CN117373209A - Interface type soil landslide monitoring and early warning method and device based on concave-convex body theory - Google Patents
Interface type soil landslide monitoring and early warning method and device based on concave-convex body theory Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 251
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Abstract
The invention provides an interface type soil landslide monitoring and early warning method and device based on an asperity theory, which belong to the technical field of geological disaster monitoring, and comprise the following steps: determining time sequence displacement data of each concave-convex body area in a landslide monitoring area based on remote sensing image data of the landslide monitoring area; the concave-convex body area is determined based on gradient information extraction of DEM data of the landslide monitoring area; determining the deformation speed of each concave-convex body region according to the time sequence displacement data of each concave-convex body region; and carrying out early warning monitoring on the landslide monitoring areas based on the deformation speed of each concave-convex body area. The whole process of the invention does not need manual intervention, is convenient to operate, can realize real-time monitoring of landslide monitoring areas, has high monitoring efficiency, and can realize accurate early warning.
Description
Technical Field
The invention relates to the technical field of geological disaster monitoring, in particular to an interface type soil landslide monitoring and early warning method and device based on an attapulgite theory.
Background
Loess plateau is one of areas with most serious three geological disasters in China, water sensitivity is the most remarkable characteristic of loess, rainwater infiltrates into loess under the action of strong rainfall to quickly increase the saturation of soil, and the change of water in soil influences the shear strength of the soil, so that loess shallow landslide is induced. The method effectively develops the deformation and cause monitoring work of the soil landslide, and has important significance for disaster prevention and reduction work.
The key point of monitoring the landslide is to know the change condition of the landslide. The traditional method for monitoring the landslide is to measure the saturation change of the soil body by using a soil saturation tester in an artificial mode so as to monitor the change condition of the landslide by detecting the saturation of the soil body and execute corresponding early warning measures. However, this approach has the disadvantage of being time consuming, labor intensive, and not amenable to real-time monitoring.
Disclosure of Invention
The invention provides an interface type soil landslide monitoring and early warning method and device based on an asperity theory, which are used for solving the defects that the traditional method for monitoring the soil landslide is time-consuming and labor-consuming and cannot be used for real-time monitoring in the prior art.
The invention provides an interface type soil landslide monitoring and early warning method based on an asperity theory, which comprises the following steps:
Determining time sequence displacement data of each concave-convex body area in a landslide monitoring area based on remote sensing image data of the landslide monitoring area; the concave-convex body area is determined based on gradient information extraction of DEM data of the landslide monitoring area;
determining the deformation speed of each concave-convex body region according to the time sequence displacement data of each concave-convex body region;
and carrying out early warning monitoring on the landslide monitoring areas based on the deformation speed of each concave-convex body area.
According to the interface type soil landslide monitoring and early warning method based on the concave-convex body theory, the remote sensing image data based on the landslide monitoring area determines time sequence displacement data of each concave-convex body area in the landslide monitoring area, and the method comprises the following steps:
performing interference processing on the remote sensing image data of the landslide monitoring area to obtain a differential interference image corresponding to the remote sensing image data;
and carrying out phase extraction and calculation on the differential interferogram corresponding to the remote sensing image data, and determining time sequence displacement data of each concave-convex body region.
According to the interface type soil landslide monitoring and early warning method based on the concave-convex body theory, the landslide monitoring area is monitored in an early warning mode based on the deformation speed of each concave-convex body area, and the method comprises the following steps:
Determining an early warning level corresponding to the deformation speed of each concave-convex body area from preset early warning categories;
and carrying out early warning on the landslide monitoring area according to the early warning level corresponding to each concave-convex body area.
According to the interface type soil landslide monitoring and early warning method based on the concave-convex body theory provided by the invention, the early warning level corresponding to the deformation speed of each concave-convex body region is determined from preset early warning categories, and the method comprises the following steps:
under the condition that the deformation speed of the concave-convex body area reaches a first speed threshold value, determining an early warning level corresponding to the concave-convex body area as a warning level;
or under the condition that the deformation speed of the concave-convex body area reaches a second speed threshold value, determining the early warning level corresponding to the concave-convex body area as a warning level;
or under the condition that the deformation speed of the concave-convex body area reaches a third speed threshold value, determining the early warning level corresponding to the concave-convex body area as an alarm level;
the first speed threshold is less than the second speed threshold, which is less than the third speed threshold.
According to the interface type soil landslide monitoring and early warning method based on the concave-convex body theory, the landslide monitoring area is early warned according to the early warning level corresponding to each concave-convex body area, and the method comprises the following steps:
Under the condition that the number of concave-convex body areas with the warning level reaching a first number threshold is determined, warning is carried out on the landslide monitoring area according to the warning level;
under the condition that the number of concave-convex body areas with the warning level reaches a second number threshold value, carrying out early warning on the landslide monitoring area according to the warning level;
and under the condition that the number of the concave-convex body areas with the early warning level reaching the alarm level reaches a third number threshold value, early warning is carried out on the landslide monitoring area according to the alarm level.
According to the interface type soil landslide monitoring and early warning method based on the concave-convex body theory provided by the invention, before the remote sensing image data based on the landslide monitoring area determine the time sequence displacement data of each concave-convex body area in the landslide monitoring area, the method further comprises:
obtaining DEM data of the landslide monitoring area, and extracting gradient grid data corresponding to the landslide monitoring area based on the DEM data;
and determining each concave-convex body area in the landslide monitoring area according to the slope grid data corresponding to the landslide monitoring area.
The invention also provides an interface type soil landslide monitoring and early warning device based on the concave-convex body theory, which comprises:
the first processing module is used for determining time sequence displacement data of each concave-convex body area in the landslide monitoring area based on remote sensing image data of the landslide monitoring area; the concave-convex body area is determined based on gradient information extraction of DEM data of the landslide monitoring area;
the second processing module is used for determining the deformation speed of each concave-convex body area according to the time sequence displacement data of each concave-convex body area;
and the first early warning module is used for carrying out early warning and monitoring on the landslide monitoring area based on the deformation speed of each concave-convex body area.
The invention also provides electronic equipment, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the interface type soil landslide monitoring and early warning method based on the concave-convex body theory is realized when the processor executes the program.
The invention also provides a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the interface type soil landslide monitoring and early warning method based on the concave-convex theory.
The invention also provides a computer program product, which comprises a computer program, wherein the computer program realizes the interface type soil landslide monitoring and early warning method based on the concave-convex body theory when being executed by a processor.
According to the interface type soil landslide monitoring and early warning method and device based on the attapulgite theory, the remote sensing radar technology is utilized, the physical form rule of soil landslide deformation is combined, each attapulgite area in the landslide monitoring area is found out, the time sequence displacement data of each attapulgite area are calculated according to the obtained remote sensing image data of the landslide monitoring area, the deformation speed of each attapulgite area is determined according to the time sequence displacement data of each attapulgite area, so that the displacement deformation condition of each attapulgite area is known, the landslide monitoring area is early warned and monitored according to the deformation speed of each attapulgite area, manual intervention is not needed in the whole process, real-time monitoring of the landslide monitoring area can be realized, the monitoring efficiency is high, and meanwhile, accurate early warning can be realized.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow diagram of an interface type soil landslide monitoring and early warning method based on an asperity theory;
fig. 2 is a schematic diagram of a soil landslide deformation scene in the interface type soil landslide monitoring and early warning method based on the concave-convex theory;
fig. 3 is a schematic structural diagram of an interface type soil landslide monitoring and early warning device based on the concave-convex theory;
fig. 4 is a schematic diagram of the physical structure of the electronic device provided by the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The interface type soil landslide monitoring and early warning method and device based on the concave-convex body theory are described below with reference to fig. 1-4.
Fig. 1 is a schematic flow chart of an interface type soil landslide monitoring and early warning method based on an asperity theory, which is provided by the invention, and as shown in fig. 1, the method comprises the following steps: step 110, step 120 and step 130.
Step 110, determining time sequence displacement data of each concave-convex body area in the landslide monitoring area based on remote sensing image data of the landslide monitoring area; the concave-convex body area is determined based on gradient information extraction of DEM data of the landslide monitoring area;
step 120, determining the deformation speed of each concave-convex area according to the time sequence displacement data of each concave-convex area;
and 130, carrying out early warning monitoring on the landslide monitoring area based on the deformation speed of each concave-convex body area.
Specifically, the landslide monitoring area described in the embodiments of the present invention may be an interface-type loess landslide area to be monitored, where the interface-type loess landslide refers to a loess soil landslide with a relatively flat slope.
The concave-convex body area described in the embodiment of the invention refers to an area where a bulge of concave-convex body shape formed by sliding down a slope body is located in a landslide monitoring area. The method can be used for extracting gradient information and analyzing and determining the gradient information by acquiring DEM data of a landslide monitoring area.
It can be understood that the slope information of the concave-convex body area is changeable due to the rugged topography, and the concave-convex body area is changed according to a certain rule.
The time sequence displacement data described in the embodiment of the invention refers to displacement data corresponding to the concave-convex body region on different time point sequences, can reflect the change condition of the displacement field of the concave-convex body region, and can preliminarily judge that the concave-convex body is close to or is destroyed when judging that the displacement field of the concave-convex body region has acceleration characteristics.
It should be noted that, according to the activity characteristics of the soil landslide, the deformation process of the landslide monitoring area can be divided into five stages including an initial deformation stage, a constant-speed deformation stage, an initial acceleration stage, a medium acceleration deformation stage and a temporary sliding stage.
In the initial deformation stage (also called a stable stage), the displacement field in the stage is very small, the sliding belt basically belongs to a static state, and only after being influenced by external factors such as rainfall or manual activity, the sliding force and the anti-sliding force of a local area behind the sliding belt are unbalanced, so that the local displacement field is caused.
In the constant-speed deformation stage, the stage and the stabilization stage are related, after initial local deformation, the local sliding of the sliding surface gradually tends to balance, the anti-sliding force of the local area gradually restores to a dominant position, and the deformation rate of the sliding surface basically maintains a constant value so as to adjust the mechanical characteristics of the sliding body.
In the early acceleration phase (which is mainly slip deficit). When the sliding force of the sliding belt suddenly increases after being influenced by external factors such as strong rainfall, artificial movement or earthquake, and the sliding force is far greater than the anti-sliding force of the sliding belt, the whole sliding belt area has a remarkable displacement field, which means that the sliding force of the sliding belt increases, the pushing force transmitted to the front end area (or concave-convex body area) of the sliding belt also increases, but the sliding force of the sliding belt does not reach the maximum value at the moment.
In the medium acceleration deformation phase (mainly slip deficit and slip displacement), the entire through displacement of the sliding belt has already occurred, the sliding force on the entire sliding belt is all transferred to the front end region thereof, and the entire sliding belt region surface has a speed field (displacement field) of acceleration characteristics.
In the temporary sliding stage (mainly sliding displacement), at the moment, the concave-convex body positioned in the front end area of the sliding belt is sheared or broken through, so that the downward sliding force of the whole sliding surface exceeds the maximum anti-sliding force, the whole sliding belt and the front end area are accelerated and expanded until the sliding belt is unstable, and if the next concave-convex body area is encountered, the whole sliding belt reenters the next cycle.
Fig. 2 is a schematic diagram of a soil landslide deformation scene in the interface type soil landslide monitoring and early warning method based on the concave-convex theory, as shown in fig. 2, the soil landslide monitoring and early warning method corresponds to the constant-speed deformation stage, a concave-convex region is formed after initial local deformation, the sliding belt above the concave-convex region gradually tends to balance in a sliding manner, a normal stable region is arranged below the concave-convex region, and the deformation rate on the whole landslide interface basically maintains a constant value.
The synthetic aperture microwave radar interference InSAR technology is developed from the original spaceborne technology to the airborne technology and the foundation technology, and is also developed from the large-scale and wide coverage technology to the small-scale and local fine measurement technology, so that the means for monitoring the slope deformation are further enriched.
In view of the technical advantages that the GB-InSAR monitoring technology has higher stability and the measurement accuracy can reach the submillimeter level under the condition of good observation conditions, the method is more beneficial to monitoring the micro deformation of landslide.
Meanwhile, compared with the satellite-borne or airborne InSAR technology, the GB-InSAR monitoring has the following advantages: firstly, the method is simple, the technical problems such as attitude, route and calibration needed by similar spaceborne or airborne are not needed to be solved in the design process, and the method is relatively simple in terms of cost control, monitoring operation or data processing; secondly, the instrument and equipment are easy to carry to the site, monitoring can be carried out at any time, too many preparation processes are not needed, and the monitoring distance can reach about 4 km; thirdly, all-weather monitoring is carried out, the GB-InSAR monitoring is basically not limited by climate conditions, and all-weather continuous observation can be carried out.
In the embodiment of the invention, the GB-InSAR monitoring system equipment can be fixedly arranged at a proper position under the slope foot of a landslide monitoring area, so that the whole landslide monitoring area can be monitored, meanwhile, a total station is used for measuring and recording the reference coordinates of the monitoring equipment, the coordinate system direction adopts the direction of a construction line coordinate system, namely the x-axis direction represents the offset direction, the y-axis direction represents the mileage direction, the z-axis direction represents the elevation, and the information of the azimuth angle beta and the like of the transmitting direction of a radar transmitter is recorded, so that the installation and the application of the early-stage monitoring equipment are completed.
Further, in step 110 of the present invention, the above GB-InSAR monitoring system may be used to observe a landslide monitoring area, obtain remote sensing image data of the landslide monitoring area in real time, and perform data analysis on the remote sensing image data of the landslide monitoring area, so as to obtain time series displacement data of each concave-convex body area in the landslide monitoring area in real time.
In the embodiment of the present invention, before executing step 110, each concave-convex body region in the landslide monitoring region needs to be measured in advance, and by obtaining the monitoring condition of each concave-convex body region, the effective monitoring on the landslide deformation condition of the soil body in the whole landslide monitoring region is realized.
Based on the foregoing embodiment, as an optional embodiment, before determining the time-series displacement data of each asperity region in the landslide monitoring region based on the remote sensing image data of the landslide monitoring region in step 110, the method further includes:
obtaining DEM data of a landslide monitoring area, and extracting gradient grid data corresponding to the landslide monitoring area based on the DEM data;
and determining each concave-convex body area in the landslide monitoring area according to the slope grid data corresponding to the landslide monitoring area.
Specifically, in the embodiment of the present invention, data of the data elevation model (Digital Elevation Model, DEM) of the landslide monitoring area may be obtained through a remote sensing technology or a GPS measurement technology.
Further, in the embodiment of the present invention, gradient information extraction may be performed on the acquired landslide monitoring area DEM data, and corresponding gradient raster data may be acquired, so that gradient information in each raster area in the landslide monitoring area may be clarified.
In view of the gradient change rule characteristics of the concave-convex body areas, analysis and calculation of gradient grid data of the landslide monitoring areas can be utilized, and each concave-convex body area in the landslide monitoring areas can be rapidly located.
According to the method provided by the embodiment of the invention, through extracting the gradient information of the DEM data of the landslide monitoring area and combining the gradient change rule of the concave-convex body area, the position of each concave-convex body area can be rapidly and effectively determined from the landslide monitoring area, and reliable monitoring target data can be provided for subsequent landslide monitoring.
Further, in the embodiment of the present invention, in step 120, according to the time series displacement data of each concave-convex area, the displacement information of each concave-convex area generated at different monitoring moments can be determined, and according to the displacement information, the deformation speed of each concave-convex area in the period of measuring and calculating period can be effectively calculated. The period measuring and calculating period can be in a period unit of days or in a period unit of hours, and can be flexibly set according to actual monitoring requirements.
Further, in the embodiment of the present invention, in step 130, after the deformation speed of each concave-convex body region is obtained, the change state of each concave-convex body region may be determined, so different early warning levels may be set according to different changes, and further, the landslide monitoring region may be subjected to classified early warning monitoring based on the deformation speed of each concave-convex body region, so as to realize accurate monitoring and early warning of the landslide monitoring region.
Optionally, the displacement deformation of the interface loess landslide can be monitored to find out the concave-convex body region and grasp the integral deformation of the landslide body, and the later monitoring stage is carried out after the concave-convex body region is primarily judged, so that the displacement field of the concave-convex body region is focused. When the displacement field of the concave-convex body area changes, the concave-convex body is predicted to be damaged, the landslide body is adjacent to be unstable, and the early warning monitoring stage is started from the later monitoring stage. In the early warning and monitoring stage, the displacement fields of the sliding belt region and the concave-convex body region can have an initial acceleration stage, a medium acceleration stage and a temporary sliding stage, and early warning levels can be respectively set as a warning level, a warning level and an alarm level.
It can be understood that the early warning degree of the three levels of the warning level, the warning level and the alarm level is gradually enhanced, the early warning degree of the alarm level is highest, the early warning degree of the warning level is second, and the early warning degree of the warning level is lowest.
According to the interface type soil landslide monitoring and early warning method based on the concave-convex body theory, through utilizing a remote sensing radar technology and combining with the physical form rule of soil landslide deformation, each concave-convex body region in a landslide monitoring region is found out, time sequence displacement data of each concave-convex body region are calculated according to remote sensing image data of the acquired landslide monitoring region, deformation speed of each concave-convex body region is determined according to the time sequence displacement data of each concave-convex body region, so that displacement deformation conditions of each concave-convex body region are known, and then the landslide monitoring region is monitored in an early warning mode according to the deformation speed of each concave-convex body region.
Based on the foregoing embodiment, as an optional embodiment, determining time-series displacement data of each asperity region in the landslide monitoring region based on remote sensing image data of the landslide monitoring region includes:
Performing interference processing on the remote sensing image data of the landslide monitoring area to obtain a differential interference image corresponding to the remote sensing image data;
and carrying out phase extraction and calculation on the differential interferogram corresponding to the remote sensing image data, and determining time sequence displacement data of each concave-convex body region.
Specifically, in the embodiment of the invention, remote sensing image data of a landslide monitoring area is acquired in real time through a GB-InSAR system, one SAR image can be acquired in 15 seconds, the first SAR image is taken as a super image, repeated observation is carried out every 20 minutes, and continuous observation is carried out for a period of time, so that N SAR images can be obtained. And (3) carrying out image registration on the (N-1) SAR images observed at the later stage and the super image map one by one, and matching pixels representing the same ground object in the target area to the same position during registration, so as to obtain (N-1) interference phase maps.
Further, after the registration of the images is completed, the interference pattern filtering method can be utilized to carry out filtering treatment on the (N-1) interference phase images, the interference phase images are divided into square modules which are overlapped with each other, and then the square modules are transformed into differential interference images to obtain differential interference image sequences, so that differential interference images corresponding to remote sensing image data are obtained.
Further, according to the obtained sequence coherence map, the average coherence coefficient is used as a condition for selecting a coherence target, phase resolving is further performed by using a Delaunay triangle grid method, phase unwrapping of a discrete coherence target is completed, variable quantity data of each coherence pixel is obtained, and therefore time sequence displacement data of each concave-convex body pixel area are extracted.
Optionally, in the embodiment of the present invention, SNAP2 and StaMPS software may be used to perform dry-related calculation on remote sensing image data of the landslide monitoring area, so as to obtain time-series displacement data of each concave-convex body area.
According to the method provided by the embodiment of the invention, the time sequence displacement data of each concave-convex body area can be effectively obtained by carrying out interference processing and phase extraction processing on the remote sensing image data of the landslide monitoring area, the deformation state of each concave-convex body area in the landslide monitoring area is determined, a reliable monitoring index is provided for subsequent early warning, and the effectiveness of interface type soil landslide monitoring early warning based on the concave-convex body theory is improved.
Based on the foregoing embodiments, as an optional embodiment, the early warning monitoring of the landslide monitoring area based on the deformation speed of each asperity area includes:
Determining an early warning level corresponding to the deformation speed of each concave-convex body area from preset early warning categories;
and carrying out early warning on the landslide monitoring area according to the early warning level corresponding to each concave-convex body area.
Specifically, the preset early warning category described in the embodiment of the present invention refers to a preset early warning level, which can be set correspondingly according to different deformation speeds of the target area. It can be appreciated that the early warning level of high deformation speed is higher than the early warning level of low deformation speed.
Based on the foregoing embodiments, as an optional embodiment, determining, from preset early warning categories, an early warning level corresponding to a deformation speed of each concave-convex area includes:
under the condition that the deformation speed of the concave-convex body area reaches a first speed threshold value, determining an early warning level corresponding to the concave-convex body area as a warning level;
or under the condition that the deformation speed of the concave-convex body area reaches a second speed threshold value, determining the early warning level corresponding to the concave-convex body area as the warning level;
or under the condition that the deformation speed of the concave-convex body area reaches a third speed threshold value, determining the early warning level corresponding to the concave-convex body area as an alarm level;
The first speed threshold is less than the second speed threshold, which is less than the third speed threshold.
Specifically, the preset early warning categories described in the embodiment of the present invention may include three categories of warning level, warning level and alarm level.
The first speed threshold described in the embodiment of the invention refers to a data threshold for determining that the early warning level of the concave-convex body area is a warning level, and can represent that the deformation speed of the concave-convex body area is in an initial acceleration state.
The second speed threshold described in the embodiment of the present invention refers to a data threshold for determining that the pre-warning level of the concave-convex body area is a warning level, which may represent that the deformation speed of the concave-convex body area is in a medium speed state.
The third speed threshold described in the embodiment of the present invention refers to a data threshold for determining that the pre-warning level of the concave-convex area is an alarm level, which may represent that the deformation speed of the concave-convex area is in a temporary sliding state.
In the embodiment of the invention, the first speed threshold is smaller than the second speed threshold, the second speed threshold is smaller than the third speed threshold, and the value configuration of each speed threshold can be determined according to the area of the monitored area and the size and the number of the concave-convex areas in the area.
Further, in the embodiment of the present invention, by determining the deformation speed of each concave-convex body region, if it is determined that the deformation speed of one concave-convex body region reaches the first speed threshold, the pre-warning level corresponding to the concave-convex body region may be determined as the warning level; if the deformation speed of the concave-convex body area reaches the second speed threshold value, the early warning level corresponding to the concave-convex body area can be further determined to be the warning level; and if the deformation speed of the concave-convex body area reaches the third speed threshold value, determining that the early warning level corresponding to the concave-convex body area is an alarm level. Therefore, through judging the deformation speed of each concave-convex body area, the early warning level corresponding to each concave-convex body area in the landslide monitoring area can be determined.
Optionally, in the actual early warning implementation process, when the early warning of the warning level is triggered, related warning information can be sent to the front end for display, so that a user is reminded of the current deformation state of the landslide monitoring area; when the warning level is triggered, the relevant warning information can be sent to the front end for display, and meanwhile, voice broadcasting information is output for reminding, so that the warning intensity is improved, and the current state of a landslide monitoring area is reminded for a user; when the early warning of the warning level is triggered, the equipment such as the warning flash lamp, the buzzer and the like can be further triggered to run while the warning information is displayed at the front end and the voice broadcast warning is output, so that a user is reminded that the early warning is up to the highest early warning level, and soil landslide can occur in a landslide monitoring area.
According to the method provided by the embodiment of the invention, the deformation speed of each concave-convex body area in the landslide monitoring area is monitored, different early warning levels are set according to different landslide states reflected by different deformation speeds of the concave-convex body areas, so that the grading early warning of soil landslide monitoring is realized, and the method is beneficial to users to cope with various emergency situations scientifically and reasonably.
Further, in the embodiment of the invention, according to the acquired early warning levels corresponding to each concave-convex body area, the number of concave-convex body areas triggering various early warning levels is counted, and according to the total number of concave-convex body areas with different early warning levels, accurate early warning is carried out on the landslide monitoring area.
According to the method provided by the embodiment of the invention, the early warning level of each concave-convex body area is determined by monitoring the deformation speed of each concave-convex body area in the landslide monitoring area, so that key early warning monitoring indexes are found, the number of concave-convex body areas with different early warning levels is counted, the landslide state of the whole landslide monitoring area is judged, and scientific early warning and accurate early warning of the landslide monitoring area can be effectively realized.
Based on the foregoing embodiment, as an optional embodiment, the pre-warning is performed on the landslide monitoring area according to the pre-warning level corresponding to each concave-convex body area, including:
Under the condition that the number of concave-convex body areas with warning levels reaches a first number threshold value, warning is carried out on landslide monitoring areas according to the warning levels;
under the condition that the number of concave-convex body areas with the warning level reaches a second number threshold value, warning is carried out on the landslide monitoring area according to the warning level;
and under the condition that the number of the concave-convex body areas with the early warning level being the warning level reaches a third number threshold value, early warning is carried out on the landslide monitoring area according to the warning level.
Specifically, the first number described in the embodiments of the present invention refers to a threshold number of asperity regions that trigger warning level early warning.
The second number described in the embodiment of the present invention refers to a threshold value of the number of asperity regions triggering alert level pre-warning.
The third number described in the embodiments of the present invention refers to a number threshold of asperity regions that trigger alert level pre-warning.
In the embodiment of the present invention, the first number, the second number and the third number may also be determined by performing statistical analysis according to the area of the landslide monitoring area and the size of the concave-convex area in the area, which is not particularly limited in the present invention.
In the embodiment of the invention, the number of the concave-convex body areas triggering the same early warning level is counted by acquiring the early warning level corresponding to each concave-convex body area, so that the landslide state of the whole landslide area can be more effectively judged, and the landslide monitoring area is scientifically early warned.
Specifically, when the number of the concave-convex body areas with the warning level reaches the first number threshold value, it can be stated that the whole landslide monitoring area reaches the landslide state of the initial acceleration stage at the moment, so that the landslide monitoring area is warned according to the warning level. In the specific implementation process, related warning information can be sent to the front end for display, so that a user is reminded of the current deformation state of the landslide monitoring area.
When the number of the concave-convex body areas with the warning level reaches the second number threshold value, the landslide state that the whole landslide monitoring area reaches the medium acceleration stage can be indicated, and therefore the landslide monitoring area is warned according to the warning level. In the specific implementation process, the relevant warning information can be sent to the front end for display, and the voice broadcasting information is output for reminding, so that the warning intensity is improved.
When the number of the concave-convex body areas with the warning level reaching the warning level reaches the third number threshold value, the condition that the whole landslide monitoring area reaches the landslide state in the temporary stage can be indicated, and therefore the landslide monitoring area is warned according to the warning level. In the specific implementation process, the device can trigger the front end to display warning information and output voice broadcast alarm, and further trigger equipment such as an alarm flash lamp, a buzzer and the like to run, so that a user is reminded that early warning reaches the highest early warning level, and soil landslide can occur in a landslide monitoring area.
According to the method provided by the embodiment of the invention, the early warning levels of the concave-convex body areas in the landslide monitoring area are monitored in real time, the number of the concave-convex body areas with different early warning levels is counted, the landslide state of the whole landslide monitoring area is judged, the scientific effectiveness of interface type soil landslide monitoring and early warning based on the concave-convex body theory can be improved, and the accurate early warning is realized.
The interface type soil landslide monitoring and early warning device based on the concave-convex theory provided by the invention is described below, and the interface type soil landslide monitoring and early warning device based on the concave-convex theory and the interface type soil landslide monitoring and early warning method based on the concave-convex theory described above can be correspondingly referred to each other.
Fig. 3 is a schematic structural diagram of an interface type soil landslide monitoring and early warning device based on an asperity theory, and as shown in fig. 3, the interface type soil landslide monitoring and early warning device comprises:
a first processing module 310, configured to determine time-series displacement data of each asperity region in the landslide monitoring region based on remote sensing image data of the landslide monitoring region; the concave-convex body area is determined based on gradient information extraction of DEM data of the landslide monitoring area;
a second processing module 320, configured to determine a deformation speed of each concave-convex area according to the time-series displacement data of each concave-convex area;
the first early warning module 330 is configured to perform early warning monitoring on the landslide monitoring area based on the deformation speed of each concave-convex body area.
The interface type soil landslide monitoring and early warning device based on the concave-convex theory can be used for executing the interface type soil landslide monitoring and early warning method embodiment based on the concave-convex theory, and the principle and the technical effect are similar, and are not repeated here.
According to the interface type soil landslide monitoring and early warning device based on the concave-convex body theory, through utilizing a remote sensing radar technology and combining with the physical form rule of soil landslide deformation, each concave-convex body region in a landslide monitoring region is found, time sequence displacement data of each concave-convex body region are calculated according to remote sensing image data of the acquired landslide monitoring region, deformation speed of each concave-convex body region is determined according to the time sequence displacement data of each concave-convex body region, so that displacement deformation conditions of each concave-convex body region are known, and then the landslide monitoring region is monitored in an early warning mode according to the deformation speed of each concave-convex body region.
Based on the foregoing embodiment, as an alternative embodiment, the first processing module 310 is specifically configured to:
performing interference processing on the remote sensing image data of the landslide monitoring area to obtain a differential interference image corresponding to the remote sensing image data;
and carrying out phase extraction and calculation on the differential interferogram corresponding to the remote sensing image data, and determining time sequence displacement data of each concave-convex body region.
Based on the foregoing embodiments, as an alternative embodiment, the first early warning module 330 includes a processing sub-module and an early warning sub-module;
the processing sub-module is used for determining an early warning level corresponding to the deformation speed of each concave-convex body area from preset early warning categories;
the early warning sub-module is used for early warning the landslide monitoring area according to the early warning level corresponding to each concave-convex body area.
Based on the foregoing embodiment, as an alternative embodiment, the processing submodule is specifically configured to:
under the condition that the deformation speed of the concave-convex body area reaches a first speed threshold value, determining an early warning level corresponding to the concave-convex body area as a warning level;
or under the condition that the deformation speed of the concave-convex body area reaches a second speed threshold value, determining the early warning level corresponding to the concave-convex body area as the warning level;
Or under the condition that the deformation speed of the concave-convex body area reaches a third speed threshold value, determining the early warning level corresponding to the concave-convex body area as an alarm level;
the first speed threshold is less than the second speed threshold, which is less than the third speed threshold.
Based on the foregoing embodiments, as an optional embodiment, the early warning submodule is specifically configured to:
under the condition that the number of concave-convex body areas with warning levels reaches a first number threshold value, warning is carried out on landslide monitoring areas according to the warning levels;
under the condition that the number of concave-convex body areas with the warning level reaches a second number threshold value, warning is carried out on the landslide monitoring area according to the warning level;
and under the condition that the number of the concave-convex body areas with the early warning level being the warning level reaches a third number threshold value, early warning is carried out on the landslide monitoring area according to the warning level.
Based on the above embodiments, as an alternative embodiment, the apparatus is specifically further configured to:
obtaining DEM data of a landslide monitoring area, and extracting gradient grid data corresponding to the landslide monitoring area based on the DEM data;
and determining each concave-convex body area in the landslide monitoring area according to the slope grid data corresponding to the landslide monitoring area.
Fig. 4 is a schematic physical structure of an electronic device according to the present invention, as shown in fig. 4, the electronic device may include: processor 410, communication interface (Communications Interface) 420, memory 430 and communication bus 440, wherein processor 410, communication interface 420 and memory 430 communicate with each other via communication bus 440. The processor 410 may call the logic instructions in the memory 430 to execute the interface type soil landslide monitoring and early warning method based on the concave-convex theory provided by the above methods, where the method includes: determining time sequence displacement data of each concave-convex body area in a landslide monitoring area based on remote sensing image data of the landslide monitoring area; the concave-convex body area is determined based on gradient information extraction of DEM data of the landslide monitoring area; determining the deformation speed of each concave-convex body region according to the time sequence displacement data of each concave-convex body region; and carrying out early warning monitoring on the landslide monitoring areas based on the deformation speed of each concave-convex body area.
Further, the logic instructions in the memory 430 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In another aspect, the present invention further provides a computer program product, where the computer program product includes a computer program, where the computer program may be stored on a non-transitory computer readable storage medium, and when the computer program is executed by a processor, the computer is capable of executing the interface type soil landslide monitoring and early warning method based on the asperity theory provided by the above methods, and the method includes: determining time sequence displacement data of each concave-convex body area in a landslide monitoring area based on remote sensing image data of the landslide monitoring area; the concave-convex body area is determined based on gradient information extraction of DEM data of the landslide monitoring area; determining the deformation speed of each concave-convex body region according to the time sequence displacement data of each concave-convex body region; and carrying out early warning monitoring on the landslide monitoring areas based on the deformation speed of each concave-convex body area.
In still another aspect, the present invention further provides a non-transitory computer readable storage medium, on which a computer program is stored, the computer program being implemented when executed by a processor to perform the interface type soil landslide monitoring and early warning method based on the asperity theory provided by the above methods, the method comprising: determining time sequence displacement data of each concave-convex body area in a landslide monitoring area based on remote sensing image data of the landslide monitoring area; the concave-convex body area is determined based on gradient information extraction of DEM data of the landslide monitoring area; determining the deformation speed of each concave-convex body region according to the time sequence displacement data of each concave-convex body region; and carrying out early warning monitoring on the landslide monitoring areas based on the deformation speed of each concave-convex body area.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An interface type soil landslide monitoring and early warning method based on an asperity theory is characterized by comprising the following steps:
determining time sequence displacement data of each concave-convex body area in a landslide monitoring area based on remote sensing image data of the landslide monitoring area; the concave-convex body area is determined based on gradient information extraction of DEM data of the landslide monitoring area;
determining the deformation speed of each concave-convex body region according to the time sequence displacement data of each concave-convex body region;
and carrying out early warning monitoring on the landslide monitoring areas based on the deformation speed of each concave-convex body area.
2. The method for monitoring and early warning of landslide of an interface type soil body based on a concave-convex body theory according to claim 1, wherein the determining of time series displacement data of each concave-convex body region in the landslide monitoring region based on remote sensing image data of the landslide monitoring region comprises the following steps:
Performing interference processing on the remote sensing image data of the landslide monitoring area to obtain a differential interference image corresponding to the remote sensing image data;
and carrying out phase extraction and calculation on the differential interferogram corresponding to the remote sensing image data, and determining time sequence displacement data of each concave-convex body region.
3. The method for monitoring and early warning landslide of an interface type soil body based on an asperity theory according to claim 1, wherein the step of early warning and monitoring the landslide monitoring area based on the deformation speed of each asperity area comprises the following steps:
determining an early warning level corresponding to the deformation speed of each concave-convex body area from preset early warning categories;
and carrying out early warning on the landslide monitoring area according to the early warning level corresponding to each concave-convex body area.
4. The method for monitoring and early warning of landslide of an interface soil body based on an asperity theory according to claim 3, wherein the determining the early warning level corresponding to the deformation speed of each asperity region from the preset early warning categories comprises:
under the condition that the deformation speed of the concave-convex body area reaches a first speed threshold value, determining an early warning level corresponding to the concave-convex body area as a warning level;
Or under the condition that the deformation speed of the concave-convex body area reaches a second speed threshold value, determining the early warning level corresponding to the concave-convex body area as a warning level;
or under the condition that the deformation speed of the concave-convex body area reaches a third speed threshold value, determining the early warning level corresponding to the concave-convex body area as an alarm level;
the first speed threshold is less than the second speed threshold, which is less than the third speed threshold.
5. The method for monitoring and early warning of landslide of an interface type soil body based on an asperity theory according to claim 4, wherein the step of early warning the landslide monitoring area according to the early warning level corresponding to each asperity area comprises the steps of:
under the condition that the number of concave-convex body areas with the warning level reaching a first number threshold is determined, warning is carried out on the landslide monitoring area according to the warning level;
under the condition that the number of concave-convex body areas with the warning level reaches a second number threshold value, carrying out early warning on the landslide monitoring area according to the warning level;
and under the condition that the number of the concave-convex body areas with the early warning level reaching the alarm level reaches a third number threshold value, early warning is carried out on the landslide monitoring area according to the alarm level.
6. The method for monitoring and early warning of an interfacial soil body landslide based on a theory of concave-convex body according to any one of claims 1 to 5, wherein before the remote sensing image data based on the landslide monitoring area determines the time series displacement data of each concave-convex body area in the landslide monitoring area, the method further comprises:
obtaining DEM data of the landslide monitoring area, and extracting gradient grid data corresponding to the landslide monitoring area based on the DEM data;
and determining each concave-convex body area in the landslide monitoring area according to the slope grid data corresponding to the landslide monitoring area.
7. Interface type soil landslide monitoring and early warning device based on concave-convex body theory, which is characterized by comprising:
the first processing module is used for determining time sequence displacement data of each concave-convex body area in the landslide monitoring area based on remote sensing image data of the landslide monitoring area; the concave-convex body area is determined based on gradient information extraction of DEM data of the landslide monitoring area;
the second processing module is used for determining the deformation speed of each concave-convex body area according to the time sequence displacement data of each concave-convex body area;
And the first early warning module is used for carrying out early warning and monitoring on the landslide monitoring area based on the deformation speed of each concave-convex body area.
8. An electronic device comprising a memory, a processor and a computer program stored in the memory and operable on the processor, wherein the processor implements the interface type soil landslide monitoring and early warning method based on the asperity theory as set forth in any one of claims 1 to 6 when executing the program.
9. A non-transitory computer readable storage medium having a computer program stored thereon, wherein the computer program when executed by a processor implements the interface-type soil landslide monitoring and early warning method based on the asperity theory as set forth in any one of claims 1 to 6.
10. A computer program product comprising a computer program, characterized in that the computer program, when executed by a processor, implements the interface type soil landslide monitoring and early warning method based on the asperity theory as defined in any one of claims 1 to 6.
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| CN117686687B (en) * | 2024-02-01 | 2024-04-16 | 内蒙古工业大学 | Interface type scale model landslide simulation test device and simulation method |
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