CN106959229B - Irregular raw rock structural surface sample manufacturing die meeting indoor direct shear test requirements - Google Patents
Irregular raw rock structural surface sample manufacturing die meeting indoor direct shear test requirements Download PDFInfo
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- CN106959229B CN106959229B CN201710128357.1A CN201710128357A CN106959229B CN 106959229 B CN106959229 B CN 106959229B CN 201710128357 A CN201710128357 A CN 201710128357A CN 106959229 B CN106959229 B CN 106959229B
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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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
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Abstract
The manufacturing die for the irregular original rock structural surface sample meets the requirements of an indoor direct shear test and comprises a die lower disc, a die middle disc and a die upper disc, wherein the die lower disc comprises a die lower disc L-shaped side plate, a die lower disc L-shaped side plate connecting piece, a bottom plate, a side plate connecting piece and a bottom plate; the mould middle plate comprises a first mould middle plate connecting plate, a second mould middle plate connecting plate, a mould middle plate side plate connecting piece and a mould upper plate positioning connecting piece, and the original rock fixing piece stretches into the mould middle plate; the mould upper disc comprises a mould upper disc L-shaped side plate and a mould upper disc L-shaped side plate connecting piece, a cavity of a mould lower disc for filling a rock sample is filled with a lower disc filling layer, an irregular raw rock sample is positioned in a mould middle disc, a structural surface protection layer is filled in the mould middle disc, and the cavity of the mould upper disc is filled with the rock sample upper disc filling layer. The invention effectively prepares the irregular original rock structural surface sample meeting the requirements of direct shear test, and has the advantages of simplicity, easy implementation, convenient operation, low cost, easy disassembly and convenient test research.
Description
Technical Field
The invention relates to an irregular original rock structural surface sample manufacturing die meeting the indoor direct shear test requirement, which is suitable for test research of the shear strength characteristics of the irregular original rock structural surface and belongs to the technical field of engineering.
Background
The rock structural surface is a fracture surface and a fracture zone formed by various mechanical actions such as faults, weak layers, joints, weak plates, weak zones and the like in the rock. Because of the great difficulty of sampling the structural surface of the original rock, high cost and long period, the structural surface direct shear test often adopts a model structural surface to replace the structural surface of the original rock for shear strength test research. The model structural surface is used for manufacturing a sample similar to the original rock structural surface for a direct shear test according to the mechanical properties, the surface morphology and other factors of the original rock structural surface. Due to the complexity of rock causes and the uncertainty of the surface morphology of the original rock structural surface, a certain gap exists between a model structural surface sample and an original rock structural surface sample which are simulated and manufactured through similar materials according to a similar ratio principle, and the inherent physical and mechanical characteristics of the natural original rock structural surface are difficult to reflect.
Direct shear tests require that the external shape of the original rock face sample be regular, typically square face samples. The original rock structural surface is generally stored in a rock body, and a regular structural surface sample meeting the requirements of a direct shear test can be manufactured only through links such as on-site sample selection, cutting, conveying and the like, so that the cost is high, the construction period is long, and the difficulty is high. However, due to the complexity of the depth, the occurrence and the position of the structural surface, etc., it is often difficult to obtain a structural surface sample with a regular standard size, compared with the original rock structural surface with an irregular shape (such as a polygon, etc.) of the exposed surface, the original rock structural surface with an irregular shape is more easily obtained on site, and the direct shear test of the original rock structural surface with an irregular shape is difficult to be directly carried out, so that the external shape is required to be processed. In order to better test the shear strength characteristics of the original rock structural surface, the original rock structural surface with irregular shape needs to be converted into a structural surface sample with standard size and regular shape.
Disclosure of Invention
In order to solve the defects that the sample preparation of the irregular raw rock structural surface is difficult, the direct shear test cannot be directly carried out, the resource utilization rate is low and the like, the invention provides the preparation mould for effectively preparing the irregular raw rock structural surface sample meeting the requirements of the direct shear test, and the preparation mould for preparing the irregular raw rock structural surface sample meeting the requirements of the indoor direct shear test is simple and easy to operate, convenient to operate, low in cost, easy to detach and convenient to test and research.
The technical scheme adopted for solving the technical problems is as follows:
the manufacturing mould comprises a mould lower disc, a mould middle disc and a mould upper disc, wherein the mould lower disc comprises a mould lower disc L-shaped side plate, a mould lower disc L-shaped side plate connecting piece, a bottom plate, a side plate connecting piece and a bottom plate, the two mould lower disc L-shaped side plates are connected through the mould lower disc L-shaped side plate connecting piece, and the mould lower disc L-shaped side plate is connected with the bottom plate through the bottom plate and the side plate connecting piece;
the middle mold plate comprises a first middle mold plate connecting plate, a second middle mold plate connecting plate, a middle mold plate side plate connecting piece and a mold upper plate positioning connecting piece, wherein the first middle mold plate connecting plate and the second middle mold plate connecting plate are respectively arranged at opposite sides, and the first middle mold plate connecting plate is connected with the second middle mold plate connecting plate through the middle mold plate side plate connecting piece to form a top-free and bottom-free square box; the upper disc positioning connecting piece of the die is positioned at the center of four sides of the middle disc of the die, and the lower ends of the four sides of the middle disc of the die are connected with the lower disc of the die through hinges; the first die middle plate connecting plate and the second die middle plate connecting plate are respectively provided with a raw rock fixing piece, the raw rock fixing pieces extend into the die middle plate, and the positioning ends of the four raw rock fixing pieces respectively position the four directions of the irregular raw rock structural surface sample and fix the irregular raw rock sample at the center position of the die;
the upper die plate comprises an upper die plate L-shaped side plate and an upper die plate L-shaped side plate connecting piece, and the two upper die plate L-shaped side plates are connected through the upper die plate L-shaped side plate connecting piece;
the cavity of the mold lower disc is filled with a lower disc filling layer of a rock sample, the irregular original rock structural surface sample is positioned on a mold middle disc, the mold middle disc is filled with a structural surface protection layer, and the cavity of the mold upper disc is filled with a rock sample upper disc filling layer; the rock sample upper disc filling layer, the structural surface protection layer and the rock sample lower disc filling layer form a regular-appearance original rock structural surface sample which meets the test requirements with an irregular original rock sample.
Further, former rock mounting include stiff end, threaded rod, nut and tip rubber pad, the stiff end is located the tip of former rock mounting, acts on irregular former rock sample through the tip rubber pad and makes stiff end and irregular former rock sample in close contact with, the one end and the stiff end of threaded rod are connected, the other end of threaded rod passes the mould center plate, changes the length of threaded rod in the inside of mould through the nut and makes irregular former rock sample be located the central point of mould.
Still further, bottom plate and curb plate connecting piece include connecting piece, threaded rod, nut and engaging lug, connecting piece and engaging lug are as an organic whole, threaded rod one end and connecting piece rotationally are connected.
Still further, mould lower wall L type curb plate connecting piece and mould upper wall L type curb plate connecting piece all include connecting piece, threaded rod and nut, the connecting piece is as an organic whole with the engaging lug, threaded rod one end is connected with the connecting piece, the threaded rod other end is connected with the nut.
The rock sample lower disc filling layer is cast-in-situ by taking fine stone concrete as a raw material, and is positioned at the lower part of the structural surface protection layer, and the lower part of the irregular original rock sample 1 is positioned in the rock sample lower disc filling layer;
the structural surface protection layer is positioned between the rock sample lower disc filling layer and the rock sample upper disc filling layer, and is filled with wood chips;
the rock sample upper disc filling layer is cast-in-situ by taking fine stone concrete as a raw material, and is positioned at the upper part of the structural surface protective layer, and the upper part of the irregular raw rock sample is positioned in the rock sample upper disc filling layer.
The beneficial effects of the invention are mainly shown in the following steps: the original rock structural surface with standard size and shape can be manufactured.
The manufacturing die and the manufacturing method have the following advantages:
1. the manufacturing die and the sample manufacturing method have wide application range and are suitable for manufacturing the original rock structural surface with various irregular shapes and nonstandard sizes.
2. The manufacturing mould and the sample manufacturing method overcome the defect that the direct shear test cannot be carried out on the original rock structural surface due to irregular shape, and can manufacture the original rock structural surface sample with standard shape.
3. The manufacturing die and the manufacturing method are simple and feasible, convenient to operate, low in price, easy to disassemble and convenient for experimental study.
4. The operation method is simple and convenient, and the test personnel can finish the process after familiar with the manufacturing process.
5. The standard-shape original rock structural surface sample manufactured by the die is used for direct shear test, and the sheared object is an undamaged original rock structural surface, so that the property of the original rock structural surface can be directly reflected.
Drawings
FIG. 1 is a diagram of a method for manufacturing a regular-shape primary rock structural surface;
FIG. 2 is a cross-sectional view of 1-1;
FIG. 3 is a detail view of a raw rock anchor;
FIG. 4 is a top view of the bottom wall of the mold;
FIG. 5 is a detail view of the lower L-shaped side plate of the mold;
FIG. 6 is a top view of the bottom plate of the mold bottom plate;
FIG. 7 is a three-dimensional view of the bottom wall of the mold;
FIG. 8 is a cross-sectional view of the bottom wall of the mold;
FIG. 9 is a top view of a tray in a mold;
FIG. 10 is an exploded side panel detail of a tray in a mold, wherein (a) is a schematic view of a tray web in a first mold and (b) is a schematic view of a tray web in a second mold;
FIG. 11 is a top plan view of the upper tray of the mold;
FIG. 12 is a detail view of the upper plate L-shaped side plate of the mold;
wherein: the method comprises the steps of 1, 2, 3, 31, 32, 321, 322, 323, 33, 331, 332, 333, 334, 34, 4, 41, 42, 43, 44, 5, 6, 61, 62, 63, 7, 71, 72, 8, 9, 10, and 10.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1 to 12, a mold for manufacturing an irregular original rock structural surface sample meeting the requirements of a direct shear test comprises a mold bottom plate 3, a mold bottom plate L-shaped side plate 31, a mold bottom plate L-shaped side plate connector 32, a mold bottom plate and side plate connector 33, a connector 331, a threaded rod 332, a screw cap 333, a connecting lug 334, a bottom plate 34, a mold middle plate 4, a mold middle plate connecting plate 41, a mold middle plate connecting plate 42, a mold middle plate side plate connector 43, a mold upper plate positioning connector 44, a hinge 5, an original rock fixing member 6, a fixing end 61, a threaded rod 62, a screw cap 63, an end rubber pad, a mold upper plate 7, a mold upper plate L-shaped side plate 71, a mold upper plate L-shaped side plate connector 72, a rock sample bottom plate filling layer 8, a structural surface protection layer 9 and a rock sample upper plate filling layer 10.
The irregular original rock sample 1 comprises a structural surface 2. The structural surface 2 is an un-penetrated or penetrated structural surface in the irregular original rock structural surface sample 1. The irregular original rock structural surface sample 1 is not limited in shape and size, and is fixed at the center position of the middle disc 4 of the die, namely, the center position inside the die by an original rock fixing piece 6.
The structural surface 2 is a weak part in the irregular original rock structural surface sample 1. The structural surface 2 exists in the irregular original rock structural surface sample 1, and the number of the structural surfaces 2 is not determined and is determined by the nature of the irregular original rock sample 1.
The lower die plate 3 comprises a lower die plate L-shaped side plate 31, a lower die plate L-shaped side plate connecting piece 32, a bottom plate and side plate connecting piece 33 and a bottom plate 34. The side plates of the mold bottom plate 3 are composed of two L-shaped side plates 31, and the two L-shaped side plates are connected through a mold bottom plate L-shaped side plate connecting piece 32. The mold bottom L-shaped side plate connector 32 comprises a connector 321, a threaded rod 322 and a nut 323. The connector 321 and the connecting lugs 334 should be integrated to improve the overall stability of the bottom panel and side panel connector 32. One end of the threaded rod 322 is connected with the connecting piece 321, and the other end is connected with the nut 323. The end of the threaded rod 322 connected to the connecting member 321 is rotatable, and the end connected to the nut 323 is engaged with the screw. The bottom plate 34 and the side plate are connected through a bottom plate and side plate connecting piece 33. The bottom and side plate connector 33 includes a connector 331, a threaded rod 332, a nut 333, and a connecting lug 334. The connector 331 should be integral with the connector lug 334 to improve the overall stability of the bottom and side panel connector 33. The threaded rod 332 has one end connected to the connector 331 and the other end connected to the nut 333. The end of the threaded rod 332 connected to the connector 331 is rotatable, and the end connected to the nut 333 is a nut engaged with the screw thread 333. The lower die plate L-shaped side plate 31, the lower die plate L-shaped side plate connecting piece 32, the bottom plate and the side plate connecting piece 33 are integrated.
The mold middle plate 4 comprises a mold middle plate connecting plate 41, a mold middle plate connecting plate 42, a mold middle plate side plate connecting piece 43 and a mold upper plate positioning connecting piece 44. The upper end of the middle mold plate 4 is connected with the upper mold plate 3 through a positioning connector 44 of the upper mold plate, and the lower end of the middle mold plate 4 is connected with the lower mold plate 3 through a hinge 5. The die center plate side plate connecting piece 43, the die center plate connecting plate 41 and the die center plate connecting plate 42 are integrated. The die center plate 4 is a top-free and bottom-free square box composed of four side plates, the four side plates comprise two die center plate connecting plates 41 and two die center plate connecting plates 42, and the die center plate connecting plates 41 and the die center plate connecting plates 42 are connected through die center plate side plate connecting pieces 43. The upper die plate positioning connector 44 is located at the center of four sides of the middle die plate 4, and is preferably welded with the middle die plate. The mold top plate positioning connector 44 can well connect the mold top plate 7 when it is placed on the mold middle plate 4.
The hinge 5 is used for connecting the lower die plate 3 with the middle die plate 4. The mold middle plate 4 is connected with the mold lower plate 3 through a hinge 5, so that the mold can be disassembled more conveniently.
The original rock fixing piece 6 comprises a fixing end 61, a threaded rod 62, a nut 63 and an end rubber pad. The irregular original rock sample 1 is mainly fixed at the center of the die. The fixed end 61 is located at the end of the original rock fixing member 6, and acts on the irregular original rock sample 1 through an end rubber pad, so that the fixed end 61 is in close contact with the irregular original rock sample 1. One end of the threaded rod 62 is connected with the fixed end 61, and the threaded rod and the fixed end are integrated to increase the integrity of the original rock fixing piece 6; the other end passes through the die center plate 4, and the length of the threaded rod 62 inside the die is changed by the nut 63 so that the irregular original rock sample 1 is located at the center of the die. Firstly, placing an irregular original rock sample 1 at the center of a disc 4 in a mould, then selecting a threaded rod 62 with proper length, placing an end rubber pad at the end of the threaded rod 62 so as to enable the end of the threaded rod 62 to be well connected with the irregular original rock sample 1, finally, penetrating the threaded rod 62 through four side plates of the disc 4 in the mould, rotating a nut 63 to the proper position of the threaded rod 62, and adjusting the length of the threaded rod 62 in the mould through rotating the nut 63 to fix the position of the irregular original rock sample 1 so as to enable the irregular original rock sample to be at the center of the disc 4 in the mould.
The upper die plate 7 comprises an upper die plate L-shaped side plate 71 and an upper die plate L-shaped side plate connecting piece 72. The upper die plate L-shaped side plate connecting member 72 should be integral with the upper die plate L-shaped side plate 71. The lower end of the upper die plate 7 is connected with the middle die plate 4 through an upper die plate positioning connecting piece 44. The side plates of the upper die plate 7 are composed of two L-shaped side plates 71, the two L-shaped side plates are connected through an upper die plate L-shaped side plate connecting piece 72, and the upper die plate L-shaped side plate connecting piece 72 comprises a connecting piece, a threaded rod and a nut, and the connecting relation is the same as that of the lower die plate L-shaped side plate connecting piece 32.
The rock sample lower disc filling layer 8 is usually made of fine stone concrete by cast-in-situ and is positioned at the lower part of the structural surface protection layer 9, the lower part of the irregular original rock sample 1 is positioned in the lower part, and the outer shape of the lower part is the same as the shape of a die.
The structural surface protection layer 9 is positioned between the rock sample lower disc filling layer 8 and the rock sample upper disc filling layer 10, in the process of preparing a sample, the structural surface protection layer 9 is generally filled with unbonded materials such as broken wood chips, and the like, and the rock sample is taken out after being prepared, so that the sheared object is the original rock structural surface 2 instead of the structural surface protection layer 9 in the direct shearing test.
The rock sample upper disc filling layer 10 is usually cast-in-situ by taking fine stone concrete as a raw material, and is positioned at the upper part of the structural surface protection layer 9, and the upper part of the irregular original rock sample 1 is positioned therein. The rock sample upper disc filling layer 10, the structural surface protection layer 9, the rock sample lower disc filling layer 8 and the irregular raw rock sample 1 form a regular-appearance raw rock structural surface sample meeting test requirements.
The manufacturing method of the irregular-shape original rock structural surface meeting the test requirements is realized by the manufacturing die of the embodiment, and comprises the following steps:
1) The mold dimensions are selected. And selecting a mould with a corresponding size according to the shape and the size of the irregular original rock structural surface sample obtained on site according to the indoor direct shear test requirement.
2) And assembling the lower die plate 3. The two L-shaped side plates 31 are first connected by a die bottom L-shaped side plate connector 32, and then the connected side plates are connected by a die bottom plate and side plate connector 33 to a die bottom plate 34.
3) The mold middle tray 4 is assembled. The middle die plate connecting plate 41 and the lower die plate side plates are firstly arranged in the same vertical plane through rotation, then the middle die plate connecting plate 42 is matched with the middle die plate connecting plate 41 through rotation, and the four side plates of the middle die plate are firmly connected through the middle die plate side plate connecting pieces 43.
4) The mold upper plate 7 is assembled. The two L-shaped side plates 71 are first connected by the upper plate L-shaped side plate connector 72 of the die, and finally a square box without bottom and top is formed.
5) Irregular original sample 1 was fixed. Firstly, placing an irregular original rock sample 1 at the center of a disc 4 in a mould, then selecting a threaded rod 62 with proper length, placing an end rubber pad at the end of the threaded rod 62 so as to enable the end of the threaded rod 62 to be well connected with the irregular original rock sample 1, finally, penetrating the threaded rod 62 through four side plates of the disc 4 in the mould, rotating a nut 63 to the proper position of the threaded rod 62, and adjusting the length of the threaded rod 62 in the mould through rotating the nut 63 to fix the position of the irregular original rock sample 1 so as to enable the irregular original rock sample to be at the center of the disc 4 in the mould. 6) According to the actual condition, the cast-in-situ material of filling layer of upper and lower disk of rock sample is selected (the invention uses fine stone to mix
Concrete for example) and then begins to make the rock sample lower disc filling layer 8.
7) And pouring concrete in the lower disc of the die. Concrete is poured into the lower mold plate 3, the height of the concrete is consistent with the upper surface of the lower mold plate 3, a poured sample is placed on a vibrating table to vibrate so as to ensure the discharge of bubbles, and a poured filling layer is used as a rock sample lower plate filling layer 8.
8) After the rock sample lower disc filling layer 8 reaches 80% of the test strength, the upper die disc 7 is connected with the middle die disc 4 through the upper die disc positioning connecting piece 44, and then the middle die disc 4 is filled with a plurality of loose materials (wood chips are taken as an example in the invention) to form the structural surface protection layer 9.
9) And pouring concrete in the upper plate of the die. Pouring concrete into the upper mould disc 7, placing the poured sample and the mould on a vibrating table for vibrating to ensure the discharge of bubbles, and scraping the surface of the sample after the vibrating is finished, wherein the poured filling layer is the upper rock sample disc filling layer 10.
10 Mold disassembly. After the poured sample is completely molded, the upper die disc 7 is removed through the upper die disc L-shaped side plate connecting piece 72; then the middle die plate 4 is removed, when the middle die plate 4 is removed, the original rock fixing piece 6 is removed firstly, and then the connection between the middle die plate connecting plate 41 and the middle die plate connecting plate 42 is removed through the middle die plate side plate connecting piece 43; finally, the mold bottom plate 3 is removed, when the mold bottom plate 3 is removed, the connection between the bottom plate 34 and the side plate of the mold bottom plate is removed through the connecting piece 33 of the bottom plate and the side plate, and then the mold bottom plate is removed
The L-shaped side plate connectors 32 remove the connection between the mold bottom plate side plates.
11 Specimen maintenance. And (3) placing the sample to be dismantled in a constant-temperature and constant-humidity curing chamber for curing until the curing age is reached, and performing an indoor direct shear test after sampling.
Claims (5)
1. The utility model provides a accord with irregular former rock structure face sample preparation mould of indoor direct shear test requirement which characterized in that: the manufacturing die comprises a die lower disc, a die middle disc and a die upper disc, wherein the die lower disc comprises a die lower disc L-shaped side plate, a die lower disc L-shaped side plate connecting piece, a bottom plate and side plate connecting pieces and a bottom plate, the two die lower disc L-shaped side plates are connected through the die lower disc L-shaped side plate connecting piece, and the die lower disc L-shaped side plate is connected with the bottom plate through the bottom plate and side plate connecting piece;
the middle mold plate comprises a first middle mold plate connecting plate, a second middle mold plate connecting plate, a middle mold plate side plate connecting piece and a mold upper plate positioning connecting piece, wherein the first middle mold plate connecting plate and the second middle mold plate connecting plate are respectively arranged at opposite sides, and the first middle mold plate connecting plate is connected with the second middle mold plate connecting plate through the middle mold plate side plate connecting piece to form a top-free and bottom-free square box; the upper disc positioning connecting piece of the die is positioned at the center of four sides of the middle disc of the die, and the lower ends of the four sides of the middle disc of the die are connected with the lower disc of the die through hinges; the first die middle plate connecting plate and the second die middle plate connecting plate are respectively provided with a raw rock fixing piece, the raw rock fixing pieces extend into the die middle plate, and the positioning ends of the four raw rock fixing pieces respectively position the four directions of the irregular raw rock structural surface sample and fix the irregular raw rock sample at the center position of the die;
the upper die plate comprises an upper die plate L-shaped side plate and an upper die plate L-shaped side plate connecting piece, and the two upper die plate L-shaped side plates are connected through the upper die plate L-shaped side plate connecting piece;
the cavity of the mold lower disc is filled with a lower disc filling layer of a rock sample, the irregular original rock structural surface sample is positioned on a mold middle disc, the mold middle disc is filled with a structural surface protection layer, and the cavity of the mold upper disc is filled with a rock sample upper disc filling layer; the rock sample upper disc filling layer, the structural surface protection layer and the rock sample lower disc filling layer form a regular-appearance original rock structural surface sample which meets the test requirements with an irregular original rock sample.
2. The mold for manufacturing the irregular original rock structural surface sample meeting the indoor direct shear test requirement as set forth in claim 1, wherein: the former rock mounting include stiff end, threaded rod, nut and tip rubber pad, the stiff end is located the tip of former rock mounting, acts on irregular former rock sample through the tip rubber pad and makes stiff end and irregular former rock sample in close contact with, the one end and the stiff end of threaded rod are connected, the other end of threaded rod passes the mould center plate, changes the length of threaded rod in the inside messenger's irregular former rock sample of mould through the nut and is located the central point of mould.
3. The mold for manufacturing the irregular original rock structural surface sample meeting the indoor direct shear test requirement according to claim 1 or 2, wherein the mold comprises the following components: the bottom plate and curb plate connecting piece include connecting piece, threaded rod, nut and engaging lug, connecting piece and engaging lug are as an organic whole, threaded rod one end and connecting piece rotationally are connected.
4. The mold for manufacturing the irregular original rock structural surface sample meeting the indoor direct shear test requirement according to claim 1 or 2, wherein the mold comprises the following components: the die lower disc L-shaped side plate connecting piece and the die upper disc L-shaped side plate connecting piece comprise connecting pieces, threaded rods and nuts, the connecting pieces and the connecting lugs are integrated, one end of each threaded rod is connected with the connecting piece, and the other end of each threaded rod is connected with the corresponding nut.
5. The mold for manufacturing the irregular original rock structural surface sample meeting the indoor direct shear test requirement according to claim 1 or 2, wherein the mold comprises the following components: the rock sample lower disc filling layer is cast-in-situ by taking fine stone concrete as a raw material, and is positioned at the lower part of the structural surface protective layer, and the lower part of the irregular original rock sample is positioned in the rock sample lower disc filling layer;
the structural surface protection layer is positioned between the rock sample lower disc filling layer and the rock sample upper disc filling layer, and is filled with wood chips;
the rock sample upper disc filling layer is cast-in-situ by taking fine stone concrete as a raw material, and is positioned at the upper part of the structural surface protective layer, and the upper part of the irregular raw rock sample is positioned in the rock sample upper disc filling layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710128357.1A CN106959229B (en) | 2017-03-06 | 2017-03-06 | Irregular raw rock structural surface sample manufacturing die meeting indoor direct shear test requirements |
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| CN201710128357.1A CN106959229B (en) | 2017-03-06 | 2017-03-06 | Irregular raw rock structural surface sample manufacturing die meeting indoor direct shear test requirements |
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| CN209432568U (en) * | 2018-10-16 | 2019-09-24 | 浙江科技学院 | Containing weak intercalated layer and thickness is adjustable and the structural plane model of rigid constraint makes mold |
| CN109916696A (en) * | 2019-04-04 | 2019-06-21 | 东北大学 | A kind of test specimen production mold of easy irregular rock direct shear test |
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| US4715212A (en) * | 1986-04-24 | 1987-12-29 | Jenike & Johanson, Inc. | Bulk solids property tester |
| CN101726435B (en) * | 2009-12-07 | 2011-08-24 | 浙江科技学院 | Manufacturing mold of structural surface model in direct shear test |
| CN104359770B (en) * | 2014-10-08 | 2016-09-14 | 绍兴文理学院 | Rock structural face direct shear apparatus plane shear head corollary apparatus and direct shear test method for circular configuration interview sample |
| CN104406833B (en) * | 2014-11-26 | 2016-11-16 | 中国海洋石油总公司 | The mould that irregular ROCK MASS JOINT face shearing test is specimen prefabricated |
| CN104764643A (en) * | 2015-04-08 | 2015-07-08 | 中国科学院武汉岩土力学研究所 | Method for fabricating coupling shear specimen containing natural structure surface |
| CN205426600U (en) * | 2015-11-04 | 2016-08-03 | 六盘水师范学院 | Irregular rock specimen direct shear test's test piece mold processing |
| CN205384196U (en) * | 2016-03-11 | 2016-07-13 | 大连理工大学 | A multi -functional shear box for similar material structure face direct shear test |
| CN105738208B (en) * | 2016-04-25 | 2018-10-23 | 东北大学 | Test the device and method of rock sample mechanical property under rubble passive bound |
| CN106370498B (en) * | 2016-12-05 | 2023-08-11 | 山东科技大学 | Adjustable die for preparing crack-containing rock sample and use method thereof |
| CN206671017U (en) * | 2017-03-06 | 2017-11-24 | 浙江科技学院 | Meet the making mould of the irregular protolith structural fece sample of indoor direct shear test requirement |
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