CN107607380B - Manufacturing die for multi-angle interlayer-containing rock mass reinforcement test - Google Patents
Manufacturing die for multi-angle interlayer-containing rock mass reinforcement test Download PDFInfo
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- CN107607380B CN107607380B CN201711131606.9A CN201711131606A CN107607380B CN 107607380 B CN107607380 B CN 107607380B CN 201711131606 A CN201711131606 A CN 201711131606A CN 107607380 B CN107607380 B CN 107607380B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
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Abstract
The invention relates to a manufacturing die for multi-angle interlayer-containing rock mass reinforcement test, which effectively solves the problems that the multi-angle interlayer-containing rock mass and anchor rods improve the overall stability of components in the reinforcement technology, have higher strength and deformability and save cost and materials, a rectangular groove body is formed by arranging front, back, left and right steel plates on a bottom plate, a plurality of pairs of notches are arranged at the upper end of the rectangular groove body, baffle plates extending into the rectangular groove body are arranged in any pair of notches, a pair of reserved anchor rod holes are arranged on the side wall of the rectangular groove body, PVC pipes are arranged in any pair of reserved anchor rod holes, and the middle parts of the PVC pipes penetrate through the center holes of the baffle plates.
Description
Technical Field
The invention relates to the technical field of geotechnical mechanical tests, in particular to a manufacturing die for a multi-angle interlayer-containing rock reinforcement test.
Background
In geotechnical engineering and underground engineering, the characteristics of low strength, poor self-bearing capacity, difficult control of stability and the like due to the existence of surrounding rock weakness and crushing are one of important factors influencing rock stability and building safety. The failure of many engineering projects is mostly caused by insufficient strength of the weak interlayer or the weak structural face of the rock mass. However, in actual work, the development trend and the damage form of the peripheral cracks of the rock mass cannot be directly observed. The method is characterized in that the rock breaking characteristics and the breaking modes are simulated and analyzed through experiments, and the development trend and influence of microcracks in the rock are explored. Powerful data analysis is provided for the tunneling blasting process, roadway surrounding rock and subway tunnel excavation support.
The anchor rod is one of main reinforcement supporting members of underground engineering and rock slopes, is a reinforcement technology which has small disturbance to the original rock, is safe and reliable, is economical and effective, can improve the integrity of the rock mass, and is beneficial to exerting the self-bearing capacity of the rock mass medium. In engineering practice, people often take reinforcing measures to ensure reliable and safe operation of engineering, reinforcement experimental simulation is generally required to be carried out on samples and data acquired on site, but if the fields and the reinforcing effects are required to be more comprehensively and truly reflected, the application of the multi-angle interlayer-containing rock mass in reinforcing technology is further required to be further researched, so that how to design a manufacturing mold for multi-angle layered rock mass reinforcing test is a current urgent problem to be solved.
Disclosure of Invention
Aiming at the situation, the invention aims to provide the manufacturing die for the multi-angle interlayer-containing rock mass reinforcement test, which can effectively solve the problems that the multi-angle interlayer-containing rock mass and the anchor rod improve the overall stability of the component in the reinforcement technology, have higher strength and deformability and save cost and materials.
The technical scheme includes that a front steel plate, a rear steel plate and a left steel plate which are symmetrical to each other, a right steel plate which are symmetrical to each other are respectively and vertically arranged on a bottom plate to form a rectangular groove body with an opening at the upper part, a plurality of pairs of grooves are formed in the upper end face of the rectangular groove body, the central connecting line of each pair of grooves is in a straight line shape, each pair of grooves is formed by two grooves which are symmetrical to each other by taking the center of the upper opening of the rectangular groove body as a center point, a baffle plate with the lower end extending into the rectangular groove body and tightly clamped with the rectangular groove body is arranged in any pair of grooves, the baffle plate divides the inner space of the rectangular groove body into 2 chambers, a pair of reserved anchor holes are formed in the side wall of the rectangular groove body, the central connecting line of each pair of reserved anchor holes is in a straight line shape, each pair of reserved anchor holes is formed by two mutually symmetrical reserved anchor holes by taking the center of the rectangular groove body as the center point, a PVC pipe is arranged in a penetrating way in any pair of anchor holes in a reserved anchor hole, the reserved anchor hole is used for prefabrication in the pouring, and the middle of the anchor pipe penetrates through the center hole of the baffle plate when the prefabrication is finished.
The invention has better mechanical properties such as strength, rigidity and stability, and the pouring of the test piece can not cause the deformation of the test piece, thereby improving the integrity of the test piece.
Drawings
Fig. 1 is a perspective view of the structure of the present invention.
Fig. 2 is a top view of the structure of the present invention.
Fig. 3 is a structural perspective view of the baffle plate of the present invention.
Detailed Description
The following describes the embodiments of the present invention in detail with reference to the drawings.
The structure of the invention is that a front steel plate 1 and a rear steel plate 2 which are symmetrical with each other are respectively and vertically arranged on a bottom plate 5 and form a rectangular groove body with an opening at the upper part, a plurality of pairs of notches 6 are arranged on the upper end face of the rectangular groove body, the central connecting line of each pair of notches is in a straight line, each pair of notches is formed by two notches which are symmetrical with each other by taking the center of the upper opening part of the rectangular groove body as a center point, a baffle 7 with the lower end extending into the rectangular groove body and tightly clamped with the rectangular groove body is arranged in any pair of notches, the baffle divides the inner space of the rectangular groove body into 2 chambers, a pair of reserved anchor rod holes 8 are arranged on the side wall of the rectangular groove body, the central connecting line of each pair of reserved anchor rod holes is in a straight line, each pair of reserved anchor rod holes is formed by two reserved anchor rod holes which are symmetrical with each other by taking the center of the rectangular groove body as a center point, a PVC pipe 9 is arranged in a penetrating way in any pair of reserved holes, and is convenient for the anchor rod pipe 11 penetrating through the center of the anchor rod when pouring is finished.
The front steel plate 1, the rear steel plate 2, the left steel plate 3 and the right steel plate 4 are fixed on the bottom plate through bolts 10, so that after the rock-soil sample is cast and molded, the die is disassembled, and the sample is taken out.
The baffle 7 is a flat plate structure with long upper part and short lower part, which is formed by combining an upper plate with the upper part of the lower plate into a whole, the length of the upper plate is larger than that of the lower plate, two ends of the upper plate respectively extend out of two ends of the upper part of the lower plate, a central hole 11 is arranged on the lower plate, two ends of the lower plate are contacted with the inner wall of the rectangular groove body, the bottom of the lower plate is contacted with the upper surface of the bottom plate of the rectangular groove body, and the two ends of the upper plate are clamped in any pair of notches to extend out of the notches.
The reserved anchor rod holes 8 are 3 pairs, the included angles of the 3 pairs of reserved anchor rod holes and the baffle plate are sequentially distributed at intervals of 30 degrees along the clockwise direction, namely, the included angles of the 3 pairs of reserved anchor rod holes and the baffle plate are sequentially 30 degrees, 60 degrees and 90 degrees along the clockwise direction.
The two ends of the PVC pipe 9 respectively penetrate through any pair of reserved anchor rod holes to extend out of the rectangular groove body, so that the PVC pipe is convenient to pull out during pouring molding.
The length of the rectangular groove body is 300mm, the width of the rectangular groove body is 100mm, the height of the rectangular groove body is 100mm, and the peripheral wall thickness of the rectangular groove body is 10mm.
The thickness of the bottom plate 5 is 12mm.
The height and width of the notch 6 are 5mm.
The front steel plate 1 or the rear steel plate 2 has a length shorter than that of the left steel plate or the right steel plate.
Two pairs of notches are symmetrically formed on the front steel plate 1 and the rear steel plate 2, namely, the two notches on the front steel plate and the two notches on the rear steel plate are respectively in a symmetrical state with each other through the transverse center line of the upper opening of the rectangular groove body; the left steel plate and the right steel plate are symmetrically provided with 5 pairs of notches, namely, the 5 notches on the left steel plate and the 5 notches on the right steel plate are respectively in a symmetrical state with each other through the vertical center line of the upper opening part of the rectangular groove body.
The pairs of notches 6 are distributed at intervals of 15 degrees in sequence from the front steel plate to the right steel plate direction or from the rear steel plate to the left steel plate direction, and angles of 7 pairs of notches distributed from the front steel plate to the right steel plate direction or from the rear steel plate to the left steel plate direction are 0 degrees, 15 degrees, 30 degrees, 45 degrees, 60 degrees, 75 degrees and 90 degrees in sequence, and when the angles of the notches on the front steel plate or the rear steel plate are 0 degrees, the center line of the notches on the front steel plate or the rear steel plate is a top center line from the top center of the front steel plate to the top center of the rear steel plate.
The baffle 7 is clamped in any pair of notches, the top of the baffle is flush with the top of the rectangular groove body, the flatness of a casting sample is guaranteed, the upper plate of the baffle is 20-40mm longer than the lower plate, and the baffle is convenient to pull out when casting is completed.
The diameter of the reserved anchor rod hole 8 is 10mm.
The invention can be suitable for baffles and anchoring angles with different angles, so that test blocks (also called test pieces) with different shapes can be poured, the rock breaking process and the anchoring effect can be simulated by using an experimental method, and the rock breaking mechanism can be explored. Powerful data analysis is provided for slope management and underground engineering excavation supporting. The baffle is arranged on a pair of notches of the difference, the inner space of the rectangular groove body can be divided into 2 different chambers, the interlayer-containing rock bodies with different dip angles can be poured, the PVC pipes with different dip angles are inserted, and the anchoring effect of different anchoring angles (namely the included angles of the baffle and the PVC pipes or anchor rods) can be studied. According to the invention, the PVC pipe is inserted into the reserved anchor rod hole during pouring, the diameter of the PVC pipe is completely matched with that of the reserved anchor rod hole, and the PVC pipe is inserted into the reserved anchor rod hole before pouring to prevent slurry leakage during pouring. The square groove body can also be of an integral structure, the inclination angles of a plurality of pairs of notches are different, and a plurality of pairs of notches are respectively arranged on the steel plate in a gradient mode, and are related to the position of a baffle fixed in advance, the size, shape, space position and the like of a crack made of the baffle are strictly arranged according to test requirements, the phenomenon that the thickness and width of the crack become large due to pulling out the baffle, secondary cracks are generated around an original crack, and even the integral damage of a knot is caused is avoided. When the reserved anchor rod hole or the notch is not used, the plasticine is selected for blocking, so that slurry is prevented from flowing into and solidifying during pouring, and the reserved anchor rod hole or the notch is blocked to influence the next use.
In the present invention, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present invention.
The working process of the manufacturing mould for the multi-angle interlayer-containing rock mass reinforcement test is provided by the invention with the following description of the accompanying drawings.
When the anchor test is poured (taking the baffle inclination angle as 60 degrees as an example, the anchor angle is 30 degrees): the method comprises the steps of blocking redundant holes with plasticine before use, firstly fixing a front steel plate, a right steel plate, a rear steel plate and a left steel plate on a bottom plate by bolts in sequence, uniformly smearing diesel oil on the peripheries of inner walls of a baffle plate, a PVC pipe and a rectangular groove body to achieve a lubricating effect, conveniently demolding, inserting the baffle plate into a pair of notches with an angle of 60 degrees, simultaneously inserting the PVC pipe into a pair of reserved anchor rod holes with an included angle of 30 degrees with the baffle plate to achieve the purpose of reserving the anchor rod holes, pouring cement mortar of similar materials into the method, vibrating by a vibrating machine uniformly and manually tamping, cleaning and screwdrivers, after the slurry in the method is solidified and has a certain strength, drawing out the PVC pipe and drawing out the baffle plate after a period of standing, soaking into water for 24 hours, then drawing out part surfaces of the baffle plate by 45 degrees and washing by water, facilitating bonding of bonding materials, then filling cementing materials between layers or with small iron sheets into the cementing materials (namely a space left reserved after the baffle plate is drawn out), cleaning the cement mortar, lightly vibrating and filling the left cement mortar into the reserved anchor rod into the holes, and vibrating by a vibrating screw rod for 1X 4mm, and 4mm of the diameter of a sample is formed by a vibrating screw rod after the method is filled with two sides of the anchor rod, and the sample diameter is 1X 4mm is equal to 1 mm, and the diameter is equal to the diameter of a reserved anchor rod is filled with 1 mm, and a diameter is filled with a sample is filled with 1 mm and is filled with two 1 mm and a diameter and is filled with a sample is filled with two 1 mm and is filled with two 1 mm and is 4mm and is filled with a 4.
In summary, the invention provides a manufacturing mold for multi-angle interlayer-containing rock mass reinforcement test, which can form an experimental sample manufacturing mold with a prefabricated inclination angle similar to a layered rock mass, and can be repeatedly used to manufacture samples with different inclination angles and anchored samples with different anchoring angles, so that the same mold can be repeatedly used, and the manufacturing mold has the advantages of simple operation, convenient use, cost saving, convenient disassembly and cleaning, and material saving.
Finally, it should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the technical solution described in the above-mentioned embodiments may be modified or some technical features may be equivalently replaced, and these modifications or substitutions do not deviate from the spirit and scope of the technical solution of the embodiments of the present invention.
Claims (7)
1. The manufacturing mould for the multi-angle interlayer rock mass reinforcement test is characterized in that a plurality of pairs of notches (6) are arranged on the upper end face of the rectangular groove body, the notches (6) are distributed at intervals of 15 degrees in sequence from the front steel plate to the right steel plate or from the rear steel plate to the left steel plate, the angles of 7 pairs of notches distributed from the front steel plate to the right steel plate or from the rear steel plate to the left steel plate are 0 degrees, 15 degrees, 30 degrees, 45 degrees, 60 degrees, 75 degrees and 90 degrees in sequence, and when the angles of the notches on the front steel plate or the rear steel plate are 0 degrees, the center line of the notches on the front steel plate or the rear steel plate is the top center line of the front steel plate to the top center of the rear steel plate; the central line of every notch is sharp shape, every notch to the notch is by regard as the center of center point mutual symmetry's two notches to constitute, be equipped with baffle (7) that the lower extreme stretches into in the notch of arbitrary a pair of notch and the notch close block of notch of square together in the notch of many pairs, baffle (7) are by the upper plate combination of lower plate and lower plate upper portion as an organic whole and constitute the upper and lower short flat-plate structure, the length of upper plate is greater than the length of lower plate, the both ends of upper plate stretch out respectively outside the upper portion both ends of lower plate, have centre bore (11) on the lower plate, the both ends of lower plate and the inner wall contact of notch of square, the bottom of lower plate and the bottom plate upper surface contact of notch of square, the upper plate card stretches out the notch at arbitrary a pair of notch inner ends, baffle (7) cartridge is in the notch of arbitrary a pair of notch, the top of baffle and the top of square notch of notch, the upper plate of baffle is 20-40mm than lower plate length, the baffle cuts apart 2 inner space of cavity of notch of square notch, be equipped with the stock is the centre bore (9) of each flat-tube of each side wall of the stock of the mutual centre line is reserved for the stock that the two-shaped anchor rod is reserved hole of the anchor rod, the stock is formed by the centre bore of the centre line of two-hole is reserved for the anchor rod of the anchor rod to the anchor rod of the opposite each side wall of the anchor rod, the anchor rod is reserved.
2. The manufacturing die for the multi-angle interlayer-containing rock mass reinforcement test according to claim 1, wherein the front steel plate (1), the rear steel plate (2), the left steel plate (3) and the right steel plate (4) are fixed on a bottom plate through bolts (10); the length of the front steel plate (1) or the rear steel plate (2) is shorter than that of the left steel plate or the right steel plate.
3. The manufacturing die for multi-angle interlayer-containing rock mass reinforcement test according to claim 1, wherein the number of the reserved anchor holes (8) is 3, the included angles of the 3 pairs of reserved anchor holes and the baffle plate are sequentially distributed at intervals of 30 degrees in the clockwise direction, namely, the included angles of the 3 pairs of reserved anchor holes and the baffle plate are sequentially 30 degrees, 60 degrees and 90 degrees in the clockwise direction.
4. The manufacturing die for the multi-angle interlayer-containing rock mass reinforcement test according to claim 1, wherein two ends of the PVC pipe (9) respectively penetrate through any pair of reserved anchor rod holes and extend out of the rectangular groove body.
5. The manufacturing die for the multi-angle interlayer-containing rock mass reinforcement test according to claim 1, wherein the length of the rectangular groove body is 300mm, the width of the rectangular groove body is 100mm, the height of the rectangular groove body is 100mm, the peripheral wall thickness of the rectangular groove body is 10mm, and the thickness of the bottom plate (5) is 12mm.
6. The manufacturing die for the multi-angle interlayer-containing rock mass reinforcement test according to claim 1, wherein the height and the width of the notch (6) are 5mm; the diameter of the reserved anchor rod hole (8) is 10mm.
7. The manufacturing die for the multi-angle interlayer-containing rock mass reinforcement test according to claim 1, wherein two pairs of notches are symmetrically formed on the front steel plate (1) and the rear steel plate (2), namely, the two notches on the front steel plate and the two notches on the rear steel plate are respectively in a symmetrical state with each other by the transverse central line of the upper opening part of the rectangular groove body; the left steel plate and the right steel plate are symmetrically provided with 5 pairs of notches, namely, the 5 notches on the left steel plate and the 5 notches on the right steel plate are respectively in a symmetrical state with each other through the vertical center line of the upper opening part of the rectangular groove body.
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| CN201711131606.9A CN107607380B (en) | 2017-11-15 | 2017-11-15 | Manufacturing die for multi-angle interlayer-containing rock mass reinforcement test |
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| CN201711131606.9A CN107607380B (en) | 2017-11-15 | 2017-11-15 | Manufacturing die for multi-angle interlayer-containing rock mass reinforcement test |
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| CN107607380B true CN107607380B (en) | 2023-08-25 |
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| CN108333008A (en) * | 2018-01-25 | 2018-07-27 | 山东大学 | A kind of experimental rig and method for making more cracks and regulating and controlling crack arrangement mode |
| CN108663244B (en) * | 2018-04-03 | 2019-11-29 | 中国科学院武汉岩土力学研究所 | A kind of accurate method for making sample of inclination bolted discontinuous rock and bolted discontinuous rock |
| CN109342163B (en) * | 2018-10-16 | 2023-11-21 | 浙江科技学院 | Mould for making structural surface model containing weak interlayer |
| CN109507024B (en) * | 2018-10-16 | 2022-05-17 | 浙江科技学院 | Method for manufacturing and direct shear testing of structural surface containing soft interlayer |
| CN111157315A (en) * | 2020-01-17 | 2020-05-15 | 三峡大学 | Device for simulating rock core pie phenomenon under isotropic schistosity angle and using method |
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