CN109386287B - Device for determining the drillability of rock - Google Patents
Device for determining the drillability of rock Download PDFInfo
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- CN109386287B CN109386287B CN201710652260.0A CN201710652260A CN109386287B CN 109386287 B CN109386287 B CN 109386287B CN 201710652260 A CN201710652260 A CN 201710652260A CN 109386287 B CN109386287 B CN 109386287B
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- 239000011435 rock Substances 0.000 title claims abstract description 146
- 238000000034 method Methods 0.000 claims description 12
- 238000005553 drilling Methods 0.000 description 6
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C39/00—Devices for testing in situ the hardness or other properties of minerals, e.g. for giving information as to the selection of suitable mining tools
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- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a device for determining the drillability of rock, comprising: a rock support surface capable of supporting rock placed thereon; a scoring portion of the scoring knife opposite and spaced from the rock supporting surface, the scoring knife movable in a direction parallel to the rock supporting plane for scoring a surface of the rock placed on the rock supporting surface; and a measuring mechanism configured to measure a parameter required to determine the drillability of the rock. By means of which an accurate and continuous rock drillability can be obtained.
Description
Technical Field
The invention relates to the field of research on rock mechanical properties, in particular to a device for determining the drillability of rock.
Background
Rock drillability is a comprehensive index for representing the breaking difficulty of rock and is a main basis for the work of designing a drill bit structure, selecting drilling process parameters, predicting the mechanical drilling speed and the like. Rock drillability is therefore a very important parameter for studying the mechanical properties of rock.
In the prior art, rock drillability is typically determined in the following manner. A drill bit is used to drill a depth into the rock to form a corresponding hole in the rock surface. Rock drillability at a borehole of rock is determined by measuring the force exerted by the drill bit during formation of the hole. However, in the above manner, the drillability can only be determined at a certain point on the rock. If it is desired to determine the drillability of a number of locations on the rock, it is necessary to drill holes separately at these locations. This results in a very heavy workload on the operator and the corresponding equipment. In addition, the rock is subject to considerable damage due to the large depth of the hole to be drilled for the measurement. Furthermore, despite the great effort involved, drillability is only available at a number of points dispersed on the rock. The cost is very high if one wants to get a continuous variation of the drillability of the rock by the drillability of these points. At the same time, the drillability of most locations on the rock is approximated by the drillability at the measuring point, so that the drillability of successive zones of rock measured in this way is very inaccurate. Inaccurate rock drillability may result in a drill bit selected by the operator that is not practically suitable for drilling, especially in drilling areas of complex geology. Therefore, the drill bit is easy to damage, and the drilling process is also easy to have errors such as well drilling deviation and the like, so that the underground operation is not facilitated.
There is therefore a need for a device for determining rock drillability, by means of which accurate and continuous rock drillability can be obtained.
Disclosure of Invention
In view of the above problems, the present invention proposes a device for determining rock drillability, by means of which accurate and continuous rock drillability can be obtained.
According to the invention, a device for determining the drillability of rock is proposed, comprising: a rock support surface capable of supporting rock placed thereon; a scoring portion of the scoring knife opposite and spaced from the rock supporting surface, the scoring knife movable in a direction parallel to the rock supporting plane for scoring a surface of the rock placed on the rock supporting surface; and a measuring mechanism configured to measure a parameter required to determine the drillability of the rock.
When the rock is supported on the rock supporting surface, a scoring knife moving in a direction parallel to the rock supporting plane can score the rock and thereby form a continuous scoring groove in the rock. By measuring the respective parameters resulting from the scoring by the measuring means, the drillability of the rock can be determined. By means of the device, the exact drillability of the rock in a certain continuous area of the rock can be determined very conveniently.
In one embodiment, the distance between the rock-supporting surface and the scoring knife remains constant while scoring.
In one embodiment, the apparatus for determining rock drillability comprises a support table comprising: a horizontally oriented lower support plate; an upper support plate disposed above the lower support plate and spaced apart from the lower support plate, the upper support plate having an upper surface forming the rock support surface; the connecting piece is arranged between the lower supporting plate and the upper supporting plate, the upper end of the connecting piece is fixedly connected with the upper supporting plate, and the lower end of the connecting piece is hinged with the lower supporting surface; and the cushion block is supported between the upper supporting plate and the lower supporting plate and is spaced from the lower end of the connecting piece.
In one embodiment, the apparatus for determining the drillability of rock further comprises a scoring blade holder, the scoring blade holder being configured at a lower end thereof with a receiving groove, the upper end of the scoring blade being fixedly received within the receiving groove, the scoring portion of the scoring blade extending downwardly to the lower end being extendable out of the receiving groove.
In one embodiment, the measuring mechanism comprises: the scribing tool comprises a vertical pressure sensor and/or a horizontal pressure sensor, wherein the vertical pressure sensor is arranged between the upper end of the scribing tool and the bottom wall of the accommodating groove and used for measuring vertical pressure applied to the scribing tool in a scribing process, the horizontal pressure sensor is arranged in the accommodating groove, and a measuring part of the horizontal pressure sensor is arranged between the front side of the scribing tool and the inner wall of the accommodating groove and used for measuring horizontal pressure applied to the scribing tool in the scribing process.
In one embodiment, the apparatus for determining rock drillability further comprises a scribe adjustment bracket comprising: a horizontally oriented moving member located above and connected to the scoring blade holder; a horizontally oriented mount located above the nicking tool; and an adjuster including a driving body supported by the fixed member, and an adjustment lever extending through the fixed member and coupled to the movable member, the driving body being configured to adjust a length of a portion of the adjustment lever between the movable member and the fixed member.
In one embodiment, a transmitter is arranged on one of the moveable part and the stationary part facing the other of the moveable part and the stationary part, and a corresponding receiver is arranged on the other of the moveable part and the stationary part, by means of which transmitter and receiver the distance between the moveable part and the stationary part can be determined.
In one embodiment, the scribing knife adjusting bracket further comprises a guide member fixed with the fixed member and penetrating through the movable member, and the guide member extends in a vertical direction; the device for determining the drillability of rock further comprises a fixing screw which can penetrate through the guide piece and is matched with the movable piece so as to fix the movable piece.
In one embodiment, the apparatus for determining rock drillability further comprises a base comprising: a fixed support seat on which the rock supporting surface is fixedly supported; the horizontal rail is connected with the fixed supporting seat and extends along the advancing direction of the scribing knife; the nicking tool adjusting support further comprises a sliding fitting piece in sliding fit with the horizontal rail, and the sliding fitting piece is fixedly connected with the guide piece.
In one embodiment, the device for determining the drillability of rock further comprises a rock clamping mechanism comprising at least two oppositely arranged clamping plates extending upwards from the rock supporting surface, and clamping bars in threaded connection with the respective clamping plates, on the mutually facing ends of which clamping bars contact plates are configured.
Compared with the prior art, the invention has the advantages that: when the rock is supported on the rock supporting surface, a scoring knife moving in a direction parallel to the rock supporting plane can score the rock and thereby form a continuous scoring groove in the rock. By measuring the respective parameters resulting from the scoring by the measuring means, the drillability of the rock can be determined. By means of the device, the exact drillability of the rock in a certain continuous area of the rock can be determined very conveniently.
Drawings
The invention is described in more detail below with reference to the accompanying drawings. Wherein:
FIG. 1 shows a schematic diagram of an apparatus for determining the drillability of rock according to one embodiment of the present invention;
FIG. 2 shows an enlarged view of a portion of the apparatus of FIG. 1;
FIG. 3 shows a side view of a portion of an apparatus for determining the drillability of rock according to an embodiment of the invention;
fig. 4 shows an enlarged view of a part of the device in fig. 1.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Detailed Description
The invention will be further explained with reference to the drawings.
Fig. 1 schematically shows an apparatus for determining the drillability of rock (hereinafter referred to as "apparatus") 100 according to an embodiment of the invention.
In the embodiment shown in fig. 1, the apparatus 100 comprises a rock supporting surface 61 and a nicking tool 20 disposed above the rock supporting surface. The rock supporting surface 61 faces generally upwards and is capable of supporting rock 8 placed thereon. The scoring portion 21 of the scoring knife 20 for scoring rock is spaced opposite the rock supporting surface 61 so as to be in contact with the rock 8 supported on that surface 61. The scoring knife 20 is movable in a direction parallel to the rock supporting surface 61 and is thereby able to score a corresponding succession of scoring grooves on the surface of the rock 8. The corresponding characteristic parameters of the scribing groove or the corresponding characteristic parameters in the scribing process are measured by the measuring mechanism, so that the accurate rock drillability of the scribed continuous area can be obtained.
The respective characteristic parameter of the scribing groove herein may include at least one of a depth, a width, a height of a bottom surface of the scribing groove, and the like of the scribing groove.
The corresponding characteristic parameter in the scoring process herein may include at least one of scoring speed, scoring pressure, and the like.
In the embodiment shown in fig. 1, a corresponding rock clamping mechanism may also be provided in order to be able to secure the rock 8 to the rock supporting surface 61.
As shown in fig. 4, the rock clamping mechanism comprises two oppositely spaced apart clamping plates 30, the clamping plates 30 extending upwardly from a rock supporting surface 61. The rock 8 may be disposed between opposing clamping plates 30. The rock clamping mechanism may further comprise a clamping bar 31 threadedly connected to the clamping plate 30, the clamping bar 31 extending in a direction parallel to the rock supporting surface 61 to contact the rock 8. Preferably, a contact plate 32 is formed on the end of the gripping shank that is in contact with the rock 8. The contact plate 32 has an area larger than that of the end of the clamping bar. Such a contact plate 32 contributes to a more stable fixation of the rock 8. In addition, another pair of the oppositely disposed clamping plates 33 and the corresponding clamping bars 34 may also be provided in other directions.
In a preferred embodiment, the distance between the scoring portion 21 of the scoring knife 20 and the rock supporting surface 1 is kept constant. This ensures that the bottom surface of the scribe line is in one plane. At this time, the drillability of the rock in the continuous region subjected to scribing can be determined by measuring the scribing pressure of the scribing knife 20. Preferably, in the case of determining the drillability of the rock by measuring the scribing pressure, one scribing knife is used in one scribing process, whereby the width of the scribing groove is constant. Preferably, in the case where the rock drillability is determined by measuring the scribing pressure, the scribing speed is ensured to be constant in one scribing process.
The rock 8 used here may be a cylindrical core. When the cylindrical core is arranged on the rock supporting surface 61, the axis of the cylindrical core is substantially parallel to the rock supporting surface 61.
In the embodiment shown in fig. 1, the rock supporting surface 61 is formed in the following way.
The apparatus 100 includes a support table that includes a lower support plate 29, an upper support plate 6, and a connector 24. The lower support plate 29 is oriented horizontally, that is to say its surface extends in a horizontal direction. The upper support plate 6 is located above and spaced apart from the lower support plate 6. The connection member 24 is provided between the upper support plate 6 and the lower support plate 29 for support. The upper surface of the upper support plate 6 thus forms the rock supporting surface 61.
In one embodiment, the connector 24 may be fixedly connected with the upper support plate 6 and the lower support plate 29.
In a preferred embodiment, the connector 24 is fixedly connected to one of the upper support plate 6 and the lower support plate 29 and is hinged to the other. In the embodiment shown in fig. 1, for example, the connecting piece 24 is constructed with a substantially triangular or trapezoidal cross-section, the upper end of which, with a larger area, is fixedly connected to the upper support plate 6 and the lower end of which, with a smaller area, is hinged to the lower support plate 29. With this arrangement, the upper support plate 6 can be rotated relative to the lower support plate 29, thereby enabling adjustment of the surface portion of the rock 8 facing the scoring portion 21 of the scoring knife 20. Thereby, the position where the scoring is to be performed can be adjusted after the rock 8 has been fixed to the rock supporting surface 61. This arrangement is particularly suitable in the case of a cylindrical core of rock 8.
In addition, a spacer 23 for support is provided between the upper support plate 6 and the lower support plate 29. The spacer 23 may be removed when rotating the upper support plate 6 to avoid the spacer 23 interfering with the rotation of the upper support plate 6. In order to avoid unintended rotation of the upper support plate 6 during scoring and thereby affect the scoring and drillability determination, a spacer block 23 may be provided between the upper support plate 6 and the lower support plate 29. The height of the pad 23 is determined according to the distance between the upper support plate 6 and the lower support plate 29.
In the embodiment shown in fig. 1 and 2, the following setting may be made for measuring the scribing pressure of the scribing knife 20.
The apparatus 100 comprises a scoring blade seat 18 above the rock supporting surface 61, the distance between the scoring blade seat 18 and the rock supporting surface 61 being constant. The scoring blade seat 18 is configured with a receiving groove at a lower portion thereof. The upper end of the nicking tool 20 is fixedly received in the receiving groove, and the lower end of the nicking tool 20 extends downward to protrude out of the receiving groove. Wherein the scoring portion 21 of the scoring knife 20 is configured on the lower end of the scoring knife 20, whereby the scoring portion 21 protrudes out of the receiving groove to facilitate scoring of the rock 8.
In order to facilitate the fixation between the scribing cutter 20 and the scribing cutter holder 18, an annular groove is formed on a side surface of an upper end of the scribing cutter 20, and the scribing cutter holder 18 is formed with a socket inserted into the annular groove. The insert may be integrally formed with the remainder of the scoring blade seat 18 or may be separately machined and assembled together. For example, the plug part may be a circlip.
As shown in fig. 2, the measuring mechanism includes a vertical pressure sensor 10 for measuring a vertical pressure to which the scribing knife 20 is subjected, and/or a horizontal pressure sensor 9 for measuring a horizontal pressure to which the scribing knife 20 is subjected.
The vertical pressure sensor 10 may be disposed between the upper end of the nicking tool 20 and the bottom wall of the receiving groove. Accordingly, when the scribing cutter 20 performs scribing, the pressure in the vertical direction applied to the scribing cutter 20 can be effectively transmitted to the vertical pressure sensor 10.
The horizontal pressure sensor 9 may also be provided in the housing chamber with its measuring portion provided between the front side of the nicking tool 20 and the inner side wall of the housing chamber. The "front side" referred to herein is a side of the scribing blade 20 facing the scribing movement direction. In addition, the horizontal pressure sensor 9 may be further provided with an engaging portion connected to the above-described measuring portion and surrounding at least a portion of the scribing knife 20. For example, the measuring portion and the engaging portions provided on both sides thereof may be configured in a "concave" shape structure or a C-shape structure together.
For example, as also shown in fig. 1, the apparatus 100 may further include a scribe adjustment bracket for supporting the scribe tool post 18 and adjusting the position of the scribe tool 20. The nicking tool adjustment bracket includes a horizontally oriented movable member 11 to which a nicking tool holder 18 is secured. The nicking tool adjustment bracket also includes a horizontally oriented stationary member 13, the stationary member 13 being located above the moveable member 11. The device 100 further comprises an adjuster comprising a drive body 14 fixedly arranged on the fixed member 13, and an adjustment rod 15 extending through the fixed member 13 and fixedly connected to the movable member. The driving body 14 is engaged with the adjustment lever 15 such that the adjustment lever 15 can move in a vertical direction, thereby enabling adjustment of the length of the adjustment lever 15 between the movable member 11 and the fixed member 13. In this way, the distance between the fixed part 13 and the movable part 11, and thus the distance between the movable part 11 and the scribing seat 18 and the scribing knife 20 fixed thereto, relative to the rock supporting surface 61 and the rock 8, can be adjusted.
Preferably, a distance sensor 12 is provided between the moveable member 11 and the stationary member 13. For example, a transmitter is provided on the movable part 11 and a corresponding receiver is provided on the stationary part 13. Or the transmitter is arranged on the stationary part 13 and the receiver on the moveable part 11. The distance between the movable member 11 and the fixed member 13 can be known by the distance sensor 12. On the basis, the scribing depth of the scribing knife can be known in the following way.
In the initial state, the scribing knife 20 is arranged above the rock 8 at a distance from the rock 8. Moving the movable piece 11 downward by controlling the driving body 14 can move the scribing knife 20 toward the rock 8. In this process, the vertical pressure sensor 10 does not detect the vertical pressure, and its index is zero. The above process is carried out until the scoring portion 21 of the nicking tool 20 just touches the surface of the rock 8. At this time, the pressure vertical sensor 10 detects that the scribing cutter 20 is just beginning to be subjected to the pressure, and the indication thereof is abruptly changed. In this case, the indication number of the distance sensor 12 is D1, for example. However, the scoring knife 20 continues to be moved downward to the desired position so that the scoring knife 20 can leave a scoring groove in the rock 8. In this case, the indication number of the distance sensor 12 is D2, for example. This can provide a scribing depth D-D2-D1.
It will be appreciated that just after the scoring knife 20 comes into contact with the rock 8, the scoring knife 20 may be moved downwardly a distance (not yet to the intended scoring position) and at that point the scoring knife 20 is moved in a direction parallel to the rock supporting surface to score a shallower scoring groove. Then, the scribing knife 20 is further moved down to a desired scribing position, and scribing is performed.
If the surface of the rock 8 to be scored is not flat (i.e., not in the same plane), the scoring knife 20 is preferably moved downwardly in steps in the manner described above until the scoring knife 20 leaves a complete, shallower scoring groove on the surface to be scored. The bottom wall of the shallower scoring groove is now in one plane. Subsequently, the scribing knife 20 is moved down to a desired scribing position to continue scribing on the bottom wall of the scribing groove, forming a desired deeper scribing groove.
Preferably, a stopper 17 protruding toward the other of the movable member 11 and the fixed member 13 is provided on the movable member 11 and/or the fixed member 13. The height of the stop block 17 is greater than the sum of the heights of the transmitter and the receiver. Therefore, the distance between the movable member 11 and the fixed member 13 is not less than the height of the stopper 17, and the transmitter and the receiver are not crushed.
In addition, as also shown in fig. 1, the nicking tool adjustment bracket further includes a guide member 5, and the guide member 5 is fixed to the fixed member 13 by a bolt 16 and extends downward in the vertical direction through the movable member 11. The guide 5 can limit the moving direction of the mover 11 to ensure smooth positioning of the scribing knife 20.
Preferably, a through hole is provided transversely through the mobile element 11, through which a fixing screw 19 passes and cooperates with the guide 5. Thus, when scribing is performed, the fixing screw 19 is screwed into the through hole to be closely fitted to the guide 5. For example, its end rests tightly against the guide 5, or a corresponding threaded hole is provided in the guide 5, into which a fixing screw 19 can be screwed for fixing. Thus, the height of the scribing knife can be kept unchanged during scribing.
In addition, the device 100 may also include a base 1. In the embodiment shown in fig. 3, the base 1 comprises a fixed support 27. The rock bearing surface 271 may be formed directly by the upper surface of the fixed support seat 27. In addition, the support stand described above may be provided above the fixed support base 27.
The base 1 further comprises a horizontal rail 26 provided on a fixed support 27, the horizontal rail 26 extending in the direction in which the scribing cutter is to be moved. The sliding engagement piece 3 (see fig. 1) connected to the guide 5 is engaged with the horizontal rail 26 to be movable along the horizontal rail 26. The guide 5 can be fixedly connected to the sliding fitting 3 by means of a bolt 4. In the embodiment shown in fig. 3, the fixed bearing 27 is hollow for the sliding engagement piece 3 to pass through. Alternatively, the fixed support 27 may be solid, and both sides thereof are provided with horizontal rails 26 that can be engaged with the sliding engagement piece 3 in fig. 1, respectively.
The base 1 may further comprise a drive motor 2, the drive motor 2 being configured to drive the sliding engagement element 3 along the horizontal rail 26, preferably at a constant speed.
Further, the base 1 may further include a bottom plate 25 and a caster 28 disposed under the bottom plate 25. A stationary support 27 is provided on the base plate 25, thereby enabling the device 100 to be moved as desired. The caster wheels 28 are preferably universal wheels.
Preferably, the apparatus 100 further comprises a debris cleaning mechanism 7. The debris cleaning mechanism 7 includes a suction machine and a suction pipe extending from the suction machine to the front side of the scribing portion 21 of the scribing knife 20. The suction tube may be a hose, a portion of which may be secured to the moveable member 11. The rock debris generated by the scribing can be timely cleaned away through the rock debris cleaning mechanism 7, so that the rock debris is prevented from obstructing the smooth proceeding of the scribing.
In addition, the apparatus 100 may also include a computer or workstation 22. The workstation 22 can be used for controlling the movement of the movable part 11, the movement of the sliding partner 3, etc., or for receiving parameter data measured by the vertical pressure sensor 10, the horizontal pressure sensor 9 and the distance sensor 12. The computer or workstation 22 can also be used to process the parameter data to obtain accurate rock drillability of the continuous region being scored.
The depth of the scribe groove herein may typically be between 1mm to 5mm, wherein if the scribe groove is obtained by multiple scribes, the depth of a single scribe may be between 0.1mm to 0.5 mm. The depth of the scoring groove is very shallow, negligible relative to the entire rock 8. Thus, the apparatus 100 is able to determine rock drillability by not destroying the rock 8, or substantially not destroying the rock 8. Thus, the integrity of the rock 8 can be guaranteed, which is very advantageous for a re-usable rock.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (9)
1. An apparatus for determining rock drillability, comprising:
a rock support surface capable of supporting rock placed thereon;
a scoring portion of the scoring knife opposite and spaced from the rock supporting surface, the scoring knife movable in a direction parallel to the rock supporting surface for scoring a surface of the rock placed on the rock supporting surface;
a measuring mechanism configured to measure a parameter required to determine the drillability of the rock; and
a support table, the support table comprising:
a horizontally oriented lower support plate;
an upper support plate disposed above the lower support plate and spaced apart from the lower support plate, the upper support plate having an upper surface forming the rock support surface;
the connecting piece is arranged between the lower supporting plate and the upper supporting plate, the upper end of the connecting piece is fixedly connected with the upper supporting plate, the lower end of the connecting piece is hinged with the lower supporting plate, or the upper end of the connecting piece is hinged with the upper supporting plate, and the lower end of the connecting piece is fixedly connected with the lower supporting plate; and
the cushion block is supported between the upper supporting plate and the lower supporting plate.
2. The apparatus of claim 1, wherein the distance between the rock-supporting surface and the nicking tool remains constant while scoring.
3. The apparatus of claim 1 or 2, wherein the apparatus for determining the drillability of rock further comprises a scoring blade holder, the scoring blade holder being configured with a receiving slot at a lower end thereof, the upper end of the scoring blade being fixedly received within the receiving slot, the scoring portion of the scoring blade extending downwardly onto the lower end thereof being extendable out of the receiving slot.
4. The apparatus of claim 3, wherein the measuring mechanism comprises:
a vertical pressure sensor disposed between the upper end of the scribing tool and the bottom wall of the receiving groove for measuring the vertical pressure applied to the scribing tool during scribing, and/or
The horizontal pressure sensor is arranged in the accommodating groove, and a measuring part of the horizontal pressure sensor is positioned between the front side of the scribing cutter and the inner wall of the accommodating groove and used for measuring the horizontal pressure applied to the scribing cutter in the scribing process.
5. The apparatus of claim 3, wherein the means for determining rock drillability further comprises a nicking tool adjustment carriage, the nicking tool adjustment carriage comprising:
a horizontally oriented moving member located above and connected to the scoring blade holder;
a horizontally oriented mount located above the nicking tool; and
an adjuster including a driving body supported by the stationary member, and an adjustment lever extending through the stationary member and coupled to the movable member, the driving body being configured to adjust a length of a portion of the adjustment lever between the movable member and the stationary member.
6. The apparatus according to claim 5 wherein a transmitter is provided on one of the moveable member and the stationary member towards the other of the moveable member and the stationary member, and a corresponding receiver is provided on the other of the moveable member and the stationary member, whereby the distance between the moveable member and the stationary member can be determined.
7. The apparatus of claim 5, wherein the nicking tool adjustment bracket further comprises a guide member secured to the stationary member and passing through the movable member, the guide member extending in a vertical direction;
the device for determining the drillability of rock further comprises a fixing screw which can penetrate through the movable member and is matched with the guide member so as to fix the movable member.
8. The apparatus of claim 7, wherein the apparatus for determining rock drillability further comprises a base, the base comprising:
a fixed support seat on which the rock supporting surface is fixedly supported; and
the horizontal rail is connected with the fixed supporting seat and extends along the advancing direction of the scribing knife;
the nicking tool adjusting support further comprises a sliding fitting piece in sliding fit with the horizontal rail, and the sliding fitting piece is fixedly connected with the guide piece.
9. Device as claimed in claim 1 or 2, characterized in that the device for determining the drillability of rock further comprises a rock clamping mechanism comprising at least two oppositely arranged clamping plates extending upwards from the rock supporting surface, and clamping bars in threaded connection with the respective clamping plates, on the mutually facing ends of which clamping bars contact plates are constructed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710652260.0A CN109386287B (en) | 2017-08-02 | 2017-08-02 | Device for determining the drillability of rock |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710652260.0A CN109386287B (en) | 2017-08-02 | 2017-08-02 | Device for determining the drillability of rock |
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| CN109386287A CN109386287A (en) | 2019-02-26 |
| CN109386287B true CN109386287B (en) | 2020-06-02 |
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| CN114112753A (en) * | 2020-09-01 | 2022-03-01 | 中国石油化工股份有限公司 | Rock continuous hardness testing device and testing method |
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2017
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| SU875022A1 (en) * | 1980-02-27 | 1981-10-23 | Фрунзенский политехнический институт | Bed for testing drillability of rock |
| CN101782490A (en) * | 2010-03-26 | 2010-07-21 | 沈阳建筑大学 | Double hobbing cutter rock hobbing comprehensive test bed |
| CN202544844U (en) * | 2012-03-16 | 2012-11-21 | 中国石油天然气集团公司 | Tester for determining rock drillability and drilling parameter sensitivity |
| CN205593864U (en) * | 2016-01-21 | 2016-09-21 | 西南交通大学 | Rock drillability chisel hits experimental apparatus |
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| CN109386287A (en) | 2019-02-26 |
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