CN105525910B - Multistage blocks both-end observation procedure - Google Patents
Multistage blocks both-end observation procedure Download PDFInfo
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- CN105525910B CN105525910B CN201510903125.XA CN201510903125A CN105525910B CN 105525910 B CN105525910 B CN 105525910B CN 201510903125 A CN201510903125 A CN 201510903125A CN 105525910 B CN105525910 B CN 105525910B
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000000523 sample Substances 0.000 claims abstract description 147
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 95
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 238000005553 drilling Methods 0.000 claims description 57
- 239000002775 capsule Substances 0.000 claims description 25
- 239000011435 rock Substances 0.000 claims description 21
- 239000011159 matrix material Substances 0.000 claims description 15
- 239000003245 coal Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000013589 supplement Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 13
- 230000003020 moisturizing effect Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- 206010020852 Hypertonia Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000916 dilatatory effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a kind of multistage to block both-end observation procedure, its used observation system includes detection system, plugging system and supply propulsion system, detection system includes the first probe unit, second probe unit, 3rd probe unit and the 4th probe unit, card slot connector is provided between adjacent probe unit, each probe unit includes communicating pipe and the leak pipe of parallel arrangement, the communicating pipe of adjacent probe unit is connected with leak pipe by the card slot connector, wherein, the communicating pipe of adjacent detector unit keeps connection, positioned at the first probe unit and the second probe unit, the leak pipe of 3rd probe unit and the 4th probe unit keeps connection, leak pipe between the second probe unit and the 3rd probe unit is divided into independent two parts by card slot connector, respectively detect I sections and II sections of detection.Observation procedure of the present invention can detect water filling in sections to two at the same time, add measurement end, improve measurement efficiency.
Description
Technical field
The invention belongs to mine roof and floor rock mass damage scope determination techniques field, and in particular to multistage closure both-end observation
Method.
Background technology
The measurement of mine roof and floor rock mass damage scope is to indicate the important parameter of coal petrography occurrence status.Prevent in research mine
When harnessing the river, it is a critical underlying parameter, and therefore, the formation of conduit pipe in country rock is adopted in research, it is therefore necessary to
Grasp strata movement rule and definite roof and floor rock mass damage scope.Generally use numerical simulation, empirical equation are estimated, scene is real
The means such as survey.However, since field condition is complicated, to a certain extent, numerical simulation cannot reflect field condition well, warp
Test that the estimated blindness of formula is larger, and with deep increasing is adopted, empirical equation applicability is worse and worse.
First, as mining depth increases, drilling be easily deformed in a short time, it is necessary to drilling quickly measured,
And drillable length is substantially in 50-70m, test site often uses single hop water filling visualizer, promotes measurement length (about 1m) every time,
This adds increased promote number and observation time.Secondly, fail to realize closure observation integration in existing multistage scope, and
When multistage is observed, an only measurement end, observed efficiency increase is less.Finally, during actual observation, closure pressure is general
2.5MPa is taken, drilling observation hydraulic pressure generally takes 0.1MPa, and drilling interior observation source pressure can not be excessive, otherwise, can be to drilling hole
Preexisting crack forms dilating effect in wall.Under same external source, how to allow in integrated scope and block water source with seeing
Water source is surveyed to work at the same time under respective pressure.
The prior art fails to solve the problems, such as above three at the same time.
The content of the invention
It is an object of the invention to provide a kind of multistage to block both-end observation procedure, which can be at the same time to two
Water filling in section is detected, measurement end is added, improves measurement efficiency.
Its technical solution includes：
A kind of closure both-end observation procedure for wall-rock crack, its used observation system include detection system, envelope
Stifled system and supply propulsion system, the detection system are installed in the drilling of wall-rock crack,
The detection system include the first probe unit, the second probe unit, the 3rd probe unit, the 4th probe unit,
Pressure-regulating valve, card slot connector and U-tube road, first probe unit is positioned at the outermost of drilling, the 4th detection list
Member positioned at the most inner side of drilling, the card slot connector is arranged between adjacent probe unit, the front portion of the first probe unit and
The afterbody of 4th probe unit, each probe unit includes communicating pipe and the leak pipe of parallel arrangement, in each card slot connector
Inside it has been provided with swollen hole；
Hydraulic pressure converting system is provided with the card slot connector of the 4th probe unit afterbody, the hydraulic pressure converting system includes
Hydraulic pressure converter and card slot pipe fitting, the hydraulic pressure converter include piston and matrix two parts, piston left side area
More than right side area, interconnected water-guiding hole is provided with the piston, the water-guiding hole positioned at right end passes through aperture and institute
State card slot connector to be connected, by matrix inner wall sealing when starting positioned at the water-guiding hole of left end, the right end of piston be provided with boss,
The boss is used to carry out the spring one in piston spacing, and the piston is controlling in left end water-guiding hole and wall-rock crack
Drilling keeps connection or closes；
The plugging system includes closure capsule, and the closure capsule surrounds the outside of each card slot connector, the card
Swollen hole has been provided with trough connection；
The supply propulsion system includes water flood operations platform one, water flood operations platform two and oil gear, single in each detection
Oil pipe road is both provided with above first leak pipe, the oil gear includes oil pressure tank, accumulator and shut-off valve；
The observation procedure comprises the following steps：
A drillings, the multiple drillings for predetermined angular of successively constructing into top plate or floor rock in coal petrography tunnel, hole depth
30-70m；
B installs observation system, successively by the first probe unit, the second probe unit, the 3rd probe unit and the 4th detection
The communicating pipe of unit and leak pipe are linked together by card slot connector so that and the communicating pipe of adjacent detector unit keeps connection,
Keep connecting positioned at the leak pipe of the first probe unit and the second probe unit, the 3rd probe unit and the 4th probe unit, position
Leak pipe between the second probe unit and the 3rd probe unit is divided into independent two parts by card slot connector, respectively visits
Survey I sections and II sections of detection；
Card slot between the first probe unit and the second probe unit, between the 3rd probe unit and the 4th probe unit
Installation pressure-regulating valve in connector, the 4th probe unit stretch into one end connection U-tube road of drilling, hydraulic pressure converting system are installed
On the card slot connector of the 4th probe unit afterbody；
Closure capsule is surrounded to the outside of each card slot connector, water flood operations platform one is connected for I sections with detection, water filling behaviour
Make platform two to be connected with communicating pipe, oil pipe road is connected with oil gear；
C closing drillings, after it reaches initial position, with water flood operations platform one and water flood operations platform two into observation system
Injection water source reaches predetermined initial water pressure to play swollen closure capsule to it；
D measures flowing water vector parameters, including following sub-step：
(1) setting hydraulic pressure converter Opening pressure is 2.5 than m, takes observation hydraulic pressure PIt is leftFor 0.1MPa；
(2) 2.5MPa water sources are injected into communicating pipe by water flood operations platform two, on the one hand plays swollen closure by playing swollen hole
Capsule, on the other hand, the water source after the conversion of hydraulic pressure converter by, with 0.1MPa water fillings into the 4th probe unit, observing；Protect
After water holding is pressed 1-2 minutes, read and calculate average wastage L in time period1；At the same time, by water flood operations platform one to
0.1MPa observations water source is directly provided in the first probe unit, it is corresponding to read and calculate average wastage L in time period2；
(3) step (2) is connect, the high pressure oil of certain pressure is provided by oil gear into pressure-regulating valve, makes piston group
Square hole is connected to other end movement, at this time, the first probe unit is connected with the second probe unit, the 4th probe unit and the
Three probe units connect, and open shut-off valve and accumulator, keep high pressure oil pressure, make observation water source single to the second detection respectively
Member, supplement in the 3rd probe unit, and worked on 0.1MPa pressure, wait 1-2 minutes, read respectively and calculate first,
The average wastage L of two probe units and third and fourth probe unit3, L4, at this time, L3- L2As the second probe unit is averaged
Wastage, L4- L1The as average wastage of the 3rd probe unit；
E withdraws pressure water source and high pressure oil, closure capsule and pressure-regulating valve is in depressurization phase, then utilizes supply
To next observation area, repeat step c, d, successively measures drilling propulsion system mobile observation system.
The operation principle of above-mentioned hydraulic pressure converter is：
The larger cylinder piston area area of left end is S in hydraulic pressure converterIt is left, contact hydraulic pressure is the 4th probe unit leak
Boring hydraulic pressure P is observed in pipeIt is left, the less cylinder piston area area of right end is SIt is right, contact hydraulic pressure is the 4th probe unit company
Hydraulic pressure P in siphunculusIt is right, coefficient of elasticity k, decrement x in spring one, from balance between two forces principle：
Work as FIt is left+FBullet≥FIt is right, i.e. PIt is leftSIt is left+kx≥PIt is rightSIt is right, then hydraulic pressure converter be closed, piston is not outer to be moved, water guide
Hole is stopped by matrix inner wall, it is impossible to is connected with leak pipe.
Work as FIt is left+FBullet≤FIt is right, i.e. PIt is leftSIt is left+kx≤PIt is rightSIt is right, then hydraulic pressure converter be in opening, piston is moved out, water guide
Matrix inner wall is exposed in hole, is connected with leak pipe, to carrying out moisturizing in drilling.
Communicating pipe, mesohigh water was into the 4th probe unit leak pipe during the above process can be both realized from the 4th probe unit
Boring low pressure water conversion is observed, and can realize the real-time moisturizing process into drilling as needed.
Wherein, PIt is leftTo observe boring hydraulic pressure, engineering often takes 0.1MPa, PIt is rightTo connect inner pipe water pressure, on the one hand can be used for
Swollen closure capsule is played, on the other hand after pressure converts, available for the real-time moisturizing into the survey section leak pipe, engineering is often greater than
2.5MPa, it follows that SIt is leftRatio with the S right sides is about 25:1, add spring and adjust area difference, first, left and right face can be reduced
Product ratio, needs easy to actual manufacture, second, can make piston self-return.
As the preferred solution of the present invention, two parallel passages are additionally provided with the card slot connector, are respectively
Passage I and passage II, the passage I link together the leak pipe of adjacent detector unit, and the passage II is by adjacent detector
The communicating pipe of unit links together, and block is provided with the passage I between the second probe unit and the 3rd probe unit,
The block separates the second probe unit and the 3rd probe unit；Oil pipe road interface is provided with above the passage I, it is described
Oil pipe road interface is connected on the oil pipe road, and described swollen hole is arranged on below the passage II.
As the present invention another preferred solution, between the passage I and leak pipe, passage II and between communicating pipe
To be threadedly coupled.
Preferably, the pressure-regulating valve includes asymmetric piston group, spring two, the oil-through-hole positioned at top and positioned at side
The square hole in portion, the oil-through-hole are connected with the oil pipe road.
Preferably, the supply propulsion system further includes pressure of return water table, electronic logger, drilling machine and drilling rod, the electricity
Subrecord device is installed on water flood operations platform, and the pressure of return water table is used to be corrected inspection to the pressure of return water in return pipe
Survey.
Preferably, the oil pipe road is fixed on each card slot connector by fastening screw.
Advantageous effects caused by the present invention：
Observation procedure of the present invention synchronous at the same time can measure both ends enemy, be grasped by water flood operations platform one and water filling
Make platform two to II section of detection system water filling at the same time, I section of independent detection and detection, realize and block the both ends enemy of survey section together
Pacing amount, adds measurement end, improves measurement efficiency, is particularly suitable for the quick survey of mine roof and floor rock mass damage scope
Amount.
Bulging is played by blocking capsule realizes closure and leaks hunting integration into closure space, the system.
The water source that water flood operations platform two provides enters in hydraulic pressure converter through communicating pipe, and piston in hydraulic pressure converter can be with
Control left end water-guiding hole keeps connecting or closing with the drilling in wall-rock crack, it is achieved thereby that blocking high-pressure in integrated process
Water source ensures that water source is blocked in observation process to work with observation water source under respective pressure to the pressure conversion at observation low pressure water source
Problem, avoids destruction of the observation water source hypertonia to borehole fissure.
Brief description of the drawings
The present invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is the structure diagram of observation system of the present invention；
Fig. 2 is the overall schematic of test probe in observation system of the present invention；
Fig. 3-1,3-2,3-3 are pressure-regulating valve structure diagram of the present invention；
Fig. 4-1,4-2 are hydraulic pressure converter structure schematic diagram；
Fig. 5-1,5-2,5-3,5-4 are hydraulic pressure converter and card slot pipe joint structure schematic diagram；
Fig. 6 is hydraulic pressure switcher state schematic diagram；
Fig. 7 blocks oil pipe line structure schematic diagram in both-end observation system for multistage；
Fig. 8 is leak pipe structure diagram；
Fig. 9 is communicating tube structure schematic diagram；
Figure 10 is one structure diagram of card slot connector；
Figure 11 is two structure diagram of card slot connector；
Figure 12 is three structure diagram of card slot connector；
Figure 13 is four structure diagram of card slot connector；
Figure 14 is five structure diagram of card slot connector；
In figure, 1, rock mass, 2, drilling, 3, card slot connector one, the 301, first probe unit, the 302, second probe unit,
303rd, the 3rd probe unit, the 304, the 4th probe unit, 4, card slot connector two, 5, card slot connector three, 6, card slot connector four, 7, card
Trough connection five, 8, hydraulic pressure converting system, 9, pressure-regulating valve, 10, closure capsule, 11, leak pipe, 12, communicating pipe, 13, logical oil
Pipeline, 14, card slot pipe fitting, 15, hydraulic pressure converter, 16, aperture, 17, piston, 18, matrix, 19, spring one, 20, boss,
21st, limbers, 22, piston group, 23, square hole, 24, spring two, 25, oil-through-hole, 26, fastening screw, 27, leakage hole, 28, note
Water operation console one, 29, water flood operations platform two, 30, drilling machine, 31, drilling rod, 32, accumulator, 33, shut-off valve, 34, oil pressure tank, 35,
Oil pipe road interface, 36, rise swollen hole.
Embodiment
Elaborate with reference to specific embodiment to the present invention.
The present invention, observation system is as shown in Figure 1, including observation system, envelope used by multistage blocks both-end observation procedure
Stifled system and supply propulsion system, observation system are observed for multistage, and as shown in Figure 2, observation system is mainly by the first probe unit
301st, the second probe unit 302, the 3rd probe unit 303 and the 4th probe unit 304 form, wherein, each probe unit is equal
Include leak pipe 11, communicating pipe 12, the head of the 4th probe unit 304 sets card slot connector 1, the 4th probe unit 304
It is connected between the 3rd probe unit 303 by card slot connector 24, between the 3rd probe unit 303 and the second probe unit 302
Connected by card slot connector 35, connected between the second probe unit 302 and the first probe unit 301 by card slot connector 46,
In the other end of the first probe unit 301, card slot connector 57 is set.
With reference to shown in Fig. 2, Fig. 8 and Fig. 9, multiple leakage holes 27 are provided with leak pipe 11, for 2 leaks that drill, seeing
Gaging hole wall fracture water flow, the first end of communicating pipe 12 are connected by card slot connector five with water flood operations platform 2 29, adjacent closure unit
Leak pipe connected with communicating pipe by card slot connector.
Structure chart as in Figure 10-14, being respectively five card slot connectors of the invention, card slot connector 1 is positioned at the 4th detection
, there are two central symmetry pipelines on the right side of unit 304, side is in respectively screw thread with leak pipe 11, hydraulic pressure conversion valve 8, communicating pipe 12
Connection, is provided with swollen hole 36 together in card slot connector 1 below communicating pipe 12 side.
Card slot connector 24 has two central symmetry pipes between the 3rd probe unit 303 and the 4th probe unit 304
Road, is threaded with leak pipe 11, pressure-regulating valve 9, communicating pipe 12 respectively, and 11 side of leak pipe is upper in card slot connector 24
Side is fixed with square oil pipe road interface 35, is communicated with the oil-through-hole 25 on pressure-regulating valve 9, the other end and card slot connector two
4 side wall is connected, and oil pipe road interface 35 is threaded with oil pipe road 13, interior logical high pressure oil, is connected in card slot connector 24
Swollen hole 36 together is provided with below 12 side of pipe, oil pipe road is fixed on each card slot connector by fastening screw 26.
As shown in Fig. 4-1,4-2, card slot connector 35 has between the second probe unit 302, the 3rd probe unit 303
Two central symmetry pipelines, are threaded with leak pipe 11, communicating pipe 12 respectively, in card slot connector 35 with 11 phase of leak pipe
Center section even does not connect, and is entity blockage structure, can be divided into and detect I sections and II sections of detection, leak pipe in card slot connector 35
An oil pipe road interface 35 is fixed with above 11 sides, 35 both ends of oil pipe road interface and the side wall of card slot connector 35 are connected, and lead to
Oil pipe line interface 35 is threaded with oil pipe road 13, interior logical high pressure oil, is opened in card slot connector 35 below communicating pipe 35 side
There is swollen hole 36 together.
Card slot connector 46 has two central symmetry pipes between the first probe unit 301, the second probe unit 302
Road, is threaded with leak pipe 11, pressure-regulating valve 9, communicating pipe 12 respectively, and 11 side of leak pipe is upper in card slot connector 46
Side is fixed with " T-shaped " oil pipe road, is communicated with the oil-through-hole 25 on pressure-regulating valve 9, oil pipe road both ends connect with card slot
First 46 side wall is connected, and oil pipe road interface is threaded with oil pipe road, interior logical high pressure oil, is connected in card slot connector 46
Swollen hole 36 together is provided with below 12 side of pipe.
Card slot connector 57 is located at the left end of the first probe unit 301, there is two central symmetry pipelines, respectively with leak pipe
11st, communicating pipe 12 is threaded, and has an oil pipe road interface and card slot connector in card slot connector 57 above 11 side of leak pipe
57 side wall is connected, and oil pipe road interface is threaded with oil pipe road, interior logical high pressure oil, communicating pipe in card slot connector 57
Swollen hole 36 together is provided with below 12 sides.
Hydraulic pressure converting system 8 includes hydraulic pressure converter 15 and card slot pipe fitting 14, which is located at card slot connector
In one 3, and it is threaded by card slot pipe fitting 14 and card slot connector 1.With reference to Fig. 3-1,3-2,3-3,4-1,4-2 institute
Show, hydraulic pressure converter 15 divides piston 17 and matrix 18 two parts, and piston 17 is in the anisometric cylinder in left and right ends, and left end is larger
17 face area of cylinder piston be SIt is left, contact hydraulic pressure is PIt is left, the less 17 face area of cylinder piston of right end is SIt is right, contact water
Press as PIt is right.Right end close to piston 17 has a boss 20 to set, and is coordinated by spring 1 and 18 inside corresponding site of matrix, protected
Card piston 17 will not depart from matrix 18 while movement in matrix 18.
Interconnected limbers 21 is provided with piston 17, right end limbers 21 passes through aperture 16 and card slot pipe fitting 14
It is connected, by 18 inner wall sealing of matrix when left end limbers 21 starts.It is more than a certain position when piston 17 stretches out matrix 18 to the left
When, left end limbers 21 is connected with drilling 2.
Opening pressure ratio designed by hydraulic pressure converter 15 is m, works as PIt is left/PIt is rightDuring≤m, hydraulic pressure converter 15, which is in, closes shape
State, works as PIt is left/PIt is rightDuring >=m, hydraulic pressure converter 15 is in opening.
The less 17 face area of cylinder piston of right end is S in piston 17It is rightThe cylinder piston 17 face face larger with left end
Product is SIt is leftArea compare SIt is right/SIt is leftIt can be designed according to the Opening pressure designed by hydraulic pressure converter 15 than m.
15 operation principle of hydraulic pressure converter is：
As shown in fig. 6, the larger 17 face area of cylinder piston of left end is S in hydraulic pressure converter 15It is left, contact hydraulic pressure is the
The hydraulic pressure P of observation drilling 2 in four probe units, 304 leak pipe 11It is left, the less 17 face area of cylinder piston of right end is SIt is right, connect
It is hydraulic pressure P in 304 communicating pipe 12 of the 4th probe unit to touch hydraulic pressureIt is right, coefficient of elasticity k in spring 1, decrement x, is put down by two power
The principle that weighs is understood：
Work as FIt is left+FBullet≥FIt is right, i.e. PIt is leftSIt is left+kx≥PIt is rightSIt is right, then hydraulic pressure converter 15 be closed, piston 17 is not outer to be moved,
Limbers 21 is stopped by 18 inner wall of matrix, it is impossible to is connected with leak pipe 11.
Work as FIt is left+FBullet≤FIt is right, i.e. PIt is leftSIt is left+kx≤PIt is rightSIt is right, then hydraulic pressure converter 15 be in opening, piston 17 is moved out,
18 inner wall of matrix is exposed in limbers 21, is connected with leak pipe 11, to carrying out moisturizing in drilling 2.
Communicating pipe, 12 mesohigh water was to the 4th probe unit 304 during the above process can be both realized from the 4th probe unit 304
Observation drilling 2 is converted with low pressure water in leak pipe 11, and can realize the process of moisturizing in real time into drilling 2 as needed.
Wherein, PIt is leftHydraulic pressure is used for observation drilling 2, engineering often takes 0.1MPa, PIt is rightIt is on the one hand available for 12 hydraulic pressure in communicating pipe
Swollen closure capsule 10, normal available for the real-time moisturizing into the survey section leak pipe 11, engineering on the other hand after pressure converts in
More than 2.5MPa, it follows that SIt is leftRatio with the S right sides is about 25:1, it is contemplated that area difference is too big, therefore add spring 1 into
Row is adjusted, first, left and right area ratio can be reduced, is needed easy to actual manufacture, second, can make 17 self-return of piston.
With reference to shown in Fig. 5-1 to 5-4, pressure-regulating valve 9 is located at card slot connector 24, in card slot connector 46, and pressure is adjusted
9 weeks ends of valve are threaded, and are connected by screw thread with card slot connector 24, card slot connector 46,9 two side ends of force regulating valve are provided with symmetrically
Square hole 23 it is several, a screw-type oil-through-hole 25 is provided with Zhou Duan.
The pressure-regulating valve 9 includes asymmetric piston group 22 and spring 2 24, and during original state, spring 2 24 acts on
Under, asymmetric piston group 22 is located at one end of 9 inner cavity of pressure-regulating valve, blocks 9 side side of pressure-regulating valve completely just at this time
Shape hole 23, during working status, high pressure oil enters 9 inner cavity of pressure-regulating valve by oil-through-hole 25, acts on 22 side of piston group, will
Piston group 22 pushes 2 24 end of spring to, and at this time, 22 gaps of piston group are by chance connected with square hole 23, and current can pass through pressure tune
Save valve 9.
Plugging system is referred to shown in Fig. 1 to Fig. 2, Fig. 6 to Figure 14, main to include closure capsule 10, and closure capsule 10 is distinguished
Surround on card slot connector 1, card slot connector 24, card slot connector 35, card slot connector 46 and card slot connector 57, pass through fixation
Component is sealed against fixing, and is linked up by a swollen hole 36 and external source, and oil pipe road both ends set fastening screw 26, will can lead to
Oil pipe line is fixed on the oil pipe between each card slot connector, and oil pipe road is connected with oil gear, is connected with high pressure oil inside it.
Oil gear includes oil pressure tank 34, shut-off valve 33 and accumulator 32, and oil pressure tank 34, which is responsible for offer, makes pressure-regulating valve 9
The high pressure oil that middle piston group 22 moves, shut-off valve 33 are responsible for the circulation and cut-off of high pressure oil, accumulator 32 by with shut-off valve 33
Coordinate, ensure that shut-off valve 33 is in when state, ensure that the high pressure oil in oil pipe 35 and capsule connecting tube 13 keeps certain
Pressure state.
Supply propulsion system in detail as shown in Figure 1, including water flood operations platform 1, water flood operations platform 2 29, drilling rod 31, drilling machine
30th, pressure of return water table and electronic logger etc., water flood operations platform 1 are responsible for the first probe unit 301, the second probe unit
302 provide pressure water source, source pressure 0.1MPa, and water flood operations platform 2 29 is responsible for detecting to the 3rd probe unit the 303, the 4th
Unit 304, closure capsule 10 provide pressure water source, pressure water source 2.5MPa, on the one hand, after the conversion of pressure changeover valve 9,
Supplied water with the hydraulic pressure of 0.1MPa to the 3rd probe unit 303, the 4th probe unit 304, on the other hand, with the pressure water of 2.5MPa
Swollen closure capsule 10 is played by playing swollen hole 36 in source.
The course of work of observation system of the present invention is：
Step 1, set 15 Opening pressure of hydraulic pressure converter in card slot connector 1 than being respectively m=2.5, to take observation hydraulic pressure
PIt is leftFor 0.1MPa；
Step 2, water flood operations platform 2 29 provide 2.5MPa high pressure waters by communicating pipe 12, on the one hand, this high pressure water passes through
Play swollen hole 36 and play swollen closure capsule 10, on the other hand, this high pressure water changed by hydraulic pressure converter 15 after with 0.1MPa to the 4th
Water filling in probe unit 304, observation；Hydraulic pressure is kept, after 1-2 minutes, reads and calculates average wastage L in time period1, with
This is corresponded to, water flood operations platform 1, and 0.1MPa observations water source is directly provided into the first probe unit 301, corresponding to read and count
Calculate average wastage L in time period2；
After step 3, the above process, oil pressure tank 34 provides certain pressure by associated conduit into pressure-regulating valve 9
High pressure oil, piston group 22 is moved to the other end, square hole 23 connects.At this time, the first probe unit 301 and the second detection are single
Member 302 connects, and the 4th probe unit 304 is connected with the 3rd probe unit 303, opens shut-off valve 33 and accumulator 32, keeps high
Oil pressure, makes observation water source be supplemented respectively into the second probe unit 302, the 3rd probe unit 301, and with 0.1MPa pressure
Work on, wait 1-2 minutes, read respectively and calculate first and second probe unit 301,302 and third and fourth probe unit
303rd, 304 average wastage L3, L4, at this time, L3- L2As the second probe unit 302 is averaged wastage, L4- L1As the 3rd
Probe unit equals 303 equal wastages；
Step 4, by pressure-regulating valve 9 and closure 10 pressure release of capsule, observation system is pushed into down with drilling machine 30 and drilling rod 31
One observation area is observed, until all observation finishes in 2 length of drilling.
The observation procedure of observation system of the present invention, specifically includes following steps：
(1) drilling 2：Successively constructed into top plate or floor rock 1 in coal petrography tunnel with conventional coal mine drilling machine 30
Predetermined angular drilling 2 is several, and hole depth 30-70m is differed；
(2) observation system is installed：Cleaning drilling in debris, install observation system, by corresponding pipeline connect drilling machine 30,
Water flood operations platform 1, water flood operations platform 2 29 etc., and it is sent to 2 initial positions of drilling using drilling machine 30 and drilling rod 31；
(3) closing drilling 2：After it reaches initial position, swollen closure capsule 10 sealing drilling 2 is played, that is, uses water flood operations
Platform 28,29 injects water source into observation system and reaches predetermined initial water pressure to it；
(4) flowing water vector parameters are measured：After closure is qualified, flowing water vector parameters measure is carried out, reads respectively and calculates the
One probe unit 301, the second probe unit 302, the 3rd probe unit 303, the average wastage L of the 4th probe unit 3042,
L3- L2, L4- L1, L1.Pressure water source and high pressure oil are withdrawn, closure capsule 10 and pressure-regulating valve 9 is in depressurization phase, so
Afterwards using drilling machine 30 and 31 mobile observation system of drilling rod to next observation area, repeat step 3 to step 4, successively to drilling 2 into
Row measurement.
The part do not addressed in the present invention uses or uses for reference prior art and can be achieved.
Claims (6)
1. a kind of closure both-end observation procedure for wall-rock crack, its used observation system includes detection system, closure
System and supply propulsion system, the detection system are installed in the drilling of wall-rock crack, it is characterised in that：
The detection system includes the first probe unit, the second probe unit, the 3rd probe unit, the 4th probe unit, pressure
Regulating valve, card slot connector and U-tube road, first probe unit is positioned at the outermost of drilling, the 4th probe unit position
In the most inner side of drilling, the card slot connector is arranged between adjacent probe unit, the front portion of the first probe unit and the 4th
The afterbody of probe unit, each probe unit include communicating pipe and the leak pipe of parallel arrangement, are set in each card slot connector
It has been equipped with swollen hole；
Hydraulic pressure converting system is provided with the card slot connector of the 4th probe unit afterbody, the hydraulic pressure converting system includes hydraulic pressure
Converter and card slot pipe fitting, the hydraulic pressure converter include piston and matrix two parts, and piston left side area is more than
Right side area, is provided with interconnected water-guiding hole in the piston, the water-guiding hole positioned at right end passes through aperture and the card
Trough connection is connected, and by matrix inner wall sealing when starting positioned at the water-guiding hole of left end, the right end of piston is provided with boss, described
Boss is used to carry out the spring one in piston spacing, and the piston is controlling the drilling in left end water-guiding hole and wall-rock crack
Keep connection or close；
The plugging system includes closure capsule, and the closure capsule surrounds the outside of each card slot connector；
The supply propulsion system includes water flood operations platform one, water flood operations platform two and oil gear, is leaked in each probe unit
Oil pipe road is both provided with above water pipe, the oil gear includes oil pressure tank, accumulator and shut-off valve；
The observation procedure comprises the following steps：
A drillings, the multiple drillings for predetermined angular of successively constructing into top plate or floor rock in coal petrography tunnel, hole depth 30-
70m；
B installs observation system, successively by the first probe unit, the second probe unit, the 3rd probe unit and the 4th probe unit
Communicating pipe and leak pipe linked together by card slot connector so that communicating pipe of adjacent detector unit keeps connection, is located at
The leak pipe of first probe unit and the second probe unit, the 3rd probe unit and the 4th probe unit keeps connection, positioned at the
Leak pipe between two probe units and the 3rd probe unit is divided into independent two parts by card slot connector, respectively detects I
II sections of section and detection；
Card slot connector between the first probe unit and the second probe unit, between the 3rd probe unit and the 4th probe unit
Interior installation pressure-regulating valve, the 4th probe unit stretch into one end connection U-tube road of drilling, and hydraulic pressure converting system is installed on the
On the card slot connector of four probe unit afterbodys；
Closure capsule is surrounded to the outside of each card slot connector, water flood operations platform one is connected for I sections with detection, water flood operations platform
Two are connected with communicating pipe, and oil pipe road is connected with oil gear；
C closing drillings, after it reaches initial position, are injected with water flood operations platform one and water flood operations platform two into observation system
Water source reaches predetermined initial water pressure to play swollen closure capsule to it；
D measures flowing water vector parameters, including following sub-step：
(1) setting hydraulic pressure converter Opening pressure is 2.5 than m, takes observation hydraulic pressure PIt is leftFor 0.1MPa；
(2) 2.5MPa water sources are injected into communicating pipe by water flood operations platform two, on the one hand play swollen closure capsule by playing swollen hole,
On the other hand, with 0.1MPa water fillings into the 4th probe unit, observation after which is changed by hydraulic pressure converter；Keep hydraulic pressure
After 1-2 minutes, read and calculate average wastage L in time period1；At the same time, visited by water flood operations platform one to first
Survey in unit and 0.1MPa observations water source is directly provided, it is corresponding to read and calculate average wastage L in time period2；
(3) step (2) is connect, the high pressure oil of certain pressure is provided by oil gear into pressure-regulating valve, makes piston group to another
One end movement connects square hole, and at this time, the first probe unit is connected with the second probe unit, and the 4th probe unit and the 3rd is visited
Unit connection is surveyed, opens shut-off valve and accumulator, keeps high pressure oil pressure, makes observation water source respectively to the second probe unit, the
Supplement in three probe units, and worked on 0.1MPa pressure, wait 1-2 minutes, read respectively and calculate first and second detection
The average wastage L of unit and third and fourth probe unit3, L4, at this time, L3- L2The average leakage of as the second probe unit
Amount, L4- L1The as average wastage of the 3rd probe unit；
E withdraws pressure water source and high pressure oil, closure capsule and pressure-regulating valve is in depressurization phase, is then promoted using supply
To next observation area, repeat step c, d, successively measures drilling system mobile observation system.
2. the closure both-end observation procedure according to claim 1 for wall-rock crack, it is characterised in that：The card slot connects
Two parallel passages are additionally provided with head, are respectively passage I and passage II, the passage I by the leak of adjacent detector unit
Pipe links together, and the passage II links together the communicating pipe of adjacent detector unit, positioned at the second probe unit and
Block is provided with passage I between three probe units, the block separates the second probe unit and the 3rd probe unit；Institute
State and be provided with oil pipe road interface above passage I, oil pipe road interface is connected on the oil pipe road, described swollen hole
It is arranged on below the passage II.
3. the closure both-end observation procedure according to claim 2 for wall-rock crack, it is characterised in that：The passage I
Between leak pipe, passage II and be to be threadedly coupled between communicating pipe.
4. the closure both-end observation procedure according to claim 1 for wall-rock crack, it is characterised in that：The pressure tune
Saving valve includes asymmetric piston group, spring two, the oil-through-hole positioned at top and the square hole positioned at sidepiece, the oil-through-hole and institute
State the connection of oil pipe road.
5. the closure both-end observation procedure according to claim 1 for wall-rock crack, it is characterised in that：The supply pushes away
Pressure of return water table, electronic logger, drilling machine and drilling rod are further included into system, the electronic logger is installed on water flood operations platform
On, the pressure of return water table is used to be corrected detection to the pressure of return water in return pipe.
6. the closure both-end observation procedure according to claim 1 for wall-rock crack, it is characterised in that：The oil pipe
Road is fixed on each card slot connector by fastening screw.
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| CN107859512B (en) * | 2017-12-05 | 2022-03-04 | 山东科技大学 | Double-section type top and bottom plate surrounding rock damage range observation system |
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| CN108643900B (en) * | 2018-04-20 | 2021-08-17 | 大连理工大学 | Mining destructive zone segmented observation system for mine roof and floor |
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