CN106546359A - A kind of surrouding rock stress measuring system - Google Patents

A kind of surrouding rock stress measuring system Download PDF

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Publication number
CN106546359A
CN106546359A CN201611050998.1A CN201611050998A CN106546359A CN 106546359 A CN106546359 A CN 106546359A CN 201611050998 A CN201611050998 A CN 201611050998A CN 106546359 A CN106546359 A CN 106546359A
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CN
China
Prior art keywords
guide rod
stressometer
cylinder
guide
surrouding rock
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CN201611050998.1A
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Chinese (zh)
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CN106546359B (en
Inventor
王旭锋
张东升
王文强
曹文豪
秦冬冬
李鹏
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中国矿业大学
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Priority to CN201611050998.1A priority Critical patent/CN106546359B/en
Publication of CN106546359A publication Critical patent/CN106546359A/en
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Publication of CN106546359B publication Critical patent/CN106546359B/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00Measuring force or stress, in general
    • G01L1/02Measuring force or stress, in general by hydraulic or pneumatic means

Abstract

The invention discloses a kind of surrouding rock stress measuring system, stressometer body, installation guide rod and display instrument electricity box;Pressure block and stressometer fixing device are additionally provided with stressometer body;Stressometer fixing device includes guide rod installing hole, positional cylinder, guide channel;Installing guide rod includes being oriented to guide rod and connection guide;The front end for being oriented to guide rod is provided with positioning shaft end, and the position for positioning shaft end correspondence guide channel is provided with the shop bolt by the scalable control of pushing handle telescopic control mechanism;Display instrument case includes controller, display screen, hydraulic power unit, hydraulic control valve group, pressure block control loop, positional cylinder control loop, stress numerical collection counter circuit.This surrouding rock stress measuring system can be realized position state of the accurate identified sign meter body in drilling and position, and then realize reducing because of deflection of borehole to greatest extent and insert measure error, the accurate measurement surrouding rock stress of realization that surrouding rock stress timing axial deflection is caused, it is particularly well-suited to the deep hole data acquisition and monitoring of colliery mining induced stress.

Description

A kind of surrouding rock stress measuring system
Technical field
The present invention relates to a kind of stress measurement system, specifically a kind of surrouding rock stress measurement system suitable for underground coal mine System, belongs to rock mass of coal mine stress measurement technical field.
Background technology
The measurement of crustal stress and application no matter on tectonic geology, earthquake prediction and geodynamic study, or in ore deposit More and more important effect is served in the production practices such as mountain exploitation, underground engineering and energy development, is increasingly subject to both at home and abroad Academia and the attention of engineering circles.
For mining, dig tunnel and carry out exploiting work and be referred to as adopting to coal or country rock, adopt after occurring The stress equilibrium state of in situ rock mass is destroyed, causes the stress inside rock mass to redistribute, the stress of redistribution exceedes coal, rock Ultimate strength when can make tunnel or the coal around coal-face, rock that destruction occurs, and to mined out movement, until being formed New stress equilibrium state, the power during country rock is acted on when adopting and on supporting thing become mining induced stress, and mining induced stress may be led Cause roof be caving with destroy, the general mine pressure phenomenon such as support is lost, side fall roof, pucking, it is also possible to cause punching Hit ore deposit pressure, top board large area to press, rock burst, ore deposit shake, coal and gas prominent, earth's surface the big mine power phenomenon such as subside suddenly, Mining induced stress correspondence mining stress field, accurately finds out temporal and spatial evolution of the mining stress field in coal and rock recovery process to commenting Valency and prediction mine pressure phenomenon, mine power phenomenon all have and are of great significance.
The collection of mining induced stress in prior art is being intended surveying the coal or rock mass of stress generally using drilling surrouding rock stress meter Stressometer is inserted by installation guide rod after upper drilling carries out stress numerical collection, but often drills because drilling plane is uneven or drilling When the reason such as unbalance stress cause drilling to deviate predetermined direction, drilling depth is deeper to deviate more notable, especially with horizontal mask The inclined drill for having certain angle is less susceptible to ensure boring direction, and then easily causes the surveyed stress of surrouding rock stress meter non-required The stress in direction is sought, boring direction more deviates, deeper the surveyed stress error of drilling depth is bigger, so as to easily cause factor value Deviation produces error in judgement;In addition, traditional surrouding rock stress meter is difficult accurately to ensure that country rock should during inserting in drilling The position state of power meter, the more deep this position state of drilling change more wayward, and then further result in the dynamometry direction of surrouding rock stress meter Deviation is produced with default direction and causes stress data acquisition error;Meanwhile, surrouding rock stress meter is generally using the knot of quick connection Structure is attached with guide rod is installed, and after surrouding rock stress meter is in place easily causes surrouding rock stress meter with installing when guide rod is separated The change of position state, in turn result in measure error, according to surrouding rock stress meter and the unseparated structure of guide rod is installed then not only installs Guide rod reusability is low, measurement cost is high, and because the own wt reason for installing guide rod can affect measurement to a certain extent Accurately.
The content of the invention
For the problems referred to above, the present invention provides a kind of surrouding rock stress measuring system, it is possible to achieve accurate identified sign meter sheet Position state of the body in drilling is simultaneously positioned, and then is realized reducing because of deflection of borehole to greatest extent and inserted surrouding rock stress timing axial direction Measure error, the accurate measurement surrouding rock stress of realization for causing is deflected, the deep hole data acquisition of colliery mining induced stress is particularly well-suited to And monitoring.
For achieving the above object, this surrouding rock stress measuring system includes stressometer body, installs guide rod and display instrument electricity box;
Integrally in cylinder, its front end is arranged to pyramidal structure to described stressometer body, and stressometer body interior is provided with Pressure pocket, is additionally provided with pressure block and stressometer fixing device on stressometer body;Pressure block passes through on stressometer body radially The guide frame sealing that direction is arranged is embedded on stressometer body, and the built-in end of pressure block and holding for stressometer body interior The connection of pressure chamber;Stressometer fixing device is arranged on the rear end of stressometer body, and the shaft core position of stressometer fixing device is vertically Direction is provided with guide rod installing hole, at least provided with two positional cylinders that radially direction is arranged inside stressometer fixing device, fixed The piston end of position cylinder is outwards arranged, and piston end is provided with pilot pin, and the positional cylinder of inner side is just being pointed in guide rod installing hole Cylinder bottom end position is provided with guide channel radially arranging, extending to the cylinder bottom end of positional cylinder;
Described installation guide rod includes being oriented to guide rod and connection guide;The front end for being oriented to guide rod is provided with and guide rod installing hole chi The positioning shaft end of very little cooperation, position shaft end correspondence guide channel position be provided with it is that radially direction is arranged, by flexible control The shop bolt of the scalable control of mechanism processed, the outside dimension of shop bolt are coordinated with the internal diameter size of guide channel, and guiding is led Gravity sensor is additionally provided with bar, the rear end for being oriented to guide rod is provided with fast connector;Connection guide sets at least to one, connection The front end of guide rod is provided with the fast joint structure coordinated with the fast connector for being oriented to guide rod, and the rear end of connection guide also is provided with soon Rapid joint;
Described display instrument case includes that controller, display screen, hydraulic power unit, hydraulic control valve group, pressure block are controlled back Road, positional cylinder control loop, stress numerical collection counter circuit, controller respectively with display screen, hydraulic power unit, hydraulic control valve Group electrical connection, hydraulic power unit are tightly connected with the pressure pocket of stressometer body by hydraulic control valve group and fluid pressure line, are controlled Device is connected with stressometer fixing device respectively.
As the preferred version of the present invention, described positional cylinder using pneumatically or hydraulically controlling, described guide channel with The pilot ports open position at the cylinder bottom end insertion of positional cylinder and the cylinder bottom end of positional cylinder is provided with normally closed unidirectional elastic leather plug;Institute Length dimension of the length dimension of the shop bolt stated more than guide channel.
Used as a kind of control embodiment of positional cylinder of the present invention, the cylinder bottom end of described positional cylinder is by extending out to outside Fluid pressure line be connected with the hydraulic control valve group of display instrument electricity box, and fluid pressure line and positional cylinder cylinder bottom end connection position In the coverage of normally closed unidirectional elastic leather plug.
Scheme as a further improvement on the present invention, the cylinder bottom end of described positional cylinder is by extending out to the pneumatic tube of outside Road and pneumatic control valve group are connected with pressure gas source, and the position of the cylinder bottom end connection of pneumatic line and positional cylinder is located at normally closed list Into the coverage of elastic leather plug, the controller of described display instrument electricity box is electrically connected with pneumatic control valve group.
As a kind of embodiment of the pushing handle telescopic control mechanism of shop bolt of the present invention, the flexible control of described shop bolt Mechanism processed is pure mechanic structure, including ejector spring and haulage cable;The position of ejector spring correspondence shop bolt is arranged on It is oriented in the positioning shaft end of guide rod;One end of haulage cable is connected with the bottom of the described shop bolt for radially arranging Connect, the other end is extend out to outside guiding guide rod.
As the another embodiment of the pushing handle telescopic control mechanism of shop bolt of the present invention, described shop bolt it is flexible Controlling organization is bi-directional expansion cylinder, and described shop bolt is arranged on the piston end of bi-directional expansion cylinder, and bi-directional expansion cylinder passes through Fluid pressure line is connected with the hydraulic control valve group of display instrument electricity box.
Scheme, is additionally provided with circumferential angle feed-back sensor on described guiding guide rod as a further improvement on the present invention, Circumferential angle feed-back sensor is electrically connected with the controller of described display instrument electricity box.
Scheme as a further improvement on the present invention, described gravity sensor and circumferential angle feed-back sensor are embedded in It is oriented to inside guide rod, and gravity sensor and circumferential angle feed-back sensor is respectively positioned on the front portion for being oriented to guide rod.
As a further improvement on the present invention on the outer wall of scheme, described guiding guide rod and connection guide in axial direction It is provided with the groove of correspondence connection.
Compared with prior art, the stressometer body of this surrouding rock stress measuring system is due to being provided with the stress including positional cylinder Meter fixing device, the piston end of positional cylinder are provided with pilot pin, therefore stressometer body are inserted logical behind setting position in drilling That crosses control positional cylinder stretches out the strong fix for making that stressometer body is capable of achieving on pilot pin insertion borehole wall;Due to positioning The pilot ports open position at the cylinder bottom end of cylinder is provided with normally closed unidirectional elastic leather plug, and guiding guide rod is provided with by extension and contraction control The shop bolt of the scalable control of mechanism, therefore can realize that stressometer body is led with guiding by controlling the flexible of shop bolt The connection of bar, is additionally, since the length dimension of the length dimension more than guide channel of shop bolt, therefore shop bolt is entrapped in Also while normally closed unidirectional elastic leather plug is backed down while completing to be located by connecting in guide channel, that is, simultaneously turn on positional cylinder, just In stretching out for control positional cylinder;Due to being provided with gravity sensor, therefore the real angle and default angle of drilling had both been made to have one Determine error, the pressure of preset direction can also be tried to achieve by the pressure value and angle value for obtaining according to force resolution, and then further Ensure the accuracy of measurement data, realization reduces because of deflection of borehole to greatest extent and inserts surrouding rock stress timing axial deflection and make Into measure error, realize accurately measurement surrouding rock stress, be particularly well-suited to the deep hole data acquisition and monitoring of colliery mining induced stress.
Description of the drawings
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the A-A sectional views of Fig. 1;
Fig. 3 is the structural representation that the present invention installs guide rod;
Fig. 4 is the B direction views of Fig. 3;
Schematic diagram when Fig. 5 is working condition of the present invention.
In figure:1st, stressometer body, 2, guide rod is installed, 21, be oriented to guide rod, 22, connection guide, 23, shop bolt, 24, Gravity sensor, 3, display instrument electricity box, 4, pressure block, 5, stressometer fixing device, 51, guide rod installing hole, 52, positional cylinder, 53, Guide channel, 54, normally closed unidirectional elastic leather plug.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings, and (direction inserted in drilling with stressometer body 1 below is Front description).
As shown in figure 1, this surrouding rock stress measuring system includes stressometer body 1, installs guide rod 2 and display instrument electricity box 3.
Described stressometer body 1 is overall in cylinder, and its front end is arranged to pyramidal structure, is easy to advance into drilling, Pressure pocket is provided with inside stressometer body 1, pressure block 4 and stressometer fixing device 5 on stressometer body 1, is additionally provided with;Pressure block 4 Be embedded on stressometer body 1 by the sealing of the guide frame that radially arranges on stressometer body 1, and pressure block 4 Built-in end is connected with the pressure pocket inside stressometer body 1;Stressometer fixing device 5 is arranged on the rear end of stressometer body 1, such as Shown in Fig. 2, the shaft core position of stressometer fixing device 5 is in axial direction provided with guide rod installing hole 51, in stressometer fixing device 5 Portion at least provided with two positional cylinders 52 that radially direction is arranged, the piston end of positional cylinder 52 outwards arranges, and piston end on Pilot pin is provided with, the cylinder bottom end positioned at the positional cylinder 52 of inner side is installed with guide rod by the guide channel 53 for radially arranging Hole 51 connects, and 53 aperture position of guide channel at the cylinder bottom end of positional cylinder 52 is provided with normally closed unidirectional elastic leather plug 54, normal shape During state, normally closed unidirectional elastic leather plug 54 is closed, the piston end of positional cylinder 52 is in retraction state.
As shown in figure 3, described installation guide rod 2 includes being oriented to guide rod 21 and connection guide 22;It is oriented to the front end of guide rod 21 The positioning shaft end with 51 dimensional fits of guide rod installing hole is provided with, the position for positioning shaft end correspondence guide channel 53 is provided with radially It is that direction is arranged, by the shop bolt 23 of the scalable control of pushing handle telescopic control mechanism, the outside dimension of shop bolt 23 be oriented to The internal diameter size of passage 53 coordinates, and the length dimension of shop bolt 23 is oriented to guide rod 21 more than the length dimension of guide channel 53 On be additionally provided with gravity sensor 24, the rear end for being oriented to guide rod 21 is provided with fast connector;Connection guide 22 sets at least to one, The front end of connection guide 22 is provided with the fast joint structure coordinated with the fast connector for being oriented to guide rod 21, after connection guide 22 End also is provided with fast connector.
Described display instrument electricity box 3 include that controller, display screen, hydraulic power unit, hydraulic control valve group, pressure block are controlled back Road, positional cylinder control loop, stress numerical collection counter circuit, controller respectively with display screen, hydraulic power unit, hydraulic control valve Group electrical connection, hydraulic power unit are tightly connected with the pressure pocket of stressometer body 1 by hydraulic control valve group and fluid pressure line, are controlled Device is connected with stressometer fixing device 5 respectively.
Generally mining induced stress is to gather the downward surrouding rock stress of vertical direction, that is, need to ensure the pressure-bearing of drilling surrouding rock stress meter Block is located at the top of stressometer body to ensure the accuracy of gathered data, and this surrouding rock stress measuring system is used in underground coal mine When, as shown in figure 5, stressometer body 1 is inserted in the positioning shaft end for first controlling 23 retraction of shop bolt and being directed to 21 front end of guide rod In the guide rod installing hole 51 of the stressometer fixing device 5 of rear end, rotary steering guide rod 21 makes shop bolt 23 align guide channel 53 and upspring and be entrapped in guide channel 53, that is, complete stressometer body 1 and be oriented to the connection of guide rod 21, now shop bolt 23 Simultaneously normally closed unidirectional elastic leather plug 54 is backed down;Then stressometer body 1 is sent in the drilling being drilled, it is and deep according to drilling Degree is being oriented to 21 rear end of guide rod installation connection guide 22 until stressometer body 1 is bored to foot of hole setting position for level Hole, guide rod is installed in the angles of display value rotation during feeding by observing on 3 display screen of display instrument electricity box carries out coarse regulation position State makes angle be maintained at 0 °, for inclined drill, by observing the angles of display on 3 display screen of display instrument electricity box during feeding Value is rotated to be installed guide rod and carries out that coarse adjustment position state is whole to make angle be maintained at the minimum of a value in fluctuation range;Treat that stressometer body 1 is put into Bottom hole after adjusting a state, the piston end for controlling positional cylinder 52 stretches out, and completes to stress on pilot pin insertion borehole wall The positioning of meter body 1;Then control hydraulic power unit to oiling in the pressure pocket of stressometer body 1 make pressure block 4 eject and with brill Hole hole wall patch merga pass hydraulic control valve group pressurize, after waiting country rock compacting, can be real on 3 display screen of display instrument electricity box When show stress numerical, for inclined drill, according to geometrical relationship, gained minimum angles value is that pressure measurement plane and horizontal plane are formed Dihedral angle, this angle is the angle between drilling and horizontal plane, and the real angle of drilling and default angle have necessarily Error, by the pressure value and angle value that obtain, can try to achieve the pressure of preset direction according to force resolution;Alignment pin is controlled finally 23 retractions are followed closely, and are oriented to guide rod 21 and separable state are in stressometer body 1, extract out and guide rod 2 is installed.
Described positional cylinder 52 can be using automatically controlled flexible, it would however also be possible to employ pneumatic control or hydraulic control, due to coal There is requirement of explosion proof, therefore preferably pneumatic control or hydraulic control, i.e. as the preferred version of the present invention, described under mine Positional cylinder 52 using pneumatically or hydraulically controlling.
Used as a kind of control embodiment of positional cylinder of the present invention 52, the cylinder bottom end of described positional cylinder 52 passes through to extend out to Outside fluid pressure line is connected with the hydraulic control valve group of display instrument electricity box 3, and the cylinder bottom end of fluid pressure line and positional cylinder 52 connects The position for connecing is located in the coverage of normally closed unidirectional elastic leather plug 54;When stressometer body 1 is put into bottom hole and adjusts a state Afterwards, now the state that pin 23 is backed down is positioned as normally closed unidirectional elastic leather plug 54 is in, therefore can directly control hydraulic pressure control Valve group processed is injected hydraulic oil into positional cylinder 52 and ejects its piston end.
If positional cylinder 52 adopts hydraulic control, as the piston end of positional cylinder 52 is ejected after positioning without carrying out retraction again Control, and control can there be the hydraulic pressure without use again all the time in positional cylinder 52 after guide rod 2 is installed in 23 retraction of shop bolt, extraction Oil causes to waste, and in turn results in gradually decreasing for hydraulic system hydraulic oil, according to pneumatic control then without considering waste problem, And underground coal mine source of the gas is abundant, accordingly, as further improvement of the present invention scheme, the cylinder bottom end of described positional cylinder 52 leads to Cross and extend out to the pneumatic line and pneumatic control valve group of outside and be connected with pressure gas source, and the cylinder bottom of pneumatic line and positional cylinder 52 The position of end connection is located in the coverage of normally closed unidirectional elastic leather plug 54, the controller and gas of described display instrument electricity box 3 Dynamic control valve group electrical connection.
Used as a kind of embodiment of the pushing handle telescopic control mechanism of shop bolt of the present invention 23, described shop bolt 23 is stretched Contracting controlling organization is pure mechanic structure, including ejector spring and haulage cable;The position of ejector spring correspondence shop bolt 23 It is arranged on and is oriented in the positioning shaft end of guide rod 21, lax shape of the ejector spring in shop bolt 23 is ejected during normal condition State;One end of haulage cable is connected with the bottom of the described shop bolt 23 for radially arranging, the other end extend out to It is oriented to outside guide rod 21;Can realize that ejector spring is compressed in 23 bottom of shop bolt by pulling haulage cable, and then realize The retraction of shop bolt 23.
As the another embodiment of the pushing handle telescopic control mechanism of shop bolt of the present invention 23, described shop bolt 23 Pushing handle telescopic control mechanism is bi-directional expansion cylinder, and described shop bolt 23 is arranged on the piston end of bi-directional expansion cylinder, bi-directional expansion Cylinder is connected with the hydraulic control valve group of display instrument electricity box 3 by fluid pressure line;Can by controlling the bi-directional expansion of bi-directional expansion cylinder To realize stretching out or retraction for shop bolt 23.
It is for the axial-rotation angle for further accurately showing stressometer body 1, square as a further improvement on the present invention Case, is additionally provided with circumferential angle feed-back sensor, circumferential angle feed-back sensor and described display on described guiding guide rod 21 The controller electrical connection of instrument box 3, stressometer body 1 can be by circumferential angle feed-back sensor visual feedbacks after inserting in drilling The axial-rotation angle of stressometer body 1.
In order to prevent during stressometer body 1 is inserted in drilling borehole wall to gravity sensor 24 and circumferential angle Degree feedback transducer causes to scratch, and ensures the accuracy of gravity sensor 24 and circumferential angle feed-back sensor gathered data, Scheme as a further improvement on the present invention, described gravity sensor 24 and circumferential angle feed-back sensor are embedded in guiding and lead Inside bar 21, and gravity sensor 24 and circumferential angle feed-back sensor are respectively positioned on the front portion for being oriented to guide rod 21.
Install during in order to avoid entering stressometer body 1 to embedded in hole between the outer wall and borehole wall of guide rod 2 Gap it is too small cause to fluid pressure line and electric connection line extruding, scheme as a further improvement on the present invention, as shown in figure 4, Described being oriented to guide rod 21 and be in axial direction provided with the outer wall of connection guide 22 corresponds to the groove for connecting, and groove can accommodate liquid Pressure pipe road and electric connection line, and then prevent which to be extruded destruction.
The stressometer body 1 of this surrouding rock stress measuring system due to being provided with the stressometer fixing device 5 including positional cylinder 52, The piston end of positional cylinder 52 is provided with pilot pin, therefore is determined by control after stressometer body 1 is inserted the interior setting position of drilling Stretching out for position cylinder 52 makes pilot pin insert the strong fix that stressometer body 1 is capable of achieving on borehole wall;Due to positional cylinder 52 53 aperture position of guide channel at cylinder bottom end be provided with normally closed unidirectional elastic leather plug 54, and be oriented to guide rod 21 and be provided with by flexible The shop bolt 23 of the scalable control of controlling organization, therefore stressometer body can be realized by controlling the flexible of shop bolt 23 1 is more than the length dimension of guide channel 53 with the connection for being oriented to guide rod 21, the length dimension for being additionally, since shop bolt 23, because This shop bolt 23 is entrapped in while completing to be located by connecting in guide channel 53 also while normally closed unidirectional elastic leather plug 54 is pushed up Open, that is, simultaneously turn on positional cylinder 52, be easy to control stretching out for positional cylinder 52;Due to being provided with gravity sensor 24, therefore brill was both made The real angle in hole and default angle have certain error, can also be asked according to force resolution by the pressure value and angle value that obtain Preset direction pressure, and then be further ensured that the accuracy of measurement data, realization reduces to greatest extent because of deflection of borehole With insert measure error that surrouding rock stress timing axial deflection causes, realize accurately measurement surrouding rock stress, be particularly well-suited to colliery The deep hole data acquisition of mining induced stress and monitoring.

Claims (9)

1. a kind of surrouding rock stress measuring system, including stressometer body (1), installation guide rod (2) and display instrument electricity box (3);Which is special Levy and be,
Integrally in cylinder, its front end is arranged to set inside pyramidal structure, stressometer body (1) described stressometer body (1) There is pressure pocket, on stressometer body (1), be additionally provided with pressure block (4) and stressometer fixing device (5);Pressure block (4) is by stress The guide frame sealing radially arranged on meter body (1) is embedded on stressometer body (1), and pressure block (4) is embedding Enter the end pressure pocket internal with stressometer body (1) to connect;After stressometer fixing device (5) is arranged on stressometer body (1) End, the shaft core position of stressometer fixing device (5) are in axial direction provided with guide rod installing hole (51), stressometer fixing device (5) It is internal at least provided with two positional cylinders (52) that radially direction is arranged, the piston end of positional cylinder (52) outwards arranges, and living Plug end is provided with pilot pin, and the cylinder bottom end position that the positional cylinder (52) of inner side is just being pointed in guide rod installing hole (51) is provided with along footpath Guide channel (53) arranging to direction, extending to the cylinder bottom end of positional cylinder (52);
Described installation guide rod (2) includes guiding guide rod (21) and connection guide (22);Be oriented to guide rod (21) front end be provided with The positioning shaft end of guide rod installing hole (51) dimensional fits, the position for positioning shaft end correspondence guide channel (53) are provided with radially side To it is arranging, by the shop bolt (23) of the scalable control of pushing handle telescopic control mechanism, the outside dimension of shop bolt (23) with lead Coordinate to the internal diameter size of passage (53), be oriented on guide rod (21) and be additionally provided with gravity sensor (24), after being oriented to guide rod (21) End is provided with fast connector;Connection guide (22) sets at least to one, and the front end of connection guide (22) is provided with and is oriented to guide rod (21) fast joint structure that fast connector coordinates, the rear end of connection guide (22) also is provided with fast connector;
Described display instrument electricity box (3) are controlled back including controller, display screen, hydraulic power unit, hydraulic control valve group, pressure block Road, positional cylinder control loop, stress numerical collection counter circuit, controller respectively with display screen, hydraulic power unit, hydraulic control valve Group electrical connection, hydraulic power unit are tightly connected with the pressure pocket of stressometer body (1) by hydraulic control valve group and fluid pressure line, are controlled Device processed is connected with stressometer fixing device (5) respectively.
2. surrouding rock stress measuring system according to claim 1, it is characterised in that described positional cylinder (52) is using pneumatic Or hydraulic control, the cylinder bottom end insertion of described guide channel (53) Yu positional cylinder (52) and the cylinder bottom end of positional cylinder (52) Guide channel (53) aperture position is provided with normally closed unidirectional elastic leather plug (54);The length dimension of described shop bolt (23) is more than The length dimension of guide channel (53).
3. surrouding rock stress measuring system according to claim 2, it is characterised in that the cylinder bottom end of described positional cylinder (52) It is connected with the hydraulic control valve group of display instrument electricity box (3) by extending out to the fluid pressure line of outside, and fluid pressure line and positional cylinder (52) position of cylinder bottom end connection is located in the coverage of normally closed unidirectional elastic leather plug (54).
4. surrouding rock stress measuring system according to claim 2, it is characterised in that the cylinder bottom end of described positional cylinder (52) It is connected with pressure gas source by extending out to the pneumatic line and pneumatic control valve group of outside, and pneumatic line and positional cylinder (52) The position of cylinder bottom end connection is located in the coverage of normally closed unidirectional elastic leather plug (54), the control of described display instrument electricity box (3) Device processed is electrically connected with pneumatic control valve group.
5. the surrouding rock stress measuring system according to Claims 1-4 any claim, it is characterised in that described determines The pushing handle telescopic control mechanism of position pin (23) is pure mechanic structure, including ejector spring and haulage cable;Ejector spring correspondence is fixed The position of position pin (23) is arranged on and is oriented in the positioning shaft end of guide rod (21);One end of haulage cable with it is described radially The bottom connection of the shop bolt (23) that direction is arranged, the other end extend out to guiding guide rod (21) outside.
6. the surrouding rock stress measuring system according to Claims 1-4 any claim, it is characterised in that described determines The pushing handle telescopic control mechanism of position pin (23) is bi-directional expansion cylinder, the piston of described shop bolt (23) installed in bi-directional expansion cylinder On end, bi-directional expansion cylinder is connected with the hydraulic control valve group of display instrument electricity box (3) by fluid pressure line.
7. the surrouding rock stress measuring system according to Claims 1-4 any claim, it is characterised in that described leads Circumferential angle feed-back sensor, circumferential angle feed-back sensor and described display instrument electricity box (3) are additionally provided with guide rod (21) Controller electrical connection.
8. surrouding rock stress measuring system according to claim 7, it is characterised in that described gravity sensor (24) and week It is embedded in angle feed-back sensor and is oriented to guide rod (21) inside, and gravity sensor (24) and circumferential angle feed-back sensor is equal Positioned at the front portion for being oriented to guide rod (21).
9. the surrouding rock stress measuring system according to Claims 1-4 any claim, it is characterised in that described leads Groove that correspondence connect is provided with guide rod (21) and the outer wall of connection guide (22) in axial direction.
CN201611050998.1A 2016-11-24 2016-11-24 A kind of surrouding rock stress measuring system CN106546359B (en)

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