CN205861254U - Compensation crustal stress absolute value measures system - Google Patents
Compensation crustal stress absolute value measures system Download PDFInfo
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- CN205861254U CN205861254U CN201620769344.3U CN201620769344U CN205861254U CN 205861254 U CN205861254 U CN 205861254U CN 201620769344 U CN201620769344 U CN 201620769344U CN 205861254 U CN205861254 U CN 205861254U
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- servomotor
- control circuit
- absolute value
- cylinder body
- piston
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Abstract
The present utility model relates to compensation crustal stress absolute value and measures system, especially for measuring crustal stress absolute value in rock-boring, belongs to technical field of measuring equipment.The compensation crustal stress absolute value that this utility model provides is measured system and is made up of two parts: intelligent measure and servo control circuit part, hydraulic load cells mechanical part.Electric pressure signal in the hydraulic circuit that the dynamometry sensing element being placed in sensor will record sends signal difference amplifier in intelligent measure and servo control circuit part to, realize two-part connection, after the digital processing of the complete pair signals of single-chip microcomputer and measurement, send the signal controlling servomotor operating, the power transmission shaft of servomotor is that mechanicalness connects with the driving screw rod of sensor, and the Guan Bi forming electromechanical integration measures control loop.
Description
Technical field
The present utility model relates to compensation crustal stress absolute value and measures system, measures especially in rock-boring
Crustal stress absolute value, belongs to technical field of measuring equipment.
Background technology
In crust deep part rock, geostress survey is that one learns engineering far-reachingly, and it is directly connected to underground mineral
Exploration and development, underground and the safety of ground large artificial structure and the prediction of geological disaster and prevention.So, now
Earth science research field, the geostress survey in rock stratum and monitoring are paid much attention to.The many measuring method of development in recent years and
Technological means, common are hydraulic fracturing, boring deformation method, over-coring stress relief method and Borchole breakout method etc..It was verified that
The credibility that rock-boring over-coring stress relief method measures crustal stress is much higher.Along with patent of invention " wireless deep-well crustal stress
Absolute value measures sensor ", the successful Application of patent No. ZL201120270437.9, promote boring and coring to release and measure crustal stress
Technology the most before go a step further.But the geostress survey technology of boring and coring releasing at present should under different geological conditions
With, however it remains many difficulties and problem, it would be highly desirable to solve:
1. rock is sufficiently complete, and drilling depth is excessive, and it is the most relatively difficult that set drills through core.
2. original equipment frame for movement is more complicated, and automaticity is not high enough, measures parts and is difficult to fully seal with the external world,
Easily being invaded by the water under high pressure in drilling process, rock dust, in equipment Reusability, repair amount is big, and professional technique is wanted
Ask high.
3. complete to measure work and not only need the experimental data in itemized record drilling process, and change and need sensor strip
Core completely takes out, and could calculate the size and Orientation of the absolute value of stress practically asking for this point after the calibration value in situ of ground,
Efficiency is low, and success rate is lower.
Therefore, developing and improve geostress survey equipment, improve it measuring technical merit is a task the most urgent.
Utility model content
For above-mentioned technical problem, this utility model provides a kind of and measures the equipment of horizontal direction crustal stress in rock, it
Employing fluid pressure type loads, and Intelligent servo compensation way is measured, and it installs, load, creep into release and once complete.The data of record are
The stress value component value primitively of measuring point, set core release process finish after directly give this point crustal stress absolute value size and
Can (match with bearing measurement data) in direction, so measuring point core is the most complete, take out and completely extract rock drilling core all
Become inessential.The shortcoming overcoming patent ZL201120270437.9, has greatly expanded the model of absolute ground-stress meassurement
Farmland, is likely to carry out boring overcoring method geostress survey in the ravelly ground that fault disruption zone area and intensity are the biggest.
In order to reach the purpose of the present utility model, this utility model is achieved by the following technical solution:
Compensation crustal stress absolute value measures system, and including housing, there are connecting rod and antenna in the top of housing, have in housing
Measuring and control circuit plate, driven by servomotor circuit board, set of cells and servomotor, servomotor lower end connects fluid pressure type and surveys
Force transducer；
Hydraulic load cells, including cylinder body, cylinder body has cavity, cavity top to have driving screw rod, drives screw rod lower end
Connect briquetting, connect below briquetting and load piston；Dynamometry sensing element is installed in the bypass of cavity；Cylinder body lower end is connected by pipeline
Horizontal piston cylinder body, pipeline upper end connects with loading oil pocket below piston；Three groups of pistons, respectively water are had in horizontal piston cylinder body
Flat piston set A, horizontal piston group B, left horizontal piston group C；Often the interstitial area between the two parts of group piston left and right is connected with pipeline；
Dynamometry sensing element is connected with measurement and control circuit plate by measuring signal difference amplifier；Dynamometry sensing element
The most also being connected with servomotor, servomotor is connected with driven by servomotor circuit board. and driven by servomotor circuit board passes through
Loop-locking switch is connected with measurement and control circuit plate, measures and control circuit plate is connected with antenna and set of cells respectively.
The compensation crustal stress absolute value that this utility model provides is measured system and is made up of two parts: intelligent measure and servo
Control circuit part, hydraulic load cells mechanical part.The hydraulic pressure that the dynamometry sensing element being placed in sensor will record
Electric pressure signal in loop sends signal difference amplifier in intelligent measure and servo control circuit part to, it is achieved two parts
Connection, the digital processing of the complete pair signals of single-chip microcomputer and measure after, send control servomotor operating signal, servomotor
Power transmission shaft with the driving screw rod of sensor be mechanicalness connect, formed electromechanical integration Guan Bi measure control loop.
Measure to realize crustal stress absolute value, same measuring point must set three orientation and differ the stress survey of 60 °
Fixed, so sensor must have the hydraulic measurement loop that three sets are independent, its technical performance is identical, and their realization then utilizes
Φ 36mm measures the lateral aperture opening 60 ° of angles of three groups of horizontal plane mutual deviations on cylinder body, opens three water with minimal gradient difference on cylinder body
Flat hole, is about equal in same level, by realize in the horizontal piston group load hole respectively of measurement, often about group piston
Interstitial area between two parts links up hydraulic cylinder by pipeline, and the song that Φ 36mm cylinder body curvature is identical is processed in horizontal piston outer face
Face, it is simple to the preferably measurement rock-boring with same footpath coincide.Piston all carries sealing ring and forms sealing with smooth lateral aperture
Passage.Briquetting drive screw rod to promote cylinder when servomotor rotates in, when promoting dynamometry sensing element and load piston-advance,
In hydraulic cylinder, pressure increases, and hydraulic pressure is delivered between two horizontal piston gaps by the road, and pressure promotes left and right piston to do contrary
Radial motion, the counteracting force of the boring crag that horizontal piston is experienced, the change as hydraulic pressure is positioned in hydraulic circuit
Dynamometry sensing element measures, and it is measured signal and the pressure in hydraulic cylinder and the stress loading in rock is associated, here it is this
The technical foundation of measurement equipment, the coefficient being associated between they each values, the most by all kinds of specific rock-like
This is tried to achieve as constant the most in advance as calibration medium, so can directly obtain each measurement components of stress in the application, so
After provide the size and Orientation of stress value utterly of this point.
In the system of equipment designs, this utility model have employed compensation automatic equilibrium mesaurement technology.System work letter
State as follows: first, give and measure boring loading prestressing force (its value determines relevant with the factors such as lithology, geological structure), example
Such as σ0, its corresponding corresponding output V measuring signal difference amplifier0, open loop-locking switch, regulation calibration signal is sent into and is surveyed
Amount signal difference amplifier-end so that it is output is equal to V0, closed circuit locking switch, system loads prestressing force automatically, and hydraulic pressure returns
The on-load pressure on road, by dynamometry sensing element with the signal of telecommunication deliver to measure signal difference amplifier+end so that it is output V0Gradually
Diminishing until equal to 0, system enters balance lock-out state, set core stress relieving process can start, along with overcoring enters to survey
The core at amount position is peeled off with peripheral rock gradually, and in rock, primitive stress is released and directly results in the pressure of hydraulic system and do phase
The change answered, this change exports the corresponding signal of telecommunication via dynamometry sensing element and measures signal difference amplifier+end, making measurement
The output of signal difference amplifier becomes V from 0i, ViDeliver to measure and completed digitized processing with control circuit plate 22 by single-chip microcomputer, complete
After becoming original data record, export corresponding Serve Motor Control signal, the pressure starting hydraulic circuit for regulating of servomotor,
Make the output of measurement signal difference amplifier from ViChanging to 0, system comes back to lock poised state.One-shot measurement is the completeest
Become, ViValue can directly be converted into the original value of crustal stress, in rock, the crustal stress amount of release is via hydraulic circuit pressure
Power regulated quantity compensates and makes measurement loop come back to poised state, so being called compensation all automatic measurement system.
Accompanying drawing explanation
Fig. 1 is principle assumption diagram of the present utility model；
Fig. 2 is hydraulic load cells structural representation of the present utility model；
Fig. 3 is structural representation of the present utility model.
Detailed description of the invention
Accompanying drawings detailed description of the invention of the present utility model.
As shown in Figure 1, Figure 2 and Figure 3, compensation crustal stress absolute value measures system, including housing 25, the top of housing 25
There are connecting rod 20 and antenna 21, in housing 25, have measurement and control circuit plate 22, driven by servomotor circuit board 23, set of cells 24
With servomotor 26, servomotor 26 lower end connects hydraulic load cells 27；
Hydraulic load cells 27, including cylinder body 13, cylinder body 13 has cavity, cavity top to have driving screw rod 9, drives spiral shell
Bar 9 lower end connects briquetting 10, connects and load piston 12 below briquetting 10；Dynamometry sensing element 11 is installed in the bypass of cavity；Cylinder body
13 lower ends connect horizontal piston cylinder body 15 by pipeline 14, and pipeline 14 upper end connects with loading oil pocket below piston 12；Level is lived
Three groups of pistons, respectively horizontal piston group A16, horizontal piston group B17, left horizontal piston group C18 are had in plug cylinder body 15；Often organize work
Interstitial area between the two parts of plug left and right is connected with pipeline 14；
Dynamometry sensing element 11 is connected with measurement and control circuit plate 22 by measuring signal difference amplifier 2；Dynamometry is quick
Sensing unit 11 is the most also connected with servomotor 26, and servomotor 26 is connected with driven by servomotor circuit board 23. servomotor
Drive circuit board 23 is connected with measurement and control circuit plate 22 by loop-locking switch 4, measures with control circuit plate 22 respectively
It is connected with antenna 21 and set of cells 24.
Dynamometry sensing element 11 uses pressure magnetoelectricity sensing force sensitive element, it is possible to select all kinds of load-sensing unit, such as: pressure-volume
Formula, pressure resistance type etc..
Measure signal difference amplifier 2 and use AD698 type differential transformer sensor special circuit, utilize the letter that it is good
Number treatment characteristic and powerful differential input function.At+end input pickup dynamometry signal, at-end input auxiliary dynamometry signal,
Owing to both of which do as one likes can be taken on by identical sensing element, thus the signal of telecommunication of generation except have gauger and unsettled person it
Outward, the environmental condition of its impression non-is identical, thus differential as a result, it is possible to greatly eliminate all kinds of interference, improve system
Performance, and assist load-sensing unit also convenient for system prestressing force load provide easily may.
Measure and control circuit plate 22 have employed chip microcomputer 80C552 chip.It is controlled with high-precision A/D input and D/A
System output, under dynamometry input signal Δ Vx effect, 2 parts export corresponding DC voltage ViChange via A/D, after digital filtering
Complete to measure and data preservation, sent the analogue signal of control motor simultaneously via PID Controller by D/A.This circuit is also
Oriented host computer sends measurement data and the ability of underground equipment work state information, so that receiving the control life that host computer is sent
Operating system etc. is made to make measurement system the most intelligent.
Loop-locking switch 4 is external switch, sets or the selection function of closed-loop measuring as system open loop.
Driven by servomotor circuit board 23 is taken on by high-power TTL signal control circuit MC33030.
Servomotor 26 is servomotor maxon motor 224864 type.
Antenna 21 includes high frequency wireless data transfer module, such as BM100 etc..
Set of cells 24 is the lithium battery group of 4Ah capacity 12V voltage.
Claims (1)
- The most compensation crustal stress absolute value measures system, it is characterised in that: include that housing (25), the top of housing (25) have connection Bar (20) and antenna (21), have measurement and control circuit plate (22), driven by servomotor circuit board (23), battery in housing (25) Group (24) and servomotor (26), servomotor (26) lower end connects hydraulic load cells (27)；Hydraulic load cells (27), including cylinder body (13), cylinder body (13) has cavity, cavity top to have driving screw rod (9), drives Dynamic screw rod (9) lower end connects briquetting (10), and briquetting (10) lower section connects loading piston (12)；It is sensitive that dynamometry is installed in the bypass of cavity Element (11)；Cylinder body (13) lower end connects horizontal piston cylinder body (15), pipeline (14) upper end and loading piston by pipeline (14) (12) lower section oil pocket connection；Three groups of pistons, respectively horizontal piston group A (16), horizontal piston are had in horizontal piston cylinder body (15) Group B (17), left horizontal piston group C (18)；Often the interstitial area between the two parts of group piston left and right is connected with pipeline (14)；Dynamometry sensing element (11) is connected with measurement and control circuit plate (22) by measuring signal difference amplifier (2)；Dynamometry Sensing element (11) is the most also connected with servomotor (26), and servomotor (26) is with driven by servomotor circuit board (23) even Connect. driven by servomotor circuit board (23) by loop-locking switch (4) with measure and control circuit plate (22) be connected, measurement with Control circuit plate (22) is connected with antenna (21) and set of cells (24) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620769344.3U CN205861254U (en) | 2016-07-20 | 2016-07-20 | Compensation crustal stress absolute value measures system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620769344.3U CN205861254U (en) | 2016-07-20 | 2016-07-20 | Compensation crustal stress absolute value measures system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205861254U true CN205861254U (en) | 2017-01-04 |
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ID=57648191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620769344.3U Expired - Fee Related CN205861254U (en) | 2016-07-20 | 2016-07-20 | Compensation crustal stress absolute value measures system |
Country Status (1)
| Country | Link |
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| CN (1) | CN205861254U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110006568A (en) * | 2019-04-12 | 2019-07-12 | 中国地质科学院地质力学研究所 | It is a kind of to obtain the method for three-dimensional ground stress using core and its obtain system |
| CN110231456A (en) * | 2019-06-17 | 2019-09-13 | 中铁第四勘察设计院集团有限公司 | Measuring device |
-
2016
- 2016-07-20 CN CN201620769344.3U patent/CN205861254U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110006568A (en) * | 2019-04-12 | 2019-07-12 | 中国地质科学院地质力学研究所 | It is a kind of to obtain the method for three-dimensional ground stress using core and its obtain system |
| CN110006568B (en) * | 2019-04-12 | 2020-01-07 | 中国地质科学院地质力学研究所 | Method and system for acquiring three-dimensional ground stress by using rock core |
| CN110231456A (en) * | 2019-06-17 | 2019-09-13 | 中铁第四勘察设计院集团有限公司 | Measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170104 Termination date: 20200720 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |