A low-disturbance steep structural plane test body rapid processing method

Abstract

This invention discloses a rapid processing method for steeply inclined structural test specimens with low disturbance, belonging to the field of geotechnical testing technology. The method includes the following steps: Step 100, trimming the rock mass on the upper side of the target structural surface; Step 200, marking lines; Step 300, removing the lower rock mass and installing the lower constraint; Step 400, removing the left and right rock masses and installing the left and right constraint components; Step 500, removing the upper rock mass; Step 600, cutting the constraint components. During the removal of the lower, left, right, and upper rock masses of the steeply inclined structural test specimen, timely application of the specimen constraint components to create new constraints significantly reduces disturbance to the structural test specimen during processing, ensuring the accuracy and effectiveness of the structural surface strength test parameters. This, in turn, ensures that the engineering test parameters reflect actual working conditions, providing support for subsequent engineering design based on test parameters and exploration of rock mechanics theory.

Description

Technical Field

[0001] This invention relates to a rapid processing method for a low-disturbance, steeply inclined structural test specimen, belonging to the field of geotechnical testing technology. Background Technology

[0002] Structural planes are geological interfaces with specific shapes and characteristics formed by various geological processes within a rock mass. They are an important component of the rock mass and have a significant impact on its physical and mechanical properties. The existence of structural planes has a wide and profound influence on underground engineering, potentially compromising the integrity, stability, and impermeability of the rock mass. If structural plane parameters do not reflect the actual conditions, it can easily lead to engineering instability or increased investment. Therefore, controlling the acquisition process of structural plane parameters is of paramount importance.

[0003] Currently, in-situ direct shear testing of structural surfaces is one of the most important methods for obtaining strength parameters of structural surfaces that reflect actual conditions. According to relevant research and regulations concerning structural surface testing both domestically and internationally, such as the "Standard for Engineering Rock Mass Testing Methods" (GB / T50266-2013), the "Code for Rock Mass Testing in Hydropower Engineering" (DL / T 5368-2024), and "The ISRM Suggested Methods for Rock Characterization, Testing and Monitoring: 2007-2014," direct shear testing of structural surface strength is involved. However, only some of these standards or articles mention the need to pay attention to the disturbance of the test specimen during processing, but they do not propose specific solutions to reduce the disturbance during specimen processing.

[0004] Traditional methods for processing structural test specimens are based on those for processing rock mass direct shear specimens. These methods are relatively crude. When the structural surface is nearly horizontal or gently dipping, the disturbance to the processed results is still within a controllable range. However, when the structural surface is steeply dipping, the previous processing methods no longer meet the requirements, and new processing methods need to be sought.

[0005] Currently, the Yarlung Tsangpo River downstream hydropower project has commenced. Located in the Himalayas, formed by the collision and uplift of the Indian and Eurasian plates, this region contains numerous steeply dipping structural surfaces. Significant disturbance during the fabrication of these structural test specimens can directly distort experimental results, preventing the final structural strength parameters from effectively reflecting the actual conditions and impacting the scientific validity and rationality of subsequent engineering designs. Furthermore, if the fabrication process of numerous structural test specimens is subject to substantial disturbance, the rock mechanics theory derived from experimental parameters will be affected. Therefore, minimizing disturbances to the structural test specimens during fabrication is of paramount importance. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a low-disturbance steep-tilt structural test specimen processing method. This method ensures rapid and streamlined processing of the structural test specimen while minimizing disturbance to the steep-tilt structural test specimen during processing. This supports the accuracy and effectiveness of structural surface strength test parameters, ensuring that engineering test parameters reflect actual conditions and providing a guarantee for the scientific and rational design of subsequent engineering projects.

[0007] This invention is achieved through the following technical solution:

[0008] A method for fabricating a low-disturbance, steeply tilted structural interview body includes the following steps:

[0009] Step 100: Rock mass trimming on the hanging wall of the target structure: Trim the rock mass on the hanging wall of the target structure to the required thickness to obtain the rock mass reserved for the test specimen;

[0010] Step 200, Marking: Mark the positions of multiple structural test specimens, the preliminary rock mass removal area, and the original rock support on the slope surface of the reserved rock mass. The preliminary rock mass removal area is located on the underside of all structural test specimens and is connected to all structural test specimens. The original rock support is located within the preliminary rock mass removal area and is connected to one of the structural test specimens.

[0011] Step 300: Removal of lower rock mass and installation of lower end restraints: Remove the rock mass located above the target structural surface in the preliminary removal area along the slope normal of the reserved rock mass of the specimen, and install the specimen restraints on the lower plate of the target structural surface to form restraints on the lower end of all structural specimens along the slope.

[0012] Step 400: Removal of left and right side rock mass and installation of left and right side constraint components: Remove the rock mass on the left and right sides of each structural test specimen located above the target structural surface along the slope normal of the reserved rock mass of the test specimen, and install the test specimen constraint components on the lower plate of the target structural surface to form constraints on the left and right sides of each structural test specimen respectively.

[0013] Step 500: Remove the upper rock mass: Remove the rock mass on the upper side of each structural test specimen along the slope normal of the reserved rock mass of the test specimen, so that each structural test specimen is separated from the original rock.

[0014] Step 600, Constraint Cutting: Install the template and pour concrete on the slope of each structural test specimen. After the concrete has cured, before testing the structural test specimen, cut all test specimen constraints around the target structural test specimen along the target structural surface.

[0015] In step 100, the thickness of the rock mass on the hanging wall of the target structure after modification is 30cm ± 2cm.

[0016] Step 200 specifically includes the following steps:

[0017] Step 201: Determine the size and number of structural test specimens, as well as the spacing between them;

[0018] Step 202: Draw lines on the slope of the reserved rock mass of the test specimen to mark the positions of all structural test specimens, and the lower edges of all structural test specimens are collinear;

[0019] Step 203: Draw lines on the slope of the reserved rock mass of the test specimen to mark the location of the preliminary rock mass removal area, and make the upper edge of the preliminary rock mass removal area collinear with the lower edge of the structural test specimen;

[0020] Step 204: Draw lines within the initial rock mass removal area to mark the position of the original rock support, ensuring that the upper edge of the original rock support is collinear with the lower edge of the structural specimen, and that the lower edge is collinear with the lower edge of the initial rock mass removal area. Align the original rock support with the middle structural specimen among all structural specimens.

[0021] The number of the structural interview subjects is odd.

[0022] Step 300 specifically includes the following steps:

[0023] Step 301: Remove the rock mass located above the target structure surface in the preliminary excision area of ​​the rock mass, excluding the original rock support, along the slope normal of the reserved rock mass of the test specimen.

[0024] Step 302: Install test body constraint components on the lower plate of the target structural surface inside the initial rock mass removal area, and form constraints on the middle position of the lower end of all other structural test bodies along the slope, except for the structural test body directly opposite the original rock support.

[0025] Step 303: Remove the rock mass located above the target structure surface at the original rock support along the slope normal of the reserved rock mass of the test specimen.

[0026] Step 304: Install the test specimen constraint on the lower plate of the target structure to constrain the middle position of the lower end of the test specimen along the slope of the structure directly opposite the original rock support.

[0027] In steps 100, 300, 400 and 500, the rock mass is broken up layer by layer by manual means using a cutting machine, electric pick, steel wedge and sledgehammer.

[0028] In step 400, the test body constraint member used to constrain the left or right side of the structural test body is arranged near the upper edge of the structural test body.

[0029] The test specimen constraint is a steel bar, which is arranged along the normal direction of the target structural surface. One end of the bar is inserted into the lower plate of the target structural surface, and the other end extends to the upper part of the target structural surface to constrain the test specimen.

[0030] The length of the test specimen constraint located within the lower plate of the target structural surface shall not be less than 20 cm, and the length located on the upper side of the target structural surface shall not be less than 1 / 3 of the thickness of the test specimen.

[0031] In step 600, an angle grinder is used to cut all the test specimen constraints around the test specimen at the pre-shear surface of the target structural surface.

[0032] The beneficial effects of this invention are as follows:

[0033] 1. During the process of removing the rock mass on the lower, left, right and upper sides of the steeply inclined structural test specimen, timely use of specimen constraint members to form new constraints on the structural test specimen can significantly reduce the disturbance of the structural test specimen during the processing, ensure the accuracy and effectiveness of the structural surface strength test parameters, and thus ensure that the engineering test parameters can reflect the actual working conditions, providing support for subsequent engineering design based on test parameters and exploration of rock mechanics theory.

[0034] 2. First, the original rock support is retained to support the rock mass above the initial rock mass removal area. Next, the middle position of the lower slope of all structural test objects except the one directly opposite the original rock support is constrained by the test object constraint. Then, the rock mass above the target structural surface at the original rock support is removed. Finally, the lower slope of the structural test object directly opposite the original rock support is constrained by the test object constraint. This ensures the continuity and reliability of the constraint on the lower slope of the rock mass above the initial rock mass removal area during the removal of the rock mass inside the initial rock mass removal area, and greatly reduces the disturbance to the rock mass above the initial rock mass during the removal process.

[0035] 3. The rock mass was broken up layer by layer using tools such as cutting machines, electric picks, steel wedges and sledgehammers, which reduced the disturbance to the structural rock mass while ensuring the processing speed of the structural rock mass. Attached Figure Description

[0036] Figure 1 This is a diagram showing the relative positions of the tunnel axis, the upper plate of the target structure, the lower plate of the target structure, and the target structure itself, according to the present invention.

[0037] Figure 2 This is a right view of the rock mass reserved for the specimen when step 100 of the present invention is completed;

[0038] Figure 3 This is a schematic diagram of the structure when step 200 of the present invention is completed;

[0039] Figure 4 This is a schematic diagram of the structure when step 301 of the present invention is completed;

[0040] Figure 5 This is a schematic diagram of the structure when step 302 of the present invention is completed;

[0041] Figure 6 This is a schematic diagram of the structure when step 303 of the present invention is completed;

[0042] Figure 7 This is a schematic diagram of the structure when step 304 of the present invention is completed;

[0043] Figure 8 This is a structural diagram of the present invention when step 400 is completed;

[0044] Figure 9 This is a schematic diagram of the structure when step 500 of the present invention is completed.

[0045] In the figure: 1-tunnel axis, 2-upper plate of target structure, 3-lower plate of target structure, 4-target structure, 5-rock mass reserved for test specimen, 6-test specimen restraint, 7-test specimen, 9-preliminary rock mass removal area, 10-original rock support. Detailed Implementation

[0046] The technical solution of the present invention is further described below, but the scope of protection is not limited to what is described.

[0047] Example 1:

[0048] like Figures 1 to 9 As shown, the present invention provides a method for processing a low-disturbance steeply tilted structural interview body, comprising the following steps:

[0049] Step 100: Rock mass trimming of hanging wall 2 on the target structure surface: Trim the rock mass of hanging wall 2 on the target structure surface to the required thickness to obtain the reserved rock mass 5 for the specimen, such as... Figure 2 As shown. The target structural surface hanging wall 2, after being delivered by the construction unit, is theoretically required to retain only the required thickness of rock mass. However, in actual operation, it is difficult to control the rock mass thickness of the target structural surface hanging wall 2 to be exactly the required thickness. Therefore, the rock mass thickness of the target structural surface hanging wall 2 is generally greater than the required thickness. So, it is necessary to first trim the rock mass of the target structural surface hanging wall 2 to the required thickness.

[0050] Step 200: Marking lines: Mark the positions of multiple structural test specimens 7, the preliminary rock removal area 9, and the original rock support 10 on the slope surface of the reserved rock mass 5. The preliminary rock removal area 9 is located below all structural test specimens 7 and connects with all structural test specimens 7. The original rock support 10 is located within the preliminary rock removal area 9 and connects with one of the structural test specimens 7. Figure 3 As shown.

[0051] Step 300: Removal of lower rock mass and installation of lower end restraint: Remove the rock mass located on the upper side of the target structural surface 4 within the preliminary rock mass removal area 9 along the slope normal of the reserved rock mass 5 of the test specimen, and install the test specimen restraint 6 on the lower plate 3 of the target structural surface to form a restraint on the lower end of all structural test specimens 7 along the slope.

[0052] Step 400: Removal of left and right side rock mass and installation of left and right side constraint members: Remove the rock mass on the left and right sides of each structural test specimen 7 located on the upper side of the target structural surface 4 along the slope normal of the reserved rock mass 5 of the specimen, and install the specimen constraint members 6 on the lower plate 3 of the target structural surface to form constraints on the left and right sides of each structural test specimen 7, such as... Figure 8 As shown.

[0053] Step 500: Upper Rock Mass Removal: Remove the rock mass on the upper side of each structural test specimen 7 along the slope normal of the reserved rock mass 5, so that each structural test specimen 7 is separated from the original rock, such as... Figure 9 As shown. Figure 8 and Figure 9 As shown, by first constraining the left and right sides of each structural test specimen 7 with the test specimen constraint 6, and then removing the rock mass on the upper side of each structural test specimen 7, the disturbance caused to the structural test specimen 7 during the rock mass removal process can be reduced.

[0054] Step 600, Constraint Cutting: Install the template and pour concrete on the slope of each structural test specimen 7. After the concrete has cured, before conducting the test on the structural test specimen 7, cut all the test specimen constraints 6 around the structural test specimen 7 along the target structural surface 4. Pouring concrete on the slope of the structural test specimen 7 facilitates using the upper surface of the structural test specimen 7 as a reference surface during the in-situ direct shear test on the structural surface.

[0055] During the removal of the rock mass on the lower, left, right and upper sides of the steeply inclined structural test specimen 7, the timely application of the specimen constraint 6 to form new constraints on the structural test specimen 7 can significantly reduce the disturbance to the structural test specimen 7 during the processing, ensuring the accuracy and effectiveness of the structural surface strength test parameters. This, in turn, ensures that the engineering test parameters can reflect the actual situation, providing a guarantee for the subsequent rock mechanics theory system formed based on the test parameters.

[0056] In step 100, the rock thickness of the upper hanging wall 2 of the target structural surface after trimming is 30cm ± 2cm. During construction, if the rock mass of the upper hanging wall 2 of the target structural surface is too thick, holes are first drilled using an electric pick, then steel wedges are inserted into the holes, and then the steel wedges are repeatedly struck with a sledgehammer to break up the thicker part of the rock. The rock mass of the upper hanging wall 2 of the target structural surface is trimmed manually using tools. This method ensures the processing speed of the structural surface 7 while reducing the disturbance to the structural surface 7 during the trimming process.

[0057] Step 200 specifically includes the following steps:

[0058] Step 201: Determine the dimensions and quantity of structural interview elements 7, and the spacing between structural interview elements 7;

[0059] Step 202: Draw lines on the slope of the reserved rock mass 5 of the test specimen to mark the positions of all structural test specimens 7, and the lower edges of all structural test specimens 7 are collinear;

[0060] Step 203: Draw lines on the slope of the reserved rock mass 5 of the test specimen to mark the position of the preliminary rock mass removal area 9, and make the upper edge of the preliminary rock mass removal area 9 collinear with the lower edge of the structural test specimen 7.

[0061] Step 204: Mark the position of the original rock support 10 within the preliminary rock mass removal area 9, ensuring that the upper edge of the original rock support 10 is collinear with the lower edge of the structural specimen 7, and the lower edge is collinear with the lower edge of the preliminary rock mass removal area 9. Align the original rock support 10 with the middle structural specimen 7 among all structural specimens 7. Figure 3 As shown.

[0062] The number of the structured interview subjects 7 is an odd number.

[0063] Step 300 specifically includes the following steps:

[0064] Step 301: Remove the rock mass within the preliminary excavation area 9 of the pre-reserved rock mass 5 along the slope normal, excluding the original rock support 10, and located on the upper side of the target structural surface 4, such as... Figure 4 As shown. When the dimensions of the structural interview body 7 are 50cm×50cm×30cm, a 20cm wide section of original rock is retained in the middle of the initial rock removal area 9 to form an original rock support body 10. This original rock support body 10 continues to support the rock mass above the initial rock removal area 9, thereby reducing the disturbance that the rock removal process in the initial rock removal area 9 may cause to the structural interview body 7.

[0065] Specifically, the rock mass in the preliminary excavation zone 9 is cut manually using a rock cutting machine. Since the rock mass cut by the cutting machine has a limited thickness, the thickness of a single layer of rock mass is limited to the maximum cutting thickness of the cutting machine. The rock mass is then broken in layers using tools such as electric picks, steel wedges, and sledgehammers.

[0066] Step 302: Install test specimen constraint components 6 on the lower plate 3 of the target structural surface inside the initial rock mass removal area 9. These constraints are applied one-to-one to the middle position of the lower end of all structural test specimens 7 along the slope, except for the structural test specimen 7 directly opposite the original rock support 10. Figure 5 As shown.

[0067] Step 303: Remove the rock mass located at the original rock support 10 along the slope normal of the reserved rock mass 5 of the test specimen, which is situated on the upper side of the target structural surface 4. Figure 6 As shown.

[0068] Step 304: Install the test specimen constraint 6 on the lower plate 3 of the target structure surface to constrain the middle position of the lower end of the test specimen 7 along the slope, which is directly opposite the original rock support 10. Figure 7 As shown.

[0069] First, the original rock support 10 is retained to support the rock mass above the preliminary rock removal area 9. Next, the test specimen constraint 6 is used to constrain the middle position of the lower end of all structural test specimens 7 except the one directly opposite the original rock support 10. Then, the rock mass above the target structural surface 4 at the original rock support 10 is removed. Finally, the test specimen constraint 6 is used to constrain the lower end of the structural test specimen 7 directly opposite the original rock support 10. This ensures the continuity and reliability of the constraint on the lower end of the rock mass above the preliminary rock removal area 9 during the removal of the rock mass inside the preliminary rock removal area 9, and greatly reduces the disturbance to the rock mass above the preliminary rock removal area 9 during the removal process.

[0070] In steps 100, 300, 400, and 500, the rock mass is broken layer by layer manually using cutting machines, electric picks, steel wedges, and sledgehammers. Using these tools to break the rock mass layer by layer ensures the processing speed of the structural test object 7 while minimizing disturbance to it.

[0071] In step 400, the test specimen constraint 6 used to constrain the left or right side of the structural test specimen 7 is arranged close to the upper edge of the structural test specimen 7. This helps to further reduce the disturbance to the structural test specimen 7 caused by the removal of rock mass on the upper side of the structural test specimen 7.

[0072] The test specimen constraint 6 is a steel bar, arranged along the normal direction of the target structural surface 4. One end of the bar is inserted into the lower plate 3 of the target structural surface, and the other end extends above the target structural surface 4 to constrain the test specimen 7. During construction, an electric hammer is used to drill a 20cm hole in the lower plate 3 of the target structural surface 4 along the normal direction. Then, a 30cm long and 6mm diameter HRB400 steel bar is hammered into the hole, with the remaining 10cm constraining the test specimen 7 on the upper side of the target structural surface 4.

[0073] By using steel reinforcement to replace the original rock to constrain the structural interview body 7, the disturbance caused to the structural interview body 7 by the release of the original rock constraint around the structural interview body 7 can be minimized as much as possible.

[0074] The length of the test specimen constraint 6 located within the lower plate 3 of the target structural surface is not less than 20 cm, and the length located on the upper side of the target structural surface 4 is not less than 1 / 3 of the thickness of the test specimen 7.

[0075] In step 600, an angle grinder is used to cut all the test specimen constraints 6 around the test specimen 7 at the pre-shear surface of the target structural surface 4.

[0076] Example 2:

[0077] At the construction site of a key project in Tibet, there are a large number of steeply inclined structural surfaces that require in-situ direct shear tests. The processing method for low-disturbance steeply inclined structural surfaces under this condition is as follows.

[0078] Step 100: Rock mass trimming on the hanging wall of the target structure:

[0079] After blasting and hydraulic splitting, the upper plate 2 of the target structural surface has a thickness of 30cm to 50cm. It is necessary to use an electric pick, steel wedges, and a sledgehammer to trim the rock mass exceeding 30cm in thickness, reducing the thickness of the upper plate 2 to 30cm to obtain the pre-reserved rock mass 5 for the test specimen. Specifically, holes are first drilled at distances of 30cm and 40cm from the target structural surface 4 using an electric pick. Then, steel wedges are inserted into the holes, and the wedges are repeatedly struck with a sledgehammer to break the rock layer by layer. The overall thickness of the pre-reserved rock mass 5 for the test specimen is controlled within the range of 30cm ± 2cm.

[0080] Step 200: Draw a line:

[0081] Lines are drawn on the slope of the reserved rock mass 5 of the test specimen to mark the positions of multiple structural test specimens 7, the preliminary rock mass removal area 9 and the original rock support body 10. The preliminary rock mass removal area 9 is located on the lower side of all structural test specimens 7 and is connected to all structural test specimens 7. The original rock support body 10 is located in the preliminary rock mass removal area 9 and is connected to one of the structural test specimens 7.

[0082] Step 200 specifically includes the following steps:

[0083] Step 201: Determine the dimensions and quantity of structural interview elements 7, and the spacing between structural interview elements 7;

[0084] Step 202: Draw lines on the slope of the reserved rock mass 5 of the test specimen to mark the positions of all structural test specimens 7, and the lower edges of all structural test specimens 7 are collinear;

[0085] Step 203: Draw lines on the slope of the reserved rock mass 5 of the test specimen to mark the position of the preliminary rock mass removal area 9, and make the upper edge of the preliminary rock mass removal area 9 collinear with the lower edge of the structural test specimen 7.

[0086] Step 204: Draw lines within the initial rock mass removal area 9 to mark the position of the original rock support 10, ensuring that the upper edge of the original rock support 10 is collinear with the lower edge of the structural interview body 7, and that the lower edge is collinear with the lower edge of the initial rock mass removal area 9, and that the original rock support 10 is aligned with the middle structural interview body 7 among all structural interview bodies 7.

[0087] Step 300: Removal of lower rock mass and installation of lower end restraints:

[0088] The rock mass was cut along the lower section of the reserved rock mass 5 of the specimen using a rock cutting machine. The maximum cutting thickness of the cutting machine was used as the boundary. The rock was then broken into layers using an electric pick, steel wedges and a sledgehammer until the lower section of the reserved rock mass 5 of the specimen was broken down to the target structural surface 4. A 20cm wide section of the original rock was retained in the middle of the entire row of specimens as the original rock support 10.

[0089] Using an electric pick, holes with a diameter of 6mm and a depth of 20cm are drilled at the center of the lower section of each structural specimen 7 along the normal direction of the target structural surface 4. Then, reinforcing bars are driven into the air as a support structure to prevent the structural specimen 7 from sliding down. The reinforcing bars are 30cm long and 6mm in diameter HRB400, with 20cm driven into the holes and the remaining 10cm left external to prevent disturbance during the processing of the structural specimen 7. Next, the existing original rock support 10 is cut and removed, and then reinforcing bars are driven in to replace the original rock support 10, thus constraining the lower end face of the structural specimen 7 at the center position along the slope.

[0090] Step 400: Removal of rock mass on the left and right sides and installation of restraints on the left and right sides:

[0091] The rock mass on both sides of each structural specimen 7 is cut and removed. The original rock support 10 is then cut and removed, and steel bars are hammered in to replace it. The structural specimen 7 in the middle position is preserved at a size of 50cm × 50cm. The original rock support 10 is cut and removed, and steel bars are hammered in to replace it. The structural specimens 7 in the middle position are spaced 50cm apart. The upper part of the reserved structural specimen 7 is not cut off temporarily to reduce the disturbance to the structural specimen 7.

[0092] Then, on both sides of the rock mass to be cut in the structural interview body 7, a hole 20cm deep is drilled at a distance of 35cm from the bottom surface of the cutting surface, and steel bars are driven into the air as a support structure to reduce the disturbance when the upper rock mass is cut and broken.

[0093] Step 500: Removal of the upper rock mass:

[0094] After structural interview body 7 is constrained by steel bars, the remaining upper rock mass connected to the original rock is cut and removed. After this part is cut and removed, structural interview body 7 is completed.

[0095] Step 600, Constraint Cutting: Install the template and pour concrete on the slope of each structural test specimen 7. After the concrete has cured, before testing the structural test specimen 7, cut all the test specimen constraints 6 around the structural test specimen 7 along the target structural surface 4.

Claims

1. A method for fabricating a low-disturbance, steeply tilted structural interview body, characterized in that: Includes the following steps: Step 100, Rock mass trimming of the upper (2) side of the target structure: trim the rock mass of the upper (2) side of the target structure to the required thickness to obtain the reserved rock mass (5) for the test specimen. Step 200: Draw lines, which specifically includes the following steps: Step 201: Determine the size and number of the structural interview body (7), and the spacing between the structural interview bodies (7); Step 202: Draw lines on the slope of the reserved rock mass (5) of the test specimen to mark the positions of all structural test specimens (7), and the lower edges of all structural test specimens (7) are collinear; Step 203: Draw lines on the slope of the reserved rock mass (5) of the test specimen to mark the position of the preliminary rock mass removal area (9), and make the upper edge of the preliminary rock mass removal area (9) collinear with the lower edge of the structural test specimen (7); Step 204: Draw lines in the preliminary rock mass removal area (9) to mark the position of the original rock support (10), so that the upper edge of the original rock support (10) is collinear with the lower edge of the structural interview body (7), the lower edge is collinear with the lower edge of the preliminary rock mass removal area (9), and the original rock support (10) is aligned with the middle structural interview body (7) among all structural interview bodies (7); Step 300, Removal of the lower rock mass and installation of the lower restraint, specifically includes the following steps: Step 301: Remove the rock mass located above the target structural surface (4) in the preliminary excision area (9) of the rock mass (9) except for the original rock support (10); along the slope normal of the reserved rock mass (5) of the test specimen. Step 302: Install test body constraint parts (6) on the lower plate (3) of the target structural surface inside the initial rock mass removal area (9), and form constraints at the middle position of the lower end of all structural test bodies (7) except the structural test body (7) directly opposite the original rock support body (10); Step 303: Remove the rock mass located on the upper side of the target structural surface (4) at the original rock support (10) along the slope normal of the reserved rock mass (5) of the test specimen; Step 304: Install the test body constraint component (6) on the lower plate (3) of the target structure to form a constraint on the middle position of the lower end of the test body (7) of the structure facing the original rock support (10) along the slope; Step 400: Removal of left and right side rock mass and installation of left and right side constraint components: Remove the rock mass on the left and right sides of each structural test specimen (7) located on the upper side of the target structural surface (4) along the slope normal of the reserved rock mass (5) of the test specimen, and install the test specimen constraint component (6) on the lower plate (3) of the target structural surface to form constraints on the left and right sides of each structural test specimen (7); Step 500: Remove the upper rock mass: Remove the rock mass on the upper side of each structural test specimen (7) along the slope normal of the reserved rock mass (5) of the test specimen, so that each structural test specimen (7) is separated from the original rock. Step 600, Constraint Cutting: Install the template and pour concrete on the slope of each structural test body (7). After the concrete has cured, before testing the structural test body (7), cut all test body constraints (6) around the structural test body (7) along the target structural surface (4).

2. The method for processing a low-disturbance steeply tilted structural test object as described in claim 1, characterized in that: The rock mass thickness of the upper surface (2) of the target structure after modification in step 100 is 30cm ± 2cm.

3. The low-disturbance steep-dip-structure-sample-processing method of claim 1, wherein: The number of the structured interview body (7) is odd.

4. The low-disturbance steep-dip-structure-sample-processing method of claim 1, wherein: In steps 100, 300, 400 and 500, the rock mass is broken up layer by layer by manual means using a cutting machine, electric pick, steel wedge and sledgehammer.

5. The low-disturbance steep-dip-structure-sample-processing method of claim 1, wherein: In step 400, the test body constraint member (6) used to form a constraint on the left or right side of the structural test body (7) is arranged near the upper edge of the structural test body (7).

6. The low-disturbance steep-dip-structure-sample-processing method of claim 1, wherein: The test specimen constraint (6) is a steel bar, which is arranged along the normal direction of the target structural surface (4). One end of the bar is inserted into the lower plate (3) of the target structural surface, and the other end extends to the top of the target structural surface (4) to constrain the test specimen (7).

7. The method for processing a low-disturbance steeply tilted structural test object as described in claim 6, characterized in that: The length of the test specimen constraint (6) located within the lower plate (3) of the target structural surface is not less than 20 cm, and the length located on the upper side of the target structural surface (4) is not less than 1 / 3 of the thickness of the test specimen (7).

8. The method for processing a low-disturbance steeply tilted structural test object as described in claim 1, characterized in that: In step 600, an angle grinder is used to cut all the test body constraints (6) around the test body (7) at the pre-shear surface of the target structural surface (4).

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