CN105372410B - Double-end sealing leak detection combined geometry - Google Patents

Double-end sealing leak detection combined geometry Download PDF

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Publication number
CN105372410B
CN105372410B CN201510903251.5A CN201510903251A CN105372410B CN 105372410 B CN105372410 B CN 105372410B CN 201510903251 A CN201510903251 A CN 201510903251A CN 105372410 B CN105372410 B CN 105372410B
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closure
pipe
water
piston
tubular configured
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CN105372410A (en
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刘伟韬
宋文成
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Shandong University of Science and Technology
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Shandong University of Science and Technology
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Abstract

The invention discloses a kind of double-end sealing leak detection combined geometry, belong to mine roof and floor rock mass damage scope determination techniques field.It includes plugging system, guidance system, supply propulsion system and pressure conversion system, plugging system includes communicating pipe, the first closure unit being located at communicating pipe two ends and the second closure unit, first closure unit is near the inner side of rock body drilled, closure unit includes leak pipe, the tubular configured joint being connected to leak pipe two ends and closure capsule, block unit and connected by tubular configured joint communicating pipe, closure capsule is arranged on the leak pipe periphery of two tubular configured joints, forms certain closure space between closure capsule and leak pipe.The present invention passes through the cooperation of plugging system and pressure conversion system, achieve and block water source in integrated process to observation water source pressure conversion, solve in observation process closure water source and observation water source work problem under respective pressure, it is to avoid the destruction to borehole fissure for the observation water source hypertonia.

Description

Double-end sealing leak detection combined geometry
Technical field
The present invention relates to mine roof and floor rock mass damage scope determination techniques field is and in particular to a kind of double-end sealing leak detection Combined geometry.
Background technology
The measurement of mine roof and floor rock mass damage scope is the important parameter of mark coal petrography occurrence status.Prevent in research mine When harnessing the river, it is a critical underlying parameter, therefore, research adopt conduit pipe in country rock formation it is therefore necessary to Grasp strata movement rule and determine roof and floor rock mass damage scope.Generally adopt numerical simulation, empirical equation estimated, live real The means such as survey.
However, because field condition is complicated, to a certain extent, numerical simulation can not reflect field condition, warp well Test formula be expected blindness larger, with adopting deep increasing, the empirical equation suitability is worse and worse.Due to existing scope In the number of tubes that simultaneously works excessive, especially in progradation, the interior conduit that easily occurs holing is wound around problem, in addition, During actual observation, closure pressure typically takes 2.5MPa, and boring observation hydraulic pressure typically takes 0.1MPa, observation water source pressure in boring Power can not be excessive, otherwise, can form dilating effect to preexisting crack in borehole wall.Under same external source, how to allow one In body scope, closure water source works under respective pressure with observing water source simultaneously, and prior art fails to solve above-mentioned simultaneously Two problems.
Content of the invention
It is an object of the invention to provide a kind of double-end sealing leak detection combined geometry, this observation system can be simultaneously Realize closure to leak hunting integration, decrease the number of tubes simultaneously working in boring, and can complete closure leak hunting integration and Blocking high-pressure water source is to the pressure conversion at observation low pressure water source.
Its technical solution includes:
A kind of closure for mine roof and floor rock mass is leaked hunting combined geometry, and it includes plugging system, guiding system System, supply propulsion system and pressure conversion system;
Described plugging system includes communicating pipe, the first closure unit being located at communicating pipe two ends and the second closure unit, institute State the first closure unit near the inner side of rock body drilled, described closure unit includes leak pipe, is connected to the pipe at leak pipe two ends Straight coupling and closure capsule, described closure unit and connecting by described tubular configured joint communicating pipe, the described capsule that blocks is arranged on The leak pipe periphery of two tubular configured joints, forms certain closure space between described closure capsule and leak pipe;
Described pressure conversion system includes hydraulic pressure transducer and draw-in groove pipe joint, and described hydraulic pressure transducer is connect by draw-in groove pipe Head is connected on the tubular configured joint of described first closure unit tail, and described hydraulic pressure transducer includes piston and matrix two parts, The area of described piston left side is more than the area of right side, is provided with, in described piston, the water-guiding hole being interconnected, positioned at the right side End water-guiding hole be connected with described draw-in groove pipe joint by aperture, positioned at the water-guiding hole of left end start when close by matrix inwall Envelope, is provided with boss in the right-hand member of piston, and described boss is spacing for carrying out to the spring in piston, and described piston is in order to control Left end water-guiding hole keeps connecting or closing with the boring in country rock;
Described guidance system includes guide cone, and described guide cone is connected with the tubular configured joint of described first closure unit header Connect;
Described supply propulsion system was connected with described communicating pipe, each for water filling in described communicating pipe, showing and recording Individual parameter.
The Advantageous Effects that technique scheme is directly brought are:
Piston is in the anisometric cylinder in left and right two ends, and the larger cylinder piston area area of left end is SOutward, contact hydraulic pressure For POutward, right-hand member less cylinder piston area area is SInterior, contact hydraulic pressure is PInterior.There is a boss setting near the right-hand member of piston, Coordinated it is ensured that matrix will not be departed from while piston moves in matrix with intrinsic silicon corresponding site by spring.In piston It is provided with the water-guiding hole being interconnected, is connected with draw-in groove pipe joint by aperture positioned at right-hand member water-guiding hole, positioned at left end water guide By matrix inner wall sealing when hole starts, when piston stretches out matrix to the left and is more than a certain position, left end water-guiding hole is connected with boring.
Hydraulic pressure transducer operation principle is:
The larger cylinder piston area area of left end is SOutward, contact hydraulic pressure is boring observation hydraulic pressure POutward, the less circle of right-hand member Cylinder piston area area is SInterior, contact hydraulic pressure is PInterior, coefficient of elasticity k in spring, decrement x, from balance between two forces principle:
Work as FOutward+FBullet≥FInterior, i.e. POutwardSOutward+kx≥PInteriorSInterior, then hydraulic pressure transducer be closed, piston is outer to be moved, water guide Hole is stopped by matrix inwall it is impossible to be connected with boring.
Work as FOutward+FBulletF≤FInterior, i.e. POutwardSOutward+kx≤PInteriorSInterior, then hydraulic pressure transducer be in opening, piston is moved out, water guide Matrix inwall is exposed in hole, connects with boring, carries out moisturizing in boring.
Said process both can achieve and (referred to bore laterally by interior survey (referring to block capsule) blocking high-pressure water (generally 2.5MPa) In the hole) observation low pressure water (0.1MPa) conversion, real-time moisturizing process in boring can be realized as needed again.
Wherein, POutwardFor observing hydraulic pressure, engineering often takes 0.1MPa, PInteriorFor playing swollen closure capsule hydraulic pressure, work in plugging system Journey often takes 2.5MPa, it follows that SOutwardWith SInteriorRatio be about 10~25:1 it is contemplated that area difference is too big, therefore adds spring It is adjusted, one is to reduce inside and outside area ratio, is easy to actual manufacture needs, two is to make the piston can self-return.
As a preferred version of the present invention, described tubular configured joint is provided with projection vertically upward and vertically downward Portion, described closure capsule is wrapped in the leak pipe periphery of two lobe.
As another preferred version of the present invention, away from the tubular configured joint positioned at leak pipe side for the lobe certain distance Upper setting is fluted, and described groove is by fixing described closure capsule with fixture cooperation.
Preferably, every section of leak pipe is laid with two leaking holes.
Preferably, described communicating pipe is to threaded with tubular configured joint.
Preferably, when piston meets POutwardSOutward+kx≤PInteriorSInteriorWhen, left end water-guiding hole is connected with the boring in country rock, wherein, POutward For observing hydraulic pressure, PInteriorFor playing swollen closure capsule hydraulic pressure, S in plugging systemOutwardFor left end piston area area, SInteriorFor right-hand member piston area Area, k is coefficient of elasticity in spring, and x is decrement.
Preferably, described PInteriorFor 2.5MPa.
Preferably, described supply propulsion system includes water flood operations platform, pressure of return water table, electronic logger, rig and brill Bar, described water flood operations platform provides high-pressure water into described communicating pipe, and described electronic logger is installed on water flood operations platform, institute State pressure of return water table for being corrected to the pressure of return water in return pipe detecting.
Preferably, the area of described piston left side and the area ratio of right side are 10~25:1.
Compared with prior art, the Advantageous Effects of this system are:
1st, the closure achieving observation system is leaked hunting integration, decreases the number of tubes simultaneously working in boring, solves In boring in progradation, multi-pipeline is mutually wound around problem.
2nd, pass through the cooperation of plugging system and pressure conversion system it is achieved that closure water source is to observation water in integrated process Source pressure conversion, solve in observation process closure water source and observation water source work problem under respective pressure, it is to avoid observation The too high destruction to borehole fissure of source pressure.
3rd, improve stability and the accuracy of mine roof and floor rock mass damage scope measurement process, it is to avoid observation water source The destruction to borehole fissure for the hypertonia, is stability and the accuracy of mine roof and floor rock mass damage scope measurement process Lay the foundation.
Brief description
Below in conjunction with the accompanying drawings the present invention is elaborated:
Fig. 1 is the structural representation of observation system of the present invention;
Fig. 2 is test probe overall schematic in observation system of the present invention;
Fig. 3 is the structural representation of the first closure unit in observation system of the present invention;
Fig. 4 is the structural representation of the second closure unit in observation system of the present invention;
Fig. 5, Fig. 6 are pressure conversion system structure diagram;
Fig. 7,8 be hydraulic pressure converter structure schematic diagram;
Fig. 9,10 be draw-in groove pipe joint structure schematic diagram of the present invention;
Figure 11 is hydraulic pressure switcher state schematic diagram in pressure conversion system of the present invention;
Figure 12 is guide cone structural representation in observation system of the present invention;
In figure, 1, rock mass, 2, boring, 3, closure capsule, 4, communicating pipe, 5, hydraulic pressure transducer, 6, tubular configured joint one, 7, leakage Water pipe, 8, draw-in groove pipe joint, 9, tubular configured joint three, 10, high-pressure hose, 11, drilling rod, 12, rig, 13, water flood operations platform, 14, Guide cone, 15, tubular configured joint two, 16, piston, 17, water-guiding hole, 18, spring, 19, boss, 20, matrix, 21, aperture.
Specific embodiment
The present invention proposes a kind of double-end sealing leak detection combined geometry, in order that advantages of the present invention, technical side Case is clearer, clear and definite, with reference to specific embodiment, the present invention is done with explanation clear, complete further.
The present invention, double-end sealing leak detection combined geometry, in conjunction with shown in Fig. 1 to Fig. 8, it includes plugging system, pressure Power converting system, guidance system and supply propulsion system, wherein, supply propulsion system is detailed as shown in Figure 1, including water flood operations platform 13rd, drilling rod 11, rig 12, wherein, water flood operations platform 13 is responsible for providing fixation pressure water source, by high-pressure hose 10, drilling rod 11 It is connected with combined geometry, rig 12 is responsible for propelling integrated observation system to corresponding observation area, water flood operations platform 13 include flow meter, pressure gauge, are respectively used to observe injection flow and water injection pressure, and propelling integrated observation system is responsible for by rig 12 Unite to corresponding observation area, the work operation method reference prior art for supply propulsion system and observation system can be real Existing.
Plugging system refers to shown in Fig. 1 to Fig. 4, including communicating pipe 4 and be located at communicating pipe 4 two ends first closure unit and Second closure unit, the first closure unit is located remotely from rock body drilled in the inner side near rock body drilled, the second closure unit Side, wherein, the second closure unit includes two tubular configured joints 1, leak pipe 7 and closure capsule 3, and the first closure unit includes Tubular configured joint 2 15, leak pipe 7, tubular configured joint 39 and closure capsule 3;Communicating pipe 4 is a sealing pipeline, and its left end passes through pipe Straight coupling 1 is threaded with the second closure unit, and it is in screw thread that its right-hand member passes through pressure conversion system with the first closure unit Connect.
Leak pipe 7 two ends in second closure unit are threaded with two tubular configured joints 1, on leak pipe 7 respectively Have two leaking holes, the outside setting convex architecture of tubular configured joint 1 and groove, wherein, convex architecture can for vertically upward and Lobe vertically downward, or the other lobe similar with this structure, the effect of lobe is to block closure capsule 3, in case Landing, the effect of groove is can be fixed thereon blocking capsule 3 by fixing component.Wherein, convex architecture is in order to block closure Capsule 3, with anti-slip, groove can be fixed thereon blocking capsule 3 by fixing component, and closure capsule 3 surrounds two tubuloses In the groove-like structure of joint 1, by having cooperatively formed the space of swollen closure capsule 3 with leak pipe 7.
In first closure unit, leak pipe 7 about two ends are connected in screw thread with tubular configured joint 2 15, tubular configured joint 39 respectively Connect, tubular configured joint 25, the outside setting groove-like structure of tubular configured joint 39, can be by fixing component fixing closure capsule 3, closure Capsule 3 surrounds tubular configured joint 2 15, tubular configured joint 39 outside arranges in groove-like structure, by cooperatively forming with leak pipe 7 Play the space of swollen closure capsule 3.
Only one, communicating pipe 4, pass through tubular configured joint 1, draw-in groove pipe joint 8 and the first closure unit and the second envelope respectively Stifled unit is threaded.
Pressure conversion system refers to shown in Fig. 5 to Figure 11, including hydraulic pressure transducer 5 and draw-in groove pipe joint 8;Draw-in groove pipe joint 8 left ends were threadeded with communicating pipe 4, and right-hand member is threadeded with tubular configured joint 2 15, draw-in groove pipe joint 8 left side exterior lateral area with 4 hydraulic pressure transducers 5 are threaded.
Hydraulic pressure transducer 5 includes piston 16 and matrix 20 two parts, and piston 16 is in the anisometric cylinder in left and right two ends, left Larger cylinder piston 16 face area is held to be SOutward, contact hydraulic pressure is POutward, right-hand member less cylinder piston 16 face area is SInterior, Contact hydraulic pressure is PInterior.Right-hand member near piston 16 has a boss 19 to arrange, and by spring 18, internal corresponding site is joined with matrix 20 Close it is ensured that matrix 20 will not be departed from while piston 16 moves in matrix 20, in piston 16, be provided with the water guide being interconnected Hole 17, right-hand member water-guiding hole 17 is connected with draw-in groove pipe joint 8 by aperture 21, by matrix 20 inwall when left end water-guiding hole 17 starts Sealing, when piston 16 stretches out matrix to the left and is more than a certain position, left end water-guiding hole 17 is connected with boring 2.
Above-mentioned hydraulic pressure transducer 5 operation principle is:
The larger cylinder piston of left end 16 face area is SOutward, contact hydraulic pressure is boring 2 observation hydraulic pressure POutward, right-hand member is less Cylinder piston 16 face area is SInterior, contact hydraulic pressure is II type closure end section closure hydraulic pressure PInterior, coefficient of elasticity k in spring 18, pressure Contracting amount x, from balance between two forces principle:
Work as FOutward+FBullet≥FInterior, i.e. POutwardSOutward+kx≥PInteriorSInterior, then hydraulic pressure transducer 5 be closed, piston 16 is outer to be moved, and leads Water hole 17 is stopped it is impossible to be connected with boring 2 by matrix 20 inwall.
Work as FOutward+FBulletF≤FInterior, i.e. POutwardSOutward+kx≤PInteriorSInterior, then hydraulic pressure transducer 5 be in opening, piston 16 is moved out, Water-guiding hole 17 exposes matrix 20 inwall, connects with boring 2, carries out moisturizing in boring 2.
Said process both can achieve and (referred to laterally by interior survey (referring to block capsule 3) blocking high-pressure water (generally 2.5MPa) In boring 2) observation low pressure water (0.1MPa) conversion, moisturizing process in real time of again can realizing as needed holing in 2.
Wherein, POutwardFor observing hydraulic pressure, engineering often takes 0.1MPa, PInteriorFor playing swollen closure capsule 3 hydraulic pressure, work in plugging system Journey often takes 2.5MPa, it follows that SOutwardWith SInteriorRatio be about 25:1 it is contemplated that area difference is too big, therefore adds spring 18 to enter Row is adjusted, and one is to reduce inside and outside area ratio, is easy to actual manufacture needs, and two is to make the piston 16 can self-return.
Guidance system refers to shown in Fig. 1 and Figure 12, including guide cone 14, is threaded with tubular configured joint 39, guide cone 14 is a conical structure, is easy to hole in 2 when uneven step-like, plays guide effect.
Below the observation procedure of double-end sealing leak detection combined geometry of the present invention is elaborated, key step bag Include:
(1) drilling 2:Successively constructed in top board or floor rock 1 in coal petrography tunnel with conventional coal mine drilling machine 12 Predetermined angular is holed 2, and hole depth reaches 30-70m;
(2) observation system is installed:Debris in cleaning boring 2, install observation system, by high-pressure hose in boring 2 10 corresponding pipeline connect rig 12, water flood operations platform 13 etc., and are sent to boring 2 initial bit using rig 12 and drilling rod 11 Put;
(3) close boring 2:Reach after initial position after it, play swollen closure capsule 3 sealing boring 2, that is, use water flood operations platform The water source injecting fixation pressure in 13 to first index unit and the second closure unit reaches predetermined hydraulic pressure to it;
(4) flowing water vector parameters are measured:After closure is qualified, carry out flowing water vector parameters mensure, that is, after stable water pressure, wait 1-2 minute, reads the total flow in this time, flow value in record unit of account time, withdraws pressure water source, make closure Capsule 3 is in depressurization phase, then utilizes rig 12 and drilling rod 11 mobile observation system to observe hole section, repeat step 3 to next To step 4, successively boring 2 is measured.
The part do not addressed in the present invention using or use for reference prior art can achieve.
Although more herein employ the terms such as hydraulic pressure transducer, draw-in groove pipe joint, it is not precluded from using The probability of other terms, the simple replacement that those skilled in the art are done to these terms under the enlightenment of the present invention, all should Within protection scope of the present invention.

Claims (8)

1. a kind of closure for mine roof and floor rock mass leak hunting combined geometry it is characterised in that:It includes closure system System, guidance system, supply propulsion system and pressure conversion system;
Described plugging system includes communicating pipe, the first closure unit being located at communicating pipe two ends and the second closure unit, and described the One closure unit all includes leak pipe, is connected near the inner side of rock body drilled, described first closure unit, the second closure unit The tubular configured joint at leak pipe two ends and closure capsule, described first closure unit and communicating pipe, the second closure unit and communicating pipe Between connected by described tubular configured joint, described closure capsule be arranged on two tubular configured joints leak pipe periphery, described closure Form certain closure space between capsule and leak pipe;
Described pressure conversion system includes hydraulic pressure transducer and draw-in groove pipe joint, and described hydraulic pressure transducer passes through draw-in groove pipe joint even It is connected on the tubular configured joint of described first closure unit tail, described hydraulic pressure transducer includes piston and matrix two parts, described The area of piston left side is more than the area of right side, is provided with, in described piston, the water-guiding hole being interconnected, positioned at right-hand member Water-guiding hole is connected with described draw-in groove pipe joint by aperture, positioned at the water-guiding hole of left end start when by matrix inner wall sealing, The right-hand member of piston is provided with boss, and described boss is spacing for carrying out to the spring in piston, and described piston is in order to control left end Water-guiding hole keeps connecting or closing with the boring in country rock;
Described guidance system includes guide cone, and described guide cone is connected with the tubular configured joint of the described first closure unit header;
Described supply propulsion system was connected with described communicating pipe, for water filling in described communicating pipe, showing and recording each ginseng Number;
Two leaking holes are laid with every section of leak pipe.
2. the closure for mine roof and floor rock mass according to claim 1 is leaked hunting combined geometry, and its feature exists In:Lobe vertically upward and vertically downward is provided with described tubular configured joint, described closure capsule is wrapped in two projections The leak pipe periphery in portion.
3. the closure for mine roof and floor rock mass according to claim 2 is leaked hunting combined geometry, and its feature exists In:Arrange fluted on the tubular configured joint of leak pipe side away from lobe certain distance, described groove by with fixation Described closure capsule is fixed by part cooperation.
4. the closure for mine roof and floor rock mass according to claim 1 is leaked hunting combined geometry, and its feature exists In:Described communicating pipe is to threaded with tubular configured joint.
5. the closure for mine roof and floor rock mass according to claim 1 is leaked hunting combined geometry, and its feature exists In:When piston meets POutwardSOutward+kx≤PInteriorSInteriorWhen, left end water-guiding hole is connected with the boring in country rock, wherein, POutwardFor observing hydraulic pressure, PInteriorFor playing swollen closure capsule hydraulic pressure, S in plugging systemOutwardFor left end piston area area, SInteriorFor right-hand member piston area area, k is bullet Coefficient of elasticity in spring, x is decrement.
6. the closure for mine roof and floor rock mass according to claim 5 is leaked hunting combined geometry, and its feature exists In:Described PInteriorFor 2.5MPa.
7. the closure for mine roof and floor rock mass according to claim 1 is leaked hunting combined geometry, and its feature exists In:Described supply propulsion system includes water flood operations platform, pressure of return water table, electronic logger, rig and drilling rod, described water filling behaviour Station provides high-pressure water into described communicating pipe, and described electronic logger is installed on water flood operations platform, described pressure of return water table For being corrected to the pressure of return water in return pipe detecting.
8. the closure for mine roof and floor rock mass according to claim 1 is leaked hunting combined geometry, and its feature exists In:The area of described piston left side and the area ratio of right side are 10~25:1.
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