CN104865108A - Sample production apparatus suitable for jointed rock direct shear test, sample production and shearing apparatus, and sample production and shearing test method - Google Patents
Sample production apparatus suitable for jointed rock direct shear test, sample production and shearing apparatus, and sample production and shearing test method Download PDFInfo
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- CN104865108A CN104865108A CN201510016563.4A CN201510016563A CN104865108A CN 104865108 A CN104865108 A CN 104865108A CN 201510016563 A CN201510016563 A CN 201510016563A CN 104865108 A CN104865108 A CN 104865108A
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Abstract
The invention provides a sample production apparatus suitable for jointed rock direct shear test. The apparatus comprises a sample production assembly and a joint molding assembly, wherein the joint molding assembly is fixed through upper and lower positioning members. The invention also provides a sample production and shearing apparatus. A direct shearing device conversion assembly is arranged on the basis of the sample production apparatus, the joint molding assembly is dismounted from a model molded through a die of the sample production apparatus, the conversion assembly is fixedly arranged to form a shear box, and the shear box is used for direct shear test. The invention also provides a method for carrying out sample production and direct shear test by using the sample production and shearing apparatus. The problems of change of the jointing shape in the molding process and difficult formation of multiple joints in the model are well solved, and the apparatuses realize direct shear test without removing the sample production assembly from the model, and solve the problem of the influence of damages of demoldling and sample loading to the structure of the rock in the prior art on a test result.
Description
Technical field
The present invention relates to jointed rock mass direct shear test technical field, a kind of sample preparation device and the sample preparation shear that are applicable to jointed rock mass direct shear test are provided, the method using this sample preparation shear to carry out sample preparation and shear test is also provided.
Background technology
The engineering mechanics parameter of jointed rock mass is prerequisite and the basis of carrying out engineering design, and whether its value is rationally directly connected to economy and the security of engineering.
Rock mass is as the tectogenetic product of long-term geology, comprise a large amount of discontinuous construction to look like: tomography, joint, bedding, crack etc., the mutual meet of these structural planes defines specific rock mass structure, the architectural feature of the distinctive this complexity of rock mass, makes the determination of its engineering mechanics parameter become very difficult.
For a long time, how reasonably to determine that the engineering mechanics parameter of jointed rock mass is the focus that solves very well of rock mechanics circle extensive concern and failing and difficulties always.A large amount of engineering practice shows, the destruction main manifestations of jointed rock mass is that the inner joint of rock mass closes, opens and expand the destruction forming through slippage passage, and under this failure mode, the problem such as distortion, the destruction rule of development of jointed rock mass strength characteristics and joint and rock bridge does not still solve so far well.
Indoor direct shear test (abbreviation direct shear test) is the most effective means that solve the problem.Due to the difficulty of sampling, shop experiment research to be everlasting in rock-like materials examination body prefabricated joint to simulate jointed rock mass, in prior art in making simulation jointed rock mass, is adopt to insert certain thickness stalloy in a model and form and simulate joint structure.Such as, Reyes, Einstein (1991) in a model inserting thickness are the stalloy of 0.25mm, Liu Yuanming (2007) in a model inserting thickness 0.3mm stalloy simulation joint.The following aspects problem is mainly there is in prior art in making jointed rock mass model:
(1) mould of prefabricated jointed rock mass lacks joint locating device, and joint geometric configuration may be caused in patternmaking process to change;
(2) prior art is not suitable for the making of more piece reason strata model;
(3) prior art needs to carry out the operation such as the demoulding, dress sample to jointed rock mass sample in process of the test, may cause damage, affect test findings to rock mass structure.
Summary of the invention
The object of the present invention is to provide a kind of sample preparation device being applicable to jointed rock mass direct shear test, it can ensure the precision of joint physical dimension, is applicable to the preparation of complicated jointed rock mass sample.
Another object of the present invention is to provide a kind of sample preparation shear being applicable to jointed rock mass direct shear test, it can ensure the precision of joint physical dimension, be applicable to the preparation of complicated jointed rock mass sample, this device can be converted into shear simultaneously, thus the impact that minimizing sample causes because of the demoulding, dress sample link.
Another object of the present invention is to provide the method using above-mentioned sample preparation shear to carry out sample preparation shear test.
The object of the present invention is achieved like this:
Be applicable to a sample preparation device for jointed rock mass direct shear test, it comprises a sample preparation assembly and a joint molding assembly,
This sample preparation assembly comprises a cylindrical shell, two sidewalls that this cylindrical shell is relative are baffle plate, each baffle plate is comprise two plate bodys or is a monoblock plate body, when comprising two plate bodys be, be solidified as a whole by arranging removable fixed sturcture between two plate bodys, gap between two plate bodys is parallel to the axis of described cylindrical shell and setting of mutually aliging, and this gap is sealed by seal;
This joint molding assembly comprises upper and lower two keepers and joint profiled member, and each described keeper is provided with location structure, described joint profiled member is fixed on two keepers and can extracts out by upper keeper; Between described joint molding assembly and described sample preparation assembly, removable fixed sturcture is set, make when joint molding assembly to combine with described sample preparation assembly be fixed as one time, described lower keeper is detachably fixed on the lower end of described cylindrical shell, the bottom surface of closed cylinder, described joint profiled member is placed in described cylindrical shell with being parallel to described tubular axis and corresponding with the described gap of two described sidewalls, described upper keeper is detachably fixed on the upper surface of described cylindrical shell, forms jointed rock mass mould.
Be applicable to a sample preparation shear for jointed rock mass direct shear test, it comprises a sample preparation assembly, a joint molding assembly and a straight shear device Transformation cassette,
This sample preparation assembly comprises a cylindrical shell, two sidewalls that this cylindrical shell is relative are baffle plate, each baffle plate comprises two plate bodys, be solidified as a whole by arranging removable fixed sturcture therebetween, gap between two plate bodys is parallel to the axis of described cylindrical shell and setting of mutually aliging, and this gap is sealed by seal;
This joint molding assembly comprises upper and lower two keepers and joint profiled member, and each described keeper is provided with location structure, described joint profiled member is fixed on two keepers and can extracts out by upper keeper; Between described joint molding assembly and described sample preparation assembly, removable fixed sturcture is set, make when joint molding assembly to combine with described sample preparation assembly be fixed as one time, described lower keeper is detachably fixed on the lower end of described cylindrical shell, the bottom surface of edge sealing cylindrical shell, described joint profiled member is placed in described cylindrical shell with being parallel to described tubular axis and corresponding with the described gap of two described sidewalls, described upper keeper is detachably fixed on the upper surface of described cylindrical shell, forms jointed rock mass mould;
This straight shear device Transformation cassette comprises two pairs of side plates, two pairs of side plates arrange removable fixed sturcture respectively and between the both sides end face of described cylindrical shell, make to form shear box after described side plate and described cylindrical shell being fixed by this removable fixed sturcture, the seam of often pair of side plate is corresponding with the gap on described cylindrical shell between two plate bodys.
Preferably, described cylindrical shell is quadrangular section, and it has four blocks of side plates to be fixedly connected with, and the pair of side plates be wherein oppositely arranged is, every block side plate is that an entire plate is formed, and form base plate, the another pair of side plates be oppositely arranged is described baffle plate.
The seal in the described gap between two plate bodys in described baffle plate can be fixed on the rubber blanket between two plate bodys, also can be the one one-tenth seam intermediate plate be folded between two plate bodys, this one-tenth seam intermediate plate and adjacent two plate bodys be solidified as a whole by the removable fixed sturcture arranged.
Preferably, the width in the described gap in described baffle plate between two plate bodys is 5-10mm.If this gap is narrow, carrying out in direct shear test, applying normal force, two plate bodys are easy in contact, and like this, applied pressure does not just have in effective rock test piece.If but this gap is wide, in direct shear test, shear surface is just not easy to ensure surface level, and forms inclined-plane and cut by.
The width of described joint profiled member is unsuitable narrow.Preferably, the width of this joint profiled member is not less than 1/4 of test specimen sheared length; Or, the ratio of width to height A1/L1 > 1/3 of upper location-plate.
Described removable fixed sturcture is bolt fastening structure.
Preferably, by the removable fixed sturcture that two of described baffle plate plate bodys and the seam of one-tenth therebetween intermediate plate are solidified as a whole be at least two screw rod stationary installations running through these two plate bodys and be folded in the one-tenth seam intermediate plate between two plate bodys.
Preferably, the lower keeper in the molding assembly of described joint is made up of at least two boards body, wherein one piece of plate body arranges described location structure, arranges removable fixed sturcture between the end face of each plate body and described cylindrical shell.And there is no fixed sturcture between each plate body.
A preferred version is, described lower keeper comprises three blocks of plates, wherein, what the two boards on limit was connected with the entire plate in quadrangular section cylindrical shell and its two ends respectively to be connected formation butt plate as the plate body of in baffle plate, middle plate is arranged the bar seam of fixing described joint profiled member, two plate bodys of the plate of this centre and the both sides, gap of baffle plate are connected.
In the molding assembly of described joint, described joint profiled member can be rectangular sheet, and the sheet material of also can be its shape of cross section be broken line type or sawtooth pattern, the location structure on described upper and lower keeper is that the bar mated with joint profiled member xsect stitches.
Described bar is sewn on described keeper and arranges several, to form multiple joint in simulation jointed rock mass.
Corresponding to the joint profiled member of described rectangular sheet, in some seams, the trend of bar seam can be identical, also can be different, can also be the form of intersecting.
Described joint profiled member can be one or more in iron plate, sand paper or coarse cloth.
The method using above-mentioned sample preparation shear to carry out sample preparation and shear test is: comprise the steps:
Step 1: described sample preparation assembly and described joint molding assembly are solidified as a whole, forms jointed rock mass mould;
Step 2: pour sample material in this jointed rock mass mould, vibrate, leaves standstill, makes it shaping;
Step 3: take out joint profiled member, form joint structure in rock mass;
Step 4: mould and cast rock mass integral piece are erected, at this moment described baffle plate is vertically arranged, remove and the keeper up and down in the joint molding assembly of cylindrical shell consolidation, and the seal removed between the removable fixed sturcture of two plate bodys forming baffle plate and two plate bodys or become seam intermediate plate;
Step 5: fixed two side plates in described straight shear device Transformation cassette by removable fixed sturcture respectively on two end faces of cylindrical shell, form shear box;
Step 6: implement direct shear test, the upper end face of shear box applies normal force, the rock mass that described in fixing bottom, baffle plate is corresponding, to the upper guard-plate applied thrust of side; Or, the upper guard-plate of side is applied to the thrust in a direction, a rightabout thrust is applied to the under shield of opposite side.
The sample preparation device being applicable to jointed rock mass direct shear test provided by the invention, joint profiled member stably can be fixed in a mold by joint molding assembly wherein, solve in patternmaking process the problem that joint geometric configuration may be caused to change well, and can shaping multiple joints structure in strata model easily, further, more by arranging the joint such as broken line type, sawtooth pattern profiled member, the joint structure of various structures can be formed.The present invention increases straight shear device Transformation cassette on the basis of sample preparation device, just can form sample preparation and the bifunctional sample preparation shear of direct shear test, after making rock mass by sample preparation device, rock mass all need not be deviate from mould, joint molding assembly is only needed to remove, allow two of mould baffle plates separate and to expose gap therebetween, then four of straight shear device Transformation cassette blocks of side plates are arranged on two end faces of cylindrical shell, just can carry out direct shear test.The method of sample preparation shear provided by the invention and sample preparation and shear test, does not need to carry out the operation such as the demoulding, dress sample to jointed rock mass sample, avoids the damage caused rock mass structure, guarantee the accurate of test findings.
The invention solves joint geometrical precision in current jointed rock mass modelling process lower, the problem that may damage structural plane in labyrinth face and the demoulding, dress sample process cannot be made, use the present invention can make the jointed rock mass model of labyrinth face form, improve the global reliability of direct shear test.
Below by drawings and Examples, the present invention is described in detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of major embodiment sample preparation modular construction in sample preparation device provided by the invention and sample preparation shear.
Fig. 2 is a kind of structural representation of left baffle in sample preparation device provided by the invention and sample preparation shear.
Fig. 3 is the structural representation of the primary structure of joint molding assembly in sample preparation device provided by the invention and sample preparation shear.
Fig. 4 is the structural representation of sample preparation device provided by the invention.
Fig. 5 for having poured into a mould the structural representation made after the material of rock mass in the sample preparation device shown in Fig. 4.
Fig. 6 is on the basis of Fig. 5, the structural representation of the sample preparation device after being extracted by joint profiled member.
Fig. 7 for the device shown in Fig. 6 is erected come after structural representation.
Fig. 8 is the structural representation of the straight shear device Transformation cassette in sample preparation shear provided by the invention.
Straight shear device Transformation cassette installation in position described in Fig. 8 for by the device described in Fig. 7, by the removing of keeper up and down in the molding assembly of joint, is formed shear box and carries out the structural representation of direct shear test force by Fig. 9.
Wherein: 1: base plate; 2: baffle plate; 21: gap; 21a becomes seam intermediate plate; 3 butt plates; 4: run through long bolt; 5: fixing short screw; 6: upper location-plate; 7: lower location-plate; 8: joint profiled member; 8 straight shear device reformer plate.
Embodiment
The sample preparation device being applicable to jointed rock mass direct shear test provided by the invention, it comprises a sample preparation assembly and a joint molding assembly.
As shown in Figure 1, this sample preparation assembly comprises the cylindrical shell of a quadrangular section, it has four pieces of side plate bodies to be fixedly connected with by fixing short screw 5, these four blocks of side plates can be an entire plate, also can be as shown in Figure 1, the pair of side plates body be wherein oppositely arranged is, every block side plate body is that an entire plate is formed, and forms base plate 1; Another offside plate body be oppositely arranged is baffle plate 2, comprises two plate bodys separately, and the gap 21 between two plate bodys is parallel to the setting and align mutually in the gap of two baffle plates of the axis of described cylindrical shell, and this gap 21 is sealed by seal; The seal in the described gap 21 between two plate bodys in baffle plate 2 can be fixed on the rubber blanket between two plate bodys, and better a kind of embodiment is folded between two plate bodys one one-tenth seam intermediate plate 21a, this one-tenth seam intermediate plate 21a and adjacent two plate bodys pass through the removable fixed sturcture that arranges such as to be run through long bolt 4 for running through these two plate bodys be solidified as a whole with at least two that become to stitch intermediate plate 21a.
The width of the one-tenth seam intermediate plate 21a arranged between two plate bodys in baffle plate 2 has required, if this gap 21 is narrow, is carrying out in direct shear test, apply normal force, two plate bodys are easy in contact, and like this, applied pressure just can not act in rock test piece.If but this gap 21 is wide, in direct shear test, shear surface is just not easy to ensure surface level, and forms inclined-plane and cut by.Therefore, can know, this gap 21 can not be too wide, can not be too narrow.Preferably, the width of this one-tenth seam intermediate plate 21a is make the width in the gap 21 between two plate bodys be 5-10mm.
As shown in Figure 3, this joint molding assembly comprises location-plate 6, lower location-plate 7 and joint profiled member 8, and upper and lower keeper is provided with location structure, is bar seam, and the bar seam on upper location-plate 6 is up/down perforation.This seam makes joint profiled member 8 be fixed on upper and lower location-plate, and can extract out by upper location-plate 6; Between described joint molding assembly and described sample preparation assembly, removable fixed sturcture is set, concrete structure is: on upper and lower location-plate, arrange bolt hole, the end face of two base plates 1 and two baffle plates 2 also arranges bolt hole, by fixing lag bolt 5, upper and lower location-plate is fixed on cylindrical shell.In addition, in embodiment as shown in Figure 1, 2, 3, lower keeper comprises three blocks of plates, wherein, being connected as the plate body of in baffle plate 2 that two boards on limit is connected with the base plate 1 in quadrangular section cylindrical shell and its two ends respectively forms butt plate 3(and sees Fig. 1), middle plate is as lower location-plate 7, and it is arranged the bar seam of fixing described joint profiled member, two plate bodys of the plate of this centre and the both sides, gap 21 of baffle plate are connected.Butt plate 3 and lower location-plate 7 are all connected with base plate 1 and baffle plate 2 by fixing lag bolt 5, the bottom surface of closed cylinder, described joint profiled member 8 is placed in described cylindrical shell with being parallel to described tubular axis and corresponding with the described gap 21 of two described sidewalls, upper location-plate 6 is also be fixed on the upper surface of described cylindrical shell by fixing lag bolt 5, forms jointed rock mass mould (see figure 4).
Learn after deliberation, under fixed shear path condition, shear spring model exceedes 1/4 of sheared length L, and shear spring model is very little to jointed rock mass shearing strength properties influence, otherwise impact is just very large.Therefore, the 1/4(that the width A of this joint profiled member 8 is not less than test specimen sheared length L is shown in Fig. 4), or, get location-plate 6 the ratio of width to height A1/L1 > 1/3(and see Fig. 3).
Described joint profiled member can be one or more in iron plate, sand paper or coarse cloth.
In the molding assembly of described joint, joint profiled member 8 is rectangular sheet, the sheet material of also can be its shape of cross section be broken line type or sawtooth pattern, and the location structure on described upper and lower keeper is that the bar mated with joint profiled member xsect stitches a(and sees Fig. 6).
Bar seam a arranges several on upper and lower keeper, to form multiple joint in simulation jointed rock mass.
Corresponding to the joint profiled member of described rectangular sheet, in some seams, the trend of bar seam can be at least one of identical, the different form with intersecting.
The sample preparation shear being applicable to jointed rock mass direct shear test provided by the invention comprises two plate bodys at above-mentioned baffle plate 2, gap 21 between two plate bodys is parallel to the axis of described cylindrical shell and setting of mutually aliging, and on the basis of sample preparation device that sealed by seal, this gap 21, add a straight shear device Transformation cassette.
As shown in Figure 8, this straight shear device Transformation cassette comprises two pairs of side plates 9, the two pairs of side plates 9 respectively and be arranged through lag bolt between the both sides end face of described cylindrical shell and be connected, make fixing with described cylindrical shell after form shear box, the seam 9a of often pair of side plate 9 is corresponding with the gap 21 between two plate bodys in two baffle plates on described cylindrical shell, form a gap ring, as shown in Figure 9.
The method using sample preparation shear to carry out sample preparation and shear test is: comprise the steps:
Step 1: described sample preparation assembly and described joint molding assembly are solidified as a whole, forms jointed rock mass mould (as shown in Figure 4);
Step 2: pour sample material b in this jointed rock mass mould, vibrate, leaves standstill, makes it shaping (as shown in Figure 5);
Step 3: take out joint profiled member 8, form joint structure (as shown in Figure 6) in rock mass b;
Step 4: after modelling completes, mould and cast rock mass b integral piece are erected, at this moment described baffle plate is vertically arrange, remove and the location-plate up and down in the joint molding assembly of cylindrical shell consolidation, and the one-tenth run through between long bolt 4 and two plate bodys that dismounting makes in baffle plate two plate bodys be solidified as a whole stitches intermediate plate 21a(as shown in Figure 7);
Step 5: fixed two side plates 9 in described straight shear device Transformation cassette on two end faces of cylindrical shell by fixing lag bolt 5 respectively, form shear box (as shown in Figure 9), gap between two side plates 9 is equal with the gap in baffle plate 2 between two plate bodys aligns, form a gap ring, the top of this this gap ring is upper shear box, and bottom is down cut box;
Step 6: implement direct shear test, the upper end face of upper shear box applies normal pressure F, fixing down cut box, left side applied thrust f pushes to shear box.
The sample preparation device that the present invention is consisted of sample preparation assembly and joint molding assembly, by upper and lower two pieces of keeper prefabricated joint locating devices, ensures the precision of structural plane geometric accuracy and joint physical dimension, and can realize the making of labyrinth surface model.Therefore, the preparation of complicated jointed rock mass sample is applicable to; Adopt shear Transformation cassette that jointed rock mass sample preparation device is converted into shear.
The sample preparation assembly that this invention technical scheme is mainly reflected in joint molding assembly and shear transition components and matches with these two kinds of assemblies.The simulation of complicated jointed rock mass structure is realized by joint molding assembly, shear transition components is adopted to realize the conversion of device for producing molds and shear, mould is converted into shear box, reduce the sample demoulding, dress sample link, reduce due to sample pretreating on rock mass structure particularly on the impact of structural plane, carry out shop experiment, achieve the simulation of complicated jointed rock mass structure, short form test step, improve test efficiency and global reliability, for jointed rock mass failure mechanism and engineering mechanical properties parameter are determined to provide scientific basis.
The present invention can be converted into actual product quickly, in Geotechnical Engineering indoor direct shear test, carry out utilization and extention, has important economic benefit and social benefit.
Claims (10)
1. be applicable to a sample preparation device for jointed rock mass direct shear test, it is characterized in that: comprise a sample preparation assembly and a joint molding assembly,
This sample preparation assembly comprises a cylindrical shell, two sidewalls that this cylindrical shell is relative are baffle plate, each baffle plate is comprise two plate bodys or is a monoblock plate body, when comprising two plate bodys be, be solidified as a whole by arranging removable fixed sturcture between two plate bodys, gap between two plate bodys is parallel to the axis of described cylindrical shell and setting of mutually aliging, and this gap is sealed by seal;
This joint molding assembly comprises upper and lower two keepers and joint profiled member, and each described keeper is provided with location structure, described joint profiled member is fixed on two keepers and can extracts out by upper keeper; Between described joint molding assembly and described sample preparation assembly, removable fixed sturcture is set, make when joint molding assembly to combine with described sample preparation assembly be fixed as one time, described lower keeper is detachably fixed on the lower end of described cylindrical shell, the bottom surface of closed cylinder, described joint profiled member is placed in described cylindrical shell with being parallel to described tubular axis and corresponding with the described gap of two described sidewalls, described upper keeper is detachably fixed on the upper surface of described cylindrical shell, forms jointed rock mass mould.
2. be applicable to a sample preparation shear for jointed rock mass direct shear test, it is characterized in that: comprise a sample preparation assembly, a joint molding assembly and a straight shear device Transformation cassette,
This sample preparation assembly comprises a cylindrical shell, two sidewalls that this cylindrical shell is relative are baffle plate, each baffle plate comprises two plate bodys, be solidified as a whole by arranging removable fixed sturcture therebetween, gap between two plate bodys is parallel to the axis of described cylindrical shell and setting of mutually aliging, and this gap is sealed by seal;
This joint molding assembly comprises upper and lower two keepers and joint profiled member, and each described keeper is provided with location structure, described joint profiled member is fixed on two keepers and can extracts out by upper keeper; Between described joint molding assembly and described sample preparation assembly, removable fixed sturcture is set, make when joint molding assembly to combine with described sample preparation assembly be fixed as one time, described lower keeper is detachably fixed on the lower end of described cylindrical shell, the bottom surface of edge sealing cylindrical shell, described joint profiled member is placed in described cylindrical shell with being parallel to described tubular axis and corresponding with the described gap of two described sidewalls, described upper keeper is detachably fixed on the upper surface of described cylindrical shell, forms jointed rock mass mould;
This straight shear device Transformation cassette comprises two pairs of side plates, two pairs of side plates arrange removable fixed sturcture respectively and between the both sides end face of described cylindrical shell, make to form shear box after described side plate and described cylindrical shell being fixed by this removable fixed sturcture, the seam of often pair of side plate is corresponding with the gap on described cylindrical shell between two plate bodys.
3. device according to claim 1 and 2, it is characterized in that: described cylindrical shell is quadrangular section, it has four blocks of side plates to be fixedly connected with, and the pair of side plates be wherein oppositely arranged is, every block side plate is that an entire plate is formed, and the another pair of side plates be oppositely arranged is described baffle plate.
4. according to the device one of claims 1 to 3 Suo Shu, it is characterized in that: the seal in the described gap between two plate bodys in described baffle plate is fixed on the rubber blanket between two plate bodys, or, be the one one-tenth seam intermediate plate be folded between two plate bodys, this one-tenth seam intermediate plate and adjacent two plate bodys are solidified as a whole by the removable fixed sturcture arranged; And/or,
The width in the described gap in described baffle plate between two plate bodys is 5-10mm; And/or,
The width of this joint profiled member is not less than 1/4 of test specimen sheared length; Or, the ratio of width to height A1/L1 > 1/3 of upper location-plate.
5. according to the sample preparation shear being applicable to jointed rock mass direct shear test one of Claims 1-4 Suo Shu, it is characterized in that: described removable fixed sturcture is bolt fastening structure; And/or, be at least two screw rod stationary installations running through these two plate bodys and be folded in the one-tenth seam intermediate plate between two plate bodys by the removable fixed sturcture that two of described baffle plate plate bodys and the seam of one-tenth therebetween intermediate plate are solidified as a whole.
6. according to the sample preparation shear being applicable to jointed rock mass direct shear test one of claim 1 to 5 Suo Shu, it is characterized in that: the lower keeper in the molding assembly of described joint is made up of at least two boards body, wherein one piece of plate body arranges described location structure, between the end face of each plate body and described cylindrical shell, removable fixed sturcture is set, and there is no fixed sturcture between each plate body.
7. the sample preparation shear being applicable to jointed rock mass direct shear test according to claim 6, it is characterized in that: described lower keeper comprises three blocks of plates, wherein, what the two boards on limit was connected with the entire plate in quadrangular section cylindrical shell and its two ends respectively is connected as the plate body of in baffle plate, middle plate is arranged the bar seam of fixing described joint profiled member, two plate bodys of the plate of this centre and the both sides, gap of baffle plate are connected.
8. according to the sample preparation shear being applicable to jointed rock mass direct shear test one of claim 1 to 7 Suo Shu, it is characterized in that: in the molding assembly of described joint, described joint profiled member is rectangular sheet, its shape of cross section is one or more in the sheet material of broken line type or sawtooth pattern; And/or described joint profiled member is one or more in iron plate, sand paper or coarse cloth; And/or the location structure on described upper and lower keeper is that the bar mated with joint profiled member xsect stitches.
9. the sample preparation shear being applicable to jointed rock mass direct shear test according to claim 8, it is characterized in that: described bar is sewn on described keeper and arranges several, to form multiple joint in simulation jointed rock mass, in some seams, the trend of bar seam is identical, at least one in the different form with intersecting.
10. the method using the sample preparation shear described in claim 2 to 9 to carry out sample preparation and shear test is: comprise the steps:
Step 1: described sample preparation assembly and described joint molding assembly are solidified as a whole, forms jointed rock mass mould;
Step 2: pour sample material in this jointed rock mass mould, vibrate, leaves standstill, makes it shaping;
Step 3: take out joint profiled member, form joint structure in rock mass;
Step 4: mould and cast rock mass integral piece are erected, at this moment described baffle plate is allowed vertically to arrange, remove and the keeper up and down in the joint molding assembly of cylindrical shell consolidation, and remove the seal between the removable fixed sturcture of two plate bodys forming baffle plate and two plate bodys;
Step 5: fixed two side plates in described straight shear device Transformation cassette by removable fixed sturcture respectively on two end faces of cylindrical shell, form shear box;
Step 6: implement direct shear test, the upper end face of shear box applies normal force, the rock mass that described in fixing bottom, baffle plate is corresponding, to the upper guard-plate applied thrust of side; Or, the upper guard-plate of side is applied to the thrust in a direction, a rightabout thrust is applied to the under shield of opposite side.
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| CN201510016563.4A CN104865108B (en) | 2015-01-13 | 2015-01-13 | Sample preparation device, sample preparation shear and sample preparation shearing test method suitable for jointed rock mass direct shear test |
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| CN105675409A (en) * | 2016-03-31 | 2016-06-15 | 中国电建集团华东勘测设计研究院有限公司 | Integrated type rock mass structural surface direct shear apparatus and direct shear test method |
| CN105699154A (en) * | 2016-04-28 | 2016-06-22 | 中国电建集团成都勘测设计研究院有限公司 | Shear-carrying test sample manufacturing device and sample manufacturing method |
| CN106092714A (en) * | 2016-08-02 | 2016-11-09 | 中国科学院武汉岩土力学研究所 | A kind of rock-like materials cuboid sample sample preparation stage apparatus |
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| CN112729984A (en) * | 2020-12-22 | 2021-04-30 | 华能煤炭技术研究有限公司 | Method and device for preparing multiple groups of cross jointed rock mass model test pieces |
| CN114323845A (en) * | 2021-12-16 | 2022-04-12 | 山西潞安环保能源开发股份有限公司常村煤矿 | Manufacturing tool and method for jointed rock mass |
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| CN106442048B (en) * | 2016-09-08 | 2019-03-12 | 成都理工大学 | Ladder-like joint rock bridge model preparation facilities and its application method |
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| CN111207972A (en) * | 2020-01-13 | 2020-05-29 | 白逸凡 | Rock test piece manufacturing die capable of adjusting joint angle and position and using method |
| CN111982708A (en) * | 2020-08-19 | 2020-11-24 | 中国科学院地质与地球物理研究所 | Shearing box for simulating movement characteristics of movable fault |
| CN112345391A (en) * | 2020-11-27 | 2021-02-09 | 沈阳建筑大学 | Loading test device and method for road material crack load transfer behavior |
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