CN112781975A - Rock soaking-drying cycle mechanics experimental method - Google Patents
Rock soaking-drying cycle mechanics experimental method Download PDFInfo
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- CN112781975A CN112781975A CN202110020978.4A CN202110020978A CN112781975A CN 112781975 A CN112781975 A CN 112781975A CN 202110020978 A CN202110020978 A CN 202110020978A CN 112781975 A CN112781975 A CN 112781975A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0236—Other environments
- G01N2203/0242—With circulation of a fluid
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Abstract
The invention relates to a mechanical experiment method for a rock soaking-drying cycle, which comprises four steps of experiment box debugging, experiment table installation, sample mechanical loading and soaking-drying cycle: connecting a heat transfer pipe with a heat circulation system, connecting a liquid interaction pipe with a liquid circulation system, controlling liquid to be pumped into a pump outlet box, and adjusting the temperature of a heat extraction elbow; placing an experimental box in the center of a fixed base of the experimental machine, placing an experimental cushion block on an object bearing table in the box, then placing an experimental sample, and placing an upper cover plate; setting an experiment loading mode and a loading speed by using a computer control terminal, starting a hydraulic control system to control a hydraulic cylinder to work, and enabling an upper pressure head to penetrate through a central circular hole of an upper cover plate to perform a loading experiment; and pumping liquid into the box to enable the experimental sample to be in a soaking state, pumping the liquid out after the design time is reached, starting a heat circulation system to dry the experimental sample, and stopping the drying until the experimental requirement is reached.
Description
The technical field is as follows:
the invention relates to the field of indoor rock experiments, in particular to a rock soaking-drying cycle mechanics experiment method.
Background art:
with the rapid development of economy in China, the national demand for mineral resources is increasing day by day, and easily exploited resources are used up, so that the exploitation of large water mines with complex hydrogeological conditions is developed continuously for realizing the sustainable development of mining industry. The rock mass of the large water mine always exists in a certain underground water environment and is often in a water-saturated state, and the existence of water weakens the mechanical property and the stability of the rock mass. Meanwhile, in the construction and operation period of the geotechnical engineering, the combined action of underground water and load is often encountered, and the mechanical property of the rock mass under the action of the underground water and the load is one of the important factors influencing the long-term stability of the geotechnical engineering. Therefore, the damage and damage conditions of the rock under the water-containing and drying conditions or different stress paths and different stress stages of the rock under the soaking-drying cycle condition are researched, the precursor information of the water-containing rock from stability to instability to damage is searched, and the method has important significance for stability monitoring and disaster early warning of surrounding rocks in actual engineering.
However, the rock soaking-drying experimental method is few, and therefore, the invention provides the rock soaking-drying cyclic mechanical experimental method which utilizes the liquid circulating system and the heat circulating system to soak and dry the rock, and the operability of the soaking-drying cyclic mechanical experiment is greatly enriched by changing the soaking degree and the experimental cycle times of the experimental sample.
The invention content is as follows:
aiming at the defects in the prior art, the invention aims to provide a rock soaking-drying cycle mechanics experimental method.
The purpose of the invention can be realized by the following experimental method:
a mechanical experiment method for rock soaking-drying cycle specifically comprises four steps of experiment box debugging, experiment table installation, sample mechanical loading and soaking-drying cycle, and specifically comprises the following steps:
connecting an external heat transfer pipe of the experiment box with a heat circulation system, connecting a liquid interaction pipe with a liquid circulation system, starting the liquid circulation system to control liquid to be pumped into a pump-out box, and starting the heat circulation system to adjust the temperature of a heat discharge elbow;
placing the experiment box in the center of a fixed base of the experiment machine, placing a proper experiment cushion block on an object bearing table in the box, then placing an experiment sample, and placing an upper cover plate;
setting an experiment loading mode and a loading speed by using a computer control terminal, starting a hydraulic control system to control a hydraulic cylinder to work, and carrying out a loading experiment after an upper pressure head passes through a central circular hole of an upper cover plate and contacts with the upper end surface of an experiment sample;
and step four, pumping liquid into the box according to the experimental design to enable the experimental sample to be in a soaking state, pumping the liquid out after the design time is reached, starting a heat circulation system to dry the experimental sample, and stopping the drying until the experimental requirement is reached.
Further, the outer protective housing be thermal-insulated material, prevent the heat outdiffusion.
Further, the height of the object bearing platform exceeds the height of the liquid interaction pipe.
Further, the number of the experimental cushion blocks in the second step is determined by the height of the experimental sample.
Furthermore, the loading experiment in the third step can be designed into an experiment mode of uniaxial compression loading, constant pressure loading or cyclic loading and unloading.
Furthermore, the experimental sample soaking in the fourth step can be soaking at a certain height or soaking in a full sample.
Further, the soaking-drying cycle of the experimental sample in the fourth step can be one cycle or a plurality of cycles.
Drawings
In order to more clearly illustrate the experimental method of the present invention, the drawings used for the experimental method will be briefly described below.
FIG. 1 is a schematic structural diagram of an experimental method for implementing the soaking-drying cycle mechanics of rocks according to the invention.
In the figure: the device comprises a hydraulic cylinder 1, an experiment machine 2, a terminal controller 3, an upper cover plate 4, an outer protective shell 5, an inner protective shell 6, an upper pressure head 7, a heat extraction bent pipe 8, a material bearing table 9, an external heat transfer pipe 1, a liquid interaction pipe 11, a force bearing arm 12, an experiment sample 13, an experiment cushion block 14, a fixed base 15, a hydraulic control system 16, a heat circulation system 17, a liquid circulation system 18 and a computer control terminal 19.
Detailed Description
The method of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, a mechanical experiment method of a rock soaking-drying cycle specifically comprises four steps of experiment box debugging, experiment table installation, sample mechanical loading and soaking-drying cycle, and specifically comprises the following steps:
step one, connecting an external heat transfer pipe 10 of the experiment box with a heat circulation system 17, connecting a liquid interaction pipe 11 with a liquid circulation system 18, starting the liquid circulation system 18 to control liquid to be pumped into a pumping-out box, and starting the heat circulation system 17 to adjust the temperature of a heat extraction elbow 8;
secondly, placing the experiment box in the center of a fixed base 15 of the experiment machine 2, placing a proper experiment cushion block 14 on an object bearing table 9 in the box, then placing an experiment sample 13, and placing an upper cover plate 4;
setting an experiment loading mode and a loading speed by using the computer control terminal 19, starting the hydraulic control system 16 to control the hydraulic cylinder 1 to work, and carrying out a loading experiment after the upper pressure head 7 passes through the central circular hole of the upper cover plate 4 and contacts with the upper end surface of the experiment sample 13;
and step four, pumping liquid into the box according to the experimental design to enable the experimental sample 13 to be in a soaking state, pumping the liquid out after the design time is reached, starting the heat circulation system 17 to dry the experimental sample 13, and stopping the drying until the experimental requirement is reached.
Further, outer protective housing 5 for thermal-insulated material, prevent the heat outward diffusion.
Further, the height of the object bearing platform 9 exceeds the height of the liquid interaction pipe 11.
Further, the number of the experimental cushion blocks 14 in the second step is determined by the height of the experimental sample 13.
Furthermore, the loading experiment in the third step can be designed into an experiment mode of uniaxial compression loading, constant pressure loading or cyclic loading and unloading.
Further, the immersion of the experimental sample 13 in the fourth step may be a certain height immersion or a full sample immersion.
Further, the soaking-drying cycle of the experimental sample 13 in the fourth step can be one cycle or a plurality of cycles.
It should be understood, however, that the description herein of specific embodiments is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A mechanical experiment method for rock soaking-drying cycle specifically comprises four steps of experiment box debugging, experiment table installation, sample mechanical loading and soaking-drying cycle, and specifically comprises the following steps:
connecting an external heat transfer pipe of the experiment box with a heat circulation system, connecting a liquid interaction pipe with a liquid circulation system, starting the liquid circulation system to control liquid to be pumped into a pump-out box, and starting the heat circulation system to adjust the temperature of a heat discharge elbow;
placing the experiment box in the center of a fixed base of the experiment machine, placing a proper experiment cushion block on an object bearing table in the box, then placing an experiment sample, and placing an upper cover plate;
setting an experiment loading mode and a loading speed by using a computer control terminal, starting a hydraulic control system to control a hydraulic cylinder to work, and carrying out a loading experiment after an upper pressure head passes through a central circular hole of an upper cover plate and contacts with the upper end surface of an experiment sample;
and step four, pumping liquid into the box according to the experimental design to enable the experimental sample to be in a soaking state, pumping the liquid out after the design time is reached, starting a heat circulation system to dry the experimental sample, and stopping the drying until the experimental requirement is reached.
2. The mechanical experiment method for the soaking-drying cycle of the rock as claimed in claim 1, wherein the outer protective shell is made of a heat insulation material, so as to prevent heat from diffusing outwards.
3. The mechanical experiment method for the soaking-drying cycle of the rock according to claim 1, wherein the height of the object bearing platform exceeds the height of the liquid interaction pipe.
4. The method for performing mechanical experiments on the soaking-drying cycle of rocks according to claim 1, wherein the number of the experimental blocks in the second step is determined by the height of the experimental sample.
5. The mechanical experiment method of the soaking-drying cycle of the rock as claimed in claim 1, wherein the loading experiment in the third step can be designed as an experiment mode of uniaxial compression loading, constant pressure loading or cyclic loading and unloading.
6. The method for testing the mechanical properties of the soaked rock-dried cycle as claimed in claim 1, wherein the soaking of the test sample in the fourth step can be a certain height soaking or a full sample soaking.
7. The mechanical experiment method for the soaking-drying cycle of the rock according to the claim 1, wherein the soaking-drying cycle of the experiment sample in the fourth step can be one cycle or a plurality of cycles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110020978.4A CN112781975A (en) | 2021-01-06 | 2021-01-06 | Rock soaking-drying cycle mechanics experimental method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110020978.4A CN112781975A (en) | 2021-01-06 | 2021-01-06 | Rock soaking-drying cycle mechanics experimental method |
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| CN112781975A true CN112781975A (en) | 2021-05-11 |
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| CN202110020978.4A Pending CN112781975A (en) | 2021-01-06 | 2021-01-06 | Rock soaking-drying cycle mechanics experimental method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203216804U (en) * | 2013-01-15 | 2013-09-25 | 合肥工业大学 | Uniaxial rock compression creepmeter in dry-wet circulating process |
| CN106970200A (en) * | 2017-03-27 | 2017-07-21 | 安徽理工大学 | A kind of rock drying and watering cycle experimental provision of temperature-control pressure-control |
| CN110108580A (en) * | 2019-05-30 | 2019-08-09 | 三峡大学 | Measure the experimental rig and method of Rock And Soil infiltration creep coupling under stress and drying and watering cycle collective effect |
| CN209372598U (en) * | 2018-11-01 | 2019-09-10 | 山东科技大学 | Drying and watering cycle alternating temperature uniaxial compression test machine |
| US20200386661A1 (en) * | 2019-06-04 | 2020-12-10 | Zhejiang University | Corrosion-fatigue-coupled test method and device for steel bridge deck |
-
2021
- 2021-01-06 CN CN202110020978.4A patent/CN112781975A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203216804U (en) * | 2013-01-15 | 2013-09-25 | 合肥工业大学 | Uniaxial rock compression creepmeter in dry-wet circulating process |
| CN106970200A (en) * | 2017-03-27 | 2017-07-21 | 安徽理工大学 | A kind of rock drying and watering cycle experimental provision of temperature-control pressure-control |
| CN209372598U (en) * | 2018-11-01 | 2019-09-10 | 山东科技大学 | Drying and watering cycle alternating temperature uniaxial compression test machine |
| CN110108580A (en) * | 2019-05-30 | 2019-08-09 | 三峡大学 | Measure the experimental rig and method of Rock And Soil infiltration creep coupling under stress and drying and watering cycle collective effect |
| US20200386661A1 (en) * | 2019-06-04 | 2020-12-10 | Zhejiang University | Corrosion-fatigue-coupled test method and device for steel bridge deck |
Non-Patent Citations (1)
| Title |
|---|
| 唐小琳等: "饱水-失水循环作用下岩石劣化特性试验研究", 《水资源与水工程学报》 * |
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Application publication date: 20210511 |