CN218546351U - Gas-liquid two-phase saturated coal rock uniaxial loading device - Google Patents
Gas-liquid two-phase saturated coal rock uniaxial loading device Download PDFInfo
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- CN218546351U CN218546351U CN202222208114.8U CN202222208114U CN218546351U CN 218546351 U CN218546351 U CN 218546351U CN 202222208114 U CN202222208114 U CN 202222208114U CN 218546351 U CN218546351 U CN 218546351U
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- coal rock
- gas
- cavity
- liquid
- injection hole
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- 239000003245 coal Substances 0.000 title claims abstract description 70
- 239000011435 rock Substances 0.000 title claims abstract description 57
- 239000007788 liquid Substances 0.000 title claims abstract description 29
- 229920006395 saturated elastomer Polymers 0.000 title claims abstract description 19
- 238000002347 injection Methods 0.000 claims abstract description 31
- 239000007924 injection Substances 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims description 11
- 239000000725 suspension Substances 0.000 claims 3
- 238000012360 testing method Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 abstract description 2
- 230000000007 visual effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 108010066114 cabin-2 Proteins 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a gas-liquid double-phase saturated coal petrography unipolar loading device of coal petrography loading mechanical test technical field, loading device include single-shaft press, pump station, control by temperature change gas-liquid airtight storehouse and numerical control center, control by temperature change gas-liquid airtight storehouse includes the chassis, is equipped with gas injection hole, water filling hole on the chassis, and gas injection hole one side is equipped with the air pump of connection, and water filling hole one side is equipped with the water pump of connection, the utility model discloses a gas-liquid double-phase saturated coal petrography unipolar loading device, accessible vacuum pump, air pump, water pump, temperature-controlled pump carry out negative pressure evacuation, saturation and saturation to the coal petrography body of coal petrography cavity inside to can be according to experiment demand temperature regulation to utilize single-shaft press, realize the strength test of coal petrography at different saturated state systems. Meanwhile, the visual window can observe the damage form of the coal rock mass. The method overcomes the defect of complicated process in the existing means, and further optimizes the method for testing the strength of the coal rock mass in different saturation states.
Description
Technical Field
The utility model relates to a coal petrography loading mechanical test technical field specifically is a gas-liquid double-phase saturated coal petrography unipolar loading device.
Background
In recent years, with the development of mining technology towards deep parts, coal mines are easily affected by high air pressure, high water pressure and high ground temperature in the mining process, so that disastrous accidents such as rock burst, coal and gas outburst, water inrush from top and bottom plates and the like are caused, and therefore, the research on the change rule of the coal rock mass under the conditions of gas content, water content and temperature change on the strength is particularly important. However, in current laboratory research, the experimental device for carrying out gas-containing, water-containing and temperature-changing on coal rock mass is single and relatively complex, and a uniaxial compression test cannot be immediately carried out after the gas-containing and water-containing experimental device is carried out, and certain requirements are also provided for sealing of a sample. For this reason we propose a gas-liquid two-phase saturated coal rock uniaxial loading device to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a gas-liquid double-phase saturated coal petrography unipolar loading device to solve the problem of proposing among the above-mentioned background art.
In order to solve the technical problem, the utility model adopts the following technical scheme:
a gas-liquid two-phase saturated coal rock uniaxial loading device comprises a uniaxial press, a pump station, a temperature control gas-liquid closed bin and a numerical control center, wherein the temperature control gas-liquid closed bin comprises a chassis, a gas injection hole and a water injection hole are formed in the chassis, a connected gas pump is arranged on one side of the gas injection hole, and a connected water pump is arranged on one side of the water injection hole;
a welded coal rock base is arranged above the chassis, a surrounding temperature-variable cavity is arranged on the outer side of the coal rock cavity, a connected temperature sensor is arranged on the inner wall of the temperature-variable cavity, a fixedly connected air pressure sensor is also arranged on the inner wall of the coal rock cavity, visible windows are arranged on the coal rock cavity and the temperature-variable cavity, the coal rock cavity and the chassis are in threaded connection through sealing threads;
the press machine is characterized in that a press machine supporting column is fixedly connected to the upper portion of the press machine base, the press machine overhung roof is connected with the press machine base through the press machine supporting column, the press machine overhung roof can move on the press machine supporting column through adjusting hydraulic pressure, and a press machine pressure head is arranged below the press machine overhung roof.
Preferably, the gas injection hole and the water injection hole penetrate through the chassis and extend into the coal rock cavity.
Preferably, the outer wall of the temperature-variable cavity is provided with a temperature injection hole, and one side of the temperature injection hole is provided with a connected temperature control pump.
Preferably, a negative pressure air exhaust hole is formed in the top of the coal rock cavity, a vacuum pump is connected to one side of the negative pressure air exhaust hole, and the negative pressure air exhaust hole extends into the coal rock cavity.
Preferably, the central position of the top of the coal rock cavity is provided with a sensing pressure head which is fixedly connected with the coal rock cavity, a stop lever is welded on the sensing pressure head, and a sealing ring is arranged at the contact position of the sensing pressure head and the top of the coal rock cavity.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the utility model discloses a gas-liquid double-phase saturated coal petrography unipolar loading device, accessible vacuum pump, air pump, water pump, accuse temperature pump carry out negative pressure evacuation, full gas and full water to the inside coal petrography body of coal petrography cavity to can be according to experiment demand temperature regulation, and utilize single-shaft press, realize the strength test of coal petrography body at different saturated state systems. Meanwhile, the visual window can observe the damage form of the coal rock mass. The method overcomes the defect of complicated process in the existing means, and further optimizes the method for testing the strength of the coal rock mass in different saturation states.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is an overall system diagram of the present invention;
fig. 2 is a structure diagram of the temperature control gas-liquid closed bin of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Referring to fig. 1 to 2, a gas-liquid two-phase saturated coal rock single-shaft loading device comprises a single-shaft press 1, a pump station 3, a temperature control gas-liquid closed bin 2 and a numerical control center 4, wherein the temperature control gas-liquid closed bin 2 comprises a chassis 2-5, a gas injection hole 2-1 and a water injection hole 2-2 are arranged on the chassis 2-5, a connected gas pump 3-3 is arranged on one side of the gas injection hole 2-1, a connected water pump 3-4 is arranged on one side of the water injection hole 2-2, the gas injection hole 2-1 and the water injection hole 2-2 penetrate through the chassis 2-5 and extend into a coal rock cavity 2-11, a welded coal rock base 2-7 is arranged above the chassis 2-5, a surrounding temperature-variable cavity 2-3 is arranged on the outer side of the coal rock cavity 2-11, a connected temperature sensor 2-6 is arranged on the inner wall of the temperature variable cavity 2-3, a temperature-variable cavity 2-3 is provided with a temperature injection hole 2-9 on the outer wall, a connected temperature control pump 3 is arranged on one side of the temperature variable cavity 2-9, a coal rock cavity 2-11 is provided with a gas pressure sensor 2-10, a pressure sensor 2-10 is connected with a pressure sensing screw thread 2-3, a pressure head 2-10 connected with a pressure sensor 2-3, a pressure sensor 2-10 connected with a central pressure head 2-3, a pressure sensing screw thread 2-3 connected with a central pressure sensing screw thread 2-3, a stop lever 2-15 is welded on the sensing pressure head 2-12, a sealing ring 2-14 is arranged at the contact position of the sensing pressure head 2-12 and the top of the coal rock cavity 2-11, a press machine support 1-2 which is fixedly connected is arranged above the press machine base 1-1, the press machine suspended ceiling 1-4 is connected with the press machine base 1-1 through a press machine support column 1-2, the press machine suspended ceiling 1-4 can move on the press machine support column 1-2 through adjusting hydraulic pressure, and a press head 1-3 is arranged below the press machine suspended ceiling 1-4.
Coal rock masses 2-8 are placed on coal rock bases 2-7 in the temperature control gas-liquid closed bin 2, the pump station 3 carries out negative pressure vacuum pumping, gas saturation or water saturation and temperature change adjustment on the coal rock masses 2-8 in the temperature control gas-liquid closed bin 2 through the negative pressure pumping holes 2-10, the gas injection holes 2-1, the water injection holes 2-2 and the temperature injection holes 2-9, the single-shaft press 1 applies axial load to the coal rock masses 2-8 in the temperature control gas-liquid closed bin 2 through the sensing pressure head 2-12, the strength of the coal rock masses 2-8 in different saturation states can be measured, and all the operations are controlled by the numerical control center 4.
The working principle is as follows:
s1, placing 2-8 (50 mm multiplied by 100 mm) of the ground standard coal rock mass on 2-7 of a coal rock base.
S2, the coal rock cavity 2-11 and the temperature changing cavity 2-3 are in threaded connection with the chassis 2-5 through sealing threads 2-13, and the sealing performance of the sealing rings 2-14 and the sealing threads 2-13 is checked.
And S3, adjusting the height of the suspended ceiling 1-4 of the press machine, and placing the temperature control gas-liquid sealed cabin 2 on the press machine base 1-1.
S4, correspondingly connecting a temperature control pump 3-1, a vacuum pump 3-2, an air pump 3-3 and a water pump 3-4 with a temperature injection hole 2-9, a negative pressure air exhaust hole 2-10, an air injection hole 2-1 and a water injection hole 2-2.
And S5, according to the experimental scheme, sending instructions to a temperature control pump 3-1, a vacuum pump 3-2, an air pump 3-3 and a water pump 3-4 through a numerical control center 4 respectively to perform gas saturation or water saturation and temperature change regulation on the coal rock mass 2-8.
S6, after the coal rock mass reaches the saturated state in the experimental scheme, the numerical control center 4 controls the uniaxial press 1 to perform uniaxial compression testing on the coal rock mass 2-8 under different saturated states, and data are recorded on the numerical control center 4.
S7, after the test is finished, adjusting the height of the suspended ceiling 1-4 of the press, taking down the temperature control gas-liquid sealed bin 2, opening the sealing threads 2-13, taking out the crushed coal-rock mass 2-8, carrying out the next coal-rock mass 2-8 test, and repeating the steps S1-S6.
In the description of the present specification, reference to the description of "one embodiment," "an example," "a specific example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.
Claims (5)
1. The utility model provides a gas-liquid double-phase saturated coal petrography unipolar loading device, loading device includes single-shaft press (1), pump station (3), the storehouse (2) is closed to temperature control gas-liquid and numerical control center (4), its characterized in that, the storehouse (2) is closed to temperature control gas-liquid includes chassis (2-5), is equipped with gas injection hole (2-1), water injection hole (2-2) on chassis (2-5), and gas injection hole (2-1) one side is equipped with connected air pump (3-3), and water injection hole (2-2) one side is equipped with connected water pump (3-4):
a welded coal rock base (2-7) is arranged above the chassis (2-5), a surrounding variable temperature cavity (2-3) is arranged on the outer side of the coal rock cavity (2-11), a connected temperature sensor (2-6) is arranged on the inner wall of the variable temperature cavity (2-3), an air pressure sensor (2-4) fixedly connected with the inner wall of the coal rock cavity (2-11) is also arranged on the inner wall of the coal rock cavity (2-11), visible windows are arranged on the coal rock cavity (2-11) and the variable temperature cavity (2-3), the coal rock cavity (2-11) and the chassis (2-5) are in threaded connection through sealing threads (2-13);
the press machine supporting column (1-2) is fixedly connected with the upper portion of the press machine base (1-1), the press machine suspension roof (1-4) is connected with the press machine base (1-1) through the press machine supporting column (1-2), the press machine suspension roof (1-4) can move on the press machine supporting column (1-2) through adjusting hydraulic pressure, and the press machine pressure head (1-3) is arranged below the press machine suspension roof (1-4).
2. The gas-liquid two-phase saturated coal rock single-shaft loading device is characterized in that the gas injection hole (2-1) and the water injection hole (2-2) penetrate through the chassis (2-5) and extend into the coal rock cavity (2-11).
3. The gas-liquid two-phase saturated coal rock single-shaft loading device as claimed in claim 1, wherein the outer wall of the temperature changing cavity (2-3) is provided with a temperature injection hole (2-9), and one side of the temperature injection hole (2-9) is provided with a connected temperature control pump (3-1).
4. The gas-liquid two-phase saturated coal rock single-shaft loading device is characterized in that a negative pressure air suction hole (2-10) is formed in the top of the coal rock cavity (2-11), a vacuum pump (3-2) is connected to one side of the negative pressure air suction hole (2-10), and the negative pressure air suction hole (2-10) extends into the coal rock cavity (2-11).
5. The gas-liquid two-phase saturated coal rock single-shaft loading device as claimed in claim 1, wherein a sensing pressure head (2-12) fixedly connected with the top center of the coal rock cavity (2-11) is arranged at the top center of the coal rock cavity, a stop lever (2-15) is welded on the sensing pressure head (2-12), and a sealing ring (2-14) is arranged at the contact position of the sensing pressure head (2-12) and the top of the coal rock cavity (2-11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222208114.8U CN218546351U (en) | 2022-08-22 | 2022-08-22 | Gas-liquid two-phase saturated coal rock uniaxial loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222208114.8U CN218546351U (en) | 2022-08-22 | 2022-08-22 | Gas-liquid two-phase saturated coal rock uniaxial loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218546351U true CN218546351U (en) | 2023-02-28 |
Family
ID=85269905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222208114.8U Expired - Fee Related CN218546351U (en) | 2022-08-22 | 2022-08-22 | Gas-liquid two-phase saturated coal rock uniaxial loading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218546351U (en) |
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2022
- 2022-08-22 CN CN202222208114.8U patent/CN218546351U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20230228 |