CN108914908A - A kind of Salty Soil Subgrade deterioration monitoring method - Google Patents
A kind of Salty Soil Subgrade deterioration monitoring method Download PDFInfo
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- CN108914908A CN108914908A CN201811079999.8A CN201811079999A CN108914908A CN 108914908 A CN108914908 A CN 108914908A CN 201811079999 A CN201811079999 A CN 201811079999A CN 108914908 A CN108914908 A CN 108914908A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
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- Chemical & Material Sciences (AREA)
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- General Engineering & Computer Science (AREA)
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- Testing Or Calibration Of Command Recording Devices (AREA)
- Road Paving Structures (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a kind of Salty Soil Subgrades to deteriorate monitoring method, the characteristics of according to filled-up ground salinized soil disease, for roadbed caused by water salt corrosion roadbed, salinization and the deterioration of the roadbed physics characteristic as caused by water salt corrosion roadbed are monitored again, sensor is laid in different depth according to salinized soil filled-up ground design feature, it lays moisture salt sub-sensor monitoring subgrade drainage salt and migrates situation, lay earth pressure gauge, vibrating speed sensors, vibration acceleration sensor and reflect roadbed physics characteristic situation；By the monitoring to roadbed salinization situation and roadbed physical ones, the degradation of overall merit roadbed carries out alarm sounds when roadbed degradation is more than given threshold.It can reflect that roadbed service state is avoided risk to handle in time in time.
Description
Technical field
The present invention relates to monitoring technical field, specifically a kind of Salty Soil Subgrade deteriorates monitoring method.
Background technique
The ground such as northwest China portion Gansu, Xinjiang are distributed large area salinized soil, push with Silk Road economy-zone, western
Highway construction becomes particularly important economic artery, and saline soil area highway construction also becomes inevitable project.
In practical projects, due to salinized soil engineering characteristic, often there is wet (molten) sunken, frost boiling, salt in saline soil area highway
The diseases such as rise, corrode.For Salty Soil Subgrade disease, domestic and foreign scholars pass through a large amount of research practice, formd more at
Ripe salinized soil processing technique and specification change the methods of to fill out, increase roadbed, isolation strip is arranged and have effectively administered salinized soil disease
Evil.But with the growth of roadbed service life, roadbed salinized soil disease still has the phenomenon that part shows " recurrence ".Mainly because
Roadbed salinization again caused by migrating for water salt, corresponding salinized soil correlation disease comes one after another, and leads to roadbed physics
Matter changes and unstability.Therefore the filled-up ground salinized soil disease after filling out is changed, the migration of water salt is inducement, the deterioration of roadbed physical performance
Unstability is performance, therefore water salinity and roadbed physical performance should be caught to change the health monitoring of saline soil area filled-up ground
Become two key points, the long-term real-time monitoring of water salinity and physical performance is carried out to roadbed, reflects roadbed deterioration clothes in time
Labour situation, is a problem to be solved.
Summary of the invention
The purpose of the present invention is to provide a kind of Salty Soil Subgrades to deteriorate monitoring method, to solve to mention in above-mentioned background technique
Out the problem of.
To achieve the above object, the present invention provides the following technical solutions：
5. a kind of Salty Soil Subgrade deteriorates monitoring method, monitoring is completed by sensor, and the sensor uses
Layering installation；Its installation method is as follows：
(1) installation of packing course lower sensor is changed
A. the pre-buried coordinate and elevation to set up an office is determined
B. it after excavating and changing and fill out the part soil body, sets up an office and nearby the soil body carries out preliminary consolidation to buying.
C. it digs downwards in pre- embedded coordinate points to default elevation (lower 50cm), perpendicular to roadbed side at the pre-buried coordinate that sets up an office
Edge line dig can buried line protection pipe groove, depth is the same as the sensor depth of burying.
D. sensor installation and debugging are good, route and route protection pipe go out upward suitable ground out after roadbed,
E. fill compaction is carried out.
(2) underlayment and the installation of roadbed operative sensor
A. the pre-buried coordinate and elevation to set up an office is determined；
B. when roadbed part is embedded, construction layer position cope level is higher than embedded point height 20cm~45cm (because every lamination is real
25cm afterwards), when underlayment sensor is installed, construction layer position cope level is higher than embedded point height 20cm or more, pushes up lower than base
Face；
C. it is excavated at pre- embedded coordinate for burying the openning of sensor to pre- embedded elevation；
D. at the pre-buried coordinate that sets up an office perpendicular to shoulder line dig can buried line protection pipe shallow nest, depth is greater than
15cm；
E. it will banket after sensor and the embedded debugging well of route and be compacted with road roller；
F. lower layer of sensor method for embedding is same as above, and is completed until underlayment sensor is embedded
As a further solution of the present invention：The sensor includes：Warm and humid salt integrative sensor, earth pressure gauge, vibration
Velocity sensor and vibration acceleration sensor；And every class sensor is six groups.
As further scheme of the invention：Sensor is embedded in the runway interposition close to ponding side in transverse direction
It sets；Sensor distance is 1m on longitudinal direction；Vertical upper to be layered laying, top layer is laid in underlayment, and embankment roadbed part is embedded
Spacing is 50cm, changes to bury under packing course and buries a road sensor at 50cm.
As further scheme of the invention：The warm and humid salt integrative sensor, earth pressure gauge, vibrating speed sensors
And the model of vibration acceleration sensor is respectively：TM-WSY, VWE-0.4, VE101-10 and L103.
Compared with prior art, the beneficial effects of the invention are as follows：The characteristics of present invention is according to filled-up ground salinized soil disease,
For roadbed caused by water salt corrosion roadbed, salinization and the deterioration of the roadbed physics characteristic as caused by water salt corrosion roadbed are carried out again
Monitoring lays sensor in different depth according to salinized soil filled-up ground design feature, lays moisture salt sub-sensor and monitor road
Base water salt migrates situation, lays earth pressure gauge, vibrating speed sensors, vibration acceleration sensor and reflects roadbed physics characteristic
Situation；Pass through the monitoring to roadbed salinization situation and roadbed physical ones, the degradation of overall merit roadbed, when roadbed is bad
Change situation carries out alarm sounds when being more than given threshold.It can reflect that roadbed service state evades wind to handle in time in time
Danger.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that a kind of Salty Soil Subgrade deteriorates that partial vertical is cutd open in monitoring method；
Wherein：It is followed successively by from left to right：Warm and humid salt integrative sensor, earth pressure gauge, vibrating speed sensors and vibration
Acceleration transducer.
Fig. 2 is the structural schematic diagram that a kind of Salty Soil Subgrade deteriorates that local horizontal is cutd open in monitoring method；
Wherein：It is followed successively by from left to right：Warm and humid salt integrative sensor, earth pressure gauge, vibrating speed sensors and vibration
Acceleration transducer.
In figure：Surface layer 1, underlayment 3, the roadbed 4 that bankets, ground elevation 5, changes packing course 6, original bottom 7 at base 2.
Specific embodiment
Technical solution of the present invention is described in more detail With reference to embodiment.
A kind of Salty Soil Subgrade deterioration monitoring method, main body are the embedded of sensor, including sensor type selection, sensing
Device installation site and depth, sensor installation method.
The selection of sensor type is to carry out selection for the inducement of salinized soil filled-up ground disease and performance.Salinized soil
The inducement of subgrade defect is the migration of water salt, therefore we select moisture salinity temperature integrative sensor to monitor roadbed temperature, water
Divide, the variation of salinity, effectively reflects roadbed salinization intensity again；The performance of Salty Soil Subgrade disease is more, such as frost boiling, salt are risen,
The change of physical property immediately finally can be all caused to lead to destabilization of roadbed, therefore we select earth pressure gauge, vibration velocity sensing
Device, vibration acceleration sensor monitor the physical performance of roadbed, effectively reflect the stable state of roadbed.
The selection of sensor mounting location and depth is depending on road structure and effectively monitoring spacing, and runway is
The particularly important position of road, the stability of runway directly affect traffic safety, the runway close to ponding side, it is easier to quilt
The position of center line of salinization again, runway is more accurate to the monitoring of driving fluctuation, therefore horizontally sensor selection is embedded
To at ponding skidding lane center；On longitudinal direction, for the accuracy for guaranteeing monitoring, the spacing of every kind of sensor is 1m；It hangs down
Upwards, based on hierarchical monitor, and consider the monitoring spacing of effectively science, therefore in the vertical top underlayment that is laid in
Lower part, under the every 50cm of embankment roadbed lay a road sensor, change under packing course and lay a road sensor.
Sensor installation method will guarantee the accuracy of sensor installation and survive using accuracy and safety as principle
Rate guarantees the safety of subgrade compaction again.Installation method is installed according to roadbed progress, is compacted again using compacting-excavation-
Installation method successively install, excavated again after compacting it is embedded can guarantee the accurate of sensor mounting location, and have certain banket
It can guarantee the safety of sensor when being compacted again, then be compacted that subgrade strength is also effectively guaranteed.The specific method is as follows：
(1) installation of packing course lower sensor is changed
A. the pre-buried coordinate and elevation to set up an office is determined
B. it after excavating and changing and fill out the part soil body, sets up an office and nearby the soil body carries out preliminary consolidation to buying.
C. it digs downwards in pre- embedded coordinate points to default elevation (lower 50cm), perpendicular to roadbed side at the pre-buried coordinate that sets up an office
Edge line dig can buried line protection pipe groove, depth is the same as the sensor depth of burying.
D. sensor installation and debugging are good, route and route protection pipe go out upward suitable ground out after roadbed,
E. fill compaction is carried out.
(2) underlayment and the installation of roadbed operative sensor
A. the pre-buried coordinate and elevation to set up an office is determined；
B. when roadbed part is embedded, construction layer position cope level is higher than embedded point height 20cm~45cm (because every lamination is real
25cm afterwards), when underlayment sensor is installed, construction layer position cope level is higher than embedded point height 20cm or more, pushes up lower than base
Face；
C. it is excavated at pre- embedded coordinate for burying the openning of sensor to pre- embedded elevation；
D. at the pre-buried coordinate that sets up an office perpendicular to shoulder line dig can buried line protection pipe shallow nest, depth is greater than
15cm；
E. it will banket after sensor and the embedded debugging well of route and be compacted with road roller；
F. lower layer of sensor method for embedding is same as above, and is completed until underlayment sensor is embedded.
Better embodiment of the invention is explained in detail above, but the present invention is not limited to above-mentioned embodiment party
Formula within the knowledge of one of ordinary skill in the art can also be without departing from the purpose of the present invention
Various changes can be made.
Claims (4)
1. a kind of Salty Soil Subgrade deteriorates monitoring method, which is characterized in that monitoring is completed by sensor, the sensing
Device is using layering installation；Its installation method is as follows：
(1) installation of packing course lower sensor is changed
A. the pre-buried coordinate and elevation to set up an office is determined
B. it after excavating and changing and fill out the part soil body, sets up an office and nearby the soil body carries out preliminary consolidation to buying.
C. it digs downwards in pre- embedded coordinate points to default elevation (lower 50cm), perpendicular to shoulder line at the pre-buried coordinate that sets up an office
Dig can buried line protection pipe groove, depth is the same as the sensor depth of burying.
D. sensor installation and debugging are good, route and route protection pipe go out upward suitable ground out after roadbed,
E. fill compaction is carried out.
(2) underlayment and the installation of roadbed operative sensor
A. the pre-buried coordinate and elevation to set up an office is determined；
B. when roadbed part is embedded, construction layer position cope level is higher than embedded point height 20cm~45cm (after every lamination reality
25cm), when underlayment sensor is installed, construction layer position cope level is higher than embedded point height 20cm or more, is lower than substrate top surface；
C. it is excavated at pre- embedded coordinate for burying the openning of sensor to pre- embedded elevation；
D. at the pre-buried coordinate that sets up an office perpendicular to shoulder line dig can buried line protection pipe shallow nest, depth be greater than 15cm；
E. it will banket after sensor and the embedded debugging well of route and be compacted with road roller；
F. lower layer of sensor method for embedding is same as above, and is completed until underlayment sensor is embedded.
2. a kind of Salty Soil Subgrade according to claim 1 deteriorates monitoring method, which is characterized in that the sensor packet
It includes：Warm and humid salt integrative sensor, earth pressure gauge, vibrating speed sensors and vibration acceleration sensor；And every class sensing
Device is six groups.
3. a kind of Salty Soil Subgrade according to claim 1 deteriorates monitoring method, which is characterized in that sensor buries in transverse direction
It is located at close to the runway middle position of ponding side；Sensor distance is 1m on longitudinal direction；It is vertical upper for layering laying, top layer's cloth
It is located at underlayment, it is 50cm that spacing is buried in embankment roadbed part, changes to bury under packing course and buries a road sensor at 50cm.
4. a kind of a kind of preparation method of Salty Soil Subgrade deterioration monitoring method as described in claim 1-2 is any, feature
It is, the model point of the warm and humid salt integrative sensor, earth pressure gauge, vibrating speed sensors and vibration acceleration sensor
It is not：TM-WSY, VWE-0.4, VE101-10 and L103.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811079999.8A CN108914908A (en) | 2018-09-17 | 2018-09-17 | A kind of Salty Soil Subgrade deterioration monitoring method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811079999.8A CN108914908A (en) | 2018-09-17 | 2018-09-17 | A kind of Salty Soil Subgrade deterioration monitoring method |
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| CN108914908A true CN108914908A (en) | 2018-11-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455853A (en) * | 2019-09-26 | 2019-11-15 | 贵州大学 | A kind of salinized soil crystallization pressure and the swollen comprehensive test device of frost heave salt |
| CN110455703A (en) * | 2019-09-02 | 2019-11-15 | 中南大学 | A kind of test device and its test method of compacted soil vaporous water and lyotropic salt migration |
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| WO2009094324A3 (en) * | 2008-01-21 | 2009-10-08 | Advanced Sensor Technology, Inc. | Sensor for measuring moisture and salinity |
| CN202433013U (en) * | 2011-10-25 | 2012-09-12 | 山西省交通科学研究院 | Data acquisition system capable of observing deformation of roadbed |
| CN106501079A (en) * | 2016-10-26 | 2017-03-15 | 河北建筑工程学院 | A kind of roadbed power stress model pilot system |
| CN107024425A (en) * | 2017-04-20 | 2017-08-08 | 哈尔滨工业大学 | Cold area's roadbed freeze thawing monitoring system and its implementation |
| CN106092868B (en) * | 2016-06-24 | 2019-04-09 | 塔里木大学 | A kind of experimental provision for simulating salinized soil environment road structure layer Mechanism of Deformation And Failure |
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2018
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Patent Citations (5)
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| CN202433013U (en) * | 2011-10-25 | 2012-09-12 | 山西省交通科学研究院 | Data acquisition system capable of observing deformation of roadbed |
| CN106092868B (en) * | 2016-06-24 | 2019-04-09 | 塔里木大学 | A kind of experimental provision for simulating salinized soil environment road structure layer Mechanism of Deformation And Failure |
| CN106501079A (en) * | 2016-10-26 | 2017-03-15 | 河北建筑工程学院 | A kind of roadbed power stress model pilot system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455703A (en) * | 2019-09-02 | 2019-11-15 | 中南大学 | A kind of test device and its test method of compacted soil vaporous water and lyotropic salt migration |
| CN110455853A (en) * | 2019-09-26 | 2019-11-15 | 贵州大学 | A kind of salinized soil crystallization pressure and the swollen comprehensive test device of frost heave salt |
| CN110455853B (en) * | 2019-09-26 | 2024-03-22 | 贵州大学 | Comprehensive testing device for crystallization pressure and frost heaving salt expansion of saline soil |
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Application publication date: 20181130 |
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