Transmission tower site selection method and system based on remote sensing and slope instability model

Abstract

The invention provides a transmission tower site selection method and system based on a remote sensing and slope instability model, and the method comprises the steps: carrying out the preprocessing of the obtained remote sensing data of a mountain, and extracting the feature data of slope instability; building a remote sensing and slope instability model, and predicting slope risk data; determining a slope instability risk value according to the slope risk data, and determining preliminary necessary distribution points of the power transmission tower according to the slope instability risk value and a site selection standard of the power transmission tower; establishing a power transmission tower primary selection address according to the primary necessary distribution points, establishing a power transmission tower simulation model for the primary selection address, adding risk disturbance, and obtaining a simulation test result; and according to a simulation test result, selecting necessary distribution points from the preliminary necessary distribution points, and establishing a final address of transmission tower site selection. According to the method, the slope instability risk of the mountain is determined, so that site selection is performed by avoiding the risk, the slope instability risk is eliminated for transmission tower site selection, safety and stability of the transmission tower are guaranteed, and stable operation of a power system is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of power transmission lines, and in particular to a method and system for selecting a transmission tower site based on remote sensing and a slope instability model. Background Art

[0002] The traditional site selection method for transmission towers requires manual survey and planning, and often requires a large amount of manpower and material resources for on-site operations. The planning cycle of power grid lines is long, resulting in low efficiency of power grid planning, which affects the development speed of power grid construction. The main consideration for site selection of transmission towers on slopes is natural disasters, especially geological disasters such as slopes, which have complex inducing conditions. Among them, building towers on slopes is the most frequent and obvious disturbance of transmission lines to the geological areas along the way. Therefore, a method for site selection of transmission towers is needed to avoid serious landslides on slopes under specific rainstorm conditions, which may lead to the collapse of towers, damage to lines, and economic losses to power-consuming areas. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a method and system for selecting a site for a transmission tower based on remote sensing and a slope instability model, so as to solve or at least partially solve the above-mentioned problems existing in the prior art.

[0004] To achieve the above object, the present invention provides a first aspect of a method for selecting a transmission tower site based on remote sensing and a slope instability model, the method comprising the following steps:

[0005] S101, obtaining remote sensing data of mountains in the target area through a satellite remote sensing system;

[0006] S102, preprocessing the remote sensing data of the mountains in the target area, and extracting characteristic data of slope instability from the preprocessed remote sensing data;

[0007] S103, constructing a remote sensing and slope instability model, and using the remote sensing and slope instability model to predict the slope risk data of the mountain in the target area based on the characteristic data of slope instability.

[0008] S104, analyzing the slope stability of the mountain in the target area based on the slope risk data of the mountain in the target area, and obtaining the slope instability risk value of the mountain in the target area;

[0009] S105, obtaining the site selection criteria for the transmission towers, and determining the preliminary necessary distribution points of the transmission towers in the target area according to the slope instability risk value of the mountain in the target area and the site selection criteria for the transmission towers;

[0010] S106, establishing a preliminary address of the transmission tower based on the preliminary necessary distribution points of the transmission tower in the target area;

[0011] S107, building a simulation model of the transmission towers in the target area based on the preliminary selected addresses of the transmission towers, performing simulation operation on the simulation model of the transmission towers in the target area, and adding risk disturbances during the simulation operation to obtain simulation test results;

[0012] S108. Select necessary distribution points from preliminary necessary distribution points of transmission towers in the target area based on the simulation test results, and establish a final address for siting of transmission towers in the target area based on the necessary distribution points.

[0013] Furthermore, the preprocessing operation includes data cleaning and data fusion.

[0014] Furthermore, the specific steps of building the remote sensing and slope instability model are as follows:

[0015] S31, obtaining remote sensing data of the mountains in the target area collected by a satellite remote sensing system, and obtaining historical slope risk data corresponding to the mountains in the target area;

[0016] S32, performing a preprocessing operation on the remote sensing data and the historical slope risk data of step S31 to obtain target remote sensing data and target historical slope risk data;

[0017] S33, extracting characteristic data of the target remote sensing data, and associating the characteristic data of the target remote sensing data with the target historical slope risk data;

[0018] S34, using the characteristic data of the target remote sensing data and the target historical slope risk data associated in step S33 as input data and output data of a preset training network, respectively, and training the preset training network to generate a remote sensing and slope instability model.

[0019] Furthermore, the slope stability of the target area mountain based on the slope risk data analysis of the target area mountain includes a slope rainwater infiltration stability analysis, and the slope rainwater infiltration stability analysis includes a saturated slope rainwater infiltration analysis, an unsaturated slope rainwater infiltration analysis, and a saturated-unsaturated slope rainwater infiltration analysis.

[0020] Furthermore, the adding of risk disturbances during the simulation operation includes adding regional disturbances under the influence of tower loads and regional disturbances under the influence of civil engineering projects.

[0021] Furthermore, the regional disturbance under the influence of the tower load includes the wind load disturbance at the transmission tower head and the wind load disturbance at the transmission tower body.

[0022] Furthermore, the selecting necessary distribution points from the preliminary necessary distribution points of the transmission towers in the target area based on the simulation test results includes:

[0023] Based on the simulation test results, determine whether each preliminary necessary distribution point has a high regional risk, and select the preliminary necessary distribution points that do not have a high regional risk as necessary distribution points;

[0024] The regional high risks include regional high risks under the influence of tower loads and regional high risks under the influence of civil engineering projects.

[0025] A second aspect of the present invention provides a transmission tower site selection system based on remote sensing and slope instability model, comprising:

[0026] Data processing unit: used to obtain remote sensing data of the mountains in the target area through a satellite remote sensing system, perform preprocessing operations on the remote sensing data, and extract characteristic data of slope instability from the preprocessed remote sensing data;

[0027] Data prediction unit: used to build remote sensing and slope instability models, and predict the slope risk data of the target area based on the characteristic data of slope instability;

[0028] Distribution point determination unit: used to determine the slope instability risk value of the target area mountain according to the slope risk data of the target area mountain, obtain the site selection standard of the transmission tower, and determine the preliminary necessary distribution points of the transmission tower in the target area according to the slope instability risk value of the target area mountain and the site selection standard of the transmission tower;

[0029] Simulation unit: used to establish the preliminary addresses of transmission towers according to the preliminary necessary distribution points of transmission towers in the target area, build a simulation model of the transmission tower for the preliminary addresses, simulate the simulation model of the transmission tower, and add risk disturbances during the simulation process to obtain simulation test results;

[0030] Site selection unit: used to select necessary distribution points from the preliminary necessary distribution points of transmission towers in the target area according to the simulation test results, and establish the final address of the site selection of transmission towers in the target area through the necessary distribution points.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The present invention predicts the slope risk data of the mountain in the target area according to the characteristic data of slope instability through the remote sensing and slope instability models built, and determines the slope instability risk value of the mountain in the target area according to the slope risk data, which can effectively determine the slope instability risk of the mountain, thereby avoiding the risk for site selection, and can eliminate the slope instability risk for the site selection of transmission towers, thereby ensuring the safety and stability of the transmission towers, and further ensuring the stable operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 A schematic diagram of a process flow of a method for selecting a transmission tower site based on remote sensing and a slope instability model provided by an embodiment of the present invention;

[0035] Figure 2 A schematic structural diagram of a transmission tower site selection system based on remote sensing and slope instability model provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0036] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The enumerated embodiments are only used to explain the present invention and are not used to limit the scope of the present invention.

[0037] This embodiment provides a method for selecting a site for a transmission tower based on remote sensing and a slope instability model, the method comprising the following steps:

[0038] like Figure 1 As shown, a flow chart of a method for selecting a transmission tower site based on remote sensing and slope instability model is provided, including:

[0039] S101. Acquire remote sensing data of mountains in a target area through a satellite remote sensing system.

[0040] S102, preprocessing the remote sensing data of the mountains in the target area, and extracting characteristic data of slope instability from the preprocessed remote sensing data, specifically including:

[0041] The remote sensing data of the mountains in the target area are cleaned and fused in turn.

[0042] S103, building a remote sensing and slope instability model, using the remote sensing and slope instability model to predict the slope risk data of the mountain in the target area based on the characteristic data of slope instability, wherein the building of the remote sensing and slope instability model specifically includes the following steps:

[0043] S31, obtaining remote sensing data of the mountains in the target area collected by a satellite remote sensing system, and obtaining historical slope risk data corresponding to the mountains in the target area;

[0044] S32, performing a preprocessing operation on the remote sensing data and the historical slope risk data of step S31 to obtain target remote sensing data and target historical slope risk data;

[0045] S33, extracting characteristic data of the target remote sensing data, and associating the characteristic data of the target remote sensing data with the target historical slope risk data;

[0046] S34, using the characteristic data of the target remote sensing data and the target historical slope risk data associated in step S33 as input data and output data of a preset training network, respectively, and training the preset training network to generate a remote sensing and slope instability model.

[0047] S104, analyzing the slope stability of the mountain in the target area based on the slope risk data of the mountain in the target area, and obtaining the slope instability risk value of the mountain in the target area, specifically including:

[0048] The slope stability of the target area mountain analyzed based on the slope risk data of the target area mountain includes a slope rainwater infiltration stability analysis, and the slope rainwater infiltration stability analysis includes a saturated slope rainwater infiltration analysis, an unsaturated slope rainwater infiltration analysis, and a saturated-unsaturated slope rainwater infiltration analysis;

[0049] The specific expression of saturated slope rainwater infiltration analysis is:

[0050]

[0051] Among them, v is the average flow velocity on the slope, k is the saturated infiltration coefficient, dh is the rainwater potential energy, which is the gravitational potential energy of rainwater at a high altitude, ds is the rainwater potential energy loss rate of process s, and J is the infiltration slope;

[0052] The specific expression of rainwater infiltration analysis on unsaturated slope is:

[0053]

[0054] Among them, K w is the permeability coefficient, k s is the saturated permeability coefficient, u a is the air pressure in the infiltration gap, u w is the infiltration gap water pressure, b is the test constant, and β is the coefficient;

[0055] The specific expression of saturated-unsaturated slope rainwater infiltration analysis is:

[0056] q=-K ij k r (s)[p-ρ f x j g j ] l

[0057] Where q is the simulated value of the flow of saturated-unsaturated slope rainwater infiltration soil, K ij is the saturated permeability coefficient tensor, kr (s)=s 2 (3-2s), s is saturation, p is pressure, ρ f is the fluid density, x j is the coordinate component, g j is the gravitational acceleration component, l=1,3.

[0058] S105. Acquire the site selection criteria for transmission towers, and determine the preliminary necessary distribution points of transmission towers in the target area according to the slope instability risk value of the mountain in the target area and the site selection criteria for transmission towers.

[0059] S106. Establishing preliminary addresses of transmission towers based on the preliminary necessary distribution points of transmission towers in the target area.

[0060] S107, building a simulation model of the transmission towers in the target area based on the preliminary selected addresses of the transmission towers, performing simulation operation on the simulation model of the transmission towers in the target area, and adding risk disturbances during the simulation operation to obtain simulation test results, specifically including:

[0061] Adding risk disturbances during the simulation operation includes adding regional disturbances under the influence of tower loads and regional disturbances under the influence of civil engineering projects;

[0062] The regional disturbance under the influence of the tower load includes the wind load disturbance of the transmission tower head and the wind load disturbance of the transmission tower body;

[0063] The wind load disturbance at the transmission tower head is specifically expressed as:

[0064]

[0065] Among them, q1 is the wind load on the transmission tower head, μ z is the wind pressure coefficient, μ s is the body shape coefficient, β z is the wind load adjustment coefficient, B is the wind load increase coefficient, W0 is the basic wind pressure, A f is the projection area of ​​the transmission tower head, h1 is the height of the transmission tower head;

[0066] The wind load disturbance of the transmission tower is specifically expressed as:

[0067]

[0068] Among them, q2 is the wind load on the transmission pole tower, and h2 is the height of the transmission pole tower;

[0069] When the wind speed of the mountain slope is ≤20m / s, the maximum value of the combination of the regional disturbance under the influence of the tower load and the regional disturbance under the influence of the civil engineering project remains unchanged, and the overall stability of the mountain slope remains unchanged; when the wind speed of the mountain slope is ≥20m / s, the regional disturbance under the influence of the civil engineering project has little effect on the overall stability of the mountain slope, but has a greater impact on the stability of the local slope, greatly reducing the stability of the local slope.

[0070] S108, selecting necessary distribution points from the preliminary necessary distribution points of the transmission towers in the target area based on the simulation test results, and establishing the final address of the site selection of the transmission towers in the target area based on the necessary distribution points, specifically including:

[0071] Based on the simulation test results, determine whether each preliminary necessary distribution point has a high regional risk, and select the preliminary necessary distribution points that do not have a high regional risk as necessary distribution points;

[0072] The regional high risks include regional high risks under the influence of tower loads and regional high risks under the influence of civil engineering projects.

[0073] Another embodiment of the present invention provides a transmission tower site selection system based on remote sensing and slope instability model, comprising:

[0074] like Figure 2 As shown, a schematic diagram of the structure of a transmission tower site selection system based on remote sensing and slope instability model is provided, including:

[0075] Data processing unit: used to obtain remote sensing data of the mountains in the target area through a satellite remote sensing system, perform preprocessing operations on the remote sensing data, and extract characteristic data of slope instability from the preprocessed remote sensing data;

[0076] Data prediction unit: used to build remote sensing and slope instability models, and predict the slope risk data of the target area based on the characteristic data of slope instability;

[0077] Distribution point determination unit: used to determine the slope instability risk value of the target area mountain according to the slope risk data of the target area mountain, obtain the site selection standard of the transmission tower, and determine the preliminary necessary distribution points of the transmission tower in the target area according to the slope instability risk value of the target area mountain and the site selection standard of the transmission tower;

[0078] Simulation unit: used to establish the preliminary addresses of transmission towers according to the preliminary necessary distribution points of transmission towers in the target area, build a simulation model of the transmission tower for the preliminary addresses, simulate the simulation model of the transmission tower, and add risk disturbances during the simulation process to obtain simulation test results;

[0079] Site selection unit: used to select necessary distribution points from the preliminary necessary distribution points of transmission towers in the target area according to the simulation test results, and establish the final address of the site selection of transmission towers in the target area through the necessary distribution points.

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for selecting a transmission tower site based on remote sensing and slope instability model, characterized in that: The method comprises the following steps: S101, obtaining remote sensing data of mountains in the target area through a satellite remote sensing system; S102, preprocessing the remote sensing data of the mountains in the target area, and extracting characteristic data of slope instability from the preprocessed remote sensing data; S103, building a remote sensing and slope instability model, and using the remote sensing and slope instability model to predict the slope risk data of the mountain in the target area based on the characteristic data of slope instability; S104, analyzing the slope stability of the mountain in the target area based on the slope risk data of the mountain in the target area, and obtaining the slope instability risk value of the mountain in the target area; S105, obtaining the site selection criteria for transmission towers, and determining the preliminary necessary distribution points of transmission towers in the target area according to the slope instability risk value of the mountain in the target area and the site selection criteria for transmission towers; S106, establishing a preliminary address of the transmission tower based on the preliminary necessary distribution points of the transmission tower in the target area; S107, building a simulation model of the transmission towers in the target area based on the preliminary selected addresses of the transmission towers, performing simulation operation on the simulation model of the transmission towers in the target area, and adding risk disturbances during the simulation operation to obtain simulation test results; S108. Select necessary distribution points from preliminary necessary distribution points of transmission towers in the target area based on the simulation test results, and establish a final address for siting of transmission towers in the target area based on the necessary distribution points.

2. A method for selecting a transmission tower site based on remote sensing and slope instability model according to claim 1, characterized in that: The preprocessing operation includes data cleaning and data fusion.

3. The method for selecting a transmission tower site based on remote sensing and slope instability model according to claim 1, characterized in that: The specific steps of building the remote sensing and slope instability model are as follows: S31, obtaining remote sensing data of the mountains in the target area collected by a satellite remote sensing system, and obtaining historical slope risk data corresponding to the mountains in the target area; S32, performing a preprocessing operation on the remote sensing data and the historical slope risk data of step S31 to obtain target remote sensing data and target historical slope risk data; S33, extracting characteristic data of the target remote sensing data, and associating the characteristic data of the target remote sensing data with the target historical slope risk data; S34, using the characteristic data of the target remote sensing data and the target historical slope risk data associated in step S33 as input data and output data of a preset training network, respectively, and training the preset training network to generate a remote sensing and slope instability model.

4. The method for selecting a transmission tower site based on remote sensing and slope instability model according to claim 1, characterized in that: The slope stability analysis of the target area mountain based on the slope risk data of the target area mountain includes a slope rainwater infiltration stability analysis, and the slope rainwater infiltration stability analysis includes a saturated slope rainwater infiltration analysis, an unsaturated slope rainwater infiltration analysis, and a saturated-unsaturated slope rainwater infiltration analysis.

5. The method for selecting a transmission tower site based on remote sensing and slope instability model according to claim 1, characterized in that: The adding of risk disturbances during the simulation operation includes adding regional disturbances under the influence of tower loads and regional disturbances under the influence of civil engineering projects.

6. A method for selecting a transmission tower site based on remote sensing and slope instability model according to claim 5, characterized in that: The regional disturbance under the influence of the tower load includes the wind load disturbance at the transmission tower head and the wind load disturbance at the transmission tower body.

7. The method for selecting a transmission tower site based on remote sensing and slope instability model according to claim 1, characterized in that: The selecting necessary distribution points from the preliminary necessary distribution points of the transmission towers in the target area based on the simulation test results includes: Based on the simulation test results, determine whether each preliminary necessary distribution point has a high regional risk, and select the preliminary necessary distribution points that do not have a high regional risk as necessary distribution points; The regional high risks include regional high risks under the influence of tower loads and regional high risks under the influence of civil engineering projects.

8. A transmission tower site selection system based on remote sensing and slope instability model, characterized in that: include: Data processing unit: used to obtain remote sensing data of the mountains in the target area through a satellite remote sensing system, perform preprocessing operations on the remote sensing data, and extract characteristic data of slope instability from the preprocessed remote sensing data; Data prediction unit: used to build remote sensing and slope instability models, and predict the slope risk data of the target area based on the characteristic data of slope instability; Distribution point determination unit: used to determine the slope instability risk value of the target area mountain according to the slope risk data of the target area mountain, obtain the site selection standard of the transmission tower, and determine the preliminary necessary distribution points of the transmission tower in the target area according to the slope instability risk value of the target area mountain and the site selection standard of the transmission tower; Simulation unit: used to establish the preliminary addresses of transmission towers according to the preliminary necessary distribution points of transmission towers in the target area, build a simulation model of the transmission tower for the preliminary addresses, simulate the simulation model of the transmission tower, and add risk disturbances during the simulation process to obtain simulation test results; Site selection unit: used to select necessary distribution points from the preliminary necessary distribution points of transmission towers in the target area according to the simulation test results, and establish the final address of the site selection of transmission towers in the target area through the necessary distribution points.

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