Different bedding dip angle rock sampling method suitable for deep geotechnical engineering

Abstract

The invention discloses a different-bedding-inclination-angle rock sampling method suitable for deep geotechnical engineering, relates to the field of deep rock field sampling, and solves the problems of high rock sampling difficulty and high transportation cost due to the fact that rocks are transported to a place outside a field for sampling in the prior art. The method has the beneficial effects that sampling can be performed in a roadway, the sampling efficiency is improved, the cost is controlled, and the labor intensity of workers is reduced, and according to the specific scheme, the method for sampling the rocks with the different bedding dip angles suitable for the deep geotechnical engineering comprises the following steps: determining a central point of a rock coring position according to the bedding angle of the rocks; according to the identification position, coring and cutting of the rock are facilitated, the whole rock does not need to be conveyed to the ground and then conveyed to a factory for processing, and sampling is rapid and convenient.

Description

Technical Field

[0001] This invention relates to the field of deep soil and rock sampling, and in particular to a method for sampling rocks with different bedding angles suitable for deep soil and rock engineering. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] With the continuous development of society and economy, deep geotechnical engineering projects such as underground tunnels and coal mines are constantly expanding into deeper areas. As the depth of these projects increases, the challenges encountered in deep geotechnical engineering become increasingly prominent, especially when the properties of the surrounding rock are unclear. Therefore, it is crucial to explore the mechanical parameters of the surrounding rock in deep geotechnical engineering projects, and the extraction of rock samples for indoor mechanical experiments is becoming increasingly common. However, sampling in deep geotechnical engineering is labor-intensive and inefficient. The current common sampling method involves first extracting the rock from underground and transporting it to the surface. If the surface lacks the necessary equipment, the rock needs to be transported to a factory for processing before being transported to the laboratory for testing. This method presents the following problems: The location of the rock is some distance from the factory, and the factory is also some distance from the laboratory. In actual work, a 500-pound rock is taken out from the ground, but the final rock sample may be less than 100 pounds. This undoubtedly greatly increases the workload and the difficulty of transportation. Transporting heavy raw rocks from the mine is also costly. Rocks have bedding, and rock samples must maintain the integrity of their bedding to ensure the accuracy of subsequent tests. However, the conditions in underground tunnels, especially the lack of lighting, limit the direct processing of rocks within the tunnels. In existing technologies, sampling is carried out outside the site, and freezing is used to ensure the integrity of the rock bedding, which further increases costs. Even if processing can be carried out directly in the tunnel, the large size of the rock and the uneven ground environment require workers to move the rock multiple times, which is quite labor-intensive. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a method for sampling rocks with different bedding angles suitable for deep geotechnical engineering, which enables direct sampling downhole.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: A method for sampling rocks with different bedding angles suitable for deep geotechnical engineering includes the following: The tunneling equipment tunnels at the working face to obtain rock that is separated from the rock mass; Infrared equipment is installed in the tunnel to locate the bedding angles of the rock. The core sampling location is determined based on the bedding angles of the identified rocks, and the center point of the core sampling location is marked. Core samples were taken from the rock at the marked locations. The cored rock was then cut to obtain standard samples.

[0006] As described above, a method for sampling rocks with different bedding angles suitable for deep geotechnical engineering can be used to find the bedding angles of the rock during the operation of the infrared equipment. The plane containing the bedding angles is then located, and a point on the rock end side of the plane containing the bedding angles is the center point of the core sampling location. After the plane containing the bedding angles is determined, the size of the rock is determined with the help of a ruler or tape measure, which helps the staff determine the number of samples that can be taken from the plane containing the bedding angles, and the staff then determines the core sampling location.

[0007] The above-described method for sampling rocks with different bedding angles in deep geotechnical engineering involves obtaining large rocks during the operation of the tunneling equipment, and then using a drilling rig to work on the large rocks to obtain the aforementioned rock.

[0008] As described above, a method for sampling rocks with different bedding angles suitable for deep geotechnical engineering includes an infrared device comprising a support base, a first rail on one side of the support base, allowing the rock to roll along the first rail to the support base, and at least one bracket on the periphery of the support base, each bracket supporting the infrared thermal imager, with the emitting end of the infrared thermal imager facing the support base. The support base has openings through which ropes are passed to secure the rock.

[0009] As described above, a method for sampling rocks with different bedding angles suitable for deep geotechnical engineering is provided. The height of the support is adjustable, and a card holder is provided at the top of the support. The card holder is rotatable relative to the support and has a slot. The infrared thermal imager is detachable relative to the slot, and the shape of the slot is adapted to the shape of the infrared thermal imager.

[0010] As described above, a method for sampling rocks with different bedding angles suitable for deep geotechnical engineering is provided, wherein a second rail is provided on the other side of the support base relative to the first rail, one side of the second rail is connected to the first worktable, and the first worktable is supported by multiple first support legs to level the first worktable. The first workbench is equipped with a hanging basket.

[0011] The above-described method for sampling rocks with different bedding angles in deep geotechnical engineering employs a core sampling machine to extract cores from the rocks according to the marked locations. The core sampling machine is detachably mounted on the surface of the first worktable.

[0012] As described above, a method for sampling rocks with different bedding angles suitable for deep geotechnical engineering is used to cut the cored rocks using a cutting machine, which is placed on the side of the first worktable away from the second track.

[0013] As described above, a method for sampling rocks with different bedding angles suitable for deep geotechnical engineering is described, wherein the cutting machine is detachably placed at the second workbench, which is located behind the first workbench. The second workbench is supported by multiple support legs to level it.

[0014] As described above, a method for sampling rocks with different bedding angles applicable to deep geotechnical engineering is provided, wherein a mobile vehicle is provided on the side of the second workbench to transport the obtained standard samples.

[0015] The beneficial effects of the present invention are as follows: 1) This invention uses tunneling equipment to excavate at the working face to obtain rock separated from the rock mass. In the dimly lit tunnel, the bedding angle of the rock can be quickly found using infrared equipment, and the center point of the core sampling location can be determined based on the bedding angle. The marked location facilitates core sampling and cutting of the rock. The whole process eliminates the need to transport the rock to the surface and then to the factory for processing. Sampling is fast and convenient, and the process is simple, which greatly reduces the transportation costs incurred in sampling and improves the speed and efficiency of sampling.

[0016] 2) In this invention, the plane where the rock bedding angle is located is determined according to the bedding angle of the rock. After the plane where the rock bedding angle is located is determined, the size of the rock is determined with the help of a ruler or tape measure, which helps to determine the number of samples that can be taken from the plane where the rock bedding angle is located. The staff determines the core sampling position. The whole process does not require freezing, and rocks with different bedding dip angles can be obtained.

[0017] 3) The infrared equipment in this invention has a reasonable structure. The support base is used to support the rock. A first rail is set on one side of the support base, which makes it easy for workers to roll the rock to the support base along the first rail, reducing the labor intensity of the workers. The height-adjustable bracket can meet the needs of rocks of different sizes. The card holder can rotate relative to the bracket to drive the rotation of the infrared thermal imager to meet the usage requirements. The card holder and the infrared thermal imager are detachable, which facilitates the disassembly of the infrared thermal imager and makes it easier to transport the equipment out of the well.

[0018] 4) In this invention, a second rail is set on the side of the support base away from the first rail. The worker can roll the rock to the first worktable along the second rail. The first worktable supports the rock core sampling machine, and the second worktable is used to support the cutting machine. The first support foot and the second support foot facilitate the adjustment of the flatness of the first worktable and the second worktable to ensure processing accuracy.

[0019] 5) In this invention, the support base of the infrared equipment, the first workbench and the second workbench are arranged and set up through the first rail and the second rail to form an assembly line operation, realizing the assembly line operation of marking, core taking and cutting of rocks, which facilitates the rapid movement of rocks between each work, ensures rapid operation in the well, and after the cutting is completed, these devices can be quickly disassembled and transported out of the well. Attached Figure Description

[0020] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0021] Figure 1 This is a flowchart of a method for sampling rocks with different bedding angles applicable to deep geotechnical engineering, according to one or more embodiments of the present invention.

[0022] Figure 2 This is a schematic diagram of the tunneling machine in a rock sampling method with different bedding angles applicable to deep geotechnical engineering, according to one or more embodiments of the present invention.

[0023] Figure 3 This is a schematic diagram of the drilling rig in a method for sampling rocks with different bedding angles applicable to deep geotechnical engineering, according to one or more embodiments of the present invention.

[0024] Figure 4 This is a plan view of the arrangement of various mechanisms in a rock sampling method with different bedding angles applicable to deep geotechnical engineering according to one or more embodiments of the present invention.

[0025] Figure 5 This is the present invention. Figure 4 Enlarged diagram of point A in the middle.

[0026] Figure 6 This is a schematic diagram of a mobile vehicle in a rock sampling method with different bedding angles applicable to deep geotechnical engineering, according to one or more embodiments of the present invention.

[0027] The diagram exaggerates the spacing or dimensions between parts to show their positions; the diagram is for illustrative purposes only.

[0028] The components are: 1. Tunnel roof; 2. Rock strata bedding plane; 3. Tunnel face; 4. Drilling rig; 5. Workers; 6. Tunnel floor; 7. Rock; 8. First rail; 9. Inclined reinforcing rib; 10. Support seat; 11. Outrigger; 12. Opening; 13. Mounting seat; 14. Tunneling machine; 15. Infrared equipment; 16. First rope; 17. Second rope; 18. Second rail; 19. Rock corer; 20. Long cylindrical rock; 21. Cutting machine; 22. First workbench; 23. Second workbench; 24. Mounting seat and outrigger; 25. Support frame; 26. Vehicle body; 27. Limiting frame. Detailed Implementation

[0029] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0030] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. As described in the background section, existing rock sampling methods are difficult and costly. To address these technical issues, this invention proposes a rock sampling method with different bedding angles suitable for deep geotechnical engineering.

[0031] In a typical embodiment of the present invention, reference is made to Figure 1 As shown, a method for sampling rocks with different bedding angles suitable for deep geotechnical engineering includes the following: Tunneling equipment such as tunneling machine 14 tunnels the surrounding rock of the roadway at the tunneling face 3 to obtain rock 7 separated from the rock mass; An infrared device 15 is installed in the tunnel to locate the bedding angle of the rock 7. The core sampling location was determined based on the bedding angles of rock 7, and the center point of the core sampling location was marked. Core samples were taken from rock 7 according to the marked locations. The cored rock was then cut to obtain standard samples.

[0032] It should be noted that the plane containing the bedding angle of the rock 7 is determined based on the bedding angle of the rock 7. A point on the end side of the rock containing the bedding angle is the center point of the rock core sampling location. During the operation of the infrared device 15, the bedding angle of the rock 7 can be found, and the plane containing the bedding angle can be further found. The staff determines the number of cores that can be extracted from the entire rock based on the plane containing the bedding angle, and uses a ruler or tape measure to determine the size of the rock, thereby determining the center point of the rock core sampling location. The staff 5 determines the core sampling location and marks it with an existing marker.

[0033] It is easy to understand that, reference Figure 2 As shown, the roadway includes the roadway roof 1, roadway floor 6, and working face 3. The rock strata bedding planes 2 are formed by geological structures and are located within the surrounding rock of deep coal mine roadways. During the operation of tunneling equipment such as the tunnel boring machine 14, to ensure the smooth implementation of rock sampling methods for different bedding angles in deep geotechnical engineering, the tunnel boring machine 14, such as existing cantilever tunnel boring machines, first obtains large rock blocks from the working face 3. (Refer to...) Figure 3 As shown, drilling rig 4 is used to drill large rock blocks to obtain rock 7. The diameter of the obtained rock 7 is usually between 48cm and 55cm.

[0034] refer to Figure 4 As shown, the infrared device 15 includes a support base 10. A first rail 8 is provided on one side of the support base 10. Under the action of external force, the rock can roll along the first rail 8 to the support base 10. At least one bracket 25 is provided on the periphery of the support base 10. Each bracket 25 supports the infrared thermal imager. The emitting end of the infrared thermal imager is set towards the support base 10. An oblique reinforcing rib 9 is provided on the side of the bracket 25. The bottom of the oblique reinforcing rib 9 is connected to the support base 10, and the top is connected to the bracket 25. Specifically, the support base 10 is a support plate, which is supported by multiple legs 11. The support plate has openings 12 through which ropes pass. After the rock is placed on the support base 10, it is fixed by the ropes. The first rope 16 is set in the X direction of the support base 10, and the second rope 17 is set in the Y direction of the support base 10. One end of the first rope 16 and the second rope 17 are fixed to the surface of the support base 10, and the other end passes through the corresponding opening and is fixed by knotting, rope fixing clips or other fixing methods. In this way, during the process of determining the core position, the cross arrangement of the first rope 16 and the second rope 17 ensures that the rock 7 is stably set at the support base 10, ensuring the stability of the rock 7 during the core determination process and ensuring the accuracy of the marking.

[0035] It is easy to understand that the bottom of the bracket 25 is detachably fixed to the support base 10 and can be tightened with bolts and nuts, facilitating the subsequent transportation of the bracket 25 out of the well. The height of the bracket 25 is adjustable. The bracket 25 specifically includes multiple support tubes, and adjacent support tubes can slide against each other. After adjustment, they can be locked with bolts. (See reference...) Figure 5 As shown, a card holder 13 is provided at the top of the bracket 25. The card holder 13 is rotatable relative to the bracket 25. A card holder leg 24 is provided at the bottom of the card holder 13. The card holder leg 24 is inserted into the support tube at the top and is rotatable relative to the support tube at the top. After rotation, it can be locked by bolts. In addition, the card holder 13 has a card slot, and the infrared thermal imager is detachable from the card slot. The shape of the card slot is adapted to the shape of the infrared thermal imager, so that the infrared thermal imager can be easily inserted into the card slot.

[0036] For processing within the tunnel, a second rail 18 is provided on the other side of the support base 10 relative to the first rail 8. One side of the second rail 18 is connected to the first workbench 22. The first workbench 22 has a first working surface and is supported by multiple first support legs to level the first workbench 22. The first workbench 22 is equipped with a hanging basket, which can be used to store tools such as markers, tape measures, or rulers.

[0037] In this embodiment, the first rail 8 and the second rail 18 have the same structure, specifically two rails. The two rails in the first rail 8 and the second rail 18 are set at intervals. The rails in the first rail 8 and the second rail 18 are supported by columns or multiple rollers or other structural components. The rollers facilitate the movement of the first rail 8 and the second rail 18. The columns are specifically fixed to the surface of the tunnel floor 6. The arrangement of the first rail 8 and the second rail 18 facilitates the movement of the rock 7 along the first rail 8 and the second rail 18. In other examples, the first rail 8 and the second rail 18 can be multiple rotating conveyor rollers to facilitate the movement of the rock 7.

[0038] It is understandable that the first rail 8 and the second rail 18 are detachably installed relative to the support base 10. Specifically, the support base 10 is provided with a connecting plate on its side, and the connecting plate is detachably connected to the first rail 8 and the second rail 18 by bolts. This makes it convenient to install the first rail 8 and the second rail 18 in the roadway, and it is also convenient to remove the first rail 8 and the second rail 18 after construction, so as to transport them out of the well.

[0039] In this embodiment, a rock core sampling machine 19 is used to extract cores from the rock according to the marked positions. The rock core sampling machine 19 is placed on the surface of the first worktable 22. The rock core sampling machine 19 can be an existing rock core sampling machine. The thin-walled drill used in the rock core sampling machine has a diameter of 50mm.

[0040] Specifically, the cored rock is cut using a cutting machine 21. After the long cylindrical rock 20 with a diameter of 50 mm is taken out, the long cylindrical rock 20 is cut into standard rock samples with a length of 100 mm using the cutting machine 21.

[0041] It is easy to understand that the cutting machine 21 is placed at the second workbench 23, which is located behind the first workbench 22. The second workbench 23 and the first workbench 22 can be spaced apart to avoid mutual interference. The second workbench 23 has a second working surface and is supported by multiple support legs to level the second workbench 23.

[0042] In some examples, to facilitate the movement of the rock, the support 10, the first worktable 22 and the second worktable 23 each include multiple conveying rollers. The conveying rollers are rotatable relative to the support 10, the first worktable 22 and the second worktable 23, thus facilitating the movement of the rock relative to the support 10, the first worktable 22 and the second worktable 23.

[0043] Furthermore, a horizontal bubble level is installed at the working surface corresponding to the first workbench 22 and the second workbench 23, and the anchor bolts are adjusted by the horizontal bubble level.

[0044] One easily understood aspect is that the support feet are existing anchor bolts.

[0045] In addition, a mobile vehicle is provided on the side of the second workbench 23 to transport the obtained standard samples. The mobile vehicle can be a portable rock sample transport box (patent number: CN202220834924.1), or other types of mobile vehicles can be used.

[0046] In some examples, refer to Figure 6 As shown, the mobile vehicle includes a vehicle body 26, which is equipped with multiple wheels. A limiting frame 27 is fixedly installed on the vehicle body. The limiting frame 27 has a set height, which is less than the height of the standard rock sample. After multiple standard rock samples are placed into the mobile vehicle, they are limited by the limiting frame 27. Multiple lifting rings are provided at the top of the limiting frame 27, which can be used to quickly lift the entire mobile vehicle, including the standard rock samples, out.

[0047] The sampling method provided in this embodiment involves tunneling equipment, such as a tunneling machine 14, excavating at the working face to obtain rock separated from the rock mass. In a dimly lit tunnel, the bedding angle of the rock can be quickly located using infrared equipment, and the center point of the core sampling location can be determined based on the bedding angle. The marked location facilitates core sampling and cutting of the rock 7. The entire process eliminates the need to transport the rock 7 to the surface and then to a factory for processing. Sampling is fast and convenient, and the process is simple, greatly reducing transportation costs and improving sampling speed and efficiency. Moreover, the remaining stones after sampling can be used for other purposes, unlike the prior art where the rocks are removed before sampling, resulting in the discarding of a large amount of rock 7 and wasting a significant amount of rock.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for sampling rocks with different bedding angles suitable for deep geotechnical engineering, characterized in that, The application relates to a method for obtaining a standard sample of rock. The method comprises the following steps: a tunneling device tunnels at a tunneling face to obtain rock separated from a rock mass; an infrared device is arranged in a roadway to find a bedding angle of the rock through the infrared device; a rock coring position is determined according to the found bedding angle of the rock, and a center point of the rock coring position is marked; 2. A method for sampling rock with different bedding inclination angles suitable for deep geotechnical engineering according to claim 1, characterized in that, the rock is cored according to the marked position, and the cored rock is cut to obtain a standard sample.

3. A method for sampling rock with different bedding inclination angles suitable for deep geotechnical engineering according to claim 1, characterized in that, During the working process of the infrared device, the bedding angle of the rock is found, and a plane where the bedding angle of the rock is located is further found; a point of the plane where the bedding angle of the rock is located at a rock end side is the center point of the rock coring position.

4. A method for sampling rock with different bedding inclination angles suitable for deep geotechnical engineering according to claim 1, characterized in that, During the working process of the tunneling device, a large rock is obtained, and a drilling machine is used to work on the large rock to obtain the rock. The infrared device comprises a support seat, a first rail is arranged on one side of the support seat, the rock can roll to the support seat along the first rail, at least one bracket is arranged on the periphery of the support seat, each bracket supports an infrared thermal imager, and an emission end of the infrared thermal imager faces the support seat; 5. A method for sampling rock with different bedding inclination angles suitable for deep geotechnical engineering according to claim 4, characterized in that, the support seat is provided with an opening, and a rope is arranged through the opening to fix the rock.

6. A method for sampling rock with different bedding inclination angles suitable for deep geotechnical engineering according to claim 4, characterized in that, The height of the bracket is adjustable, a clamping seat is arranged on the top of the bracket, the clamping seat is rotatable relative to the bracket, the clamping seat has a clamping groove, the infrared thermal imager is detachable relative to the clamping groove, and the shape of the clamping groove is matched with the shape of the infrared thermal imager. The support seat is provided with a second rail on the other side of the first rail, one side of the second rail is connected with a first workbench, the first workbench is supported by a plurality of first supporting legs to be leveled.

7. A method for sampling rock with different bedding inclination angles suitable for deep geotechnical engineering according to claim 6, characterized in that, The first workbench is provided with a hanging basket.

8. A method for sampling rock with different bedding inclination angles suitable for deep geotechnical engineering according to claim 7, characterized in that, A rock sample coring machine is detachably arranged on the surface of the first workbench to core the rock according to the marked position.

9. A method for sampling rock with different bedding inclination angles suitable for deep geotechnical engineering according to claim 8, characterized in that, A cutting machine is arranged on the other side of the first workbench away from the second rail to cut the cored rock.

10. A method for sampling rock with different bedding inclination angles suitable for deep geotechnical engineering according to claim 9, characterized in that, The cutting machine is detachably arranged on a second workbench, the second workbench is arranged on the rear side of the first workbench, and the second workbench is supported by a plurality of supporting legs to be leveled. A moving vehicle body is arranged on the side of the second workbench to transport the obtained standard sample.

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