CN105352660A - Test system for transfer function of confining pressure type borehole stress and strain gage meter - Google Patents
Test system for transfer function of confining pressure type borehole stress and strain gage meter Download PDFInfo
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- CN105352660A CN105352660A CN201510944606.5A CN201510944606A CN105352660A CN 105352660 A CN105352660 A CN 105352660A CN 201510944606 A CN201510944606 A CN 201510944606A CN 105352660 A CN105352660 A CN 105352660A
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- hydraulic
- transport function
- borehole stress
- test macro
- function test
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
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- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a test system for a transfer function of a confining pressure type borehole stress and strain gage meter, comprising a hydraulic cabin, wherein a to-be-tested probe and a hydraulic sensor are arranged in the hydraulic cabin; the hydraulic cabin is connected with a quick pressure relief valve, a water inlet pipe and a water outlet pipe; a hydraulic pump and a one-way stop valve are arranged on the water inlet pipe; a flow control valve is arranged on the water outlet pipe; and the to-be-tested probe and the hydraulic sensor are respectively connected with a data collector by a signal line. The system provides a step signal of a sharp edge by utilizing the characteristic of incompressible property of liquid and the characteristic of fast pressure relief after the liquid is pressurized, and can carry out a transfer function test on the equivalent elastic modulus of instruments, such as borehole stress and strain observation instruments.
Description
Technical field
The present invention relates to a kind of mechanical-hydraulic, electronic measurement system, particularly relate to a kind of confined pressure formula borehole stress and strain instrument transport function test macro, transport function test can be carried out to the equivalent elastic modulus of the instrument of borehole stress and strain visualizer one class.
Background technology
Transport function reflects the funtcional relationship between recording geometry input signal and output signal, comprises amplitude-frequency, phase-frequency response.When recording geometry relative complex time, adopt the method for resolving or directly accurately test comparatively difficult.At present, comparatively general way adopts step signal response high order fitting method, namely test macro inputted to the step signal of a sharp edge, according to the response condition of test macro under this step signal (output valve), carry out high order fitting, thus measure the transport function of recording geometry.
In geophysics and the earth observation, often use various boring quasi-instrument, the terrestrial stress in boring, earth strain are observed.In observation, first in the punching of earth's crust detected part, then observation probe is transferred to treat gaging hole section, use the mode of cement casting or mechanical support observation to be popped one's head in and be coupled with hole wall, make probe and hole wall reach the boundary condition welding and be coupled.In such boring, the distortion of rock just can be delivered on probe, and stress-strain observation probe reaches the object of observation according to this distortion.
In order to adapt to the requirement of observing environment and observation, the concrete moduli of this quasi-instrument is higher (generally 10
3mpa or higher), use step signal response method to measure its transport function, need each to rule, phase step type force signal that is enough large, sharp edge.Large-scale high-accuracy mechanical can provide enough large, each to rule, accurate power, but be difficult to the requirement meeting sharp edge signal; General step signal source, although enough accurate and sharp edge, signal intensity is inadequate, ess-strain cannot be made to pop one's head in and produce enough large distortion.Therefore, the equipment that this class concrete moduli of borehole stress and strain observation probe is higher, cannot test its transport function at present.
Summary of the invention
The object of this invention is to provide a kind of pressure release speed fast, can the confined pressure formula borehole stress and strain instrument transport function test macro of transport function of test stress strain probe.
The object of the invention is to be achieved through the following technical solutions:
Confined pressure formula borehole stress and strain instrument transport function test macro of the present invention, comprise hydraulic compartment, probe to be measured and hydraulic pressure transducer is provided with in described hydraulic compartment, described hydraulic compartment is connected with fast pressure relief valve, water inlet pipe and rising pipe, described water inlet pipe is provided with hydraulic pump and unidirectional stop valve, described rising pipe is provided with flow control valve, and described probe to be measured is connected with data acquisition unit respectively by signal wire with hydraulic pressure transducer.
As seen from the above technical solution provided by the invention, the confined pressure formula borehole stress and strain instrument transport function test macro that the embodiment of the present invention provides, utilize the incompressibility of water, its fast pressure relief process can be the step signal that ess-strain probe provides enough sharp edge, pressure simultaneously in hydraulic compartment belongs to liquid confined pressure, pressure isotropy, enough rule, with regard to prior art, hydraulic pressure also can be accomplished enough large, therefore meets the test request of step signal.By the response of ess-strain probe in test hydraulic pressure stress-relief process, and do high order fitting, just can strain the transport function of popping one's head in by test stress.
Accompanying drawing explanation
The structural representation of the confined pressure formula borehole stress and strain instrument transport function test macro that Fig. 1 provides for the embodiment of the present invention.
Embodiment
To be described in further detail the embodiment of the present invention below.
Confined pressure formula borehole stress and strain instrument transport function test macro of the present invention, its preferably embodiment be:
Comprise hydraulic compartment, probe to be measured and hydraulic pressure transducer is provided with in described hydraulic compartment, described hydraulic compartment is connected with fast pressure relief valve, water inlet pipe and rising pipe, described water inlet pipe is provided with hydraulic pump and unidirectional stop valve, described rising pipe is provided with flow control valve, and described probe to be measured is connected with data acquisition unit respectively by signal wire with hydraulic pressure transducer.
Described fast pressure relief valve is provided with electric-controlled switch and bore exports at the heavy caliber of more than 10mm.
Described fast pressure relief valve is placed in the top of hydraulic compartment.
Described water inlet pipe is connected with catch basin respectively with the lower end of rising pipe.
This system utilizes the fireballing characteristic of release after the incompressible characteristic of liquid and liquid pressing, provides the step signal of sharp edge.
Confined pressure formula borehole stress and strain instrument transport function test macro of the present invention, hydraulic compartment is used to pressurize and fast pressure relief to borehole stress and strain probe, utilize the incompressibility of water, its fast pressure relief process can be the step signal that ess-strain probe provides enough sharp edge, pressure simultaneously in hydraulic compartment belongs to liquid confined pressure, pressure isotropy, enough rule, with regard to prior art, hydraulic pressure also can be accomplished enough large, therefore meets the test request of step signal.By the response of ess-strain probe in test hydraulic pressure stress-relief process, and do high order fitting, just can strain the transport function of popping one's head in by test stress.Transport function test can be carried out to the equivalent elastic modulus of the instrument of borehole stress and strain visualizer one class.
Specific embodiment:
As shown in Figure 1, test macro comprises: hydraulic compartment 1, probe to be measured 2, hydraulic pump 8, unidirectional stop valve 7, flow control valve 3, hydraulic pressure transducer 6, fast pressure relief valve 5, data acquisition unit 9, catch basin 4.Hydraulic compartment 1 is connected with hydraulic pump 8, to water filling in hydraulic compartment 1, and pressure in hydraulic compartment 1 can be brought up to 0 ~ 4Mpa by hydraulic pump.Hydraulic pressure transducer 6 is installed in hydraulic compartment 1, for recording the pressure change in hydraulic compartment 1.Hydraulic compartment top is provided with fast pressure relief valve 5, suppresses in process in water filling, and fast pressure relief valve 5 is opened, and air in hydraulic compartment 1 can be discharged, ensure that water is full of whole hydraulic compartment 1 body, without trapped air in hydraulic compartment 1.In actual use, suppress until current from the ejection of 5 mouthfuls, fast pressure relief valve and closing switch after bubble-free, are now full water state in hydraulic compartment 1.
Fast pressure relief valve 5 is electric-controlled switch, can open fast.Probe 2 to be measured is put into hydraulic compartment 1, UNICOM's pressure transducer 6, and make probe 2 to be measured enter duty, record its output valve; Open fast pressure relief valve, water filling is suppressed, and treats that current are from the ejection of 5 mouthfuls, fast pressure relief valve, and bubble-free, immediately closing switch; Regulator solution press pump 8, makes to reach convenient pressure in hydraulic compartment 1; Keep this pressure, after the output valve of pressure transducer 6 and test probe 2 is stable, open fast pressure relief valve 5; Due to the incompressibility of water, while fast pressure relief valve 5 is opened, in hydraulic compartment 2, pressure can reduce rapidly, produces Pressure Step, is equivalent to treat probing 2 and is applied with a step signal.The output valve of pressure change procedure and probe in record hydraulic compartment 1.According to the output valve of Pressure Step signal and probe to be measured 2, carry out high order linear matching, just can calculate the transport function of test probe 2.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (5)
1. a confined pressure formula borehole stress and strain instrument transport function test macro, it is characterized in that, comprise hydraulic compartment, probe to be measured and hydraulic pressure transducer is provided with in described hydraulic compartment, described hydraulic compartment is connected with fast pressure relief valve, water inlet pipe and rising pipe, described water inlet pipe is provided with hydraulic pump and unidirectional stop valve, and described rising pipe is provided with flow control valve, and described probe to be measured is connected with data acquisition unit respectively by signal wire with hydraulic pressure transducer.
2. confined pressure formula borehole stress and strain instrument transport function test macro according to claim 1, it is characterized in that, described fast pressure relief valve is provided with electric-controlled switch and bore exports at the heavy caliber of more than 10mm.
3. confined pressure formula borehole stress and strain instrument transport function test macro according to claim 2, it is characterized in that, described fast pressure relief valve is placed in the top of hydraulic compartment.
4. confined pressure formula borehole stress and strain instrument transport function test macro according to claim 1, it is characterized in that, described water inlet pipe is connected with catch basin respectively with the lower end of rising pipe.
5. the confined pressure formula borehole stress and strain instrument transport function test macro according to any one of Claims 1-4, is characterized in that, this system utilizes the fireballing characteristic of release after the incompressible characteristic of liquid and liquid pressing, provides the step signal of sharp edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510944606.5A CN105352660B (en) | 2015-12-16 | 2015-12-16 | Confining pressure formula borehole stress and strain instrument transmission function tests system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510944606.5A CN105352660B (en) | 2015-12-16 | 2015-12-16 | Confining pressure formula borehole stress and strain instrument transmission function tests system |
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| CN105352660A true CN105352660A (en) | 2016-02-24 |
| CN105352660B CN105352660B (en) | 2018-08-28 |
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| CN201510944606.5A Active CN105352660B (en) | 2015-12-16 | 2015-12-16 | Confining pressure formula borehole stress and strain instrument transmission function tests system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872082A (en) * | 2017-04-28 | 2017-06-20 | 中国地震局地壳应力研究所 | A kind of body strain dynamic characteristic measuring instrument and measuring method |
| CN109667541A (en) * | 2018-12-06 | 2019-04-23 | 中煤科工集团西安研究院有限公司 | Dynamic equilibrium self-propelled water jet borehole test device and method under confining pressure state |
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| CN103266634A (en) * | 2013-01-09 | 2013-08-28 | 交通运输部公路科学研究所 | Determination method of bearing capacity of overlong bored pile |
| CN103728095A (en) * | 2014-01-10 | 2014-04-16 | 浙江大学 | Negative step force testing system |
| CN203672536U (en) * | 2014-01-10 | 2014-06-25 | 浙江大学 | Negative step force testing system |
| JP2015040776A (en) * | 2013-08-22 | 2015-03-02 | ニッタ株式会社 | Sensor sheet calibration device, and program used therefor |
| CN205300842U (en) * | 2015-12-16 | 2016-06-08 | 中国地震局地壳应力研究所 | Confined pressure formula drilling stress and strain appearance transfer function test system |
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2015
- 2015-12-16 CN CN201510944606.5A patent/CN105352660B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759420A (en) * | 2011-04-24 | 2012-10-31 | 山东大成电气有限公司 | Intelligent borehole stress sensor and meter calibration method thereof |
| CN103266634A (en) * | 2013-01-09 | 2013-08-28 | 交通运输部公路科学研究所 | Determination method of bearing capacity of overlong bored pile |
| JP2015040776A (en) * | 2013-08-22 | 2015-03-02 | ニッタ株式会社 | Sensor sheet calibration device, and program used therefor |
| CN103728095A (en) * | 2014-01-10 | 2014-04-16 | 浙江大学 | Negative step force testing system |
| CN203672536U (en) * | 2014-01-10 | 2014-06-25 | 浙江大学 | Negative step force testing system |
| CN205300842U (en) * | 2015-12-16 | 2016-06-08 | 中国地震局地壳应力研究所 | Confined pressure formula drilling stress and strain appearance transfer function test system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872082A (en) * | 2017-04-28 | 2017-06-20 | 中国地震局地壳应力研究所 | A kind of body strain dynamic characteristic measuring instrument and measuring method |
| CN109667541A (en) * | 2018-12-06 | 2019-04-23 | 中煤科工集团西安研究院有限公司 | Dynamic equilibrium self-propelled water jet borehole test device and method under confining pressure state |
| CN109667541B (en) * | 2018-12-06 | 2020-05-05 | 中煤科工集团西安研究院有限公司 | Dynamic balance self-propelled water jet drilling testing device and method under confining pressure state |
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| CN105352660B (en) | 2018-08-28 |
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Address after: 100085, Anning Road, Haidian District, Beijing, 1, Xisanqi Patentee after: National natural disaster prevention and Control Research Institute, Ministry of emergency management Address before: 100085, Anning Road, Haidian District, Beijing, 1, Xisanqi Patentee before: THE INSTITUTE OF CRUSTAL DYNAMICS, CHINA EARTHQUAKE ADMINISTRATION |
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