Portable intelligent slope type identification method and device integrating slope-grading-water content sampling and measuring

Abstract

The invention relates to the technical field of slope safety monitoring, and discloses a portable intelligent slope type identification method and device integrating slope-grading-water content sampling and measuration.The portable intelligent slope type identification device comprises a slope measuring unit, a data processing unit and a data processing unit, one end of the moisture content measuring unit is connected with the gradient measuring unit, the other end of the moisture content measuring unit is provided with a filtering cavity, and water absorption filter paper is arranged in the filtering cavity; the soil screening unit comprises a screening box, one end of the screening box is detachably connected with the cavity end of the moisture content measuring unit, and the other end of the screening box is detachably connected with a cover body. Key parameter acquisition equipment is integrated in the slope type distinguishing device, the slope type distinguishing device has the advantages of being multifunctional, low in cost, portable, small and exquisite and easy to operate, and slope types can be rapidly and effectively distinguished by collecting the three parameters of slope, grading and water content.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of slope safety monitoring, in particular to a portable intelligent slope type recognition method and device integrating slope grade, gradation and water content. BACKGROUND

[0002] China's mountain and hilly areas are widely distributed, and the surface and near-surface rock-soil bodies of various engineering slopes and natural slopes are mostly weathered layers and residual soils with complex properties and strong structural properties. Such soil bodies have a certain structural strength in a dry state, but are prone to softening and disintegration under the action of external forces such as rainfall and earthquakes, thereby inducing landslides, collapses and other geological disasters, which pose a continuous threat to people's lives and property and the safety of major infrastructure.

[0003] Currently, the on-site rapid evaluation technology for slope stability is still lagging behind. On the one hand, the traditional geological survey method has a long cycle and high cost, which is difficult to meet the timeliness requirements of engineering construction and emergency response. On the other hand, the existing portable devices on the market often have highly single functions, or can only measure the slope or can only roughly judge the soil properties, and cannot simultaneously and integrally obtain the three key parameters of "slope grade, soil gradation and initial water content" for judging the slope type and stability. This leads to fragmented on-site evaluation data, making it difficult to form effective decision support. The deeper problem is that these devices and their operation processes generally lack "intelligence": data recording relies on manual work, formats are not standardized, and results are difficult to digitize and export, making valuable on-site data unable to seamlessly access subsequent BIM (Building Information Modeling), digital twin and big data intelligent analysis platforms, becoming an "information island" for building a "smart slope" management system.

[0004] Therefore, breaking the bottleneck of on-site data collection and developing a portable device and method that can integrate multi-parameter rapid collection and natively support digital output has become a "last mile" problem for promoting the application of intelligent construction technology in the field of geotechnical engineering. Such a device is not only a tool innovation, but also should be positioned as a front-end intelligent sensing terminal of the intelligent construction data chain. The standardized and structured data generated by the device will provide a solid foundation for the digital survey, intelligent design and smart operation of slope engineering, thereby realizing the transformation of the disaster prevention mode from passive response to active early warning. SUMMARY

[0005] Therefore, it is necessary to provide a portable intelligent slope type recognition device and method to overcome the defect that the existing devices cannot quickly recognize the slope type and stability on site.

[0006] A portable intelligent slope type recognition device integrating slope grade, gradation and water content measurement, comprising: a slope determination unit for determining the slope of the slope; a water content determination unit, one end of which is connected to the slope determination unit, and the other end of which is provided with a filter cavity, and a water-absorbing filter paper is arranged in the filter cavity; a soil screening unit, which comprises a screening box, one end of which is detachably connected to the cavity end of the water content determination unit, and the other end of which is detachably connected to a cover.

[0007] As a preferred embodiment of the portable intelligent slope type discrimination device, the slope determination unit comprises a shell, which is provided with a first length scale, and a cylindrical cavity is arranged in the shell, the cylindrical cavity is filled with liquid, and an angle scale is arranged at one end of the cylindrical cavity.

[0008] As a preferred embodiment of the portable intelligent slope type discrimination device, the liquid is filled to one half of the volume of the cylindrical cavity.

[0009] As a preferred embodiment of the portable intelligent slope type discrimination device, the angle scale is arranged at one end of the cylindrical cavity, and the range of the angle scale is 0-90°.

[0010] As a preferred embodiment of the portable intelligent slope type discrimination device, a first length scale is arranged on the inner side of the filter cavity of the water content determination unit, and the water-absorbing filter paper is arranged at the bottom of the filter cavity, and at least 6 layers of the water-absorbing filter paper are arranged.

[0011] As a preferred embodiment of the portable intelligent slope type discrimination device, a second length scale is arranged on the inner side of the screening box, and a screen is arranged in the screening box.

[0012] As a preferred embodiment of the portable intelligent slope type discrimination device, a plurality of screening boxes are detachably connected in sequence, and the pore sizes of the screens in the plurality of screening boxes decrease in sequence.

[0013] A discrimination method is provided, which is realized by using the portable intelligent slope type discrimination device, and the discrimination method comprises the following steps: selecting a point on the slope as a determination point; vertically placing the slope determination unit at the determination point, and obtaining the slope of the determination point by using the angle scale; taking the soil at the determination point to the water content determination unit, observing the number of layers of the water-absorbing filter paper after pressing, and obtaining the initial water content and the repose angle of the slope at the determination point according to the water content calculation formula and the repose angle calculation formula; taking the soil at the determination point to the soil screening unit, and obtaining the particle content in each particle size range after screening; The slope type is determined according to the slope gradient, the soil moisture content and the volume proportion of the granular soil.

[0014] As a preferred embodiment of the discrimination method, the moisture content calculation formula is as follows y1=3.50+7x1 (Formula 1); Wherein, y1 is the initial moisture content; x1 is the number of layers of the soil through the filter paper.

[0015] As a preferred embodiment of the discrimination method, the repose angle calculation formula is as follows y2=37.06+0.38y1 (Formula 2); Wherein, y2 is the repose angle; y1 is the initial moisture content.

[0016] Advantages of the present application: The key parameter acquisition device is integrated in the slope type discrimination device, which has the advantages of multifunction, low cost, portability, small size and simple operation, and the three parameters of "gradient, gradation and moisture content" can be collected to quickly and effectively discriminate the slope type. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 The structure diagram of the slope type discrimination device in the embodiments of the present application is shown in the figure; Figure 2 The structure diagram of the slope determination unit in the embodiments of the present application is shown in the figure; Figure 3 The structure diagram of the slope determination unit in the embodiments of the present application is shown in the figure; Figure 4 The structure diagram of the moisture content determination unit in the embodiments of the present application is shown in the figure; Figure 5 The structure diagram of the soil screening unit in the embodiments of the present application is shown in the figure; Figure 6 The structure diagram of the cover in the embodiments of the present application is shown in the figure; Figure 7 The number of layers of the soil through the filter paper after the soil is pressed and the change curve of the initial moisture content in the embodiments of the present application are shown in the figure; Figure 8Fig. 1 is a schematic diagram of the angle of repose of the sandy clay soil at different water contents in the embodiments of the present application.

[0019] Explanation of reference signs: 1000, slope determination unit; 2000, water content determination unit; 3000, soil screening unit; 4000, cover. DETAILED DESCRIPTION

[0020] In order to make the above objectives, characteristics and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to provide a comprehensive understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0021] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0022] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0023] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] In this application, unless otherwise explicitly specified and limited, a first feature is "on" or "under" a second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature is "over", "above" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in horizontal height than the second feature. The first feature is "under", "below" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in horizontal height than the second feature.

[0025] It should be noted that when an element is referred to as being "fixed to" or "set to" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an intermediate element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.

[0026] According to one aspect of the present application, embodiments of the present application provide a portable intelligent slope type discrimination device, which is described in conjunction with Figures 1 to 8 The portable intelligent slope type discrimination device includes a slope determination unit 1000, a water content determination unit 2000 and a soil sieving unit 3000. The slope determination unit 1000 is used to determine the slope of the slope. One end of the water content determination unit 2000 is connected to the slope determination unit 1000, and the other end is provided with a filter cavity. A water-absorbing filter paper is arranged in the filter cavity. The soil sieving unit 3000 includes a sieve box. One end of the sieve box is detachably connected to the cavity end of the water content determination unit 2000, and the other end is detachably connected with a cover body 4000.

[0027] Please refer to Figure 1 The portable intelligent slope type discrimination device has a hollow cylindrical structure as a whole. The slope determination unit 1000, the water content determination unit 2000, the soil sieving unit 3000 and the cover body 4000 are connected in sequence, and are used to determine the slope, the water content and the gradation of the slope.

[0028] In one embodiment, please refer to Figure 2 and Figure 3 The slope determination unit 1000 includes a shell. A cylindrical cavity is arranged inside the shell, and the cylindrical cavity is filled with a liquid.

[0029] The shell is disc-shaped, one end of which is connected with the water content measuring unit 2000, and the circular end of the cylindrical cavity is provided with an angle scale, which is arranged around the center of the circular end. The cylindrical cavity is filled with liquid to facilitate the determination of the slope gradient.

[0030] In one embodiment, the liquid fills two-thirds of the volume of the cylindrical cavity, and the angle scale is located at one end inside the cylindrical cavity, with a range of 0-90°.

[0031] The angle scale is arranged inside the cylindrical cavity to avoid wear during use, with a range of 0-90°, evenly arranged around the center of the circular end.

[0032] In one embodiment, referring to Figure 4 , the outside of the water content measuring unit 2000 is designed with a first length scale, and the water-absorbing filter paper is arranged at the bottom of the filter cavity, which is provided with at least 6 layers.

[0033] The water-absorbing filter paper at the bottom of the filter cavity of the water content measuring unit 2000 is used to determine how many layers of water-absorbing filter paper the water in the soil can penetrate, so as to calculate the water content in the soil by the water content calculation formula. The first length scale is used to determine the height of the soil placed in the water content measuring unit 2000.

[0034] In one embodiment, referring to Figure 5 , the outside of the sieve box is provided with a second length scale, and the inside is provided with a sieve.

[0035] The second length scale is used to determine the height of the remaining soil in the sieve box after sieving.

[0036] In one embodiment, a plurality of sieve boxes are detachably connected in sequence, and the pore sizes of the sieves in the plurality of sieve boxes decrease in sequence.

[0037] The sieve box includes two, the pore size of the sieve in the upper sieve box is 2mm, and the pore size of the sieve in the lower sieve box is 0.5mm.

[0038] The bottom of the lowermost sieve box is detachably connected with a cover 4000, referring to Figure 6 , so as to clean the residual soil after sieving through the lowermost sieve box.

[0039] A distinguishing method, which is realized by using a portable intelligent distinguishing slope type device, includes the following steps: Step one: select a flat place on the slope as a measuring point.

[0040] Step two: keep the slope determination unit 1000 level, and make the liquid surface in the cylindrical cavity pass the 0 scale line when the liquid is static, at this time, draw a dark line at the 90° scale line (i.e. the line where the slope determination unit 1000 contacts the ground) to mark the horizontal plane, and use the mark to contact the slope surface whose slope needs to be measured during use, and read the scale on the liquid surface after the liquid is static, which is the slope of the slope surface.

[0041] Step three: take the soil at the determination point in the water content determination unit 2000, cover a piece of filter paper on the soil sample, press manually for 5 to 10 seconds, take out all the filter paper, observe the number of water permeable filter paper layers, and then calculate the initial water content of the slope body according to formula 1.

[0042] y1=3.50+7x1 (Formula 1); wherein y1 is the initial water content; x1 is the number of water permeable filter paper layers in the soil.

[0043] The number of water permeable filter paper layers after pressing and the initial water content change curve can be referred to Figure 7 .

[0044] The rest angle of the slope body is calculated according to formula 2.

[0045] y2=37.06+0.38y1 (Formula 2); wherein y2 is the rest angle; y1 is the initial water content.

[0046] The rest angle change curve of sandy clay soil with different water contents can be referred to Figure 8 .

[0047] Step four: take the soil at the determination point in the water content determination unit 2000, shake gently to make the soil flat, read the first length scale line marked on the inner wall of the water content determination unit 2000 at this time, mark the scale as the total volume V, connect the sieve boxes in the order from large to small according to the aperture of the sieve, then connect the large-aperture sieve box with the water content determination unit 2000 and the small-aperture sieve box with the cover 4000, shake the combination of the water content determination unit 2000 and the soil sieving unit 3000, make the soil surface in the sieve box level after sieving, read the height of the soil with a particle size of 0.5-2 mm and the soil below 0.5 mm according to the second length scale line and the third length scale line marked on the inner wall of the sieve box, mark them as V2 and V3 respectively, and the volume of the soil with a particle size greater than 2 mm is V1=V-V2-V3, thereby calculating the particle content in each particle size range.

[0048] Step five: combine the slope gradient, soil water content, and particle soil volume ratio, and refer to Table 1 and Table 2 to determine the type of the slope.

[0049] Table 1 Slope classification table according to slope - gradation

[0050] Table 2 Slope classification table according to slope - gradation - initial moisture content

[0051] Each technical feature in the above-described embodiments can be combined arbitrarily, and for the sake of brevity, each technical feature in the above-described embodiments is not described in all possible combinations, but it should be understood that any combination of technical features is within the scope of the present disclosure as long as the combination does not cause a contradiction.

[0052] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be noted that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these are within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A portable intelligent slope type identification device integrating slope-gradation-moisture content sampling, characterized in that, include: A slope measuring unit, wherein the slope measuring unit is used to measure the slope of a slope; A moisture content measuring unit, one end of which is connected to a slope measuring unit, and the other end of which is provided with a filter chamber, wherein absorbent filter paper is provided inside the filter chamber; A soil sieving unit, comprising a sieve box, one end of which is detachably connected to the cavity end of a moisture content measuring unit, and the other end of which is detachably connected to a cover.

2. The portable intelligent slope type identification device according to claim 1, characterized in that, The slope measuring unit includes a housing, inside which is a cylindrical cavity filled with liquid, and at one end of the cylindrical cavity is an angle scale.

3. The portable intelligent slope type identification device according to claim 2, characterized in that, The liquid fills half the volume of the cylindrical cavity.

4. The portable intelligent slope type identification device according to claim 2, characterized in that, The angle scale is located at one end inside the cylindrical cavity, and its marking range is 0-90°.

5. The portable intelligent slope type identification device according to claim 1, characterized in that, The inner side of the filter chamber of the moisture content measuring unit is provided with a first length scale line, and the absorbent filter paper is provided at the bottom of the filter chamber, with at least 6 layers.

6. The portable intelligent slope type identification device according to claim 1, characterized in that, The inner side of the sieve box is provided with a second length scale line and a third length scale line, and a sieve mesh is provided inside it.

7. The portable intelligent slope type identification device according to claim 6, characterized in that, The plurality of screen boxes are detachably connected in sequence, and the aperture of the screen mesh in the plurality of screen boxes decreases in sequence.

8. A method for identification, characterized in that, This identification method utilizes a portable intelligent slope type identification device, and the method includes the following steps: Select a point on the slope as the measurement point; The slope measuring unit is placed vertically at the measuring point, and the slope of the measuring point is obtained through the angle scale. Take soil samples from the measurement point into the moisture content measurement unit, press them down, and observe the number of water-permeable layers of the absorbent filter paper. Based on the moisture content calculation formula and the angle of repose calculation formula, the initial moisture content and angle of repose of the slope at that location are obtained. Soil samples were taken from the test points and sieved in the soil sieving unit to obtain the particle content for each particle size range. The type of slope is determined by combining the slope gradient, soil moisture content, and the proportion of granular soil volume.

9. The identification method according to claim 8, characterized in that, The formula for calculating the moisture content is as follows: y1=3.50+7x1 (Formula 1); Where y1 is the initial moisture content; x1 represents the number of layers of filter paper through which water permeates the soil.

10. The identification method according to claim 8, characterized in that, The formula for calculating the angle of repose is as follows: y2=37.06+0.38y1 (Formula 2); Where y2 is the angle of rest; y1 is the initial moisture content.

11. An intelligent recognition method, characterized in that, By scanning the QR code on the side of the slope measurement unit, and inputting the number of water-permeable layers of the absorbent filter paper, the slope gradient, and the percentage of particles in each particle size range, the type of the measured slope can be directly determined.

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