CN101949679B - Half-fixed and combined rock strain measuring device - Google Patents
Half-fixed and combined rock strain measuring device Download PDFInfo
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- CN101949679B CN101949679B CN201010256216.6A CN201010256216A CN101949679B CN 101949679 B CN101949679 B CN 101949679B CN 201010256216 A CN201010256216 A CN 201010256216A CN 101949679 B CN101949679 B CN 101949679B
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Abstract
The invention relates to a half-fixed and combined rock strain measuring device, which consists of measuring mark rings, a measuring mark ring space supporting tube, independent stain test units with non-wired data communication transceivers and a stain reading buffering controller, wherein the independent stain test units are combined and placed between adjacent measuring mark rings in a rock hole in turn respectively; the spherical contacts at the two ends of the shell each independent stain test unit are contacted and fixed with the upper and lower conical contact seat faces of adjacent measuring mark rings; and the end parts of the contacts at the two ends of the shell each independent stain test unit are provided with non-wired data communication transceivers respectively and face the non-wired data communication transceivers of adjacent independent stain test units end to end, the values of the strains sensed by the independent stain test units between the measuring mark rings are subjected to intra-unit electronic signal regulation and processing by a digital signal collection board first and then transmitted to the strain reading buffering controller outside the rock hole one by one from the inside to the outside by the non-wired data communication transceivers facing one another end to end under the control of software, and the strain reading buffering controller is connected with a computer in a wireless communication mode so as to transmit the strain values.
Description
Affiliated technical field
Technical field of the present invention belongs to a kind of technology that strain of rock mass is measured.More specifically say the mark ring is embedded in tested rock mass geology hole or artificial preformed hole and by its whitewashing and fixes with the unit length spacing by its stay pipe, when being subject to the physical factors such as self gravitation, external loads, environment temperature when rock mass and changing, the mark ring spacing can change, by testing this variation value, we are referred to as the measuring technique of strain of rock mass.Here the rock mass of statement, not only comprise the rock mass in the geology and geomorphology concept, also should comprise all kinds of concrete works structures of manually building.This strain measurement technique has application widely in Geotechnical Engineering.
Technical background
Usually the device of test rock mass internal strain is to use a kind of embedded strain gauge, this strainometer can be reinforcing steel strain gauge, it can be also vibrating string extensometer, according to the engineering detecting needs, by a plurality of strainometers, imbed in the rock mass hole or fixing in structure, and its signal wire fairlead is outer or structure is outer and by secondary instrument, it is carried out to reading or test one by one.For embedded strain gauge test mounting means, all embedded strain gauges are all to be fixedly mounted on respectively in the rock mass hole or within structure, belong to fixed mounting means.It has three shortcomings at least, the one, strainometer in the rock mass hole or its support fixture with surrounding rock body grouting fixedly the time, thereby can directly be subject to larger mortar impact flow power, cause strainometer and draw signal wire impaired, the strainometer survival rate is low, and signal quality is derived not good.When injecting mortar and engaging around strainometer, local faying face can form bubble or produce strainometer because the aggregate material is uneven and contact equivalent area with the mortar actual adhesion and be at random individual metachromatic state around the strainometer, these factors all can make its actual equivalence of strainometer of imbedding work and have larger difference between gauge length and theoretical gauge length rate definite value, make the actual strain test value misalignment of imbedding strainometer.The 2nd, be subject to rock mass aperture or structure restriction, draw that signal wire is too much long also can fixedly bring difficult to the strainometer whitewashing, thereby can not settle strainometer in limited petrosal foramen by the requirement of engineering number.The 3rd, embedded strain gauge can only disposablely use, and recyclable reusing, do not used price uneconomical.In addition, also have a kind of device of testing strain of rock mass, the micrometer that slides, it also adopts mark ring and its spacing stay pipe to be embedded in advance in tested rock mass hole, by the variable in distance that detects the mark interannular, tests the strain of rock mass value.Because the mark ring is subject to the constraint of its spacing stay pipe, when whitewashing fixedly, between the mark ring, relative position can not change, bonding relative intact with mortar around the mark ring, only the slip micrometer need be slipped in the rock mass hole and one by one the axial displacement changing value of each mark interannular be measured and can be drawn the strain of rock mass value during test.For the test mounting means of slip micrometer, the slip micrometer relatively slides and tests between each mark ring, belongs to the mounting means of free-standing.The strain value that this test draws, signal disturbs little, and the data degree of confidence is high.Although, slip micrometer its advantage for embedded strain gauge is more obvious, but still there is following deficiency: the one, to the strain of rock mass in same rock mass hole, test can not be carried out successional for a long time, continual detection, for engineering, disaster, environmental change requirement, carry out successional, continual Real-Time Monitoring to the strain of rock mass value wastes time and energy, and has in the use certain limitation.The 2nd, due to the slip micrometer in when test, need repeatedly one by one to being tested between all adjacent mark rings, can give birth to friction or collision to the mark environment-development, repeat this contact and collision and can cause between surface of contact occurring wearing and tearing or damage distortion, machining accuracy, the material that the micrometer that therefore slides is in contact with one another face to mark ring and micrometer gauge head had relatively high expectations and can only the single-piece work moulding.And the mark ring is the quick-wear part that can only disposablely imbed use and large usage quantity, caused in the manufacture and use of whole slip micrometer and supporting mark ring thereof the cost costliness.The 3rd, be subject to different loads change at rock mass, or the variation naturally of different time sections, the slip micrometer needs repeatedly or respectively to enter within each measuring point petrosal foramen the strain of rock mass situation of changing is tested, because inside and outside, the upper and lower temperature difference of petrosal foramen is larger, the slip micrometer also can be because the working environment difference variation makes himself length generation minor alteration, and this also is enough to have influence on strain testing precision and test effect.3 deficiencies that the slip micrometer is above, make its widespread use in Geotechnical Engineering be subject to larger restriction.
Summary of the invention
Be intended to propose a kind of strain of rock mass measurement mechanism of semifixed combination, it has done significant improvement for above-mentioned embedded strain gauge and slidingtype micrometer in the deficiency of test mounting means, both retained embedded strain gauge can carry out long-term continuously, the advantage of Real-Time Monitoring incessantly, can avoid embedded strain gauge again, Installation and Debugging are numerous and diverse, survival rate is low, recyclable reusing not, the not good or misalignment of signal quality, and the slip micrometer can not carry out long-term, continue Real-Time Monitoring or the shortcomings such as test error of bringing because of the temperature difference, the surface damage of mark loop contacts.The independent strain testing unit combination of each in the strain of rock mass measurement mechanism of this semifixed combination should be able to be placed between each mark ring fixing easily and flexibly, data therebetween transmit without directly interconnecting with cable, working environment is very stable, can be as using the slip micrometer in whole test process yet, need each mark ring between repeat mobile test, the frictional impact repeatedly that can not come in contact between head and mark loop contacts face causes damaging or error, the machining accuracy of the present invention to the contact fixed position, material is less demanding, can adopt cheap hard lead die sinking die casting to manufacture in batches, thereby improved test mass, reduced testing cost.The present invention except mark ring and its spacing stay pipe be one-time fix and install and use, other parts are all recyclable, reuse, and then the present invention are referred to as to a kind of strain of rock mass measurement mechanism of semifixed combination.
The technical solution adopted for the present invention to solve the technical problems is: utilize the mark ring equidistantly to embed in the rock mass hole, the measurement strain of rock mass device of the semifixed combination of each mark interannular variable in distance of some independent strain testing unit senses by micrometer is installed is the present invention, mark ring, mark ring spacing stay pipe, some independent strain testing unit with non-cable data communication receiving/transmission device and a reading strain cache controller with non-cable data communication receiving/transmission device, consists of; At the mark annulate shaft, to position middle part, its sagittal plane is equipped with two upper and lower cone seats dorsad each other, and mark ring two ends are connected with mark ring spacing stay pipe respectively, and equidistantly to embed in the rock mass hole; independent strain testing cell enclosure is a circular tube structure, its axial two ends are respectively the contact head of a spherical shape, two non-cable data communication receiving/transmission devices are arranged on respectively the end, the contact head crown of its spherical shape, be placed in the contact head of the spherical shape of each independent strain testing cell enclosure two ends in the rock mass hole can be respectively with adjacent two mark rings on, lower conical seat surface is in contact with one another, non-cable data communication receiving/transmission device between adjacent two independent strain testing unit face to face from beginning to end, each independent strain testing unit is sequentially by petrosal foramen bottom assembled arrangement between the mark ring respectively from below to up, until arrange under the lower conical seat surface of rock mass hole last mark ring of inner top, reading strain cache controller outer casing bottom also becomes the contact head of a spherical shape and is arranged on the upper conical seat surface of rock mass hole last mark ring of inner top, two non-cable data communication receiving/transmission devices are arranged in the reading strain cache controller, one of them is arranged on the end, the crown of its outer casing bottom spherical shape contact head, and with the non-cable data communication receiving/transmission device of the independent strain testing unit of distance rock mass hole inner top face to face, another is connected with the wireless communication antenna that is positioned at reading strain cache controller shell upper.
The present invention with the independent strain testing unit of non-cable data communication receiving/transmission device by the contact head of cell enclosure two end spherical shapes, the support of independent strain testing cell enclosure, coil tension spring, contact head cradle head, hook latch, micrometer, electronic signal conditioning and digital signal acquiring circuit plate, power supply and with its with two non-cable data communication receiving/transmission devices jointly form, independent strain testing cell enclosure supports and is formed by a plurality of pipe connection segments, one end of coil tension spring supports pipe with independent strain testing cell enclosure and is connected, the other end of coil tension spring connects to the movable measuring staff of micrometer, the micrometer shell supports pipe with independent strain testing cell enclosure and is connected, the contact head of independent strain testing cell enclosure two end spherical shapes is arranged on respectively the end that independent strain testing cell enclosure supports axial two of pipe, wherein one directly connects to contact head cradle head one end, its sagittal plane, end, crown inwardly has a hole vertically, hook latch and one of them non-cable data communication receiving/transmission device are housed in hole, the other end of cradle head connects to independent strain testing cell enclosure support pipe, the other end of independent strain testing cell enclosure two end spherical shape contact heads is directly supported the pipe other end with independent strain testing cell enclosure and is connected, its sagittal plane, end, crown inwardly also has a hole vertically, wherein another non-cable data communication receiving/transmission device is housed in hole, power supply is connected and powers with micrometer, electronic signal conditioning and digital signal acquiring circuit plate, non-cable data communication receiving/transmission device respectively, the strain signal output terminal of micrometer is connected with the signal input part of electronic signal conditioning and digital signal acquiring circuit plate, and electronic signal conditioning and digital signal acquiring circuit plate digital output end are connected with two non-cable data communication receiving/transmission devices respectively, the strain signal that is positioned at each independent strain testing unit micrometer sensing of mark interannular becomes digital signal and is residing under the software control of circuit board in electronic signal conditioning and the internal conversion of digital signal acquiring circuit plate, by its head and the tail position non-cable data communication receiving/transmission device face to face, is sent to from inside to outside one by one the reading strain cache controller be arranged in outside the rock mass hole.
The present invention with the reading strain cache controller of non-cable data communication receiving/transmission device by its with two non-cable data communication receiving/transmission devices and with CPU and memory buffer, power supply, wireless communication antenna, jointly form; Power supply is connected with two non-cable data communication receiving/transmission devices, CPU and memory buffer respectively, CPU and memory buffer are connected with the input end of two non-cable data communication receiving/transmission device data transmit-receives respectively, and one of them non-cable data communication receiving/transmission device also is connected with wireless communication antenna; Under the software control that resides in CPU and memory buffer, complete dump and the outside function transmitted of data to the strain testing data of all independent strain testings unit in the rock mass hole.
Mark ring of the present invention is a circular cylinder body, mark ring spacing stay pipe two end radial outsides insert respectively adjacent mark ring cylinder two end radially inner sides, mark ring and mark ring spacing stay pipe axially interconnect and support and pre-buried or be placed in the whitewashing rock mass hole in and fix, on the mark ring, lower conical contact seat surface each other dorsad and lay respectively at two limits of the axial inner shafts of mark ring cylinder to 1/2nd places, be split into a plurality of petal-like taper surface sipes supporting stations that are in its radial position, in the middle of each taper surface sipes supporting station, 1/2nd places have a narrow groove, on the mark ring, two circular cone heavy caliber faces of lower conical contact seat surface are respectively towards axial two ends of mark ring circular cylinder body, on its sagittal plane, be petal-like wide, narrow groove is parallel with mark ring cylinder axis direction respectively.
Be split into a plurality of petal-like wide keys that are on its sagittal plane of contact head of independent strain testing cell enclosure two end spherical shapes of the present invention, a plurality ofly be petal-like its axial plane of wide key and form a sphere towards its sagittal plane and make the contact head end of independent strain testing cell enclosure two end spherical shapes be rendered as respectively spherical that a petal-shaped distributes, each is positioned at the wide key of the contact head that is spherical shape, its radially 1/2nd positions its axially again projection one narrow key be extended down to the axial end portion of spherical shape contact head, radially be wide that a plurality of petal-shaped distribute, narrow key is parallel with the shell stay pipe body axis direction of the contact head of independent strain testing unit two end spherical shapes respectively, its spherical can be respectively with the mark ring on, lower contact base is coned face sipes supporting station and is in contact with one another, its narrow key can slip into respectively on mark, also coordinate with it contact among the narrow groove of lower conical contact seat surface.The invention has the beneficial effects as follows:
1, the width key, the mark ring cone shape that utilize coil tension spring, cradle head, hook latch, contact head to be the petal-shaped distribution contact seat surface, are petal-like width groove and these mechanism's cooperatings of sipes supporting station thereof, solve well each independent strain testing unit and contacted reliably fixing problem with each mark ring between contact site, realized that each independent strain testing unit can free in and out in the rock mass hole, combines semifixed installation purpose according to the order of sequence.
2, the non-cable data communication receiving/transmission device that utilizes head and the tail to install face to face, without in the rock mass petrosal foramen, outside hole, arranging cable, by using the non-direct contact type data transmission technology, simple and easy to do each independent strain testing unit that just makes can combine according to the order of sequence, collaborative strain testing work, solved well buried reliable data transmission, dump between each independent strain testing unit in the rock mass hole, reached the problem that transmits information to other computing machine.Realized the digital test that strain of rock mass is measured, digitized processing, the purpose of network monitoring management.
3, each independent strain testing unit in the rock mass hole mark ring between sequence combination, free in and out, test position is fixed, not fragile, have the independent test system of one's own, not affected by variation of ambient temperature, test signal is reliable and stable, safe ready is installed in operation, has realized strain of rock mass is measured to the purpose that can carry out long-term continuously Real-Time Monitoring.Each also recyclable recycling of independent strain testing unit, reduced testing cost.
The accompanying drawing explanation
According to the order of Figure of description provided by the invention, accompanying drawing is described as follows:
Fig. 1 is the overall work schematic diagram of invention;
The principle schematic of interconnected relationship between the physical construction that Fig. 2 is independent strain testing of the present invention unit and reading strain cache controller and mark ring;
Fig. 3 is reading strain cache controller electricity principle schematic of the present invention;
Fig. 4 is the three-dimensional side direction semisectional view of the novel mark ring of the present invention;
Fig. 5 is the three-dimensional axial of mark ring of the present invention;
The three-dimensional axial of the contact head that Fig. 6 is independence strain testing cell enclosure two end spherical shapes of the present invention;
Fig. 7, Fig. 8, Fig. 9, Figure 10 are respectively between the contact head of mark ring of the present invention and independent strain testing cell enclosure two end spherical shapes to enter and the mutual side-looking, the head-down position that contacts front and back are installed are concerned schematic diagram;
Figure 11 is that the position view contacted is installed with the last mark ring of rock mass hole inner top mutually in reading strain cache controller of the present invention, independent strain testing unit;
Figure 12 is invention independent strain testing unit electricity principle schematic.
Above-mentioned 12 schematic diagram have all been explained building form, principle of work and the installation of each position of most preferred embodiment of the present invention, the mutual relationship that connects, contacts.
Most preferred embodiment
In Fig. 1, Fig. 2, (1) be mark ring, (2) for mark ring spacing stay pipe, (3) for independent strain testing unit, (4) for non-cable data communication receiving/transmission device, (5) for reading strain cache controller, (6) at the mark annulate shaft to the middle part, position, its sagittal plane be equipped with two each other upper and lower cone seat dorsad, (7) in the rock mass hole, (8) for independent strain testing cell enclosure supports, (9) for independent strain testing unit shaft to two ends be respectively a spherical shape contact head, (10) are reading strain cache controller shell for wireless communication antenna, (11).
In Fig. 1, Fig. 2, reading strain buffer control unit (5) top outside the rock mass hole, can sequentially arrange some independent strain testings unit (3) between (7) each mark ring in the rock mass hole.
The present invention proposes a kind of like this strain of rock mass measurement mechanism of semifixed combination, this device is comprised of mark ring (1), mark ring spacing stay pipe (2), some independent strain testings with non-cable data communication receiving/transmission device (4) unit (3) and a reading strain cache controller with non-cable data communication receiving/transmission device (4) (5), at mark ring (1) axial location middle part, its sagittal plane is equipped with two upper and lower cone seats (6) dorsad each other, mark ring (1) two end is connected with measured distance stay pipe (2) respectively, and equidistantly to embed (7) in the rock mass hole, independent strain testing cell enclosure is a circular tube structure, this passive circular tube structure is called independent strain testing cell enclosure and supports (8) pipe, its axial two ends are respectively the contact head (9) of a spherical shape, two non-cable data communication receiving/transmission devices (4) are arranged on respectively the end on contact head (9) crown of its spherical shape, be placed in the contact head (9) of the spherical shape of (7) each independent strain testing cell enclosure two ends in the rock mass hole can be respectively with adjacent two mark rings on, lower cone seat (6) face is in contact with one another, non-cable data communication receiving/transmission device (4) between adjacent two independent strain testing unit (3) face to face from beginning to end, each independent strain testing unit (3) is sequentially by petrosal foramen bottom assembled arrangement between mark ring (1) respectively from below to up, until arrange under lower cone seat (6) face of last mark ring of (7) top in the rock mass hole, reading strain cache controller shell (11) bottom also becomes the contact head of a spherical shape, referring to Figure 11, be arranged on upper cone seat (6) face of last mark ring (1) of (7) top in the rock mass hole, two non-cable data communication receiving/transmission devices (4) are arranged in reading strain cache controller (5), one of them is arranged on the end on the spherical shape contact head crown, its shell (11) bottom, and with distance rock mass hole in (7) top independent strain testing unit (3) non-cable data communication receiving/transmission device (4) face to face, another is connected with the wireless communication antenna (10) that is positioned at reading strain cache controller shell (11) top.
Fig. 2, Figure 11, in Figure 12, (9) be the contact head of independent strain testing cell enclosure two end spherical shapes, (8) be that independent strain testing cell enclosure supports, (13) be coil tension spring, (14) be the contact head cradle head, (15) be the hook latch, (16) be micrometer, (17) be electronic signal conditioning and digital signal acquiring circuit plate, (18) be power supply, (19) be the movable measuring staff of micrometer, (20) be the micrometer shell, (21) be micrometer strain signal output terminal, (22) be the signal input part of electronic signal conditioning and digital signal acquiring circuit plate, (23) be electronic signal conditioning and digital acquisition circuit plate digital signal output end.
Independent strain testing of the present invention unit (3) by the contact head (9) of independent strain testing cell enclosure two end spherical shapes, independent strain testing cell enclosure support (8), coil tension spring (13), contact head cradle head (14), hook latch (15), micrometer (16), electronic signal conditioning and digital signal acquiring circuit plate (17), power supply (18) and with its with two non-cable data communication receiving/transmission devices (4) jointly form; Micrometer (16) adopts position coded magnetic displacement sensor to be advisable, and it is high that it has resolution, the advantage that reliability is good.Independent strain testing cell enclosure supports (8) and is formed by a plurality of pipe connection segments.One end of coil tension spring (13) supports (8) pipe with independent strain testing cell enclosure and is connected, the other end of coil tension spring (13) connects to the movable measuring staff of micrometer (16) (19), and micrometer shell (20) supports (8) pipe with independent strain testing cell enclosure and is connected.The contact head (9) of independent strain testing cell enclosure two end spherical shapes supports respectively the end of axial two of (8) pipe in independent strain testing cell enclosure, wherein one directly connects to contact head cradle head (14) one ends, its sagittal plane, end, crown inwardly has a hole vertically, referring to Fig. 6.Hook latch (15) and a non-cable data communication receiving/transmission device (4) are housed in hole, the other end of cradle head (14) connects to independent strain testing cell enclosure support (8) pipe, cradle head (14) is left-right rotation within the specific limits, referring to rotating shown in arrow in Fig. 7, Fig. 8, Figure 11.Coil tension spring (13) can be so that the scalable variation of length provide constant anchorage force between two mark rings between independent strain testing unit (3) two ends, and the length variations scope generally is greater than a mark ring cylinder height and is advisable.The contact head (9) that is placed in the spherical shape of (7) each independent strain testing cell enclosure two ends in the rock mass hole can be in contact with one another under constant anchorage force effect with adjacent two upper and lower cone seats of mark ring (6) face respectively.The other end of the contact head (9) of independent strain testing cell enclosure two end spherical shapes is directly supported (8) pipe other end with independent strain testing cell enclosure and is connected, its sagittal plane, end, crown inwardly also has a hole vertically, and another non-cable data communication receiving/transmission device (4) is housed in hole; Power supply (18) is connected and powers with micrometer (16), electronic signal conditioning and digital signal acquiring plate (17), non-cable data communication receiving/transmission device (4) respectively, the strain signal output terminal (21) of micrometer (16) is connected with the signal input part (22) of electronic signal conditioning and digital signal acquiring circuit plate (17), and electronic signal conditioning and digital signal acquiring circuit plate digital signal output end (23) are connected with two non-cable data communication receiving/transmission devices respectively; The strain signal that is positioned at each independent strain testing unit (3) micrometer (16) sensing between mark ring (1) becomes digital signal and is residing under the software control of circuit board in electronic signal conditioning and digital signal acquiring circuit plate (17) internal conversion, by its head and the tail position non-cable data communication receiving/transmission device (4) face to face, is sent to from inside to outside one by one the reading strain cache controller (5) be arranged in outside the rock mass hole.
Above-mentioned the present invention carrys out the device of measurement strain of rock mass of the semifixed combination of each mark interannular variable in distance of sensing with the some independent strain testing unit that micrometer is installed, and this installs independent strain testing cell enclosure and supports (8) and formed by a plurality of pipe connection segments, the scalable variation of length provide constant anchorage force between two mark rings (1) between its two end.Obviously, install micrometer shell (20) in it and the parts such as the movable measuring staff (19) of micrometer and coil tension spring (13) should adjacent with each segmentation respectively two sections support pipes (8) between because of its interconnect mutually to be connected certain interactional relation of setting up, the length that this interactively can guarantee its axial direction retractable within the specific limits moves and provides constant anchorage force, under the relation and function that the relative length variable quantity that these free-extensions move can connect at shell support (8) pipe of a plurality of segmentations, transmitted, thereby the micrometer (16) that can make to be arranged in independent strain testing unit (3) connects to the connection function relation, sensing the relative length variable quantity passed over by these.Just between above these parts, be interconnected and fixed shown in Fig. 2 and the principle schematic of transfer function relation, adopt common technology will be interconnected and fixed between these parts and the transfer function relation obtains specific implementation according to mechanical function of the present invention and test request.
In Fig. 3, (4) be non-cable data communication receiving/transmission device, (24) for CPU and memory buffer, (25) for power supply, (10), for wireless communication antenna, (26), be the input end of non-cable data communication receiving/transmission device data transmit-receive.
Reading strain cache controller (5) in the present invention consists of with two non-cable data communication receiving/transmission devices (4) and with CPU and memory buffer (24), power supply (25), wireless communication antenna (10) jointly it; Power supply (25) is connected with two non-cable data communication receiving/transmission devices (4), CPU and memory buffer (24) respectively, CPU and memory buffer (24) are connected with the input end (26) of two non-cable data communication receiving/transmission device data transmit-receives respectively, and one of them non-cable data communication receiving/transmission device (4) also directly is connected with wireless communication antenna (10); Under the software control that resides in CPU and memory buffer (24), the dump and the data that complete the strain testing data of all independent strain testings unit (3) in the rock mass hole outwards transmit, after other microcomputer is communicated with, can carry out network monitoring and management to test data.
Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, in Figure 11, (1) is mark ring circular cylinder body, (8) be that independent strain testing cell enclosure supports, (30) be mark ring cylinder two end radially inner sides, (6) are the upper and lower conical contact base of mark ring, and (27) are for being the petal-shaped sipes, (28) be the sipes brace table, (31) be narrow groove, (15) are the hook latch, and (4) are non-cable data communication receiving/transmission device, (29) be narrow key, (32) are for being the wide key of petal-shaped.Referring to Fig. 4, Fig. 5, wherein (6) are the upper and lower conical contact base of mark ring, (28) be the sipes brace table, be two kinds of different descriptions of same parts, though what the former emphasized is to be cut apart by the width groove, but pyramid type contact base integral body, the latter emphasizes be the part cut apart by the width groove of pyramid type contact base as brace table, they are being radially same work surface of contact.
Fig. 1, Fig. 2, Fig. 4, Fig. 5, Fig. 7, Fig. 8, Fig. 9, Figure 10, in Figure 11, mark ring (1) is a circular cylinder body, it is not recyclable in engineering is used, and large usage quantity, the present invention adopts hard lead die sinking die casting manufacture can make it cheap, mark ring spacing stay pipe (2) is the common PVC plastic tube, its two ends radial outside inserts respectively adjacent mark ring cylinder two end radially inner sides (30), mark ring (1) and mark ring spacing stay pipe (2) axially interconnect and support and pre-buried or be placed in (7) whitewashing rock mass hole in and fix, on the mark ring, lower conical contact base (6) face each other dorsad and lay respectively at two limits of the axial inner shafts of mark ring cylinder to 1/2nd places, be split into a plurality of petal-like taper surface sipes supporting stations (28) that are in its radial position, in the middle of each taper surface sipes supporting station (28), 1/2nd places have a narrow groove (31), on the mark ring, two circular cone heavy caliber faces of lower conical contact base (6) face are respectively towards axial two ends of mark ring circular cylinder body, and it radially is petal-like sipes (27), narrow groove (31) is parallel with mark ring cylinder axis direction respectively.
Fig. 1, Fig. 2, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, in Figure 12, independent strain testing cell enclosure two end spherical shape contact head (9) complex contours, adopt hard lead die sinking die casting manufacturing price cheap, be split into a plurality of petal-like wide keys (32) that are on its sagittal plane, a plurality of its axial planes of petal-like wide key (32) that are make independent strain testing cell enclosure two end spherical shape contact head (9) ends be rendered as respectively spherical that a petal-shaped distributes towards its sagittal plane sphere of formation, each is positioned at the wide key (32) that is spherical contact head, its radially 1/2nd positions its axially again projection one narrow key (29) be extended down to the axial end portion of spherical shape contact head (9), radially be the wide key (32) that a plurality of petal-shaped distribute, narrow key (29) is parallel with the shell stay pipe body axis direction of independent strain testing unit two end spherical shape contact heads (9) respectively, its spherical can be respectively with the mark ring on, lower contact base (6) is coned face sipes supporting station (28) and is in contact with one another, its narrow key (28) can slip into respectively on the mark ring, coordinate and contact among the narrow groove (31) of lower conical contact seat surface (6) and with it.The effect of wide key (32) is that the dome shape of its end contacts with sipes supporting station (28), make enter the mark ring between an end of independent strain testing unit can not move up and down, after the effect of narrow key (29) is to slip into narrow groove (31), can make the end of independent strain testing unit can left-right rotation.
In sum, the contact head (9) that is placed in the spherical shape of (7) each independent strain testing cell enclosure two ends in the rock mass hole can be in contact with one another with adjacent two upper and lower cone seats of mark ring (6) face respectively.Therefore, tested rock mass under external force, each mark ring (1) that is mounted on (7) in the rock mass hole between the strain signal that changes of relative distance can be by independent strain testing unit two end spherical shapes contact head (9) and each mark ring (1) between support close contact under the anchorage force effect that (8) pipe two ends produce by coil tension spring (13) in independent strain testing cell enclosure and go in being passed to each independent strain testing unit (3).Be installed on the independent strain testing cell enclosure that micrometer (16) in each independent strain testing unit (3) forms by itself and a plurality of pipe connection segment and support (8) pipe, the company of interconnecting between the parts such as coil tension spring (13) is to relation, can the Length Quantity of variable in distance between the contact head (9) of independent strain testing cell enclosure two end spherical shapes be transmitted, thereby sensing obtain each mark ring (1) between the strain signal that changes of relative distance, these signals can be sent to these detecting informations in computing machine and monitor processing with the wireless communication mode dump by reading strain cache controller (5) one by one by non-cable data communication receiving/transmission device (4) again, thereby the set semifixed mounting means of the present invention and the function of input have been completed.
The strain of rock mass measurement mechanism of the said a kind of semifixed combination of the present invention in use, each independent strain testing unit (3) need be placed between two mark rings (1), for the convenience that installation course is narrated, these two mark rings (1) are called or lower position mark ring (1).Before test, first must use the contact head (9) that inserts independent strain testing unit (3) shell two end spherical shapes with the connecting link of plug, be connected with hole inner hanging hook latch (15) along its head perforate, then send into (7) assigned address in the rock mass hole.Connecting link can lengthen according to the segmentation of rock mass hole depth, is carved with mark on connecting link corresponding with mark ring depth location pre-buried in the rock mass hole.Under free state, extension effect due to coil tension spring (13), the length of independent strain testing unit two ends is greater than the spacing between the mark ring of upper and lower parts, that is to say when (9) one of the contact heads of independent strain testing unit two end spherical shapes with position mark ring (1) under assigned address while contacting the top of Hai upper part, other end mark ring (1) position.Before sending into, need adjust contact head cradle head (14) angle position, make the contact head (9) of independent strain testing unit two end housing spherical shapes parallel along axis be petal-like wide key (32) on same angle position.While sending into, the wide key (32) that is the petal-shaped distribution on the contact head (9) of independent strain testing unit two end housing spherical shapes can be walked by the mark ring, be coned face in lower contact base (6) and be the sipes (27) that petal-shaped distributes, mark on connecting link approaches to be sent into while specifying mark ring (1) correspondence position, clockwise rotate again connecting link, make the contact head (9) of independent strain testing unit two end spherical shapes radially be the wide key (32) that a plurality of petal-shaped distribute, narrow key (29) respectively with the mark ring at lower position on, lower contact base (6) is coned face sipes supporting station (28) and is in contact with one another, its narrow key (29) can slip into respectively among the narrow groove (31) of lower position mark ring cone shape contact seat surface (6) and coordinate with it contact.Now, again connecting link is pushed down and is rotated counterclockwise simultaneously connecting link downwards, it can make the cradle head (14) in independent strain testing unit press the certain angle rotation, after coil tension spring (13) is compressed, independent strain testing unit two end relative lengths shorten, the wide key (32) of spherical the distribution in contact head (9) upper end of this upper end, independent strain testing unit spherical shape can be walked by the mark ring of upper part, lower contact base (6) is coned face and is petal-like sipes (27), arrive the below of this upper part mark ring (1), then clockwise rotate connecting link and allow coil tension spring (13) upwards freely uphold, contact head (9) upper end of these independent strain testing unit two end spherical shapes radially is the wide key (32) that a plurality of petal-shaped distribute, narrow key (29) is coned face sipes supporting station (28) with the lower contact base (6) of upper part mark ring (1) respectively and is in contact with one another, its narrow key (29) can slip into respectively under this upper part mark ring (1) among the narrow groove (31) of conical contact seat surface (6) and coordinate with it contact, now, this independent strain testing unit (3) firmly supports to settle and is fixed between two mark rings (1) under the expansion force effect of coil tension spring (13), as long as rotate counterclockwise connecting link and upwards extract, can break away from the hook latch (15) in independent strain testing unit, thereby complete an action of laying of independent strain testing unit (3) being inserted to (7) assigned address in the rock mass hole.This point can be found out from Fig. 7, Fig. 8, Fig. 9, Figure 10, Fig. 7, Fig. 9 have meaned that respectively a termination contact of independent strain testing unit (3) does not enter the state of mark ring (1) contact base (6) side-looking, head-down position, and Fig. 8, Figure 10 have meaned that respectively an end of independent strain testing unit (3) has entered the state of mark ring (1) contact base (6) side-looking, head-down position.As long as constantly repeat above-mentioned course of action, all independent strain testings unit (3) from bottom to top can be laid one by one and be fixed between each preset mark ring (1) of (7) in the rock mass hole.If by above-mentioned course of action contrary operation, also each independent strain testing unit (3) can be put out outside the rock mass hole one by one, make each independent strain testing unit (3) reusable, realized the said semifixed combination installation of the present invention, the single use cost will greatly reduce like this.
The independent strain testing of each after inserting unit, so long as just can not be moved out of outside the rock mass hole at the test job state, in fixing position work, in the rock mass hole, variation of ambient temperature is little always, very little on the test error impact.Each independent strain testing unit carries power-supply system, the general lithium battery that adopts, it is better that charging once should be able to guarantee that the continuous working time limit reached on several months and even 1 year, be conducive to like this to strain of rock mass information carry out for a long time, continuity, Real-Time Monitoring incessantly.If in the rock mass hole, (7) have water or mud, non-cable data communication receiving/transmission device (4) will can not adopt digital infrared serial communication or digital radio serial communication transceiver, now should adopt a kind of digital audio serial communication transceiver of the another statement of the non-cable data communication receiving/transmission of the present invention device (4) to complete the data transmission work between independent strain testing unit.Digital audio technique is a kind of digital signal to be converted to acoustic vibration signal, or is converted to the technology of digital signal by acoustic vibration signal again, and acoustic signals can be propagated in water or mud, and infrared and wireless signal can not.The present invention only only requires that acoustic signals propagates the distance less than ten centimetres far away in water or mud, so adopt digital audio serial communication transceiver to implement technically not so difficult.Adopting digital audio serial communication transceiver may be more suitable for the data under complex environment in the rock mass hole transmits.The more aobvious advantage of test that the strain detection testing device of this semifixed combination distributes to axial force of foundation pile, all frictional resistances of stake.So-called axial force of foundation pile, the all frictional resistance distribution tests of stake, be foundation pile vertically sequentially imbed mark ring (1) and between spacing stay pipe (2) grouting fixing, each independent strain testing unit (3) sequentially from bottom to top insert the mark ring between fixing, until top, foundation pile top, placing after reading strain cache controller (5) and wireless communication antenna (10) just can be to foundation pile load application step by step, the data of each independent strain testing unit (3) test are through non-cable data communication receiving/transmission device (4), constantly import microcomputer into after reading strain cache controller (5) transmission dump, can show in real time that foundation pile is under loading condition step by step, the corresponding relation figure of different depth position and strain, namely from position, load, the strain triadic relation draws axial force of foundation pile, the all frictional resistance distribution schematic diagrams of stake.After having tested, each independent strain testing unit (3) can sequentially take out from top to down one by one along aperture again, and reuse next time.
In the present invention; so long as adopt non-wired or non-be in direct contact with realize data-transformation facility between each independent strain testing unit the serial data communication transceiver all within protection domain of the present invention; it can be the infrared serial communication transceiver of a kind of numeral; can be a kind of digital radio serial communication transceiver that contains built-in antenna, can be also a kind of digital audio serial communication transceiver.Therefore in the present invention, only have by above-mentioned digital serial communication transmitting-receiving mode and by non-cable data communication receiving/transmission device (4), could between each independent strain testing unit, transmit one by one the task that test data sends earthward, and complete without stube cable, improved functional reliability.During due to work, be installed between the non-cable data communication receiving/transmission device (4) of each independent strain testing unit two ends only several centimetres of distances, its head and the tail again face to face, therefore it is not high to above-mentioned these transponder chip function technical requirements, moreover be all below existing mature technology, its chip can directly have been bought on market, thereby realizes that its technical functionality is easy, cheap.
More than the embodiment of the best of the present invention.
In sum, the measurement strain of rock mass device of this semifixed combination that the present invention proposes is for embedded strain gauge and slidingtype micrometer, no matter be on the fixed installation mode, on work test effect, or aspect information system management and control, technical haveing breakthrough, have more remarkable advantage, especially be applied in engineering project disaster, the geo-hazard early-warning forecast, the construction monitoring management, significant in the fields such as engineering quality supervision and management, believe that the present invention has application prospect more widely.
Claims (5)
1. utilize the mark ring equidistantly to embed in the rock mass hole, the measurement strain of rock mass device of a kind of semifixed combination of each mark interannular variable in distance of some independent strain testing unit senses by micrometer is installed, is characterized in that this device is comprised of mark ring, mark ring spacing stay pipe, some independent strain testing unit with non-cable data communication receiving/transmission device and a reading strain cache controller with non-cable data communication receiving/transmission device; At the mark annulate shaft, to position middle part, its sagittal plane is equipped with two upper and lower cone seats dorsad each other, and mark ring two ends are connected with mark ring spacing stay pipe respectively, and equidistantly to embed in the rock mass hole; independent strain testing cell enclosure is a circular tube structure, its axial two ends are respectively the contact head of a spherical shape, two non-cable data communication receiving/transmission devices are arranged on respectively the end, the contact head crown of its spherical shape, be placed in the contact head of the spherical shape of each independent strain testing cell enclosure two ends in the rock mass hole can be respectively with adjacent two mark rings on, lower conical seat surface is in contact with one another, non-cable data communication receiving/transmission device between adjacent two independent strain testing unit face to face from beginning to end, each independent strain testing unit is sequentially by petrosal foramen bottom assembled arrangement between the mark ring respectively from below to up, until arrange under the lower conical seat surface of rock mass hole last mark ring of inner top, reading strain cache controller outer casing bottom also becomes the contact head of a spherical shape and is arranged on the upper conical seat surface of rock mass hole last mark ring of inner top, two non-cable data communication receiving/transmission devices are arranged in the reading strain cache controller, one of them is arranged on the end, the crown of its outer casing bottom spherical shape contact head, and with the non-cable data communication receiving/transmission device of the independent strain testing unit of distance rock mass hole inner top face to face, another is connected with the wireless communication antenna that is positioned at reading strain cache controller shell upper.
2. measurement strain of rock mass device according to claim 1, it is characterized in that with the independent strain testing unit of non-cable data communication receiving/transmission device by the contact head of cell enclosure two end spherical shapes, the support of independent strain testing cell enclosure, coil tension spring, contact head cradle head, hook latch, micrometer, electronic signal conditioning and digital signal acquiring circuit plate, power supply and with its with two non-cable data communication receiving/transmission devices jointly form, independent strain testing cell enclosure supports and is formed by a plurality of pipe connection segments, one end of coil tension spring supports pipe with independent strain testing cell enclosure and is connected, the other end of coil tension spring connects to the movable measuring staff of micrometer, the micrometer shell supports pipe with independent strain testing cell enclosure and is connected, the contact head of independent strain testing cell enclosure two end spherical shapes is arranged on respectively the end that independent strain testing cell enclosure supports axial two of pipe, wherein one directly connects to contact head cradle head one end, its sagittal plane, end, crown inwardly has a hole vertically, hook latch and one of them non-cable data communication receiving/transmission device are housed in hole, the other end of cradle head connects to independent strain testing cell enclosure support pipe, the other end of independent strain testing cell enclosure two end spherical shape contact heads is directly supported the pipe other end with independent strain testing cell enclosure and is connected, its sagittal plane, end, crown inwardly also has a hole vertically, another non-cable data communication receiving/transmission device is housed in hole, power supply is connected and powers with micrometer, electronic signal conditioning and digital signal acquiring circuit plate, non-cable data communication receiving/transmission device respectively, the strain signal output terminal of micrometer is connected with the signal input part of electronic signal conditioning and digital signal acquiring circuit plate, and electronic signal conditioning and digital signal acquiring circuit plate digital output end are connected with two non-cable data communication receiving/transmission devices respectively, the strain signal of each independent strain testing unit micrometer sensing that is positioned at the mark interannular is in electronic signal conditioning and the internal conversion of digital signal acquiring circuit plate becomes digital signal and, under resident software control within it, by its head and the tail position non-cable data communication receiving/transmission device face to face, be sent to from inside to outside one by one the reading strain cache controller be arranged in outside the rock mass hole.
3. measurement strain of rock mass device according to claim 1, it is characterized in that this reading strain cache controller with non-cable data communication receiving/transmission device by its with two non-cable data communication receiving/transmission devices and with CPU and memory buffer, power supply, wireless communication antenna, jointly form; Power supply is respectively with wherein two non-cable data communication receiving/transmission devices, CPU and memory buffer are connected, CPU and memory buffer are connected with the input end of two non-cable data communication receiving/transmission device data transmit-receives respectively, and one of them non-cable data communication receiving/transmission device also is connected with wireless communication antenna; Under the software control that resides in CPU and memory buffer, complete dump and the outside function transmitted of data to the strain testing data of all independent strain testings unit in the rock mass hole.
4. measurement strain of rock mass device according to claim 1, it is characterized in that the mark ring is a circular cylinder body, mark ring spacing stay pipe two end radial outsides insert respectively adjacent mark ring cylinder two end radially inner sides, mark ring and mark ring spacing stay pipe axially interconnect and support and pre-buried or be placed in the whitewashing rock mass hole in and fix, on the mark ring, lower conical contact seat surface each other dorsad and lay respectively at two limits of the axial inner shafts of mark ring cylinder to 1/2nd places, be split into a plurality of petal-like taper surface sipes supporting stations that are in its radial position, in the middle of each taper surface sipes supporting station, 1/2nd places have a narrow groove, on the mark ring, two circular cone heavy caliber faces of lower conical contact seat surface are respectively towards axial two ends of mark ring circular cylinder body, on its sagittal plane, be petal-like wide, narrow groove is parallel with mark ring cylinder axis direction respectively.
5. measurement strain of rock mass device according to claim 1, it is characterized in that being split into a plurality of petal-like wide keys that are on its sagittal planes of contact head of independent strain testing cell enclosure two end spherical shapes, a plurality ofly be petal-like its axial plane of wide key and form a sphere towards its sagittal plane and make the contact head end of independent strain testing cell enclosure two end spherical shapes be rendered as respectively spherical that a petal-shaped distributes, each is positioned at the wide key of the contact head that is spherical shape, its radially 1/2nd positions its axially again projection one narrow key be extended down to the axial end portion of spherical shape contact head, radially be wide that a plurality of petal-shaped distribute, narrow key is parallel with the shell stay pipe body axis direction of the contact head of independent strain testing unit two end spherical shapes respectively, its spherical can be respectively with the mark ring on, lower contact base is coned face sipes supporting station and is in contact with one another, its narrow key can slip into respectively on mark, also coordinate with it contact among the narrow groove of lower conical contact seat surface.
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| CN201010256216.6A CN101949679B (en) | 2010-08-18 | 2010-08-18 | Half-fixed and combined rock strain measuring device |
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| CN201010256216.6A CN101949679B (en) | 2010-08-18 | 2010-08-18 | Half-fixed and combined rock strain measuring device |
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| CN101949679B true CN101949679B (en) | 2014-01-08 |
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| CN106197175B (en) * | 2016-08-03 | 2017-12-08 | 中北大学 | Propellant charge strain and displacement integrated measurer under high overload |
| CN108168966B (en) * | 2017-11-30 | 2020-07-21 | 金堆城钼业股份有限公司 | Device and method for manufacturing molybdenum and molybdenum alloy pipe tensile sample gauge length line |
| CN114674208B (en) * | 2022-03-28 | 2023-11-24 | 南京斯比特电子科技有限公司 | Digital strain gauge |
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| CN201917329U (en) * | 2010-08-18 | 2011-08-03 | 武汉华岩电子有限责任公司 | Semi-fixed combined device for measuring rock mass strain |
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| JP4671994B2 (en) * | 2007-08-27 | 2011-04-20 | 東日本旅客鉄道株式会社 | Measurement management method of link displacement meter |
| CN201133883Y (en) * | 2007-11-14 | 2008-10-15 | 中国科学院武汉岩土力学研究所 | Deep borehole rock mass distortion tester |
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| US3894427A (en) * | 1971-12-07 | 1975-07-15 | Bergwerksverband Gmbh | Device for measuring changes in converging rock formations in a mining cavity |
| CN2398609Y (en) * | 1999-12-16 | 2000-09-27 | 中国科学院武汉岩土力学研究所 | Sliding deforming meter dragline type test operating system |
| CN201096577Y (en) * | 2007-07-26 | 2008-08-06 | 宁波柯力电气制造有限公司 | Spherical face point contact type pressing sensor device possessing base |
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Effective date of registration: 20140504 Address after: 430074, No. 27, No. 2, No. second, Fuxing Fuxing Pharmaceutical Park, No. 62, Optics Valley Road, East Lake New Technology Development Zone, Hubei, Wuhan Patentee after: Wuhan Yanhai Engineering Tech. Co., Ltd. Address before: 430074 Hubei city of Wuhan province Wuchang Optics Valley Avenue International Business Center habitat block A No. 102 Patentee before: Huayan Electronic Co., Ltd, Wuhan |