CN-121788749-B - Prediction method, system, equipment and medium for soil slope potential landslide influence range and form

CN121788749BCN 121788749 BCN121788749 BCN 121788749BCN-121788749-B

Abstract

The invention discloses a method, a system, equipment and a medium for predicting the influence range and the form of a potential landslide of an earth slope, which specifically comprise the following steps of S1, identifying the potential slip surface; S2, calculating the intersection point of the sliding surface and the side slope, calculating the soil area before the sliding surface, S3, calculating the soil area after the sliding surface, S4, calculating the distance of the farthest point of the soil sliding after the sliding surface according to the content of S3, and S5, drawing the obtained coordinates of the toe of the sliding surface and the soil area after the sliding surface into the side slope section, so that the influence range and the form of the potential sliding surface after the sliding can be clearly reconstructed. According to the invention, the potential sliding surface is calculated by adopting the Geo-Slope software, the software can accurately identify the potential sliding surface of the side Slope based on a limit balance method, and the volume of the sliding body can be accurately calculated by combining the sliding surface position function. The process combines the traditional method with the modern calculation tool, and the scientificity and the accuracy of landslide prediction are obviously improved.

Inventors

LEI JING
LIN LAIRONG
NIU GUOFENG
WANG XIMING
ZHANG JIE
JI RONG

Assignees

湖南大中赫锂矿有限责任公司

Dates

Publication Date: 20260512
Application Date: 20260309

Claims (9)

1. The method for predicting the influence range and the form of the potential landslide of the soil slope is characterized by comprising the following specific steps: S1, identifying potential slip planes, namely acquiring section information of a target area, including size information and rock and soil material information, according to Geo-Slope and a function equation of the potential slip planes, based on an arc slip method, utilizing a geometric principle and numerical integration to calculate the slip position and form of the potential slip planes, accurately reconstructing the space form of the slip planes in the section, and establishing a section coordinate system to determine models before and after the slip of a soil body; S2, calculating the intersection point of the sliding surface and the side slope, and calculating the soil body area before sliding; drawing a slope section according to engineering design data and section information, and calculating the intersection point of a slip plane and a slip body according to the arc slip plane and a slip body slope function so as to obtain point location information of a soil body section area coordinate system before the slip; s3, calculating the area of the soil body after the landslide, based on a geometric principle, calculating a slope surface equation of the landslide after the landslide by utilizing a landslide foot point and an arc sliding surface upper end point after the landslide, and calculating the intersection point coordinates of the initial slope surface and the landslide after the landslide by combining an initial sliding surface function so as to calculate the section area of the soil body after the landslide; S4, calculating the distance of the farthest point of the soil body sliding down after landslide according to the content of S3; s5, drawing the obtained coordinates of the toe of the landslide and the area of the soil body after the landslide into a slope section, and clearly reconstructing the influence range and the form of the potential sliding surface after sliding.
2. The method for predicting the potential landslide influence range and form of an earth slope according to claim 1, wherein the rock-soil material information comprises a loosening coefficient K, the K is 1.2-1.8, and the size information comprises a slope height, a slope angle and a slope length.
3. The method for predicting the influence range and the form of the potential landslide of the soil slope according to claim 1 or 2, wherein in the step S1, the model before and after the soil body slides comprises the initial state area of the slope, the state area after the slope slides, the bottom slope foot area, the sliding belt area and the area before the sliding body acts in a cross-section coordinate system.
4. The method for predicting the range of influence and the morphology of a potential landslide of an earth slope according to claim 3, wherein S1 further comprises: S11, a slip plane function equation is as follows: (x-a) 2 +（y-b） 2 =R 2 , wherein x and y are respectively the horizontal and vertical coordinates of a plane rectangular coordinate system, and R is the radius of an arc sliding method; The initial sliding body slope function is y=sinα×x, let the coordinates of the slope toe after the sliding slope be (x A ,0）,x A <0; where α is the slope toe, sinα represents the slope of the slope, (x A , 0) represents the coordinates of the new slope toe after the sliding slope, x A <0 represents that the new slope toe is located on the left side of the initial slope toe point, and y=0 represents that the slope toe is located on the horizontal ground.
5. The method for predicting the potential landslide influence range and form of an earth slope according to claim 4, wherein the step S2 is characterized in that different points of the area before the landslide body acts are obtained by combining the sliding surface function equation in the step S11 and the initial sliding surface function, and the area before the landslide body acts is calculated according to the points.
6. The method for predicting the potential landslide influence range and form of an earth slope according to claim 5, wherein the step S3 is characterized in that the sectional area of the earth body after landslide is calculated by combining the coordinates of the toe after landslide through different points of the area before the landslide body acts in the step S2.
7. A system for predicting the range of influence and morphology of a potential landslide of an earth slope, for implementing the method of any one of claims 1-4, comprising: The data acquisition unit is used for acquiring the size information and the rock-soil material information of the target slope body and recording engineering design data; The model operation unit is formed by the method of the steps S1-S5, the model comprises a data input port and an output port, the input port corresponds to the size information of the target slope body and the rock and soil material information one by one, and the model operation unit is used for inputting and then operating the data obtained by the data acquisition unit to obtain a predicted value of the influence range and the form after the sliding of the potential sliding surface; the control unit is respectively connected with the data acquisition unit and the model operation unit, adjusts the calculation force of the model operation unit through the central processing unit, and comprises a hard disk module for storing the output prediction data.
8. A computer device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the method of any of claims 1-6 or the functions of the system of claim 7 when the computer program is executed by the processor.
9. A computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method of any of claims 1-6 or the functions of the system of claim 7.

Description

Prediction method, system, equipment and medium for soil slope potential landslide influence range and form Technical Field The invention relates to the field of geological displacement area prediction, in particular to a method, a system, equipment and a medium for predicting the influence range and the form of a potential landslide of an earth slope. Background In recent years, with the urban ization of mountain areas and the large-scale construction of traffic networks, landslide disasters caused by soil slope instability form serious threats to engineering safety. In geotechnical engineering, slope stability is a key factor affecting engineering safety, and in typical high-risk sections such as open-pit mining engineering, natural steep slopes, tunnel portal sections, high-fill engineering and the like, the occurrence of slope sliding can directly cause multi-dimensional risks such as personnel life threat, engineering machinery damage, blocked mineral resource development process, environmental pollution (such as acidic mine drainage and slope vegetation systematic damage) and the like, so that the accurate prediction of the influence range after the sliding has become a serious issue of ecological environment construction in China. The influence range and the accumulation form after the slope landslide are determined can accurately define disaster influence areas, scientific basis is provided for personnel evacuation, traffic control and important facility protection, life and property loss is reduced to the maximum extent, and quantitative relation between the influence range and rainfall intensity and earthquake motion parameters can be established to form a dynamic risk early warning model. However, due to factors such as geological condition complexity, model applicability boundaries, data acquisition difficulty, multi-factor coupling, dynamic evolution prediction and the like, obvious technical bottlenecks exist in analyzing the disaster-causing range after landslide. Conventional stability analysis usually focuses on evaluation of safety coefficients, and for a slope which is once unstable, a quantitative prediction method is lacking in motion trail, distribution range and volume change of the slope body after sliding. The current mature stability analysis tool such as Geo-Slope series software (e.g. Slope/W) can determine the two-dimensional potential slip plane based on the arc slip failure criterion, but there is no systematic deduction mechanism for soil distribution and accumulation form after landslide. Therefore, a method for predicting the volume scale and the influence range of a potential slip after landslide based on the initial slip plane information, mass conservation, and loosening coefficient is needed. In the prior art with the patent number of CN108334719A, three-dimensional position coordinates at monitoring points are mainly utilized to effectively decompose step landslide displacement data to obtain a trend item displacement sequence and an induction item displacement sequence, and landslide displacement is predicted through the data. The method in the prior art simulates the large deformation process of the landslide by constructing a geometrical model of the side slope and endowing corresponding material constitutive relations, reproduces deformation characteristics of the rock-soil body at different times and positions, and predicts the potential damage mode and the sliding surface position more accurately. The method is suitable for simulating complex landslide movement, but has poor applicability and practicality, fails to fully reflect the real process and internal law of landslide evolution, and manually corrects microscopic parameters with randomness, blindness and non-uniqueness. Disclosure of Invention The invention aims to overcome the defects of the prior art, and provides a method, a system, equipment and a medium for predicting the influence range and the form of a potential landslide of a soil slope, which mainly solve the problem of insufficient accuracy compared with the actual landslide in the prior art. In order to solve the technical problems, the invention provides the following technical scheme: in a first aspect of the present invention, a method for predicting a landslide influence range and a landslide morphology of a soil slope potential slip is provided, which specifically comprises the following steps: S1, identifying potential slip planes, namely acquiring section information of a target area, including size information and rock and soil material information, according to Geo-Slope and a function equation of the potential slip planes, based on an arc slip method, utilizing a geometric principle and numerical integration to calculate the slip position and form of the potential slip planes, accurately reconstructing the space form of the slip planes in the section, and establishing a section coordinate system to determine models before and after the