CN202562835U - High-pressure low-temperature three-axis corrosion experimental device - Google Patents
High-pressure low-temperature three-axis corrosion experimental device Download PDFInfo
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- CN202562835U CN202562835U CN 201220195754 CN201220195754U CN202562835U CN 202562835 U CN202562835 U CN 202562835U CN 201220195754 CN201220195754 CN 201220195754 CN 201220195754 U CN201220195754 U CN 201220195754U CN 202562835 U CN202562835 U CN 202562835U
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- temperature
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Abstract
The utility model relates to a high-pressure low-temperature three-axis corrosion experimental device which is simple in structure and convenient to operate, and aims at providing experimental basis and basic data for accurate understanding of development characteristics of deep karst and further providing scientific basis for project support measures which are necessary in later stages. The high-pressure low-temperature three-axis corrosion experimental device is fixed on an experimental table, and is characterized by comprising a confining pressure bin seat riveted with the experimental table, a confining pressure bin cap fixed on the top of the seat in riveted mode and an axle load server arranged above the bin cap. The confining pressure bin seat is a confining pressure bin with the outer in a circular truncated cone shape and the inner in a hollow cylindrical column shape. The confining pressure bin cap is a flat plate, and is provided with a through hole. The diameter of the through hole is matched with a sample diameter. The axle load server is composed of two cylinders with different diameters. A pressure meter is arranged in one cylinder with a large upper portion diameter, and the cylinder is communicated with the lower confining pressure bin through a pipeline. The high-pressure low-temperature three-axis corrosion experimental device is applied to underground projects like hydraulic and hydroelectric engineering, traffic engineering and mines engineering.
Description
Technical field
The utility model relates to three corrosion experimental provisions of a kind of high pressure low temperature.Be applicable to underground workss such as Hydraulic and Hydro-Power Engineering, traffic, mine.
Background technology
According to the karst development characteristics in the engineering district and the needs of project construction; (comprise artificial material like hypogee, dam foundation, traffic tunnel or other rock soil mass especially; Like concrete); Owing to suffer high pressure seepage flow, corrosion for a long time, the abominable nature and the influence of running environment such as wash away, cause the rock soil mass overall characteristic As time goes on to the direction variation of its function and security reduction.Water and the rock soil mass interaction long-term existence of bearing high pressure cause that the border country rock produces microfissure and many coupling effects damage, and the freezing effect of low temperature has especially in addition been quickened the speed of its reduction undoubtedly.Above aspect all causes the problem such as reduce of country rock physico-mechanical properties easily, and promptly along with the increase at operation age, country rock can wear out gradually.Engineering higher-pressure region rock soil mass endurance issues is one of focal issue of countries in the world engineering circle common concern all the time.So far, under the seepage flow condition of high pressure low temperature, relative to lacking to the karst region to the corrosion characteristic and the corrosion Depth Study of rock mass.
Summary of the invention
The technical matters that the utility model will solve is: to the problem of above-mentioned existence; Provide a kind of simple in structure, easy to operate high pressure low temperature three corrosion experimental provisions; For being familiar with the deep karst development characteristics exactly experimental basis and basic data are provided, and scientific basis are provided for necessary engineering support measure of later stage.
The technical scheme that the utility model adopted is: three corrosion experimental provisions of high pressure low temperature; This device is fixed on the experiment table; It is characterized in that: said experimental provision comprises with the confined pressure Cang Gai at the confined pressure storehouse seat of experiment table riveted joint, the present top of rivet clasp and is located at the axial compression servomechanism of the side of covering, storehouse; This seat outside, confined pressure storehouse is truncated cone-shaped, and inside is the confined pressure storehouse of hollow cylindrical, and confined pressure Cang Gai is one dull and stereotyped and have a through hole that diameter and specimen finish are complementary; The axial compression servomechanism is made up of two different right cylinders of diameter; Tensimeter is housed in the upper diameter large cylinder also is communicated with the confined pressure storehouse of below through pipeline, also pass an aqueduct in the said axial compression servomechanism, aqueduct one end communicates with the confined pressure storehouse; The other end is communicated with outside karst water through temperature controller, flow instrument I, high-pressure pump successively, and the centre of said experiment table is equipped with flow instrument II.
The beneficial effect of the utility model is: this experimental provision is simple in structure, easy to operate; Experiment through this device; Can grasp underground deep building and other bears high pressure low temperature underground hole group country rock under stressed corrosion state; Along with the variation of external condition, its corrosion rule reaches the corrosion influence to the rock mass sample; Grasp the inner solution corrosion process of carbonatite under water under high pressure infiltration condition and the cryogenic high pressure state in underground deep simultaneously, removing the potential danger of engineering, and scientific basis is provided for follow-up mechanical test.
Description of drawings
Fig. 1 is the cut-open view of the utility model experimental provision.
Fig. 2 is the vertical view of the utility model experimental provision.
Embodiment
Like Fig. 1, shown in Figure 2, present embodiment is three corrosion experimental provisions of a kind of high pressure low temperature, comprises experiment table 1, confined pressure storehouse seat 13, confined pressure storehouse lid 14 and axial compression servomechanism 8 etc., and wherein experiment table 1 centre is provided with pod apertures and flow instrument II11 is installed.Confined pressure storehouse seat 13 is riveted on the experiment table 1 through rivet 9, and top and confined pressure storehouse lid 14 are fixing.Seat 13 outsides, said confined pressure storehouse are truncated cone-shaped, and inside is the confined pressure storehouse 10 of hollow cylindrical, is used to place institute's test specimens in the confined pressure storehouse 10, and can apply level to confined pressure σ to sample
2, σ
3Said confined pressure storehouse lid 14 is a flat board, and heart position has the through hole that diameter and specimen finish are complementary therein.Corresponding to the through hole on the confined pressure storehouse lid 14, in the side of covering, storehouse axial compression servomechanism 8 is installed and (is applied lateral pressure σ to sample in the confined pressure storehouse 10 of below
1), both are through rivet 9 rivet clasps.Tensimeter 6 is housed on the axial compression servomechanism 8 and passes through pipeline and be communicated with the confined pressure storehouse 10 of below; Also be provided with an aqueduct 12 in this axial compression servomechanism; Aqueduct one end (water delivering orifice) communicates with confined pressure storehouse 10; The other end is communicated with outside karst water 2 through temperature controller 5, flow instrument I 4, high-pressure pump 3 successively, and karst water is imported in this experimental provision after the pressurization cooling is handled.
The method that adopts three corrosion experimental provisions of high pressure low temperature to experimentize in the present embodiment is following:
1) get former state water and perhaps prepare according to the chemical feature of engineering district karst water, consider actual conditions, the high-pressure pump 3 of flowing through successively, flow instrument I4 and temperature controller 5 pressurize to lower the temperature and handle;
2) choosing 3 column type cores is sample 7, and with the impurity such as dust on distilled water washed samples surface, the diameter of 3 samples is 20mm, height 30mm;
3) sample is placed on dries 24 hours in the drying baker, claim its weight, note is made W
1, unit: mg;
4) 3 lateral pressure σ that sample applied
1, be respectively 40Mpa, 50Mpa and 60Mpa;
5) 3 levels that sample applied are to confined pressure σ
2=σ
3, be respectively 20Mpa, 30Mpa and 40Mpa;
6) karst water hydraulic pressure is respectively 15Mpa, 25Mpa and 35Mpa;
7) temperature of karst water is controlled at 10 ℃;
8) monitor flow instrument 4 data in real time, when the flow instrument data become big suddenly, should stop test, excessive with waterproofing pressure, cause the sample hydraulic fracture, cause test failure;
9) each sample in the confined pressure storehouse 10 test periods 24 hours, first sample σ that makes an experiment
1Be 40Mpa, σ
2=σ
3Be 20Mpa, karst water hydraulic pressure is 15Mpa; Second sample σ that makes an experiment
1Be 50Mpa, σ
2=σ
3Be 30Mpa, karst water hydraulic pressure is 25Mpa; The 3rd sample σ that makes an experiment
1Be 60Mpa, σ
2=σ
3Be 40Mpa, karst water hydraulic pressure is 35Mpa;
10) after each test finishes, this sample is put into drying baker dried 24 hours, sweep off floating dust, adopt the per mille scales/electronic balance weighing, the weight that draws three groups of corrosions experiment back samples is remembered respectively and is made W
2, W
3, W
4, unit: mg;
11) get tail water infiltration water (centre via experiment table is equipped with the water that flow instrument II flows out, and is test karst water later),, draw calcium ion concentration, calculate calcium carbonate content T through chemical equation through indoor chemical examination
i(i=2,3,4), unit: mg/L;
12) ask for corrosion amount and erosion rate:
Quality corrosion amount a
i=W
1-W
i(i=2,3,4)
Quality erosion rate c
i=(W
1-W
i)/24 (i=2,3,4)
Erosion rate X
i=4E
iT
i/ 100 (i=2,3,4) unit: mm/ thousand; Wherein, E is a depth of erosion, can obtain unit through apparatus measures: dm.
The quality erosion rate is meant the whole loss percentage of (per hour generally being) test specimen in the unit interval; Erosion rate is the karstology specialized vocabulary, refers to sample the corrosion degree of depth in per thousand; The former is a weight concept, and the latter is a length concept.
Claims (1)
1. three corrosion experimental provisions of a high pressure low temperature; This device is fixed on the experiment table (1); It is characterized in that: said experimental provision comprises with the confined pressure Cang Gai (14) at the confined pressure storehouse seat (13) of experiment table riveted joint, the present top of rivet clasp and is located at the axial compression servomechanism (8) of the side of covering, storehouse; This confined pressure storehouse seat (13) outside is truncated cone-shaped; Inside is the confined pressure storehouse (10) of hollow cylindrical; Confined pressure Cang Gai (14) is one dull and stereotyped and have the through hole that diameter and specimen finish are complementary, and axial compression servomechanism (8) is made up of two different right cylinders of diameter, tensimeter (6) is housed in the upper diameter large cylinder and passes through pipeline to be communicated with the confined pressure storehouse (10) of below; Also pass an aqueduct (12) in the said axial compression servomechanism (8); Aqueduct one end communicates with confined pressure storehouse (10), and the other end is communicated with outside karst water (2) through temperature controller (5), flow instrument I (4), high-pressure pump (3) successively, and the centre of said experiment table (1) is equipped with flow instrument II (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220195754 CN202562835U (en) | 2012-05-03 | 2012-05-03 | High-pressure low-temperature three-axis corrosion experimental device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220195754 CN202562835U (en) | 2012-05-03 | 2012-05-03 | High-pressure low-temperature three-axis corrosion experimental device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202562835U true CN202562835U (en) | 2012-11-28 |
Family
ID=47212480
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220195754 Expired - Fee Related CN202562835U (en) | 2012-05-03 | 2012-05-03 | High-pressure low-temperature three-axis corrosion experimental device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202562835U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661914A (en) * | 2012-05-03 | 2012-09-12 | 中国水电顾问集团华东勘测设计研究院 | High-pressure low-temperature triaxial corrosion experimental device and experimental method thereof |
| CN103472191A (en) * | 2013-09-18 | 2013-12-25 | 三峡大学 | Airtight dynamic real-time liquid measuring instrument |
| CN106153859A (en) * | 2016-06-22 | 2016-11-23 | 福建工程学院 | A kind of rock salt moves assay device and the computational methods of water-soluble erosion |
| CN106980014A (en) * | 2017-04-27 | 2017-07-25 | 河海大学 | Simulate concrete for hydraulic structure corrosion deterioration test device and method under high hydraulic gradient |
-
2012
- 2012-05-03 CN CN 201220195754 patent/CN202562835U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661914A (en) * | 2012-05-03 | 2012-09-12 | 中国水电顾问集团华东勘测设计研究院 | High-pressure low-temperature triaxial corrosion experimental device and experimental method thereof |
| CN103472191A (en) * | 2013-09-18 | 2013-12-25 | 三峡大学 | Airtight dynamic real-time liquid measuring instrument |
| CN106153859A (en) * | 2016-06-22 | 2016-11-23 | 福建工程学院 | A kind of rock salt moves assay device and the computational methods of water-soluble erosion |
| CN106980014A (en) * | 2017-04-27 | 2017-07-25 | 河海大学 | Simulate concrete for hydraulic structure corrosion deterioration test device and method under high hydraulic gradient |
| CN106980014B (en) * | 2017-04-27 | 2017-12-12 | 河海大学 | Simulate concrete for hydraulic structure corrosion deterioration test device and method under high hydraulic gradient |
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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: 20121128 Termination date: 20160503 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |