CN108051540B - Rock damage in-situ measurement device and measurement method - Google Patents
Rock damage in-situ measurement device and measurement method Download PDFInfo
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- CN108051540B CN108051540B CN201711241053.2A CN201711241053A CN108051540B CN 108051540 B CN108051540 B CN 108051540B CN 201711241053 A CN201711241053 A CN 201711241053A CN 108051540 B CN108051540 B CN 108051540B
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- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/16—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using titration
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Abstract
The invention discloses a rock damage in-situ measuring device which comprises a telescopic support, wherein a titration bottle for containing titration liquid is arranged on the telescopic support, the titration bottle is connected with the water inlet end of a sucker body through a hose, a water-absorbing filling material is arranged in the sucker body, and a valve is arranged at the water inlet end of the sucker body or on the hose; in addition, the invention also discloses a corresponding measuring method, which can simply and efficiently carry out in-situ test on the rock sample and distinguish the damage degrees of different parts of the rock.
Description
Technical Field
The invention relates to the technical field of rock damage measurement, in particular to a rock damage in-situ measurement device and a rock damage in-situ measurement method.
Background
Many properties of rock, such as strength, water absorption, tragedness, freezing resistance, thermal conductivity, sound absorption, etc., are strongly related to the degree of density of the rock structure, and are closely related to the structural characteristics of the pores (including the size, connectivity, and distribution of the pores) in addition to the degree of porosity.
At present, modes such as ultrasonic detection and acoustic emission are mainly adopted for nondestructive detection of the rock sample, but the modes can only be measured in an indoor laboratory, equipment is complex, and the difference of the porosity of the rock sample cannot be reflected simply and intuitively. However, the rock is used as a substance with larger discrete type, the mode is not accurate, even great difference can occur, through ordinary single capillary titration, the infiltration rate difference of different parts of the same rock is great, the pore structure of the rock is not uniform, and therefore the infiltration rate has larger discrete type. Therefore, the infiltration rate of common single capillary titration reflects the damage degree of local micro-areas, and a multipoint test is needed for the uneven pore structure, which undoubtedly increases the workload of workers. Therefore, how to measure the damage degree of the rock more simply and efficiently in situ without damage on the rock sample site is a problem which needs to be solved at present.
Disclosure of Invention
The invention aims to overcome the defects and provide an in-situ rock damage measuring device and a measuring method, so that a rock sample can be simply and efficiently tested in situ and the damage degrees of different parts of a rock can be distinguished.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a rock damage normal position measuring device, includes telescopic bracket, the last bottle of titrating that titrates of dress of being equipped with of telescopic bracket, titrate the bottle and pass through the hose and be connected with the end of intaking of sucking disc body, this internal filling material that absorbs water that is equipped with of sucking disc, the sucking disc body is intake and is equipped with the valve on end or the hose.
Preferably, the sucker body is in a conical cavity or horn-shaped cavity structure.
Preferably, the water-absorbing filling material is a water-absorbing sponge or cotton material.
Preferably, the water inlet end of the sucker body is provided with a connecting pipe, and the hose is connected with the connecting pipe.
Preferably, the surface of the titration flask is provided with a liquid level scale mark or a volume scale mark.
Preferably, the telescopic support is further provided with an electronic scale, and the titration flask is arranged on the electronic scale.
Preferably, the outlet of the sucker body is further provided with a gauze layer, and the gauze layer limits the water absorption filling material in the sucker body.
In addition, the invention also provides a measuring method of the rock damage in-situ measuring device, which comprises the following steps:
step 1): selecting a sucker body according to the size of the titrimetric rock sample, arranging a water-absorbing filling material in the sucker body, assembling the sucker body, a hose and a titration bottle, and placing the titration bottle on a telescopic bracket;
step 2): closing the valve, and injecting a titration solution into the titration bottle;
step 3): fixing the sucker body on the surface of a tested rock sample, and after the sucker body is stably fixed, adjusting the height of the telescopic bracket to enable the height of the water inlet end and the height of the water outlet end of the hose to be consistent;
step 4): opening a valve and starting timing, recording scales on a titration bottle, and allowing a titration solution to flow through a water absorption filling material along a hose due to spontaneous seepage and suction of a porous medium generated by a rock sample, so that the titration solution titrates the rock sample under the shunting action of the water absorption filling material;
step 5): and after titration is finished, closing the valve, finishing timing, recording the change value of the titration liquid in the titration bottle, calculating the titration rate, and measuring the rock damage degree through the titration rate.
Preferably, a liquid level scale mark or a volume scale mark is arranged on the titration bottle, in the step 5), after titration is completed, the valve is closed, timing is finished, the liquid level difference or the volume difference of the titration liquid in the titration bottle is recorded, the titration rate is calculated, and the rock damage degree is measured through the titration rate.
Preferably, in the step 1), the titration flask is placed on an electronic scale connected with the top of the telescopic bracket; in the step 5), after titration is completed, the valve is closed, timing is finished, the weight difference of the titration solution in the titration bottle is recorded through the electronic scale, the titration rate is calculated, and the rock damage degree is measured through the titration rate.
The invention has the following beneficial effects:
1. the rock damage in-situ measuring device has the advantages of simple structure, low cost, convenient operation and high efficiency.
2. Compared with a common titration method, the contact between the sucker body and the rock sample surface in the device can enlarge the titration area, reflect the porosity of the rock mass in a certain area range to a greater extent, reduce uncertain errors caused by randomness of common titration and reduce measurement errors caused by non-uniform rock pore structures.
3. The former titration method is realized by single capillary titration, the infiltration rate of the former titration method reflects the damage degree of local micro-area, and the uneven pore structure needs to be tested at multiple points, which increases the workload of workers undoubtedly, but the device of the invention enlarges the titration area, forms a scheme similar to planar titration, and greatly reduces the workload of the workers.
4. Compared with a single capillary tube, the titration bottle has enough titration liquid to carry out long-time titration, and the consumption of the titration liquid can be rapidly and accurately determined through the liquid level difference or the volume difference of the titration liquid in the titration bottle or the weight change of an electronic scale.
5. This rock damage normal position measuring device converts the difficult rock damage degree of measuring in the engineering into the consumption of titrating the liquid in the titration flask, can directly distinguish the different damage degree of rock through the consumption of titrating the liquid in the same time quantum in the titration flask relatively.
6. The sucker body of the device can be disassembled, and sucker bodies with different calibers can be replaced, so that the damage of test rock samples in different areas can be measured.
7. The sucking disc body can directly adsorb on the cliff, can be used to the non-level to carry out titration test on the cliff, has enlarged the device application scope.
8. The rock damage in-situ measuring device is an easily-damaged self-balancing device, and can well reflect the difference of rock samples damaged in different degrees.
9. The rock damage in-situ measuring device can be used for in-situ damage analysis of rock and soil mass in large-scale geotechnical engineering on site, can be used for testing different stress states, and can be used for dividing and quantitatively analyzing the stressed and pulled areas of the rock and soil mass.
Drawings
FIG. 1 is a schematic structural diagram of an in-situ rock damage measuring device;
FIG. 2 is a schematic view of the connection structure of the suction cup body and the water-absorbing filling material thereof in FIG. 1;
in the figure, a telescopic bracket 1, a titration flask 2, a hose 3, a sucker body 4, a connecting pipe 4.1, a water absorption filling material 5, a valve 6, an electronic scale 7, a gauze layer 8 and a rock sample 9.
Detailed Description
The invention is described in further detail below with reference to the figures and specific embodiments.
As shown in fig. 1 and 2, a rock damage normal position measuring device, including telescopic bracket 1, be equipped with the bottle 2 of titrating of dress titration liquid on the telescopic bracket 1, titrate bottle 2 and pass through the end connection of intaking of hose 3 with sucking disc body 4, be equipped with water-absorbing filling material 5 in the sucking disc body 4, sucking disc body 4 is intake and is equipped with valve 6 on end or the hose 3.
Preferably, the sucker body 4 is a conical cavity or a horn-shaped cavity structure. The structure can effectively enlarge the titration area, thereby more effectively carrying out planar titration on the rock sample to be tested.
Preferably, the water-absorbing filling material 5 is a water-absorbing sponge or cotton material. Therefore, water can be stored by the water-absorbing sponge or cotton material, and then the planar titration can be carried out on the rock sample to be detected.
Preferably, the water inlet end of the sucker body 4 is provided with a connecting pipe 4.1, and the hose 3 is connected with the connecting pipe 4.1.
Preferably, the surface of the titration flask 2 is provided with a liquid level scale mark or a volume scale mark. Thus, the liquid level difference or the volume difference of the titration liquid in the titration flask 2 can be recorded through the liquid level scale line or the volume scale line, and the titration rate can be calculated.
Preferably, the telescopic support 1 is further provided with an electronic scale 7, and the titration flask 2 is arranged on the electronic scale 7. Thus, the weight difference of the titration liquid in the titration flask 2 can be recorded by the electronic scale 7, and the titration rate can be calculated.
Preferably, the outlet of the suction cup body 4 is further provided with a gauze layer 8, and the gauze layer 8 limits the water absorption filling material 5 in the suction cup body 4. Gauze layer 8 on the one hand can be spacing with filling material 5 that absorbs water, and on the other hand, gauze layer 8 sets up and can make titrate liquid further reposition of redundant personnel when flowing through from its gauze aperture at sucking disc body 4 exit to carry out the face-like titration to surveyed rock specimen better.
In addition, the embodiment also provides a measuring method of the rock damage in-situ measuring device, which comprises the following steps:
step 1): as shown in fig. 1, selecting a sucker body 4 according to the size of a rock sample 9, arranging a water-absorbing filling material 5 in the sucker body 4, assembling the sucker body 4, a hose 3 and a titration bottle 2, and placing the titration bottle 2 on a telescopic bracket 1; in this embodiment, telescopic bracket 1 is including locating the telescopic link on ground and the backup pad that is located the telescopic link top, titrates on bottle 2 or electronic scale 7 can place the backup pad, and the telescopic link can be an electric telescopic handle or manual telescopic link in addition, if manual telescopic link, can control flexible length through pushing up the nut.
Step 2): closing the valve 6, and injecting a titration solution into the titration flask 2;
step 3): fixing the sucker body 4 on the surface of a tested rock sample, and after the sucker body is stably fixed, adjusting the height of the telescopic bracket 1 to enable the height of the water inlet end and the height of the water outlet end of the hose 3 to be consistent; in this embodiment, with hose 3 intake end and the highly uniform back of highly transferring of play water end, its pressure differential is 0 basically, opens valve 6, and the siphonage can not take place for the titration liquid to avoid because the siphonage that the pressure differential produced titrates the experiment to the rock specimen and produce the influence, ensure in the follow-up experiment that the titration liquid flows into the rock specimen surface, just because the porous medium spontaneous suction effect that oozes that rock specimen self produced.
Step 4): opening the valve 6 and starting timing, recording the scales on the titration flask 2, and because of the spontaneous seepage and suction force of the porous medium generated by the rock sample, allowing the titration solution to flow through the water-absorbing filling material 5 along the hose 3, and titrating the rock sample by the titration solution under the shunting action of the water-absorbing filling material 5;
step 5): after titration is finished, the valve 6 is closed, timing is finished, the change value of the titration liquid in the titration bottle 2 is recorded, the titration rate is calculated, and the rock damage degree is measured through the titration rate.
Preferably, a liquid level scale mark or a volume scale mark is arranged on the titration bottle 2, in the step 5), after titration is completed, the valve 6 is closed, timing is finished, the liquid level difference or the volume difference of the titration liquid in the titration bottle 2 is recorded, the titration rate is calculated, and the rock damage degree is measured through the titration rate.
Preferably, in the step 1), the titration flask 2 is placed on an electronic scale 7 connected with the top of the telescopic bracket 1; in the step 5), after titration is completed, the valve 6 is closed, timing is finished, the weight difference of the titration solution in the titration bottle 2 is recorded through the electronic scale 7, the titration rate is calculated, and the rock damage degree is measured through the titration rate.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (8)
1. The utility model provides a rock damage normal position measuring device, includes telescopic bracket (1), its characterized in that: a titration bottle (2) containing titration liquid is arranged on the telescopic support (1), the titration bottle (2) is connected with the water inlet end of the sucker body (4) through a hose (3), a water-absorbing filling material (5) is arranged in the sucker body (4), and a valve (6) is arranged on the water inlet end of the sucker body (4) or the hose (3); the water-absorbing filling material (5) is a water-absorbing sponge or cotton material; the sucker body (4) is of a conical cavity or horn-shaped cavity structure.
2. The in situ rock damage measuring device of claim 1, wherein: the sucking disc body (4) end of intaking is equipped with takeover (4.1), hose (3) are connected with takeover (4.1).
3. The in situ rock damage measuring device of claim 1, wherein: the surface of the titration bottle (2) is provided with a liquid level scale mark or a volume scale mark.
4. The in situ rock damage measuring device of claim 1, wherein: the telescopic support (1) is further provided with an electronic scale (7), and the titration flask (2) is arranged on the electronic scale (7).
5. The in situ rock damage measuring device of claim 1, wherein: the sucking disc is characterized in that a gauze layer (8) is further arranged at the outlet of the sucking disc body (4), and the gauze layer (8) limits the water absorption filling material (5) in the sucking disc body (4).
6. A measuring method of a rock damage in-situ measuring device is characterized in that: it comprises the following steps:
step 1): selecting a sucker body (4) according to the size of the titrimetric rock sample, arranging a water-absorbing filling material (5) in the sucker body (4), assembling the sucker body (4), a hose (3) and a titration bottle (2), and placing the titration bottle (2) on a telescopic bracket (1);
step 2): closing the valve (6), and injecting a titration solution into the titration bottle (2);
step 3): fixing the sucker body (4) on the surface of a rock sample to be measured, and after the sucker body is stably fixed, adjusting the height of the telescopic bracket (1) to enable the height of the water inlet end and the height of the water outlet end of the hose (3) to be consistent;
step 4): opening the valve (6) and starting timing, recording the scales on the titration bottle (2), and because of the spontaneous seepage and suction of the porous medium generated by the rock sample, enabling the titration liquid to flow through the water-absorbing filling material (5) along the hose (3) and to titrate the rock sample through the shunting action of the water-absorbing filling material (5);
step 5): after titration is finished, the valve (6) is closed, timing is finished, the change value of the titration liquid in the titration bottle (2) is recorded, the titration rate is calculated, and the rock damage degree is measured through the titration rate.
7. The measurement method of the rock damage in-situ measurement device according to claim 6, wherein: the titration flask is characterized in that a liquid level scale mark or a volume scale mark is arranged on the titration flask (2), in the step 5), after titration is completed, the valve (6) is closed, timing is finished, the liquid level difference or the volume difference of a titration liquid in the titration flask (2) is recorded, the titration rate is calculated, and the rock damage degree is measured through the titration rate.
8. The measurement method of the rock damage in-situ measurement device according to claim 6, wherein: in the step 1), the titration flask (2) is placed on an electronic scale (7) connected with the top of the telescopic support (1); in the step 5), after titration is completed, the valve (6) is closed, timing is finished, the weight difference of a titration solution in the titration bottle (2) is recorded through the electronic scale (7), the titration rate is calculated, and the rock damage degree is measured through the titration rate.
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| CN201711241053.2A CN108051540B (en) | 2017-11-30 | 2017-11-30 | Rock damage in-situ measurement device and measurement method |
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| CN201711241053.2A CN108051540B (en) | 2017-11-30 | 2017-11-30 | Rock damage in-situ measurement device and measurement method |
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| CN108051540B true CN108051540B (en) | 2020-10-09 |
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| CN109856030B (en) * | 2019-02-15 | 2024-05-24 | 中国石油大学(北京) | Imbibition experimental device and method for determining imbibition extraction degree |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2411669Y (en) * | 2000-03-27 | 2000-12-27 | 冯基 | Practical infilatrating device |
| CN103460006A (en) * | 2011-03-31 | 2013-12-18 | 国立大学法人横浜国立大学 | Water absorption test method and water absorption test device for concrete surface |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512816B (en) * | 2013-10-15 | 2015-04-29 | 三峡大学 | Real-time measuring method for rock sample damage in circulation loading process |
| CN105319152A (en) * | 2014-07-25 | 2016-02-10 | 三峡大学 | Rock titration test table |
| CN204855321U (en) * | 2015-08-05 | 2015-12-09 | 三峡大学 | Test instrument is titrated to big pipe diameter |
| CN105424874A (en) * | 2016-01-01 | 2016-03-23 | 三峡大学 | Titration apparatus achieving multi-direction titration |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2411669Y (en) * | 2000-03-27 | 2000-12-27 | 冯基 | Practical infilatrating device |
| CN103460006A (en) * | 2011-03-31 | 2013-12-18 | 国立大学法人横浜国立大学 | Water absorption test method and water absorption test device for concrete surface |
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Effective date of registration: 20201207 Address after: 402760 No. 92 Donglin Avenue, Biquan Street, Bishan District, Chongqing (No. 52 Factory Building) Patentee after: Chongqing high tech Industry Research Institute Co.,Ltd. Address before: Unit 2414-2416, main building, no.371, Wushan Road, Tianhe District, Guangzhou City, Guangdong Province Patentee before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Effective date of registration: 20201207 Address after: Unit 2414-2416, main building, no.371, Wushan Road, Tianhe District, Guangzhou City, Guangdong Province Patentee after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Address before: 443002 No. 8, University Road, Yichang, Hubei Patentee before: CHINA THREE GORGES University |
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