A method, device and computer storage medium for protecting a cut soil slope

Abstract

The application discloses a kind of cutting soil slope protection method, equipment and computer storage medium, it is related to slope protection technical field, including the parameter of slope according to soil body parameter, environmental parameter and first target safety factor calculation, including slope angle and slope height;According to the pre-embedded depth of the parameter obtained above and the calculation of the second target safety factor protection material, and according to the pre-embedded depth obtained in the slope corresponding depth protection pit is excavated;Configuration protection material, the anchoring position of protection material is calculated;Utilize the protection pit filled with the protection material of configuration completion, while using anchoring pile according to anchoring position to the protection material is fixed and so on step, the technical scheme proposed in the application can be improved and structure optimized according to the actual parameter of slope Material, solve the problem such as poor crack resistance, complex construction of traditional slope protection, also have engineering safety and ecological sustainability simultaneously.

Description

Technical Field

[0001] This invention relates to the field of slope protection technology, specifically to a method, equipment, and computer storage medium for protecting soil slopes in road cuts. Background Technology

[0002] Traditional road cut soil slope protection technology relies on using inorganic materials (such as cement, lime, and sand) to harden and reinforce the slope surface. However, this method has revealed several significant drawbacks in practical applications.

[0003] On the one hand, due to the sensitivity of inorganic materials to temperature changes and the natural creep of soil, the protective layer is prone to cracking, which in turn leads to the loss of protective effectiveness.

[0004] On the other hand, the hardened protective layer not only inhibits the natural growth of vegetation but also exacerbates soil erosion in the slope area. Especially when subjected to torrential rain or strong surface runoff, the protective layer is more prone to peeling off, seriously affecting its protective effect.

[0005] Furthermore, from a construction perspective, traditional techniques often require multiple layered pouring operations, which not only leads to low construction efficiency but also increases the risk of interlayer delamination, further affecting the integrity and stability of slope protection. Summary of the Invention

[0006] This invention provides a method, equipment, and computer storage medium for protecting soil slopes in road cuts. It can improve materials and optimize structures based on slope parameters, solving problems such as poor crack resistance and complex construction in traditional slope protection methods.

[0007] A method for protecting soil slopes in road cuts includes the following steps:

[0008] The slope parameters, including slope angle and slope height, are calculated based on soil parameters, environmental parameters, and the first target safety factor.

[0009] The pre-embedding depth of the protective material is calculated based on the parameters obtained above and the second target safety factor, and a protective pit of corresponding depth is excavated on the slope according to the obtained pre-embedding depth.

[0010] Configure protective materials and calculate the anchoring positions of the protective materials;

[0011] The prepared protective material is used to fill the protective pit, and anchor piles are used to fix the protective material according to the anchoring position.

[0012] Furthermore, the process of obtaining slope parameters involves acquiring soil parameters and environmental parameters based on the area where the slope construction is located. Among these, soil parameters include cohesion, internal friction angle, and unit weight; environmental parameters include rainfall intensity, seismic acceleration, and groundwater level.

[0013] Furthermore, the calculation process for the pre-embedded depth of the protective material includes:

[0014] A slope model was constructed using the parameters described above;

[0015] The parameters of the protective material are used to improve the soil layer on the slope surface through simulation until the safety factor of the slope is greater than or equal to the second target safety factor.

[0016] Based on the parameters of the above-mentioned protective materials, the filling depth of the protective materials on the slope is obtained, and the excavation depth of the protective pit is obtained.

[0017] Furthermore, the protective material includes a modified filler material, a mesh-like porous structure layer, and a plant layer, which are sequentially filled into the protective pit.

[0018] Furthermore, the modified filler material includes fiber-reinforced cementitious material, polymer-modified mortar, admixtures, and backfill soil, wherein, by weight percentage, the content of fiber-reinforced cementitious material is 0.5% to 1.5%, the content of polymer-modified mortar is 5% to 10%, and the content of admixtures is 2% to 5%.

[0019] Furthermore, the filler material is also uniformly mixed with slow-release fertilizer.

[0020] Furthermore, the mesh-like void structure layer is composed of several sub-mesh-like void structure plates assembled together, and the process of setting up the mesh-like void structure layer includes:

[0021] Several mesh-like porous structure panels are spliced ​​together and laid on the slope surface after it has been filled with protective material;

[0022] U-shaped ground nails are used to fix two adjacent sub-mesh void structure panels together.

[0023] Furthermore, the calculation process for the location distribution of anchor piles includes:

[0024] Determine the diameter of the anchor pile and the parameters of the filling material, where the filling material parameter is the strength of the filling material;

[0025] The single-pile anti-sliding force of the anchor pile is calculated based on the parameters of the soil and the parameters of the filling material.

[0026] The spacing of the anchor piles is calculated based on the second target safety factor.

[0027] A computer device includes a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the computer instructions to perform the method described above.

[0028] A computer-readable storage medium storing computer instructions for causing a computer to perform the above-described method.

[0029] The beneficial effects of the above-described technical solutions provided in the embodiments of the present invention include at least the following:

[0030] This invention, through material improvement and structural optimization, not only solves the problems of poor crack resistance and complex construction of traditional slope protection, but also has the advantages of engineering safety and ecological sustainability, and is applicable to slope engineering in highways, railways and mines.

[0031] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings.

[0032] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0033] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0034] Figure 1 This is a schematic flowchart of the method for protecting soil slopes in road cuts disclosed in an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of the slope protection structure disclosed in an embodiment of the present invention;

[0036] Figure 3 for Figure 2 A magnified structural diagram of point A in the middle.

[0037] Figure label:

[0038] 1. Slope; 11. Protective pit; 2. Modified filling material; 3. Anchor pile; 4. Vegetation structure layer; 41. Mesh void structure layer; 42. Plant layer. Detailed Implementation

[0039] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0040] Figure 1 A flowchart illustrating the method for protecting soil slopes in road cuts disclosed in an embodiment of the present invention is shown, including the following steps:

[0041] S1 is the parameter of slope 1, including slope angle and slope height, calculated based on soil parameters, environmental parameters and the first target safety factor.

[0042] Soil parameters include the following: cohesion c, internal friction angle φ, and unit weight γ.

[0043] Environmental parameters include the following: rainfall intensity I, seismic acceleration a max and groundwater level h w .

[0044] The first target safety factor is set according to construction requirements. In this embodiment, the first target safety factor F is set. S ≥1.1.

[0045] The formula for calculating the safety factor of slope 1 is (for the first target safety factor):

[0046]

[0047] In the formula,

[0048] α is the slope angle;

[0049] W i W represents the weight of the i-th soil block (kN / m). i =γ·A i (Weight of the i-th block, A) i (area of ​​the strip / block);

[0050] Δx i The horizontal width of the strip;

[0051] H is the slope height;

[0052] u i Pore ​​water pressure (kPa) (negligible if there is no groundwater). Where γ is the specific gravity of water, h w Here, k is the groundwater level and k is the permeability coefficient.

[0053] ΔL i Let the length of the smooth surface segment be (m).

[0054] c' and φ' are the improved soil parameters.

[0055] The steps for calculating the slope angle α and slope height H using the first target safety factor include:

[0056] S11. Input the original soil parameters: cohesion c, internal friction angle φ, and unit weight γ.

[0057] S12. Set the initial slope angle α0 and slope height H0;

[0058] S13. Calculate the safety factor F s ;

[0059] S14, if F S <1.1, adjust the slope angle α or slope height H, and repeat the iteration until the requirements are met;

[0060] S15. Output the slope angle α and slope height H that satisfy the first target safety factor.

[0061] S2, calculate the pre-embedded depth of the protective material based on the parameters obtained above and the second target safety factor, and excavate a protective pit 11 of the corresponding depth on the slope 1 according to the obtained pre-embedded depth.

[0062] S21, The calculation process for the pre-embedded depth of protective materials includes:

[0063] S22, using the above parameters, construct slope model 1;

[0064] S23, use the parameters of the protective material to improve the soil layer on the surface of slope 1 through simulation until the safety factor of slope 1 is greater than or equal to the second target safety factor.

[0065] S24. Based on the parameters of the above-mentioned protective materials, the filling depth of the protective materials on slope 1 is obtained, and the excavation depth of the protective pit 11 is obtained.

[0066] The aforementioned protective material includes a modified filling material 2, a mesh-like porous structure layer 41, and a plant layer 42, which are sequentially filled into the protective pit 11. The modified filling material 2 includes fiber-reinforced cement-based material, polymer-modified mortar, admixtures, and backfill soil. By weight percentage, the content of fiber-reinforced cement-based material is 0.5% to 1.5%, the content of polymer-modified mortar is 5% to 10%, and the content of admixtures is 2% to 5%.

[0067] The backfill soil is clay excavated during the excavation of the protective pit 11 on slope 1.

[0068] Modified filler material 2 is used to improve the cohesion c and internal friction angle φ of the soil in slope 1.

[0069] The above calculation process includes the following steps:

[0070] 1. Set soil parameters:

[0071] Undiscovered soil: cohesion c, internal friction angle φ, and unit weight γ;

[0072] Modified filler material 2: number of cohesive forces c', internal friction angle φ', and bulk density γ'.

[0073] 2. Geometric parameters: slope height H, slope angle α.

[0074] 3. Second target safety factor F S ≥1.3;

[0075] Divide slope 1 into two layers:

[0076] Surface layer: Modified filler material 2, depth d, parameters are c', φ', γ';

[0077] Bottom layer: Untouched soil layer of slope 1, with parameters c, φ and γ.

[0078] The formula for calculating the safety factor (for the second target safety factor) is as follows:

[0079]

[0080] c eff and φ eff Dynamically select based on block position:

[0081] If the strip is located on the surface (depth ≤ d): c eff =c',φ eff =φ',γ eff =γ';

[0082] If the block is located at the bottom layer (depth > d): c eff =c,φ eff =φ,γ eff =γ;

[0083] Adjust d using numerical methods (such as the bisection method) until F is reached. s当前 ≥Second target safety factor.

[0084] The steps to solve for d are as follows:

[0085] 1. Set the initial range d min =0,d max =H;

[0086] 2. Take the median value

[0087] 3. Calculate F s当前 ;

[0088] 4. If F s当前 <Second target safety factor, then let d min =d

[0089] If F s当前 If the second target safety factor is greater than or equal to the second target safety factor, then let d max =d;

[0090] 5. Repeat steps 2-4 until F. s当前 -Second target safety factor = ∈, where ∈ is the tolerance, such as ∈ = 0.01.

[0091] S3, Configure protective materials and calculate the anchoring positions of the protective materials.

[0092] The calculation process for the location distribution of anchor pile 3 includes:

[0093] S31, Determine the diameter of anchor pile 3 and the parameters of the filling material, where the filling material parameter is the strength of the filling material;

[0094] S32, calculate the single-pile anti-sliding force of anchor pile 3 based on the soil parameters and filling material parameters;

[0095] S33, calculate the spacing of anchor piles 3 based on the second target safety factor.

[0096] The distribution of anchor piles 3 is intended to enhance the stability of slope 1 and reduce sliding force. The calculation process includes:

[0097] Calculation of anti-sliding force of single pile: F p =πDL p ·c p +σ' n ·tanδ·A p

[0098] In the formula:

[0099] D is the diameter (m) of anchor pile 3;

[0100] L p The embedment depth of anchor pile 3 (m);

[0101] c p The pile-soil interface cohesion (kPa);

[0102] σ' n The effective stress on the pile side (kPa);

[0103] δ is the pile-soil friction angle;

[0104] A pThe surface area of ​​the pile side (m²) 2 ).

[0105] Pile spacing calculation:

[0106] In the formula:

[0107] F s The second target safety factor;

[0108] F p For single pile anti-sliding force;

[0109] S represents the spacing between anchor piles 3.

[0110] Using the spacing between anchor piles 3, an array of anchor piles 3 is constructed to cover the slope 1, and the position of each anchor pile 3 is output according to the array of anchor piles 3.

[0111] S4, fill the protective pit 11 with the prepared protective material, and fix the protective material with anchor piles 3 according to the anchoring position.

[0112] The mesh-like void structure layer 41 is composed of several sub-mesh-like void structure plates, and the process of setting up the mesh-like void structure layer 41 includes:

[0113] Several mesh-like porous structure panels are spliced ​​and laid on the surface of slope 1 after it has been filled with protective material;

[0114] U-shaped ground nails are used to fix two adjacent sub-mesh void structure panels together.

[0115] The aforementioned mesh-like porous structure layer 41 is used to fix the plant layer 42, wherein the plant layer 42 is combined with the mesh-like porous structure in the form of seeds, and the mesh-like porous structure stores and fixes the position of the seeds.

[0116] To further improve the seed survival rate and increase the coverage of the plant layer 42 on the slope 1, slow-release fertilizer is also uniformly mixed into the filling material. The slow-release fertilizer is used to slowly release the nutrients needed for seed growth, so as to maintain the long-term growth and survival of the seeds and avoid damage to the seeds. Coated urea, polymer-coated fertilizer, etc. can be used as slow-release fertilizer.

[0117] Fiber-reinforced cementitious materials can be made of polypropylene fibers or steel fibers, which serve to resist erosion and promote vegetation growth; polymer-modified mortars can be made of epoxy resin, which serves to reduce porosity; fine sand can be used as a dopant to enhance the density of the microstructure.

[0118] The above-mentioned fiber-reinforced cement-based material, polymer-modified mortar, admixtures, slow-release fertilizer and backfill soil are mixed to form modified filling material 2, which not only has good erosion resistance and vegetation growth promotion characteristics, but also effectively maintains the stability of slope 1 and achieves protection of slope 1.

[0119] A computer device includes a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the computer instructions to perform the method described above.

[0120] A computer-readable storage medium storing computer instructions for causing a computer to perform the above-described method.

[0121] It should be understood that the specific order or hierarchy of steps in the disclosed process is an example of an exemplary method. Based on design preferences, it should be understood that the specific order or hierarchy of steps in the process may be rearranged without departing from the scope of this disclosure. The appended method claims provide elements of various steps in an exemplary order and are not intended to limit the scope to the specific order or hierarchy described.

[0122] In the detailed description above, various features are combined together in a single embodiment to simplify this disclosure. This approach to disclosure should not be construed as reflecting an intention that embodiments of the claimed subject matter require more features than are explicitly stated in each claim. Rather, as reflected in the appended claims, the invention is presented with fewer features than all of the features in a single disclosed embodiment. Therefore, the appended claims are hereby explicitly incorporated into the detailed description, with each claim representing a separate preferred embodiment of the invention.

[0123] Those skilled in the art will also understand that the various illustrative logic blocks, modules, circuits, and algorithm steps described in conjunction with the embodiments herein can be implemented as electronic hardware, computer software, or a combination thereof. To clearly illustrate the interchangeability between hardware and software, the various illustrative components, blocks, modules, circuits, and steps described above are generally described in terms of their functionality. Whether such functionality is implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system. Those skilled in the art can implement the described functionality in alternative ways for each specific application; however, such implementation decisions should not be construed as departing from the scope of this disclosure.

[0124] The steps of the methods or algorithms described in conjunction with the embodiments herein can be directly embodied in hardware, software modules executed by a processor, or a combination thereof. The software modules can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium well known in the art. An exemplary storage medium is connected to the processor, enabling the processor to read information from and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and storage medium can reside in an ASIC. The ASIC can reside in a user terminal. Alternatively, the processor and storage medium can exist as discrete components in the user terminal.

[0125] For software implementation, the techniques described in this application can be implemented using modules (e.g., procedures, functions, etc.) that perform the functions described in this application. This software code can be stored in memory units and executed by a processor. The memory units can be implemented within the processor or outside the processor; in the latter case, they are communicatively coupled to the processor via various means, as is well known in the art.

[0126] The foregoing description includes examples of one or more embodiments. It is certainly impossible to describe all possible combinations of components or methods in order to describe the above embodiments, but those skilled in the art will recognize that the various embodiments can be further combined and arranged. Therefore, the embodiments described herein are intended to cover all such changes, modifications, and variations that fall within the scope of the appended claims. Furthermore, the term "comprising" as used in the specification or claims is interpreted in a manner similar to the term "including," as interpreted when used as a conjunction in the claims. Additionally, the use of any term "or" in the specification of the claims is intended to mean "non-exclusive or."

Claims

1. A method for protecting soil slopes in road cuts, characterized in that, The steps include the following: The slope parameters, including the slope angle, are calculated based on the original soil parameters, environmental parameters, and the first target safety factor. and slope height The original soil parameters and environmental parameters are obtained based on the area where the slope construction is located. The original soil parameters include cohesion. internal friction angle and density Environmental parameters include rainfall intensity, seismic acceleration, and groundwater level. The protective material comprises a modified filling material, a mesh-like porous structure layer, and a plant layer, sequentially filled into the protective pit. The modified filling material includes fiber-reinforced cementitious material, polymer-modified mortar, admixtures, and backfill soil. By weight percentage, the fiber-reinforced cementitious material content is 0.5%–1.5%, the polymer-modified mortar content is 5%–10%, and the admixture content is 2%–5%. Based on the parameters obtained above and the second target safety factor, the pre-embedding depth of the protective material is calculated. Then, a protective pit of corresponding depth is excavated on the slope according to the obtained pre-embedding depth. The calculation process for the pre-embedding depth of the protective material includes: dividing the slope into a surface layer and a bottom layer; the surface layer is based on a modified filling material and has a depth of... The soil layer, whose parameter is the improved cohesion. Improved internal friction angle and improved bulk density The bottom layer is the original soil layer of the slope, with the parameter being the original cohesion. internal friction angle and density ; Calculate the current safety factor of the slope based on dynamically selected parameters according to the location of the blocks: if the blocks are located at a depth less than or equal to The surface layer then selects the improved cohesion. Improved internal friction angle and improved bulk density Calculate; if the block is located at a depth greater than The bottom layer selects the original cohesion. internal friction angle and density Calculation; Adjustment via bisection method Until the current safety factor is greater than or equal to the second target safety factor. To obtain the depth that meets the conditions. The excavation depth of the protective pit; the second target safety factor F S ≥1.3; According to the obtained excavation depth, excavate a protective pit of the corresponding depth on the slope, and fill the protective pit with the prepared protective material. The anchorage locations are calculated, and anchor piles are used to fix the protective material according to these locations. The calculation process for the anchorage location distribution includes: determining the anchor pile diameter and filling material parameters, where the filling material parameter is the strength of the filling material; calculating the single pile anti-sliding force of the anchor pile based on the soil parameters and filling material parameters; the formula for calculating the single pile anti-sliding force is: In the formula: The diameter of the anchor pile; The embedment depth of the anchor pile; This refers to the cohesion at the pile-soil interface; This refers to the effective stress on the pile side; The pile-soil friction angle; This refers to the surface area of ​​the pile side; Based on the anti-sliding force of a single pile slope angle and slope height Calculate the spacing of the anchor piles. The calculation formula is as follows: .

2. The method as described in claim 1, characterized in that, The modified filler material is also uniformly mixed with slow-release fertilizer.

3. The method as described in claim 1, characterized in that, The mesh-like void structure layer is composed of several sub-mesh-like void structure plates. The process of setting up the mesh-like void structure layer includes: Several mesh-like porous structure panels are spliced ​​together and laid on the slope surface after it has been filled with protective material; U-shaped ground nails are used to fix two adjacent sub-mesh void structure panels together.

4. A computer device, characterized in that, include: A memory and a processor are communicatively connected, the memory stores computer instructions, and the processor executes the computer instructions to perform the method of any one of claims 1 to 3.

5. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing the computer to perform the method of any one of claims 1 to 3.

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