Mountainous region slump geological disaster high position property recognizing method based on landscape unit

A technology of geological disasters and identification methods, which is applied in the directions of scene recognition, height/horizontal measurement, character and pattern recognition, etc., can solve the problems of increased threat of high-level geological disasters, difficulty in hidden danger investigation, low practicability, etc., and achieve the elimination of strong Concealment and difficulty of investigation, avoiding personnel safety damage and property loss, eliminating strong destructive effects

Active Publication Date: 2019-03-01

SICHUAN HUIZHI ANTAI TECH

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[0008] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a highly practical, timely and accurate method for identifying the high-level properties of landslide geological disasters in mountainous areas based on geomorphic units, which enables timely and accurate identification of high-level geological disasters. Troubles...

Method used

[0044] S6: For the screened high-level geological disaster points or high-level geological disaster key areas, carry out batch ident...

Abstract

The invention discloses a mountainous region slump geological disaster high position property recognizing method based on the landscape unit. The method comprises the following steps that S1 a mountainous region is divided into different areas based on landscape unit; S2 landscape parameters are extracted, and independent evaluation layers are formed; S3 geological disaster points meeting the requirements serve as high position geological disaster points; S4 the region guiding layer where a high position geological disaster is prone to occur is distinguished and serves as an important checkingregion; S5 a high position geological disaster important region is obtained; and S6 the high position property of the geological disaster is recognized in batches. The method solves the problems thatthe practicality is low because potential danger checking is hard to realize, the threatens of the high position geological disaster are increased because the potential danger checking cannot be conducted timely, and the precision is low because speculation and recognition cannot be conducted according to effective evidences and data existing in the prior art.

Application Domain

Earth material testingScene recognition +1

Technology Topic

Mountainous terrainGeological disaster +1

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[0037] The following describes the specific embodiments of the present invention to facilitate those skilled in the art to understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments, for those of ordinary skill in the art, as long as various changes These changes are obvious within the spirit and scope of the present invention defined and determined by the appended claims, and all inventions and creations using the concept of the present invention are protected.

[0038] A method for identifying high-level nature of mountain collapse and landslide geological disasters based on geomorphic units, such as figure 1 As shown, including the following steps:

[0039] S1: Divide mountainous areas into geomorphological units, such as figure 2 Shown

[0040] S2: Take the geomorphological unit as the basic analysis unit, extract topographic parameters, and form an independent evaluation layer;

[0041] S3: Use geohazard points to extract the topographic parameters of the evaluation layer and the elevation value of the geohazard, and use geohazard points that meet the conditions as high-level geohazard points;

[0042] S4: Perform statistical zoning on the evaluation layers that meet the conditions, and distinguish the guiding layers of high-level geological hazards, such as image 3 Shown as a key area for investigation;

[0043] S5: Conduct high-level geological remote sensing surveys on key areas for investigation, and map the directions and boundaries of potential geological hazards to obtain key areas for high-level geological disasters;

[0044] S6: Identify the high-level attributes of geological hazards in batches for the high-level geological hazard points or key areas of high-level geological hazards screened, so as to realize the rapid identification of the high-level nature of geological hazards.

[0045] In this embodiment, in step S1, the landform unit is also called the slope unit, which is the basic unit for the development of landslides and collapse geological hazards, and among all the control or influence factors, the development stage of rivers and valleys has control over the formation of landslides and collapses. effect;

[0046] The landform unit is a single landform formed by the intersection of ridges and valley lines on the landform, and is used to collectively reflect the local landform environment where the collapse and landslide geological disasters develop;

[0047] The geomorphic unit is generated by forming the front and back topography of the contour line and using a series of hydrological analysis.

[0048] In this embodiment, in step S2, the terrain parameters in the terrain unit are extracted according to the basic terrain data of 1:50000;

[0049] Terrain parameters include average slope, minimum elevation, and maximum elevation.

[0050] In this embodiment, in step S3, satisfying conditions are that the slope of the geological disaster point is greater than 25° and the height difference of the geological disaster is greater than 100m;

[0051] In step S4, satisfying the conditions is that the average slope in the geomorphic unit is greater than 25° and the height difference of the geomorphic unit is greater than 100m.

[0052] In this embodiment, the calculation formula for the height difference of geological disasters is:

[0053] c 1 =h'-h min

[0054] Where c 1 Is the height difference of geological disasters; h'the height value of geological disasters; h min Minimum elevation

[0055] The calculation formula for the height difference of the geomorphic unit is:

[0056] c 2 =h max -h min

[0057] Where c 2 Is the height difference of the geomorphic unit; h max Is the highest elevation; h min Is the lowest elevation.

[0058] In this embodiment, in step S5, follow the main traffic arteries and main residential areas to carry out high-level geological remote sensing investigation, and mark the suspected geological hazards with obvious signs of deformation in the image, so as to realize the use of terrain data to identify potential geological hazards. The direction and boundary of the drawing.

[0059] The invention provides a method for identifying the high-level nature of mountain collapse and landslide geological disasters with high practicability, good timeliness, and high accuracy based on geomorphological units, which performs timely and accurate investigations on high-level geological disasters, and solves the problems of the prior art It is difficult to realize the problems of low practicability caused by hidden danger investigation, the increased threat of high-level geological disasters caused by the inability to conduct hidden danger investigation in time, and the low accuracy caused by the inability to speculate and identify based on valid evidence and data.

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Mountainous region slump geological disaster high position property recognizing method based on landscape unit

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