CN115343202A - Water-inrush and sand-bursting test device under triaxial seepage of broken rock mass - Google Patents
Water-inrush and sand-bursting test device under triaxial seepage of broken rock mass Download PDFInfo
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- 238000012360 testing method Methods 0.000 title claims abstract description 55
- 239000011435 rock Substances 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 198
- 239000004576 sand Substances 0.000 claims abstract description 142
- 230000009172 bursting Effects 0.000 claims abstract description 34
- 238000002474 experimental method Methods 0.000 claims abstract description 28
- 238000003860 storage Methods 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 21
- 239000011521 glass Substances 0.000 claims description 19
- 244000035744 Hura crepitans Species 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 9
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- 230000007246 mechanism Effects 0.000 abstract description 11
- 238000011160 research Methods 0.000 abstract description 10
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 45
- 239000002689 soil Substances 0.000 description 6
- 230000003628 erosive effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
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Abstract
The utility model provides a broken rock body triaxial seepage flow is gushed water and is decreased husky test device down, include: the system comprises a triaxial seepage experiment system, a hydraulic system, a confining pressure system and a water burst and sand bursting amount statistical system; the triaxial seepage experiment system is respectively connected with the hydraulic system, the confining pressure system and the water burst and sand bursting amount statistical system; the triaxial seepage experiment system is used for carrying out triaxial seepage experiments; the hydraulic system is used for providing water pressure; the confining pressure system is used for providing confining pressure; and the water burst and sand burst amount statistical system is used for counting the water burst and sand burst amount. The water inrush and sand inrush test device under triaxial seepage of a broken rock body can meet the research on the aspect of a water inrush and sand inrush process mechanism.
Description
Technical Field
The utility model relates to an experimental facilities technical field especially relates to a broken rock mass triaxial seepage flow lower gushing water sand bursting test device.
Background
This section is intended to provide a background or context to the embodiments of the disclosure recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.
Water inrush and sand bursting refer to a geological disaster that in the production process of a mine, a crack or a fault is communicated with a near sand aquifer, and a water-sand mixed liquid flows into the underground to cause property loss and casualties. The water burst and sand bursting accidents in the water damage accidents mostly occur in shallow coal seams, a strong restriction effect is formed on the production of mines, and meanwhile, great adverse effects are caused on the local ecological environment.
Due to the characteristic of underground mining concealment, the mechanism and influencing factors of water burst and sand burst caused by coal mining are difficult to carry out on-site in-situ tests for observation and research, so that the indoor simulation test becomes an effective means for solving the problem. However, the existing water bursting and sand bursting test device cannot meet the research on the mechanism of the water bursting and sand bursting process.
Disclosure of Invention
In view of this, the utility model aims at providing a broken rock body triaxial seepage flow gushing water sand bursting test device down.
Based on above-mentioned purpose, this disclosure's exemplary embodiment provides a broken rock mass triaxial seepage flows down gushing water sand bursting test device, includes:
the system comprises a triaxial seepage experiment system, a hydraulic system, a confining pressure system and a water burst and sand bursting amount statistical system;
the triaxial seepage experiment system is respectively connected with the hydraulic system, the confining pressure system and the water burst sand bursting amount statistical system;
the triaxial seepage experiment system is used for carrying out triaxial seepage experiments;
the hydraulic system is used for providing water pressure;
the confining pressure system is used for providing confining pressure;
and the water burst sand bursting amount statistical system is used for counting the water burst sand bursting amount.
In some exemplary embodiments, the triaxial seepage experiment system comprises:
the device comprises an axial loading machine, an axial loading machine bracket, an exhaust pipe, an upper cover, a piston, a sand storage box, a test piece chamber, a test piece, a guide frame, a triaxial pressure chamber glass outer cover, a bottom plate, a base, an axial pressure sensor and a piston rod displacement meter;
the bottom plate sets up on the base, the upper cover sets up the top of bottom plate and with the bottom plate is parallel, triaxial cell glass dustcoat passes through cover on set up the recess with set up on the bottom plate with the upper cover with the bottom plate is connected, axial loading machine support sets up the top of upper cover, axial loading machine sets up the top of axial loading machine support, the below of axial loading machine is connected with the piston rod, the upper portion of piston rod is provided with axial pressure sensor with the piston rod displacement meter, be provided with the hole that supplies the piston rod to pass on the axial loading machine support, the blast pipe passes the blast pipe entry linkage that covers on setting inside the triaxial cell glass dustcoat, the upper end of blast pipe is provided with the fourth valve, cover on be provided with the confession the hole that the piston rod passed, the piston rod with be provided with first sealing washer between the upper cover.
In some exemplary embodiments, the hydraulic system includes:
the device comprises a water tank, a first pressure supply system, a first valve, a pressure water outflow channel and a water pressure gauge;
the first pressure supply system is connected with the water tank, the pressure water outflow channel is connected with the water tank, the first valve is arranged on the pressure water outflow channel, and the water pressure gauge is arranged on the pressure water outflow channel.
In some exemplary embodiments, the confining pressure system comprises:
the oil tank, the second pressure supply system, the second valve, the pressure oil outflow channel and the oil pressure gauge are arranged on the oil tank;
the second pressure supply system is connected with the oil tank, the pressure oil outflow channel is connected with the oil tank, the second valve is arranged on the pressure oil outflow channel, and the oil pressure gauge is arranged on the pressure oil outflow channel.
In some exemplary embodiments, the water inrush and sand inrush amount statistical system includes:
the device comprises a water sand box, an electronic balance, a water sand seepage channel, a third valve and a water sand flow meter;
the water sand box is placed on the electronic balance;
the water sand box is arranged at the outlet of the water sand seepage channel, the third valve is arranged on the water sand seepage channel, and the water sand flow meter is arranged on the water sand seepage channel.
In some exemplary embodiments, the upper cover is provided with a pressure water inlet, the pressure water outlet pipe passes through the pressure water inlet and is connected with the sand storage tank, and a first sealing ring is arranged between the pressure water outlet pipe and the upper cover.
In some exemplary embodiments, a confining pressure fluid inlet is disposed on the base plate, the pressure oil outlet pipe passes through the confining pressure fluid inlet and is connected to the inside of the triaxial pressure chamber glass housing, and a second sealing ring is disposed between the pressure oil outlet pipe and the base plate.
In some exemplary embodiments, a water and sand seepage passage inlet is arranged on the bottom plate, is positioned below the test piece chamber and is communicated with the interior of the test piece chamber, the water and sand seepage passage passes through the water and sand seepage passage inlet and is connected with the interior of the test piece chamber, and a second sealing ring is arranged between the water and sand seepage passage and the bottom plate.
In some exemplary embodiments, the sand storage box is disposed below the piston rod, a lower portion of the piston rod is provided with a screw hole structure, an upper portion of the sand storage box is provided with a thread structure, and the piston rod and the sand storage box are fixedly connected in a spiral manner.
In some exemplary embodiments, the sand storage box bottom plate is provided as a porous bottom plate structure, the test piece chamber is arranged below the sand storage box, the test piece chamber is fixedly arranged on the bottom plate through bolts and is positioned inside the glass cover of the three-axis pressure chamber, the test piece is placed inside the test piece chamber, the guide frame is fixedly arranged on the bottom plate through bolts, and the upper part of the guide frame is provided with a hole for the piston rod to pass through.
From the foregoing, it can be seen that the broken rock body triaxial seepage lower gushing water and sand bursting test device that this disclosed embodiment provided includes: the system comprises a triaxial seepage experiment system, a hydraulic system, a confining pressure system and a water burst and sand bursting amount statistical system; the triaxial seepage experiment system is respectively connected with the hydraulic system, the confining pressure system and the water burst and sand bursting amount statistical system; the triaxial seepage experiment system is used for carrying out triaxial seepage experiments; the hydraulic system is used for providing water pressure; the confining pressure system is used for providing confining pressure; and the water burst and sand burst amount statistical system is used for counting the water burst and sand burst amount. The device for testing water inrush and sand inrush under triaxial seepage of a broken rock body provided by the embodiment of the disclosure can meet the research on the aspect of a water inrush and sand inrush process mechanism.
Drawings
In order to clearly illustrate the technical solutions of the present disclosure or related technologies, the drawings used in the embodiments or related technologies description will be briefly introduced below, and obviously, the drawings in the following description are only embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a water-inrush and sand-bursting test machine device under triaxial seepage of a fractured rock mass according to an embodiment of the disclosure;
fig. 2 is a schematic structural diagram of a sandbox according to an embodiment of the present disclosure;
description of reference numerals:
1-hydraulic system, 1-water tank, 1-2-first pressure supply system, 1-3-first valve, 1-4-pressure water outflow channel, 1-5-water pressure gauge, 2-confining pressure system, 2-1-oil tank, 2-second pressure supply system, 2-3-second valve, 2-4-hydraulic oil outflow channel, 2-5-oil pressure gauge, 3-water burst sand amount statistical system, 3-1-water sand tank, 3-2-electronic balance, 3-water sand seepage channel, 3-4-third valve, 3-5-water sand flow meter, 4-axial loader, 5-axial loader support, 6-exhaust pipe, 7-fourth valve, 8-upper cover, 8-1-first sealing ring, 9-piston rod, 10-sand storage tank, 10-1-thread structure, 10-2-porous bottom plate, 10-3-bottom plate structure form, 11-water tank, 12-1-first sealing ring, 9-piston rod, 10-9-porous bottom plate, 9-piston rod, 10-displacement sensor, 9-piston rod, 15-displacement sensor, 15-piston rod, and 13-axial displacement sensor.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more clearly apparent, the principles and spirit of the present disclosure will be described below with reference to several exemplary embodiments. It is understood that these embodiments are given solely for the purpose of enabling those skilled in the art to better understand and to practice the present disclosure, and are not intended to limit the scope of the present disclosure in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be noted that technical terms or scientific terms used in the embodiments of the present disclosure should have a general meaning as understood by those having ordinary skill in the art to which the present disclosure belongs, unless otherwise defined. The use of "first," "second," and similar terms in the embodiments of the disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item preceding the word comprises the element or item listed after the word and its equivalent, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The principles and spirit of the present disclosure are explained in detail below with reference to several representative embodiments of the present disclosure.
As described in the background section, the water inrush and sand inrush test apparatus in the related art cannot satisfy the research on the mechanism of the water inrush and sand inrush process.
The inventors of the present disclosure found that the reason why the related art fails to satisfy the research on the mechanism of the water inrush and sand inrush process is:
in the related technology, for the erosion of stable seepage water to a soil sample, the ground stress is simulated by applying confining pressure and counter water pressure to the soil sample, the stable erosion effect is realized by a constant flow seepage system, and the soil sample erosion rule can be obtained by eroding the soil particle weight and the particle distribution curve subsequently. The seepage water enters through the channel arranged on the upper cover, so that the problem of uneven stress of the soil sample in the axial direction is ignored; on the other hand, the hydrodynamic seepage condition in the water inrush and sand inrush action is only considered, and the process of sand inrush is ignored, so that the research on the mechanism of the water inrush and sand inrush process cannot be met.
In the related art, aiming at the water inrush sand bursting simulation experiment under the lateral water sand seepage condition, an inner cylinder is formed by circular rings which are stacked together in sequence from top to bottom and are provided with lateral holes, the external water sand mixing device is used for realizing the proportional control of water and sand amount so as to simulate the simulation under different conditions, and the height position of a water inrush sand bursting port can be almost changed at will, so that the water inrush sand bursting rule is obtained. The method is completed under the condition of axial load, the condition of a triaxial test is not considered, and the problems that a mixture outlet of a water-sand mixing device is easy to block and the like exist, so that the research on the mechanism of a water bursting and sand bursting process can not be met.
In order to solve the above problem, the present disclosure provides a broken rock body triaxial seepage lower gushing water sand bursting test device, includes: the system comprises a triaxial seepage experiment system, a hydraulic system, a confining pressure system and a water burst and sand bursting amount statistical system; the triaxial seepage experiment system is respectively connected with the hydraulic system, the confining pressure system and the water burst and sand bursting amount statistical system; the triaxial seepage experiment system is used for carrying out triaxial seepage experiments; the hydraulic system is used for providing water pressure; the confining pressure system is used for providing confining pressure; and the water burst and sand burst amount statistical system is used for counting the water burst and sand burst amount. The device for testing water inrush and sand inrush under triaxial seepage of a broken rock body provided by the embodiment of the disclosure can meet the research on the aspect of a water inrush and sand inrush process mechanism.
Having described the general principles of the present disclosure, various non-limiting embodiments of the present disclosure are described in detail below.
Referring to fig. 1, the device for testing water inrush and sand inrush under triaxial seepage of a fractured rock body provided by the present disclosure includes a hydraulic system 1, a confining pressure system 2, a statistical system 3 for water inrush and sand inrush amount, and a triaxial seepage test system (not shown in the figure).
The hydraulic system 1 comprises a water tank 1-1, a first pressure supply system 1-2, a first valve 1-3, a pressure water outflow channel 1-4 and a water pressure gauge 1-5, the first pressure supply system 1-2 is arranged on the side of the water tank 1-1, the pressure water outflow channel 1-4 is arranged below the water tank 1-1, the first valve 1-3 is arranged at the upper end of the pressure water outflow channel 1-4, the water pressure gauge 1-5 is arranged on the pressure water outflow channel 1-4, the pressure water outflow channel 1-4 penetrates through a pressure water inlet arranged on the upper cover 8 to be connected with a sand storage tank 10, and a first sealing ring 8-1 is arranged between the pressure water outflow channel 1-4 and the upper cover 8.
The confining pressure system 2 comprises an oil tank 2-1, a pressure supply system 2-2, a second valve 2-3, a pressure oil outflow channel 2-4 and an oil pressure gauge 2-5, the pressure supply system 2-2 is arranged on the side edge of the oil tank 2-1, the pressure oil outflow channel 2-4 is arranged below the oil tank 2-1, the second valve 2-3 is arranged at the upper end of the pressure oil outflow channel 2-4, the oil pressure gauge 2-5 is arranged on the pressure oil outflow channel 2-4, the pressure oil outflow channel 2-4 penetrates through a confining pressure liquid inlet arranged on the bottom plate 15 to be connected with the interior of the glass housing 14 of the three-axis pressure chamber, and a second sealing ring 15-1 is arranged between the pressure oil outflow channel 2-4 and the bottom plate 15.
The water inrush and sand bursting amount statistical system 3 comprises a water sand box 3-1, an electronic balance 3-2, a water sand seepage passage 3-3, a third valve 3-4 and a water sand flow meter 3-5, wherein the water sand seepage passage 3-3 penetrates through an inlet of the water sand seepage passage arranged on a bottom plate 15 to be connected with the inside of a test piece chamber 11, a second sealing ring 15-1 is arranged between the water sand seepage passage 3-3 and the bottom plate 15, the upper end of the water sand seepage passage 3-3 is provided with the third valve 3-4, the lower part of the third valve 3-4 arranged at the upper end of the water sand seepage passage 3-3 is provided with the water sand flow meter 3-5, an outlet of the water sand seepage passage 3-3 is provided with the water sand box 3-1, and the water sand box 3-1 is placed on the electronic balance 3-4.
The triaxial seepage experiment system comprises an axial loader 4, an axial loader support 5, an exhaust pipe 6, an upper cover 8, a piston 9, a sand storage box 10, a test piece chamber 11, a test piece 12, a guide frame 13, a triaxial pressure chamber glass outer cover 14, a bottom plate 15, a base 16, an axial pressure sensor 17 and a piston rod displacement meter 18, wherein the bottom plate 15 is arranged on the base 16, the upper cover 8 is arranged right above the bottom plate 15 and is parallel to the bottom plate 15, grooves for arranging the glass outer cover are formed in the upper cover 8 and the bottom plate 15, the triaxial pressure chamber glass outer cover 14 is fixed on the bottom plate 15 through the grooves and bolts in the bottom plate 15, the upper cover 8 is fixed above the glass outer cover 14 through the grooves and the bolts in the upper cover 8, the axial loader support 5 is arranged above the upper cover 8, and the axial loader 4 is arranged above the axial loader support 5, the lower part of the axial loader 4 is connected with a piston rod 9, the upper part of the piston rod 9 is provided with an axial pressure sensor 17 and a piston rod displacement meter 18, a hole for the piston 9 to pass through is arranged on the axial loader support 5, the upper cover 8 is provided with an exhaust pipe inlet, the exhaust pipe 6 passes through an exhaust hole inlet arranged on the upper cover 8 and is connected with the inside of the triaxial pressure chamber, the upper end of the exhaust pipe 6 is provided with a fourth valve 7, the upper cover 8 is provided with a hole for the piston rod 9 to pass through, a first sealing ring 8-1 is arranged between the piston rod 9 and the upper cover 8, the upper cover 8 is provided with a pressure water inlet, a pressure water outlet pipe 1-4 passes through the pressure water inlet and is connected with a sand storage box 10, a first sealing ring 8-1 is arranged between the pressure water outlet pipe and the upper cover 8, and the pressure water outlet pipe 1-4 is externally connected with a hydraulic system 1.
Referring to fig. 2, a sand storage box 10 is arranged below a piston rod 9, the lower part of the piston rod 9 is provided with a screw hole structure, the upper part of the sand storage box 10 is provided with a thread structure, the piston rod 9 and the sand storage box 10 are fixed together in a spiral manner, the bottom plate of the sand storage box 10 is provided with a porous bottom plate structure, a sample chamber 11 is arranged right below the sand storage box, the sample chamber 11 is fixedly arranged on a bottom plate 15 through bolts and is positioned in a triaxial pressure chamber, a sample 12 is placed in the sample chamber 11, a guide frame 13 is fixedly arranged on the bottom plate 15 through bolts, the upper part of the guide frame 13 is provided with a hole for the piston rod 9 to pass through, a confining pressure fluid inlet is arranged on the bottom plate 15, a pressure fluid outlet 2-4 passes through the confining pressure fluid inlet arranged on the bottom plate 15 and is communicated with the triaxial pressure chamber, a second sealing ring 15-1 is arranged between the pressure fluid outlet 2-4 and the bottom plate 15, the pressure fluid outlet 2-4 is externally connected with a confining pressure system 2, the bottom plate 15 is provided with a water-sand seepage outlet and is positioned right below the sample chamber 11 and is communicated with the interior of the sample chamber 11, a water seepage system 3-3, the water seepage system is connected with the second sealing ring 15, and a water seepage system 15, and a water seepage outlet arranged on the bottom plate 15 seepage system, and a water seepage system for counting is arranged between the water seepage 3-15.
The application method of the water and sand inrush testing machine under the triaxial seepage of the fractured rock mass further provided by the disclosure comprises the following steps:
step one, assembling a three-axis water-inrush sand-bursting test system of a fractured rock mass.
1. The method comprises the steps of placing a base 16 on a firm support or a flat ground, fixing a base plate 15 on the base 16 by using bolts according to experiment requirements, arranging a pressure oil output channel 2-4 through a confining pressure liquid inlet arranged on the base plate 15, conducting the pressure oil output channel to the interior of a three-axis pressure chamber, arranging a second sealing ring 15-1 between the pressure oil output channel 2-4 and the base plate 15, fixing a test piece chamber 11 on the base plate 15 by using bolts, arranging a water and sand seepage channel 3-3 through a water and sand seepage outlet arranged on the base plate 15, arranging the second sealing ring 15-1 between the water and sand seepage channel 3-3 and the base plate 15, and fixing a guide frame 13 on the base plate 15 by using bolts.
2. The method comprises the steps of slowly placing a broken rock mass test piece 12 into a test piece chamber 11, placing a glass outer cover 14 into a groove formed in a bottom plate 15 and fixing the glass outer cover by bolts, fixing an upper cover 8 above a triaxial pressure chamber glass outer cover 14 by the groove formed in the upper cover 8 and fixing the glass outer cover by bolts, arranging an exhaust pipe 6 through an exhaust hole inlet formed in the upper cover 8, arranging a fourth valve 7 on the upper portion of the exhaust pipe 6, arranging a pressure water outlet channel 1-4 through a pressure water inlet formed in the upper cover 8, arranging a first sealing ring 8-1 between the pressure water outlet channel 1-4 and the upper cover 8, fixing an axial loader support 5 on the upper cover 8 by bolts, arranging an axial loader 4 on the axial loader support 5, connecting a piston rod 9 below the axial loader 4 through a hole formed in the axial loader support 5, arranging an axial pressure sensor 17 and a piston rod displacement meter 18 on the upper portion of the piston rod 9, filling a sand storage box 10 with a sand sample configured according to certain particle size, spirally arranging the sand storage box 10 on the lower portion of the piston rod 9, placing the piston rod in the lower portion of the piston rod 9, placing the piston rod into a porous sealing ring through the hole formed in the upper portion of the upper cover 8 of the triaxial pressure chamber 8 and contacting the piston rod chamber 11, and placing the piston rod guide base plate 11, and placing the piston rod on the piston rod 11, and placing the piston rod guide base plate 11, and placing the piston rod guide plate 11.
3. The pressure water outflow channel 1-4 is connected below the water tank 1-1, the first pressure supply system 1-2 is arranged on the side edge of the water tank 1-1, the first valve 1-3 is arranged at the outlet of the water tank 1-1 of the pressure water outflow channel 1-4, and the water pressure gauge 1-5 is arranged on the pressure water outflow channel 1-4.
4. The pressure oil outflow channel 2-4 is connected below the oil tank 2-1, the pressure supply system 2-2 is arranged on the side edge of the oil tank 2-1, the second valve 2-3 is arranged at the outlet of the oil tank 2-1 of the pressure oil outflow channel 2-4, and the oil pressure gauge 2-5 is arranged on the pressure oil outflow channel 2-4.
5. A third valve 3-4 is arranged at the upper part of the water and sand seepage passage 3-3, a water and sand flow meter 3-5 is arranged on the water and sand seepage passage 3-3 and is positioned below the third valve 3-4, a water and sand box 3-1 is arranged at the outlet of the water and sand seepage passage 3-3, and the water and sand box 3-1 is placed on an electronic balance 3-2.
And step two, loading confining pressure with pressure a on the broken rock mass test piece.
1. And closing a second valve 2-3 arranged on the pressure oil outflow channel 2-4, injecting a certain amount of oil into the oil tank 2-1, starting the pressure loading pressure a of the oil in the oil tank 2-1 supplied by the pressure supply system 2-2, and opening a fourth valve 7 arranged at the upper part of the exhaust hole 6.
2. And opening the second valve 2-3 to fill the pressure oil in the triaxial pressure chamber, recording the oil pressure through the oil pressure gauge 2-5, closing the pressure supply system 2-2 and closing the second valve 2-3 when the triaxial pressure chamber is filled with the pressure oil and the exhaust hole 6 slightly leaks the oil outwards, and simultaneously closing the fourth valve 7 at the upper part of the exhaust hole 6.
And step three, loading axial pressure with the pressure b to the broken rock mass test piece.
Starting the axial loading machine 4 to load axial pressure with pressure b on the test piece 12 through the piston rod 9 and the sand storage box, recording axial force through an axial pressure sensor 17 arranged at the upper part of the piston rod 9, and recording displacement of the piston rod through a piston rod displacement meter arranged at the upper part of the piston rod 9.
And step four, performing a three-axis seepage test on the fractured rock mass.
Closing a first valve 1-3 arranged on a pressure water outlet channel 1-4, injecting a certain amount of water into a water tank 1-1, starting a water loading pressure c in a water supply tank 1-1 of a first pressure supply system 1-2, and opening a third valve 3-4 arranged on a water sand seepage channel 3-3.
Opening the first valve 1-3, recording water pressure through a water pressure gauge 1-5, at the beginning of water injection, no liquid flows out from the water-sand seepage outlet 3-3, after water injection for a period of time, when a water-sand mixture flows out from the outlet of the water-sand seepage passage 3-3, the sand in the sand storage box 10 is proved to be saturated at the moment, recording the reading of the water-sand flow meter 3-5, and simultaneously recording the reading of the electronic balance 3-2 to obtain the water-sand seepage flow.
Step five, analyzing and processing test results
And analyzing the triaxial seepage rule and mechanism of the fractured rock according to the data obtained by the test.
From the aforesaid, the broken rock body triaxial seepage lower gushing water of the embodiment of this disclosure shows husky test device, includes: the system comprises a triaxial seepage experiment system, a hydraulic system, a confining pressure system and a water burst and sand bursting amount statistical system; the triaxial seepage experiment system is respectively connected with the hydraulic system, the confining pressure system and the water burst and sand bursting amount statistical system; the triaxial seepage experiment system is used for carrying out triaxial seepage experiments; the hydraulic system is used for providing water pressure; the confining pressure system is used for providing confining pressure; and the water burst and sand burst amount statistical system is used for counting the water burst and sand burst amount. The water inrush and sand bursting test device under the triaxial seepage of the broken rock body provided by the embodiment of the disclosure can meet the research on the aspect of the mechanism of the water inrush and sand bursting process.
Specifically, this disclosure has considered the uneven problem of atress in the soil sample axial direction, has considered this process of bursting sand to consider the triaxial test condition, and do not have the mixture export of water sand mixing arrangement and easily receive the jam scheduling problem.
It should be noted that the above describes some embodiments of the disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments described above and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
Further, while the operations of the disclosed methods are depicted in the drawings in a particular order, this does not require or imply that these operations must be performed in this particular order, or that all of the illustrated operations must be performed, to achieve desirable results. Rather, the steps depicted in the flowcharts may change the order of execution. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions.
Use of the verb "comprise", "comprise" and its conjugations does not exclude the presence of elements or steps other than those stated in a claim. The article "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.
While the spirit and principles of the present disclosure have been described with reference to several particular embodiments, it is to be understood that the present disclosure is not limited to the particular embodiments disclosed, nor is the division of aspects, which is for convenience only as the features in such aspects may not be combined to benefit. The disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.
Claims (10)
1. The utility model provides a broken rock body triaxial seepage flow is gushed water and is broken husky test device down which characterized in that includes:
the system comprises a triaxial seepage experiment system, a hydraulic system, a confining pressure system and a water burst and sand bursting amount statistical system;
the triaxial seepage experiment system is respectively connected with the hydraulic system, the confining pressure system and the water burst sand bursting amount statistical system;
the triaxial seepage experiment system is used for carrying out triaxial seepage experiments;
the hydraulic system is used for providing water pressure;
the confining pressure system is used for providing confining pressure;
and the water burst and sand burst amount statistical system is used for counting the water burst and sand burst amount.
2. The apparatus of claim 1, wherein the triaxial seepage experiment system comprises:
the device comprises an axial loading machine, an axial loading machine bracket, an exhaust pipe, an upper cover, a piston, a sand storage box, a test piece chamber, a test piece, a guide frame, a triaxial pressure chamber glass outer cover, a bottom plate, a base, an axial pressure sensor and a piston rod displacement meter;
the bottom plate sets up on the base, the upper cover sets up the top of bottom plate and with the bottom plate is parallel, triaxial cell glass dustcoat passes through cover on set up the recess with set up on the bottom plate with the upper cover with the bottom plate is connected, axial loading machine support sets up the top of upper cover, axial loading machine sets up the top of axial loading machine support, the below of axial loading machine is connected with the piston rod, the upper portion of piston rod is provided with axial pressure sensor with the piston rod displacement meter, be provided with the hole that supplies the piston rod to pass on the axial loading machine support, the blast pipe passes the blast pipe entry linkage that covers on setting inside the triaxial cell glass dustcoat, the upper end of blast pipe is provided with the fourth valve, cover on be provided with the confession the hole that the piston rod passed, the piston rod with be provided with first sealing washer between the upper cover.
3. The apparatus of claim 2, wherein the hydraulic system comprises:
the device comprises a water tank, a first pressure supply system, a first valve, a pressure water outflow channel and a water pressure gauge;
the first pressure supply system is connected with the water tank, the pressure water outflow channel is connected with the water tank, the first valve is arranged on the pressure water outflow channel, and the water pressure gauge is arranged on the pressure water outflow channel.
4. The apparatus of claim 2, wherein the confining pressure system comprises:
the oil tank, the second pressure supply system, the second valve, the pressure oil outflow channel and the oil pressure gauge are arranged on the oil tank;
the second pressure supply system is connected with the oil tank, the pressure oil outflow channel is connected with the oil tank, the second valve is arranged on the pressure oil outflow channel, and the oil pressure gauge is arranged on the pressure oil outflow channel.
5. The apparatus of claim 2, wherein the water inrush and sand inrush amount statistical system comprises:
the system comprises a water sand box, an electronic balance, a water sand seepage channel, a third valve and a water sand flowmeter;
the water sand box is placed on the electronic balance;
the water sand box is arranged at the outlet of the water sand seepage passage, the third valve is arranged on the water sand seepage passage, and the water sand flow meter is arranged on the water sand seepage passage.
6. The device according to claim 3, characterized in that the upper cover is provided with a pressure water inlet, the pressure water outlet pipe passes through the pressure water inlet to be connected with the sand storage tank, and a first sealing ring is arranged between the pressure water outlet pipe and the upper cover.
7. The device of claim 4, wherein the bottom plate is provided with a confining pressure fluid inlet, the pressure oil outlet pipe passes through the confining pressure fluid inlet and is connected with the interior of the triaxial pressure chamber glass housing, and a second sealing ring is arranged between the pressure oil outlet pipe and the bottom plate.
8. The device as claimed in claim 5, wherein the bottom plate is provided with a water and sand seepage passage inlet and is positioned below the test piece chamber and communicated with the interior of the test piece chamber, the water and sand seepage passage passes through the water and sand seepage passage inlet and is connected with the interior of the test piece chamber, and a second sealing ring is arranged between the water and sand seepage passage and the bottom plate.
9. The device as claimed in claim 2, wherein the sand storage box is arranged below the piston rod, the lower part of the piston rod is provided with a screw hole structure, the upper part of the sand storage box is provided with a thread structure, and the piston rod and the sand storage box are fixedly connected in a spiral mode.
10. The device as claimed in claim 2, wherein the sand storage box bottom plate is a porous bottom plate structure, the test piece chamber is arranged below the sand storage box, the test piece chamber is fixedly arranged on the bottom plate through bolts and is positioned inside the glass housing of the three-axis pressure chamber, the test piece is placed inside the test piece chamber, the guide frame is fixedly arranged on the bottom plate through bolts, and the upper part of the guide frame is provided with a hole for the piston rod to pass through.
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| CN202210731189.6A CN115343202A (en) | 2022-06-24 | 2022-06-24 | Water-inrush and sand-bursting test device under triaxial seepage of broken rock mass |
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| CN202210731189.6A CN115343202A (en) | 2022-06-24 | 2022-06-24 | Water-inrush and sand-bursting test device under triaxial seepage of broken rock mass |
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