CN203595699U - Test device for acidic water to vertically seep to make acid erosion reaction with rock stratum - Google Patents
Test device for acidic water to vertically seep to make acid erosion reaction with rock stratum Download PDFInfo
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- CN203595699U CN203595699U CN201320815760.9U CN201320815760U CN203595699U CN 203595699 U CN203595699 U CN 203595699U CN 201320815760 U CN201320815760 U CN 201320815760U CN 203595699 U CN203595699 U CN 203595699U
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Abstract
The utility model provides a test device for acidic water to vertically seep to make acid erosion reaction with a rock stratum, and relates to the technical field of ground surface rock mass physical chemistry. The device is divided into three parts including an environment simulating part, a water rock reaction part and a water sample test part. The environment simulating part comprises a nitrogen gas cylinder and an acid solution device container. According to the water rock reaction part, an inner cavity of an upper shell is designed into a part similar to a flat cone, and the bottom of the cone is connected with a water outlet; an inner cavity of the lower shell is designed into a cylindrical cavity, wherein one end of the cylindrical cavity is conical, the cylindrical cavity is internally provided with a step, and the top of the cylindrical cavity is connected with a water inlet. The upper shell and the lower shell are connected through a flange plate and a bolt. The position, close to a water outlet, of the inner cavity of the lower shell is provided with a stainless steel multi-hole water through steel sheet and a water outlet end permeable membrane in sequence. The water sample test part comprises a set of two-level reaction device and a set of three-level reaction device which are connected behind a one-level reaction device in sequence, the water outlet of the one-level reaction device, the water outlet of the two-level reaction device and the water outlet of the three-level reaction device are provided with electronic pressure meters and three-way valves respectively, and the water sample test part further comprises water sample collectors connected with the valves, measuring cylinders placed on electronic scales, and the two water outlets behind the three-level reaction device are respectively connected with the three-way valves and the water sample collectors. The test device is mainly used for the water rock chemical analysis.
Description
Technical field
The utility model relates to earth's surface rock mass physical technical field of chemistry, belongs to rock sample perviousness and micromechanism form and seepage flow solution and carry out the device of test analysis.
Background technology
The environmental problems such as at present, China's environmental pollution is quite serious, the acid rain causing because of secondary environmental problem increase chemical substance in rainwater, river and lake water, and environment acidifying (pH<5.6) problem is more and more serious.To Rock And Soil, erosion action is microcosmic, long-term to acidifying environment, can affect the rock mass mechanical characteristic in each period, and along with the operation of engineering projects time increases, problem will be more and more outstanding.Therefore, rock mass mineral chemical composition is affected to the correlative study of the mechanical strength change mechanism causing thereby carry out acid precipitation, Rock And Soil is subject to physical chemistry erosion and causes that engineering property variation and engineering safety and assessment tool thereof are of great significance.
Early-stage Study shows, seepage effect relates to pore water seepage flow, can carry the multiphase coupled system of fine particle migration and porous medium distortion.Pore water is at Rock And Soil skeleton seepage flow, the movable fine particle in rock mass inside is produced wash away, transportation.The achievement in research in past mainly concentrates in seepage flow-erosion-stress coupling effect, from Rock And Soil micromechanism form and mechanical strength variation aspect, seepage effect is analyzed.From macroscopic view, in rock mass, seepage flow has heterogeneity and anisotropy, and in the position of cranny development, seepage erosion is serious, and is certain directivity; From microcosmic, the physico-mechanical properties of the geometries characteristic in crack and crack inner stuffing matter is the broken important factor in order corroding of seepage flow.
But existing seepage flow test device has often been ignored and entered the chemical erosion effect of osmometer solution to rock mass materials, some devices are not considered into the react variation of the Rock And Soil mineralogical composition that causes, pore-size structure (porosity), hydraulic characteristic (permeability), physical features (effecting reaction specific surface area), mechanical characteristic (resistance to compression shearing strength etc.) of osmometer solution and the contained mineral chemical composition of rock mass.Therefore, this experimental provision is more fully considered the impact of seepage inflow erosion process water rock chemical action for the deteriorated generation of Rock Nature, for earth's surface, Acid Rain Area rock mass engineering project specificity analysis and governing measure provide important theoretical foundation and technical support.For the deficiencies in the prior art, design one can.This device can directly adopt all types of rock mass samples to carry out chemical action with the aqueous solution that contains chemical solute and study chemical deterioration process and the mechanism of rock mass under water rock chemical action.
Utility model content
The purpose of this utility model is to provide the vertical seepage flow of a kind of acidulous water, with rock stratum, the test unit that acid erosion reacts occurs, and it can simulate the water rock chemical action containing heterogeneity aqueous solution and rock mass generation chemical action effectively.
The purpose of this utility model is to be achieved through the following technical solutions: the vertical seepage flow of a kind of acidulous water, with rock stratum, the test unit that acid erosion reacts occurs, formed by environmental baseline simulation part, water rock reactive moieties, water sample part of detecting respectively,
In the connecting line of nitrogen cylinder and acid solution container, be provided with according to the order of sequence pointer pressure gauge, electronic pressure gauge and wing bolt, the bottom of acid solution container is provided with the water inlet of the pipeline connection first order reaction device with valve;
Water rock reactive moieties comprises: first order reaction device is assembled by upper shell and lower house, and one end of upper shell inner chamber is flat cone-shaped and inner cylindrical cavity with the level, and rock sample is placed at step place, and cylindrical cavity top is connected with water delivering orifice; Lower housing cavity is cone, cone base is connected with water inlet, upper shell intracavity diameter is slightly larger than lower house diameter, upper shell bottom is provided with screw along periphery, lower house bottom is provided with the bolt hole coordinating with ring flange, upper shell is connected with bolt by ring flange with lower house, on ring flange, can place airtight packing ring.Lower house middle part surface is provided with circle shape groove, is provided with gasket circle in groove; Set gradually stainless steel porous at upper shell inner chamber near water outlet and cross water steel disc and water side permeable membrane;
Water sample part of detecting comprises: comprise that other two cover is connected to first order reaction device second order reaction device and third-order reaction device below in turn, their water delivering orifice is equipped with electronic pressure gauge and three-way valve, the water delivering orifice of one termination first order reaction device of three-way valve, the water inlet of one termination second order reaction device, the other end connects water sampler even and is placed on the graduated cylinder on electronic balance; The structure of firsts and seconds reaction unit is consistent with connected mode; Two water delivering orifices of three-way valve of third-order reaction device water outlet are directly connected with water sampler and the graduated cylinder being placed on electronic balance respectively.
Described lower housing cavity is provided with quartzose permeable membrane.
The two ends of described rock sample are provided with cushion rubber, and the front and back of cushion rubber are provided with airtight cushion rubber and airtight cushion rubber.
Between described nitrogen cylinder (1) and container, be connected by pressure duct.
In the utility model:
Environmental baseline simulation part can be connected with acid solution apparatus container by valve by high-pressure nitrogen bottle, in container, solution can be set to respectively the sulfuric acid solution of pH=2, pH=5, pH=7 different acidity, and wherein the solution of pH=7 is that deionized water solution is tested as blank group.When on-test, the gas in nitrogen cylinder is entered in bottle by container top, and acid solution gas in container constant pressure (between 0.3-0.6MPa) is set.
Water rock reactive moieties is the core that acidulous water infiltrates in reaction unit, is mainly in order to guarantee that acid solution and rock mass fully carry out physics chemical action.Matching requirements has good leakproofness, vertically permeates through rock sample only with the liquid in assurance device, can not leak from rock sample side.The course of work is: when test, first anti-rock mass sample acid corrosion cushion rubber is enclosed within circular rock sample periphery embedding device; Acid solution, from the water inlet access to plant of left side, contacts with rock sample fully comprehensively, and acid erosion effect occurs; Reacted liquid filters through permeable membrane, and liquid flows out from device water delivering orifice, enters the proving installation of next stage.Stainless steel stephanoporate steel plate is placed on the inner chamber step of the most close water delivering orifice, and its effect is to make in test producing balanced forces and the indeformable breakage of rock mass sample, and stephanoporate steel plate need have certain compressive strength and resistance to chemical corrosion power; The effect of quartzose permeable membrane is not affected by the solid particle dissolving in solution while being the solution outflow analysis after assurance and rock mass specimen reaction.The conical design of water inlet, water delivering orifice is conducive to reduce the quiet volume in reaction vessel, shortens the solution delivery time.Upper and lower part cylindrical container should have enough large intensity.At water delivering orifice arranged outside electronic pressure gauge and three-way valve, so that control acid solution and rock sample effect rear solution carry out various physical chemistry test jobs.
Water sample part of detecting is mainly made up of electronic pressure gauge, high Accuracy Electronic Balance and graduated cylinder, preferably there is graduated cylinder lid the water inlet of graduated cylinder, to reduce the evaporation of moisture, calculate the variation of rock sample infiltration coefficient under acid solution corrodes by reading the flow of certain hour inner acidic solution.Electronic pressure gauge is used for measuring every one-level rock sample react with acid solution after at ducted pressure, by the change of three-way valve water delivering orifice, can change and calculate the percolation flow velocity of solution in rock samples at different levels inside by the infiltration coefficient of flow rate calculation and pressure differential.
The utility model has the advantages that:
This device has the different acid concentrations of simulation (as H
2sO
4) erosion action to different depth of burial rock mass, by the solution chemistry composition to after water-rock interaction, pH value, conductivity EC and rock, the isoparametric variation test of infiltration coefficient, and infiltrate and corrode rock surface micromechanism metamorphosis and observe, for research earth's surface, Acid Rain Area acid rain infiltration process for carbonate containing mineral etc. easily and rock stratum water rock erosion action and the acid weakening mechanisms of acid reaction important tests foundation is provided.
Accompanying drawing explanation
Fig. 1 is the utility model integral layout schematic diagram
Fig. 2 is the upper shell cut-open view of the utility model reaction unit
Fig. 3 is the lower house cut-open view of the utility model reaction unit
Fig. 4 is the lower house vertical view of the utility model reaction unit
Embodiment:
For further setting forth the technological means that the utility model adopts, as follows to concrete implementation below in conjunction with accompanying drawing.
There is with rock stratum the test unit that acid erosion reacts in the vertical seepage flow of a kind of acidulous water, formed by environmental baseline simulation part, water rock reactive moieties, water sample part of detecting respectively, in the connecting line of high-pressure nitrogen bottle 1 and acid solution container 5, be provided with according to the order of sequence pointer pressure gauge 2, electronic pressure gauge 3 and wing bolt 4, the bottom of acid solution container 5 is provided with the water inlet of the pipeline connection first order reaction device 7 with valve 6;
Water rock reactive moieties comprises: first order reaction device 7 is assembled by upper shell 14 and lower house 27, and one end of upper shell 14 inner chambers is flat cone-shaped and inner cylindrical cavity with the level, and rock sample 19 is placed at step place, and cylindrical cavity top is connected with water delivering orifice 22; Lower house 27 inner chambers are cone, cone base is connected with water inlet 25, upper shell 14 intracavity diameters are slightly larger than lower house 27 diameters, upper shell 14 bottoms are provided with screw 21 along periphery, lower house 27 bottoms are provided with the bolt hole 21 coordinating with ring flange 26, upper shell 14 is connected with bolt by ring flange 26 with lower house 27, on ring flange 26, can place airtight packing ring.Lower house 27 middle part surfaces are provided with circle shape groove, are provided with gasket circle 24 in groove; Set gradually stainless steel porous at upper shell 14 inner chambers near water delivering orifice 22 places and cross water steel disc 15 and water side permeable membrane 16;
Water sample part of detecting comprises: comprise that other two cover is connected to first order reaction device 7 second order reaction device 8 and third-order reaction device 9 below in turn, their water delivering orifice is equipped with electronic pressure gauge and three-way valve, the water delivering orifice 22 of one termination first order reaction device of three-way valve, the water inlet of one termination second order reaction device, the water sampler 11 that the other end connects and be placed on electronic balance 13 graduated cylinder 12; The structure of firsts and seconds reaction unit is consistent with connected mode; Two water delivering orifices of three-way valve of third-order reaction device 9 water outlets are directly connected with water sampler and the graduated cylinder being placed on electronic balance respectively.
Described lower house 27 inner chambers are provided with quartzose permeable membrane 23.
The two ends of described rock sample 19 are provided with cushion rubber 18, and the front and back of cushion rubber 18 are provided with airtight cushion rubber 17 and airtight cushion rubber 20.
Between described high-pressure nitrogen bottle 1 and acid solution container 5, be connected by pressure duct.
In the utility model: environmental baseline simulation part can be connected with acid solution container 5 with wing bolt valve 4 by pointer pressure gauge 2, electronic pressure gauge 3 by high-pressure nitrogen bottle 1, in acid solution container 5, solution can be set to respectively the sulfuric acid solution of pH=2, pH=5, pH=7 different acidity, and wherein the solution of pH=7 is that deionized water solution is tested as blank group.When on-test, the gas in high-pressure nitrogen bottle 1 is entered in bottle by acid solution container 5 tops, and the interior gaseous tension of acid solution container 5 constant (between 0.3-0.6MPa) is set.
Water rock reactive moieties is the core that acidulous water infiltrates in reaction unit, water side permeable membrane 16, water inlet end permeable membrane 23 are housed in reaction unit, surrounding has etch-proof airtight circle, comprise airtight cushion rubber 17, rock mass cushion rubber 18, lower airtight cushion rubber 20, be used for fixing rock sample and keep reaction bulb and the sealing of rock sample contact site; Mainly in order to guarantee that acid solution and rock mass fully carry out physics chemical action.Matching requirements has good leakproofness, vertically permeates through rock sample only with the liquid in assurance device, can not leak from rock sample 19 sides.The course of work is: when test, first anti-rock sample 19 acid corrosion cushion rubber 18 is enclosed within circular rock sample periphery embedding device; Acid solution, from left side water inlet 25 accesss to plant, contacts with rock sample 19 fully comprehensively, and acid erosion effect occurs; Reacted liquid filters through permeable membrane 16, and liquid flows out from device water delivering orifice 22, enters the proving installation 8 of next stage.Stainless steel stephanoporate steel plate 15 is placed on the inner chamber step of the most close water delivering orifice 22, and its effect is to make in test producing balanced forces and the indeformable breakage of rock mass sample, and stephanoporate steel plate 15 need have certain compressive strength and resistance to chemical corrosion power; The effect of quartzose permeable membrane 23 is not affected by the solid particle dissolving in solution while being the solution outflow analysis after assurance and rock mass specimen reaction.Near conical design water inlet 25, water delivering orifice 22 is conducive to reduce the quiet volume in reaction vessel, shortens the solution delivery time.Upper and lower part cylindrical container should have enough large intensity.At water delivering orifice 22 arranged outside electronic pressure gauge 3 and three-way valve 10, so that acting on rear solution, control acid solution and rock sample 19 carry out various physical chemistry test jobs.
Water sample part of detecting is mainly made up of water sampler 11, graduated cylinder 12, electronic balance 13, preferably there is graduated cylinder lid the water inlet of graduated cylinder 12, to reduce the evaporation of moisture, calculate the variation of rock sample 19 infiltration coefficient under acid solution corrodes by reading the flow of certain hour inner acidic solution.Electronic pressure gauge 13 for after measuring every one-level rock sample and reacting with acid solution at ducted pressure, by the change of three-way valve water delivering orifice, can change and calculate the percolation flow velocity of solution in rock samples at different levels inside by the infiltration coefficient of flow rate calculation and pressure differential.
Assembly method of the present utility model can be as follows:
(1), first near reaction unit entery and delivery port position placement water side permeable membrane 16, water inlet end permeable membrane 23, be used for the solid impurity in entery and delivery port solution in filtration experiment;
(2) rock sample preparing 19 is packed in reaction unit 7, rock sample 19 is tightly connected by upper airtight cushion rubber 17, lower airtight cushion rubber 20 and rock mass cushion rubber 18 with reaction unit;
(3) three reaction units are connected into Fig. 1 pattern by flow of solution pipeline and three-way valve 10, the rear connecting electronic tensimeter 3 of first order reaction device 7 and second order reaction device 8 and three-way valve 10, valve connects a three-way valve that is connected with water sampler 11 for 10 times again, the solution usage cylinder 12 oozing out is collected and is positioned on electronic balance and weighs 13, after third-order reaction device 9, only connect a three-way valve, valve lower accepting water sample collector 11 and graduated cylinder 12;
(4) acid solution apparatus container 5 is connected to middle concatenation pointer tensimeter 2 and electronic pressure gage 3 with nitrogen cylinder 1;
(5) first order reaction device 7 is connected with acid solution apparatus container 5, device is connected into as a whole, thereby formed complete water lithification acting device.
Process of the test is as follows:
(1) experimental solutions enters water lithification acting device 7 by acid solution apparatus container 5 under the pressure of high-pressure nitrogen bottle 1, and solution contacts with rock sample 19 after first filtering by the water side permeable membrane 16 in first order reaction device 7; (2) solution and rock sample 19 carry out abundant chemical action and penetrate rock sample 19 in reaction unit 7; (3) solution after water rock chemical action filters through water inlet end permeable membrane 23, then flows out reaction unit 7, controls three-way valve 10 and makes solution can only flow to the three-way valve below it, respectively percolating solution is carried out collection and the test of water sample; (4) rotate three-way valve 10 and allow solution can only enter second order reaction device 8, solution reacts with rock sample after filtering, and after reaction, solution still first flows to analytical test water delivering orifice, percolating solution is carried out to collection and the test of water sample; (5) rotate three-way valve and can only enter third-order reaction device 9 by solution, solution reacts with rock sample after filtering, after reaction, percolating solution is carried out to water sampling and test (percolating solution of reaction units at different levels is carried out to water sampling and the water analysis time interval is one day).
This device is horizontal installation as required, in order to ensure in reaction unit without gas residue, need make reaction unit with transparent material, and the installation of rock sample 19 must be carried out in deionization water tank.
Claims (4)
1. there is with rock stratum the test unit that acid erosion reacts in the vertical seepage flow of acidulous water, formed by environmental baseline simulation part, water rock reactive moieties, water sample part of detecting respectively, it is characterized in that: in the connecting line of nitrogen cylinder (1) and acid solution container (5), be provided with according to the order of sequence pointer pressure gauge (2), electronic pressure gauge (3) and wing bolt (4), the bottom of acid solution container (5) is provided with the water inlet (25) of the pipeline connection first order reaction device (7) of band valve (6);
Water rock reactive moieties comprises: first order reaction device (7) is assembled by upper shell (14) and lower house (27), one end of upper shell (14) inner chamber is flat cone-shaped and inner cylindrical cavity with the level, rock sample (19) is placed at step place, and cylindrical cavity top is connected with water inlet (25); Lower house (27) inner chamber is cone, cone base is connected with water delivering orifice (22), upper shell (14) intracavity diameter is slightly larger than lower house (27) diameter, upper shell bottom is provided with screw (21) along periphery, lower house (27) bottom is provided with the bolt hole (21) coordinating with ring flange (26), and upper shell (14) is connected with bolt by ring flange (26) with lower house (27); Lower house (27) middle part surface is provided with circle shape groove structure, is provided with gasket circle (24) in groove; Locate to set gradually stainless steel porous at upper shell inner chamber near water delivering orifice (22) and cross water steel disc (15) and water side permeable membrane (16);
Water sample part of detecting comprises: two covers are connected to first order reaction device (7) second order reaction device (8) and third-order reaction device (9) below in turn, their water delivering orifice is equipped with electronic pressure gauge and three-way valve (10), the water delivering orifice (22) of one termination first order reaction device (7) of three-way valve (10), the water inlet of one termination second order reaction device (8), the other end connects the water sampler (11) connecting and is placed on the graduated cylinder (12) on electronic balance (13); The connected mode of firsts and seconds reaction unit is consistent; Two water delivering orifices of three-way valve of third-order reaction device water outlet are directly connected with water sampler and the graduated cylinder being placed on electronic balance respectively.
2. there is with rock stratum the test unit that acid erosion reacts in the vertical seepage flow of a kind of acidulous water according to claim 1, it is characterized in that: lower house (27) inner chamber is provided with quartzose permeable membrane (23).
3. there is with rock stratum the test unit that acid erosion reacts in the vertical seepage flow of a kind of acidulous water according to claim 1, it is characterized in that: the two ends of rock sample (19) are provided with cushion rubber (18), the front and back of cushion rubber (18) are provided with airtight cushion rubber (17) and airtight cushion rubber (20).
4. there is with rock stratum the test unit that acid erosion reacts in the vertical seepage flow of a kind of acidulous water according to claim 1, it is characterized in that: between nitrogen cylinder (1) and container, be connected by pressure duct.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320815760.9U CN203595699U (en) | 2013-12-11 | 2013-12-11 | Test device for acidic water to vertically seep to make acid erosion reaction with rock stratum |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320815760.9U CN203595699U (en) | 2013-12-11 | 2013-12-11 | Test device for acidic water to vertically seep to make acid erosion reaction with rock stratum |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104077950A (en) * | 2014-07-18 | 2014-10-01 | 中国地质大学（武汉） | Dense rock mass water-rock dynamic reaction teaching experimental device and method |
| CN104597219A (en) * | 2014-12-26 | 2015-05-06 | 西南交通大学 | Water-rock chemical dynamic reaction double-system test unit |
| CN105181930A (en) * | 2015-09-07 | 2015-12-23 | 中国地质大学（北京） | Method and device for measuring chemical reaction and physical change of oil rock and water rock |
| CN105911221A (en) * | 2016-04-14 | 2016-08-31 | 河海大学 | Heavy metal ion curing product long-term stability test device and test method |
| CN108562526A (en) * | 2018-03-21 | 2018-09-21 | 中冶华天工程技术有限公司 | The experimental rig and test method of study two-dimensional and three dimensional fluid flow-soil particle Erosion Law |
-
2013
- 2013-12-11 CN CN201320815760.9U patent/CN203595699U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104077950A (en) * | 2014-07-18 | 2014-10-01 | 中国地质大学（武汉） | Dense rock mass water-rock dynamic reaction teaching experimental device and method |
| CN104597219A (en) * | 2014-12-26 | 2015-05-06 | 西南交通大学 | Water-rock chemical dynamic reaction double-system test unit |
| CN104597219B (en) * | 2014-12-26 | 2017-10-13 | 西南交通大学 | A kind of water rock chemical kinetic reaction dual system experimental rig |
| CN105181930A (en) * | 2015-09-07 | 2015-12-23 | 中国地质大学（北京） | Method and device for measuring chemical reaction and physical change of oil rock and water rock |
| CN105911221A (en) * | 2016-04-14 | 2016-08-31 | 河海大学 | Heavy metal ion curing product long-term stability test device and test method |
| CN108562526A (en) * | 2018-03-21 | 2018-09-21 | 中冶华天工程技术有限公司 | The experimental rig and test method of study two-dimensional and three dimensional fluid flow-soil particle Erosion Law |
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| 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: 20140514 Termination date: 20161211 |
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| CF01 | Termination of patent right due to non-payment of annual fee |