CN110501473B - Goaf water exploring and draining experiment device and working method thereof - Google Patents
Goaf water exploring and draining experiment device and working method thereof Download PDFInfo
- Publication number
- CN110501473B CN110501473B CN201910885024.2A CN201910885024A CN110501473B CN 110501473 B CN110501473 B CN 110501473B CN 201910885024 A CN201910885024 A CN 201910885024A CN 110501473 B CN110501473 B CN 110501473B
- Authority
- CN
- China
- Prior art keywords
- goaf
- model
- water
- drilling
- drainage
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 192
- 238000002474 experimental method Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005553 drilling Methods 0.000 claims abstract description 73
- 238000001514 detection method Methods 0.000 claims abstract description 56
- 239000003245 coal Substances 0.000 claims abstract description 31
- 238000013461 design Methods 0.000 claims description 19
- 238000011010 flushing procedure Methods 0.000 claims description 7
- 238000004088 simulation Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 230000001052 transient effect Effects 0.000 claims description 3
- 238000010291 electrical method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000523 sample Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003657 drainage water Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/222—Solid fuels, e.g. coal
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Biochemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Geology (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Instructional Devices (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a goaf water detection and drainage experiment device and a working method thereof in the technical field of mine hydrogeology, wherein the goaf water detection and drainage experiment device comprises a water detection and drainage system, a goaf system and a goaf replenishment system, wherein the water detection and drainage system consists of a coal face model, a drilling site model, a water detection and drainage drilling model, a flowmeter and a filter; and the experimental time is short, the efficiency is high, most of experimental devices can be recycled, the cost is low, the experimental result can be observed intuitively, and the effect is good.
Description
Technical Field
The invention relates to the technical field of mine hydrogeology, in particular to a goaf water detection and drainage experiment device and a working method thereof.
Background
Coal is the main energy source for human to live, the coal exploitation history in China is long, a large number of goafs are formed, and accumulated water in the goafs forms a great threat to surrounding coal exploitation. Therefore, it is necessary to probe the surrounding goaf for water. However, the goaf has irregular shape, unknown water quantity, more gangue and complex replenishment, and whether the design of the water exploration and drainage engineering is reasonable is difficult to evaluate. In addition, the effect of the water detection and drainage engineering is not visualized on site, and an indoor experiment needs to be carried out. The traditional experimental device has a complex structure and is not easy to implement, the evolution rule of goaf ponding under the designed water detection and discharge engineering can not be intuitively seen, experimental means can not be provided for researching the inherent mechanism of goaf water detection and discharge under different conditions, and the like, so that a new experimental device for abandoning the defects of the traditional experimental device is urgently designed.
Disclosure of Invention
The invention aims to provide a goaf water detection and drainage experiment device and a working method thereof, which are used for solving the problem that a novel experiment device for discarding the defects of the traditional experiment device is required to be designed in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the goaf water exploration and drainage experiment device comprises a water exploration and drainage system, a goaf system and a goaf supply system, wherein the water exploration and drainage system comprises a coal face model, a drilling site model, a water exploration and drainage drilling model, a flowmeter and a filter, the goaf system comprises a goaf model, a gangue model and suspended matters, and the goaf supply system comprises a water-rich sponge body, a pressurizing device, a water seepage pipeline, a power supply, a water gushing pipeline and a high-level water tank.
Furthermore, the coal face model is of a hollow design and is positioned below the goaf model, and movable drilling field models are arranged at protruding positions on two sides of the coal face model in a communicating mode.
Further, the water-rich sponge body is positioned in the cavity of the pressurizing device, the cavity of the pressurizing device is communicated with the goaf model through a water seepage pipeline, the pressurizing device is electrically connected with a power supply through a switch and a wire, and the pressurizing device is an adjustable pressurizing device.
Further, the high-level water tank is communicated with the goaf model through a water burst pipeline, and the height of the high-level water tank is adjustable.
Further, the water-detecting and discharging drilling model is respectively communicated with the goaf model and the drilling site model, the goaf model is transparent in design and adjustable in shape, a scale is fixed on the goaf model in the vertical direction, water, a gangue model and suspended matters are filled in the goaf model, the gangue model is adjustable in size and shape, and the suspended matters are adjustable in quantity and size.
Furthermore, the middle part of the water detection and drainage drilling model is provided with a flowmeter, the front end part of the water detection and drainage drilling model is provided with a filter, the water detection and drainage drilling model is of a hollow design, and the length, the aperture and the position of the water detection and drainage drilling model are adjustable.
The working method of the goaf water detection and drainage experiment device comprises the following steps:
Step one: the goaf system is designed, and the goaf system consists of a goaf model, a gangue model and suspended matters, wherein the goaf model acquires the actual range of the goaf through geophysical exploration means such as an on-site electric method, geological radar, transient electromagnetic and the like; then, narrowing according to a geometric ratio n; finally, designing a goaf model according to the size of the reduced model and the inflection point, fixing the goaf model at the moment to prevent deformation, carrying out a numerical simulation experiment on the gangue model by data of the goaf to obtain the shape and the size of gangue in a caving region, obtaining the lithology of the gangue from a drilling histogram, reducing according to a geometric ratio n, placing the gangue with the same lithology in the goaf model, and in addition, obtaining a water sample of water accumulated in the goaf by carrying out drilling on site, testing and analyzing the water sample by an indoor laser granularity analyzer, wherein the percentage of particles with the size of less than 5 mu m, between 5 mu m and 10 mu m and more than 10 mu m is reduced according to the corresponding geometric ratio n, and placing suspended matters with the same lithology in the goaf model; finally, according to the water level observation of the on-site drilling, injecting accumulated water with the same water level into the goaf model after shrinking according to the geometric ratio n;
Step two: the goaf replenishing system is designed, a water filling aquifer of the goaf is determined according to a numerical simulation experiment in the first step, a hydrogeological comparison method is adopted to obtain the flow Q1 of an aquifer pipeline flow, the design time ratio is m, then the high-level water tank is supplied with the quantity Q2=Q 1 [ m/n 3 ] through a water flushing pipe, the high-level water tank is adjusted to reach the supply quantity Q2, the total water inflow Q3 is obtained through the on-site water inflow observation of the goaf, the actual permeable layer of the goaf is continuously supplied with the quantity Q4=Q 3-Q1, and the water-rich sponge is continuously supplied with the quantity Q5=Q 4 [ m/n 3; the pressurization rate of the pressurization device is adjusted to reach the supply quantity, and in addition, the total supply quantity Q6 of the weak aquifer is obtained through a pumping experiment of the weak aquifer on site, so that the total discharged water quantity Q7 = Q6/n 3 of the water-rich cavernous body;
Step three: the goaf water detecting and discharging system is designed, the spatial position relation, namely the distance, between a working face and the goaf is determined according to the field actual drilling disclosure condition, and then a coal face model is set after the geometrical ratio n is reduced; designing more than 2 drilling site models at protruding positions on two sides of the coal face model, wherein the starting point positions are in a safe distance range, wherein the safe distance range is more than the goaf distance D, D=60 meters to 100 meters, then reducing n to obtain a safe distance D1=D/n of the model, and then designing a group of drilling diameters, lengths and numbers;
Step four: performing water detection and drainage experiments through a water detection and drainage system, checking water level change from model reading through a transparent goaf model, and observing water discharge from flow on a water detection and drainage drilling model; recording that the total drainage of a single water detection and drainage drilling model is less than 5% of the total drainage of all drilling field models as low-efficiency drilling within 10 hours of the experiment; adjusting parameters of the low-efficiency drilling, namely any one or more of drilling diameter, length and number, or removing the low-efficiency drilling;
Step five: repeating the third and fourth steps until all the holes are not low-efficiency holes, recording the accumulated water quantity Q8 of the goaf model after the drainage is completed, and inverting the actual residual outage water quantity Q9=Q8x n 3 of the goaf according to the proportion;
step six: no water damage occurs in the coal safety exploitation process, and water detection and drainage are carried out according to the water detection and drainage design finally determined in the step five; and setting underground drainage capacity to be q11=q9+q10 before coal exploitation, wherein Q10 is other water inflow, and the water inflow is calculated and obtained according to a set hydrogeology comparison method, so that coal is safely exploited, and no goaf water damage occurs.
Compared with the prior art, the invention has the beneficial effects that: the goaf water detection and drainage experimental device is formed by three systems together, different water detection and drainage schemes are designed through goaf and supply conditions obtained through field investigation, the change conditions of water level and stored water quantity can be observed through a transparent goaf model, the water level and the water quantity are insufficient to threaten that goaf water detection and drainage is effective during coal mining, otherwise, the design scheme needs to be changed, the experimental device provides reasonable evaluation for goaf water accumulation water detection and drainage conditions, a large number of projects do not need to be carried out on site, simplicity and easiness in implementation are realized, the water detection and drainage effects under different drilling designs and goaf conditions can be evaluated, and the application range is wide; and the experimental time is short, the efficiency is high, most of experimental devices can be recycled, the cost is low, the experimental result can be observed intuitively, and the effect is good.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic plan view of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1-coal face model, 2-drilling site model, 3-goaf model, 4-gangue model, 5-water-rich sponge, 6-pressurizing device, 7-water seepage pipeline, 8-suspended matters, 9-power supply, 10-water flushing pipeline, 11-high-level water tank, 12-water-exploring drilling model, 13-flowmeter and 14-filter.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the present invention provides a technical solution: the goaf water exploration and drainage experiment device comprises a water exploration and drainage system, a goaf system and a goaf supply system, wherein the water exploration and drainage system comprises a coal face model 1, a drilling site model 2, a water exploration and drainage drilling model 12, a flowmeter 13 and a filter 14, the goaf system comprises a goaf model 3, a gangue model 4 and a suspended matter 8, and the goaf supply system comprises a water-rich sponge 5, a pressurizing device 6, a water seepage pipeline 7, a power supply 9, a water flushing pipeline 10 and a high-level water tank 11.
The coal face model 1 is of a hollow design and is positioned below the goaf model 3, and movable drill site models 2 are arranged at protruding positions on two sides of the coal face model 1 in a communicating mode.
The water-rich sponge 5 is positioned in the cavity of the pressurizing device 6, the cavity of the pressurizing device 6 is communicated with the goaf model 3 through the water seepage pipeline 7, the pressurizing device 6 is electrically connected with the power supply 9 through a switch and a wire, the pressurizing device 6 is an adjustable pressurizing device, and the water-rich sponge 5 mainly simulates the condition that the goaf model 3 is continuously supplied by a weakly permeable layer.
The high-level water tank 11 is communicated with the goaf model 3 through the water burst pipeline 10, the height of the high-level water tank 11 is adjustable, and the high-level water tank 11 mainly simulates the condition that the goaf model 3 is supplemented by a large amount of pipeline flow.
The water-detecting and discharging drilling model 12 is respectively communicated with the goaf model 3 and the drilling field model 2, the goaf model 3 is transparent in design and adjustable in shape, a scale is fixed on the goaf model 3 in the vertical direction, water, the gangue model 4 and suspended matters 8 are filled in the goaf model 3, the gangue model 4 is adjustable in size and shape, and the suspended matters 8 are adjustable in quantity and size.
The middle part of the water detection and drainage drilling model 12 is provided with a flowmeter 13, the front end part of the water detection and drainage drilling model 12 is provided with a filter 14, the water detection and drainage drilling model 12 is hollow, the two end parts are sealed, and the length, the aperture and the position of the water detection and drainage drilling model 12 are adjustable.
The water detection and drainage system restores the design of the on-site water detection and drainage engineering, and the process can directly observe the spatial position of the water detection and drainage drilling model 12, the spatial state of the water entering the goaf model 3, the condition that the filter 14 is blocked and the response condition that the flow of the water detection and drainage drilling model 12 changes along with various factors.
The goaf system restores various impurity characteristics of the site goaf, namely the interaction relation between suspended matters 8 and gangue model 4 and the space fluctuation of the goaf.
The goaf supply system restores the situation that the goaf model 3 is supplied with water through the high-level water tank 11 after the weak aquifer of the goaf slowly releases water, namely, the water-rich sponge 5 is pressurized by the pressurizing device 6, and then slowly releases water and the pipeline flow is quickly supplied.
The three systems jointly form the goaf water detection and drainage experimental device, goaf and supply conditions are obtained through field investigation, different water detection and drainage schemes are designed, the water level and storage water quantity change conditions can be observed through the transparent goaf model 3, the water level and the water quantity are insufficient to threaten that goaf water detection and drainage is effective during coal mining, otherwise, the design scheme needs to be changed, and the experimental device provides reasonable evaluation for goaf ponding water detection and drainage conditions.
The specific application method of the patent application is as follows:
Step one: the goaf system is designed, and the goaf system consists of a goaf model 3, a gangue model 4 and suspended matters 8, wherein the goaf model acquires the actual range of the goaf through geophysical exploration means such as an on-site electric method, a geological radar, transient electromagnetic and the like; then, narrowing according to a geometric ratio n; finally, designing a goaf model 3 according to the reduced model size and inflection points, fixing the goaf model 3 to prevent deformation, carrying out a numerical simulation experiment on the gangue model 4 through goaf data to obtain the shape and the size of gangue in a caving region, obtaining the lithology of the gangue from a drilling histogram, reducing according to a geometric ratio n, placing the gangue with the same lithology in the goaf model 3, in addition, obtaining a water sample of goaf ponding through on-site drilling, testing and analyzing the water sample by an indoor laser granularity analyzer, wherein the percentage of particles with the granularity of less than 5 mu m to 10 mu m and more than 10 mu m is reduced according to the corresponding geometric ratio n, and placing suspended matters with the same lithology in the goaf model 3; finally, according to the water level observation of the on-site drilling, the goaf model 3 is injected with accumulated water with the same water level after being reduced according to the geometric ratio n;
Step two: the goaf replenishing system is designed, a water filling aquifer of the goaf is determined according to a numerical simulation experiment in the first step, a hydrogeological comparison method is adopted to obtain the flow Q1 of an aquifer pipeline flow, the design time ratio is m, the high-level water tank 11 is supplied with Q2 = Q1 m/n 3 through a water flushing pipe, the high-level water tank 11 height is adjusted to reach the supply Q2, the total water inflow Q3 is obtained through goaf site water inflow observation, the actual permeable layer of the goaf continuously supplies Q4 = Q3-Q1, and the water-rich sponge 5 continuously supplies Q5 = Q4 m/n 3; the pressurization rate of the pressurization device 6 is adjusted to reach the supply quantity, and in addition, the total supply quantity Q6 of the weak aquifer is obtained through a pumping experiment of the weak aquifer on site, so that the total drainage water quantity Q7 = Q6/n 3 of the water-rich cavernous body;
Step three: the goaf water detecting and discharging system is designed, the spatial position relation, namely the distance, between a working face and the goaf is determined according to the field actual drilling disclosure condition, and then the coal face model 1 is set after the geometrical ratio n is reduced; designing more than 2 drilling field models 2 at protruding positions on two sides of the coal face model 1, wherein the starting point positions are in a safe distance range, wherein the safe distance range is more than the goaf distance D, D=60 meters to 100 meters, then reducing n to obtain a safe distance D1=D/n of the model, and then designing a group of drilling diameters, lengths and numbers;
step four: performing water detection and drainage experiments through a water detection and drainage system, checking water level change from model reading through a transparent goaf model 3, and observing water discharge from flow on a water detection and drainage drilling model 12; recording that the total drainage of the single water detection and drainage drilling model 12 is less than 5% of the total drainage of all the drilling site models 2 as a low-efficiency drilling in 10 hours of the experiment; adjusting parameters of the low-efficiency drilling, namely any one or more of drilling diameter, length and number, or removing the low-efficiency drilling;
Step five: repeating the third and fourth steps until all the holes are not low-efficiency holes, recording the water accumulation quantity Q8 of the goaf model 3 after the water drainage is completed, and inverting the actual residual outage water quantity Q9=Q8gamma n 3 of the goaf according to the proportion;
step six: no water damage occurs in the coal safety exploitation process, and water detection and drainage are carried out according to the water detection and drainage design finally determined in the step five; and setting underground drainage capacity to be q11=q9+q10 before coal exploitation, wherein Q10 is other water inflow, and the water inflow is calculated and obtained according to a set hydrogeology comparison method, so that coal is safely exploited, and no goaf water damage occurs.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean 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 present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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 preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (2)
1. The utility model provides a goaf surveys drainage experimental apparatus, includes surveys drainage system, goaf system and goaf replenishment system, its characterized in that: the water detection and drainage system consists of a coal face model (1), a drilling site model (2), a water detection and drainage drilling model (12), a flowmeter (13) and a filter (14), the goaf system consists of a goaf model (3), a gangue model (4) and suspended matters (8), and the goaf supply system consists of a water-rich sponge body (5), a pressurizing device (6), a water seepage pipeline (7), a power supply (9), a water flushing pipeline (10) and a high-level water tank (11);
The coal face model (1) is of a hollow design and is positioned below the goaf model (3), and movable drilling site models (2) are arranged at protruding positions on two sides of the coal face model (1) in a communicating mode;
The water-rich sponge body (5) is positioned in a cavity of the pressurizing device (6), the cavity of the pressurizing device (6) is communicated with the goaf model (3) through a water seepage pipeline (7), the pressurizing device (6) is electrically connected with the power supply (9) through a switch and a wire, and the pressurizing device (6) is an adjustable pressurizing device;
The high-level water tank (11) is communicated with the goaf model (3) through a water flushing pipeline (10), and the height of the high-level water tank (11) is adjustable;
The water exploration and drainage drilling model (12) is respectively communicated with the goaf model (3) and the drilling field model (2), the goaf model (3) is of transparent design and is adjustable in shape, a scale is fixed on the goaf model in the vertical direction, the bottom of the goaf model (3) is adjustable in shape, water, the gangue model (4) and suspended matters (8) are filled in the goaf model, the size and the shape of the gangue model (4) are adjustable, and the number and the size of the suspended matters (8) are adjustable;
The middle part of the water detection and drainage drilling model (12) is provided with a flowmeter (13), the front end part of the water detection and drainage drilling model (12) is provided with a filter (14), the water detection and drainage drilling model (12) is of a hollow design, and the length, the aperture and the position of the water detection and drainage drilling model (12) are adjustable.
2. The working method of the goaf water detection and drainage experiment device according to claim 1, comprising the following steps:
Step one: the goaf system is designed, and the goaf system consists of a goaf model (3), a gangue model (4) and suspended matters (8), wherein the goaf model acquires the actual range of the goaf through an on-site electrical method, a geological radar and a transient electromagnetic geophysical exploration means; then, narrowing according to a geometric ratio n; finally, designing a goaf model (3) according to the size of the reduced model and the inflection point, fixing the goaf model (3) to prevent deformation, carrying out a numerical simulation experiment on the gangue model (4) through goaf data to obtain the shape and the size of gangue in a caving region, obtaining the lithology of the gangue from a drilling histogram, reducing according to a geometric ratio n, placing the gangue with the same lithology in the goaf model (3), obtaining a water sample of goaf ponding through on-site drilling, testing and analyzing the percentage of particles with the particle size of less than 5 mu m, between 5 mu m and 10 mu m and more than 10 mu m in the water sample through an indoor laser granularity analyzer, reducing according to the corresponding geometric ratio n, and placing suspended matters with the same lithology in the goaf model (3); finally, according to the water level observation of the on-site drilling, the goaf model (3) is injected with accumulated water with the same water level after being reduced according to the geometric ratio n;
Step two: the goaf supply system is designed, a water filling aquifer of the goaf is determined according to the numerical simulation experiment in the first step, a hydrogeological comparison method is adopted to obtain the flow Q1 of the aquifer pipeline flow, the design time ratio is m, and then the high-level water tank (11) is supplied with Q2 = Q1 gamma m/n through a water flushing pipe The replenishing quantity Q2 is achieved by adjusting the height of the high-level water tank (11), the total water inflow quantity Q3 is obtained by observing the water inflow quantity on site of the goaf, the continuous replenishing quantity Q4 = Q3-Q1 of the actual permeable layer of the goaf, and the continuous replenishing quantity Q5 = Q4 gamma m/n/>, of the water-rich sponge body (5); The pressurization rate of the pressurization device (6) is adjusted to reach the supply quantity, and in addition, the total supply quantity Q6 of the weak aquifer is obtained through a pumping experiment of the weak aquifer on site, so that the total drainage quantity Q7 = Q6/n/>, of the water-rich sponge body；
Step three: the goaf water detecting and discharging system is designed, the spatial position relation, namely the distance, between a working face and the goaf is determined according to the field actual drilling disclosure condition, and then a coal face model (1) is arranged after the geometrical ratio n is reduced; designing more than 2 drilling site models (2) at protruding positions on two sides of a coal face model (1), wherein starting positions of the drilling site models are in a safe distance range, the safe distance range is more than a goaf distance D, D=60 meters to 100 meters, then reducing n to obtain a safe distance D1=D/n of the model, and then designing a group of drilling diameters, lengths and numbers;
Step four: carrying out water detection experiments through a water detection and discharge system, checking water level change from model reading through a transparent goaf model (3), and observing water discharge from flow on a water detection and discharge drilling model (12); recording that the total drainage of a single water-logging drilling model (12) is less than 5% of the total drainage of all drilling site models (2) as a low-efficiency drilling within 10 hours of the experiment; adjusting parameters of the low-efficiency drilling, namely any one or more of drilling diameter, length and number, or removing the low-efficiency drilling;
Step five: repeating the third and fourth steps until all the holes are not low-efficiency holes, recording the water accumulation Q8 of the goaf model (3) after the water drainage is completed, and inverting the actual residual outage water quantity Q9=Q8gamma n of the goaf according to the proportion ；
Step six: no water damage occurs in the coal safety exploitation process, and water detection and drainage are carried out according to the water detection and drainage design finally determined in the step five; and setting underground drainage capacity to be q11=q9+q10 before coal exploitation, wherein Q10 is other water inflow, and the water inflow is calculated and obtained according to a set hydrogeology comparison method, so that coal is safely exploited, and no goaf water damage occurs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910885024.2A CN110501473B (en) | 2019-09-19 | 2019-09-19 | Goaf water exploring and draining experiment device and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910885024.2A CN110501473B (en) | 2019-09-19 | 2019-09-19 | Goaf water exploring and draining experiment device and working method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110501473A CN110501473A (en) | 2019-11-26 |
| CN110501473B true CN110501473B (en) | 2024-04-30 |
Family
ID=68592160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910885024.2A Active CN110501473B (en) | 2019-09-19 | 2019-09-19 | Goaf water exploring and draining experiment device and working method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110501473B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111221043B (en) * | 2020-01-20 | 2021-04-20 | 中南大学 | Working parameter optimization method of passive source electric field method |
| CN111208570B (en) * | 2020-01-20 | 2021-04-20 | 中南大学 | Working parameter optimization method of frequency domain conduction electrical method of single resistivity anomaly |
| CN116641656B (en) * | 2023-06-21 | 2024-04-02 | 煤炭工业太原设计研究院集团有限公司 | Old mining residual coal roadway type goaf drilling exploration method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016115816A1 (en) * | 2015-01-23 | 2016-07-28 | 中国矿业大学 | Structural discrimination indexes of ordovician limestone top filling zones and determination method |
| CN106150501A (en) * | 2016-06-30 | 2016-11-23 | 太原理工大学 | Utilize the method that Overburden gob area situ waste water weakens master control coal rock layer |
| CN106555609A (en) * | 2016-11-21 | 2017-04-05 | 西安科技大学 | A kind of coal mine gob water is visited and puts method |
| CN107165626A (en) * | 2017-06-30 | 2017-09-15 | 徐州市耐力高分子科技有限公司 | A kind of coal-face floods prevention method with cranny development country rock top plate |
| CN108955649A (en) * | 2018-05-21 | 2018-12-07 | 中国矿业大学 | A kind of prediction technique of coal mine work area top plate process water yield |
| CN109162731A (en) * | 2018-08-16 | 2019-01-08 | 山东科技大学 | Iron producing area deep mining gushing water grouting treatment method |
| CN109869187A (en) * | 2019-03-11 | 2019-06-11 | 山东科技大学 | It is detected based on the hydrology and the unrestrained feasibility analysis method in the water-bearing layer of outflow test |
| CN211086281U (en) * | 2019-09-19 | 2020-07-24 | 六盘水师范学院 | Water exploration and drainage experimental device for goaf |
-
2019
- 2019-09-19 CN CN201910885024.2A patent/CN110501473B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016115816A1 (en) * | 2015-01-23 | 2016-07-28 | 中国矿业大学 | Structural discrimination indexes of ordovician limestone top filling zones and determination method |
| CN106150501A (en) * | 2016-06-30 | 2016-11-23 | 太原理工大学 | Utilize the method that Overburden gob area situ waste water weakens master control coal rock layer |
| CN106555609A (en) * | 2016-11-21 | 2017-04-05 | 西安科技大学 | A kind of coal mine gob water is visited and puts method |
| CN107165626A (en) * | 2017-06-30 | 2017-09-15 | 徐州市耐力高分子科技有限公司 | A kind of coal-face floods prevention method with cranny development country rock top plate |
| CN108955649A (en) * | 2018-05-21 | 2018-12-07 | 中国矿业大学 | A kind of prediction technique of coal mine work area top plate process water yield |
| CN109162731A (en) * | 2018-08-16 | 2019-01-08 | 山东科技大学 | Iron producing area deep mining gushing water grouting treatment method |
| CN109869187A (en) * | 2019-03-11 | 2019-06-11 | 山东科技大学 | It is detected based on the hydrology and the unrestrained feasibility analysis method in the water-bearing layer of outflow test |
| CN211086281U (en) * | 2019-09-19 | 2020-07-24 | 六盘水师范学院 | Water exploration and drainage experimental device for goaf |
Non-Patent Citations (2)
| Title |
|---|
| 煤矿井下精确定向探放水技术;石浩;张杰;;煤矿安全;20150220(02);全文 * |
| 老采空区积水立体综合集成探放水技术;杨春林;武书泉;;煤矿开采;20100415(02);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110501473A (en) | 2019-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110501473B (en) | Goaf water exploring and draining experiment device and working method thereof | |
| CN102768369B (en) | Roadway drivage drilling induced polarization advance water probing forecasting method, device and probe | |
| CN111947988B (en) | Device for layered pumping and sampling of underground water and test method thereof | |
| CN110426504B (en) | Karst aquifer sand box test system and method based on tracing hydraulic chromatography inversion | |
| CN107238482B (en) | North China coal field karst collapse column evolution process test device system | |
| CN105318824B (en) | A kind of method that wall rock loosening ring is measured based on distributed resistance foil gauge | |
| CN105021662B (en) | Adopt workplace regimen real-time dynamic monitoring test unit and test method | |
| CN207554022U (en) | Ocean gas hydrate producing well sand-carrying production rule analogue system | |
| CN104792966A (en) | Testing device and method for simulating stratum cavities caused by subway shield tunnel construction | |
| CN107014730A (en) | A kind of method for simulating true groundwater erosion Nuclear Waste Repository padded coaming | |
| CN108877451A (en) | Upper thoroughly lower resistance type cap rock is collapsed to because of experimental provision | |
| Arcila et al. | Identification of flow zones inside and at the base of a uranium mine tailings dam using geophysics | |
| US11835508B2 (en) | Model test device for ground collapse caused by pipeline leakage | |
| CN211086281U (en) | Water exploration and drainage experimental device for goaf | |
| CN106246162A (en) | Floor undulation is across borescopic imaging device and slip casting effect monitoring method | |
| CN103345867A (en) | Artesian well water-pumping dynamic experiment instrument | |
| CN219573838U (en) | Slurry diffusion and permeation boundary monitoring simulation device in grouting process | |
| CN109594980B (en) | Visual experiment device for simulating dynamic sand blocking law of gravel layer | |
| CN115165974A (en) | LNAPL migration monitoring device and data processing method thereof | |
| CN209990484U (en) | Giant magnetostrictive forced vibration permeability increasing system | |
| CN207204848U (en) | A kind of monitoring system for in-situ immobilization injected system | |
| Zhang et al. | Detection and evaluation of crack development near the fault zone under the influence of coal mining | |
| CN207249981U (en) | A kind of experiment simulator of quantitative study karst collapse | |
| CN217931510U (en) | High-density resistivity method test box for foundation pit waterproof curtain defect research | |
| CN114114439B (en) | Automatic monitoring device and method for automatic recovery condition of overburden mining fracture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |