CN204789107U - A device for measuring rock mass mechanics parameter - Google Patents
A device for measuring rock mass mechanics parameter Download PDFInfo
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- CN204789107U CN204789107U CN201520281893.1U CN201520281893U CN204789107U CN 204789107 U CN204789107 U CN 204789107U CN 201520281893 U CN201520281893 U CN 201520281893U CN 204789107 U CN204789107 U CN 204789107U
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- mechanics parameters
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Abstract
The utility model relates to a device for measuring rock mass mechanics parameter, including the probe base member, be equipped with at least one piston cavity on the probe base member, be equipped with the piston that suits in the piston cavity, this a device for measuring rock mass mechanics parameter still include through connecting device with the pressure -bearing mechanism that the piston links to each other to and the hydraulic circuit of control piston action. It adopts through set up ball pivot and pressure -bearing device on the probe base member, makes it need not revise the actual measurement and plays the mould error, has avoided the longitudinal bending influence, makes measuring result more accurate.
Description
Technical field
The utility model relates to boring elastic modulus instrument field, particularly relate in a kind of use and do not need to revise the device for measuring Mechanics Parameters of Rock Mass that actual measurement plays mould error, for boring elastic modulus instrument, it can measure distortion or the elastic modulus of solid dielectric in the borehole, be mainly used in rock mass, also can be used for concrete or metal.
Background technology
The stress-strain relation of rock mass, namely deformation modulus and elastic modulus are one of basic mechanical parameters of rock mass.Boring deformation method is a kind of home position testing method for measuring rock mass deformation or elastic modulus.Boring elastic modulus instrument is that a kind of boring deformation method that uses measures the distortion of rock mass or the instrument of elastic modulus.U.S. Gourde(G) graceful lifting jack (GoodmanJack) is representational boring elastic modulus instrument in the world, as the suggesting method of the International Rock mechanics council (ISRM), for measuring Test in Situ distortion or elastic modulus in the borehole.
The graceful lifting jack in Gourde(G) is invented by people such as R.E.Goodman nineteen sixty-eight.Its bore diameter is 76mm, and pressurizing block angle is 2 β=90 °, and length is 200mm, pressurizing piston is oblate, amounts to 12, stroke 12.5mm, top pressure 64MPa, with gauge measurement, gross capability 703kN, be out of shape and measure with two linear variable differential transformer (LVDT) formula sensors (LVDT), be arranged on two ends, sensitivity is 0.01mm, range ± 5mm, separately there are two drawback pistons, after off-test, can be retracted back to 69.85mm.
After the people such as nineteen sixty-eight Goodman publish thesis and transfer side slope instrument company of the U.S. (SlopeIndicatorCo.) production, many people are studied this method.
Meyer and Mcvey1974 E=68.95GPa, the aluminium block of υ=0.332 has done rating test to the graceful lifting jack in Gourde(G), measured result Ecalc=23.79GPa, and both differ three times.Within 1976, Heuze and Salem is calculated by three dimensional analysis, confirms that this difference is caused by the bending of bearing plate.The same year, it is wrong that Hustrulid recalculates the calculating finding Goodman k (υ) in one section of paper of nineteen sixty-eight, right value should be T*, he also calculates the relation at T* and actual contact angle simultaneously, and the actual contact angle β in Mcvey test may be 3.5 °-8.5 ° (when stress is 6.9-62.1MPa).
Within 1981, Shuri has studied contact problems in great detail.The chart that he provides shows, if require to reach Full connected when the pressure of 28MPa, for the rock of E=13.79GPa, bore diameter should be 75.895-76.708mm, and as E=68.95GPa, then bore diameter should be 75.895 1 76.327mm, as seen to boring requirement be quite high.Nineteen eighty-two Swolfs aluminium, magnesium, copper three kinds of derbies have done rating test, further demonstrate that the existence of the problems referred to above.
The reason producing above-mentioned difference mainly contains two, and one is the longitudinal bending of pressure block, and two is couplings of boring and briquetting radius-of-curvature.Current solution utilizes Finite element arithmetic fair curve or the calibration result in different rock mass to revise calculated value, the fair curve that such as Heuze and Salem proposes, as can be seen from Fig., when actual bullet mould is greater than 68.95GPa, curve is very steep, round-off error is very large, and when the error of surveying bullet mould is 5%, the error of revised true bullet mould Etrue will reach 35%.
Utility model content
For above deficiency, the utility model provides a kind of device for measuring Mechanics Parameters of Rock Mass, and its assembly structure is simple, easy to operate, does not need to revise actual measurement and plays mould error.
To achieve these goals, the technical solution adopted in the utility model is: a kind of device for measuring Mechanics Parameters of Rock Mass, comprises probe matrix, and described probe matrix is provided with at least one piston cavity; The piston adapted is provided with in described piston cavity; This device being used for measuring Mechanics Parameters of Rock Mass also comprises the bearing mechanism be connected with described piston by coupling arrangement, and controls the hydraulic circuit of described piston action.
In order to realize structure optimization, its further measure is:
Preferably, described coupling arrangement is ball pivot, and piston is connected with described bearing mechanism by ball pivot.
Preferably, described coupling arrangement is half ball pivot, and described piston is connected with described bearing mechanism by half ball pivot, and the end face of described half ball pivot is connected with described bearing mechanism, and the flange of described half ball pivot is towards the side of described piston.
Preferably, described bearing mechanism comprises bearing plate and is connected cover plate, and described connection cover plate is connected with described piston, and described bearing plate is removably disposed in side on described connection cover plate, contrary with described piston.
Preferably, the mode that described bearing plate is bolted is arranged on described connection cover plate.
Preferably, be provided with can the chamber of the described bearing mechanism of some or all of accommodation for described probe matrix; The axis of described piston cavity and the axes normal of described probe matrix.
Preferably, described hydraulic circuit comprises for driving the drive circuit of described piston lift and for driving the backhaul loop of described backward stroke of the piston.
Preferably, described probe matrix is provided with the described piston of piston cavity described in four groups and correspondence, and piston described in four groups is the first piston, the second piston, the 3rd piston and the 4th piston that are arranged in order; Wherein, the second piston, the 3rd piston are between first piston and the 4th piston; Described hydraulic circuit comprises for driving the drive circuit of described piston lift and for driving the backhaul loop of described backward stroke of the piston, described piston is connected with described drive circuit, and first piston and the 4th piston add described backhaul loop using as active drawback piston.
Preferably, described probe matrix is provided with the displacement transducer for measuring the displacement in the middle part of described bearing mechanism.
The beneficial effects of the utility model:
1) 12 oblate pistons of graceful for Gourde(G) lifting jack are changed into four circular pistons of the present utility model, they are all positioned at bearing plate section, thus avoid longitudinal bending impact, two pistons being positioned at outside add low tension loop and double as drawback piston, shorten the overall length of instrument, but pressor areas length L is still greater than the L/D value of the graceful lifting jack in Gourde(G) with the ratio of diameter D, makes measurement result more accurate.
2) when boring is round or examination sector hole footpath is inconsistent, piston easily produces eccentric pressurization, causes undercapacity, piston adds semicircle ball pivot, finely tunes bearing plate contact angle, makes measurement result more accurate.
3) two displacement transducers are arranged on middle part, close to maximum displacement position, even if pressure block has longitudinal bending also can not have an impact to measurement result, make measurement result more accurate.
4) bearing plate be connected dismountable between cover plate linking together, the radius-of-curvature of bearing plate, contact angle size and material bullet mould can be selected as the case may be, and it matches with bore diameter as far as possible; Meanwhile, change contact angle 2 β of bearing plate into 30 ° and 45 ° two kinds, increase contact, contact distribution is also more even, makes measurement result more accurate.
5) on piston, increase two force snesor, can directly measure piston and exert oneself, eliminate the impact on measurement result such as conversion pressure and line loss, and be conducive to record and data processing automatically, make measurement result more accurate.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the utility model is in contraction state;
Fig. 2 is the schematic diagram that the utility model is in open configuration;
Fig. 3 is the vertical view that the utility model connects cover plate;
Fig. 4 is the side view that the utility model connects cover plate;
Fig. 5 is the vertical view of the utility model bearing plate;
Fig. 6 is the side view of the utility model bearing plate;
Fig. 7 is the scheme of installation that the utility model connects cover plate and bearing plate;
In figure, 1, probe matrix, 11, piston cavity, 2, piston, 21, first piston, the 22, second piston, the 23, the 3rd piston, the 24, the 4th piston, 3, bearing mechanism, 31, bearing plate, 311, workplace, 312, installed surface, 32, connect cover plate, 4, ball pivot, 5, pick-up unit, 51, displacement transducer, 52, force snesor, 6, joint, 61, self-enclosed rapid-acting coupling, 62, under water aerospace connectors.
Embodiment
Be further elaborated the utility model below in conjunction with accompanying drawing, wherein, direction of the present utility model take Fig. 1 as standard.
With reference to Fig. 1, device for measuring Mechanics Parameters of Rock Mass of the present utility model, it comprises probe matrix 1, and is arranged on hydraulic circuit, bearing mechanism 3, coupling arrangement, pick-up unit 5, joint 6 and the drill rod connecting device (not shown in FIG.) on probe matrix 1.
Probe matrix 1 is for carrying miscellaneous part, the profile of probe matrix 1 is cylindrical, probe matrix 1 is provided with the piston 2 of four groups of piston cavities 11 and correspondence, piston cavity 11 along probe matrix 1 axis be arranged side by side and with the axis perpendicular of probe matrix 1, probe matrix 1 is provided with can the chamber of some or all of accommodation bearing mechanism 3.
With reference to Fig. 2 to Fig. 3, hydraulic circuit comprises for driving the drive circuit of described piston 2 lift and for driving the backhaul loop of described piston 2 backhaul, described piston 2 is connected with drive circuit, piston 2 and the piston cavity 11 be arranged on probe matrix 1, piston 2 and piston cavity 11 cooperating, piston 2 in the present embodiment and piston cavity 11 are set to four groups, piston 2 comprises first piston 21, second piston 22, 3rd piston 23 and the 4th piston 24, first piston 21 and the 4th piston 24 are positioned at the both sides of the second piston 22 and the 3rd piston 23, the first piston 21 and the 4th piston 24 that are wherein positioned at both sides are active drawback piston, the second piston 22 and the 3rd piston 23 that are positioned at centre are driven drawback piston, and piston 2 is set to circular piston, when positive pressurization, namely when the utility model stretches out, the outward movment while of four groups of pistons 2 is also exerted oneself, when oppositely pressurizeing, namely when the utility model is regained, the second piston 22 and the 3rd piston 23 backhaul is driven by first piston 21 and the 4th piston 24, thus back move, first piston 21 and the 4th piston 24 is made to serve the effect doubling as drawback piston 2, shorten the overall length of instrument.
With reference to Fig. 4 to Fig. 7, bearing mechanism 3 is arranged on probe matrix 1, and be positioned at piston cavity 11 tip position place, bearing mechanism 3 comprises bearing plate 31 and is connected cover plate 32, bearing plate 31 be connected cover plate 32 along probe matrix 1 set gradually from outside to inside, bearing plate 31 is set at least one piece and is specialized designs, and namely four pistons 2 connect one piece of bearing plate 31 by ball pivot 4 simultaneously; Also can be that bearing plate 31 is set to two pieces, be respectively and be connected on first piston 21 and the second piston 22, and be connected to the 3rd piston 23 and the 4th piston 24; Can also be that bearing plate 31 is set to four pieces, each piston 2 connects one piece of bearing plate 31.
The lateral surface of bearing plate 31 is workplace 311, and medial surface is installed surface 312, and workplace 311 is for contacting with institute gaging hole wall and apply pressure, and installed surface 312 is installed together by web member is dismountable with the side being connected cover plate 32, and this web member is bolt; Connect cover plate 32 and be set to one piece, the another side connecting cover plate 32 is connected on probe matrix 1 by coupling arrangement;
Coupling arrangement is ball pivot 4 or hemisphere glue 4, ball pivot 4 comprises stiff end and turning end, with be connected the turning end that one end that cover plate 32 connects is ball pivot 4, the stiff end of ball pivot 4 to be positioned on piston and to fix with piston 2, namely the end face of ball pivot 4 is connected with bearing mechanism 3, the flange of ball pivot 4 is towards the side of piston 2, and namely the end face of ball pivot 4 is connected with bearing mechanism 3, and the flange of ball pivot 4 is towards the side of described piston 2.Make bearing plate 31 and ball pivot 4 be connected to form holistic bearing mechanism 3 by being connected cover plate 32 therefrom, and bearing mechanism 3 stressed after to produce the rotation of certain angle by half ball pivot 4.
Pick-up unit 5 comprises displacement transducer 51 and force snesor 52, and displacement transducer 51 is set to two, its be arranged on probe matrix 1 on and relative in the middle part of bearing plate 31 position arrange, displacement transducer 51 is for measuring the displacement of bearing plate 31; Force snesor 52 is also set to two, and it is inner that it is arranged on piston 2, and force snesor 52 is for directly measuring exerting oneself of piston 2.
Joint 6 is arranged in the endface position of probe matrix 1 afterbody, and joint 6 comprises self-enclosed rapid-acting coupling 61 and aerospace connectors 62 under water, and self-enclosed rapid-acting coupling 61 is connected with high-pressure oil pipe, and aerospace connectors 62 is connected with physical prospecting cable under water.
Drill rod connecting device (not shown in FIG.), it is positioned in the endface position of probe matrix 1 afterbody, uses an adapting rod to be connected with standard-sized outer flat geologic drilling rod, utilize drilling rod to carry out popping one's head in transfer with on propose work.
Device for measuring Mechanics Parameters of Rock Mass of the present utility model, it is also provided with sensor measurement display unit, two-way high-pressure oil pipe, physical prospecting cable, manual two-way high-pressure oil pump, does not all draw on figure, to form complete boring elastic modulus instrument above.
The course of work of the present utility model is: be arranged on boring elastic modulus instrument by the utility model being in contraction state, then put in the lump in boring, hydraulic oil is injected in the hydraulic circuit of boring, the piston 2 on probe matrix 1 is made to drive bearing plate 31 to stretch out, until bearing plate 31 and the rock contact of hole wall, then pressurize step by step and pressure release by design proposal, and the rock deformation reading of record correspondence and the thrust reading of piston 2, curve plotting, calculates elastic modulus and the deformation modulus of rock.
The foregoing is only better embodiment of the present invention, the present invention is not limited to above-mentioned embodiment, the structural modification that local is small may be there is in implementation process, if do not depart from the spirit and scope of the present invention to various change of the present invention or modification, and belonging within claim of the present invention and equivalent technologies scope, then the present invention is also intended to comprise these change and modification.
Claims (9)
1., for measuring a device for Mechanics Parameters of Rock Mass, comprise probe matrix (1), it is characterized in that, described probe matrix (1) is provided with at least one piston cavity (11); The piston (2) adapted is provided with in described piston cavity (11); This device being used for measuring Mechanics Parameters of Rock Mass also comprises the bearing mechanism (3) be connected with described piston (2) by coupling arrangement, and controls the hydraulic circuit of described piston (2) action.
2. the device for measuring Mechanics Parameters of Rock Mass according to claim 1, is characterized in that, described coupling arrangement is ball pivot (4), and piston (2) is connected with described bearing mechanism (3) by ball pivot (4).
3. the device for measuring Mechanics Parameters of Rock Mass according to claim 1, it is characterized in that, described coupling arrangement is half ball pivot (4), described piston (2) is connected with described bearing mechanism (3) by half ball pivot (4), and the end face of described half ball pivot (4) is connected with described bearing mechanism (3), the flange of described half ball pivot (4) is towards the side of described piston (2).
4. the device for measuring Mechanics Parameters of Rock Mass according to any one of claim 1 to 3, it is characterized in that, described bearing mechanism (3) comprises bearing plate (31) and is connected cover plate (32), described connection cover plate (32) is connected with described piston (2), and described bearing plate (31) is removably disposed in upper, contrary with described piston (2) side of described connection cover plate (32).
5. the device for measuring Mechanics Parameters of Rock Mass according to claim 4, is characterized in that, the mode that described bearing plate (31) is bolted is arranged on described connection cover plate (32).
6. the device for measuring Mechanics Parameters of Rock Mass according to any one of claim 1 to 3, is characterized in that, described probe matrix (1) is provided with can the chamber of the described bearing mechanism of some or all of accommodation (3); The axis of described piston cavity (11) and the axes normal of described probe matrix (1).
7. the device for measuring Mechanics Parameters of Rock Mass according to any one of claim 1 to 3, it is characterized in that, described hydraulic circuit comprises for driving the drive circuit of described piston (2) lift and for driving the backhaul loop of described piston (2) backhaul.
8. the device for measuring Mechanics Parameters of Rock Mass according to any one of claim 1 to 3, it is characterized in that, described probe matrix (1) is provided with the described piston (1) of piston cavity (11) and correspondence described in four groups, first piston (21), second piston (22), three piston (23) and four piston (24) of piston (1) described in four groups for being arranged in order; Wherein, the second piston (22), the 3rd piston (23) are positioned between first piston (21) and the 4th piston (24); Described hydraulic circuit comprises for driving the drive circuit of described piston (2) lift and for driving the backhaul loop of described piston (2) backhaul, described piston (2) is connected with described drive circuit, and first piston (21) and the 4th piston (24) add described backhaul loop using as active drawback piston.
9. the device for measuring Mechanics Parameters of Rock Mass according to any one of claim 1 to 3, is characterized in that, described probe matrix (1) is provided with the displacement transducer of the displacement for measuring described bearing mechanism (3) middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520281893.1U CN204789107U (en) | 2015-05-04 | 2015-05-04 | A device for measuring rock mass mechanics parameter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520281893.1U CN204789107U (en) | 2015-05-04 | 2015-05-04 | A device for measuring rock mass mechanics parameter |
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| CN204789107U true CN204789107U (en) | 2015-11-18 |
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| CN201520281893.1U Active CN204789107U (en) | 2015-05-04 | 2015-05-04 | A device for measuring rock mass mechanics parameter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527167A (en) * | 2016-01-20 | 2016-04-27 | 张宗伟 | Equipment for measuring mechanical performance of building foundation |
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2015
- 2015-05-04 CN CN201520281893.1U patent/CN204789107U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527167A (en) * | 2016-01-20 | 2016-04-27 | 张宗伟 | Equipment for measuring mechanical performance of building foundation |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |