CN105203396B - One kind pollution soil body compression determination method for parameter - Google Patents
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Abstract
The invention discloses a kind of assay method for polluting soil body compression parameter, comprise the following steps：Step 10）Determine Polluted Soil natural moisture content, liquid limit and proportion, and uncontaiminated soil natural moisture content, liquid limit and proportion；Step 20）Soil solidifying experiment is carried out using single shaft consolidation apparatus method to uncontaiminated soil, the compression curve and yield stress of uncontaiminated soil is obtained；Step 30）Determine pollution level coefficientb；Step 40）With reference to Polluted Soil natural moisture content state, the compression curve of Polluted Soil is determined, the modulus of compressibility of Polluted Soil is determined：Step 50）According to step 40）The compression curve of the Polluted Soil of determination, obtains the cake compressibility of yielding stage Polluted Soil.The assay method can accurately and efficiently determine pollution soil body compression parameter.
Description
Technical field
The invention belongs to soil body sedimentation, deformation analysis technical field in Geotechnical Engineering, it particularly relates to a kind of Polluted Soil
Body compression determination method for parameter, is mainly used to determine the cake compressibility and modulus of compressibility of the pollution soil body.
Background technology
According to《Code for investigation of geotechnical engineering》(GB 50021-2001, version in 2009), the Polluted Soil origin cause of formation mainly includes industry
Tailings pollution soil caused by industrial pollution soil, mine tailing waste liquid and the acid solution of contaminated site, and percolate from garbage filling field enter
Ooze caused Polluted Soil.According to current understanding and applicable cases, Polluted Soil refers to due to the invasion of contaminants matter, causes the soil body
The soil of composition, structure and physico-mechanical properties significant variation.Therefore, for contaminated built and proposed place and ground with
And possible contaminated built and proposed place and ground, sedimentation and deformation gauge point counting analysis must fully realize pollutant to soil
The influence of compression property.
《Code for investigation of geotechnical engineering》(GB 50021-2001, version in 2009) points out that the laboratory test of Polluted Soil should basis
Contaminated sites feature and Practical Project demand carry out following experiment, including Polluted Soil chemical composition analysis, Polluted Soil physical mechanics
Property test；It is corrosive to built and proposed construction material to evaluate；The evaluation of environmentally safe influence；Pollute soil characteristics thing
Manage property test.In Polluted Soil evaluation procedure, should to clear and definite foundation bearing capacity in the evaluation of place and structure foundation and
Deformation parameter, predicts ground deformation behaviour.But pollutant is not perfect to the influence degree appraisement system of the engineering characteristic of soil,
The project features such as intensity, deformation, infiltration are subjected to overall merit, commented using index " project features rate of change "
Valency.This single index be used for contaminated foundation soil calculating method of settlement deformation analysis when, it is difficult to directly reflect pollutant to it is built with
Proposed place and the influence of foundation settlement deformation；It is then difficult for possible contaminated built and proposed place and foundation settlement deformation
To predict.
Polluted underground water, mine tailing waste liquid and acid solution and percolate from garbage filling field are to natural cohesive soil and Engineering Barrier Materials
Compression property have significantly affect；And the mutation of compression property will then change infiltration coefficient, diffusion coefficient and the chemistry of the soil body
Permeable membrane efficiency factor.Pollutant is complicated to the influencing factor of soil body compression, according to pollutant chemistry property and soil body class
The difference of type mainly includes：(1) compression of the inorganic cation to soil body particle electric double layer；(2) contaminated liquid pH value is to soil body particle
The change of surface charging property；(3) influence of the contaminated liquid viscosity to rate of consolidation；(4) contaminated liquid changes to clay mineral composition
Become, and the influence to natural consolidation material.Determine that the method for compression parameter is tested by soil solidifying to obtain, but exist
Following problem：(1) disturbance of the sampling to pollutant, soil sample and pore water；(2) volatility, semi-volatile organic matter concentration and change
Property is learned to change；(3) change of redox environment；(4) sample saturation contaminated liquid and the liquefaction credit analysis of sample hole it is time-consuming, into
This height, and cause instrument damage；(5) contaminated sites spatial distribution differences are big, cause laboratory test workload huge；(6) pollute
The toxic components such as thing and contaminated liquid, particularly volatile organic matter and Cr VI, to the health and safety risk of test operation personnel.
In addition, lacking in the foundation of compression model and process of calculation analysis for characterizing the front and rear compression Parameters variation of pollution
Calculating parameter.
The content of the invention
Technical problem：The technical problems to be solved by the invention are：A kind of survey for polluting soil body compression parameter is provided
Determine method, the assay method can accurately and efficiently determine pollution soil body compression parameter.
Technical scheme：In order to solve the above technical problems, the embodiment of the present invention is adopted the following technical scheme that：
A kind of assay method for polluting soil body compression parameter, the assay method comprises the following steps：
Step 10)：Determine Polluted Soil natural moisture content, liquid limit and proportion, and uncontaiminated soil natural moisture content, liquid
Limit and proportion；
Step 20)：Soil solidifying experiment is carried out using single shaft consolidation apparatus method to uncontaiminated soil, the compression of uncontaiminated soil is obtained
Curve and yield stress；
Step 30)：Determine pollution level coefficient b：It is true according to formula (1) by uncontaiminated soil and the liquid limit ratio of Polluted Soil
Determine parameter b：
B=-0.45LLR+0.67 formulas (1)
In formula, LLR table shows the ratio of uncontaiminated soil liquid limit and Polluted Soil liquid limit；
Step 40)：With reference to Polluted Soil natural moisture content state, the compression curve of Polluted Soil is determined according to formula (2), according to formula
(3) modulus of compressibility of Polluted Soil is determined：
In formula, Δ ei CRepresent the knots modification of Polluted Soil void ratio under i-stage load action；Represent i-stage load action
The average pore of lower Polluted Soil；Δei WRepresent the knots modification of uncontaiminated soil void ratio under i-stage load action；Represent i-stage
The average pore of uncontaiminated soil under load action；Ei WRepresent the modulus of compressibility of uncontaiminated soil under i-stage load action；Ei CRepresent
The modulus of compressibility of Polluted Soil under i-stage load action；P represents load, effective vertical stress in soil solidifying experiment；
pyRepresent the yield stress of uncontaiminated soil；
Step 50) according to step 40) determine Polluted Soil compression curve, obtain yielding stage Polluted Soil compression refer to
Number.
As preference, described Polluted Soil is inorganic heavy metal Polluted Soil, Organic Pollution soil, inorganic heavy metal and had
Machine thing combined pollution soil；The type of described Polluted Soil includes fine grained soil, special soils and the engineering barrier material prepared by composite soil
Material；Described Polluted Soil is in saturation state.
As preference, the clay mineral composition and content of described Polluted Soil and the clay mineral composition of uncontaiminated soil and
Content is identical.
It is used as preference, described step 40) in,Void ratio and loading 24 hours equal to uncontaiminated soil before loading
The average value of the void ratio of uncontaiminated soil afterwards.
It is used as preference, described step 40) in,Equal to after loading the void ratio of preceding Polluted Soil and loading 24 hours
The average value of the void ratio of Polluted Soil.
It is used as preference, described step 40) in, the yield stress of uncontaiminated soil is according to undisturbed soil and manipulated soil area
Point, the yield stress of undisturbed soil is equal to precosolidation pressure, and the yield stress of manipulated soil is equal to manipulated soil yield stress.
Beneficial effect：Compared with prior art, the embodiment of the present invention has advantages below：
At present, assay method there is no to can determine all kinds of pollution soil body compression parameters in the prior art.It is of the invention real
A kind of assay method of pollution soil body compression parameter of example offer is applied, using uncontaminated soil sample consolidation test result and pollution
Soil sample basic physical property index determines to only relate to single parameter b in Polluted Soil compression parameter, continuous mode.Parameter b tables
Influence degree of the pollution to the compression deflection characteristics of soil has been levied, has directly been reflected《Code for investigation of geotechnical engineering》(GB 50021-
2001,2009 years versions) define project features rate of change.
Determination method is tested compared to conventional compression deformation parameter, the assay method of the embodiment of the present invention simplifies pollution
Native consolidation test process, eliminates the error that sampling disturbance determines to exist to parameter, for the dirt under Complex Hydrogeological Conditions
Place compression parameter is contaminated to determine with easy, the efficient, advantage that the cycle is short, cost is low.It is not related to pollution in continuous mode
The chemical analysis of composition, it is to avoid the foul solution potential hazard to testing crew healthy and to test apparatus in experiment
Damage.
The assay method of the embodiment of the present invention, is widely used in all kinds of saturation Polluted Soils, including inorganic heavy metal pollutes, had
Machine thing pollutes fine grained soil, special soils and all kinds of Engineering Barrier Materials (composite soil) with inorganic heavy metal-Organic Pollution.
Brief description of the drawings
Yielding stage and surrender should in a kind of pollution soil body compression determination method for parameter that Fig. 1 provides for the present invention
Power determines schematic diagram.
Fig. 2 calculates Cu-W ore deposit expansion soil pressure for a kind of pollution soil body compression determination method for parameter that the present invention is provided
The comparison of contracting curve and measured result.
It is glutinous that Fig. 3 calculates seawater invasion pollution for a kind of pollution soil body compression determination method for parameter that the present invention is provided
Property native compression curve and measured result comparison.
Fig. 4 calculates organic contamination cohesive soil for a kind of pollution soil body compression determination method for parameter that the present invention is provided
The comparison of compression curve and measured result.
Parameter b and uncontaiminated soil in a kind of pollution soil body compression determination method for parameter that Fig. 5 provides for the present invention
With the liquid limit ratio relation figure of Polluted Soil.
Parameter b and cake compressibility in a kind of pollution soil body compression determination method for parameter that Fig. 6 provides for the present invention
Rate of change graph of a relation.
Embodiment
Technical scheme is described in detail with reference to the accompanying drawings and examples.
The embodiment of the present invention provides a kind of assay method for polluting soil body compression parameter, and the assay method includes as follows
Step：
Step 10)：Determine Polluted Soil natural moisture content, liquid limit and proportion, and uncontaiminated soil natural moisture content, liquid
Limit and proportion.Assay method according to《Highway earthwork test rule》(JTG E40-2007) determines the day of Polluted Soil and uncontaiminated soil
The method of right moisture content, liquid limit and proportion is carried out.Pollutant is avoided in the gravity test of Polluted Soil in solution dissolution, Polluted Soil
Using scene contaminated liquid regulation moisture content in situ in liquid limit test.
Step 20)：Soil solidifying experiment is carried out using single shaft consolidation apparatus method to uncontaiminated soil, the compression of uncontaiminated soil is obtained
Curve and yield stress.The abscissa of compression curve is yield stress, and ordinate is native void ratio；Coordinate system is sat for single pair of number
Mark system, abscissa is denary logarithm reference axis.Process of the test be referred to according to《Highway earthwork test rule》(JTG
E40-2007)。
Step 30)：Determine pollution level coefficient b：It is true according to formula (1) by uncontaiminated soil and the liquid limit ratio of Polluted Soil
Determine parameter b：
B=-0.45LLR+0.67 formulas (1)
In formula, LLR table shows the ratio of uncontaiminated soil liquid limit and Polluted Soil liquid limit；
Step 40)：With reference to Polluted Soil natural moisture content state, the compression curve of Polluted Soil is determined according to formula (2), according to formula
(3) modulus of compressibility of Polluted Soil is determined：
In formula, Δ ei CRepresent the knots modification of Polluted Soil void ratio under i-stage load action；Represent i-stage load action
The average pore of lower Polluted Soil；Δei WRepresent the knots modification of uncontaiminated soil void ratio under i-stage load action；Represent i-stage
The average pore of uncontaiminated soil under load action；Ei WRepresent the modulus of compressibility of uncontaiminated soil under i-stage load action；Ei CRepresent
The modulus of compressibility of Polluted Soil under i-stage load action；P represents load, effective vertical stress in soil solidifying experiment；
pyRepresent the yield stress of uncontaiminated soil；
Step 40) in, using the natural moisture content of Polluted Soil as initial aqueous rate, determine Polluted Soil each by formula (2)
Void ratio under level load action, void ratio-effective vertical stress relation curve is drawn under single logarithmic coordinates, compression is used as
Curve.
Step 50) according to step 40) determine Polluted Soil compression curve, obtain yielding stage Polluted Soil compression refer to
Number.According to compression curve, according to《Highway earthwork test rule》The regulation of (JTG E40-2007) determines cake compressibility,
The pollution soil body compression parameter mentioned in the embodiment of the present invention, specifically includes the compression including polluting the soil body and refers to
Number and modulus of compressibility.Cake compressibility provides Polluted Soil compression curve by formula (2) and determined.Modulus of compressibility is determined according to formula (3).
Pollution level coefficient b characterizes influence degree of the pollution to the compression deflection characteristics of soil.As an example, parameter b is less than 0.24
Influence degree is slight, and parameter b is medium between 0.24~0.31 influence degree, and it is big that parameter b is more than 0.31 influence degree.Pollution is to soil
Compression deflection characteristics influence degree definition according to《Code for investigation of geotechnical engineering》(GB 50021-2001, version in 2009)
Perform.
In the above-described embodiments, preferably, described Polluted Soil is inorganic heavy metal Polluted Soil, Organic Pollution
Soil, or inorganic heavy metal and organic compound contaminated soil.The type of described Polluted Soil includes fine grained soil, special soils and by mixing
Close Engineering Barrier Materials prepared by soil.The definition of fine grained soil and special soils according to《Highway earthwork test rule》(JTG E40-
2007) determine.Described Polluted Soil is in saturation state.The clay mineral composition and content and uncontaiminated soil of described Polluted Soil
Clay mineral composition and content it is identical.Polluted Soil source includes Polluted Soil in situ and prepares artificial contamination's soil with laboratory.For
Contaminated built and proposed place and the Polluted Soil in situ of ground, by thin-wall sampler obtain contaminated site Polluted Soil and
Periphery neighborhood uncontaiminated soil, the clay mineral composition and content and Polluted Soil of uncontaiminated soil are ensured with reference to geology prospecting report
Unanimously.For laboratory preparation artificial contamination's soil, the main soil of uncontaiminated soil and Polluted Soil need to be consistent, contaminated liquid and main soil property
Amount is than being more than 2:1, Polluted Soil curing time need to be more than 7 days, and uniform stirring should be carried out at interval of 1 day during maintenance.
Preferably, described step 40) in,It is small equal to the void ratio of uncontaiminated soil before loading and loading 24
When after uncontaiminated soil void ratio average value.Equal to Polluted Soil after loading the void ratio of preceding Polluted Soil and loading 24 hours
Void ratio average value.Certainly,WithIt can also determine by other means.It is only one herein to be preferable to carry out
Example.In step 40) in, the yield stress of uncontaiminated soil is distinguished according to undisturbed soil and manipulated soil, the yield stress of undisturbed soil
Equal to precosolidation pressure, the yield stress of manipulated soil is equal to manipulated soil yield stress.In-situ soil precosolidation pressure is using card
Sa Gelan morals method is determined.
The embodiment of the present invention is based on state of disturbance theory, and state is corresponding after material response is status of relative intact status and adjusted
Weighted average, and be described by mean state and Discontinuous Factors.Soil body compression is contaminated thing and vertical load is made
The response of used time, only considers that state answers bulk strain tensor variable quantity to respond after regulation, controls status of relative intact status strain tensor
In nought state, it is described by Discontinuous Factors.Wherein, state volume strain tensor variable quantity is responded after regulation, characterizes institute
Soil body bulk strain tensor variable quantity before correspondence pollution.Therefore, when soil body compression is contaminated thing and vertical uniform load q
Pollution soil body bulk strain tensor variable quantity, which can simplify, to be expressed as：
In formula (4),Represent pollution soil body bulk strain tensor variable quantity；Represent that state volume is strained after regulation
Tensor variable quantity is responded, and characterizes soil body bulk strain tensor variable quantity before corresponding pollution；1-b for bulk strain disturbance because
Son, can determine that by obtaining pollution level coefficient b.
The embodiment of the present invention effectively solves the problem of Polluted Soil compression property Accurate Determining, realizes by uncontaminated soil pressure
The change of liquid limit value carries out the sedimentation of all kinds of contaminated foundation soils, deformation gauge point counting analysis before and after contracting curve and pollution；Calculating parameter is led to
Cross traditional geotechnical testament method to determine, the chemical analysis of pollutant component is not related to, engineer applied is easy, feasible, efficient；Avoid
Damage of the pollutant to test apparatus in experiment.
Example is for an application example below.
Soil 1, soil 2 prepare lead contamination soil to be artificial；Soil 3, soil 4 prepare Cu-W ore deposit soil to be artificial；Prepare tetrachloro
Change carbon, diesel oil and kerosene contaminated soil 5；Soil 6, soil 7 and soil 8 are seawater invasion Polluted Soil in situ.
Lead contamination soil, Cu-W ore deposit soil, and carbon tetrachloride, diesel oil and kerosene Polluted Soil are that laboratory prepares artificial contamination
The main soil of soil, uncontaiminated soil and Polluted Soil need to be consistent.Lead contamination uses lead nitrate solution, concentration be 60mmol/L,
120mmol/L、600mmol/L；Cu-W ore deposit uses copper nitrate solution, and concentration is 100mmol/L, 200mmol/L, 1000mmol/
L.In preparation process, contaminated liquid is 2 with main native mass ratio control:1, Polluted Soil curing time 10 days should be at interval of 1 during maintenance
It carries out the uniform stirring of 5 minutes.For by seawater invasion contaminated soil 6, soil 7 and soil 8, passing through thin-wall sampler
Obtain contaminated site Polluted Soil and uncontaminated region in-situ soil is closed on periphery, the glutinous of uncontaiminated soil is confirmed with reference to geology prospecting report
Native mineralogical composition and content are consistent with Polluted Soil.In experiment, soil 6, soil 7 and soil 8, by mix again, are manipulated soil.
All Polluted Soils meet《Highway earthwork test rule》(JTG E40-2007) defines the definition of fine grained soil or composite soil.
The pollution soil body compression determination method for parameter step that this application example is used is as follows：
Step 10)：According to《Highway earthwork test rule》(JTG E40-2007) determines the day of Polluted Soil and uncontaiminated soil
Right moisture content, liquid limit and proportion.In the gravity test of lead contamination soil, Cu-W ore deposit soil and seawater invasion Polluted Soil, using kerosene generation
For distilled water, it is to avoid pollutant is in solution dissolution.In the liquid limit test of lead contamination soil, Cu-W ore deposit soil and seawater invasion Polluted Soil,
Configured plumbi nitras, copper nitrate, and carbon tetrachloride, diesel oil and kerosene regulation moisture content is respectively adopted；The liquid limit of Polluted Soil
Using scene underground water regulation moisture content in situ in experiment.
Step 20)：According to《Highway earthwork test rule》(JTG E40-2007) carries out the soil body using single shaft consolidation apparatus method
Consolidation test obtains the compression curve and its yield stress of uncontaminated soil sample, and sample carries out saturated process before experiment.
Step 30)：According to step 10) liquid limit is determined, the liquid limit ratio of uncontaiminated soil and Polluted Soil is calculated, and according to formula
(1) parameter b is determined.
B=-0.45LLR+0.67 formulas (1)
Step 40)：The initial aqueous rate that laboratory prepares the corresponding uncontaiminated soil sample of artificial contamination's soil takes its liquid limit；It is former
Uncontaiminated soil sample corresponding to the seawater invasion Polluted Soil of position is determined dirty using natural moisture content as initial aqueous rate by formula (2)
Void ratio of the dye soil under load actions at different levels, draws void ratio-effective vertical stress relation curve under single logarithmic coordinates,
The modulus of compressibility of the Polluted Soil under load actions at different levels is calculated by formula (3).
Fig. 2 be this application example in, the curve map of lead contamination swelled ground compression curve and measured result.In figure, abscissa
Yield stress is represented, unit takes kPa, is denary logarithm reference axis；Ordinate represents the void ratio of soil, dimensionless.Figure
Middle solid dot is carried out the measured result of the lead contamination swelled ground compression curve of soil solidifying experiment by single shaft consolidation apparatus method；Curve
To be determined compression curve by the method for the embodiment of the present invention.
Fig. 3 be this application example in, the curve map of Cu-W ore deposit swelled ground compression curve and measured result.In figure, abscissa
Yield stress is represented, unit takes kPa, is denary logarithm reference axis；Ordinate represents the void ratio of soil, dimensionless.Figure
Middle solid dot is carried out the measured result of the Cu-W ore deposit swelled ground compression curve of soil solidifying experiment by single shaft consolidation apparatus method；Curve
To be determined compression curve by the method for the embodiment of the present invention.
Fig. 4 be this application example in, the comparison of organic contamination cohesive soil compression curve and measured result.In figure, abscissa
Yield stress is represented, unit takes kPa, is denary logarithm reference axis；Ordinate represents the void ratio of soil, dimensionless.Figure
Middle solid dot is carried out the measured result of the organic contamination cohesive soil compression curve of soil solidifying experiment by single shaft consolidation apparatus method；It is bent
Line is is determined compression curve by the method for the embodiment of the present invention.
Fig. 5 is in this application example, the curve map of cohesive soil compression curve and measured result is polluted in seawater invasion.In figure,
Abscissa represents yield stress, and unit takes kPa, is denary logarithm reference axis；Ordinate represents the void ratio of soil, immeasurable
Guiding principle.The reality of cohesive soil compression curve is polluted in the seawater invasion that solid dot carries out soil solidifying experiment by single shaft consolidation apparatus method in figure
Survey result；Curve is is determined compression curve by the method for the embodiment of the present invention.
Results showed that from Fig. 2 to Fig. 5 is tested using soil solidifying determines that the void ratio of Polluted Soil-effective is erected
The assay method acquired results of the pollution soil body compression parameter provided to stress relation curve and present invention method
It is consistent.
Step 5：According to《Highway earthwork test rule》(JTG E40-2007), on acquired Polluted Soil compression curve
Yielding stage Polluted Soil cake compressibility is determined by linear fit.
During Fig. 6 is this application example, environmental pollution coefficient b and cake compressibility rate of change graph of a relation.Wherein, environmental pollution system
Number b is calculated according to the liquid limit value before and after soil pollution and formula (1) and determined；The cake compressibility of uncontaiminated soil according to《Highway geotechnique's examination
Test code》(JTG E40-2007) defined method is determined；The cake compressibility of Polluted Soil passes through calculated environmental pollution coefficient
B, the Polluted Soil compression curve calculated according to formula (2) is determined.Cake compressibility rate of change according to《Code for investigation of geotechnical engineering》(GB
50021-2001, version in 2009) definition calculated, the difference of cake compressibility and the compression of uncontaiminated soil refer to before and after referring to pollution
Several ratio.Result shows shown in Fig. 6, exists between the environmental pollution coefficient b and cake compressibility rate of change of all kinds of Polluted Soils good
Good positive correlation, y=0.38x+0.2 is expressed as with formula, wherein, y represents that environmental pollution coefficient b, x represent that cake compressibility becomes
Rate.Linear fit result shows that the coefficient of determination is 0.778.
Based on this, environmental pollution coefficient b characterizes influence degree of the pollution to the compression deflection characteristics of soil, and parameter b is less than
0.24 influence degree is slight, and parameter b is medium between 0.24~0.31 influence degree, and it is big that parameter b is more than 0.31 influence degree.Pollution
To soil compression deflection characteristics influence degree definition according to《Code for investigation of geotechnical engineering》(GB 50021-2001,2009
Version) perform.Therefore, being capable of each pollutant of Fast Evaluation and difference by liquid limit result and convolution (1) before and after the pollution of soil
The compressibility variation tendency of the lower contaminated site foundation soil of pollution level effect and Engineering Barrier Materials, in geotechnical engineering investigation report
In clearly《Code for investigation of geotechnical engineering》Compression of the pollution defined in (GB 50021-2001, version in 2009) to soil is special
The influence degree of property.
The assay method of the embodiment of the present invention is directed to all kinds of pollution type soil bodys, has carried out effective checking by experiment, has tested
Reasonability, the dependable with function of assay method of the present invention are demonstrate,proved.General principle, the master of the present invention has been shown and described above
Want feature and advantage.Those skilled in the art is above-mentioned specific it should be appreciated that the present invention is not limited by above-mentioned specific embodiment
Description in embodiment and specification is intended merely to further illustrate the principle of the present invention, is not departing from spirit and scope of the invention
On the premise of, various changes and modifications of the present invention are possible, and these changes and improvements both fall within scope of the claimed invention
It is interior.The scope of protection of present invention is by claims and its equivalent thereof.
Claims (6)
1. a kind of assay method for polluting soil body compression parameter, it is characterised in that the assay method comprises the following steps：
Step 10)：Determine natural moisture content, liquid limit and the proportion of Polluted Soil, and the natural moisture content of uncontaiminated soil, liquid limit and
Proportion；
Step 20)：Soil solidifying experiment is carried out using single shaft consolidation apparatus method to uncontaiminated soil, the compression curve of uncontaiminated soil is obtained
And yield stress；
Step 30)：Determine pollution level coefficient b：By Polluted Soil and the liquid limit ratio of uncontaiminated soil, determine to join according to formula (1)
Number b：
B=-0.45LLR+0.67 formulas (1)
In formula, LLR table shows the ratio of Polluted Soil liquid limit and uncontaiminated soil liquid limit；
Step 40)：With reference to Polluted Soil natural moisture content state, the compression curve of Polluted Soil is determined according to formula (2), according to formula (3)
Determine the modulus of compressibility of Polluted Soil：
In formula, Δ ei CRepresent the knots modification of Polluted Soil void ratio under i-stage load action；Represent dirty under i-stage load action
Contaminate the average pore ratio of soil；Δei WRepresent the knots modification of uncontaiminated soil void ratio under i-stage load action；Represent i-stage lotus
The average pore ratio of the lower uncontaiminated soil of load effect；Ei WRepresent the modulus of compressibility of uncontaiminated soil under i-stage load action；Ei CRepresent
The modulus of compressibility of Polluted Soil under i-stage load action；P represents load, effective vertical stress in soil solidifying experiment；
pyRepresent the yield stress of uncontaiminated soil；
Step 50) according to step 40) determine Polluted Soil compression curve, obtain yielding stage Polluted Soil cake compressibility.
2. according to the assay method of the pollution soil body compression parameter described in claim 1, it is characterised in that described pollution
Soil is inorganic heavy metal Polluted Soil, Organic Pollution soil, inorganic heavy metal and organic compound contaminated soil；Described Polluted Soil
Type includes fine grained soil, special soils and the Engineering Barrier Materials prepared by composite soil；Described Polluted Soil is in saturation state.
3. according to the assay method of the pollution soil body compression parameter described in claim 1 or 2, it is characterised in that described
The clay mineral composition and content of Polluted Soil are identical with the clay mineral composition and content of uncontaiminated soil.
4. according to the assay method of the pollution soil body compression parameter described in claim 1, it is characterised in that described step
40) in,Equal to the average value of the void ratio of uncontaiminated soil after loading the void ratio of preceding uncontaiminated soil and loading 24 hours.
5. according to the assay method of the pollution soil body compression parameter described in claim 1, it is characterised in that described step
40) in,Equal to the average value of the void ratio of Polluted Soil after loading the void ratio of preceding Polluted Soil and loading 24 hours.
6. according to the assay method of the pollution soil body compression parameter described in claim 1, it is characterised in that described step
40) in, the yield stress of uncontaiminated soil is distinguished according to undisturbed soil and manipulated soil, and the yield stress of undisturbed soil is equal in advance admittedly
Knot pressure power, the yield stress of manipulated soil is equal to manipulated soil yield stress.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949805A (en) * | 2010-09-15 | 2011-01-19 | 上海岩土工程勘察设计研究院有限公司 | Method for testing physical and mechanical properties of acid contaminated soil |
Non-Patent Citations (4)
| Title |
|---|
| Analysis of the compression of structured soils using the disturbed state concept;M.D.Liu et al.;《Int.J.Numer.Anal.Meth.Geomech》;20001231;第24卷;第723-735页 * |
| Modeling Compression Behavior of Structured Geomaterials;Martin D. Liu et al.;《Int. J. Geomech》;20031231;第3卷;第191-204页 * |
| 酸性污染土物理力学性质的室内试验研究;曹海荣;《湖南科技大学学报（自然科学版）》;20120630;第27卷(第2期);第60-65页 * |
| 酸碱污染土压缩特性的室内试验研究;朱春鹏等;《岩土工程学报》;20081031(第10期);第1477-1483页 * |
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