CN215492891U - Water-rich filling type fracture zone water-inrush mud-inrush mechanism test device - Google Patents

Water-rich filling type fracture zone water-inrush mud-inrush mechanism test device Download PDF

Info

Publication number
CN215492891U
CN215492891U CN202121710432.3U CN202121710432U CN215492891U CN 215492891 U CN215492891 U CN 215492891U CN 202121710432 U CN202121710432 U CN 202121710432U CN 215492891 U CN215492891 U CN 215492891U
Authority
CN
China
Prior art keywords
water
inrush
box body
mud
upper cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202121710432.3U
Other languages
Chinese (zh)
Inventor
杨艳娜
范时杰
张蕊
许模
曾宪明
丁茂林
黄士光
曾祥福
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu Univeristy of Technology
Original Assignee
Chengdu Univeristy of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chengdu Univeristy of Technology filed Critical Chengdu Univeristy of Technology
Priority to CN202121710432.3U priority Critical patent/CN215492891U/en
Application granted granted Critical
Publication of CN215492891U publication Critical patent/CN215492891U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a water-rich filling type fracture zone water-inrush and mud-inrush mechanism testing device, which comprises a testing device main body, an information monitoring device, an information acquisition device and a pressure loading device, wherein the testing device main body comprises a hydraulic cylinder, an upper cover plate, a pressing plate and a box body, the hydraulic cylinder is arranged on the top surface of the upper cover plate, the upper cover plate is arranged at the upper end of the box body, the upper cover plate is provided with a water filling port and a hole for extending a piston of a hydraulic cylinder, the bottom surface of the upper cover plate is fixedly connected with a guide post, the pressing plate is sleeved on the guide post in a vertically sliding manner and is fixedly connected with the lower end of the piston of the hydraulic cylinder extending out of the upper cover plate, and the pressing plate is provided with a plurality of through holes for water to pass through; filling media are filled in the box body in a layered mode, an excavation opening is formed in the side wall of the box body, an excavation head with an excavation channel and a port sealing cover is connected to the excavation opening, and a water outlet is formed in the bottom of the box body. The method is simple to operate, has good sealing performance, and can be used for water inrush and mud inrush tests of various water-rich filling type fracture structures which are excavated and not excavated.

Description

Water-rich filling type fracture zone water-inrush mud-inrush mechanism test device
Technical Field
The utility model belongs to the field of water inrush and mud inrush test devices, and particularly relates to a water-rich filling type fracture zone water inrush and mud inrush mechanism test device.
Background
With the rapid development of economic construction in southwest areas, infrastructure such as traffic networks, water conservancy and hydropower are continuously perfected, more and more deep-buried tunnel projects appear, the geological conditions in southwest mountainous areas are complex, the deep-buried tunnel projects are threatened by high confined water, high ground stress and fracture structures, and water inrush and mud burst disasters are frequently encountered, so that great influence is brought to engineering construction and property safety of people. Corresponding test instrument devices are required to be equipped for exploring the catastrophe evolution mechanism of water burst and mud burst of the tunnel under the control of high water pressure, high ground stress and fracture structure. The existing test equipment is mainly divided into two types: one is a water-inrush mud-inrush test device for simulating a tunnel excavation process, wherein a large-scale test device has complex test material manufacturing process and inconvenient test operation; most of small-scale test devices can only simulate water inrush and mud inrush of tunnels under low water pressure and cannot completely meet complex geological characteristics of southwest mountainous areas; the other type is a penetration failure test device of a rock sample, although the test device can simulate the failure process of the rock under high water pressure, the test only aims at the rock sample, and the excavation process of a tunnel cannot be considered.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a small-scale water-rich filling type fracture and fracture zone water inrush and mud inrush mechanism test device which can simulate high water pressure and high ground stress action and is simple and convenient to operate, aiming at overcoming the defects of the prior art.
The purpose of the utility model is realized by the following technical scheme:
a water-rich filling type fracture zone water-inrush mud-inrush mechanism test device comprises a test device main body, an information monitoring device, an information acquisition device and a pressure loading device, wherein the information monitoring device is used for monitoring and recording the change rule including but not limited to pore water pressure in the fracture zone seepage process; the information acquisition device is used for acquiring the pore water pressure, the water inrush amount and the mud inrush amount in the process of the fractured zone seepage; the pressure loading device is used for providing a pressure loading mode for the test device main body;
the testing device comprises a testing device body and a testing device body, wherein the testing device body comprises a hydraulic cylinder, an upper cover plate, a pressing plate and a box body, the hydraulic cylinder is installed on the top surface of the upper cover plate through a fixed seat, the upper cover plate is installed at the upper end of the box body, a water filling port and a hole for a piston of the hydraulic cylinder to extend out are formed in the upper cover plate, a guide post is fixedly connected to the bottom surface of the upper cover plate, the pressing plate is sleeved on the guide post in a vertically sliding mode and is fixedly connected with the lower end of the piston of the hydraulic cylinder extending out of the upper cover plate, and a plurality of through holes for water to pass through are formed in the pressing plate; filling media are filled in the box body in a layered mode, an excavation opening is formed in the side wall of the box body, an excavation head with an excavation channel and a port sealing cover is connected to the excavation opening, and a water outlet is formed in the bottom of the box body;
the information monitoring device comprises a pore water pressure sensor which is buried in the filling medium and is connected with the information acquisition device through a cable.
Furthermore, the information acquisition device comprises an information acquisition module, a computer, an electronic scale and a collection container, wherein the information acquisition module is simultaneously connected with the computer and the pore water pressure sensor and used for acquiring pore water pressure change data in the test process, the electronic scale and the collection container placed on the electronic scale are arranged below a water outlet of the box body and used for acquiring the mass of the muddy water mixture in the test process and obtaining the mass of water inrush (m) after separating the mixtureW) Mass of mud outburst (m)n),
Wherein Q iswThe water inrush is measured; qnThe amount of protruding mud is shown; rhowIs the density of water; rhonThe packing medium density was tested.
Before the test is started, placing the collecting container on an electronic scale for weighing, resetting and correcting; in the test process, the mud-water mixture falls into a collection container, the reading of the electronic scale is recorded every 10s, and the mixture in the barrel is separated in time, and data is recorded, processed and analyzed.
Furthermore, the pressure loading device comprises a water tank and a water pump, the water tank and the water pump provide a fixed pressure loading mode for the test device main body, and the water tank, the water pump and the hydraulic cylinder combine to provide a variable pressure loading mode for the test device main body.
Further, the hydraulic cylinder is pressurized by a manual pump.
Furthermore, one side of the box body is provided with a visual window.
Furthermore, the end face of the bottom of the box body is gradually inclined downwards from the edge to the center, and the center position is the lowest, so that water can conveniently flow out from the water outlet.
Further, the bottom of the box body is provided with a water-permeable felt.
The constant-pressure water pump can simulate high water pressure and can realize good pressure stabilizing effect; the hydraulic pump is adopted to vertically pressurize, so that the ground stress of the real situation can be simulated; the utility model has simple operation and good sealing performance, and can be used for water inrush and mud inrush tests of various water-rich filling type fracture structures for excavation and non-excavation.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic structural view of the main body of the test apparatus.
The labels in the figure are: 1-hydraulic cylinder 2-fixing seat 3-high-strength bolt 4-water filling port 5-upper cover plate 6-guide post 7-pressing plate 8-box body 9-visible window 10-water outlet 11-excavation head 12-constant pressure water pump 13-water tank 14-information acquisition module 15-computer 16-collection container 17-electronic scale 18-pore water pressure sensor 19-permeable felt
Detailed Description
As shown in fig. 1 to 2, the water-rich filling type fracture zone water-inrush and mud-inrush mechanism testing device provided by this embodiment includes a testing device main body, a constant pressure water pump 12, a water tank 13, an information acquisition module 14, a computer 15, and a pore water pressure sensor 18, where the information acquisition module 14 is connected to the computer 15, the pore water pressure sensor 18 is embedded in a filling medium and connected to the information acquisition module 14 through a cable, and the constant pressure water pump 12 is connected to the water tank 13 and communicated to a water injection port 4 on an upper cover plate 5 through a high pressure water pipe.
The testing device main part includes pneumatic cylinder 1, fixing base 2, high strength bolt 3, upper cover plate 5, guide post 6, clamp plate 7 and box 8, and the filling medium layering dress is in box 8, and pneumatic cylinder 1 passes through fixing base 2 and installs on the top surface of upper cover plate 5, and pneumatic cylinder 1 passes through the manual pump pressurization. The upper cover plate 5 is arranged at the upper end of the box body 8 through a plurality of high-strength bolts 3, a water injection port 4 and a hole for extending a piston of the hydraulic cylinder 1 are arranged on the upper cover plate 5, a guide post 6 is fixedly connected on the bottom surface of the upper cover plate 5, a pressing plate 7 is sleeved on the guide post 6 in a vertically sliding manner and is fixedly connected with the lower end of the hydraulic cylinder piston extending out of the upper cover plate 5, a plurality of through holes for passing water are arranged on the pressing plate 7, an excavation port is arranged on the side wall of the box body 8, an excavation head 11 with an excavation channel and a port sealing cover is connected at the excavation port, a cable of a pore water pressure sensor 18 passes through the excavation head 11 and is connected with an information acquisition module 14, a water outlet 10 is arranged on the bottom surface of the box body 8, a flowmeter is arranged at the water outlet 10, a collection container 16 and an electronic scale 17 are arranged below the water outlet 10, the collection container 16 is arranged on the electronic scale 17, and the mud-water mixture collected by the collection container 16 is separated, obtainMass of water inrush (m)W) Mass of mud outburst (m)n),
Wherein Q iswThe water inrush is measured; qnThe amount of protruding mud is shown; rhowIs the density of water; rhonThe packing medium density was tested.
The constant pressure water pump 12 and the water tank 13 can provide a constant pressure loading mode for the main body of the test device, and the hydraulic cylinder 1, the constant pressure water pump 12 and the water tank 13 can provide a variable pressure loading mode for the main body of the test device.
In this embodiment, a viewing window 9 is provided on one side surface of the box body 8, and the end surface of the bottom of the box body 8 is gradually inclined downwards from the edge to the center, and the center position is the lowest, so that water can conveniently flow out from the water outlet 10. The bottom of the box body 8 is provided with a water permeable felt 19, the water permeable felt 19 allows water flow and particles to pass through, and the framework cannot pass through.
The test steps of the utility model are as follows:
(1) setting the width of a fault band, placing a partition plate into the box body 8, filling media of similar materials into the box body 8 in a layered mode, burying the pore water pressure sensor 18, connecting a cable of the pore water pressure sensor 18 with the information acquisition module 14 after penetrating through the excavation head 11, and finally fastening and connecting the upper cover plate 5 with the box body 8 through the high-strength bolt 3;
(2) the constant pressure water pump 12 is connected with the water filling port 4 through a high pressure water pipeline, the constant pressure water pump 12 is adjusted, and a water source with stable pressure is filled into the box body 8;
(3) adjusting the manual pump and injecting stable vertical stress into the box body 8;
(4) regulating water pressure and manual pump pressure to simulate the water-bursting and mud-bursting process of the trenchless fractured structure; regulating water pressure, manual pump pressure and excavation filling medium to simulate the water bursting and mud bursting process of an excavation fracture structure;
in the test process, the collection container 16 and the electronic scale 17 are used for recording the water inrush amount every 10s, the pore water pressure sensor 18 buried in the filling medium transmits the acquired data to the information acquisition module 14, the information acquisition module 14 transmits the acquired data to the computer 15, and the computer 15 displays the pore water pressure data on a screen of the computer 15 in real time after calculating through software, so that the automatic monitoring of the water inrush pressure is realized.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and inventive concept provided by the present invention should be covered within the scope of the present invention.

Claims (7)

1. A water-rich filling type fracture zone water-inrush mud-inrush mechanism test device comprises a test device main body, an information monitoring device, an information acquisition device and a pressure loading device, wherein the information monitoring device is used for monitoring and recording the change rule including but not limited to pore water pressure in the fracture zone seepage process; the information acquisition device is used for acquiring the pore water pressure, the water inrush amount and the mud inrush amount in the process of the fractured zone seepage; the pressure loading device is used for providing a pressure loading mode for the test device main body; the method is characterized in that:
the testing device comprises a testing device body and a testing device body, wherein the testing device body comprises a hydraulic cylinder, an upper cover plate, a pressing plate and a box body, the hydraulic cylinder is installed on the top surface of the upper cover plate through a fixed seat, the upper cover plate is installed at the upper end of the box body, a water filling port and a hole for a piston of the hydraulic cylinder to extend out are formed in the upper cover plate, a guide post is fixedly connected to the bottom surface of the upper cover plate, the pressing plate is sleeved on the guide post in a vertically sliding mode and is fixedly connected with the lower end of the piston of the hydraulic cylinder extending out of the upper cover plate, and a plurality of through holes for water to pass through are formed in the pressing plate; filling media are filled in the box body in a layered mode, an excavation opening is formed in the side wall of the box body, an excavation head with an excavation channel and a port sealing cover is connected to the excavation opening, and a water outlet is formed in the bottom of the box body;
the information monitoring device comprises a pore water pressure sensor which is buried in the filling medium and is connected with the information acquisition device through a cable.
2. The water-rich filling type fracture and fracture zone water-inrush and mud-inrush mechanism test device according to claim 1, characterized in that: the information acquisition device comprises an information acquisition module, a computer, an electronic scale and a collection container, wherein the information acquisition module is simultaneously connected with the computer and the pore water pressure sensor and used for acquiring pore water pressure change data in the test process, and the electronic scale and the collection container placed on the electronic scale are arranged below a water outlet of the box body and used for acquiring the mass of the muddy water mixture in the test process.
3. The water-rich filling type fracture and fracture zone water-inrush and mud-inrush mechanism test device according to claim 1, characterized in that: the pressure loading device comprises a water tank and a water pump, the water tank and the water pump provide a fixed pressure loading mode for the test device main body, and the water tank, the water pump and the hydraulic cylinder combine to provide a variable pressure loading mode for the test device main body.
4. The water-rich filling type fracture and fracture zone water-inrush and mud-inrush mechanism test device according to claim 1, characterized in that: the hydraulic cylinder is pressurized by a manual pump.
5. The water-rich filling type fracture and fracture zone water-inrush and mud-inrush mechanism test device according to claim 1, characterized in that: one side of the box body is provided with a visual window.
6. The water-rich filling type fracture and fracture zone water-inrush and mud-inrush mechanism test device according to claim 1, characterized in that: the end face of the bottom of the box body is gradually inclined downwards from the edge to the center, and the center position is the lowest, so that water can conveniently flow out from the water outlet.
7. The water-rich filling type fracture and fracture zone water-inrush and mud-inrush mechanism test device according to claim 1, characterized in that: and the bottom of the box body is provided with a water-permeable felt.
CN202121710432.3U 2021-07-26 2021-07-26 Water-rich filling type fracture zone water-inrush mud-inrush mechanism test device Active CN215492891U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121710432.3U CN215492891U (en) 2021-07-26 2021-07-26 Water-rich filling type fracture zone water-inrush mud-inrush mechanism test device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121710432.3U CN215492891U (en) 2021-07-26 2021-07-26 Water-rich filling type fracture zone water-inrush mud-inrush mechanism test device

Publications (1)

Publication Number Publication Date
CN215492891U true CN215492891U (en) 2022-01-11

Family

ID=79752083

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121710432.3U Active CN215492891U (en) 2021-07-26 2021-07-26 Water-rich filling type fracture zone water-inrush mud-inrush mechanism test device

Country Status (1)

Country Link
CN (1) CN215492891U (en)

Similar Documents

Publication Publication Date Title
CN104820084B (en) Coal and gas outburst similarity simulation test method based on geological mechanical model test
CN106525526B (en) A kind of measuring method of the high pressure water injection of raw coal containing gas and radial gas permeation rate
CN103556994A (en) Experimental detecting system and detecting method for distribution of remaining oil in fracture-cavity reservoir bed
CN108732024A (en) Simulate the pilot system and test method of differently stress condition lower plate gushing water
CN211784975U (en) Fracture porous grouting simulation test device under flowing water condition
CN103091222A (en) Device for simulating and testing water burst of tunnel fissure
CN106769747B (en) The experimental rig and its test method that soil body inflation resistance is seeped
CN109555519A (en) Hole wall destroys the pilot system and method for situation when simulating exploitation of gas hydrates
CN107290501B (en) Crack fault type geological structure internal filling medium seepage instability water inrush experiment device and method
CN105716960A (en) Foundation pit excavation model test device used in complicated groundwater environment
CN103821183A (en) Testing apparatus for simulating phenomenon and law of soil heave-piping failure
CN111351699B (en) Two-dimensional pressure-bearing overwater coal mining analog simulation test device and use method
CN105675846B (en) Phreatic table and the excavation of foundation pit model test apparatus of artesian head collaboration lifting
Cao et al. A novel large-scale three-dimensional apparatus to study mechanisms of coal and gas outburst
AU2020104397A4 (en) Experimental Facility and Method for Simulating Hydrodynamic Sand Carrying under Coupled Action of Seepage and Vibration
CN103926183B (en) Water-flowing amount test method under normal pressure and assay device
CN105301202B (en) For determining the test system and method for testing of up-protective layer exploitation relief range
CN106596378A (en) Device for batch experiment of soil body rainwater infiltration characteristics and use method thereof
CN205720219U (en) Phreatic table and artesian head work in coordination with the excavation of foundation pit model test apparatus of lifting
CN107725006A (en) A kind of coal bed drilling gas pumping simulation test device and method
CN215492891U (en) Water-rich filling type fracture zone water-inrush mud-inrush mechanism test device
CN103471977A (en) Detection system and detection method for detecting gas permeability of coal gangue fill
CN109030054A (en) This coal seam directional drilling process simulation experimental rig of one kind and method
CN209875149U (en) Test system for simulating hole wall damage condition in natural gas hydrate exploitation
CN205712215U (en) The excavation of foundation pit model test apparatus of simulation artesian head lifting

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant