CN108709841A - Permeability of rock in-situ testing device - Google Patents
Permeability of rock in-situ testing device Download PDFInfo
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- CN108709841A CN108709841A CN201810375948.3A CN201810375948A CN108709841A CN 108709841 A CN108709841 A CN 108709841A CN 201810375948 A CN201810375948 A CN 201810375948A CN 108709841 A CN108709841 A CN 108709841A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
Abstract
The invention belongs to rock mass damage range and permeability determination techniques fields, disclose Permeability of rock in-situ testing device, including test probe, propulsive mechanism, control mechanism, test probe includes rubber bag tank, leak pipe, converter, communicating pipe, leak pipe both ends are connected on connector one, connector two or connector three, the periphery of leak pipe between two connectors is surrounded with a rubber bag tank, and certain closure cavity is formed between rubber bag tank and leak pipe.Converter inside is provided with a taper conversion body, and inside taper conversion body and surface has a limbers, the hole one on annular water tank, with converter and forms leak paths.The test device can utilize blocking high-pressure water source to the conversion at observation low pressure water source, realize that closure process and test process work under respective pressure under same water source, it is one to reduce drilling interior conduit, eliminates the winding problem of drilling rod and hose, improves the stability of the course of work.
Description
Technical field
The invention belongs to rock mass damage range and permeability determination techniques fields, and in particular to Permeability of rock in-situ test
Device.
Background technology
Permeability of rock is the important parameter for reacting rock mass damage feature, and the change of Permeability of rock energy destroys closely with it
Correlation, the damage envelope of rock mass can further be judged by probing into the variation of its permeability, for further study rock mass damage mechanism and
Mechanism of water inrush has great importance.Currently, having DC electrical method, transient electromagnetic to the common means of the detection of rock mass damage range
Method, microseismic detection and packer permeability test method.Due to DC electrical method and transient electromagnetic method, it is easy the electromagnetic field shadow by operating environment
It rings, and microseismic detection method, signal propagation are vulnerable to Effect of Fissure, therefore with " drilling both-end plugging device " for the fields water injection of representative
Test method(s) the data obtained is the most accurate reliable.Currently, outside drilling both-end plugging device, there are plugging operations platform and water supplying operations
Two operating systems of platform, required personnel are more, and operation is more troublesome.Since two operation consoles of external water supply and gas supply are mutual
It is independent, two pipelines of the water supply (observation is used) being correspondingly connected with and gas supply (block and use) are bound to cause, are being bored with test probe
The progradation in hole occurs two pipelines and mutually winds problem, gently then causes that device blocks or observation process is unstable, heavy then hold
Easy-to-draw cut-off feed channel, causes equipment can not work normally.So that closure and supply operation console is combined into one, reduces in drilling
Number of tubes, while being that closure process and observation process work under respective pressure and keep real-time moisturizing process, the prior art
Fail to solve the above problems simultaneously.
Invention content
The purpose of the present invention is to provide a kind of Permeability of rock in-situ testing devices.
Technical scheme of the present invention：
A kind of Permeability of rock in-situ testing device, including test probe, propulsive mechanism and control mechanism；
The test probe includes rubber bag tank 5, leak pipe 3, converter 6 and communicating pipe 28, and 3 both ends of leak pipe connect respectively
It is connected on connector 1, connector 24 or connector 37, the periphery of the leak pipe 3 between two connectors is surrounded with rubber bag tank 5, rubber
It is formed between capsule 5 and leak pipe 3 and blocks cavity 30；Converter 6 is internally provided with taper conversion body 10, in taper conversion body 10
Portion and surface have limbers 23, the hole 1 on annular water tank 22, with converter 6 and form leak paths；
The propulsive mechanism includes drilling machine 14 and hollow stem 12, and hollow stem 12 passes through connector 37 and test probe screw thread
Connection；
The control mechanism includes cock of water drain 15, master control switch 18, flowmeter 16, pressure gauge 1 and pressure gauge two
19, it is used for the water filling into test probe, outer water-supply source pressure is controlled, shows and record parameters；
The quantity of the connector 1 is one, is cylindric, thread cavity is had inside its both ends, respectively
It is threadedly coupled with leak pipe 3 and seeker 1；
The seeker 1 is tapered, for be oriented in test probe progradation；
There are two the quantity of the rubber bag tank 5, and the rubber bag tank 5 of front is fixed on connector 1 by tight loop 24 and connects
First 24 outer end, the rubber bag tank 5 of tail portion are fixed on the outside of two connectors 37；
3 quantity of leak pipe is two, and both ends are threadedly coupled respectively at connector 1, connector 24 or connector 33,
It is driveed on leak pipe 3 there are two hole 3 25, external high pressure water source through hole 3 25 enters the closure between rubber bag tank 5 and leak pipe 3
Inside cavity 30, plays swollen rubber bag tank 30 and form a water filling cavity 29 with drilling 31；
The converter 6 is threadedly coupled with 24 left end of connector, whole cylindrical, and outer wall is driveed there are one hole 1,
Intermediate position is provided with central through hole 32, and the right end of central through hole 32 is more than left end；
6 side walls of converter are distributed centered on central through hole 32 there are four periphery through-hole 33, periphery through-hole 33
It is connected with the right end of central through hole 32 and hole 1；
Installation taper conversion body 10, resetting spring 9 and adjusting screw 8 in the periphery through-hole 33 of the converter 6；It resets
Between taper conversion body 10 and adjusting screw 8, adjusting screw 8 is threaded spring 9 with 33 inner wall of periphery through-hole, passes through
The position for rotating adjusting screw 8 to control the tensioning dynamics of resetting spring 9, and then controls the Opening pressure of taper conversion body 10；
10 left and right ends of taper conversion body are cylindric, and left end is thick compared with right end, the transition position of left and right ends
For sealing cone 26, sealing cone 26 is 30 °, just agrees with to form sealing function with 26 phase of the sealing cone of periphery through-hole 33, is hindered
Only right end blocks high-pressure water and is flowed through from 10 side surface of taper conversion body；
Hexagonal hole 2 21 is provided among the adjusting screw 8, there are two the effects of hole 2 21, on the one hand can utilize outer
On the other hand portion's tool rotates adjusting screw 8 by the hole 2 21 makes the observation low pressure water source through hole two in water filling cavity 29
21 react on 10 left side of taper conversion body；
Annular water tank 22 in the taper conversion body 10 is connected with limbers 23, and right end is made to block high-pressure water warp
Limbers 23, annular water tank 22 are crossed, taper conversion body 10 is pushed to be moved to left end, is flowed into water filling cavity 29 through hole 1；
The communicating pipe 28 is that cylindrical outer end seals hollow tube, communicating pipe 28 left and right ends respectively with connector
37, converter 6 is threaded；
37 outer wall of connector is provided with circular baffle plate 11, and the two is threaded, and 11 diameter of circular baffle plate is more than rubber
On the one hand 5 diameter of capsule reduces the friction of drilling 31 and rubber bag tank 5 in progradation, protect rubber bag tank 5, on the other hand, rise
To positioning action, prevent rubber bag tank 5 from sliding；
When taper conversion body 10 meets PIt is leftSIt is left+kx≤PIt is rightSIt is rightWhen, taper conversion body 10 is moved to the left, annular water tank 22 and hole
One 20 connections carry out water filling observation to the water filling cavity 29 in drilling 31；When taper conversion body 10 meets PIt is leftSIt is left+kx≥PIt is rightSIt is right
When, then taper conversion body 10 moves right, and annular water tank 22 is closed by 33 inner wall of periphery through-hole, stops supplying to water filling cavity 29
Water；If PIt is rightIt is excessive, to prevent PIt is rightExtreme hydraulic pressure damages 31 inner wall of drilling of 29 part of water filling cavity, then taper conversion body
10 are moved to the left, until annular water tank 22 is moved to the left end in hole 1, sealing process is formed with 33 inner wall of periphery through-hole；PIt is leftFor note
Water cavity observes source pressure, generally 0.5MPa, PIt is rightTo be externally supplied source pressure, generally 1.5MPa, SIt is leftTurn for taper
Change body left side discharge area, SIt is rightFor taper conversion body right side discharge area, k is coefficient of elasticity in resetting spring, and x is compression
Amount, takes annular water tank to the distance in hole one；
The control mechanism includes cock of water drain 15, flowmeter 16, pressure gauge 1, master control switch 18 and pressure gauge two
19；After cock of water drain 15 is observed to test probe, the water blocked in cavity 30 is given off, makes rubber bag tank 5 and drilling 31
It disengages, convenient for promoting；For flowmeter 16 to detect external feedwater flow, pressure gauge 1 is stem-winder, outer to detect
Portion's feed pressure, pressure gauge 2 19 are electronic watch, and detection hydraulic pressure numerical value mutually detects correction with one surveyed numerical value of pressure gauge；Always
The confession that control switch 18 is responsible for the external water supply of control stops；
The propulsive mechanism includes drilling machine 14 and hollow stem 12, hollow stem 12 can standard screw thread spreading test probe, lead to
Crossing drilling machine 14 promotes hollow stem 12 to 31 specified search coverages of drilling.
Beneficial effects of the present invention：
(1) present invention proposes Permeability of rock in-situ testing device, and compared with prior art, the arrangement achieves tests
The closure of probe is test integrated, reduces the number of tubes worked at the same time in drilling, solves in progradation in drilling
Multi-pipeline mutually winds problem, improves the stability of rock mass damage range measurement process.
(2) the arrangement achieves water source is blocked in integrated process to observation water source pressure conversion, observation process is solved
Middle closure water source and observation water source work problem under respective pressure, avoid observation water source hypertonia and are broken to borehole fissure
Bad effect, improves the accuracy of rock mass damage range measurement process.
(3) the built-in cooperation resetting spring of taper conversion body and sealing cone design in converter, is not only convenient for taper conversion
Body is easy to reset in time, improves the stability of the converter course of work, and solves and block water source to the conversion of observation water source
Leakproofness, ensure that Opening pressure.
(4) design of the adjusting screw with hexagon through-hole in converter is not only convenient for rotation adjusting screw compression and resets
Spring, control taper conversion body have different unlatchings and switching to pressure, and adjustable range is extensive, adapts to different work requirements,
And the low pressure water in water filling cavity can be made to pass through the through-hole feedback effect in adjusting screw and convert body side surface in taper, make tune
Pressure is more sensitive and balances.
(5) in taper conversion body annular water tank design, limbers and converter in taper conversion body can be solved and be discharged
Mouth not correspondence problem ensures no matter how taper conversion body rotates, and the water in limbers can be flowed to by annular water tank
Transducer outlet.
Description of the drawings
Fig. 1 is the overall structure and observation state schematic diagram of Permeability of rock in-situ testing device of the present invention；
Fig. 2 is the release advanced state schematic diagram of Permeability of rock in-situ testing device of the present invention；
Fig. 3 is the structural schematic diagram of test probe in Permeability of rock in-situ testing device of the present invention；
Fig. 4 is plugging structure schematic diagram in Permeability of rock in-situ testing device of the present invention；
Fig. 5 (a) is converter structural front view in Permeability of rock in-situ testing device of the present invention；
Fig. 5 (b) is converter structural side view in Permeability of rock in-situ testing device of the present invention；
Fig. 6 (a) is converter stationary state schematic diagram in Permeability of rock in-situ testing device of the present invention；
Fig. 6 (b) is converter working state schematic representation in Permeability of rock in-situ testing device of the present invention；
Fig. 7 (a) is taper conversion body structural front view in Permeability of rock in-situ testing device of the present invention；
Fig. 7 (b) is taper conversion body structure rearview in Permeability of rock in-situ testing device of the present invention；
Fig. 7 (c) is taper conversion body structural side view in Permeability of rock in-situ testing device of the present invention；
Fig. 8 (a) is adjusting screw structural front view in Permeability of rock in-situ testing device of the present invention；
Fig. 8 (b) is adjusting screw structural side view in Permeability of rock in-situ testing device of the present invention；
In figure：1 seeker；2 connectors one；3 leak pipes；4 connectors two；5 rubber bag tanks；6 converters；7 connectors three；8 adjust spiral shell
Silk；9 resetting springs；10 taper conversion bodies；11 circular baffle plates；12 hollow stems；13 high-pressure hoses；14 drilling machines；15 cock of water drain；16
Flowmeter；17 pressure gauges one；18 master controls switch；19 pressure gauges two；20 holes one；21 holes two；22 annular water tanks；23 limbers；24
Tight loop；25 holes three；26 sealing cones；27 rock mass to be measured；28 communicating pipes；29 water filling cavitys；30 block cavity；31 drillings；32
Central through hole；33 periphery through-holes.
Specific implementation mode
The present invention is described in further details with reference to specific embodiment.
A kind of Permeability of rock in-situ testing device includes mainly test probe, propulsive mechanism, control mechanism；
As shown in Figs. 1-3, the test probe includes rubber bag tank 5, leak pipe 3, converter 6, communicating pipe 28, the leak
3 both ends of pipe are connected on connector 1, connector 24 or connector 37, the periphery wrapping of the leak pipe 3 between two connectors
There is a rubber bag tank 5, certain closure cavity 30 is formed between 3 pipe of rubber bag tank 5 and leak.The converter 6 is internally provided with one
Taper conversion body 10, the inside of taper conversion body 10 and surface have a limbers 23, on annular water tank 22, with converter 6
Hole 1 formed leak paths.
The propulsive mechanism includes mainly drilling machine 14 and hollow stem 12, and the hollow stem 12 can the test spy of standard screw thread spreading
Head promotes hollow stem 12 to 31 specified search coverages of drilling by the drilling machine 14.
The control mechanism includes cock of water drain 15, flowmeter 16, pressure gauge 1, master control switch 18 and pressure gauge two
19.After the cock of water drain 15 is observed to test probe, the water blocked in cavity 30 is given off, makes rubber bag tank 5 and bores
Hole 31 disengages, convenient for promoting.For the flowmeter 16 to detect external feedwater flow, the pressure gauge 1 is machinery
Table, to detect external feed pressure, the pressure gauge 2 19 is electronic watch, detection hydraulic pressure numerical value and one institute of the pressure gauge
It surveys numerical value and mutually detects correction.The confession that the master control switch 18 is responsible for the external water supply of control stops.
One 2 quantity of the connector is one, and to be cylindric, a thread cavity is had inside its both ends, respectively with
Leak pipe 3 and seeker 1 are threadedly coupled.
The seeker 1 is tapered, for be oriented in test probe progradation.
As shown in Figure 1 and Figure 4, there are two 5 quantity of the rubber bag tank, the rubber bag tank 5 of front is fixed on by tight loop 24
The outer end of connector 1 and connector 24, the rubber bag tank 5 of tail portion are fixed on the outside of two connectors 37.
3 quantity of leak pipe is two, and both ends are respectively at 37 screw thread of the connector 1, connector 24 or connector
Connection is driveed on the leak pipe 3 there are two hole 3 25, external high pressure water source through hole 3 25 enter rubber bag tank 5 and leak pipe 3 it
Between closure cavity 30 inside, rise swollen rubber bag tank 5 with drilling 31 formed a water filling cavitys 29.
The communicating pipe 28 is that cylindrical outer end seals hollow tube, communicating pipe 28 left and right ends respectively with connector three
7, converter 6 is threaded.
37 outer wall of the connector is provided with circular baffle plate 11, and the two is threaded, and 11 diameter of the circular baffle plate is more than
On the one hand 5 diameter of rubber bag tank can reduce the friction of drilling 31 and rubber bag tank 5 in progradation, protect rubber bag tank 5, another party
Face can play positioning action, prevent rubber bag tank 5 from sliding.
As shown in figure 5, the converter 6 is threadedly coupled with 24 left end of connector, whole cylindrical, outer wall is provided with one
A hole 1, intermediate position are provided with central through hole 32, and right end central through hole 32 is more than left end central through hole 32.
6 side walls of the converter are distributed centered on central through hole 32 there are four periphery through-hole 33, the periphery through-hole
33 are connected with the right end central through hole 32 and hole 1.
Installation taper conversion body 10, resetting spring 9 and adjusting screw 8 in the periphery through-hole 33 of the converter 6.It is described multiple
Between taper conversion body 10 and adjusting screw 8, the adjusting screw 8 connects with 33 inner wall of periphery through-hole in screw thread position spring 9
It connects, by rotating the position of adjusting screw 8, to control the tensioning dynamics of spring 9, and then controls the unlatching pressure of taper conversion body 10
Power.
As shown in fig. 7,10 left and right ends of taper conversion body are cylindric, and left end is thick compared with right end, connection left and right
Both ends are a sealing cone 26, and 10 sealing cone 26 of the taper conversion body is 30 °, the just sealing cone with periphery through-hole 33
26 phases agree with to form sealing function, prevent right end from blocking high-pressure water and are flowed through from 10 side surface of taper conversion body.
As shown in figure 8, being provided with hexagon through-hole 2 21 among the adjusting screw 8, there are two the effects of the through-hole 2 21,
On the one hand external tool can be utilized, which to rotate adjusting screw 8 on the other hand by the hole 2 21, can make in water filling cavity 29
Observation low pressure water source through hole 2 21 reacts on 10 left side of taper conversion body.
As shown in fig. 6, the annular water tank 22 in the taper conversion body 10 is connected with limbers 23, right end is set to block high
It presses water source by limbers 23, annular water tank 22, taper conversion body 10 is pushed to be moved to left end, water filling cavity is flowed into through hole 1
In 29.
When taper conversion body 10 meets PIt is leftSIt is left+kx≤PIt is rightSIt is rightWhen, taper conversion body 10 is moved to the left, annular water tank 22 and hole
One 20 connections carry out water filling observation to 31 water filling cavitys 29 of drilling；When taper conversion body 10 meets PIt is leftSIt is left+kx≥PIt is rightSIt is rightWhen, then
Taper conversion body 10 moves right, and annular water tank 22 is closed by 33 inner wall of periphery through-hole, stops supplying water to water filling cavity 29；If PIt is right
It is excessive, to prevent PIt is rightExtreme hydraulic pressure damages 31 inner wall of drilling of 29 part of water filling cavity, then taper conversion body 10 is to the left
It is mobile, until annular water tank 22 is moved to the left end in hole 1, sealing process is formed with 33 inner wall of periphery through-hole.PIt is leftFor water filling cavity
29 observation source pressures, generally 0.5MPa, PIt is rightTo be externally supplied source pressure, generally 1.5MPa, SIt is leftFor taper conversion body
10 left sides discharge area, SIt is rightFor 10 right side discharge area of taper conversion body, k is coefficient of elasticity in resetting spring 9, and x is pressure
Contracting amount takes annular water tank 22 to the distance in hole 1.
It elaborates below to the observation procedure of Permeability of rock in-situ testing device of the present invention, key step includes：
(1) construction drill 31：According to construction element, using drilling machine 14 in the quasi- brill for surveying 27 region of rock mass construction different direction
About 3~5, hole 31 is differed, and drill 31 a diameter of 89mm, and length is 70m or so, and clears up the clast in drilling 31.
(2) equipment is installed：Each component of test probe is installed, and is sequentially connected propulsive mechanism (hollow stem 12, drilling machine 14), control
Test probe is transferred to the initial position of drilling 31 using drilling machine 14 by mechanism processed etc..
(3) inspection of hermetic seal：Cock of water drain 15 is closed, master control switch 18 is opened, detection hydraulic pressure is provided to test probe, to rubber
Capsule 5 blocks leakproofness and tests, if without apparent drainage, carries out next step operation, otherwise returns to second step operation,
Check connection and the installation situation of each component, it is rear to carry out third step operation, until qualified.
(4) packer permeability test is carried out：After inspection of hermetic seal qualification, packer permeability test is carried out, probe header to be measured reaches initial position, weight
New master control switch 18 of opening simultaneously closes cock of water drain 15, to test probe offer high-pressure water, through communicating pipe 28, leak pipe 3 into
Enter to block cavity 30, play swollen rubber bag tank 5, water filling cavitys 29 are formed with drilling 31, adjust external source pressure gradually rise to
1.5MPa, after pressure gauge 1, pressure gauge 2 19, registration are stable and roughly equal, flowmeter 16 when record is stablized at this time
Registration PiAnd effective detection range Li。
(5) release promotes：Master control switch 18 is closed, cock of water drain 15 is opened, release blocks 30 pressure of cavity, waits for rubber bag tank
After 5 disengage with drilling 31, cock of water drain 15 is closed, 12 spreading test probe of new hollow stem is taken, is advanced into using drilling machine 14
Next search coverage repeats FOUR EASY STEPS, until surveying 31 overall length of finishing drilling hole.
(6) analysis is calculated：Profile of flowrate in different drillings 31 is drawn, different location in 31 length ranges of drilling is analyzed
Characteristics of fracture development and Penetration Signature (add up continuous leak section further combined with 31 inclination angle a of drilling and water leakage mutation zero
Length) damage envelope of different spaces range rock mass is calculated in Ln (n=1+2+....+k).
The part that do not addressed in the present invention uses or uses for reference prior art and can be realized.
Although more herein used the terms such as taper conversion body, converter, it is not precluded using other
The possibility of term, the simple replacement that those skilled in the art under the inspiration of the present invention do these terms should all be at this
Within the protection domain of invention.
Claims (1)
1. a kind of Permeability of rock in-situ testing device, which is characterized in that the Permeability of rock in-situ testing device includes
Test probe, propulsive mechanism and control mechanism；
The test probe includes rubber bag tank (5), leak pipe (3), converter (6) and communicating pipe (28), leak pipe (3) both ends
It is connected on connector one (2), connector two (4) or connector three (7), the periphery packet of the leak pipe (3) between two connectors
It is wound with rubber bag tank (5), is formed between rubber bag tank (5) and leak pipe (3) and blocks cavity (30)；Converter (6) is internally provided with cone
Shape conversion body (10), taper conversion body (10) is internal and surface has limbers (23), annular water tank (22), with converter
(6) hole one (20) on forms leak paths；
The propulsive mechanism includes drilling machine (14) and hollow stem (12), and hollow stem (12) passes through connector three (7) and test probe
It is threadedly coupled；
The control mechanism includes cock of water drain (15), master control switch (18), flowmeter (16), pressure gauge one (17) and pressure
Table two (19) is used for the water filling into test probe, controls outer water-supply source pressure, shows and record parameters；
The quantity of the connector one (2) is one, and to be cylindric, thread cavity is had inside its both ends, respectively with
Leak pipe (3) and seeker (1) are threadedly coupled；
The seeker (1) is tapered, for be oriented in test probe progradation；
There are two the quantity of the rubber bag tank (5), and the rubber bag tank (5) of front is fixed on connector one (2) by tight loop (24)
With the outer end of connector two (4), the rubber bag tank (5) of tail portion is fixed on the outside of two connectors three (7)；
Described leak pipe (3) quantity is two, and both ends are respectively at connector one (2), connector two (4) or connector three (3) screw thread
It connects, is driveed on leak pipe (3) there are two hole three (25), external high pressure water source through hole three (25) enters rubber bag tank (5) and leak
The closure cavity (30) managed between (3) is internal, plays swollen rubber bag tank (30) and forms a water filling cavity (29) with drilling (31)；
The converter (6) is threadedly coupled with connector two (4) left end, and whole cylindrical, outer wall is provided with hole one (20), in
Between position be provided with central through hole (32), the right end of central through hole (32) is more than left end；
Converter (6) side walls are distributed centered on central through hole (32) there are four periphery through-hole (33), periphery through-hole
(33) it is connected with the right end of central through hole (32) and hole one (20)；
Installation taper conversion body (10), resetting spring (9) and adjusting screw in the periphery through-hole (33) of the converter (6)
(8)；Resetting spring (9) is located between taper conversion body (10) and adjusting screw (8), adjusting screw (8) and periphery through-hole (33)
Inner wall is threaded, and by rotating the position of adjusting screw (8), to control the tensioning dynamics of resetting spring (9), and then controls
Taper conversion body (10 Opening pressure；
Described taper conversion body (10) left and right ends are cylindric, and left end is thick compared with right end, and the transition position of left and right ends is
Sealing cone (26), sealing cone (26) are 30 °, just mutually agree with to form sealing work with the sealing cone of periphery through-hole (33) (26)
With prevention right end blocks high-pressure water and flowed through from taper conversion body (10) side surface；
Hexagonal hole two (21) is provided among the adjusting screw (8), there are two hole two (21) effects, on the one hand can utilize
External tool rotates adjusting screw (8) by the hole two (21) on the other hand makes the observation low pressure water source in water filling cavity (29)
Through hole two (21) reacts on taper conversion body (10) left side；
Annular water tank (22) in the taper conversion body (10) is connected with limbers (23), and right end is made to block high-pressure water
By limbers (23), annular water tank (22), taper conversion body (10) is pushed to be moved to left end, it is empty to flow into water filling through hole one (20)
In chamber (29)；
The communicating pipe (28) is that cylindrical outer end seals hollow tube, communicating pipe (28) left and right ends respectively with connector
Three (7), converter (6) are threaded；
Described connector three (7) outer wall is provided with circular baffle plate (11), and the two is threaded, and circular baffle plate (11) diameter is more than
Rubber bag tank (5) diameter；
When taper conversion body (10) meets PIt is leftSIt is left+kx≤PIt is rightSIt is rightWhen, taper conversion body (10) is moved to the left, annular water tank (22) with
Hole one (20) is connected to, and water filling observation is carried out to the water filling cavity (29) in drilling (31)；When taper conversion body (10) meets PIt is leftSIt is left+
kx≥PIt is rightSIt is rightWhen, then taper conversion body (10 move right, annular water tank (22) by periphery through-hole (33) inner wall close, stop to
Water filling cavity (29) supplies water；If PIt is rightIt is excessive, to prevent PIt is rightExtreme hydraulic pressure makes drilling (31) inner wall of water filling cavity (29) part
At destruction, then taper conversion body (10) is moved to the left, until annular water tank (22) is moved to the left end in hole one (20), with periphery through-hole
(33) inner wall forms sealing process；PIt is leftSource pressure is observed for water filling cavity, is 0.5MPa, PIt is rightTo be externally supplied source pressure,
For 1.5MPa, SIt is leftFor taper conversion body (10) left side discharge area, SIt is rightFor taper conversion body (10) right side discharge area, k
For coefficient of elasticity in resetting spring (9), x is decrement, takes annular water tank (22) to the distance in hole one (20)；
The control mechanism includes cock of water drain (15), flowmeter (16), pressure gauge one (17), master control switch (18) and pressure
Table two (19)；After cock of water drain (15) is observed to test probe, the water blocked in cavity (30) is given off, rubber bag tank is made
(5) it is disengaged with drilling (31), convenient for promoting；To detect external feedwater flow, pressure gauge one (17) is flowmeter (16)
Stem-winder, to detect external feed pressure, pressure gauge two (19) is electronic watch, detection hydraulic pressure numerical value and pressure gauge one (17)
Surveyed numerical value mutually detects correction；The confession that master control switch (18) is responsible for the external water supply of control stops；
The propulsive mechanism includes drilling machine (14) and hollow stem (12), hollow stem (12) can standard screw thread spreading test probe,
Hollow stem (12) to drilling (31) is promoted to specify search coverage by drilling machine (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810375948.3A CN108709841B (en) | 2018-04-20 | 2018-04-20 | Rock mass permeability in-situ testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810375948.3A CN108709841B (en) | 2018-04-20 | 2018-04-20 | Rock mass permeability in-situ testing device |
Publications (2)
| Publication Number | Publication Date |
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| CN108709841A true CN108709841A (en) | 2018-10-26 |
| CN108709841B CN108709841B (en) | 2020-05-19 |
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| CN201810375948.3A Expired - Fee Related CN108709841B (en) | 2018-04-20 | 2018-04-20 | Rock mass permeability in-situ testing device |
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