Construction methods for mixing soil and rock materials

Abstract

This invention belongs to the field of geotechnical filling construction technology and discloses a method for mixing geotechnical materials. The method includes the following steps: separating and stockpiling various geotechnical materials; determining the single-batch mixing volume of each geotechnical material; using an excavator to load each geotechnical material into a dump truck bed according to its corresponding single-batch mixing volume; dumping the geotechnical materials from the dump truck bed onto the ground to form a first mixed pile; using an excavator to load the first mixed pile into the dump truck bed; dumping the geotechnical materials from the dump truck bed onto the ground to form a second mixed pile; determining whether the second mixed pile is uniformly mixed; if so, transporting the second mixed pile to the filling construction area; otherwise, repeating steps S3, S4, and S5. This method improves the uniformity of geotechnical material mixing and the efficiency of the mixing operation, reduces the cost of the mixing operation, and is not constrained by the construction site.

Description

Technical Field

[0001] This invention relates to the field of soil and rock filling construction technology, and in particular to a method for soil and rock material mixing construction. Background Technology

[0002] In earth-rock dams, river, lake, and sea dikes, and roadbed embankments, the compaction performance and deformation uniformity of the fill material directly affect the operational safety of the dam body, dike body, and embankment structure. Currently, in engineering construction, native soil and rock materials of different particle sizes, lithologies, and strengths are usually mixed in proportion to improve the physical and mechanical properties of individual soil and rock materials, optimize aggregate particle size distribution, and simultaneously realize the resource utilization of local material sources such as engineering debris, weathered rock, and hard crushed stone.

[0003] In existing technologies, the mixing of soil and rock materials is mainly divided into two methods: manual mixing and fixed mechanical mixing. Manual mixing relies mainly on human labor to complete the mixing of materials, which not only results in poor proportioning accuracy and difficulty in ensuring the uniformity of mixing, but also has the problem of low work efficiency. Although fixed mechanical mixing can effectively control the mixing ratio and improve the uniformity of the mixture, the equipment purchase and maintenance costs are high, and the requirements for construction site conditions are strict. It is only suitable for projects with excellent site conditions, thus limiting its application scope.

[0004] Therefore, there is an urgent need for a construction method that combines soil and rock materials to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a construction method for mixing soil and rock materials, which improves the uniformity of soil and rock material mixing and the efficiency of mixing operations, reduces the cost of mixing operations, and is not restricted by the construction site.

[0006] To achieve this objective, the present invention adopts the following technical solution: A method for constructing soil and rock material mixing is provided, comprising the following steps: S1. Different types of soil and rock materials are stored in separate areas within the stockpiling area; S2. Based on the preset mixing volume ratio, determine the single mixing volume of various rock and soil materials in the stockpiling area, and use an excavator to load the various rock and soil materials into the dump truck bed according to the corresponding single mixing volume. The dump truck bed can be tilted to unload. S3. Control the rotation of the dump truck's cargo compartment, mix the various rock and soil materials inside the dump truck's cargo compartment with each other and dump them onto the ground to form the first mixture pile on the ground; S4. Use an excavator to load the first mixture into the dump truck's cargo compartment; S5. Control the rotation of the dump truck's cargo box, mix the various rock and soil materials inside the dump truck's cargo box with each other and dump them onto the ground to form a second mixture pile on the ground; S6. Determine whether the various soil and rock materials in the second mixture pile are evenly mixed. If yes, transport the second mixture pile to the filling construction area. If not, repeat steps S3, S4 and S5 until the various soil and rock materials in the second mixture pile are evenly mixed.

[0007] Optionally, the volume of the excavator bucket is smaller than the volume of a single mixing, and the cross-sectional shape of the dump truck body is rectangular, with the dump truck body including a first filling diagonal and a second filling diagonal. In step S2, when using an excavator to fill a single type of rock and soil material, the material is filled alternately along the first filling diagonal extension direction and the second filling diagonal extension direction, and adjacent filling positions are arranged at intervals on the same diagonal.

[0008] Optionally, the first loading diagonal intersects the second loading diagonal; In step S2, when using an excavator to fill a single type of rock and soil material, the material is filled in a cyclical manner in the following order: one end of the first filling diagonal, the other end of the first filling diagonal, the intersection of the first filling diagonal and the second filling diagonal, one end of the second filling diagonal, the other end of the second filling diagonal, and the intersection of the first filling diagonal and the second filling diagonal.

[0009] Optionally, in step S1, each type of rock and soil material forms a single material pile, and there is a preset distance between two adjacent single material piles; in step S2, the excavator can pass between any two adjacent single material piles or pass and turn.

[0010] Optionally, in step S1, at least three single material piles are formed, and the multiple single material piles are arranged at circumferential intervals along the preset shape; in step S2, the excavator can pass between any two adjacent single material piles to the center of the preset shape. Alternatively, in step S1, two single material piles are formed; in step S2, the excavator can travel and turn between any two adjacent single material piles.

[0011] Optionally, after step S2 and before step S3, the following steps are also included: driving the dump truck to the mixing area; steps S3 to S5 are all performed in the mixing area.

[0012] Optionally, the excavator includes excavator one and excavator two, with excavator one located in the stockpiling area and excavator two located in the mixing area; in step S2, excavator one is used to grab the rock and soil material; in step S4, excavator two is used to grab the rock and soil material. Alternatively, after step S2 and before step S3, the following steps may be included: driving the excavator from the stockpiling area to the mixing area.

[0013] Optionally, in steps S2 and S4, the volume of soil and rock material loaded by the excavator each time is smaller than the volume of the excavator bucket.

[0014] Optionally, in steps S3 and S5, the dump truck's cargo box is controlled to rotate at a preset angle, which is within the range of 40° to 60°.

[0015] Optionally, step S6 specifically includes the following steps: S61. Extract multiple sets of test samples from the second mixture pile; S62. Check whether the various soil and rock materials in each group of test samples are mixed evenly. If so, transport the second mixture to the filling construction area. If not, proceed to step S63. S63. Repeat steps S3, S4, S5 and S61 until the various soil and rock materials in the extracted test sample are mixed evenly.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention provides a method for mixing soil and rock materials. In step S1, various soil and rock materials are stacked in separate sections, which effectively prevents mixing of different types of soil and rock materials before mixing. This not only facilitates subsequent handling by excavators but also ensures accurate mixing. In step S2, when the excavator loads the various soil and rock materials into the dump truck bed, the materials are initially mixed by layering and interleaving within the bed. The dump truck bed can be tilted to unload the materials. Then, in step S3, the rotating bed dumps the various soil and rock materials onto the ground, and during dumping, the materials tumble and roll. Secondary mixing; In step S4, the excavator bucket mixes the various soil and rock materials in the first mixed stockpile. As the materials are poured from the bucket into the truck bed, they tumble, allowing for further mixing during loading. In step S5, as the truck bed rotates, the soil and rock materials within it are further mixed through tumbling. In step S6, the uniformity of the mixing of the various soil and rock materials in the second mixed stockpile is assessed to ensure the final uniformity of the fill material, fully meeting engineering requirements. Through repeated loading and unloading, the various soil and rock materials are mixed multiple times, improving the uniformity of the mixture and fully meeting the needs of the filling project. Compared with existing technologies, the soil and rock material mixing construction method provided by this invention can achieve uniform mixing of soil and rock materials using only existing excavators and dump trucks on the construction site. It eliminates the need for other mixing machinery and specialized operators, significantly improving the efficiency of the mixing operation, reducing its cost and difficulty, and is not constrained by the construction site, thus expanding its applicability. Furthermore, soil and rock material loading, dumping, and transportation are all routine procedures in soil and rock filling construction; therefore, the soil and rock material mixing construction method of this invention will not require significantly additional construction time, contributing to improved overall efficiency of soil and rock filling construction. Attached Figure Description

[0017] Figure 1 The flowchart is a construction method for mixing soil and rock materials provided by the present invention; Figure 2 A schematic diagram showing step S2 of the soil and rock material mixing construction method provided by the present invention being performed using an excavator; Figure 3 A schematic diagram illustrating step S3 of the soil and rock material mixing construction method provided by the present invention when using a dump truck; Figure 4 This is a plan view of the carriage used in the soil and rock material mixing construction method provided by the present invention.

[0018] In the picture: 100. Excavator; 200. Dump truck; 210. Cargo box; 211. First filling diagonal; 212. Second filling diagonal; 300. First mixed material pile; 400. Single material pile. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0020] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0023] like Figures 1 to 4 As shown, this embodiment provides a construction method for mixing soil and rock materials, which improves the uniformity of soil and rock material mixing and the efficiency of mixing operations, reduces the cost of mixing operations, and is not restricted by the construction site.

[0024] The construction method for mixing soil and rock materials includes the following steps: S1. Different types of soil and rock materials are piled up in separate areas in the stockpiling area.

[0025] The soil and rock material mixing construction method provided in this embodiment, in step S1, involves stacking various soil and rock materials in separate areas, which can effectively prevent the mixing of various soil and rock materials before mixing. This not only facilitates the subsequent grabbing by the excavator 100, but also ensures accurate mixing in the later stage.

[0026] S2, see reference Figure 2 According to the preset mixing volume ratio, the single mixing volume of various rock and soil materials in the stockpile area is determined, and the excavator 100 is used to load the various rock and soil materials into the truck bed 210 of the dump truck 200 according to the corresponding single mixing volume. The truck bed 210 of the dump truck 200 can be tilted to unload materials.

[0027] In the soil and rock material mixing construction method provided in this embodiment, in step S2, when the excavator 100 loads various soil and rock materials into the dump truck 200 compartment 210, the various soil and rock materials can be initially mixed in the compartment 210 by layering and interleaving.

[0028] The preset mixing volume ratio is determined according to the specific construction conditions, and the single mixing volume is determined according to the preset mixing volume ratio and the volume of the carriage 210.

[0029] For example, when there are two types of soil and rock materials, the preset mixing volume ratio is set to 3:7, and the volume of the carriage 210 is set to 12m³. 3 It can be determined that the single mixing volume of the first type of soil and rock material is 3.6 m³. 3 The single-batch mixing volume of the second type of soil and rock material is 8.4 m³. 3 .

[0030] For example, the dump truck 200 is a tipper truck. Tipper trucks are commonly used transport vehicles on construction sites, and they can automatically tip and unload the cargo box 210 through hydraulic lifting.

[0031] S3, see reference Figure 3 The dump truck 200 is controlled to rotate its cargo box 210. Various rock and soil materials inside the dump truck 200 cargo box 210 are mixed together and dumped onto the ground to form a first mixed material pile 300 on the ground.

[0032] The soil and rock material mixing construction method provided in this embodiment allows the dump truck 200 to overturn and unload materials. In step S3, the rotating truck 210 can dump various soil and rock materials onto the ground, and at the same time, the various soil and rock materials are mixed a second time by tumbling.

[0033] S4. Use excavator 100 to load the first mixed material pile 300 into the dump truck 200's cargo box 210.

[0034] In the soil and rock material mixing construction method provided in this embodiment, in step S4, the bucket of the excavator 100 has a mixing effect on the various soil and rock materials in the first mixed stockpile. When the various soil and rock materials in the first mixed stockpile are poured from the bucket into the truck bed 210, they will also roll over, so that the various soil and rock materials can be mixed again when they are loaded from the ground into the truck bed 210.

[0035] S5. Control the rotation of the dump truck 200's cargo box 210, and mix the various rock and soil materials inside the dump truck 200's cargo box 210 with each other and dump them onto the ground to form a second mixed material pile on the ground.

[0036] The soil and rock material mixing construction method provided in this embodiment involves further mixing various soil and rock materials in the carriage 210 by tumbling during the rotating process in step S5. Through repeated loading and unloading, the various soil and rock materials are mixed multiple times, which helps to improve the uniformity of the soil and rock material mixture and can fully meet the needs of the filling project.

[0037] Compared with existing technologies, the soil and rock material mixing construction method provided in this embodiment can complete the uniform mixing of soil and rock materials using only the existing excavator 100 and dump truck 200 on the construction site. It eliminates the need for additional mixing machinery and specialized operators, significantly improving the efficiency of the mixing operation, reducing its cost and difficulty, and is not constrained by the construction site, thus expanding its applicability. Furthermore, soil and rock material loading, dumping, and transportation are all routine procedures in soil and rock filling construction; therefore, the soil and rock material mixing construction method in this embodiment will not require significantly additional construction time, contributing to improved overall efficiency of soil and rock filling construction.

[0038] For example, the soil and rock material mixing construction method provided in this embodiment can be applied to earth-rock dam projects in remote mountainous areas, river valleys, and other areas where it is not possible to build a fixed mixing plant.

[0039] S6. Determine whether the various soil and rock materials in the second mixture pile are evenly mixed. If yes, transport the second mixture pile to the filling construction area. If not, repeat steps S3, S4 and S5 until the various soil and rock materials in the second mixture pile are evenly mixed.

[0040] The soil and rock material mixing construction method provided in this embodiment, in step S6, judges the mixing uniformity of various soil and rock materials in the second mixed stockpile, which can further ensure the final uniformity of the filling material and fully meet the engineering requirements.

[0041] Among them, rock and soil materials include rock materials and soil materials. Rock materials refer to rock aggregates after mining, crushing and screening, which are hard coarse aggregates. Soil materials refer to natural soil or treated filling soil. Both can be used in dam bodies, roadbeds, backfilling and other projects.

[0042] Optionally, see Figure 2 In step S1, each type of rock and soil material forms a single material pile 400, and there is a preset distance between two adjacent single material piles 400; in step S2, the excavator 100 can pass between any two adjacent single material piles 400 or pass and turn.

[0043] The excavator 100 needs to rotate to load the soil and rock material onto the dump truck 200. By arranging the two single material piles 400 alternately, the excavator 100 can load the material by standing between the two single material piles 400, reducing the distance the excavator 100 travels and saving travel time. Furthermore, when the excavator 100 is standing between the two single material piles 400, its rotation is not restricted. As a result, the excavator 100 can serve at least two single material piles 400 at the same time, which significantly improves the efficiency of the excavator 100 in loading soil and rock material.

[0044] For example, the preset distance is determined according to the specific construction situation, as long as it allows the excavator 100 to pass between any two adjacent single material piles 400 or to pass and turn.

[0045] In this embodiment, in step S1, at least three single material piles 400 are formed, and the multiple single material piles 400 are arranged at circumferential intervals along the preset pattern; in step S2, the excavator 100 can travel from any two adjacent single material piles 400 to the center of the preset pattern.

[0046] This operation allows the excavator 100 to simply travel from the outside of the preset shape to its center in step S2. Furthermore, during loading, the excavator 100 does not need to travel; it can load various types of soil and rock materials simply by rotating. This significantly reduces the travel time of the excavator 100 and improves its efficiency in loading soil and rock materials. Moreover, the excavator 100's central position ensures that when operating on each individual material pile 400, the excavator 100 rotates at the same angle each time, significantly reducing the operator's workload and further enhancing its efficiency in loading soil and rock materials.

[0047] Since the excavator 100 performs slewing operations at the center of the preset graphic, the preset distance between two adjacent single material piles 400 does not need to be set too large, as long as the excavator 100 can pass between any two adjacent single material piles 400.

[0048] For example, when there are three single material piles 400, the preset shape is preferably an equilateral triangle, and the excavator 100 rotates 120° each time; when there are four single material piles 400, the preset shape is preferably a square, and the excavator 100 rotates 90° each time; when there are n single material piles 400, the preset shape is preferably a regular n-sided polygon, and the excavator 100 rotates 360° / n each time. Here, n is a positive integer greater than 4.

[0049] In other embodiments, in step S1, two single material piles 400 are formed; in step S2, the excavator 100 can travel and turn between any two adjacent single material piles 400.

[0050] When the excavator 100 is located between two single material piles 400, the excavator 100 can turn to one side to serve the single material pile 400 on the corresponding side, and turn to the other side to serve the single material pile 400 on the other side, which significantly improves the convenience and efficiency of the excavator 100 in loading soil and rock materials.

[0051] Optionally, see Figure 2 and Figure 4 The volume of the bucket of the excavator 100 is smaller than the volume of a single mixing. The cross-sectional shape of the dump truck 200's cargo box 210 is rectangular. The cargo box 210 of the dump truck 200 includes a first filling diagonal 211 and a second filling diagonal 212. In step S2, when the excavator 100 fills a single type of rock and soil material, it alternately fills along the extension direction of the first filling diagonal 211 and the extension direction of the second filling diagonal 212, and on the same diagonal, the positions of two adjacent filling operations are arranged at intervals.

[0052] The excavator's 100-ton bucket has a volume smaller than the volume required for a single batch of mixing, necessitating multiple loading stages for a single type of soil or rock material. By alternately loading the single type of soil or rock material into the truck bed 210 along the first loading diagonal 211 and the second loading diagonal 212, the material is naturally distributed throughout the truck bed 210, achieving complete coverage. The staggered loading positions along each diagonal provide ample space for material dispersion, effectively preventing accumulation within the truck bed 210. This operation ensures even distribution of the single type of soil or rock material within the truck bed 210, facilitating subsequent mixing with other soil or rock materials and improving the efficiency of mixing multiple soil or rock materials. Moreover, when various soil and rock materials are filled according to the above steps, they will be stacked in the carriage 210, forming a layered composite material body in the carriage 210. Then, when step S3 is executed, the layered composite material body can be automatically mixed.

[0053] In this embodiment, the first filling diagonal 211 intersects with the second filling diagonal 212. In step S2, when the excavator 100 fills a single type of rock and soil material, it cyclically fills the material in the following order: one end of the first filling diagonal 211, the other end of the first filling diagonal 211, the intersection of the first filling diagonal 211 and the second filling diagonal 212, one end of the second filling diagonal 212, the other end of the second filling diagonal 212, and the intersection of the first filling diagonal 211 and the second filling diagonal 212.

[0054] This operation ensures that the distance between two adjacent filling positions is equal when filling along the first filling diagonal 211 and the second filling diagonal 212. This not only avoids the accumulation of soil and rock materials, but also helps to improve the uniformity of the distribution of soil and rock materials in the carriage 210, thus ensuring the efficiency of subsequent mixing of various soil and rock materials.

[0055] Specifically, there are several types of soil and rock materials. The first type of soil and rock material needs to be filled in seven times, while the second type needs to be filled in three times. The filling process for the first type of soil and rock material is as follows: the excavator 100 is controlled to load the first type of soil and rock material into the truck bed 210 in the following order: one end of the first filling diagonal 211, the other end of the first filling diagonal 211, the intersection of the first filling diagonal 211 and the second filling diagonal 212, one end of the second filling diagonal 212, the other end of the second filling diagonal 212, the intersection of the first filling diagonal 211 and the second filling diagonal 212, and one end of the first filling diagonal 211. Each time, the excavator 100 digs out one-seventh of the single mixing volume of the first type of soil and rock material. The filling process of the second type of rock and soil material is as follows: the excavator 100 is controlled to load the second type of rock and soil material into the truck bed 210 in three batches in the order of one end of the first filling diagonal 211, the other end of the first filling diagonal 211, and the intersection of the first filling diagonal 211 and the second filling diagonal 212. Each time, the excavator 100 digs out one-third of the single mixing volume of the second type of rock and soil material.

[0056] Optionally, after step S2 and before step S3, the following steps are also included: driving the dump truck 200 to the mixing area; steps S3 to S5 are all performed in the mixing area.

[0057] This operation ensures that neither the first mixed material pile 300 nor the second mixed material pile will be mixed with the single material pile 400, which not only facilitates the subsequent grabbing by the excavator 100, but also ensures the accuracy of the mixing, fully meeting the needs of the filling project.

[0058] In this embodiment, the excavator 100 includes excavator one and excavator two. Excavator one is located in the material stockpiling area, and excavator two is located in the mixing area. In step S2, excavator one is used to grab the rock and soil material. In step S4, excavator two is used to grab the rock and soil material.

[0059] This operation can shorten the travel time of excavator one and excavator two, and significantly improve the efficiency of the mixing and construction.

[0060] In other embodiments, the step S2 followed by the step S3 includes the following step: driving the excavator 100 from the stockpiling area to the mixing area.

[0061] This operation means that only one excavator (100) is needed at the entire mixing construction site, reducing the cost of mixing construction.

[0062] Optionally, in steps S2 and S4, the volume of soil and rock material loaded by the excavator 100 each time is less than the volume of the excavator 100 bucket.

[0063] This operation ensures that the bucket is never fully loaded, preventing the center of gravity of the soil and rock material from shifting within the bucket, improving the stability of the bucket's operation, and helping to ensure the accuracy of the material taken out by the bucket. Moreover, when the bucket is not fully loaded, the soil and rock material can slide out of the bucket in a tumbling manner, which has a tumbling effect, allowing various soil and rock materials to be further mixed in this process, improving the uniformity of the mixture.

[0064] For example, the volume of soil and rock material loaded by the excavator 100 each time is less than 80% of the bucket capacity of the excavator 100.

[0065] Optionally, in steps S3 and S5, the dump truck 200's cargo box 210 is controlled to rotate by a preset angle, which is within the range of 40° to 60°.

[0066] This operation allows various types of soil and rock materials inside the carriage 210 to be smoothly dumped out by tumbling, without segregation between them. This effectively avoids the phenomenon of local concentration of fine materials and loose coarse materials, ensuring the final uniformity of the filling material.

[0067] Optionally, step S6 specifically includes the following steps: S61. Extract multiple sets of test samples from the second mixture pile.

[0068] Taking multiple sets of test samples can offset random errors in testing and sampling, thereby comprehensively reflecting the overall quality of the second mixture pile and improving the accuracy of test results and the rigor of judgment.

[0069] For example, three sets of test samples are selected from the top of the second mixture pile, three sets of test samples are selected from the middle of the second mixture pile, and three sets of test samples are selected from the bottom of the second mixture pile, with each set of samples weighing no less than 50 kg. This selection ensures that the subsequent test results can comprehensively reflect the overall quality of the second mixture pile.

[0070] S62. Check whether the various soil and rock materials in each group of test samples are mixed evenly. If so, transport the second mixture to the filling construction area. If not, proceed to step S63.

[0071] In this embodiment, the testing methods for each group of test samples include sieve analysis and lithological identification tests. The coefficient of variation of the mass percentage of soil and rock materials in each group of test samples can be obtained through the tests. It is determined whether the coefficient of variation is less than 10%. If it is, it indicates that the various soil and rock materials in the group of test samples are mixed evenly. If not, it indicates that the mixing evenness of the various soil and rock materials in the group of test samples does not meet the filling requirements.

[0072] Among them, the sieve analysis test, lithological identification test and the method for calculating the coefficient of variation are all existing technologies in this field, and will not be described in detail here.

[0073] In this embodiment, after all test samples have passed the test, the second mixture stockpile is loaded onto the transport vehicle using an excavator 100; then, the transport vehicle is driven to the filling construction area.

[0074] For example, the filling construction area includes, but is not limited to, the dam face of the earth-rock dam and the filling operation surface.

[0075] S63. Repeat steps S3, S4, S5 and S61 until the various soil and rock materials in the extracted test sample are mixed evenly.

[0076] For example, if there are two types of soil and rock materials to be mixed, and the particle size difference between the two types of soil and rock materials is less than 30%, then in step S63, steps S3, S4 and S5 can be repeated once to make the filler material evenly mixed; if there are three types of soil and rock materials to be mixed, and the particle size difference between the three types of soil and rock materials is greater than 30%, then in step S63, steps S3, S4 and S5 can be repeated at least twice to make the filler material evenly mixed.

[0077] Example 1 The filler material used in this embodiment is for the core wall of an earth-rock dam and is composed of clay and sandstone. The preset volume ratio of clay to sandstone is 3:7, and the particle size difference between clay and sandstone is less than 30%.

[0078] In this embodiment, the mixing process of the filling material includes the following steps: S1. Clay and sandstone are piled in the stockpiling area in separate sections. The height of a single clay stockpile (400mm) is controlled within 3m, and the height of a single sandstone stockpile (400mm) is controlled within 4m. The preset distance between two single stockpiles (400mm) is 6m. S21. Based on the preset mixing volume ratio and the volume of the dump truck's 200-ton bed (210 cubic meters), the single mixing volume of clay is determined to be 3.6 m³. 3The single-stage mixing volume of sandstone is 8.4 m³. 3 ; S22. Using excavator 100, clay is filled into truck bed 210 in three stages, with each stage involving approximately 1.2m³ of excavated material. 3 The first excavated clay is filled to one end of the first filling diagonal 211, the second excavated clay is filled to the other end of the first filling diagonal 211, and the third excavated clay is filled to the intersection of the first filling diagonal 211 and the second filling diagonal 212. The excavator 100 is controlled to load the sandstone into the truck bed 210 in seven batches in the following order: one end of the first filling diagonal 211, the other end of the first filling diagonal 211, the intersection of the first filling diagonal 211 and the second filling diagonal 212, one end of the second filling diagonal 212, the other end of the second filling diagonal 212, the intersection of the first filling diagonal 211 and the second filling diagonal 212, and one end of the first filling diagonal 211. Each batch of excavated clay is approximately 1.2 m³. 3 ; S23, drive both dump truck 200 and excavator 100 to the mixed area; S3. Control the dump truck 200 to rotate its cargo box 210 to 50°. The clay and sandstone inside the dump truck 200 cargo box 210 are mixed together and dumped onto the ground of the mixing area to form the first mixed material pile 300. S4. Use excavator 100 to load the first mixed material pile 300 into the dump truck 200's cargo box 210; S5. Control the dump truck 200 to rotate its cargo box 210 to 50°. The clay and sandstone inside the dump truck 200 cargo box 210 are mixed together and dumped onto the ground of the mixing area to form a second mixed material pile. S6. Determine whether the clay and sandstone in the second mixture pile are evenly mixed. If yes, transport the second mixture pile to the filling construction area. If not, repeat steps S3, S4 and S5 until the various soil and rock materials in the second mixture pile are evenly mixed.

[0079] Example 2 The filler material used in this embodiment is a transition material for the dam shell of an earth-rock dam, and it consists of limestone, sandstone, and mudstone. The preset volume ratio of limestone, sandstone, and mudstone is 5:3:2, and the particle size of the three rock materials differs significantly.

[0080] In this embodiment, the mixing process of the filling material includes the following steps: S1. Limestone, sandstone and mudstone are piled in the stockpiling area in separate sections. The preset shape formed by the single stockpiles of the three types of rock and soil materials is an equilateral triangle. S21. Determine the single mixing volume of limestone, sandstone and mudstone based on the preset mixing volume ratio and the volume of the dump truck 200 and the cargo box 210. S22. Drive the excavator 100 to the center of the equilateral triangle, and use the excavator 100 to load limestone, sandstone and mudstone into the truck bed 210 in multiple batches. The various rock and soil materials are loaded in a cyclical manner according to the following order: one end of the first loading diagonal 211, the other end of the first loading diagonal 211, the intersection of the first loading diagonal 211 and the second loading diagonal 212, one end of the second loading diagonal 212, the other end of the second loading diagonal 212, and the intersection of the first loading diagonal 211 and the second loading diagonal 212. S23, drive both dump truck 200 and excavator 100 to the mixed area; S3. Control the dump truck 200 to rotate its cargo box 210 to 45°. The limestone, sandstone and mudstone in the dump truck 200 cargo box 210 are mixed together and dumped onto the ground of the mixing area to form the first mixed material pile 300. S4. Use excavator 100 to load the first mixed material pile 300 into the dump truck 200's cargo box 210; S5. Control the dump truck 200 to rotate its cargo box 210 to 45°. The limestone, sandstone and mudstone in the dump truck 200 cargo box 210 are mixed together and dumped onto the ground of the mixing area to form a second mixed material pile. S6. Determine whether the limestone, sandstone and mudstone in the second mixture pile are evenly mixed; if so, transport the second mixture pile to the filling construction area; if not, repeat steps S3, S4 and S5 until the various rock and soil materials in the second mixture pile are evenly mixed.

[0081] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A construction method for mixing soil and rock materials, characterized in that, Includes the following steps: S1. Different types of soil and rock materials are stored in separate areas within the stockpiling area; S2. Based on the preset mixing volume ratio, determine the single mixing volume of various rock and soil materials in the stockpiling area, and use an excavator (100) to load various rock and soil materials into the truck bed (210) of the dump truck (200) according to the corresponding single mixing volume. The truck bed (210) of the dump truck (200) can be tilted to unload materials. S3. Control the rotation of the dump truck (200) carriage (210), and mix the various rock and soil materials in the dump truck (200) carriage (210) and dump them onto the ground to form a first mixed material pile (300) on the ground. S4. Using the excavator (100), the first mixture pile (300) is loaded into the cargo compartment (210) of the dump truck (200); S5. Control the rotation of the cargo box (210) of the dump truck (200), and mix the various rock and soil materials in the cargo box (210) of the dump truck (200) with each other and dump them onto the ground to form a second mixture pile on the ground; S6. Determine whether the various soil and rock materials in the second mixture pile are evenly mixed; if yes, transport the second mixture pile to the filling construction area; if no, repeat steps S3, S4 and S5 until the various soil and rock materials in the second mixture pile are evenly mixed.

2. The construction method for mixing soil and rock materials according to claim 1, characterized in that, The volume of the excavator (100) bucket is smaller than the single mixing volume, and the cross-sectional shape of the dump truck (200) cargo box (210) is rectangular. The cargo box (210) of the dump truck (200) includes a first filling diagonal (211) and a second filling diagonal (212). In step S2, when the excavator (100) fills a single type of rock and soil material, it alternately fills along the extension direction of the first filling diagonal (211) and the extension direction of the second filling diagonal (212), and on the same diagonal, the adjacent filling positions are arranged at intervals.

3. The construction method for mixing soil and rock materials according to claim 2, characterized in that, The first loading diagonal (211) intersects with the second loading diagonal (212); In step S2, when the excavator (100) fills a single type of rock and soil material, it fills the material in a cyclical manner according to the following sequence: one end of the first filling diagonal (211), the other end of the first filling diagonal (211), the intersection of the first filling diagonal (211) and the second filling diagonal (212), one end of the second filling diagonal (212), the other end of the second filling diagonal (212), and the intersection of the first filling diagonal (211) and the second filling diagonal (212).

4. The construction method for mixing soil and rock materials according to claim 1, characterized in that, In step S1, each type of rock and soil material forms a single material pile (400), and there is a preset distance between two adjacent single material piles (400); in step S2, the excavator (100) can pass between any two adjacent single material piles (400) or pass and turn.

5. The construction method for mixing soil and rock materials according to claim 4, characterized in that, In step S1, at least three single material piles (400) are formed, and the multiple single material piles (400) are arranged at circumferential intervals along a preset pattern; in step S2, the excavator (100) can travel from any two adjacent single material piles (400) to the center of the preset pattern. Alternatively, in step S1, two single material piles (400) are formed; in step S2, the excavator (100) can travel and turn between any two adjacent single material piles (400).

6. The construction method for mixing soil and rock materials according to claim 1, characterized in that, The steps following step S2 and before step S3 include: driving the dump truck (200) to the mixing area; steps S3 to S5 are all performed in the mixing area.

7. The construction method for mixing soil and rock materials according to claim 6, characterized in that, The excavator (100) includes excavator one and excavator two, excavator one being located in the stockpiling area and excavator two being located in the mixing area; in step S2, excavator one is used to grab rock and soil material; in step S4, excavator two is used to grab rock and soil material. Alternatively, after step S2 and before step S3, the following steps may be included: driving the excavator (100) from the stockpiling area to the mixing area.

8. The method for construction of soil and rock material admixture according to any one of claims 1-7, characterized in that, In steps S2 and S4, the volume of soil and rock material loaded by the excavator (100) each time is less than the volume of the bucket of the excavator (100).

9. The method for constructing soil and rock material admixtures according to any one of claims 1-7, characterized in that, In steps S3 and S5, the cargo box (210) of the dump truck (200) is controlled to rotate by a preset angle, which is in the range of 40° to 60°.

10. The construction method for mixing soil and rock materials according to any one of claims 1-7, characterized in that, Step S6 specifically includes the following steps: S61. Extract multiple sets of test samples from the second mixture pile; S62. Check whether the various soil and rock materials in each group of test samples are mixed evenly. If so, transport the second mixture to the filling construction area. If not, proceed to step S63. S63. Repeat steps S3, S4, S5 and S61 until the various soil and rock materials in the extracted test sample are mixed evenly.

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