CN109577971A - Detecting earth stress device and test method - Google Patents

Detecting earth stress device and test method Download PDF

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Publication number
CN109577971A
CN109577971A CN201811540925.XA CN201811540925A CN109577971A CN 109577971 A CN109577971 A CN 109577971A CN 201811540925 A CN201811540925 A CN 201811540925A CN 109577971 A CN109577971 A CN 109577971A
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CN
China
Prior art keywords
drilling
tube
drilling tool
rod
advanced
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Granted
Application number
CN201811540925.XA
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Chinese (zh)
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CN109577971B (en
Inventor
王益腾
王川婴
韩增强
汪进超
胡胜
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Wuhan Institute of Rock and Soil Mechanics of CAS
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Wuhan Institute of Rock and Soil Mechanics of CAS
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Priority to CN201811540925.XA priority Critical patent/CN109577971B/en
Publication of CN109577971A publication Critical patent/CN109577971A/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B49/00Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/02Core bits
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1078Stabilisers or centralisers for casing, tubing or drill pipes
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/02Rod or cable suspensions
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/08Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
    • E21B19/084Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with flexible drawing means, e.g. cables
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B31/00Fishing for or freeing objects in boreholes or wells
    • E21B31/12Grappling tools, e.g. tongs or grabs
    • E21B31/20Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells
    • E21B47/01Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B49/00Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/02Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil

Abstract

The invention discloses detecting earth stress devices, including advanced drilling tool, advanced drilling tool includes advanced drilling tool outer tube and advanced drilling tool inner tube, detecting earth stress device further includes contact type aperture strain gauge means, contact type aperture strain gauge means include sequentially connected salvaging suspension parts, circuit storehouse component, measurement extension rod, contact component and protecting against shock component, the invention also discloses detecting earth stress method, the present invention has the function of recording storage data offline, breaks through the limitation to fathom;Advanced drilling tool and contact type aperture strain gauge means are separated, ensure the safety of contact type aperture strain gauge means;Installation, measurement, recycling, easy to operate, easy to accomplish, measurement efficiency is higher.

Description

Detecting earth stress device and test method
Technical field
The invention belongs to rock mechanics experiment technical fields, and in particular to detecting earth stress device further relates to crustal stress survey Method for testing.
Background technique
Crustal stress causes mining, water conservancy and hydropower and other various undergrounds or outdoor ground excavation project deformation and failure Basic active force is determining engineering rock mass mechanical attribute, carries out Stability Analysis of The Surrounding Rock, realizes geotechnical engineering excavation design and determines The scientific prerequisite of plan.As deep engineering construction is constantly to deep development, especially Large Underground Power Station, underground chamber And deep shale gas exploitation, in deep engineering stability analysis, crustal stress states are one of most important the most fundamental factors, Carry out the important content that detecting earth stress is excavation design, stability evaluation of rock mass and engineering project disaster prediction.
Stress relief method is that domestic and international development time longest, the technology most generallyd use is more mature at present answers a kind ofly Force measuring method, measurement crustal stress applicability and reliability in terms of, there is presently no which kind of method can and stress relieving Method is compared.Its test philosophy is the complete stress relieving that sets of holes core is realized in such a way that set bores, and keeps measuring point rock mass completely de- Liftoff stress, so that it is determined that crustal stress size and Orientation.
Currently, stress relief method has formed standard set process of measurement, specific steps are as follows: (1) from rock mass surface, generally Be from the surface in underground passage, tunnel to rock mass inside play a big drilling, until needing to measure the position of rock mass stress; (2) concentric aperture is beaten from big bottom hole, popped one's head in for installation, hole diameter is determined by selected probe diameter;(3) with a set of special Measuring probe is installed to aperture central part with device;(4) continued to extend macropore with the thin drilling bit that the first step beats macropore, To make core around aperture realize stress relieving.Geostress survey equipment based on this method development is existing much to apply case Example, this method, come definitely stress intensity and direction, have the characteristics that measurement accuracy is high by measurement rock deformation amount, but big Most measuring devices are difficult to adapt to the environmental condition of high temperature under gun drilling, high pressure.Traditional stress relief method equipment generallys use Electrical type measures component, and high temperature can make measurement component temperature drift, null offset occur, and hyperosmosis will lead to component The problems such as difficult, equipment is intake is pasted, especially when component and insecure hole wall bonding, test result can be seriously affected Accuracy.In addition, traditional stress relief method completes one-shot measurement work, need that underground adhesive is waited to consolidate, while needing to mention It puts drilling rod 4 times, for the geostress survey in deep hole and superdeep holes, complex procedures, the duration is too long.
Currently, depth is more than 500 meters of drilling, core plugging notifying mechanism of rope core drilling is mostly used to be drilled greatly, core plugging notifying mechanism of rope core drilling is most Big advantage is quickly to lift drilling rod, and existing stress relief method detecting earth stress is required to cooperate with single tube core bit It completes, under the conditions of core plugging notifying mechanism of rope core drilling, measuring cell placed, threading, releases the operations such as drilling and cannot achieve, and is also resulted in In gun drilling, especially under the conditions of core plugging notifying mechanism of rope core drilling, it is difficult to carry out stress relief method detecting earth stress.To sum up, traditional survey Amount technology, measurement component, testing process are not able to satisfy gun drilling and carry out stress relief method crustal stress under core plugging notifying mechanism of rope core drilling The demand of test, there is an urgent need to new measuring technique, measurement component and testing process.
Summary of the invention
The purpose of the present invention is be to provide detecting earth stress device in view of the above-mentioned problems existing in the prior art, also mention For detecting earth stress method.
Above-mentioned purpose of the invention is achieved through the following technical solutions:
Detecting earth stress device, including advanced drilling tool,
Advanced drilling tool includes advanced drilling tool outer tube and advanced drilling tool inner tube,
Advanced drilling tool outer tube includes bullet card pipe and core plugging notifying mechanism of rope core drilling outer tube, bullet card pipe one end and core plugging notifying mechanism of rope core drilling outer tube one end Connection, the core plugging notifying mechanism of rope core drilling outer tube other end are provided with step in annular, and the interior edge of step forms centralizer punched out in annular, One end outer wall that core plugging notifying mechanism of rope core drilling outer tube is provided with step in annular is provided with diamond particles, and core plugging notifying mechanism of rope core drilling outer tube is set It is equipped in annular step in one end of step and annular and constitutes the outer pipe bit of drilling tool,
Advanced drilling tool inner tube includes spring clamping part, power transmission extension rod, centering ring, drilling rod extension rod and centralizer, and spring clamping part setting exists In bullet card pipe, bullet card inside pipe wall offers the card slot being adapted to spring clamping part, and spring clamping part is connect with power transmission extension rod one end, and power transmission is prolonged The boom other end is connect with centralizer one end, and the centralizer other end passes through centralizer punched out and connect with drilling rod extension rod one end, The drilling rod extension rod other end is provided with impregnated diamond, and the inner ring of centering ring is movably set on centralizer, the outer ring of centering ring It is connect with the inner wall of core plugging notifying mechanism of rope core drilling outer tube.
Spring clamping part as described above includes playing card holder outer barrel, bullet card pulling department and bullet clamp,
Playing clamp includes rotating dog, linear tension spring and two clamp blades, and rotating dog is connect with card holder outer barrel inner wall is played, and two Clamp blade one end is movably set on rotating dog, and the other end of two clamp blades connects with the both ends of linear tension spring respectively It connects, the middle part of linear tension spring is connect with bullet card pulling department, and bullet card pulling department is connect with drilling tool spear-head, plays card holder outer cylinder side Part corresponding with clamp blade offers clamp blade stretching hole on wall, plays card holder outer barrel one end and power transmission extension rod one end Connection, the one end for playing card holder outer barrel and power transmission extension rod are arranged restraining position ring block, and the inner ring of hanging ring is movably set in power transmission and prolongs On one end that boom is connect with bullet card holder outer barrel, the outer ring of hanging ring is connect with the inner wall of core plugging notifying mechanism of rope core drilling outer tube, card slot It is corresponding that the position in hole is stretched out with clamp blade.
Power transmission extension rod and drilling rod extension rod as described above are hollow tube, and flow channels are provided in centralizer, are passed The hollow portion both ends of power extension rod are connected to flow channels one end and bullet card holder outer barrel respectively, the flow channels other end and brill The hollow portion of bar extension rod is connected to, and drilling rod extension rod is provided with diamond impregnated one end and offers fluid hole.
Centralizer as described above includes righting butt end and righting taper end, and righting butt end and righting taper end axis connect, and righting is thin The centralizer punched out that step is formed in annular is held, righting butt end passes through centering ring, and the outer diameter of righting butt end is greater than righting The outer diameter of taper end, the outer diameter of righting butt end are less than the internal diameter of centering ring, and the outer diameter of righting butt end is also less than the internal diameter of hanging ring, mistake Circulation road runs through righting butt end and righting taper end.
Detecting earth stress device further includes contact type aperture strain gauge means, contact type aperture strain gauge means packet Sequentially connected salvaging suspension parts, circuit storehouse component, measurement extension rod, contact component and protecting against shock component are included,
Salvaging suspension parts includes measurement spear-head and sealing cover, and measurement spear-head is connect with sealing cover side, sealing cover The other side is provided with sealing cover internal thread end of thread, starts switch one end and is equipped with aerial plug-in unit pin end, the periphery started switch is set It is equipped with switch connection outside screw button, the both ends of data transmission interface are respectively the first connecting pin and second connection end, the first connecting pin Periphery is provided with the coffret male thread being adapted to sealing cover internal thread end of thread, is provided with outside being connected with switch in the first connecting pin Screw thread in the coffret of screw thread adaptation is additionally provided with aerial plug-in unit mother be adapted to aerial plug-in unit pin end in the first connecting pin Connector, second connection end are connect by screw thread with circuit storehouse component one end, and the circuit storehouse component other end is prolonged by screw thread and measurement The connection of boom one end, one end periphery that circuit storehouse component is connect with measurement extension rod are arranged with the bottom hole centralizer of taper, measurement The extension rod other end is connect by screw thread with contact component one end, and the contact component other end is inlaid with protecting against shock component, sealing cover Diameter be greater than annular in step internal diameter.
Detecting earth stress method, comprising the following steps:
The first step assembles advanced drilling tool outer tube and advanced drilling tool inner tube, and drilling rod is passed through to the bullet of screw thread and advanced drilling tool outer tube The connection of card pipe, is hung in advanced drilling tool outer tube in drilling well well using drilling rod,
Wire line coring fisher is connected to the drilling tool spear-head of advanced drilling tool inner tube by second step, and advanced drilling tool inner tube is hung in In drilling rod, wire line coring fisher is transferred, until the spring clamping part of advanced drilling tool inner tube enters in the bullet card pipe of advanced drilling tool outer tube In the card slot of wall, wire line coring fisher and drilling tool spear-head are detached from,
Third step, drilling machine drive drilling rod, and drilling rod drives advanced drilling tool inner tube and advanced drilling tool outer tube, transfers to bottom hole, make drilling rod The end of extension rod touches rock, then starts drilling machine, opens slush pump, and drilling fluid is sent into drilling rod by slush pump, and by Drilling rod flows between advanced drilling tool inner tube and advanced drilling tool outer tube, and drilling fluid successively stretches out hole via clamp blade again, plays card holder Outer barrel, power transmission extension rod, centralizer, drilling rod extension rod reach drilling rod extension rod end and form circulation of drilling fluid;Drilling machine drives Drilling rod rotation, drilling rod drive advanced drilling tool outer tube rotation, and advanced drilling tool outer tube drives advanced drilling tool inner tube rotation, drilling rod extension rod The impregnated diamond of end starts rock cutting, and drilling to centralizer contacts rock always, forms instrument connection in foot of hole, When centralizer contacts rock, i.e. stopping is crept into,
4th step transfers wire line coring fisher, connect wire line coring fisher with drilling tool spear-head, pass through wire line coring Fisher above mentions drilling tool spear-head, is detached from from three bullet card rooms to make to play clamp, wire line coring fisher is by advance drilling Tool inner tube separates after salvaging with drilling tool spear-head, then by wire line coring fisher and contact type aperture strain gauge means Measurement spear-head connection, contact type aperture strain gauge means are hung in drilling rod using wire line coring fisher, transfer Wire line coring fisher enters until the measurement extension rod, contact component, protecting against shock component of contact type aperture strain gauge means In instrument connection;Wire line coring fisher and measurement spear-head are detached from, the distance touching of instrument connection hole wall is measured by contact component The distance of the central axis of head part,
5th step starts drilling machine, opens slush pump, and drilling machine is made to drive drilling rod rotation, and drilling rod drives advanced drilling tool outer tube rotation, bores Have outer pipe bit and start rock cutting, keep drilling state, drilling fluid enters drilling rod by slush pump, by measuring on well head Portion's residue run of steel, calculates advanced drilling tool outer tube in the drilling depth of bottom hole, when drilling depth has been more than the depth of instrument connection, Stop drilling, at this point, drilling out an annulus column core in bottom hole, is taken off completely around annulus column core with hole wall rock From, the strain displacement that instrument connection hole wall occurs is measured by contact component,
6th step starts drilling machine, above mentions drilling rod, drilling rod drives advanced drilling tool outer tube to move upwards, when core plugging notifying mechanism of rope core drilling outer tube Annular in step movement to the sealing cover position of contact type aperture strain gauge means, drive sealing cover to move upwards, will touch Hair style aperture strain gauge means out of instrument connection from having pulled out out, and when contact type aperture, strain gauge means pull away instrument connection, Then it keeps drilling rod motionless, wire line coring fisher is connect with spear-head is measured, by wire line coring fisher by contact Well head is mentioned on the strain gauge means of formula aperture, realizes the recycling of contact type aperture strain gauge means.
Compared with prior art, the present invention having the advantage that
1, structure is simple.Advanced drilling tool is made of the drilling process for realizing instrument connection, the strain of contact type aperture simple and mechanical component Measuring device, which has the function of recording offline, stores data, breaks through the limitation to fathom;
2) safe and reliable.Advanced drilling tool and contact type aperture strain gauge means are separated, ensure the strain measurement of contact type aperture The safety of device;
3) easy to operate.Advanced drilling tool and contact type aperture strain gauge means realize equipment using site operation equipment Installation, measurement, recycling, easy to operate, easy to accomplish, measurement efficiency is higher;
4) low to environmental requirement.The influence for overcoming environment can be used for the geostress survey of deep hole and superdeep holes.
Detailed description of the invention
Fig. 1 is the assembling structure schematic diagram of advanced drilling tool;
Fig. 2 a is the structural schematic diagram of spring clamping part;
Fig. 2 b is the structural schematic diagram for playing clamp;
Fig. 3 a is the overlooking structure diagram of bullet card connecting tube;
Fig. 3 b is the schematic front view of bullet card connecting tube;
Fig. 4 a is that spring clamping part snaps onto the status diagram in card slot;
Fig. 4 b is the status diagram that spring clamping part and card slot are detached from;
Fig. 5 is the assembling structure schematic diagram of contact type aperture strain gauge means;
Fig. 6 a is the structural schematic diagram of contact component;
Fig. 6 b is the mounting structure schematic diagram of contact pilotage;
Fig. 7 is the schematic diagram of internal structure of contact type aperture strain gauge means;
Fig. 8 in-site measurement operation schematic diagram;Wherein: a is the status diagram that advanced drilling tool outer tube is put into;B is in advanced drilling tool The status diagram of advanced drilling tool inner tube is packed into outer tube;C is the status diagram for carrying out test hole drilling;D is to be put into contact The status diagram of formula aperture strain gauge means;E is the status diagram that advanced drilling tool outer tube continues drilling;F is advance drilling Has the status diagram that outer tube drives the recycling of contact type aperture strain gauge means.
In figure, 1- bullet card pipe;2- spring clamping part, 3- core plugging notifying mechanism of rope core drilling outer tube, 4- power transmission extension rod;5- centering ring;6- is bored Bar extension rod;7- centralizer;8- hanging ring;9- salvages suspension parts;10- circuit storehouse component;11- bottom hole centralizer;12- is surveyed Measure extension rod;13- contact component;14- protecting against shock component;The advanced drilling tool outer tube of 15-;The advanced drilling tool inner tube of 16-;
101- card slot;102- bullet card connecting tube;
21- drilling tool spear-head;22- bullet clamp;23- stop collar;24- threadiness tension spring;25- bullet card holder outer barrel;26- bullet OK a karaoke club Dynamic portion;27- clamp blade;28- rotating dog;29- clamp blade stretches out hole;
31- bullet card ear;32- limits cylinder;
Step in 301- annular;302- centralizer punched out;
61- pressure spring;62- contact pilotage;63- limits cylinder body;64- limiting slot;65- notch;66- step surface;
71- measures spear-head;72- sealing cover;73- is started switch;74- data transmission interface;
81- wire line coring fisher.
Specific embodiment
For the ease of those of ordinary skill in the art understand and implement the present invention, below with reference to embodiment to the present invention make into The detailed description of one step, it should be understood that implementation example described herein is merely to illustrate and explain the present invention, and is not used to limit The fixed present invention.
Core plugging notifying mechanism of rope core drilling stress relief method detecting earth stress device, including advanced drilling tool and the strain measurement of contact type aperture Device,
1, advanced drilling tool
Advanced drilling tool includes advanced drilling tool outer tube 15 and advanced drilling tool inner tube 16,
Advanced drilling tool outer tube 15 includes bullet card pipe 1 and core plugging notifying mechanism of rope core drilling outer tube 3, outside 1 one end of bullet card pipe and core plugging notifying mechanism of rope core drilling The connection of 3 one end of pipe, 3 other end of core plugging notifying mechanism of rope core drilling outer tube are provided with step 301 in annular, and step 301 is interior along shape in annular At centralizer punched out 302, one end outer wall that core plugging notifying mechanism of rope core drilling outer tube 3 is provided with step 301 in annular is provided with diamond Particle, core plugging notifying mechanism of rope core drilling outer tube 3 are provided in annular step 301 in one end of step 301 and annular and constitute drilling tool outer tube Drill bit.The mosaic diamond particle on step 301 in annular protects step 301 in annular not worn by rock.
Advanced drilling tool inner tube 16 includes spring clamping part 2, power transmission extension rod 4, centering ring 5, drilling rod extension rod 6 and centralizer 7, bullet Fastener 2 is arranged in bullet card pipe 1, and 1 inner wall of bullet card pipe offers the card slot 101 being adapted to spring clamping part 2, and spring clamping part 2 prolongs with power transmission The connection of 4 one end of boom, 4 other end of power transmission extension rod are connect with 7 one end of centralizer, and 7 other end of centralizer is pierced by across centralizer Hole 302 is connect with 6 one end of drilling rod extension rod, and 6 other end of drilling rod extension rod is provided with impregnated diamond (test drill), righting The inner ring of ring 5 is movably set on centralizer 7, and the outer ring of centering ring 5 is connect with the inner wall of core plugging notifying mechanism of rope core drilling outer tube 3.
Spring clamping part 2 includes playing card holder outer barrel 25, bullet card pulling department 26 and bullet clamp 22,
It plays clamp 22 and includes rotating dog 28, linear tension spring 24 and two clamp blades 27, rotating dog 28 and bullet card holder outer barrel 25 Inner wall connection, two 27 one end of clamp blade are movably set on rotating dog 28, the other end difference of two clamp blades 27 It is connect with the both ends of linear tension spring 24, the middle part of linear tension spring 24 is connect with bullet card pulling department 26, bullet card pulling department 26 and drilling tool Spear-head 21 connects, and plays part corresponding with clamp blade 27 on 25 side wall of card holder outer barrel and offers clamp blade stretching hole 29.It plays 25 one end of card holder outer barrel to connect with 4 one end of power transmission extension rod, plays what card holder outer barrel 25 was connect with power transmission extension rod 4 One end is arranged restraining position ring block 23, and the inner ring of hanging ring 8 is movably set in one that power transmission extension rod 4 is connect with bullet card holder outer barrel 25 On end, the outer ring of hanging ring 8 is connect with the inner wall of core plugging notifying mechanism of rope core drilling outer tube 3.Card slot 101 and clamp blade stretch out the position in hole 29 It sets corresponding.
Power transmission extension rod 4 and drilling rod extension rod 6 are hollow tube, and flow channels, power transmission extension rod are provided in centralizer 7 4 hollow portion both ends are connected to flow channels one end and bullet card holder outer barrel 25 respectively, and the flow channels other end prolongs with drilling rod The hollow portion of boom 6 is connected to, and drilling rod extension rod 6 is provided with diamond impregnated one end and offers fluid hole.
As a preferred embodiment, playing clamp 22 is three, and bullet card pipe 1 includes three bullet card connecting tubes 102, the connection of bullet card Pipe 102 includes limit cylinder 32 and two bullet card ears 31, and limit 32 one end of cylinder is male thread end, and the other end is internal thread end of thread, The male thread end setting of cylinder 32 is limited there are two bullet card ear 31, two bullet card ears 31 are divided with the axisymmetrical for limiting cylinder 32 Cloth, the internal thread end of thread for limiting the male thread end of cylinder 32 and the limit cylinder 32 of adjacent bullet card connecting tube 102 are connected by screw thread It connects, and two bullet card ears 31 on the male thread end of limit cylinder 32 are inserted into the limit cylinder of adjacent bullet card connecting tube 102 In 32 internal thread end of thread, the 102 internal thread end of thread of bullet card connecting tube positioned at end passes through screw thread and 3 one end of core plugging notifying mechanism of rope core drilling outer tube Connection, another 102 male thread end of bullet card connecting tube positioned at end is connected by screw thread with the standard drill pipe of diameter 114mm. Along the periphery at the male thread end of limit cylinder 32, the gap between two bullet card ears 31 constitutes card slot 101.
Each bullet clamp 22 include 27, rotating dogs 28 of two panels clamp blade and a linear tension spring 24, two panels clamp One end of blade 27 is movably set on rotating dog 28, can be made rotating motion around rotating dog 28, bullet card pulling department 26 not When pulling linear tension spring 24, under the action of the tension of linear tension spring 24, two panels clamp blade 27 is flared out in splayed,
Clamp blade 27 keeps open configuration under the action of linear tension spring 24.The clamp blade 27 of opening passes through clamp blade It stretches out hole 29 and is caught in the card slot 101 of 1 inner wall of bullet card pipe, the limitation clamp blade 27 of card slot 101 is circumferentially opposed with bullet card pipe 1 Movement under the circumferential position-limiting action of card slot 101, drives spring clamping part 2 to rotate, bullet when standard drill pipe band moves the rotation of card pipe 1 The rotation of fastener 2 drives power transmission extension rod 4 to rotate, and the rotation of power transmission extension rod 4 drives centralizer 7 and drilling rod extension rod 6 to rotate, and carries out Drilling.
It can be site operation behaviour by wire line coring fisher 81(wire line coring fisher when needing to salvage recycling Make tool, the standard fitting tool that drilling crew has, not within the scope of this patent) it is connect with drilling tool spear-head 21, pass through Pull drilling tool spear-head 21, band OK a karaoke club of moving moves portion 26, and bullet card pulling department 26 pulls linear tension spring 24, and linear tension spring 24 pulls The two panels clamp blade 27 for playing clamp 22 closes up withdrawal, and two panels clamp blade 27 is detached from the card slot 101 of 1 inner wall of bullet card pipe, bullet card Part 2 drives power transmission extension rod 4, centering ring 5 and drilling rod extension rod 6 to recycle.Centralizer 7 includes righting butt end and righting taper end, is helped Positive butt end and righting taper end axis connect, and righting taper end passes through the centralizer punched out 302 that step is formed in annular, and righting butt end passes through Centering ring 5, the outer diameter of righting butt end are greater than the outer diameter of righting taper end, and the outer diameter of righting butt end is less than the internal diameter of centering ring 5, righting The outer diameter of butt end is also less than the internal diameter of hanging ring 8.Flow channels run through righting butt end and righting taper end.
Centering ring 5 contacts with each other with centralizer 7, keeps concentric shafts distribution;The inner ring and power transmission extension rod of hanging ring 8 4 contact with each other, and keep concentric shafts distribution;The side of hanging ring 8 and the side of stop collar 23 contact with each other, and limit advance drilling Having the insertion depth relationship between inner tube 16 and advanced drilling tool outer tube 15, the outer diameter of stop collar 23 is greater than the internal diameter of hanging ring 8, when Stop collar 23 contacts with each other with hanging ring 8, and bullet card pipe 1 can be entered by playing clamp 22, plays clamp 22 under the action of linear tension spring 24 It opens, clamp blade 27 keeps open configuration under the action of linear tension spring 24.The clamp blade 27 of opening passes through clamp blade It stretches out hole 29 and is caught in the card slot 101 of 1 inner wall of bullet card pipe, limitation plays rotate in a circumferential direction movement and the axial movement of clamp 22.
Component materials and processing request: three bullet card rooms 1 of advanced drilling tool outer tube, core plugging notifying mechanism of rope core drilling outer tube 3 are all made of tune Steel production processed, screw thread means suitable button is long to be no less than five screw threads, and rectangle screw thread detains width 5mm;Core plugging notifying mechanism of rope core drilling outer tube 3 is opened One end equipped with centralizer punched out 302 is inlaid with for rock cutting diamond;Hanging ring 8, centering ring 5 require to use bearing Steel production.Spring clamping part 2, power transmission extension rod 4, drilling rod extension rod 6 are all made of modulation steel production, and screw thread means suitable button length is no less than Five screw threads, rectangle screw thread, tooth pitch 5mm;Centralizer 7 is made of bearing steel, and 6 front end of drilling rod extension rod must use impregnated gold Hard rock protection.Advanced drilling tool inner tube and advanced drilling tool outer tube assemble up, it is desirable that the processing gap of centering ring 5 and centralizer 7 is not 1mm can be greater than.Advanced drilling tool outer tube must carry out demagnetization processing before factory.
2, contact type aperture strain gauge means
Contact type aperture strain gauge means include sequentially connected salvaging suspension parts 9, circuit storehouse component 10, measurement extension rod 12, contact component 13, protecting against shock component 14.One end that circuit storehouse component 10 is connect with measurement extension rod 12 is arranged with bottom hole righting Device 11.
Contact component 13 includes: pressure spring 61, contact pilotage 62, limit cylinder body 63 and limiting slot 64.In contact component 13, position Syntagmatic performance are as follows: limit 63 circumferential direction of cylinder body is uniformly distributed the contact pin holes of installation contact pilotage 62, and contact pilotage 62 is interspersed in limit cylinder body In 63, contact pilotage 62 remains out stretching state under the action of pressure spring 61.Connection relationship performance are as follows: contact pilotage 62 is from needle point to needle Head is machined with multi-stage stairs face, and pressure spring 61 is inserted in contact pilotage 62, the step face contact of 61 one end of pressure spring and 62 needle of contact pilotage, pressure 61 other end of spring is contacted with the contact pin holes eyelet bottom of limit cylinder body 63;After being packed into pressure spring 61 and contact pilotage 62 in contact pin holes, peace Limiting slot 64 is filled, limiting slot 64 is the thin-walled cylinder for having notch, and the outer diameter diameter of limiting slot 64 is slightly less than limit cylinder body 63 Internal diameter, the notch 65 of limiting slot 64 keeps off on the step surface 66 of contact pilotage 62, limits the moving range of contact pilotage 62.62 syringe needle of contact pilotage Under the action of stress, can to limit cylinder body 63 inside move, release stress effect after, contact pilotage 62 can to limit cylinder body 63 outside Mobile, when the step surface of contact pilotage 62 touches limiting slot 64, the stopping of contact pilotage 62 is displaced outwardly.Limit 63 one end of cylinder body passes through screw thread It is connect with measurement extension rod 12, limit 63 other end of cylinder body is embedded with protecting against shock component 14.
Salvaging suspension parts 9 includes: measurement spear-head 71 and sealing cover 72.Measure spear-head 71 and sealing cover 72 1 Side connection, 72 other side of sealing cover are provided with sealing cover internal thread end of thread, and measurement spear-head 71 and sealing cover 72 are at same center On axis.
It starts switch 73 one end and aerial plug-in unit pin end is installed, the periphery for starting switch 73 is provided with switch connection outside screw Button, the both ends of data transmission interface 74 are respectively the first connecting pin and second connection end, the first connecting pin periphery be provided with it is close The coffret male thread of internal thread end of thread adaptation is covered, the transmission for the male thread adaptation that is connected with switch is provided in the first connecting pin Screw thread in interface is additionally provided with the aerial plug-in unit female connector being adapted to aerial plug-in unit pin end in the first connecting pin.Second connection End is connect with 10 one end of circuit storehouse component by screw thread and is provided with seal groove at screw thread, and waterproof sealing, circuit are played the role of Component 10 other end in storehouse is connect by screw thread with measurement 12 one end of extension rod, and circuit storehouse component 10 is connect with measurement extension rod 12 One end periphery is arranged with the bottom hole centralizer 11 of taper, and measurement 12 other end of extension rod is connected by screw thread and 13 one end of contact component It connects, 13 other end of contact component is inlaid with protecting against shock component 14.
It starts switch in the rotatable coffret for entering the first connecting pin of switch connection outside screw button of 73 peripheries in screw thread, After starting switch 73 and being screwed into place, aerial plug-in unit pin end is connect with aerial plug-in unit female connector;1, the 2 of aerial plug-in unit pin end Pin is shorted as pin, 1,2 pins are shorted, and corresponding 1,2 pin of aerial plug-in unit female connector is switch pin, switch pin control After the open circuit of anode processed, aerial plug-in unit pin end and the contact of aerial plug-in unit female connector, 1,2 pins of aerial plug-in unit pin end 1,2 pins of aerial plug-in unit female connector are shorted, the short circuit of switch pin is realized, plays the role of closing the switch, make battery to number It powers according to collector.The inner space of measurement extension rod 12 is equipped with displacement perception component, and displacement perception component is to contact The radial displacement of component 13 is perceived.Data collector is connect with displacement perception component, obtains the radial direction of contact component 13 Displacement, data collector, displacement perception component and contact component 13 can be realized by existing equipment.
The erection sequence of data collector start and stop in circuit storehouse component 10 is showed themselves in that be opened to data collector It is dynamic, 73 access data transmission interfaces 74 will be started switch, aerial plug-in unit pin end is connect with aerial plug-in unit female connector, then will sealing The sealing cover internal thread end of thread of lid 72 is connect with the coffret male thread of data transmission interface 74.Stop to data collector, Sealing cover 72 is separated with data transmission interface 74, then 73 will be started switch and separated with data transmission interface 74, can be disconnected interior The power supply of portion's battery.
In Fig. 5, the basic implementation method that contact type aperture strain gauge means measure can be summarized are as follows: measurement is salvaged Spearhead 71 and wire line coring fisher 81 are connected with each other, and contact type aperture strain gauge means are sent to test position, measurement is prolonged Boom 12 passes through centralizer punched out 302, and bottom hole centralizer 11 is fastened in centralizer punched out 302;Contact pilotage 62 is in stress It under effect, is moved inside cylinder body 63 to limiting, the inner space of measurement extension rod 12 is equipped with displacement perception component, by contact pilotage 62 needle point misalignment captures, and by the number inside the data information to circuit storehouse component 10 of data line transmitting radial displacement According to collector, the inner space of circuit storehouse component 10 is equipped with battery and data collector, and data are collected device and RAM card connects It connects, RAM card is connected with reading data pin of the aerial plug-in unit female connector in data transmission interface 74 in addition to 1,2 pins. After the completion of in-site measurement, wire line coring fisher 81 is transferred along drilling rod, is caught measurement spear-head 71 and is connected with each other, passes through Wirerope draws contact type aperture strain gauge means to ground, rotates and starts switch 73, makes to start switch 73 disengaging data biography Defeated interface 74 exposes the aerial plug-in unit female connector on data transmission interface 74, and it is aerial plug-in unit respectively that staff, which prepares both ends, The data switch head of pin end and USB interface, the reading data pin and data of the aerial plug-in unit pin end of data switch head pass The reading data pin of aerial plug-in unit female connector on defeated interface 74 is corresponding, and the aerial plug-in unit of USB interface and data switch head is public The reading data pin of connector is correspondingly connected with, the aerial plug-in unit pin end of data switch head and the aviation on data transmission interface 74 The USB interface of the connection of plug-in unit female connector, data switch head is connect by data line with computer, computer reading circuit storehouse component The data information of radial displacement can be imported computer by the RAM card in 10 inside.
Component materials and processing request: suspension parts 9, circuit storehouse component 10, bottom hole centralizer 11, measurement extension rod are salvaged 12, contact component 13 is all made of stainless steel.Screw thread means suitable uses closely-pitched screw thread, and tooth pitch 1mm is necessary at all screwed connections Seal groove is set, and sealing ring compression ratio is controlled 70% ~ 80%.The displacement range and limit cylinder of contact pilotage 62 in contact component 13 The diameter of body 63, the drilling diameter after should fully considering the impregnated Diamond Cutting rock of 6 end of drilling rod extension rod, contact pilotage 62 The displacement maximum value of stretching limit 63 outer diameter of cylinder body and the sum of the diameter of limit cylinder body 63 have to be larger than drilling diameter, and limit The diameter of position cylinder body 63 is necessarily less than drilling diameter.Protecting against shock component 14 must be made of flexible material, such as nylon MC66.
It is not attached between advanced drilling tool and contact type aperture strain gauge means, but the two cooperates and completes Stress relief method detecting earth stress process.The effect of advanced drilling tool outer tube is, can be directly connected to drilling rod, and transmitting drilling rod passes The torque passed, in addition, advanced drilling tool outer tube can realize stress relieving with rock cutting, the rock cutting cyclization muck heart; The effect of advanced drilling tool inner tube is, can connect with advanced drilling tool outer tube, and under the drive of advanced drilling tool outer tube, advance drilling Have the rock at the diamond rotary cutting drilling hole bottom in inner tube, forms the instrument connection with constant depth, diameter in bottom hole;Touching The effect of hair style aperture strain gauge means is, after advanced drilling tool inner tube creeps into and to form instrument connection, installs contact type aperture In strain gauge means to instrument connection, makes the 62 engaged test hole hole wall of contact pilotage on contact pilotage component 13, pass through 62 transfer hole of contact pilotage Wall displacement, records the borehole wall deformation process before and after stress relieving.
3, core plugging notifying mechanism of rope core drilling stress relief method detecting earth stress device and method, comprising the following steps:
The first step assembles advanced drilling tool outer tube 15 and advanced drilling tool inner tube 16, and the drilling rod of diameter 114mm by screw thread and is surpassed The bullet card pipe 1 of preceding drilling tool outer tube 15 connects, and is hung in advanced drilling tool outer tube 15 in drilling well well using drilling rod, and will be outside advanced drilling tool Pipe 15 is placed on one meter of remote position of the bottom hole apart from drilling well, as shown in Figure 8 a.
Wire line coring fisher is connected to the drilling tool spear-head 21 of advanced drilling tool inner tube 16 by second step, with hoist engine band Dynamic wire line coring fisher, by advanced drilling tool inner tube 16 hang in drilling rod (drilling rod: in drilling project, drilling rod is standard geologic drilling rod, Drilling rod makes to connect between drilling machine and drilling tool, transmits torque, pressure, hydraulic pressure, mud) in, decentralization wire line coring fisher is until super Preceding drilling tool inner tube 16 is contacted with advanced drilling tool outer tube 15, and the spring clamping part 2 of advanced drilling tool inner tube 16 enters advanced drilling tool outer tube 15 In the card slot 101 of 1 inner wall of bullet card pipe, hoist engine locking is then kept, safe off card device is installed, so that wire line coring fisher It is detached from drilling tool spear-head 21, after wire line coring fisher and the disengaging of drilling tool spear-head 21, as shown in Figure 8 b.
Third step, drilling machine drive drilling rod, and drilling rod drives advanced drilling tool inner tube and advanced drilling tool outer tube, transfers to bottom hole, make The end of drilling rod extension rod 6 touches rock, then starts drilling machine, opens slush pump, and drilling fluid is sent into drilling rod by slush pump, It is flowed between advanced drilling tool inner tube and advanced drilling tool outer tube by drilling rod again, and at hanging ring 8 and stop collar 23, flow-passing surface is positive Tool becomes smaller, and formation builds the pressure, and forces drilling fluid to stretch out hole 29 via clamp blade and enters in bullet card holder outer barrel 25, plays outside card holder Cylinder 25 is connected to power transmission extension rod 4, and power transmission extension rod 4 is connected to by centralizer 7 with drilling rod extension rod 6, power transmission extension rod 4 and Drilling rod extension rod 6 is inner hollow, and drilling fluid can successively pass through power transmission extension rod 4, centralizer 7 and drilling rod extension rod 6, bore 6 end of bar extension rod forms circulation of drilling fluid;Start the drilling and forming hole work of instrument connection later, drilling machine drives drilling rod rotation, bores Bar drives advanced drilling tool outer tube rotation, and advanced drilling tool outer tube drives advanced drilling tool inner tube rotation, thus 6 end of drilling rod extension rod Impregnated diamond start rock cutting, the circulation of drilling fluid of end takes away rock powder, always drilling arrive 7 tactite of centralizer Stone forms instrument connection in foot of hole, when the contact rock of centralizer 7, is formed and is built the pressure at rock and centralizer 7, pass through mud The Pump pressure meter of pump can be clearly visible pump pressure and increase, and can stop creeping at this time, at this point, drilling rod extension rod 6 is located in instrument connection, such as Shown in Fig. 8 c.
4th step transfers wire line coring fisher using hoist engine, makes wire line coring fisher and drilling tool spear-head 21 Connection pulls drilling tool spear-head 21 by hoist engine, and drilling tool spear-head 21 above proposes movement, to make to play clamp 22 from three bullets It is detached from card room 1, wire line coring fisher can salvage advanced drilling tool inner tube;After salvaging, wire line coring is salvaged Device is separated with drilling tool spear-head 21, then by the measurement fishing spear of wire line coring fisher and contact type aperture strain gauge means First 71 connection, is hung in contact type aperture strain gauge means in drilling rod using wire line coring fisher, and decentralization wire line coring is beaten Device is fished out until the measurement extension rod 12, contact component 13, protecting against shock component 14 of contact type aperture strain gauge means enter test Kong Zhong;Then hoist engine locking is kept, safe off card device is installed, does the movement of falling object until wire line coring is beaten along wirerope Device is fished out, realizes that wire line coring fisher and measurement spear-head 71 are detached from, as shown in figure 8d.At this point, the touching in contact component 13 Needle 62 will be contacted with the hole wall of instrument connection, and the position of displacement perception component perception contact pilotage 62 obtains instrument connection hole wall distance The distance of the central axis of contact component 13, the position of data collector recording stylus 62 are simultaneously stored in RAM card.
5th step starts drilling machine, opens slush pump, and drilling machine is made to drive drilling rod rotation, and drilling rod drives advanced drilling tool outer tube 15 Rotation, the outer pipe bit of drilling tool start rock cutting, keep drilling state, and drilling fluid enters drilling rod by slush pump, and in drilling tool Circulation of drilling fluid is formed at outer pipe bit;By measuring in well head top residue run of steel, calculate advanced drilling tool outer tube in hole The drilling depth at bottom can stop creeping into, as figure 8 e shows when drilling depth has been more than the depth of instrument connection.At this point, in bottom hole An annulus column core is drilled out, is completely disengaged around annulus column core with hole wall rock, the ground in annulus column core is answered Power is released, and strain displacement occurs so as to cause instrument connection hole wall, and the contact pilotage 62 in contact component 13 is in the work of pressure spring 61 It under, is in close contact with the hole wall of instrument connection, also will drive the generation of contact pilotage 62 accordingly when strain displacement occurs for instrument connection hole wall Strain displacement, this deformation process of hole wall are displaced by perception component perception, and are acquired by data collector and be stored in interior It deposits in card.
6th step starts drilling machine, above mentions drilling rod, and drilling rod drives advanced drilling tool outer tube 15 to move upwards, when wire line coring bores Have 72 position of sealing cover that step 301 in the annular of outer tube 3 moves to contact type aperture strain gauge means, sealing cover 72 and rope Step 301 contacts in the annular of rope core bit outer tube 3, since the diameter of sealing cover 72 is greater than the internal diameter of step 301 in annular, That is the diameter of sealing cover 72 diameter that is greater than centralizer punched out 302, advanced drilling tool outer tube 15 drives sealing cover when moving upwards 72 move upwards, therefore drill bit will drive drilling rod and advanced drilling tool outer tube 15 is driven to move upwards, and drilling rod drives advanced drilling tool outer tube 15 drive contact type aperture strain gauge means move upwards, and have pulled out and have come out out of instrument connection, as illustrated in fig. 8f;When contact type hole Diameter strain gauge means pull away instrument connection, then keep drilling rod motionless, transfer wire line coring fisher using hoist engine, make rope Coring fisher is connect with measurement spear-head 71, pulls measurement spear-head 71 by hoist engine, contact type aperture is strained Well head is mentioned in measuring device, realizes the recycling of contact type aperture strain gauge means.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention The technical staff in domain can make various modifications, supplement to described specific embodiment or replace by a similar method In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.

Claims (6)

1. detecting earth stress device, including advanced drilling tool, which is characterized in that
Advanced drilling tool includes advanced drilling tool outer tube (15) and advanced drilling tool inner tube (16),
Advanced drilling tool outer tube (15) includes bullet card pipe (1) and core plugging notifying mechanism of rope core drilling outer tube (3), and bullet card pipe (1) one end takes with rope The connection of core drilling tool outer tube (3) one end, core plugging notifying mechanism of rope core drilling outer tube (3) other end are provided with step in annular (301), platform in annular The interior edge of rank (301) forms centralizer punched out (302), and core plugging notifying mechanism of rope core drilling outer tube (3) is provided with step in annular (301) One end outer wall is provided with diamond particles, and core plugging notifying mechanism of rope core drilling outer tube (3) is provided with one end and the ring of step in annular (301) Step (301) constitutes the outer pipe bit of drilling tool in shape,
Advanced drilling tool inner tube (16) includes spring clamping part (2), power transmission extension rod (4), centering ring (5), drilling rod extension rod (6) and righting Device (7), in bullet card pipe (1), bullet card pipe (1) inner wall offers the card slot being adapted to spring clamping part (2) for spring clamping part (2) setting (101), spring clamping part (2) is connect with power transmission extension rod (4) one end, and power transmission extension rod (4) other end and centralizer (7) one end connect It connects, centralizer (7) other end passes through centralizer punched out (302) and connect with drilling rod extension rod (6) one end, drilling rod extension rod (6) The other end is provided with impregnated diamond, and the inner ring of centering ring (5) is movably set on centralizer (7), the outer ring of centering ring (5) with The inner wall of core plugging notifying mechanism of rope core drilling outer tube (3) connects.
2. detecting earth stress device according to claim 1, which is characterized in that the spring clamping part (2) includes playing card holder Outer barrel (25), bullet card pulling department (26) and bullet clamp (22),
Playing clamp (22) includes rotating dog (28), linear tension spring (24) and two clamp blades (27), rotating dog (28) and bullet card The connection of frame outer barrel (25) inner wall, two clamp blade (27) one end are movably set on rotating dog (28), two clamp leaves The other end of piece (27) is connect with the both ends of linear tension spring (24) respectively, the middle part of linear tension spring (24) and bullet card pulling department (26) Connection, bullet card pulling department (26) connect with drilling tool spear-head (21), on bullet card holder outer barrel (25) side wall with clamp blade (27) corresponding part offers clamp blade stretching hole (29), plays card holder outer barrel (25) one end and power transmission extension rod (4) one End connection, the one end for playing card holder outer barrel (25) and power transmission extension rod (4) are arranged restraining position ring block (23), the inner ring of hanging ring (8) It is movably set on one end that power transmission extension rod (4) is connect with bullet card holder outer barrel (25), the outer ring of hanging ring (8) takes with rope The inner wall of core drilling tool outer tube (3) connects, and card slot (101) is corresponding with the clamp blade stretching position of hole (29).
3. detecting earth stress device according to claim 1, which is characterized in that the power transmission extension rod (4) and drilling rod Extension rod (6) is hollow tube, is provided with flow channels in centralizer (7), the hollow portion both ends of power transmission extension rod (4) respectively with Flow channels one end and bullet card holder outer barrel (25) connection, the hollow portion company of the flow channels other end and drilling rod extension rod (6) Logical, drilling rod extension rod (6) is provided with diamond impregnated one end and offers fluid hole.
4. detecting earth stress device according to claim 3, which is characterized in that the centralizer (7) includes that righting is thick End and righting taper end, righting butt end and righting taper end axis connect, and righting taper end passes through the centralizer punched out that step is formed in annular (302), righting butt end passes through centering ring (5), and the outer diameter of righting butt end is greater than the outer diameter of righting taper end, and the outer diameter of righting butt end is small Internal diameter in centering ring (5), the outer diameter of righting butt end are also less than the internal diameter of hanging ring (8), flow channels through righting butt end and Righting taper end.
5. detecting earth stress device according to claim 4, which is characterized in that further include contact type aperture strain measurement dress It sets, contact type aperture strain gauge means include sequentially connected salvaging suspension parts (9), circuit storehouse component (10), measure and prolong Boom (12), contact component (13) and protecting against shock component (14),
Salvaging suspension parts (9) includes measurement spear-head (71) and sealing cover (72), measures spear-head (71) and sealing cover (72) side connects, and sealing cover (72) other side is provided with sealing cover internal thread end of thread, starts switch (73) one end and be equipped with aviation Plug-in unit pin end, the periphery for starting switch (73) are provided with switch connection outside screw button, the both ends difference of data transmission interface (74) For the first connecting pin and second connection end, the first connecting pin periphery is provided with outside the coffret being adapted to sealing cover internal thread end of thread Screw thread is provided with screw thread in the coffret for the male thread adaptation that is connected with switch in the first connecting pin, also sets in the first connecting pin It is equipped with the aerial plug-in unit female connector being adapted to aerial plug-in unit pin end, second connection end passes through screw thread and circuit storehouse component (10) one End connection, circuit storehouse component (10) other end by screw thread with measurement extension rod (12) one end connect, circuit storehouse component (10) and One end periphery of measurement extension rod (12) connection is arranged with the bottom hole centralizer (11) of taper, and measurement extension rod (12) other end is logical It crosses screw thread to connect with contact component (13) one end, contact component (13) other end is inlaid with protecting against shock component (14), sealing cover (72) diameter is greater than the internal diameter of step (301) in annular.
6. detecting earth stress method utilizes the detecting earth stress device described in claim 5, which is characterized in that including following step It is rapid:
The first step assembles advanced drilling tool outer tube (15) and advanced drilling tool inner tube (16), and drilling rod is passed through screw thread and advanced drilling tool The bullet card pipe (1) of outer tube (15) connects, and is hung in advanced drilling tool outer tube (15) in drilling well well using drilling rod,
Wire line coring fisher is connected to the drilling tool spear-head (21) of advanced drilling tool inner tube (16), by advanced drilling tool by second step Inner tube (16) is hung in drilling rod, transfers wire line coring fisher, until the spring clamping part (2) of advanced drilling tool inner tube (16) enters in advance It is in the card slot (101) of bullet card pipe (1) inner wall of drilling tool outer tube (15), wire line coring fisher and drilling tool spear-head (21) is de- From,
Third step, drilling machine drive drilling rod, and drilling rod drives advanced drilling tool inner tube and advanced drilling tool outer tube, transfers to bottom hole, make drilling rod The end of extension rod (6) touches rock, then starts drilling machine, opens slush pump, and drilling fluid is sent into drilling rod by slush pump, again Flowed between advanced drilling tool inner tube and advanced drilling tool outer tube by drilling rod, drilling fluid again successively via clamp blade stretch out hole (29), Play card holder outer barrel (25), power transmission extension rod (4), centralizer (7), drilling rod extension rod (6) arrival drilling rod extension rod (6) end shape At circulation of drilling fluid;Drilling machine drives drilling rod rotation, and drilling rod drives advanced drilling tool outer tube rotation, and advanced drilling tool outer tube drives advance drilling Has inner tube rotation, the impregnated diamond of drilling rod extension rod (6) end starts rock cutting, and drilling connects to centralizer (7) always Rock is touched, forms instrument connection in foot of hole, when centralizer (7) contact rock, i.e. stopping is crept into,
4th step transfers wire line coring fisher, connect wire line coring fisher with drilling tool spear-head (21), pass through rope Coring fisher above mentions drilling tool spear-head (21), to make to play clamp (22) disengaging, wire line coring from three bullet card rooms (1) Fisher separates after salvaging advanced drilling tool inner tube with drilling tool spear-head (21), then by wire line coring fisher and contact The measurement spear-head (71) of formula aperture strain gauge means connects, and strains contact type aperture using wire line coring fisher and surveys Amount device is hung in drilling rod, measurement extension rod of the decentralization wire line coring fisher until contact type aperture strain gauge means (12), contact component (13), protecting against shock component (14) enter in instrument connection;By wire line coring fisher and measurement spear-head (71) it is detached from, the distance of central axis of the instrument connection hole wall apart from contact component (13) is measured by contact component (13),
5th step starts drilling machine, opens slush pump, and drilling machine is made to drive drilling rod rotation, and drilling rod drives advanced drilling tool outer tube (15) rotation Turn, the outer pipe bit of drilling tool starts rock cutting, keeps drilling state, and drilling fluid enters drilling rod by slush pump, is existed by metering Well head top residue run of steel calculates advanced drilling tool outer tube in the drilling depth of bottom hole, when drilling depth has been more than instrument connection Depth, that is, stop drilling, at this point, drill out an annulus column core in bottom hole, around annulus column core with hole wall rock It completely disengages, measures the strain displacement that instrument connection hole wall occurs by contact component (13),
6th step starts drilling machine, above mentions drilling rod, and drilling rod drives advanced drilling tool outer tube (15) to move upwards, works as core plugging notifying mechanism of rope core drilling Step (301) moves to sealing cover (72) position of contact type aperture strain gauge means, band dynamic sealing in the annular of outer tube (3) Lid (72) moves upwards, by contact type aperture strain gauge means from having pulled out out of instrument connection out, when contact type aperture strains Measuring device pulls away instrument connection, then keeps drilling rod motionless, and wire line coring fisher is connect with measurement spear-head (71), is led to Well head will be mentioned by crossing wire line coring fisher on the strain gauge means of contact type aperture, realize contact type aperture strain gauge means Recycling.
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