CN106295040A - Landslide disaster monitoring and warning earth's surface inclinometer threshold determination method - Google Patents
Landslide disaster monitoring and warning earth's surface inclinometer threshold determination method Download PDFInfo
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- CN106295040A CN106295040A CN201610680824.7A CN201610680824A CN106295040A CN 106295040 A CN106295040 A CN 106295040A CN 201610680824 A CN201610680824 A CN 201610680824A CN 106295040 A CN106295040 A CN 106295040A
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Abstract
The invention discloses landslide disaster monitoring earth's surface inclinometer threshold determination method, it relates to a kind of method of rainfall induced landslide marginal value early warning.With Monitoring Data during a large amount of Slope Failure, test in situ and based on model experiment example, theoretical in conjunction with Rock And Soil creep (rheology), set up landslide creeping deformation process model, resolve the relation between rainfall slide creep (rheology) three stage and angle of inclination, earth's surface, slope, obtain earth's surface, rainfall landslide inclinometer three stage early warning threshold reference, and the come down method of long-range monitoring and warning system and numerical simulation of the field set up by project team tested, provide four stage Set criteria and early warning requirement, scientific basis is provided for Geological Hazards Monitoring comprehensive pre-warning technology decision-making.
Description
Technical field
The method that the present invention relates to a kind of rainfall induced landslide earth's surface inclinometer marginal value, is specifically related to a kind of landslide
Disaster monitoring early warning earth's surface inclinometer threshold determination method.
Background technology
After Wenchuan earthquake, incompact-deposit bodies induces number callapsed landslide body in terms of necessarily under the effect of rainfall, gives
Post-disaster reconstruction and the people life property safety of earthquake-stricken area bring grave danger.Currently can't take out enough warps in country
Take to everywhere, earthquake-stricken area landslide carry out engineering control on the premise of, therefore carry out monitoring and warning become minimizing casualties and
The important measures of property loss.Landslide Monitoring Methods in early days mainly carries out grand with manual patrol, steel ruler, measurement well etc.
Seeing the observation of phenomenon, observation, precision is low, poor stability；Along with electronic technology, computer technology, the development of measurement technology, greatly
Promoted research and development and the application of Novel monitor instruments and meters, landslide monitoring method also by qualitative observation to quantitative precision instrument
The evolution of observation.At present, landslide monitoring still relies on above two method: one, simple observation method, it has the letter of acquisition
Breath is directly perceived, simple economy, and practicality is relatively strong, the advantages such as effect is preferable；But have that observation content is single, precision is low and work is strong
The shortcomings such as degree is big.Two, precision equipment monitoring method, though it is high to have precision, simple to operate, intuitive is strong, the advantages such as labor intensity is low；
But also by instrument and equipment costly, install and safeguard that complicated and early warning marginal value is difficult to determine etc. factors perplexs.On the spot
For table equipment, specifically including that 1.. greatly precision measurement (total powerstation, level gauge, theodolite), it can observe slip mass
Absolute displacement amount, certainty of measurement and efficiency are the highest, it is adaptable to the landslide displacement monitoring in different distortion stage；But at orographic condition
In the case of (sighting condition) and meteorological condition are restricted, measuring workload big, the cycle is long, and automaticity is low.2. .GPS prison
Survey method, simple to operation, have round-the-clock, in high precision, the advantage such as full-automatic；But certainty of measurement is low, it is not suitable for landslide and becomes
The shape initial stage monitors, and in alpine region, satellite-signal is easily blocked, and when multipath effect is more serious, measurement result is had one
Fixing sound, additionally, GPS is expensive, popularization and application difficulty is big.3. .BOTDR monitoring method, certainty of measurement is high, the suitability
By force, real-time stability is good；But expensive, field operation is poor, maintenance difficulties is big, and easily pulls apart, it is difficult to for landslide monitoring
Middle and late stage.4. the eyes with non-contact method such as .INSAR, obtains quantity big, and precision is high, obtains data fast；But data difficult treatment, by vegetation,
The environmental impact factor such as soil, water content is big, and data are difficult to process, and the suitability is poor.5.. joint measurement method, put into fast, precision
Height, method Simple visual, data is reliable；But there is instrument installation difficulty, and be not suitable for Landslide Deformation middle and late stage.6.. earth's surface
Inclinometer, the absolute precision of its observation is high, Monitoring Data is reliable, easily protect, easy for installation, low price, automaticity high,
It is applicable to each stage of Landslide Deformation.
In sum, current various landslide earth's surface monitoring method and instrument thereof have different use conditions and limitation,
Especially with and the problem such as maintenance cost and monitoring accuracy, under field condition monitoring instrument with communicate, the guarantor of service cable
The problem such as protect also limit the popularization and application of long-range monitoring and warning technology.But, earth's surface inclinometer is as a kind of new-type landslide
Earth's surface monitoring device, it is to avoid problem above, and use easy to spread.Present patent application team applies in June, 2012
Utility model patent (patent No.: ZL 2,012 2 0266093.9) (shown in Fig. 2), and in more than ten (mud-rock flow thing sources, landslide, place
District) Geological Hazards Monitoring point promoted and applied.But in all kinds of monitoring and warning systems having built up and setting up,
The early warning marginal value (threshold value) that all there is the earth's surface inclinometer in a serious delayed problem, i.e. " real-time early warning mode " is sentenced
Not.In this system, real-time early warning marginal value judges is the key core problem realizing reliability early warning.But up to the present, no matter
Existing Space early-warning system, or time early warning system the most well solves this problem.Therefore these early warning systems are made
The reliability of system, accuracy the most all can be greatly affected.Early warning marginal value is early have been accepted as worldwide
Subject and technical barrier, the domestic and international researcher of determination of earth's surface inclinometer marginal value rarely has and sets foot in.Due to slip mass deformation failure
Complicated mechanism, triggering factors is a lot.Therefore, by all kinds landslide monitoring example feedback data and indoor and outdoor model experiment phase
In conjunction with method determine that the marginal value of landslide earth's surface inclinometer is the scheme being easier break-through skill difficult point.
Summary of the invention
For blank present on prior art, the present invention seeks to be to provide a kind of landslide disaster monitoring and warning earth's surface
Inclinometer threshold determination method, based on Monitoring Data, in situ experiment and the model experiment example when a large amount of Slope Failure, pin
To different Landslides, set up and destroy geological model, theoretical in conjunction with creep (rheology), resolve rainfall slide creep (rheology) three rank
Relation between section and angle of inclination, earth's surface, slope, it is thus achieved that rainfall landslide early warning threshold reference.Obtain earth's surface, rainfall landslide to survey
Tiltedly instrument (0.01 °/hour, 0.1 °/hour, 1.0 °/hour) three stages early warning threshold reference, and set up by project team
The method of the field long-range monitoring and warning system in landslide and numerical simulation is tested, and provides four stage Set criteria and early warning is wanted
Ask.
To achieve these goals, the present invention is to realize by the following technical solutions: a kind of landslide disaster monitoring is pre-
Warning earth's surface inclinometer threshold determination method, it comprises the following steps:
Having reconnoitred and geologic information statistical analysis: mainly include displacement data when landslide is destroyed, Landslide Deformation is broken
The aspect data such as bad front and back position form, destruction accumulation scope, slump process and Rock And Soil physical and mechanical parameter；
2. set up landslide and destroy three-stage process model: based on typical case's rainfall landslide field monitoring data and indoor and outdoor model
Experimental technique, theoretical in conjunction with Rock And Soil creep (rheology), set up the relation between landslide earth's surface tilt angle varied and surface displacement
Model, analyzes each stage deformation characteristics, sets up three stage landslides and destroys geological model.
3. the determination of inclinometer early warning marginal value: for the deficiency of field monitoring data, must utilize indoor and outdoor model test
Method, different types of Landslide Deformation failure mechanism is simulated experimental study, and during a large amount of Slope Failure, earth's surface tilts
Angular deforming velocity tentatively provides the earth's surface inclinometer threshold limit value on landslide, and is entered by field monitoring feedback data and numerical simulation
Performing check；
4. rate of deformation four grade classification and early warning require: integrated use engineering geology, soil mechanics theories and methods pair
Rainfall Landslide Deformation destructive process and mechanism are comprehensively analyzed；Example and indoor and outdoor model scene prison is destroyed in conjunction with a large amount of monitorings
Survey data, set up rate of deformation grade scale and early warning requirement.
Described step (3), step (4) include procedure below: utilize secondary rapid damage type landslide, long-term creep type sliding
Slope, reservoir landslide and excavation cause skew prired to monitor example, in conjunction with indoor and outdoor model experiment data, it is thus achieved that abundant cunning
Slope deformation is until the complete procedure destroyed, thus furthers investigate landslide inclination angle, earth's surface and Rock And Soil stress-strain state, landslide
Development of deformation, strain localization's formation and the relation with Slope Failure process thereof；By each deformation stage Landslide Deformation state, give
Go out inclination angle, earth's surface rate of deformation early warning marginal value；Initial deformation stage 0.01 °/hour, constant speed deformation stage 0.1 °/hour,
Accelerate deformation stage 1.0 °/hour；Checked by the method for field monitoring data and numerical simulation again, set up rate of deformation
Grade scale and early warning requirement, such as table 1.
Table 1 comes down angular distortion speed advanced warning grade
The present invention had both related to the multiple Subject Problems such as genesis mechanism and triggering factors that comes down, also with landslide simulation experimental side
Method is relevant with monitoring technology equipment.By monitoring Monitoring Data and the model experiment data of Landslide Deformation with earth's surface inclinometer, give
Go out early warning marginal value when inclinometer monitoring landslide, earth's surface is destroyed, compensate for the inclination angle to the monitoring of earth's surface, landslide steady with landslide
The deficiency of relation understanding between qualitative, forms the basic subject by earth's surface inclinometer monitoring landslide disaster study of warning theoretical, for
Geological Hazards Monitoring comprehensive pre-warning technology decision-making provides scientific basis.
Accompanying drawing explanation
The present invention is described in detail below in conjunction with the accompanying drawings with detailed description of the invention；
Fig. 1 is the method flow diagram of the present invention；
Fig. 2 is Rock And Soil creep (rheology) the three-stage process model of embodiment；
Fig. 3 is that geology illustraton of model is destroyed on three stage landslides of embodiment；
Fig. 4 is the typical reservoir stability rainfall damage model experiment inclinometer data variation figure of embodiment；
Fig. 5 is the typical Clay Landslide damage model experiment inclinometer data variation figure of embodiment；
Fig. 6 is the typical heap lamination landslide experiment inclinometer data variation figure in situ of embodiment；
Fig. 7 is the typical highway slope monitoring inclinometer data variation figure of embodiment；
Fig. 8 is the typical reservoir landslide field monitoring inclinometer data variation figure of embodiment；
Fig. 9 is the typical excavated slope monitoring inclinometer data variation figure of embodiment；
Figure 10 is the typical landslide monitoring inclinometer data variation figure of embodiment；
Figure 11 is the earth's surface inclinometer early warning marginal value process decision chart of embodiment.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and be easy to understand with effect, below in conjunction with
Detailed description of the invention, is expanded on further the present invention.
The method flow diagram of this detailed description of the invention as it is shown in figure 1, detailed description of the invention by the following technical solutions: ground
The three-stage process of displacement one time (rate of deformation) curve in body creep (rheology) theory is considered to be Prediction and Forecast of Landslide
Basic standard.In the 1. creep stage, also known as deceleration creep stage (AB section), Rock And Soil deforms to slow down development, creep curve
Slope is gradually reduced.2. creep stage (BC), also known as the steady-state deformation stage.Constant speed development, creep are shown greatly in Rock And Soil deformation
Curve approximation one angled straight lines, strain rate is the most constant.In 3. creep stage (CE), it is also called the tertiary creep stage, ground
Body deformability speed increases sharply by C point, arrives E point, and Rock And Soil destroys.Wherein, in CD section, deformation increases rapidly, but rock
The soil body not yet destroys, DE section, and Rock And Soil rate of deformation increases severely, and Rock And Soil quickly destroys, such as Fig. 2.
Secondary rapid damage type landslide, long-term creep type landslide, reservoir landslide and excavation is utilized to cause skew prired
Deng monitoring example, and combine indoor and outdoor model experiment data, it is possible to obtain abundant Landslide Deformation until the complete procedure destroyed,
Thus further investigate landslide inclination angle, earth's surface and Rock And Soil stress-strain state, Landslide Deformation development, strain localization formed and
Its relation with Slope Failure process；By each deformation stage Landslide Deformation state, provide the rate of deformation early warning of inclination angle, earth's surface
Marginal value (initial deformation stage 0.01 °/hour, constant speed deformation stage 0.1 °/hour accelerate deformation stage 1.0 °/hour)；Again
Checked by the method for field monitoring data and numerical simulation, set up rate of deformation grade scale and early warning requirement.
The experimental provision that this detailed description of the invention uses mainly includes three parts:
Model experiment, in situ experiment and field monitoring data are carried out finishing analysis, such as Fig. 3～Figure 10；Fig. 3 is embodiment
Three the stages landslide destroy geology illustratons of model；Fig. 4 is the typical reservoir stability rainfall damage model experiment inclinometer of embodiment
Data variation figure；Fig. 5 is the typical Clay Landslide damage model experiment inclinometer data variation figure of embodiment；Fig. 6 is embodiment
Typical heap lamination landslide in situ experiment inclinometer data variation figure；Fig. 7 is the typical highway slope monitoring inclinometer of embodiment
Data variation figure；Fig. 8 is the typical reservoir landslide field monitoring inclinometer data variation figure of embodiment；Fig. 9 is the allusion quotation of embodiment
Type excavated slope monitoring inclinometer data variation figure；Figure 10 is the typical landslide monitoring inclinometer data variation figure of embodiment.
Earth's surface deviational survey when being destroyed on landslide carries out three stage destructive processs and deformation duration carries out statistical analysis, knot
Close field monitoring landslide measured data, set up landslide angle of inclination rate of deformation and the relation between the time, such as the early warning of Figure 11
Marginal value process decision chart；The preliminary critical inclination angle value threshold setting up landslide, is shown in Table 2.
Table 2 earth's surface inclinometer angle variable rate and the relation of time
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.The technology of the industry
Personnel, it should be appreciated that the present invention is not restricted to the described embodiments, simply illustrating this described in above-described embodiment and description
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, and these become
Change and improvement both falls within scope of the claimed invention.Claimed scope by appending claims and
Equivalent defines.
Claims (2)
1. landslide disaster monitoring and warning earth's surface inclinometer threshold determination method, it is characterised in that it comprises the following steps:
(1) having reconnoitred and geologic information statistical analysis: include displacement data when landslide is destroyed, Landslide Deformation destroys anteroposterior position
Put form, destroy accumulation scope, slump process and Rock And Soil physical and mechanical parameter data；
(2) set up landslide and destroy three-stage process model: be real based on typical case's rainfall landslide field monitoring data and indoor and outdoor model
Proved recipe method, in conjunction with Rock And Soil creep, rheological theory, sets up the relation mould between landslide earth's surface tilt angle varied and surface displacement
Type, analyzes each stage deformation characteristics, sets up three stage landslides and destroys geological model；
(3) determination of inclinometer early warning marginal value: for the deficiency of field monitoring data, utilize the side of indoor and outdoor model test
Method, is simulated experimental study, and during a large amount of Slope Failure, inclination angle, earth's surface becomes different types of Landslide Deformation failure mechanism
Shape speed tentatively provides the earth's surface inclinometer threshold limit value on landslide, and is examined by field monitoring feedback data and numerical simulation
Test；
(4) rate of deformation four grade classification and early warning require: comprehensively analyze rainfall Landslide Deformation destructive process and mechanism；
Destroy example and indoor and outdoor model field monitoring data in conjunction with a large amount of monitorings, set up rate of deformation grade scale and early warning requirement.
Landslide disaster monitoring and warning earth's surface the most according to claim 1 inclinometer threshold determination method, it is characterised in that institute
Step (3), the step (4) stated include procedure below: utilize secondary rapid damage type landslide, long-term creep type landslide, reservoir to slide
Slope and excavation cause skew prired to monitor example, in conjunction with indoor and outdoor model experiment data, it is thus achieved that abundant Landslide Deformation is straight
To the complete procedure destroyed, thus further investigate landslide inclination angle, earth's surface and Rock And Soil stress-strain state, Landslide Deformation development,
Strain localization's formation and the relation with Slope Failure process thereof；By each deformation stage Landslide Deformation state, provide earth's surface and incline
Oblique angle rate of deformation early warning marginal value；Initial deformation stage 0.01 °/hour, constant speed deformation stage 0.1 °/hour, accelerates deformation
Stage 1.0 °/hour；Checked by the method for field monitoring data and numerical simulation again, set up rate of deformation grade scale
And early warning requirement.
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Cited By (6)
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| CN108008115A (en) * | 2017-12-01 | 2018-05-08 | 白钰 | Cave dwelling landslide disaster early warning deliverance apparatus and method under collapsible loess geological conditions |
| CN110346537A (en) * | 2019-07-11 | 2019-10-18 | 中国科学院、水利部成都山地灾害与环境研究所 | The method of potential rock landslip is determined based on grand liter of plot of construction and landforms bossy body |
| CN111473779A (en) * | 2020-03-17 | 2020-07-31 | 北京工业大学 | Method for identifying and monitoring deformation of landslide-tunnel system in linkage manner |
| WO2021083008A1 (en) * | 2019-10-29 | 2021-05-06 | 清华大学 | Flexible landslide monitoring device and method thereof |
| CN114333257A (en) * | 2021-12-30 | 2022-04-12 | 中国科学院、水利部成都山地灾害与环境研究所 | Landslide deformation rate critical value determination and landslide early warning method |
| CN115376284A (en) * | 2022-08-23 | 2022-11-22 | 辽宁工程技术大学 | Landslide identification and landslide early warning method based on surface and deep displacement monitoring |
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| CN111473779A (en) * | 2020-03-17 | 2020-07-31 | 北京工业大学 | Method for identifying and monitoring deformation of landslide-tunnel system in linkage manner |
| CN114333257A (en) * | 2021-12-30 | 2022-04-12 | 中国科学院、水利部成都山地灾害与环境研究所 | Landslide deformation rate critical value determination and landslide early warning method |
| CN115376284A (en) * | 2022-08-23 | 2022-11-22 | 辽宁工程技术大学 | Landslide identification and landslide early warning method based on surface and deep displacement monitoring |
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