CN109884131A - One kind soil layer in submerging test of testing pits soaks lossless continuous probe method - Google Patents
One kind soil layer in submerging test of testing pits soaks lossless continuous probe method Download PDFInfo
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- CN109884131A CN109884131A CN201910134472.9A CN201910134472A CN109884131A CN 109884131 A CN109884131 A CN 109884131A CN 201910134472 A CN201910134472 A CN 201910134472A CN 109884131 A CN109884131 A CN 109884131A
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Abstract
The invention discloses one kind soil layers in submerging test of testing pits to soak lossless continuous probe method, comprising steps of interior punching of testing pits before one, immersion samples；Two, high density survey line is laid；Three, it obtains resistivity data before soaking and obtains the resistivity profile figure of corresponding section；Four, it obtains during immersion and resistivity data and obtains the resistivity profile figure of corresponding section after immersion；Five, interior punching of testing pits after soaking samples；Six, data comparison determines that soil layer soaks the aqueous rate score of soil layer of the diffusion rate and soil layer different location of range, water in unsaturated soil.The present invention is by punching sampling in testing pits respectively before immersion and after immersion, obtain the association corresponding relationship of the corresponding resistivity value of the aqueous rate score of a soil layer, the soil layer resistivity value of the inside and outside soil layer different location of testing pits measured by different time points high-density electric obtains the aqueous rate score of soil layer of corresponding soil layer position, test site punching sampling need not be expired, be approximately lossless detection.
Description
Technical field
The invention belongs to soil layers to soak detection technology field, and in particular to one kind test pits soil layer in submerging test soak it is lossless
Continuous probe method.
Background technique
Submerging test of testing pits is to study collapsible soil place to the response pattern of immersion, determines place saturated yielding type and ground
The common method of saturated yielding grade.When test pits submerging test when, often need measure immersion front and back test pits in, outer soil layer of testing pits hang down
It is straight and horizontal direction to soak situation, for determining that immersion influence depth and horizontal direction soak range.Existing method is to pass through
In testing pits, outer specific position drill sampling test of testing pits, the water-cut variation of immersion front and back soil layer is compared to determine soil layer
Soak situation.Specific practice is: firstly, before immersion, in outer, interior punching sampling and testing of testing pits of testing pits, the moisture content of each hole soil sample
Initial aqueous rate as preceding place of soaking；Then, during immersion, after the Collapsing Deformation of soil layer is stablized, around testing pits
Or side compares the situation of change of the moisture content of soil layer immersion front and back close to punching sampling again by aforementioned drilling, determination is tested pits
Outer soaks boundary；Finally, in interior uniform punching of testing pits, comparing the variation of the moisture content of soil layer immersion front and back after stopping immersion
Situation determines in testing pits and soaks boundary.The soil layer that this method is only capable of obtaining finite time point soaks situation, can not it is intuitive,
The wetting process for completely obtaining submerging test process soil layer, can not also establish between soil layer Collapsing Deformation amount and water-cut variation
Dynamic corresponding relationship.It needs to drill, sample and test again to obtain the more water cut test data of different time points,
Intricate operation, and expend a large amount of manpower and material resources.
Another common method is to bury multiple soil moisture meters to soil in inside and outside different location different depth of testing pits
Layer moisture content carries out dynamic test, but soil moisture meter is changed between the property for causing dielectric property to change using soil's water content
The volumetric water content of measurement soil is connect, and common moisture content parameter is quality moisture content in engineering.Volumetric water content contains with quality
Theoretical conversion relation between water rate isWherein: θ is volumetric water content, and ω is quality moisture content, ρdFor the dry of soil
Density, ρωFor the density of water, is demarcated due to the factory of soil moisture meter and use the properties such as soil and soil property, the mineralogical compositions of test beds
It has differences, often leads to using theoretical formulaCarrying out data conversion, there are large errors, therefore, also need at the scene
Carry out a large amount of staking-out work.In addition, the cost for adding purchase soil moisture meter is excessively high and can not recycle and reuse, and not
A large amount of bore operations that installation and sampling and testing with deep soil moisture meter need, not only system engineering amount is big, fund and people
Work consumption is too high, and place will appear a large amount of drilling hole, and the original foundation structure of destructible can also have a Dingan County simultaneously
Full hidden danger.
Summary of the invention
It tests pits immersion in view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing one kind
Soil layer soaks lossless continuous probe method in test, by punching sampling in testing pits before immersion, obtains in testing pits before soaking not
With the soil layer moisture content of depth, resistivity data before the immersion tested pits on inside and outside different depth is obtained using high-density electric, is led to
It crosses in testing pits after immersion and punches sampling again, the soil layer moisture content for interior different depth of testing pits after obtaining immersion, benefit
Resistivity data after the immersion tested pits on interior different depth is obtained with high-density electric, obtains the aqueous rate score of soil layer
The association corresponding relationship of a corresponding resistivity value tests pits inside and outside soil layer not by what different time points high-density electric measured
Soil layer resistivity value with position obtains the aqueous rate score of soil layer of corresponding soil layer position, it is not necessary to full test site punching sampling
Or installation soil moisture meter, it is approximately lossless detection, convenient for promoting the use of.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: one kind soil layer in submerging test of testing pits soaks
Lossless continuous probe method, which is characterized in that method includes the following steps:
Step 1: interior punching sampling of testing pits before immersion: being punched before immersion in bottom of testing pits, test pits and beat before being soaked
Hole is sampled work to punching of testing pits before immersion, tests pits before immersion and punches interior sampling interval as n, the unit of n is m, according to public affairs
FormulaIt calculates to test pits before soaking and punches the soil layer moisture content w of interior different depth1, wherein mBeforeTo test pits before immersion
Punch the quality of the original soil sample of different depth position, mIt is preceding dryIt punches different depth position to test pits before immersion and corresponds to original soil sample
Quality after drying indoors, the cross section tested pits are circle；
Step 2: laying high density survey line: centered on the center of circle tested pits, being laid on the ground of test site and both pass through examination
The first high density survey line and the second high density survey line in the center of circle are cheated, and the first high density survey line and the second high density survey line are perpendicular
It lays, the first high density survey line and the second high density survey line include high density measurement cable and multiple be both connected to high density
The monitoring electrode of the soil body is measured on cable and is inserted perpendicularly into, multiple monitoring electrodes are equidistantly laid in column, high density measurement electricity
Cable is connect with high-density resistivity measurement host；
Step 3: obtain soak before resistivity data and obtain the resistivity profile figure of corresponding section: by for high density
The multiple monitoring electrodes connected on measurement cable, which are powered, to pressurize, and is detected using high-density electric to test site ground,
Resistivity data Ω before the immersion tested pits on inside and outside soil layer different depth in acquisition test site ground1, by the test site of acquisition
Resistivity data Ω before the immersion tested pits on inside and outside soil layer different depth in ground ground1It is transmitted to high-density resistivity measurement master
Machine, high-density resistivity measure host to resistivity number before the immersion tested pits on inside and outside soil layer different depth in the ground of test site
According to Ω1Analysis inversion procedure is carried out, it is preceding different deep that inside and outside soil layer immersion of testing pits in a secondary reflection test site ground can be drawn out
The resistivity profile figure of section is corresponded on degree；
Step 4: resistivity data and obtaining the resistivity profile of corresponding section during obtaining immersion and after immersion
Figure: the first high density survey line described in step 2 and the second high density survey line are without recycling during immersion, according to engineering need
It asks, can be continuously monitored after immersion of testing pits, it is different continuously to measure inside and outside soil layer different time points of testing pits in the ground of test site
Resistivity data Ω during the immersion of depthi, inside and outside soil layer different time points will be tested pits in the test site ground of acquisition not
With resistivity data Ω during the immersion of depthiIt is transmitted to high-density resistivity measurement host, high-density resistivity measurement master
Machine is to resistivity data Ω during the immersion for inside and outside soil layer different time points different depth of testing pits in the ground of test siteiIt carries out
Inversion procedure is analyzed, different time points are not during can drawing out inside and outside soil layer immersion of testing pits in more secondary reflection test site ground
With the resistivity profile figure of the correspondence section of depth；
After immersion, test site ground is detected using high-density electric, obtains in the ground of test site and tries
Resistivity data Ω after immersion inside and outside cheating on soil layer different depthm, will test pits in the test site ground of acquisition inside and outside
Resistivity data Ω after immersion on soil layer different depthmIt is transmitted to high-density resistivity measurement host, high density resistor
Resistivity data Ω after rate measures host to the immersion tested pits on inside and outside soil layer different depth in the ground of test sitemIt carries out
Inversion procedure is analyzed, it is right on different depth after inside and outside soil layer of testing pits in a secondary reflection test site ground soaks to draw out
Answer the resistivity profile figure of section；
Step 5: interior punching sampling of testing pits after immersion: after immersion terminates, soil body Collapsing Deformation is stablized, at bottom of testing pits
Portion and it is located at before immersion to test pits and punches side and punched, punching of testing pits after soak is punched to testing pits after immersion to sample
Interval n is sampled work, according to formulaCalculate immersion after test pits punch interior different depth soil layer it is aqueous
Rate wm, wherein mAfterwardsThe quality of the original soil sample of different depth position, m are punched to test pits after immersionAfter doFor punching of testing pits after immersion
Different depth position corresponds to the quality after original soil sample is dried indoors；
Step 6: data comparison determines that soil layer soaks the diffusion rate of range, water in unsaturated soil and soil layer difference position
The aqueous rate score of the soil layer set: according to resistivity data before the immersion tested pits on different depth in the ground of test site in step 3
Ω1With resistivity during the immersion of different time points different depth during immersion of testing pits in the ground of test site in step 4
Data ΩiComparison, and by test pits in the ground of test site soak before correspond on different depth the resistivity profile figure of section with
It tests pits in the ground of test site and corresponds to the resistivity profile figure comparison of section after soaking on different depth, tried after being soaked
The inside and outside soil layer vertically and horizontally in hole soaks range；
According to resistivity data Ω before the immersion tested pits on different depth in the ground of test site in step 31And step 4
Test pits in middle test site ground immersion during different time points different depth immersion during resistivity data ΩiIt is right
Than obtaining inside and outside vertically and horizontally upper diffusion rate of the water in unsaturated soil of testing pits；
The soil layer moisture content w of interior different depth is punched according to testing pits before soaking in step 11With in step 5 soak after try
Punch the soil layer moisture content w of interior different depth in holemComparison, can accurately obtain the range of soaking tested pits on interior vertical direction, simultaneously
It tests pits before soaking in step 1 and punches the soil layer moisture content w of interior different depth1With test pits in the ground of test site in step 3
Resistivity data Ω before immersion on different depth1It is corresponded, testing pits after soaking in step 5, it is interior different deep to punch
The soil layer moisture content w of degreemWith resistivity data after the immersion tested pits on different depth in the ground of test site in step 4
ΩmIt is corresponded and is verified, obtain the association corresponding relationship of the corresponding resistivity value of the aqueous rate score of a soil layer,
The soil layer resistivity value of the inside and outside soil layer different location of testing pits measured by different time points high-density electric obtains corresponding soil
The aqueous rate score of soil layer of layer position.
Above-mentioned one kind soil layer in submerging test of testing pits soaks lossless continuous probe method, it is characterised in that: in step 1
It is punched in such a way that Luoyang Spade is by Manual punching in bottom of testing pits before immersion, punching of testing pits before being soaked, immersion
Before test pits and punch interior sampling interval n and meet: 0.1m≤n≤0.5m；
After immersion terminates in step 5, soil body Collapsing Deformation is stablized, tried in such a way that Luoyang Spade is by Manual punching
Hole bottom and it is located at before immersion to test pits and punches side and punched, punching of testing pits after being soaked.
Above-mentioned one kind soil layer in submerging test of testing pits soaks lossless continuous probe method, it is characterised in that: in step 1
It is punched by the way of drilling machine automatic punching in bottom of testing pits before immersion, punching of testing pits before being soaked, examination before soaking
It punches interior sampling interval n and meets in hole: n=0.5m or n=1.0m；
After immersion terminates in step 5, soil body Collapsing Deformation is stablized, at bottom of testing pits by the way of drilling machine automatic punching
Portion and it is located at before immersion to test pits and punches side and punched, punching of testing pits after being soaked.
Compared with the prior art, the present invention has the following advantages:
1, for the present invention by punching sampling in testing pits before immersion, the soil layer for interior different depth of testing pits before acquisition immersion is aqueous
Rate obtains resistivity data before the immersion tested pits on inside and outside soil layer different depth using high-density electric, aqueous to obtain soil layer
The association corresponding relationship that rate score corresponds to resistivity value provides basic data reference, convenient for promoting the use of.
2, the present invention by obtain during immersion and immersion after resistivity data and obtain the resistance of corresponding section
Rate sectional view can intuitively, completely obtain immersion process soil layer moisture content dynamic changing process, obtain soil layer in different soaking times
Point soaks range, can also calculate diffusion velocity of the water in unsaturated soil, reliable and stable, using effect is good.
3, high density survey line of the present invention only needs disposably to arrange, detecting parameter is set in advance, only needs during test
Technician triggers instrument start key in different time points according to test requirements document and can detect, it can be achieved that submerging test process
The real-time, continuous of soil layer water-cut variation, fixed point monitoring reduce the labor intensity of water cut test work, improve working efficiency.
4, the method for the present invention step is simple, and by punching sampling in testing pits after immersion again, obtaining immersion terminates
It tests pits afterwards the soil layer moisture content of interior different depth, the immersion knot tested pits on inside and outside soil layer different depth is obtained using high-density electric
Resistivity data after beam obtains the aqueous rate score of soil layer in conjunction with middle soil layer moisture content and the resistivity data of testing pits before immersion
The association corresponding relationship of a corresponding resistivity value tests pits inside and outside soil layer not by what different time points high-density electric measured
Soil layer resistivity value with position obtains the aqueous rate score of soil layer of corresponding soil layer position, it is not necessary to full test site punching sampling
Or installation soil moisture meter, it is approximately lossless detection, it is easy to implement, measuring speed is fast, reproducible, precision is high, it can effectively control
Construction cost processed, convenient for promoting the use of.
In conclusion the present invention obtains interior different depth of testing pits before soaking by punching sampling in testing pits before immersion
Soil layer moisture content obtains resistivity data before the immersion tested pits on inside and outside soil layer different depth using high-density electric, by
Sampling is punched in testing pits after immersion again, the soil layer moisture content for interior different depth of testing pits after obtaining immersion utilizes height
Density electrical method obtains resistivity data after the immersion tested pits on inside and outside soil layer different depth, obtains a soil layer moisture content number
It is worth the association corresponding relationship of a corresponding resistivity value, the inside and outside soil layer of testing pits measured by different time points high-density electric
The soil layer resistivity value of different location obtains the aqueous rate score of soil layer of corresponding soil layer position, it is not necessary to which full test site punching takes
Sample or installation soil moisture meter, are approximately lossless detection, convenient for promoting the use of.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is high density survey line of the present invention and the laying relation schematic diagram tested pits.
Fig. 2 is the A-A cross-sectional view of Fig. 1.
Fig. 3 is the resistivity for corresponding to section before testing pits inside and outside soil layer immersion in test site ground of the present invention on different depth
Section grayscale image.
Fig. 4 is pair that different depth is sometime put during testing pits inside and outside soil layer immersion in test site ground of the present invention
Answer the resistivity profile grayscale image of section.
Fig. 5 is the electricity for corresponding to section after testing pits inside and outside soil layer immersion in test site ground of the present invention on different depth
Resistance rate section grayscale image.
Fig. 6 is that the present invention is tested pits before interior immersion and punching sampling measures soil layer plot of water cut schematic diagram after immersion.
Fig. 7 be the present invention test pits before interior immersion, soil layer resistivity number after certain time point and immersion during immersion
According to curve synoptic diagram.
Fig. 8 is method flow block diagram of the invention.
Description of symbols:
1-tests pits；2-the first high density survey line；3-the second high density survey line；
It tests pits punching before 4-immersions；It tests pits punching after 5-immersions；
6-high-density resistivities measure host；7-high density measure cable；
8-monitoring electrodes；9-test sites ground.
Specific embodiment
As shown in Figures 1 to 8, one kind of the invention soil layer in submerging test of testing pits soaks lossless continuous probe method, wraps
Include following steps:
Step 1: interior punching sampling of testing pits before immersion: being punched before immersion in 1 bottom of testing pits, tested pits before being soaked
Punching 4, to testing pits before immersion, punching 4 is sampled work, and sampling interval is n in punching 4 of testing pits before immersion, and the unit of n is m,
According to formulaCalculate the soil layer moisture content w of different depth in punching 4 of testing pits before soaking1, wherein mBeforeFor leaching
The quality of the original soil sample for 4 different depth positions of punching of testing pits before water, mIt is preceding dryFor 4 different depth positions pair of punching of testing pits before immersion
Quality after answering original soil sample to dry indoors, it is described test pits 1 cross section for circle；
Step 2: lay high density survey line: by test pits 1 the center of circle centered on, lay and both pass through on test site ground 9
It tests pits the first high density survey line 2 and the second high density survey line 3 in 1 center of circle, and the first high density survey line 2 and the second high density survey line
3 perpendicular layings, the first high density survey line 2 and the second high density survey line 3 include high density measurement cable 7 and multiple connect
The monitoring electrode 8 of the soil body is connect on high density measurement cable 7 and is inserted perpendicularly into, multiple monitoring electrodes 8 are equidistantly laid in column,
High density measures cable 7 and connect with high-density resistivity measurement host 6, as depicted in figs. 1 and 2；
Step 3: obtain soak before resistivity data and obtain the resistivity profile figure of corresponding section: by for high density
The multiple monitoring electrodes 8 connected on measurement cable 7, which are powered, to pressurize, and is visited using high-density electric to test site ground 9
It surveys, obtains resistivity data Ω before the immersion tested pits inside and outside 1 on soil layer different depth in test site ground 91, by the examination of acquisition
Test resistivity data Ω before the immersion tested pits inside and outside 1 on soil layer different depth in place ground 91It is transmitted to high-density resistivity survey
Host 6 is measured, before high-density resistivity measures host 6 to the immersion tested pits inside and outside 1 on soil layer different depth in test site ground 9
Resistivity data Ω1Analysis inversion procedure is carried out, soil layer leaching inside and outside 1 of testing pits in a secondary reflection test site ground 9 can be drawn out
The resistivity profile figure of section is corresponded to before water on different depth, as shown in Figure 3；
In the present embodiment, the monitoring electrode 8 is red copper electrode, and export license is small, reusable, and utilization rate is high.
It should be noted that punch sampling in 1 by testing pits before immersion, different depth in 1 of testing pits before soaking is obtained
Soil layer moisture content obtains resistivity data before the immersion tested pits inside and outside 1 on soil layer different depth using high-density electric, to obtain
The association corresponding relationship that the aqueous rate score of soil layer corresponds to resistivity value provides basic data reference.
Step 4: resistivity data and obtaining the resistivity profile of corresponding section during obtaining immersion and after immersion
Figure: the first high density survey line 2 described in step 2 and the second high density survey line 3 are without recycling during immersion, according to engineering
Demand can continuously monitor after immersion of testing pits, continuously measure soil layer different time points inside and outside 1 of testing pits in test site ground 9
Resistivity data Ω during the immersion of different depthi, when the soil layer difference inside and outside 1 that will test pits in the test site ground 9 of acquisition
Between put different depth immersion during resistivity data ΩiIt is transmitted to high-density resistivity measurement host 6, high-density resistivity
Measurement host 6 is to resistivity number during the immersion of soil layer different time points different depth of testing pits inside and outside 1 in test site ground 9
According to ΩiAnalysis inversion procedure is carried out, can draw out and be tested pits inside and outside 1 in more secondary reflection test site ground 9 during soil layer immersion
The resistivity profile figure of the correspondence section of different time points different depth, as shown in Figure 4.
After immersion, test site ground 9 is detected using high-density electric, is obtained in test site ground 9
Resistivity data Ω after the immersion tested pits inside and outside 1 on soil layer different depthm, will test pits 1 in the test site ground 9 of acquisition
Resistivity data Ω after immersion on inside and outside soil layer different depthmIt is transmitted to high-density resistivity measurement host 6, high density
Resistivity measurement host 6 to the immersion tested pits inside and outside 1 on soil layer different depth in test site ground 9 after resistivity data
ΩmAnalysis inversion procedure is carried out, can draw out and test pits inside and outside 1 in a secondary reflection test site ground 9 after soil layer immersion not
With the resistivity profile figure for corresponding to section in depth, as shown in Figure 5.
It should be noted that by obtain during immersion and immersion after resistivity data and obtain corresponding section
Resistivity profile figure can intuitively, completely obtain immersion process soil layer moisture content dynamic changing process, obtain soil layer in different immersions
Time point soaks range, can also calculate diffusion velocity of the water in unsaturated soil, reliable and stable, using effect is good.
In actual use, density survey line only needs disposably to arrange, detecting parameter is set in advance, only needs during test
Technician triggers instrument start key in different time points according to test requirements document and can detect, it can be achieved that submerging test process
The real-time, continuous of soil layer water-cut variation, fixed point monitoring reduce the labor intensity of water cut test work, improve working efficiency.
Step 5: interior punching sampling of testing pits after immersion: after immersion terminates, soil body Collapsing Deformation is stablized, at 1 bottom of testing pits
Portion and it is located at before immersion 4 sides of punching of testing pits and is punched, punching 5 of testing pits after soak is punched to testing pits after immersion 5 to take
Sample interval n is sampled work, according to formulaCalculate the soil layer of different depth in punching 5 of testing pits after soaking
Moisture content wm, wherein mAfterwardsFor the quality of the original soil sample for 5 different depth positions of punching of testing pits after immersion, mAfter doTo test pits after immersion
It punches 5 different depth positions and corresponds to the quality after original soil sample is dried indoors；
It should be noted that being tested pits after obtaining immersion interior by punching sampling in testing pits after immersion again
The soil layer moisture content of different depth obtains resistance after the immersion tested pits on inside and outside soil layer different depth using high-density electric
It is one corresponding to obtain the aqueous rate score of a soil layer in conjunction with middle soil layer moisture content and the resistivity data of testing pits before immersion for rate data
The association corresponding relationship of resistivity value, the inside and outside soil layer different location of testing pits measured by different time points high-density electric
Soil layer resistivity value obtains the aqueous rate score of soil layer of corresponding soil layer position, it is not necessary to full test site punching sampling or installation soil
Earth moisture meter is approximately lossless detection, easy to implement, measuring speed is fast, reproducible, precision is high, can be effectively controlled and is constructed into
This.
Step 6: data comparison determines that soil layer soaks the diffusion rate of range, water in unsaturated soil and soil layer difference position
The aqueous rate score of the soil layer set: according to resistivity number before the immersion tested pits on 1 different depth in test site ground 9 in step 3
According to Ω1Electricity during immersion with different time points different depth during 1 immersion of testing pits in test site ground 9 in step 4
Resistance rate data ΩiComparison, and the resistivity by corresponding to section on different depth before 1 immersion of testing pits in test site ground 9 is cutd open
It tests pits in face figure and test site ground 9 and corresponds to the resistivity profile figure comparison of section after 1 immersion on different depth, obtain
The soil layer inside and outside 1 vertically and horizontally of testing pits after immersion soaks range；
According to resistivity data Ω before the immersion tested pits on 1 different depth in test site ground 9 in step 31And step
It tests pits in test site ground 9 during 1 immersion in four resistivity data Ω during the immersion of different time points different depthi
Comparison, acquisition are tested pits inside and outside 1 vertically and horizontally upper diffusion rate of the water in unsaturated soil；
According to the soil layer moisture content w of different depth in punching 4 of testing pits before soaking in step 11With in step 5 soak after try
The soil layer moisture content w of different depth in hole punching 5mComparison can be obtained accurately testing pits and soak range on vertical direction in 1, together
When will in step 1 soak before test pits punching 4 in different depth soil layer moisture content w1With in step 3 in test site ground 9
Resistivity data Ω before the immersion tested pits on 1 different depth1It is corresponded, is tested pits in punching 5 after soaking in step 5
The soil layer moisture content w of different depthmWith electricity after the immersion tested pits on 1 different depth in test site ground 9 in step 4
Resistance rate data ΩmIt is corresponded and is verified, obtain the association of the corresponding resistivity value of the aqueous rate score of a soil layer
Corresponding relationship passes through the soil layer resistivity value for the soil layer different location inside and outside 1 of testing pits that different time points high-density electric measures
The aqueous rate score of soil layer of corresponding soil layer position is obtained, as shown in Figure 6 and Figure 7.
In the present embodiment, carried out in such a way that Luoyang Spade is by Manual punching in 1 bottom of testing pits before soaking in step 1
Punching, punching 4 of testing pits before being soaked test pits before immersion and punch n satisfaction in sampling interval in 4: 0.1m≤n≤0.5m；Step 5
It is middle immersion terminate, soil body Collapsing Deformation stablize after, in such a way that Luoyang Spade is by Manual punching test pits 1 bottom and be located at leaching
4 sides of punching of testing pits before water are punched, punching 5 of testing pits after being soaked.
It should be noted that due to only needing drilling operation twice during entirely testing, accordingly, it is preferred that using Lip river is used
Sun shovel is punched by way of Manual punching in 1 bottom of testing pits, and reduces the use of extensive drilling equipment, reduce experiment at
This, sampling interval n meets in punching 4 of testing pits before immersion: 0.1m≤n≤0.5m, sampling interval n value is smaller, soil layer moisture content
Calculated result is more accurate, while computational complexity also improves, and can choose suitable sampling interval n according to practical immersion result,
Computation complexity is reduced while meeting precision.
In the present embodiment, punched by the way of drilling machine automatic punching in 1 bottom of testing pits before soaking in step 1,
It tests pits before being soaked punching 4, sampling interval n meets in punching 4 of testing pits before immersion: n=0.5m or n=1.0m；In step 5
After immersion terminates, soil body Collapsing Deformation is stablized, in 1 bottom and the examination before immersion of testing pits by the way of drilling machine automatic punching
Hole 4 sides of punching are punched, punching 5 of testing pits after being soaked.
The present invention obtains the soil for interior different depth of testing pits before soaking in use, by punching sampling in testing pits before immersion
Layer moisture content obtains resistivity data before the immersion tested pits on inside and outside soil layer different depth using high-density electric, by soaking
Sampling is punched in testing pits after water again, obtains the soil layer moisture content for interior different depth of testing pits after soaking, utilization is highly dense
Degree electrical method obtains resistivity data after the immersion tested pits on inside and outside soil layer different depth, obtains the aqueous rate score of soil layer
The association corresponding relationship of a corresponding resistivity value tests pits inside and outside soil layer not by what different time points high-density electric measured
Soil layer resistivity value with position obtains the aqueous rate score of soil layer of corresponding soil layer position, it is not necessary to full test site punching sampling
Or installation soil moisture meter, it is approximately lossless detection, avoids place from a large amount of punching hole occur, original foundation structure is caused
It destroys, reduces some potential safety problems.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way, it is all according to the present invention
Technical spirit any simple modification to the above embodiments, change and equivalent structural changes, still fall within skill of the present invention
In the protection scope of art scheme.
Claims (3)
1. one kind is tested pits, soil layer soaks lossless continuous probe method in submerging test, which is characterized in that this method includes following step
It is rapid:
Step 1: interior punching sampling of testing pits before immersion: being punched before immersion in (1) bottom of testing pits, test pits and beat before being soaked
Hole (4), to testing pits before immersion, punching (4) is sampled work, and punching (4) interior sampling interval of testing pits before immersion is n, the unit of n
For m, according to formulaCalculate the soil layer moisture content w of punching (4) interior different depth of testing pits before soaking1, wherein
mBeforeFor the quality of the original soil sample of punching (4) different depth position of testing pits before immersion, mIt is preceding dryFor punching (4) difference of testing pits before immersion
Depth location corresponds to the quality after original soil sample is dried indoors, and the cross section for testing pits (1) is circle；
Step 2: lay high density survey line: by test pits (1) the center of circle centered on, lay and both pass through on test site ground (9)
It tests pits the first high density survey line (2) and the second high density survey line (3) in (1) center of circle, and the first high density survey line (2) and second high
Density survey line (3) perpendicular laying, the first high density survey line (2) and the second high density survey line (3) include high density measurement electricity
Cable (7) and multiple monitoring electrodes (8) being both connected in high density measurement cable (7) and be inserted perpendicularly into the soil body, Duo Gejian
It surveys electrode (8) equidistantly to lay in column, high density measures cable (7) and connect with high-density resistivity measurement host (6)；
It soaks preceding resistivity data Step 3: obtaining and obtains the resistivity profile figure of corresponding section: by being measured for high density
The multiple monitoring electrodes (8) connected on cable (7), which are powered, to be pressurizeed, and is carried out using high-density electric to test site ground (9)
Detection obtains resistivity data Ω before the immersion tested pits inside and outside (1) on soil layer different depth in test site ground (9)1, will obtain
Test site ground (9) in resistivity data Ω before the immersion tested pits inside and outside (1) on soil layer different depth1It is transmitted to highly dense
It spends resistivity measurement host (6), high-density resistivity measures host (6) to soil layer inside and outside (1) of testing pits in test site ground (9)
Resistivity data Ω before immersion on different depth1Analysis inversion procedure is carried out, a secondary reflection test site ground can be drawn out
(9) it tests pits in and corresponds to the resistivity profile figure of section before soil layer soaks inside and outside (1) on different depth；
Step 4: resistivity data and obtaining the resistivity profile figure of corresponding section during obtaining immersion and after immersion:
The first high density survey line (2) described in step 2 and the second high density survey line (3) are without recycling during immersion, according to engineering
Demand can continuously monitor after immersion of testing pits, and continuously measure when testing pits soil layer difference inside and outside (1) in test site ground (9)
Between put different depth immersion during resistivity data Ωi, will test pits in the test site ground (9) of acquisition soil inside and outside (1)
Resistivity data Ω during the immersion of layer different time points different depthiIt is transmitted to high-density resistivity measurement host (6), it is high
Density resistance rate measures the leaching of host (6) to the soil layer different time points different depth inside and outside (1) of testing pits in test site ground (9)
Resistivity data Ω during wateriAnalysis inversion procedure is carried out, can draw out in more secondary reflections test site ground (9) and test pits
(1) the resistivity profile figure of the correspondence section of different time points different depth during soil layer soaks inside and outside；
After immersion, test site ground (9) are detected using high-density electric, are obtained in test site ground (9)
Resistivity data Ω after the immersion tested pits inside and outside (1) on soil layer different depthm, will be in the test site ground (9) of acquisition
Resistivity data Ω after the immersion tested pits inside and outside (1) on soil layer different depthmIt is transmitted to high-density resistivity measurement host
(6), immersion of high-density resistivity measurement host (6) to testing pits in test site ground (9) inside and outside (1) on soil layer different depth
After resistivity data ΩmAnalysis inversion procedure is carried out, can draw out in secondary reflection test site ground (9) and test pits (1)
The resistivity profile figure of section is corresponded to after inside and outside soil layer immersion on different depth；
Step 5: interior punching sampling of testing pits after immersion: after immersion terminates, soil body Collapsing Deformation is stablized, in (1) bottom of testing pits
And punching (4) side of testing pits before immersion is punched, and is tested pits after being soaked punching (5), to test pits after immersion punching (5)
It is sampled work with sampling interval n, according to formulaCalculate punching (5) interior different depth of testing pits after soaking
Soil layer moisture content wm, wherein mAfterwardsFor the quality of the original soil sample of punching (5) different depth position of testing pits after immersion, mAfter doFor leaching
Punching (5) different depth position of testing pits after water corresponds to the quality after original soil sample is dried indoors；
Step 6: data comparison determines that soil layer soaks the diffusion rate and soil layer different location of range, water in unsaturated soil
The aqueous rate score of soil layer: according to resistivity number before the immersion tested pits on (1) different depth in test site ground (9) in step 3
According to Ω1With the immersion process of different time points different depth during (1) immersion of testing pits in test site ground (9) in step 4
Middle resistivity data ΩiComparison, and by corresponding to section on different depth before (1) immersion of testing pits in test site ground (9)
The resistivity that section is corresponded on different depth after resistivity profile figure and test site ground (9) interior (1) immersion of testing pits is cutd open
The comparison of face figure, (1) inside and outside soil layer vertically and horizontally of testing pits after being soaked soak range；
According to resistivity data Ω before the immersion tested pits on (1) different depth in test site ground (9) in step 31And step
It tests pits in test site ground (9) during (1) immersion in four resistivity number during the immersion of different time points different depth
According to ΩiComparison, (1) the inside and outside vertically and horizontally upper diffusion rate of water in unsaturated soil of being tested pits；
According to the soil layer moisture content w of punching (4) interior different depth of testing pits before soaking in step 11With in step 5 soak after test pits
Punch the soil layer moisture content w of (5) interior different depthmComparison, can accurately be tested pits and soak range on (1) interior vertical direction,
While the soil layer moisture content w of punching (4) interior different depth of testing pits before soaking in step 11With test site ground in step 3
(9) resistivity data Ω before the immersion tested pits on (1) different depth in1It is corresponded, is tested pits after soaking in step 5
Punch the soil layer moisture content w of (5) interior different depthmWith test site ground (9) in step 4 in test pits on (1) different depth
Resistivity data Ω after immersionmIt is corresponded and is verified, obtain the corresponding resistance of the aqueous rate score of a soil layer
The association corresponding relationship of rate score, the soil layer different location inside and outside (1) of testing pits measured by different time points high-density electric
Soil layer resistivity value obtains the aqueous rate score of soil layer of corresponding soil layer position.
2. one kind described in accordance with the claim 1 is tested pits, soil layer soaks lossless continuous probe method in submerging test, and feature exists
In: it is punched in such a way that Luoyang Spade is by Manual punching in (1) bottom of testing pits before soaking in step 1, before obtaining immersion
It tests pits punching (4), the interior sampling interval n of punching (4) of testing pits before immersion meets: 0.1m≤n≤0.5m；
After immersion terminates in step 5, soil body Collapsing Deformation is stablized, in test pits (1) in such a way that Luoyang Spade is by Manual punching
Bottom and punching (4) side of testing pits is punched before being located at immersion, tests pits punching (5) after being soaked.
3. one kind described in accordance with the claim 1 is tested pits, soil layer soaks lossless continuous probe method in submerging test, and feature exists
In: it is punched by the way of drilling machine automatic punching in (1) bottom of testing pits before soaking in step 1, is tested pits before being soaked
It punches (4), the interior sampling interval n of punching (4) of testing pits before immersion meets: n=0.5m or n=1.0m；
After immersion terminates in step 5, soil body Collapsing Deformation is stablized, in (1) bottom of testing pits by the way of drilling machine automatic punching
And punching (4) side of testing pits before immersion is punched, and is tested pits after being soaked punching (5).
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