN202886369U (en) * 2012-10-15 2013-04-17 中国建筑第六工程局有限公司 Experiment system of saturated soil sample
KR101260177B1 (en) * 2011-11-18 2013-05-06 한국지질자원연구원 Apparatus and method for dry-saturating sample with water
CN202947952U (en) * 2012-11-12 2013-05-22 中国石油集团西部钻探工程有限公司 Multi-core self-priming evacuation saturation control device
CN203083907U (en) * 2013-01-30 2013-07-24 东南大学 High-water-content soil and bentonite material penetration test cylinder and testing device
CN103411869A (en) * 2013-07-26 2013-11-27 合肥工业大学 Negative pressure osmosis test device

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201730615U (en) * 2010-06-26 2011-02-02 大庆油田有限责任公司 Evacuating saturation device for testing rock porosity
CN201837578U (en) * 2010-10-23 2011-05-18 大庆油田有限责任公司 Automatic pressurizing and constant pressure saturation device for rock porosity testing
CN201926580U (en) * 2010-12-23 2011-08-10 北京中关村开发建设股份有限公司 Concrete vacuum saturating device
CN102359084A (en) * 2011-07-29 2012-02-22 中国农业大学 Simulation regulation and control system and method of percolation performance of aeration zone of river or lake
CN202305292U (en) * 2011-10-29 2012-07-04 中国石油大学(华东) Rock core vacuumizing and pressurization saturation device
CN102507904A (en) * 2011-11-04 2012-06-20 北京交通大学 Thermal consolidation pressure room of hollow column sample
KR101260177B1 (en) * 2011-11-18 2013-05-06 한국지질자원연구원 Apparatus and method for dry-saturating sample with water
CN202583178U (en) * 2012-03-29 2012-12-05 中国农业科学院农业资源与农业区划研究所 Experimental device for measuring soil mineralization potential in large batches
CN102706711A (en) * 2012-06-13 2012-10-03 中国水利水电科学研究院 Geotechnical-engineering centrifugal model saturation device
CN102841046A (en) * 2012-09-20 2012-12-26 中国石油大港油田勘探开发研究院 Method for measuring rock porosity and measuring device
CN202886369U (en) * 2012-10-15 2013-04-17 中国建筑第六工程局有限公司 Experiment system of saturated soil sample
CN202947952U (en) * 2012-11-12 2013-05-22 中国石油集团西部钻探工程有限公司 Multi-core self-priming evacuation saturation control device
CN203083907U (en) * 2013-01-30 2013-07-24 东南大学 High-water-content soil and bentonite material penetration test cylinder and testing device
CN103411869A (en) * 2013-07-26 2013-11-27 合肥工业大学 Negative pressure osmosis test device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
郗宁: "三轴试件抽气饱和方法及其对固结不排水剪强度试验的影响分析", 《铁道勘察》 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106153409A (en) * 2015-03-24 2016-11-23 宁波工程学院 Oscillating mode vacuum saturation device
CN106568891A (en) * 2016-10-12 2017-04-19 河海大学 Testing device used for rock-like sample batch positive pressure water saturation, and application method thereof
CN107101908A (en) * 2017-03-22 2017-08-29 吉林大学 A kind of capillary water negative pressure Quick testing instrument and its method of work
CN107179393A (en) * 2017-06-19 2017-09-19 中国科学院武汉岩土力学研究所 A kind of pore water pressure force test method of the fine and close rock soil medium of low water content
CN107179393B (en) * 2017-06-19 2019-05-10 中国科学院武汉岩土力学研究所 A kind of pore water pressure force test method of low water content densification rock soil medium
CN108287098A (en) * 2017-12-21 2018-07-17 中国地质大学(武汉) A kind of microfossil steeps sampling device automatically
CN110553922A (en) * 2019-08-21 2019-12-10 中国石油大学(北京) Testing device for pore pressure of saturated outcrop test piece

Also Published As

Publication number Publication date
CN104251790B (en) 2017-12-29

Similar Documents

Publication Publication Date Title
CN104535470B (en) Penetration and corrosion triaxial testing apparatus for gravel soil and testing method thereof
Tavenas et al. The permeability of natural soft clays. Part I: Methods of laboratory measurement
CN102778554B (en) Experimental device for improving permeability of shale gas storage layer in supercritical CO2 fracturing process
CN103728435B (en) Rainfall and underground water coupling slope simulation test device and test method
CN103776979B (en) A kind of coal seam water infusion suppresses analog detection method and the device of desorption of mash gas effect
CN105067781A (en) Foam flooding evaluation device and evaluation method thereof
CN103592186A (en) Device and experimental method for researching shale hydraulic-fracturing damage evolution under true triaxial loading condition
CN103760085B (en) A kind of test unit and test method thereof measuring multiscale rock permeability
CN105092450B (en) A kind of hypotonicity saturated clay permeation tester and method of testing
CN103398902B (en) Test apparatus for flexible loading and instantaneously unloading of high geostress, and test method
CN105527384A (en) Grouting simulating test device and test method thereof
CN103439146A (en) Positive-pressure pneumatic type automatic water sample sampler
CN102305729B (en) Negative pressure extracting type in-situ airtight water acquiring technology
CN103460006A (en) Water absorption test method and water absorption test device for concrete surface
CN103674822A (en) Gas and liquid two-phase flow loop corrosion experiment device
CN203702118U (en) Experimental device for simulating propping agent sedimentation and paving inside fracturing cracks
CN204903506U (en) Foam flooding evaluation device
CN104655803A (en) Tunnel grouting model testing device
CN105064920B (en) The hypotonic weak seam punching release extraction simulation experiment method of multi- scenarios method
CN104990765B (en) A kind of monitoring instrument and monitoring method for offshore and estuarine deposit pore water
CN104674784B (en) Side slope tidal level regulation device when hypergravity
CN105588796B (en) A kind of device of accurate quick measure soil permeability coefficient
CN206035473U (en) Fracturing fluid returns row crack analogue means
CN103558041B (en) Measure model test apparatus and the test method of land movement under in-situ stress field action
CN201926607U (en) Seepage deformation tester

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant