Method for making intermittent weak sandwich structure surface

Abstract

A method for making a discontinuous weak interlayer structure surface comprises the following steps: step 1, surveying the engineering site to find out the size and mineral composition of the weak interlayer area that affects the stability of the rock; step 2, formulating an experimental plan according to the size and mineral composition of the weak interlayer area, making a strip-shaped discontinuous weak interlayer structure surface consistent with the engineering, and obtaining various indicators of the mechanical properties of the weak interlayer structure surface through a direct shear test; step 3, installing a discontinuous weak interlayer structure surface making device in the laboratory; step 4, according to the experimental plan, using the weak interlayer system to prefabricate the required weak interlayer; step 5, after pushing the weak interlayer in the weak interlayer system into the fixing system, loosening the connecting clamp to make the displacement film pop out, loosening the mechanical arm in the fixing system to take out the sample, and completing the sample making of a discontinuous weak interlayer structure surface. The present invention can not only complete the sample making of the strip-shaped discontinuous weak interlayer, but also is simple and easy to operate.

Description

Technical Field

[0001] The invention belongs to the technical field of geotechnical testing, and relates to a method for manufacturing a discontinuous weak interlayer structural surface, which is suitable for manufacturing a structural surface of strip-shaped weak interlayers with different thicknesses, widths and angles. Background Art

[0002] There are various types of geological interfaces in the rock mass, such as original bedding, layers, faults, joints, cleavage, interlayer dislocation surfaces, etc. formed in geological processes, which are collectively called structural surfaces. Rock blocks of different sizes and shapes cut by structural surfaces are called structural bodies. Structural surfaces and structural bodies are the two major elements that make up the rock mass. In the process of studying structural surfaces, since there are not only continuous weak interlayers but also discontinuous weak interlayers in the structural surfaces of natural rock masses, and the existing methods can only produce samples with continuous weak interlayer structural surfaces, it is impossible to produce discontinuous structural surfaces, nor can it complete the production of strip-type discontinuous structural surfaces of different widths and thicknesses, and it is even more impossible to produce discontinuous weak interlayer structural surfaces of different angles. Summary of the invention

[0003] In order to overcome the shortcomings of the existing methods that can only produce samples with continuous weak interlayer structural surfaces, it is impossible to realize the production of discontinuous structural surfaces, it is also impossible to complete the production of strip-type discontinuous structural surfaces with different widths and thicknesses, and it is even more impossible to realize the production of discontinuous weak interlayer structural surfaces at different angles, the present invention provides a method for producing discontinuous weak interlayer structural surfaces, which can effectively overcome the shortcomings of conventional structural surface production devices and operating methods, not only can it complete the production of strip-type discontinuous weak interlayer samples, but also is simple, easy to operate and convenient to operate.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A method for manufacturing a discontinuous weak sandwich structure surface comprises the following steps:

[0006] Step 1: Survey the project site to find out the size and mineral composition of the weak interlayer area that affects rock stability;

[0007] Step 2: formulate an experimental plan based on the size and mineral composition of the weak interlayer area, produce a strip-shaped discontinuous weak interlayer structure surface consistent with the project, and then obtain various indicators of the mechanical properties of the weak interlayer structure surface through direct shear tests.

[0008] Step 3, install a discontinuous weak interlayer structure surface manufacturing device in the laboratory, the device includes a platform, a front-end transmission machine, a rear-end transmission machine, a transmission system traction rope, a transmission system connection fixture, a replacement membrane, an upper plate fixer, a lower plate fixer, a weak interlayer thickness adjustment, a fixed system chassis, a rock structure surface plate, a rock structure surface lower plate, a weak interlayer thickness regulator, a weak interlayer width regulator, a weak interlayer manufacturing system upper cover, a weak interlayer manufacturing system upper plate, a weak interlayer, a weak interlayer manufacturing system lower plate and a weak interlayer manufacturing system outer frame, the front-end transmission machine and the rear-end transmission machine are respectively located at the left and right ends of the platform, the fixed system chassis is fixed behind the front-end transmission machine, a weak interlayer thickness adjustment rod is used to adjust the spacing between the upper plate fixer and the lower plate fixer, and the upper plate of the rock structure surface and the rock structure are respectively fixed. The lower plate of the surface is fixed, the lower plate of the weak interlayer production system is fixed between the rear-end transmission machine and the fixed system chassis, the outer frame of the weak interlayer production system is installed on the lower plate of the weak interlayer production system, the weak interlayer thickness regulator and the weak interlayer width regulator are installed on the left side of the outer frame of the weak interlayer production system, and the upper cover of the weak interlayer production system is installed on the top surface of the outer frame of the weak interlayer production system. After the weak interlayer is laid on the upper and lower sides and the replacement film is arranged, it is fixed between the upper plate of the weak interlayer production system and the lower plate of the weak interlayer production system. The upper plate of the weak interlayer production system and the upper plate of the weak interlayer production system are installed in the slide rail in the outer frame of the weak interlayer production system; the left end of the transmission system traction rope is connected to the front-end transmission machine, and the right end is connected to the transmission system connection fixture. The right end of the transmission system connection fixture clamps the replacement film, and the rightmost end of the replacement film is connected to the rear-end transmission machine;

[0009] Step 4: According to the experimental plan, use the weak interlayer system to prefabricate the required weak interlayer.

[0010] Step 5: After pushing the weak interlayer in the weak interlayer system into the fixing system, loosen the connecting clamp to make the replacement film pop out, loosen the mechanical arm in the fixing system to take out the sample, and complete the preparation of a sample containing a discontinuous weak interlayer structure surface.

[0011] Further, in step 3, the rear roller spacing of the transmission system, the thickness clamp spacing of the thickness width control unit at the output end of the track frame soil layer, and the position of the thickness adjustment rod of the fixed system are determined according to the experimental requirements for the thickness of the intermittent weak interlayer; the width clamp spacing of the thickness width control unit at the output end of the track frame soil layer is determined according to the experimental requirements for the width of the intermittent weak interlayer; the rotation angle of the rotating chassis in the fixed system is determined according to the experimental requirements for the thickness of the interlayer; the weak interlayer prefabricated in the weak interlayer system in step 4 is changed according to the interlayer appearance encountered in the project, and the operation method further includes the following steps:

[0012] Step 6: Change the rear roller spacing of the transmission system, the thickness and width control unit clip spacing at the output end of the track frame soil layer, and the position of the thickness adjustment rod of the fixed system, repeat steps 4 to 5, and realize the production of strip-shaped discontinuous structural surfaces with different thicknesses and widths;

[0013] Step 7, changing the rotation angle of the rotating chassis in the fixing system, repeating steps 4 to 5, to achieve the production of strip-shaped intermittent weak sandwich structure surfaces at different angles;

[0014] Step 8, changing the soft interlayer prefabricated by the soft interlayer system, repeating step 5, to achieve the production of strip-shaped discontinuous structural surfaces with different material compositions and different discontinuous positions;

[0015] Step 9: End the test, remove the soil, and dismantle the device.

[0016] Furthermore, in the intermittent weak sandwich structure surface manufacturing device, the front end transmission machine includes a front end motor, a front end rotating shaft moving slide rail, a front end rotating shaft and a front end transmission machine rear cover. The front end motor is installed at the leftmost end of the platform. After the front end rotating shaft and the front end rotating shaft moving slide rail are assembled, they are installed above the front end motor and covered with the transmission machine rear cover.

[0017] Furthermore, the rear end transmission machine includes a rear end motor, a rear end rotating shaft moving slide rail, an upper roller for controlling the thickness of the weak interlayer, a lower roller for controlling the thickness of the weak interlayer, and a rear cover of the rear end transmission machine. The rear end motor is installed at the rightmost end of the platform. The upper roller for controlling the thickness of the weak interlayer, the lower roller for controlling the thickness of the weak interlayer, and the rear end rotating shaft moving slide rail are assembled and installed above the rear end motor, and the rear cover of the rear end transmission machine is covered.

[0018] Furthermore, the transmission system connecting clamp includes a transmission system connecting plate, a traction ring, a fixed connecting base plate bolt, a transverse membrane clamp, a transverse and vertical clamp connecting piece and a vertical membrane clamp. The traction ring is fixed at the central position of one side of the transmission system connecting plate, and the vertical membrane clamp is fixed on the other side of the transmission system connecting plate by the fixed connecting base plate bolt. The transverse membrane clamp is fixed to the vertical membrane clamp by the transverse and vertical clamp connecting piece to form a rectangle.

[0019] The upper plate fixer comprises an upper plate annular support outer frame, a plate fixing arm on a rock structure surface, and an upper box of a fixing system. The plate fixing arm on a rock structure surface is installed in the upper plate annular support outer frame and surrounds the upper box of the fixing system with four arms;

[0020] The lower plate fixer includes a lower plate annular support outer frame, a rock structure surface lower plate fixing arm, a fixing system lower box, and a fixing system tripod. The rock structure surface lower plate fixing arm is installed in the lower plate annular support outer frame and embraces the fixing system lower box with four arms. The fixing system tripod fixes the lower plate annular support outer frame on the rotating chassis.

[0021] The fixed system chassis includes a rotating chassis, a chassis connecting cap, a damping pad, a fixed chassis, a platform connecting bolts and inner and outer disk connecting bolts. The fixed chassis is fixed to the platform by the platform connecting bolts, the rotating chassis is installed in the fixed chassis, and then the chassis connecting cap is fixed to the connection between the rotating chassis and the fixed chassis by the inner and outer disk connecting bolts.

[0022] The weak interlayer thickness regulator comprises an upper weak interlayer thickness regulator and a lower weak interlayer thickness regulator; the upper weak interlayer thickness regulator and the lower weak interlayer thickness regulator are respectively fixed on the upper bracket of the weak interlayer manufacturing system and the base of the weak interlayer manufacturing system;

[0023] The weak interlayer width regulator comprises a left weak interlayer width regulator and a right weak interlayer width regulator; the left weak interlayer width regulator is fixed on a left bracket of the weak interlayer manufacturing system, and the right weak interlayer width regulator is fixed on a right bracket of the weak interlayer manufacturing system.

[0024] The outer frame of the weak interlayer production system includes a weak interlayer production system base, a left bracket of the weak interlayer production system, a right bracket of the weak interlayer production system, an upper bracket of the weak interlayer production system, a fixed foot seat of the weak interlayer production system and fixed bolts of the weak interlayer production system. The base of the weak interlayer production system is installed between the left bracket of the weak interlayer production system and the right bracket of the weak interlayer production system, and the base of the weak interlayer production system is fixed to the rear section of the platform by four sets of fixed bolts and fixed feet of the weak interlayer production system.

[0025] In the present invention, the fixing system is composed of an upper plate fixer, a lower plate fixer, a weak interlayer thickness adjustment rod and a chassis, wherein the upper plate fixer and the lower plate fixer are provided with four fixing rods for fixing the upper and lower plates of the rock model, and the four interlayer thickness adjustment rods are distributed at the four corners of the upper and lower plate fixers to connect the upper and lower plate fixers, and the lower plate fixer is arranged on the chassis, and the chassis is divided into a rotating chassis and a fixed chassis, the rotating chassis can rotate, and the fixed chassis is fixed to the operating platform by bolts; the weak interlayer making system is composed of an upper and lower plate of the weak interlayer making system, an outer frame of the weak interlayer making system, a weak interlayer thickness width adjuster, a weak interlayer thickness adjuster, a weak interlayer width adjuster, an upper cover of the weak interlayer making system, an upper plate of the weak interlayer making system, a weak interlayer, and a weak interlayer making system The invention relates to a track frame comprising a lower plate of the working system, wherein the prefabricated weak interlayer is installed in the track frame by the prefabricated interlayer mold clamp after being completed in the prefabricated mold, the track frame soil layer output end is a thickness width control system, the thickness width control system is composed of two pairs of controllable retractable clamps, eight fixed angle seats are installed at the four corners, and the outer frame of the weak interlayer production system is fixed on the operating platform by bolts and nuts; the transmission system is composed of a front-end transmission machine, a rear-end transmission machine, a transmission system traction cable, a connecting fixture, and a replacement membrane, wherein the front-end transmission machine is provided with a slide rail to make the roller adapt to the height of the interlayer, the roller is connected to the motor to control the movement of the transmission system traction cable, the connecting fixture connects the transmission system traction cable and the replacement membrane, and the rear-end transmission machine has two rollers to control the position of the replacement membrane.

[0026] The beneficial effects of the present invention are mainly manifested in: being able to produce strip-shaped discontinuous structural surfaces of different widths, thicknesses and angles, and having the following advantages: (1) being able to produce discontinuous structural surfaces; (2) being able to produce strip-shaped discontinuous structural surfaces of different widths and thicknesses; (3) being able to produce discontinuous weak sandwich structural surfaces of different angles; and (4) being able to produce samples more quickly, efficiently and accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view of the present invention.

[0028] Figure 2 It is a top view of the present invention.

[0029] Figure 3 Schematic diagram of various systems and mechanisms of the present invention.

[0030] Figure 4 It is the front view of the transmission system front conveyor.

[0031] Figure 5 This is the front view of the fixing system.

[0032] Figure 6 The top view of the fixing system.

[0033] Figure 7 This is the front view of the transmission system connector.

[0034] Figure 8 This is the front view of the transmission system connector.

[0035] Fig. 9 Make a system elevation view for the weak interlayer.

[0036] Fig.10 Make a top view of the system for the weak interlayer.

[0037] Fig.11 Make a left view of the system for the weak interlayer.

[0038] Fig.12 It is a schematic diagram of the connection between the fixed chassis and the rotating chassis.

[0039] The accompanying drawings are marked as follows: 1. platform; 2. front end transmission machine, 2-1. front end motor; 2-2. front end rotating shaft moving slide rail; 2-3. front end rotating shaft; 2-4. front end transmission machine rear cover; 3. rear end transmission machine, 3-1. rear end motor; 3-2. rear end rotating shaft moving slide rail; 3-3. upper roller for controlling the thickness of weak interlayer; 3-4. lower roller for controlling the thickness of weak interlayer; 3-5. rear end transmission machine rear cover; 4. transmission system traction rope; 5. transmission system connecting clamp, 5-1. transmission system connecting plate; 5-2. traction ring; 5-3. fixing connecting bottom plate bolt; 5-4. horizontal membrane clamp; 5-5. horizontal and vertical clamp connecting piece; 5-6. vertical membrane clamp; 6. replacement membrane; 7. upper plate fixer, 7-1. upper plate annular support outer frame; 7-2. upper plate fixing arm on rock structure surface; 7-3. fixing system fixing system upper box; 8. lower plate fixer, 8-1. Lower plate annular support outer frame; 8-2. Lower plate fixing arm of rock structure surface; 8-3. Lower box of fixing system; 8-4. Tripod of fixing system; 9. Weak interlayer thickness adjustment rod; 10. Fixing system chassis, 10-1. Rotating chassis; 10-2. Chassis connecting cap; 10-3. Damping pad; 10-4. Fixing chassis; 10-5. Platform connecting bolts; 10-6. Inner and outer plate connecting bolts; 11. Upper plate of rock structure surface; 12. Lower plate of rock structure surface; 13. Weak interlayer thickness adjuster, 13-1. Upper weak interlayer thickness adjuster; 13-2. Lower weak interlayer thickness adjuster; 14. Weak interlayer width adjuster, 14-1. Left weak interlayer width adjuster; 14-2. Right weak interlayer width adjuster; 15. Upper cover of weak interlayer making system; 16. Upper plate of the weak interlayer production system; 17. Weak interlayer; 18. Lower plate of the weak interlayer production system; 19. Outer frame of the weak interlayer production system, 19-1. Base of the weak interlayer production system; 19-2. Left bracket of the weak interlayer production system; 19-3. Right bracket of the weak interlayer production system; 19-4. Upper bracket cover of the weak interlayer production system; 19-5. Fixed foot of the weak interlayer production system; 19-6. Fixed bolts of the weak interlayer production system. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with the accompanying drawings.

[0041] Reference Figures 1 to 12 , a method for manufacturing a discontinuous weak sandwich structure surface, comprising the following steps:

[0042] Step 1: Survey the project site to find out the size and mineral composition of the weak interlayer area that affects rock stability;

[0043] Step 2: formulate an experimental plan according to the size and mineral composition of the weak interlayer area, produce a strip-shaped intermittent weak interlayer structure surface consistent with the project, and then obtain various indicators of the mechanical properties of the weak interlayer structure surface through a direct shear test;

[0044] Step 3, install a discontinuous weak interlayer structure surface manufacturing device in the laboratory, the device includes a platform 1, a front-end transmission machine 2, a rear-end transmission machine 3, a transmission system traction rope 4, a transmission system connection fixture 5, a replacement membrane 6, an upper plate fixer 7, a lower plate fixer 8, a weak interlayer thickness adjustment rod 9, a fixed system chassis 10, a rock structure surface upper plate 11, a rock structure surface lower plate 12, a weak interlayer thickness regulator 13, a weak interlayer width regulator 14, a weak interlayer manufacturing system upper cover 15, a weak interlayer manufacturing system upper plate 16, a weak interlayer 17, a weak interlayer manufacturing system lower plate 18 and a weak interlayer manufacturing system outer frame 19; the front-end transmission machine 2 and the rear-end transmission machine 3 are respectively located at the left and right ends of the platform 1, and the fixed system chassis 10 The weak interlayer thickness adjusting rod 9 is used to adjust the spacing between the upper plate fixing device 7 and the lower plate fixing device 8, and the upper plate 11 and the lower plate 12 of the rock structure surface are fixed respectively. The outer frame 19 of the weak interlayer making system is fixed between the rear end conveyor 3 and the fixing system chassis 10. The weak interlayer thickness adjusting device 13 and the weak interlayer width adjusting device 14 are installed on the left side of the outer frame 19 of the weak interlayer making system. The upper cover 15 of the weak interlayer making system is installed on the outer frame 19 of the weak interlayer making system. The top surface of the outer frame of the layer production system, the weak interlayer 17 is fixed between the upper plate 16 of the weak interlayer production system and the lower plate 18 of the weak interlayer production system after the replacement film 6 is laid on the upper and lower surfaces, the upper plate 16 of the weak interlayer production system and the upper plate 18 of the weak interlayer production system are installed in the slide rail in the outer frame 19 of the weak interlayer production system, the left end of the transmission system traction rope 4 is connected to the front transmission machine 2, and the right end is connected to the transmission system connection fixture 5, the right end of the transmission system connection fixture 5 clamps the replacement film 6, and the right end of the replacement film 6 is connected to the rear transmission machine 3;

[0045] Step 4: According to the experimental plan, use the soft interlayer system to prefabricate the required soft interlayer;

[0046] Step 5: After pushing the weak interlayer in the weak interlayer system into the fixing system, loosen the connecting clamp to make the replacement film pop out, loosen the mechanical arm in the fixing system to take out the sample, and complete the preparation of a sample containing a discontinuous weak interlayer structure surface.

[0047] Further, in step 3, the rear roller spacing of the transmission system, the thickness clamp spacing of the thickness width control unit at the output end of the track frame soil layer, and the position of the thickness adjustment rod of the fixed system are determined according to the experimental requirements for the thickness of the intermittent weak interlayer; the width clamp spacing of the thickness width control unit at the output end of the track frame soil layer is determined according to the experimental requirements for the width of the intermittent weak interlayer; the rotation angle of the rotating chassis in the fixed system is determined according to the experimental requirements for the thickness of the interlayer; the weak interlayer prefabricated in the weak interlayer system in step 4 is changed according to the interlayer appearance encountered in the project, and the operation method further includes the following steps:

[0048] Step 6: Change the rear roller spacing of the transmission system, the thickness and width control unit clip spacing at the output end of the track frame soil layer, and the position of the thickness adjustment rod of the fixed system, repeat steps 4 to 5, and realize the production of strip-shaped discontinuous structural surfaces with different thicknesses and widths;

[0049] Step 7, changing the rotation angle of the rotating chassis in the fixing system, repeating steps 4 to 5, to achieve the production of strip-shaped intermittent weak sandwich structure surfaces at different angles;

[0050] Step 8, changing the soft interlayer prefabricated by the soft interlayer system, repeating step 5, to achieve the production of strip-shaped discontinuous structural surfaces with different material compositions and different discontinuous positions;

[0051] Step 9: End the test, remove the soil, and dismantle the device.

[0052] Furthermore, in the intermittent weak sandwich structure surface manufacturing device, the front end transmission machine includes a front end motor 2-1, a front end rotating shaft moving slide rail 2-2, a front end rotating shaft 2-3 and a front end transmission machine rear cover 2-4. The front end motor 2-1 is installed at the leftmost end of the platform 1. The front end rotating shaft 2-3 and the front end rotating shaft moving slide rail 2-2 are assembled and installed above the front end motor 2-1, and covered with the transmission machine rear cover 2-4.

[0053] Furthermore, the rear-end transmission machine includes a rear-end motor 3-1, a rear-end rotating shaft moving slide rail 3-2, an upper roller 3-3 for controlling the thickness of the weak interlayer, a lower roller 3-4 for controlling the thickness of the weak interlayer and a rear-end transmission machine rear cover 3-5. The rear-end motor 3-1 is installed at the rightmost end of the platform 1. The upper roller 3-3 for controlling the thickness of the weak interlayer, the lower roller 3-4 for controlling the thickness of the weak interlayer and the rear-end rotating shaft moving slide rail 3-2 are assembled and installed above the rear-end motor 3-1, and the rear-end transmission machine rear cover 3-5 is covered.

[0054] Furthermore, the transmission system connecting clamp includes a transmission system connecting plate 5-1, a traction ring 5-2, a fixed connecting base plate bolt 5-3, a transverse membrane clamp 5-4, a transverse and vertical clamp connector 5-5 and a vertical membrane clamp 5-6. The traction ring 5-2 is fixed at the central position of one side of the transmission system connecting plate 5-1, and the vertical membrane clamp 5-6 is fixed on the other side of the transmission system connecting plate 5-1 by the fixed connecting base plate bolt 5-3. The transverse membrane clamp 5-4 is fixed to the vertical membrane clamp 5-6 by the transverse and vertical clamp connector 5-5 to form a rectangular clamp.

[0055] The upper plate fixer includes an upper plate annular support outer frame 7-1, a rock structure surface upper plate fixing arm 7-2 and a fixing system upper box 7-3. The rock structure surface upper plate fixing arm 7-2 is installed in the upper plate annular support outer frame 7-1 and embraces the fixing system upper box 7-3 with four arms.

[0056] The lower plate fixer includes a lower plate annular support outer frame 8-1, a rock structure surface lower plate fixing arm 8-2, a fixing system lower box 8-3 and a fixing system tripod 8-4. The rock structure surface lower plate fixing arm 8-2 is installed in the lower plate annular support outer frame 8-1 and embraces the fixing system lower box 8-3 with four arms. The fixing system tripod 8-4 fixes the lower plate annular support outer frame 8-1 on the rotating chassis 10-1.

[0057] The fixed system chassis includes a rotating chassis 10-1, a chassis connecting cap 10-2, a damping pad 10-3, a fixed chassis 10-4, a platform connecting bolts 10-5 and inner and outer disk connecting bolts 10-6. The fixed chassis 10-4 is fixed to the platform 1 by the platform connecting bolts 10-5, and the rotating chassis 10-1 is installed in the fixed chassis 10-4. The inner and outer disk connecting bolts 10-6 and the chassis connecting cap 10-2 are fixed at the connection between the rotating chassis 10-1 and the fixed chassis 10-4.

[0058] The weak interlayer thickness regulator includes an upper weak interlayer thickness regulator 13-1 and a lower weak interlayer thickness regulator 13-2, and the upper weak interlayer thickness regulator 13-1 and the lower weak interlayer thickness regulator 13-2 are respectively fixed on the upper bracket 19-4 of the weak interlayer manufacturing system and the base 19-1 of the weak interlayer manufacturing system;

[0059] The weak interlayer width regulator includes a left weak interlayer width regulator 14-1 and a right weak interlayer width regulator 14-2. The left weak interlayer width regulator 14-1 is fixed on a left bracket 19-2 of the weak interlayer manufacturing system, and the right weak interlayer width regulator 14-2 is fixed on a right bracket 19-3 of the weak interlayer manufacturing system.

[0060] The outer frame of the weak interlayer production system includes a weak interlayer production system base 19-1, a weak interlayer production system left bracket 19-2, a weak interlayer production system right bracket 19-3, a weak interlayer production system upper bracket 19-4, a weak interlayer production system fixed foot 19-5 and a weak interlayer production system fixed bolt 19-6. The weak interlayer production system base 19-1 is installed between the weak interlayer production system left bracket 19-2 and the weak interlayer production system right bracket 19-3, and the weak interlayer production system base 19-1 is fixed to the rear section of the platform 1 by four sets of weak interlayer production system fixed bolts 19-6 and the weak interlayer production system fixed foot 19-5.

[0061] A large area of ​​strip-shaped intermittent weak interlayer structure surface is encountered in a rock slope project. In order to test the influence of the intermittent weak interlayer structure surface on the construction of the rock slope project, the intermittent weak interlayer structure surface manufacturing device and the operation method provided by the present invention are used to manufacture strip-shaped intermittent weak interlayer structure surfaces consistent with the project, and then various indicators of the mechanical properties of the weak interlayer structure surface are obtained through direct shear test.

[0062] In this embodiment, it is necessary to make a structural surface with intermittent weak interlayers. The size of the structural surface is 40mm×40mm, located in the middle of the upper and lower plates of the rock. The intermittent weak interlayers are divided into four areas, showing a strip-type distribution, which are divided into four areas, showing a strip-type distribution, and the width and thickness are all 10mm. The weak interlayer in area A is silty clay; the weak interlayer in area B is silty clay; the left and right ends of area C are filled with 15mm weathered mudstone debris, and the middle 10mm is without weak interlayers; the weak interlayer in area D is silty sand; the rotation angle of the strip-shaped weak interlayer is 0°.

[0063] The implementation process of this embodiment is as follows:

[0064] (1) Place platform 1 in a suitable test area and level it.

[0065] (2) Assemble the front-end transmission machine 2. Install the front-end motor 2-1 at the leftmost end of the platform 1, install the transmission system traction rope 4 on the front-end rotating shaft 2-3, and fix the front-end rotating shaft 2-3 on the front-end rotating shaft moving slide rail 2-2, then install the above-assembled parts on top of the front-end motor 2-1, and finally cover it with the rear cover 2-4 of the transmission machine to form the front-end transmission machine 2.

[0066] (3) Assemble the rear-end conveyor 3. Install the rear-end motor 3-1 at the rightmost end of the platform 1, fix the upper roller 3-3 and the lower roller 3-4 for controlling the thickness of the weak interlayer on the rear-end rotating shaft moving slide rail 3-2, and install the above-assembled parts above the rear-end motor 3-1, and finally cover the rear-end conveyor rear cover 3-5 to form the rear-end conveyor 3.

[0067] (4) Install the fixed system chassis 10. Place the fixed chassis 10-4 in the reserved bolt holes of the platform 1 and fix it to the platform 1 through the platform connection bolts 10-5. Install the rotating chassis 10-1 in the fixed chassis 10-4 and adjust the angle to 0°. Then, fix the chassis connection cap 10-2 at the connection between the rotating chassis 10-1 and the fixed chassis 10-4 through the inner and outer plate connection bolts 10-6 to form the fixed system chassis 10.

[0068] (5) Install the lower plate fixing device 8. Install the lower plate fixing arm 8-2 of the rock structure surface in the lower plate annular support outer frame 8-1, and then install it on the fixing system chassis 10 using the fixing system tripod 8-4.

[0069] (6) Assembling the upper plate fixer 7. The upper plate fixing arm 7-2 of the rock structure surface is installed in the upper plate annular support outer frame 7-1 to form the upper plate fixer 7.

[0070] (7) Fix the lower and upper plates of the rock structure surface. Place the lower plate 12 of the rock structure surface into the lower box 8-3 of the fixing system, then into the lower plate fixer 8, and then fix it through the lower plate fixing arm 8-2 of the rock structure surface; place the upper plate 11 of the rock structure surface into the upper box 7-3 of the fixing system, then into the upper plate fixer 7, and then fix it through the upper plate fixing arm 7-2 of the rock structure surface.

[0071] (8) Adjust the distance between the upper and lower plates on the rock frame surface. Install the weak interlayer thickness adjustment rod 9 at the four corners between the upper plate fixture 7 and the lower plate fixture 8, rotate the weak interlayer thickness adjustment rod 9 to shrink the distance between the upper and lower plates of the rock, and adjust the interlayer thickness to 10 mm.

[0072] (9) Install the weak interlayer production system base 19-1 between the weak interlayer production system left bracket 19-2 and the weak interlayer production system right bracket 19-3, and fix the weak interlayer production system base 19-1 to the rear section of the platform 1 through four sets of weak interlayer production system fixing bolts 19-6 and the weak interlayer production system fixing feet 19-5.

[0073] (10) The lower interlayer thickness regulator 13-2 is installed at the front end of the weak interlayer production system base 19-1, the upper interlayer thickness regulator 13-1 is installed at the front end of the weak interlayer production system upper cover 15, the left interlayer width regulator 14-1 is installed on the left bracket 19-2 of the weak interlayer production system, the right interlayer width regulator 14-2 is installed on the right bracket 19-3 of the weak interlayer production system, and then the upper bracket 19-4 of the weak interlayer production system is installed on the top, and the upper cover 15 of the weak interlayer production system is covered.

[0074] (11) Adjust the interlayer width adjuster 14 to 40 mm and the interlayer thickness adjuster 13 to 10 mm.

[0075] (12) The weak interlayer 17 is divided into four areas, showing a strip-like distribution with a width and thickness of 10 mm. The weak interlayer in area A is silty clay; the weak interlayer in area B is silty clay; the left and right ends of area C are filled with 15 mm weathered mudstone debris, and the middle 10 mm is without weak interlayer; the weak interlayer in area D is silty sand; the four areas are all wrapped by the replacement membrane 6 from top to bottom, front to back.

[0076] (13) Take a pair of upper plates 16 and lower plates 18 of the soft interlayer manufacturing system, clamp the prefabricated soft interlayer 17-1, insert it into the groove on the front side of the soft interlayer manufacturing system frame 21, and fix it at a predetermined position.

[0077] (14) Sequentially insert the prefabricated weak interlayers 17-2 to 17-4 into the grooves on the front side of the outer frame 21 of the weak interlayer manufacturing system according to step 13, and the four weak interlayers are tightly fitted.

[0078] (15) The two vertical membrane clamps 5-5 are fixed to the transmission system connecting plate 5-1 by four fixing base plate bolts 5-3, and the transverse membrane clamp 5-4 is fixed between the two vertical membrane clamps 5-6. After the upper and lower distances are controlled to be the preset interlayer thickness of 10 mm, the positions of the two are fixed with the transverse and vertical clamp fixing parts 5-5.

[0079] (16) Pull out the replacement membrane 6 reserved in the prefabricated weak interlayer 17 and fix it to the transverse membrane clamp 5-4 and the vertical membrane clamp 5-6 on the transmission system connecting plate 5-1.

[0080] (17) Connect the longer replacement membrane 6 reserved at the rear end of the prefabricated weak interlayer 17 to the upper and lower corresponding weak interlayer thickness control upper roller 3-3 and soil layer thickness lower roller 3-4, roll the weak interlayer thickness control upper roller 3-3 and soil layer thickness lower roller 3-4 to reciprocate and roll up the replacement membrane 6, adjust the positions of the upper and lower rollers so that the upper and lower distances are 10 mm of the reserved soil layer thickness and fix them.

[0081] (18) The transmission system traction rope 4 is connected to the traction ring 5-2 of the transmission system connection plate 5-4, and the front end transmission machine 2 contracts the transmission system traction rope 4, gradually straightening the transmission system traction rope 4 and the displacement film 6.

[0082] (19) The rear conveyor 3 and the front conveyor 2 work in coordination, the rear conveyor 3 gradually releases the replacement film 6, and the front conveyor 2 synchronously retracts the replacement film 6, and the weak interlayer 17 moves forward, passes through the interlayer thickness regulator 13 and the interlayer width regulator 14, until it reaches the position reserved between the upper plate 11 of the rock structure surface and the lower plate 12 of the rock structure surface;

[0083] (20) Lock the front conveyor 2, and continue to tighten the replacement membrane 6 with the rear conveyor. After the replacement membrane 6 reaches the tension that pops out the vertical membrane clamp 5-6 and the horizontal membrane clamp 5-4, it is quickly pulled out, and the prefabricated weak interlayer 17 stays in the upper and lower plates of the rock structure surface;

[0084] (21) Loosen the upper plate fixing arm 7-2 of the rock structure surface and the lower plate fixing arm 8-2 of the rock structure surface in the fixing system, loosen the weak interlayer thickness adjustment rod 12, and then take out the prepared sample as a whole.

[0085] (22) The removed sample is placed in a shear test device to obtain various indicators of the structural surface shear test.

[0086] (23) Adjust the thickness adjustment rod 9 of the weak interlayer in step 8, adjust the thickness of the interlayer thickness adjuster 13 and the width of the interlayer width adjuster 14 in step 11, adjust the width and thickness of each area of ​​the weak interlayer 17 in step 12, and repeat steps 13 to 22 to complete the production of strip-shaped discontinuous structural surfaces of different widths and thicknesses.

[0087] (24) By adjusting the angle of the rotating chassis 10-1 in step 4 and repeating steps 8 to 22, the production of discontinuous weak sandwich structure surfaces with different angles, widths, and thicknesses can be completed.

[0088] (25) End the test, remove the soil, and dismantle the device. First, dismantle the connection between the connecting fixture 5, the transmission system traction rope 4, and the replacement membrane 6, and then dismantle the front transmission machine 2 and the rear transmission machine 3 to complete the dismantling of the transmission system; dismantle the connection between the upper plate fixer 7, the lower plate fixer 8, and the weak interlayer thickness adjustment rod 9, and then dismantle the fixing system chassis 10; dismantle the connection between the outer frame of the weak interlayer manufacturing system and the platform.

[0089] The contents described in the embodiments of this specification are merely enumerations of implementation forms of the inventive concept and are for illustrative purposes only. The protection scope of the present invention should not be considered to be limited to the specific forms described in this embodiment, and the protection scope of the present invention also extends to equivalent technical means that can be thought of by ordinary technicians in this field based on the inventive concept.

Claims

1. A method for manufacturing a discontinuous weak sandwich structure surface, characterized in that: The method comprises the following steps: Step 1: Survey the project site to find out the size and mineral composition of the weak interlayer area that affects rock stability; Step 2: formulate an experimental plan according to the size and mineral composition of the weak interlayer area, produce a strip-shaped intermittent weak interlayer structure surface consistent with the project, and then obtain various indicators of the mechanical properties of the weak interlayer structure surface through a direct shear test; Step 3, install a discontinuous weak interlayer structure surface manufacturing device in the laboratory, the device includes a device platform, a front-end transmission machine, a rear-end transmission machine, a transmission system traction rope, a transmission system connection fixture, a replacement membrane, an upper plate fixer, a lower plate fixer, a weak interlayer thickness adjustment rod, a fixing system chassis, a rock structure surface upper plate, a rock structure surface lower plate, a weak interlayer thickness regulator, a weak interlayer width regulator, a weak interlayer manufacturing system upper cover, a weak interlayer manufacturing system upper plate, a weak interlayer, a weak interlayer manufacturing system lower plate and a weak interlayer manufacturing system outer frame, the front-end transmission machine and the rear-end transmission machine are respectively located at the left and right ends of the device platform, the fixing system chassis is fixed behind the front-end transmission machine, the weak interlayer thickness adjustment rod is used to adjust the spacing between the upper plate fixer and the lower plate fixer, and the upper plate and the rock structure surface lower plate are respectively fixed. The lower plate of the stone structure surface is fixed, the lower plate of the weak interlayer production system is fixed between the rear-end transmission machine and the fixing system chassis, the outer frame of the weak interlayer production system is installed on the lower plate of the weak interlayer production system, the weak interlayer thickness regulator and the weak interlayer width regulator are installed on the left side of the outer frame of the weak interlayer production system, the upper cover of the weak interlayer production system is installed on the top surface of the outer frame of the weak interlayer production system, the upper plate of the weak interlayer production system and the lower plate of the weak interlayer production system clamp the weak interlayer with the replacement membrane and slide in the outer frame of the weak interlayer production system, the left end of the transmission system traction rope is connected to the front-end transmission machine, and the right end is connected to the transmission system connection fixture, the right end of the transmission system connection fixture clamps the replacement membrane, and the rightmost end of the replacement membrane is connected to the rear-end transmission machine; the upper plate fixer, the lower plate fixer, the weak interlayer thickness adjustment rod fixing system chassis constitute a fixing system; Step 4: According to the experimental plan, the required weak interlayer is prefabricated using the intermittent weak interlayer structure surface manufacturing device; Step 5. After pushing the weak interlayer in the intermittent weak interlayer structural surface manufacturing device into the fixing system, loosen the connecting clamp to make the replacement membrane pop out, loosen the upper plate fixture and the lower plate fixture in the fixing system to take out the sample, and complete the preparation of a sample containing a discontinuous weak interlayer structural surface.

2. The method for manufacturing a discontinuous weak sandwich structure surface according to claim 1, characterized in that: In the step 3, the rear roller spacing of the transmission system, the thickness clamp spacing of the thickness width control unit at the output end of the track frame soil layer, and the position of the thickness adjustment rod of the fixed system are determined according to the experimental requirements for the thickness of the intermittent weak interlayer; the width clamp spacing of the thickness width control unit at the output end of the track frame soil layer is determined according to the experimental requirements for the width of the intermittent weak interlayer; the rotation angle of the rotating chassis in the fixed system is determined according to the experimental requirements for the thickness of the interlayer; the weak interlayer prefabricated in the weak interlayer system in the step 4 is changed according to the interlayer appearance encountered in the project, and the manufacturing method also includes the following steps: Step 6: Change the rear roller spacing of the transmission system, the thickness and width control unit clip spacing at the output end of the track frame soil layer, and the position of the thickness adjustment rod of the fixed system, repeat steps 4 to 5, and realize the production of strip-shaped discontinuous structural surfaces with different thicknesses and widths; Step 7, changing the rotation angle of the rotating chassis in the fixing system, repeating steps 4 to 5, to achieve the production of strip-shaped intermittent weak sandwich structure surfaces at different angles; Step 8, changing the soft interlayer prefabricated by the soft interlayer system, repeating step 5, to achieve the production of strip-shaped discontinuous structural surfaces with different material compositions and different discontinuous positions; Step 9: End the test, remove the soil, and dismantle the device.

3. The method for manufacturing a discontinuous weak sandwich structure surface according to claim 1 or 2, characterized in that: In the intermittent weak sandwich structure surface manufacturing device, the front end transmission machine includes a front end motor, a front end rotating shaft moving slide rail, a front end rotating shaft and a front end transmission machine rear cover. The front end motor is installed at the leftmost end of the platform. The front end rotating shaft and the front end rotating shaft moving slide rail are assembled and installed above the front end motor, and the transmission machine rear cover is covered. The rear end transmission machine comprises a rear end motor, a rear end rotating shaft movable slide rail, an upper roller for controlling the thickness of the weak interlayer, a lower roller for controlling the thickness of the weak interlayer, and a rear cover of the rear end transmission machine. The rear end motor is installed at the rightmost end of the platform. The upper roller for controlling the thickness of the weak interlayer, the lower roller for controlling the thickness of the weak interlayer and the rear end rotating shaft movable slide rail are assembled and installed above the rear end motor, and the rear cover of the rear end transmission machine is covered.

4. The method for manufacturing a discontinuous weak sandwich structure surface according to claim 1 or 2, characterized in that: The transmission system connecting clamp includes a transmission system connecting plate, a traction ring, a fixed connecting base plate bolt, a transverse membrane clamp, a transverse and vertical clamp connecting piece and a vertical membrane clamp. The traction ring is fixed at the central position of one side of the transmission system connecting plate, and the vertical membrane clamp is fixed on the other side of the transmission system connecting plate by the fixed connecting base plate bolt. The transverse membrane clamp is fixed to the vertical membrane clamp by the transverse and vertical clamp connecting piece to form a rectangle.

5. The method for manufacturing a discontinuous weak sandwich structure surface according to claim 1 or 2, characterized in that: The upper plate fixer comprises an upper plate annular support outer frame, a plate fixing arm on a rock structure surface, and an upper box of a fixing system. The plate fixing arm on a rock structure surface is installed in the upper plate annular support outer frame and surrounds the upper box of the fixing system with four arms; The lower plate fixer includes a lower plate annular support outer frame, a rock structure surface lower plate fixing arm, a fixing system lower box, and a fixing system tripod. The rock structure surface lower plate fixing arm is installed in the lower plate annular support outer frame and embraces the fixing system lower box with four arms. The fixing system tripod fixes the lower plate annular support outer frame on the rotating chassis.

6. The method for manufacturing a discontinuous weak sandwich structure surface according to claim 1 or 2, characterized in that: The fixed system chassis includes a rotating chassis, a chassis connecting cap, a damping pad, a fixed chassis, a platform connecting bolts and inner and outer disk connecting bolts. The fixed chassis is fixed to the platform by the platform connecting bolts, the rotating chassis is installed in the fixed chassis, and then the chassis connecting cap is fixed to the connection between the rotating chassis and the fixed chassis by the inner and outer disk connecting bolts.

7. The method for manufacturing a discontinuous weak sandwich structure surface according to claim 1 or 2, characterized in that: The weak interlayer thickness regulator comprises an upper weak interlayer thickness regulator and a lower weak interlayer thickness regulator; the upper weak interlayer thickness regulator and the lower weak interlayer thickness regulator are respectively fixed on the upper bracket of the weak interlayer manufacturing system and the base of the weak interlayer manufacturing system.

8. The method for manufacturing a discontinuous weak sandwich structure surface according to claim 1 or 2, characterized in that: The weak interlayer width regulator comprises a left weak interlayer width regulator and a right weak interlayer width regulator; the left weak interlayer width regulator is fixed on a left bracket of the weak interlayer manufacturing system, and the right weak interlayer width regulator is fixed on a right bracket of the weak interlayer manufacturing system.

9. The method for manufacturing a discontinuous weak sandwich structure surface according to claim 1 or 2, characterized in that: The outer frame of the weak interlayer production system includes a weak interlayer production system base, a left bracket of the weak interlayer production system, a right bracket of the weak interlayer production system, an upper bracket of the weak interlayer production system, a fixed foot seat of the weak interlayer production system and fixed bolts of the weak interlayer production system. The base of the weak interlayer production system is installed between the left bracket of the weak interlayer production system and the right bracket of the weak interlayer production system, and the base of the weak interlayer production system is fixed to the rear section of the platform by four sets of fixed bolts and fixed feet of the weak interlayer production system.

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