CN102979520A - Horizontal hole ground stress measurement device based on BWSRM (Borehole Wall Stress Relief Method) principle - Google Patents
Horizontal hole ground stress measurement device based on BWSRM (Borehole Wall Stress Relief Method) principle Download PDFInfo
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Abstract
The invention relates to a horizontal hole ground stress measurement device based on a BWSRM (Borehole Wall Stress Relief Method) principle, which is used for the technical field of measurement of stress of rocks in an underground cavity or a mine opening. The horizontal hole ground stress measurement device comprises a sealed cable joint, a stress measurement main working part, a multiway stress measuring instrument, a measurement control unit and a detection part, wherein the sealed cable joint is connected with the front end of the stress measurement main working part to be used as an output port for a power cable and a communication cable of the integral device; the stress measurement main working part is sequentially connected with the multiway stress measuring instrument, the measurement control unit and the detection part; the multiway stress measuring instrument is used for recording variation of stress on a working surface in the process that a thin-walled diamond core drill implements ring-shaped cutting on surrounding rocks of the hole wall of a borehole; and the detection part is used for observing and recording the quality condition of the hole wall of the borehole in the process of propelling integral equipment into the horizontal borehole to a working hole depth and providing reference basis for a local hole section which is selected to be subjected to stress relief. According to the invention, the integral measuring process is controlled sufficiently by an electromechanical integration technology through adopting a main control module; and test reliability and measurement accuracy can be greatly improved. The horizontal hole ground stress measurement device is convenient to carry and apply in the field and easy to operate in the field and can carry out three-dimensional ground stress actual measurement easily.
Description
Technical field
What the present invention relates to is a kind of device of geotechnics field of measuring technique, specifically a kind of lateral aperture geostress survey device based on the BWSRM principle.
Background technology
The stress state of the earth's crust is one of most important character of the earth's crust, and fully realizing and understanding Crustal stress state is one of problem very important in the rock mechanics and engineering science.In situ stress measurement is to obtain direct, the most reliable means of Crustal stress state data, compares with other nature parameters of rock material, and rock stress is the amount of a very difficult Measurement accuracy.For many years, geologist, Geophysicist and engineers and technicians have done a large amount of research work around this problem of geostress survey, still fail so far to obtain a satisfied result.With regard at present with regard to cover core stress relief method the most frequently used in the rock mechanics and engineering and these two kinds of earth stress measuring methods of hydrofracturing method, the former often causes measuring invalid owing to overlapping the core problem that easily occurs to break when the long core of brill uses it in deep hole, and the supposition that a certain principal direction of stress that the latter does is consistent with the drilling axis direction and actual conditions may have very large error and so that there is query in the reliability of test result.
Find through the literature search to prior art, Chinese invention patent " geological borehole wall rock strain measurement device " (Hou Mingxun, burnish gilding is held high up, Ge Xiurun. patent of invention number: ZL200810034564.1. State Intellectual Property Office, 2011 04 month) in the technology that proposed to adopt the BWSRM method how in vertical gun drilling, to carry out the hole wall rock strain measurement implement approach, the rock strain measurement device that proposes is mainly by hoisting mechanism, sealing cable junctions, the electronic equipment storehouse, the multichannel strain gauge, computer control unit, the coolant pump storehouse, upper packer, strain measurement master operate portions, delivery device, inner cylinder liner, lower packet, lower equipment compartment, the formations such as outer cylinder sheath, wherein: hoisting mechanism is connected with the upper end of outer cylinder sheath, sealing cable junctions links to each other with the electronic equipment storehouse, output port as the electronic equipment storehouse, the electronic equipment position in storehouse is in the hoisting mechanism below, be provided with multichannel strain gauge and computer control unit in the electronic equipment storehouse, below, electronic equipment storehouse is provided with the coolant pump storehouse, below, coolant pump storehouse is provided with upper packer, upper packer is fixedly connected with outer cylinder sheath, lower packet is fixedly connected with the outer cylinder sheath bottom, strain measurement master operate portions and inner cylinder liner, delivery device is assembled into one, and place between upper packer and the lower packet, lower equipment position in storehouse is in the afterbody of outer cylinder sheath.This device mainly is be used to the normal strain of measuring nearly vertical drilling hole wall country rock, can't be applicable to the Three-dimensional Rock geostress survey in underground chamber or mine working near-horizontal hole, and its practicality is subject to certain restrictions.
Summary of the invention
The present invention is directed to the prior art above shortcomings, propose a kind of lateral aperture geostress survey device based on the BWSRM principle, be applicable in underground chamber or mine working, be used for measuring the Three-dimensional Rock geostatic stress in the near-horizontal hole.By this device is pushed in the lateral aperture in the process away from a certain drilling depth outside underground chamber or the mine working excavation disturbance district with drilling rod, the camera that utilization is installed in its leading section can be observed the quality condition of hole wall, select to meet a bit of partial bores section that geostress survey requires in conjunction with the drilling data that obtains in the lateral aperture pore forming process again, to be selected reserve be fit to carry out the hole wall wall (work plane) of stress relieving operation after, device support is fixed in the lateral aperture; Then work plane is carried out necessary polishing and dry the processing, strain inductor plaster mechanism with in advance design pastes anti-water stress inductor on the work plane, behind strain inductor and the abundant cementation solidifying of work plane, the startup cutting implement carries out the annular cutting at the work plane that posts foil gauge and creeps into operation so that the hole wall country rock is implemented stress relieving, be stored in like this rock stress that is disengaged rock sample and namely be released, the strain inductor that the strain variation of the work plane that causes thus just is stuck has thereon recorded.Need only the normal strain value that records several different parts on this selected in horizontal drilling a bit of partial bores wall with the method, then these strain measurement values are combined, and can determine the geostatic stress component of this partial bores section country rock (survey mark) according to the constitutive relation of rock material, thereby also just determined the initially stress state of survey mark.
The present invention is achieved by the following technical solutions, the present invention includes: sealing cable junctions, strain measurement master operate portions, the multichannel strain gauge, measure-controlling unit and detection section, wherein: sealing cable junctions links to each other as the power cable of whole device and the output port of communication cable with the front end of strain measurement master operate portions, strain measurement master operate portions successively with the multichannel strain gauge that is used for record thin-walled diamond core bit the borehole wall country rock is implemented the variation of strain on the annular cutting process work plane, measure-controlling unit and be used for advances whole equipment hand-hole to provide the detection section of reference frame to link to each other and transmit detection information to the quality condition of the work observation of hole depth process and record borehole wall and for the partial bores section of selecting to implement stress relieving in horizontal drilling.
Described multichannel strain gauge, measure-controlling unit and detection section all are arranged in the electronic equipment storehouse and are connected with main control module in the Main Control Tank in the aperture that is arranged at lateral aperture.
Described strain measurement master operate portions comprises: the cannelure cutter sweep that contains the thin-walled diamond core bit and overlap with key tooth drilling tool, the rock surface sanding component, spraying glue and foil gauge are peeled off assembly, the foil gauge paster component, course of work state-detection element, front pedestal and rear pedestal, wherein: band key tooth drilling tool cover is fixedly connected with by screw thread with the thin-walled diamond core bit, the rock surface sanding component is fixed on the front pedestal, spraying glue and foil gauge are peeled off the front upper side that assembly is fixed on the rear pedestal and is positioned at the thin-walled diamond core bit, the foil gauge paster component is arranged on by thin-walled diamond core bit and band key tooth drilling tool and overlaps in the formed cylindrical shell, and course of work state-detection element is arranged on the outside of thin-walled diamond core bit.
Also be provided with on the described strain measurement master operate portions and spy on element, this is spied on element and is one group and is used for observational record thin-walled diamond core bit and creeps into and spray the camera that glue and foil gauge are peeled off the assembly duty.
Also comprise in the described cannelure cutter sweep: rotary drive motor, main spindle box, the feeding stepper motor, the feed mechanism axle box, the drilling tool seat, the feed mechanism bearing, feeding pushes screw mandrel and counter-force supporting mechanism, wherein: the output of rotary drive motor is horizontally fixed on the rear pedestal, the electric rotating machine output links to each other with the main spindle box driving shaft, and the output shaft of main spindle box links to each other with the band key tooth drilling tool cover that axis is in vertical direction, and be supported on the drilling tool seat, the wedge shape bottom of drilling tool seat is assemblied in the wedge-shaped slot of feed mechanism bearing, the feed mechanism bearing is fixedly connected with the feed mechanism axle box, the feeding stepper motor lies in a horizontal plane in strain measurement master operate portions front side and its axis and band key tooth drilling tool sleeve line parallel, feeding stepper motor main shaft links to each other with feed mechanism axle box input, feed mechanism axle box output pushes screw mandrel with feeding and links to each other, and the counter-force supporting mechanism is positioned at band key tooth drilling tool cover rearward end and hinged with feeding propelling movement screw mandrel.
Described rock surface sanding component comprises: polishing motor, workpiece polishing mechanism and polishing arm, wherein: the polishing electric machine main shaft links to each other with workpiece polishing mechanism, workpiece polishing mechanism is that a hinge linkage and front end link to each other with the polishing arm, and polishing motor, workpiece polishing mechanism all are fixedly installed on the rear pedestal.
Described spraying glue and foil gauge are peeled off assembly and comprised: motor is peeled off in spraying, the spraying mechanism for stripping, spray arm and peel off arm, wherein: spraying is peeled off the motor level and is fastened on the rear support, it is parallel with the rotary drive motor axis to spray the axis of peeling off motor, the spindle end that motor is peeled off in spraying is connected with the spraying mechanism for stripping, the spraying arm and peel off arm respectively with spray mechanism for stripping and be connected, the spraying arm be positioned at the front upper place of thin-walled diamond core bit cylindrical shell and in working order the time by working window to the work plane spraying adhesive, peel off that arm is positioned at the outside of thin-walled diamond core bit cylindrical shell and when the dead ahead of peeling off arm and then be positioned at when in running order the thin-walled diamond core bit, be used for cutting off when strain measurement finishes the connection wire of foil gauge, be convenient to reclaim drilling tool to boring.
Described foil gauge paster component comprises: foil gauge plaster mechanism and paster arm, wherein: the rearward end of foil gauge plaster mechanism is connected with rearward end with key tooth drilling tool, and be fixed on the sidewall of inner cylinder liner, the front end of foil gauge plaster mechanism is equipped with the paster arm, arm header bits at the paster arm is provided with circular trough, be provided with wire hole in the circular trough, the strain inductor is installed in the circular trough, and the multichannel strain gauge in the electronic equipment storehouse exported and be connected to by strain inductor connection wire by wire hole.
Described course of work state-detection element is used for detecting in real time the cannelure cutter sweep in the duty of creeping into operation process feeding stepper motor and thin-walled diamond core bit, and the parameters such as drilling depth, the pressure of the drill, drilling speed are transferred to measure-controlling unit in the electronic equipment storehouse, in order to drilling process is controlled in real time.
Described sealing cable junctions communicates by the main control module outside the aperture of multicore cable and horizontal geotechnical boring.
The front and back end of described strain measurement master operate portions is equipped with support, wherein: realize the front end of strain measurement master operate portions and being fixedly connected with of sealing cable junctions by front support, realize the rear end of strain measurement master operate portions and being fixedly connected with of multichannel strain gauge by rear support.
Described front support and rear support are three-component flexible mechanical mechanism, and its three alternate 120 ° cylindrical poles are can be simultaneously overhanging and whole equipment is supported to securely on the hole wall of horizontal drilling under the driving of micromachine; When end-of-job, three cylindrical poles can be shunk under the reverse drive of micromachine and the equipment of being convenient to is regained.
Described front pedestal is arranged at the rearward end of front support and is fixedly connected with in front support, and described rear pedestal is arranged at the postmedian of strain measurement master operate portions and the horizontal cylindrical pole of arranging by three equal circumference angles is fixedly connected with front pedestal.
Described measurement mechanism can be arranged at lateral aperture in borehole wire-line coring drilling rod and aperture bracing frame link to each other, borehole wire-line coring drilling rod and aperture bracing frame are as the slave part that pushes and pull out equipment in lateral aperture.
Described aperture bracing frame is a bit of firm cylindrical tube, and its inside is the rolling bearing of three alternate 120 ° of arrangements, is convenient to the pushing equipment hand-hole when drilling rod moves forward and backward therein.
Among the present invention, at first will be assembled into whole lateral aperture geostress survey equipment body is placed in the horizontal drilling aperture, the geostress survey equipment body is connected with borehole wire-line coring drilling rod by sealing cable junctions, and borehole wire-line coring drilling rod passes from the mesopore of aperture bracing frame, and the aperture bracing frame is fixed in the aperture; By in the process of borehole wire-line coring drilling rod pushing equipment hand-hole, open the camera observation that is positioned at detection section and the quality condition of record borehole wall, pushing near the predetermined hole depth position, select work plane; According to the relative position relation between working window on the equipment outer cylinder body and the detection section, the pushing equipment reach makes working window be in the work plane position of selection; Opening the front support and the rear support that are assembled together with outer cylinder body is fixed on whole equipment in the horizontal drilling;
Start the polishing motor, workpiece polishing mechanism begins to drive the polishing arm and reaches near the work plane by working window, and the correct grinding tool of polishing arm arm head is by pressure and the speed set, work plane is polished, behind the polishing end cycle, the polishing arm is regained and is resetted, and closes the polishing motor; Start spraying and peel off motor, the spraying mechanism for stripping is worked by spraying glue mode, be injected into pressure in the adhesive container, the spraying arm sprays adhesive to work plane, after the work of spraying glue is finished, close spraying and peel off motor, start the foil gauge plaster mechanism, the foil gauge that the paster arm will be pre-installed on arm head is pushed on the work plane, and imposes uniform pressure by setting value, after adhesive solidifies, discharge the pressure that imposes on the foil gauge; Start cooling water recirculation system; Start rotary drive motor and feeding stepper motor, the cannelure cutter sweep is started working; the thin-walled diamond core bit carries out annular cutting and creeps into operation beginning to stretch to work plane by working window uniting of rotary drive motor and feeding stepper motor under the driving; simultaneously; the counter-force supporting mechanism also pushes the effect lower support of screw mandrel on the outer cylinder body inwall in feeding; for drilling tool provides enough reaction of bearings; foil gauge begins the strain variation data on the writing task face and is transferred to the multichannel strain gauge; course of work state-detection element then records the drilling parameter data and is transferred to measure-controlling unit in the electronic equipment storehouse; treat that the cannelure cutting reaches set depth; creep into and finish to stop boring; the strain data collecting work finishes; reverse rotation drive motors and feeding stepper motor, reclaims thin-walled diamond core bit and counter-force supporting mechanism to initial bit; Start spraying and peel off motor, spraying glue and foil gauge are peeled off assembly and are started, and the spraying mechanism for stripping is worked by peeling off the foil gauge mode, peel off arm and seesaw along work plane, and from work plane, plaster mechanism reclaims the paster arm to original position to the first cutter of arm with the strain slice bar; Each work package returns initial bit, hole wall rock strain measurement end-of-job; Shrink front support and rear support, from horizontal drilling, regain whole lateral aperture geostress survey device to the aperture by borehole wire-line coring drilling rod again.Whole operation process is finished by main control module control in order automatically according to fixing program, and working condition that can adaptation level hole relative complex.As long as carry out at least three above-mentioned stress relieving operations in a bit of partial bores section, can obtain near the geostatic stress tensor of the country rock of survey mark, thereby also just determine the geostatic stress state of country rock.
If when in the larger horizontal drilling of humidity, carrying out geostress survey, can a hot air apparatus be installed near the position of sanding component, to the work plane grinding process time, be aided with hot blast and be beneficial to the drying of work plane, be convenient to paste foil gauge.
Technique effect
Compared with prior art, the present invention has following beneficial effect: the rock sample size that is disengaged is less, such as, the rock sample diameter of releasing is 30mm, the degree of depth 36mm of annular cutting just can satisfy the needs of certainty of measurement, this extracts at least the rock sample of 300mm during with cover core stress relieving and compares much smallerly, so just can reduce the possibility of the core that breaks, the present invention's modern design, topology layout is reasonable, the strain gauge adhesion process is finished automatically by the mechanism that designs, and is simple to operate, is convenient to field work.Lateral aperture geostress survey device profile of the present invention is cylindrical, is applicable to the horizontal drilling that diameter is 150-160mm, aspect the entry geostatic stress actual measurement of deep underground chamber comparatively wide popularizing application prospect is being arranged.
Description of drawings
Fig. 1 is that embodiment uses schematic diagram.
Fig. 2 is structural representation of the present invention.
The specific embodiment
The below elaborates to embodiments of the invention, and present embodiment is implemented under take technical solution of the present invention as prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
As depicted in figs. 1 and 2, present embodiment comprises: sealing cable junctions 3, strain measurement master operate portions 5, measure-controlling unit 8, multichannel strain gauge 9 and detection section 10, wherein: front support 4 realizes the front end of strain measurement master operate portions 5 and being fixedly connected with of sealing cable junctions 3, as the entirely power cable of stress measurement device and the output port of communication cable, strain measurement master operate portions 5 as an integral installation in outer sleeve 21, its front end links to each other with front support 4, rear support 6 links to each other with electronic equipment storehouse 7 and realizes the rear end of strain measurement master operate portions 5 and being fixedly connected with of multichannel strain gauge 9, be provided with measure-controlling unit 8 and multichannel strain gauge 9 in the electronic equipment storehouse 7, detection section 10 links to each other with electronic equipment storehouse 7 and is positioned at the afterbody of whole device, has working window 20 on the outer sleeve 21.Borehole wire-line coring drilling rod 1 and sealing cable junctions 3 be by screwed connection, and the aperture bracing frame 2 of borehole wire-line coring drilling rod 1 by being fixed in the aperture is in horizontal drilling 18 interior propellings or pull out entirely stress measurement device; 17 of the water pipe 11 that links to each other with sealing cable junctions 3, communication cable 16 and power cables lead to outside the aperture of lateral aperture 18 from borehole wire-line coring drilling rod 1 inside, respectively be placed on underground chamber (or tunnel) 19 in cooling water pump 13, main control module 15, Main Control Tank 14 be connected, cooling water pump 13 is placed in the tank 12.
As shown in Figure 2, described strain measurement master operate portions 5 comprises: the cannelure cutter sweep, the rock surface sanding component, spraying glue and foil gauge are peeled off assembly, the foil gauge paster component, spy on element 520, hot air apparatus 522, course of work state-detection element 518, front pedestal 519, rear pedestal 502, the cannelure cutter sweep comprises thin-walled diamond core bit 504 and band key tooth drilling tool cover, band key tooth drilling tool cover and thin-walled diamond core bit 504 are connected by screw thread, the rock surface sanding component is fixed on the front pedestal 519, spraying glue and foil gauge are peeled off assembly and are fixed on the rear pedestal 502, and place the rear side of thin-walled diamond core bit 504, the nozzle 521 that is connected with water pipe 11 is installed in the leading section of thin-walled diamond core bit 504, spying on element 520 is installed between cannelure cutter sweep and the rock surface sanding component, hot air apparatus 533 is fastened on workpiece polishing mechanism one side of rock surface sanding component, the foil gauge paster component is arranged on by thin-walled diamond core bit 504 and band key tooth drilling tool and overlaps in the formed cylindrical shell, and course of work state-detection element 518 is arranged on the outside of thin-walled diamond core bit 504.
described cannelure cutter sweep comprises: rotary drive motor 501, main spindle box 503, thin-walled diamond core bit 504, feeding stepper motor 505, feed mechanism axle box 506, band key tooth drilling tool cover 525, drilling tool seat 526, feed mechanism bearing 527, feeding pushes screw mandrel 528, counter-force supporting mechanism 514, wherein: rotary drive motor 501 leading sections are horizontally fixed on rear pedestal 502, the horizontal cylindrical pole 530 that rear pedestal 502 is arranged by three equal circumference angles is fixedly connected with front pedestal 519, rotary drive motor 501 outputs are connected with main spindle box 503 driving shafts, and the output of main spindle box 503 is connected with the band key tooth drilling tool cover 525 that axis is in vertical position, and be supported on drilling tool seat 526, the wedge shape bottom of drilling tool seat 526 is assemblied in the wedge-shaped slot of feed mechanism bearing 527, feed mechanism bearing 527 is fixedly connected with feed mechanism axle box 506, feeding stepper motor 505 lies in a horizontal plane in the front portion of strain measurement master operate portions 5, its axis is parallel with band key tooth drilling tool cover 525 axis, feeding stepper motor 505 main shafts are connected with feed mechanism axle box 506 inputs, feed mechanism axle box 506 outputs push screw mandrel 528 with feeding and are connected, counter-force supporting mechanism 514 is positioned at the front side with key tooth drilling tool cover 525 rearward end, hinged with feeding propelling movement screw mandrel 528.
Described rock surface sanding component comprises: polishing motor 511, workpiece polishing mechanism 512 and polishing arm 513, wherein: polishing motor 511 main shafts link to each other with workpiece polishing mechanism 512, workpiece polishing mechanism 512 is a hinge linkage, its front end is provided with polishing arm 513, and polishing motor 511, workpiece polishing mechanism 512 all are fixedly installed on the front pedestal 519 at outer cylinder body 21 middle parts.
Described spraying glue and foil gauge are peeled off assembly and comprised: motor 507 is peeled off in spraying, spraying mechanism for stripping 508, spray arm 509 and peel off arm 510, wherein: spraying is peeled off motor 507 and vertically is fastened on the rear pedestal 502, its axis is parallel with rotary drive motor 501 axis, its spindle end is connected with spraying mechanism for stripping 508, spraying arm 509 is installed on the spraying mechanism for stripping 508 and peels off arm 510, spraying arm 509 is positioned at the place ahead of thin-walled diamond core bit 504 cylindrical shells, can be by working window 22 to the work plane spraying adhesive when in running order, peel off arm 510 and be positioned at the outside of thin-walled diamond core bit 504 cylindrical shells, when the dead ahead of peeling off arm 510 and then be positioned at when in running order thin-walled diamond core bit 504, be used for cutting off when strain measurement finishes the connection wire of foil gauge, be convenient to reclaim drilling tool to boring.
Described foil gauge paster component comprises: foil gauge plaster mechanism 515, paster arm 516 and circular trough 517, wherein: the rearward end of foil gauge plaster mechanism 515 is connected with the rearward end of overlapping with key tooth drilling tool, the front end of foil gauge plaster mechanism 515 is equipped with paster arm 516, arm header bits at paster arm 516 is provided with circular trough 517, be provided with wire hole in the circular trough 517, foil gauge is installed in the circular trough 517, and the multichannel strain gauge 9 in the electronic equipment storehouse 7 exported and be connected to by the connection wire of foil gauge by wire hole.
Described course of work state-detection element 518 is used for detecting in real time the cannelure cutter sweep in the duty of creeping into operation process feeding stepper motor 505 and thin-walled diamond core bit 504, and the parameters such as drilling depth, the pressure of the drill, drilling speed are transferred to measure-controlling unit 8 in the electronic equipment storehouse 7, in order to drilling process is controlled in real time.
The described element 520 of spying on is a high definition variable-focus video camera, can Real Time Monitoring thin-walled diamond core bit 504 when in running order, rock surface sanding component, spraying glue and foil gauge peel off the course of work of assembly, foil gauge paster component.
Described hot air apparatus 533 is resistance wires, can export the hot blast of uniform temperature with air-dry work plane to the work plane position under main control module 15 controls when in running order.
As shown in Figure 2, described front support 4 and rear support 6 are three-component flexible mechanical mechanism, comprising: micro-driving motor 401, power transmission shaft 402, gear pair 403, linkage 404, cylindrical pole 405.When selected work plane, need to be when the fixing entirely stress measurement device of lateral aperture inner support, start micro-driving motor 401, by 404 actions of power transmission shaft 402 and gear pair 403 drivening rod mechanisms, thereby three cylindrical poles 405 that drive alternate hexagonal angle are outwards moved and are supported on the hole wall.When end-of-job need to be removed fixing entirely stress measurement device, start micro-driving motor 401 counter-rotatings, drive three cylindrical pole 405 inside contractile motions of alternate hexagonal angle, thereby be convenient to reclaim entirely stress measurement device.
As shown in Figure 2, described detection section 10 comprises: be fixedly installed on camera 101, anglec of rotation instrument 102 and inclinator 103 in the inner housing of detection section 10, wherein: camera 101 is used for the hole wall quality situation of detection level boring; Anglec of rotation instrument 102 is position sensors, the angle of circumference that with respect to the horizontal plane turns over when rotating in lateral aperture for thin-walled diamond core bit 504 axis that record strain measurement master operate portions 5, the position of stress relieving during with definite equipment work; Inclinator 103 is position sensors, is used for recording the entirely axis angle of inclination with respect to the horizontal plane of stress measurement device.
In the present embodiment, pass aperture bracing frame 2 by borehole wire-line coring drilling rod 1 the geostress survey device is pushed to horizontal drilling 18, starting the Main Control Tank 14 that is positioned at underground chamber (or tunnel) 19 provides power source for the geostress survey device; Starting main control module 15 communicates with the geostress survey device; In pushing geostress survey device hand-hole process, by being installed in camera 101 observation hole wall quality conditions and the selected work plane in the geostress survey device afterbody detection section 10; Continue to push the geostress survey device until the working window 20 on the outer cylinder body 21 over against selected good work plane position; Start front support 4 and rear support 6, be fixed on the lateral aperture hole wall until the geostress survey device stably supports; Obtain the angle in work plane relative opening week and the angle of inclination parameter of measured hole section by anglec of rotation instrument 102 and the inclinator 103 that is installed in the detection section 10; Start near the state in element 520 Real Time Monitoring working window positions of spying on; Start polishing motor 511, workpiece polishing mechanism 512 driving polishing arms 513 are polished to work plane by pressure and the speed set near reaching work plane by working window 20, behind the polishing end cycle, close polishing motor 511, workpiece polishing mechanism 512 and polishing arm 513 automatically reset to original state; The work plane that 522 pairs of quilts of startup hot air apparatus are polished carries out necessary air-dry processing; Start spraying and peel off motor 507, spraying mechanism for stripping 508 is worked by spraying glue mode, is injected into pressure in the adhesive container, and spraying arm 509, is closed spraying and peeled off motor 507 after the work of spraying glue is finished to work plane spraying adhesive; Start foil gauge plaster mechanism 515, the strain inductor that paster arm 516 will be pre-installed in the first circular trough 517 of arm is pushed on the work plane, and imposes uniform pressure by setting value, after adhesive solidifies, discharges the pressure that imposes on the circular trough 717; Start the cooling water pump 13 that is positioned at underground chamber (or tunnel) 19 tanks 12, the cooling water in the tank 12 is delivered to cooling water at the nozzle 521 that is installed in thin-walled diamond core bit 504 front ends by the water pipe 11 that is connected with cooling water pump 13; Start rotary drive motor 501 and feeding stepper motor 505, the cannelure cutter sweep is started working, after starting, rotary drive motor 501 passes through main spindle box 503, band key tooth drilling tool cover 525 drives thin-walled diamond core bit 504 and rotatablely moves, feeding stepper motor 505 then drives feeding by feed mechanism axle box 506 and pushes screw mandrel 528 rotations, feeding pushes screw mandrel 528 and pushes counter-force supporting mechanism 514 and 526 motions of drilling tool seat according to stress by relative direction, when counter-force supporting mechanism 514 when drive lower support that feeding pushes screw mandrel 528 is to outer cylinder body 21 inwalls, for drilling tool provides enough reaction of bearings, at this moment, feeding pushes 526 motions of 528 propelling movement drilling tools of screw mandrel seat, thereby drive thin-walled diamond core bit 504 to the drilling direction motion, and stretch to work plane by working window 20 and carry out the cannelure cutting and creep into operation; Meanwhile, sticking on strain inductor on the work plane begins the strain variation data on the writing task face and is transferred to multichannel strain gauge 9 in the electronic equipment storehouse 7, multichannel strain gauge 9 is used for recording the variation of strain on the annular cutting operation process work plane, for the follow-up data processing, 518 of course of work state-detection elements record drilling parameter data also are transferred to measure-controlling unit 8 in the electronic equipment storehouse 7,8 pairs of received drilling parameter data analysis of measure-controlling unit are also done necessary adjustment according to working condition to drilling parameter, thereby realize the real-time control to drilling process, treat that the cannelure cutting reaches set depth, close rotary drive motor 501 and feeding stepper motor 505, stop boring, close cooling water pump 13, the strain data collecting work finishes, reverse drive feeding stepper motor 505 reclaims thin-walled diamond core bit 504 and counter-force supporting mechanism 514 to initial bit; Again start spraying and peel off motor 507, spraying glue and foil gauge are peeled off assembly and are started, spraying mechanism for stripping 508 is worked by peeling off the foil gauge mode, peeling off arm 510 moves forward and backward along work plane, the first cutter of arm will stick on strain slice bar on the work plane from work plane, and plaster mechanism 515 reclaims paster arms 516 to initial position; Under main control module 15 controls, each work package returns initial bit, and the hole wall surrouding rock stress is removed end-of-job; Remove front support 4 and rear support 6, geostress survey device and lateral aperture hole wall break away from; From horizontal drilling 18, trip out the geostress survey device to the hole by borehole wire-line coring drilling rod 1.Although entirely stress measurement process is complicated, all according to fixing program, automatically finished in order by main control module control.
Can find out from whole work, the present embodiment utilization is implemented the stress relieving operation at the horizontal drilling sidewall and is carried out country rock far field geostress survey based on the BWSRM principle, it realizes the traditional desired length much shorter of cover core technology of complete rock sample Length Ratio of ring cutting that complete stress relieving requires, and fully relying on electromechanical integration technology to adopt main control module to control whole measuring process, testing reliability and certainty of measurement have sizable raising for traditional manual control survey.Such as, traditional cover core stress relief method can't obtain to be disengaged the real-time change situation of strain on the core face in real time, reliability that so just can't strain value that accurate evaluation obtains, and the method that the employing present embodiment provides and technology not only can obtain the strain variation overall process on the work plane in real time, and reduced human intervention, improved the precision of test.On the other hand, the lateral aperture geostress survey device that present embodiment proposes, it is supporting to need not main equipment, is easy to carry and the field, is easy to execute-in-place, is convenient to field conduct when carrying out the geostatic stress actual measurement in underground chamber or mine working.
Claims (10)
1. lateral aperture geostress survey device based on the BWSRM principle, it is characterized in that comprising: sealing cable junctions, strain measurement master operate portions, the multichannel strain gauge, measure-controlling unit and detection section, wherein: sealing cable junctions links to each other as the power cable of whole device and the output port of communication cable with the front end of strain measurement master operate portions, strain measurement master operate portions successively with the multichannel strain gauge that is used for record thin-walled diamond core bit the borehole wall country rock is implemented the variation of strain on the annular cutting process work plane, measure-controlling unit and be used for advances whole equipment hand-hole to provide the detection section of reference frame to link to each other and transmit detection information, multichannel strain gauge to the quality condition of the work observation of hole depth process and record borehole wall and for the partial bores section of selecting to implement stress relieving in horizontal drilling, measure-controlling unit and detection section all are arranged in the electronic equipment storehouse and are connected with main control module in the Main Control Tank in the aperture that is arranged at lateral aperture;
Described strain measurement master operate portions comprises: the cannelure cutter sweep that contains the thin-walled diamond core bit and overlap with key tooth drilling tool, the rock surface sanding component, spraying glue and foil gauge are peeled off assembly, the foil gauge paster component, course of work state-detection element, front pedestal and rear pedestal, wherein: band key tooth drilling tool cover is fixedly connected with by screw thread with the thin-walled diamond core bit, the rock surface sanding component is fixed on the front pedestal, spraying glue and foil gauge are peeled off the front upper side that assembly is fixed on the rear pedestal and is positioned at the thin-walled diamond core bit, the foil gauge paster component is arranged on by thin-walled diamond core bit and band key tooth drilling tool and overlaps in the formed cylindrical shell, and course of work state-detection element is arranged on the outside of thin-walled diamond core bit.
2. device according to claim 1, it is characterized in that, also be provided with on the described strain measurement master operate portions and spy on element, this is spied on element and is one group and is used for observational record thin-walled diamond core bit and creeps into and spray the camera that glue and foil gauge are peeled off the assembly duty.
3. device according to claim 1, it is characterized in that, also comprise in the described cannelure cutter sweep: rotary drive motor, main spindle box, the feeding stepper motor, the feed mechanism axle box, the drilling tool seat, the feed mechanism bearing, feeding pushes screw mandrel and counter-force supporting mechanism, wherein: the output of rotary drive motor is horizontally fixed on the rear pedestal, the electric rotating machine output links to each other with the main spindle box driving shaft, and the output shaft of main spindle box links to each other with the band key tooth drilling tool cover that axis is in vertical direction, and be supported on the drilling tool seat, the wedge shape bottom of drilling tool seat is assemblied in the wedge-shaped slot of feed mechanism bearing, the feed mechanism bearing is fixedly connected with the feed mechanism axle box, the feeding stepper motor lies in a horizontal plane in strain measurement master operate portions front side and its axis and band key tooth drilling tool sleeve line parallel, feeding stepper motor main shaft links to each other with feed mechanism axle box input, feed mechanism axle box output pushes screw mandrel with feeding and links to each other, and the counter-force supporting mechanism is positioned at band key tooth drilling tool cover rearward end and hinged with feeding propelling movement screw mandrel.
4. device according to claim 1, it is characterized in that, described rock surface sanding component comprises: polishing motor, workpiece polishing mechanism and polishing arm, wherein: the polishing electric machine main shaft links to each other with workpiece polishing mechanism, workpiece polishing mechanism is that a hinge linkage and front end link to each other with the polishing arm, and polishing motor, workpiece polishing mechanism all are fixedly installed on the front pedestal.
5. device according to claim 1, it is characterized in that, described spraying glue and foil gauge are peeled off assembly and comprised: motor is peeled off in spraying, the spraying mechanism for stripping, spray arm and peel off arm, wherein: spraying is peeled off the motor level and is fastened on the front support, it is parallel with the rotary drive motor axis to spray the axis of peeling off motor, the spindle end that motor is peeled off in spraying is connected with the spraying mechanism for stripping, the spraying arm and peel off arm respectively with spray mechanism for stripping and be connected, the spraying arm be positioned at the front upper place of thin-walled diamond core bit cylindrical shell and in working order the time by working window to the work plane spraying adhesive, peel off that arm is positioned at the outside of thin-walled diamond core bit cylindrical shell and when the dead ahead of peeling off arm and then be positioned at when in running order the thin-walled diamond core bit, be used for cutting off when strain measurement finishes the connection wire of foil gauge, be convenient to reclaim drilling tool to boring.
6. device according to claim 1, it is characterized in that, described foil gauge paster component comprises: foil gauge plaster mechanism and paster arm, wherein: the rearward end of foil gauge plaster mechanism is connected with rearward end with key tooth drilling tool, and be fixed on the sidewall of inner cylinder liner, the front end of foil gauge plaster mechanism is equipped with the paster arm, arm header bits at the paster arm is provided with circular trough, be provided with wire hole in the circular trough, the strain inductor is installed in the circular trough, and the multichannel strain gauge in the electronic equipment storehouse exported and be connected to by strain inductor connection wire by wire hole.
7. device according to claim 1, it is characterized in that, described course of work state-detection element is used for detecting in real time the cannelure cutter sweep in the duty of creeping into operation process feeding stepper motor and thin-walled diamond core bit, and the parameters such as drilling depth, the pressure of the drill, drilling speed are transferred to measure-controlling unit in the electronic equipment storehouse, in order to drilling process is controlled in real time.
8. device according to claim 1, it is characterized in that, the front and back ends of described strain measurement master operate portions is equipped with support, wherein: realize the front end of strain measurement master operate portions and being fixedly connected with of sealing cable junctions by front support, realize the rear end of strain measurement master operate portions and being fixedly connected with of multichannel strain gauge by rear support.
9. device according to claim 1, it is characterized in that, described front support and rear support are three-component flexible mechanical mechanism, and its three alternate 120 ° cylindrical poles are can be simultaneously overhanging and whole equipment is supported to securely on the hole wall of horizontal drilling under the driving of micromachine; When end-of-job, three cylindrical poles can be shunk under the reverse drive of micromachine and the equipment of being convenient to is regained; Described front pedestal is arranged at the rearward end of front support and is fixedly connected with in front support, and described rear pedestal is arranged at the postmedian of strain measurement master operate portions and the horizontal cylindrical pole of arranging by three equal circumference angles is fixedly connected with front pedestal.
10. device according to claim 1, it is characterized in that, described measurement mechanism links to each other with borehole wire-line coring drilling rod and aperture bracing frame in being arranged at lateral aperture, and borehole wire-line coring drilling rod and aperture bracing frame are as the slave part that pushes and pull out equipment in lateral aperture; Described aperture bracing frame is a bit of firm cylindrical tube, and its inside is the rolling bearing of three alternate 120 ° of arrangements, is convenient to the pushing equipment hand-hole when drilling rod moves forward and backward therein.
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| CN2012105596197A CN102979520A (en) | 2012-12-20 | 2012-12-20 | Horizontal hole ground stress measurement device based on BWSRM (Borehole Wall Stress Relief Method) principle |
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| CN2012105596197A CN102979520A (en) | 2012-12-20 | 2012-12-20 | Horizontal hole ground stress measurement device based on BWSRM (Borehole Wall Stress Relief Method) principle |
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| CN105374260A (en) * | 2015-12-24 | 2016-03-02 | 中国地质大学（武汉） | Comprehensive experiment method and experiment device for vibration stress analysis of HDD (horizontal directional drilling) rod |
| CN105898236A (en) * | 2016-05-30 | 2016-08-24 | 中国科学院武汉岩土力学研究所 | Intelligent digital drill panoramic shooting device |
| CN108547613A (en) * | 2018-06-13 | 2018-09-18 | 中国科学院武汉岩土力学研究所 | A kind of device for measuring deep rock mass three-dimensional ground stress |
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| CN110907086A (en) * | 2019-11-27 | 2020-03-24 | 中国科学院武汉岩土力学研究所 | Three-dimensional ground stress determination method based on borehole wall surface displacement measurement |
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| CN113605887A (en) * | 2021-09-30 | 2021-11-05 | 中国科学院武汉岩土力学研究所 | Deep drilling complex environment local wall stress relief test method and system |
| CN113605886A (en) * | 2021-09-30 | 2021-11-05 | 中国科学院武汉岩土力学研究所 | Deep drilling complex environment local wall stress relieving method test system |
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| CN116838319A (en) * | 2023-07-07 | 2023-10-03 | 中国矿业大学 | Full-environment drilling raw rock stress testing device and measuring method |
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| CN104453849A (en) * | 2014-10-20 | 2015-03-25 | 成都创源油气技术开发有限公司 | Shale gas reservoir three-dimensional geological stress predication evaluation method |
| CN104807563B (en) * | 2015-05-04 | 2017-04-05 | 中国矿业大学 | Stress test device in a non-contact manner and method based on drilling microscopic digital shooting |
| CN104807563A (en) * | 2015-05-04 | 2015-07-29 | 中国矿业大学 | Non-contact ground stress testing device and method based on drilling microscopy digital photography |
| CN105181199A (en) * | 2015-05-13 | 2015-12-23 | 中国科学院武汉岩土力学研究所 | Side hole stress releasing method of ground stress test |
| CN105181199B (en) * | 2015-05-13 | 2017-08-25 | 中国科学院武汉岩土力学研究所 | A kind of side hole stress relief method of detecting earth stress |
| CN105374260A (en) * | 2015-12-24 | 2016-03-02 | 中国地质大学（武汉） | Comprehensive experiment method and experiment device for vibration stress analysis of HDD (horizontal directional drilling) rod |
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| CN108547613B (en) * | 2018-06-13 | 2023-09-15 | 中国科学院武汉岩土力学研究所 | Device for measuring three-dimensional ground stress of deep rock mass |
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| CN110907086A (en) * | 2019-11-27 | 2020-03-24 | 中国科学院武汉岩土力学研究所 | Three-dimensional ground stress determination method based on borehole wall surface displacement measurement |
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| CN112857638B (en) * | 2020-12-25 | 2022-05-17 | 湖南应用技术学院 | Drilling internal stress measurement equipment and measurement method thereof |
| CN112901153A (en) * | 2021-02-09 | 2021-06-04 | 中国地质科学院地质力学研究所 | But reuse type deep well ground stress monitoring probe of repeatedly installing |
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| CN113605887A (en) * | 2021-09-30 | 2021-11-05 | 中国科学院武汉岩土力学研究所 | Deep drilling complex environment local wall stress relief test method and system |
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| CN116838319A (en) * | 2023-07-07 | 2023-10-03 | 中国矿业大学 | Full-environment drilling raw rock stress testing device and measuring method |
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