CN106228889B - Experimental technique based on the routed water experiment porch of mine earth's surface raceway groove flowing water - Google Patents
Experimental technique based on the routed water experiment porch of mine earth's surface raceway groove flowing water Download PDFInfo
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- CN106228889B CN106228889B CN201610864486.2A CN201610864486A CN106228889B CN 106228889 B CN106228889 B CN 106228889B CN 201610864486 A CN201610864486 A CN 201610864486A CN 106228889 B CN106228889 B CN 106228889B
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Abstract
The invention discloses a kind of experimental technique of water experiment porch of being burst based on mine earth's surface raceway groove flowing water, comprise the following steps：First, determine mine earth's surface raceway groove object and build experiment porch；2nd, the crack tonicity and water flow of leak tank are controlled and the routed water of leak tank is observed；3rd, calculate actual routed water proportion and determine influence degree of each factor to actual routed water.Step of the present invention is simple, by determining that actual mine earth's surface raceway groove builds experiment porch with the model scale of experiment porch, can be by adjusting the crack tonicity of leak tank and the water flow of leak tank, change unitary variant, carry out many experiments, the routed water of the leak tank observed under different gradient degree compares the difference between water of actually bursting under different condition, obtain the factor of the routed water change of influence mine earth's surface raceway groove flowing water, complete function.
Description
Technical field
The invention belongs to mine water disaster Prevention Technique field, and in particular to one kind is based on the routed water of mine earth's surface raceway groove flowing water
The experimental technique of experiment porch.
Background technology
In recovery process, roof basement rock is caving destruction, and develops to earth's surface with crack in coal seam.Some coals
Layer is shallow due to its own buried depth, and the caving zone of seam mining formation, fissure zone are easily developed to earth's surface, in some gully karness
Area, crack is more easy to be developed to earth's surface formation through crack.Simultaneously as raceway groove collects beneficial to flowing water, easily formed in rainy season and advised
The larger earth's surface mighty torrent of mould, therefore when working face is exploited by cheuch area, earth's surface through crack easily causes surface flow under water
Fill, cause raceway groove flowing water to be burst into underground, cause the generation of water inrush accident.
But the routed water that raceway groove flowing water is burst into underground is by hydraulic gradient, fracture width, water flow, flow velocity etc. of raceway groove
Many factors are controlled.And not yet have the experimental technique of such water of being burst on the earth's surface flowing water that through crack causes at present.Therefore
It is badly in need of a kind of experimental technique for the routed water of earth's surface raceway groove flowing water be accurately expected using related experimental provision, analog study
Routed water problems of the rock matter raceway groove crack under different affecting factors.
The content of the invention
The technical problems to be solved by the invention are for above-mentioned deficiency of the prior art, there is provided one kind is based on mine
Earth's surface raceway groove flowing water is burst the experimental technique of water experiment porch, and its step is simple, can be by adjusting the crack tonicity of leak tank
With the water flow of leak tank, change unitary variant, carry out many experiments, the leak tank observed under different gradient degree
Burst water, compare the difference between water of actually bursting under different condition, obtain influence mine earth's surface raceway groove flowing water and burst water change
Factor, complete function.
In order to solve the above technical problems, the technical solution adopted by the present invention is：Based on the routed water of mine earth's surface raceway groove flowing water
The experimental technique of experiment porch, the experiment porch is connected and the leakage with gradient including water-storing device with the water-storing device
Water tank and the main drainage channel coordinated with the leak tank, between the water-storing device and the main drainage channel and positioned at described
Be provided with multiple assisted drainage canals on the downside of leak tank, the bottom of the leak tank be provided with a plurality of tonicity it is adjustable and with it is many
The crack that individual assisted drainage canal coordinates, the two ends of the leak tank are provided with sideboard, are set on the leak tank
There are the movable chaining pin for measuring the leak tank water level and the Pitot tube for measuring the leak tank water velocity, it is auxiliary
Help drainage ditch terminal position that triangle weir is installed, main drainage channel terminal position is provided with design, assisted drainage canal
Be mounted on fixing chaining pin on main drainage channel；The water-storing device includes cistern, the feed pipe for cistern water supply and sets
Put in cistern and for the steady water grid of stable water supply pipe water outlet, the water inlet end of the feed pipe is provided with water pump, supply water
The valve of control water size is installed on pipe；Characterized in that, the experimental technique is comprised the following steps：
Step one, determine mine earth's surface raceway groove object and build experiment porch：First, it is determined that actual mine earth's surface raceway groove with
The model scale of leak tank；Then, cross dimensions according to actual mine earth's surface raceway groove, hydraulic gradient, history water flow
And actual crack location, determine cross dimensions, hydraulic gradient, water flow and the crack location of leak tank, wherein, institute
State the cell wall of the cross dimensions including leak tank canal bottom width degree and leak tank of leak tank highly；
Step 2, the routed water for controlling the crack tonicity and water flow of leak tank and observing leak tank：By opening
The water flow that water pump, controlling opening of valve control the leak tank is opened, when the crack tonicity of the fixation leak tank, Gu
During the water flow of the fixed leak tank, step 201 is performed；When the crack tonicity of the fixation leak tank, regulation is described
During the water flow of leak tank, step 202 is performed；When the water flow of the fixation leak tank, the leak water is adjusted
During the crack tonicity of groove, step 203 is performed；
Flow rate of water flow in leak tank described in sideboard Level Change on step 201, the regulation leak tank, surveys
The depth of water before each crack in the corresponding leak tank of each flow rate of water flow is measured, main drainage channel under each flow rate of water flow is obtained respectively
On water flow and multiple assisted drainage canals on water flow sum, flow rate of water flow passes through Pitot tube in the leak tank
Measure, the depth of water before first crack in the leak tank is measured by movable chaining pin, the current on multiple assisted drainage canals
Flow sum is the routed water of leak tank；
Sideboard on step 202, the regulation leak tank highly opens the aperture regulation of water pump and control valve
The water flow of the leak tank, measures flow rate of water flow in the leak tank, and measures first in the leak tank
The depth of water before crack, obtains the water flow sum on the water flow and multiple assisted drainage canals on main drainage channel；
Step 203, the crack tonicity for adjusting the leak tank, are adjusted on the leak tank for each crack tonicity
Flow rate of water flow in leak tank described in sideboard Level Change, and measure the corresponding leak tank of each flow rate of water flow
The depth of water before first crack, obtains on the water flow and multiple assisted drainage canals under each flow rate of water flow on main drainage channel respectively
Water flow sum；
Step 3, the actual routed water proportion of calculating determine influence degree of each factor to actual routed water：By leak water
In the ratio between the water flow before first crack in the routed water of groove and leak tank calculation procedure two it is each under the conditions of reality
The routed water proportion in border, draws influence degree of each factor to actual routed water.
The experimental technique of above-mentioned water experiment porch of being burst based on mine earth's surface raceway groove flowing water, it is characterised in that：Step 201
The water flow on main drainage channel is obtained by design into step 203, triangle is passed through in step 201 to step 203
Weir obtains the water flow on assisted drainage canal.
The experimental technique of above-mentioned water experiment porch of being burst based on mine earth's surface raceway groove flowing water, it is characterised in that：It is described auxiliary
The end of drainage ditch and main drainage channel is helped to be provided with backflow pool, water pump is arranged in backflow pool.
The experimental technique of above-mentioned water experiment porch of being burst based on mine earth's surface raceway groove flowing water, it is characterised in that：The leakage
The quantity of water tank is multiple, and the gradient of multiple leak tanks is different.
The experimental technique of above-mentioned water experiment porch of being burst based on mine earth's surface raceway groove flowing water, it is characterised in that：The leakage
The quantity of water tank is two, and two leak tanks are respectively the first leak tank and the second leak tank, described first
The gradient of leak tank is 5 ‰~8 ‰, and the gradient of the second leak tank is 5%~8%.
The experimental technique of above-mentioned water experiment porch of being burst based on mine earth's surface raceway groove flowing water, it is characterised in that：Described
The inwall of one leak tank and the second leak tank is carried out manually plus rough by way of adhering to coarse granule sandstone.
The experimental technique of above-mentioned water experiment porch of being burst based on mine earth's surface raceway groove flowing water, it is characterised in that：The valve
Door is connected by ring flange with feed pipe.
The experimental technique of above-mentioned water experiment porch of being burst based on mine earth's surface raceway groove flowing water, it is characterised in that：The storage
Trapezoid-shaped openings are provided with pond, cistern is connected by the trapezoid-shaped openings with the leak tank.
The present invention has advantages below compared with prior art：
1st, when the experimental technique that the present invention is used carries out actual routed water acquisition, it is first determined produce shadow to actual routed water
Loud variable, produces the variable of influence to include leak tank gradient, the crack tonicity of leak tank and leak on actual routed water
The water flow of tank；The crack tonicity for changing leak tank by the water flow of fixed water tank measures actual routed water；
When the water flow of leak tank is fixed, the depth of water in the flow rate of water flow influence leak tank of leak tank, and leak tank
Flow rate of water flow and leak tank reclaimed water plutonic inverse ratio, the actual routed water of measurement；When the water flow of leak tank is not fixed, lead to
Cross the sideboard moved up and down on leak tank and change the flow rate of water flow of leak tank while measuring depth of water change in leak tank
Change, the actual routed water of measurement, complete function, using effect is good.
2nd, the experimental technique that the present invention is used is applicable to the experimental work of the routed water in rock matter raceway groove crack, can also carry out
Various variable relation combination experiments, simple to operate, the water size of being burst to rock matter raceway groove crack for being capable of science is studied.
3rd, the experimental technique that the present invention is used can obtain the water level and flow velocity of leak tank by movable chaining pin and Pitot tube；
The water level and flow of main drainage channel can be obtained by fixed chaining pin and design；Can be by fixed chaining pin and triangle weir
The water level and flow of direct access assisted drainage canal；The routed water for observing leak tank is fast reliable.
4th, the present invention is novel in design rationally, and step is simple, the difference between water of actually being burst under comparable different condition, obtains
The factor of the routed water change of influence mine earth's surface raceway groove flowing water is taken, complete function is easy to promote the use of.
In sum, step of the present invention is simple, by the model scale for determining actual mine earth's surface raceway groove and experiment porch
Experiment porch is built, unitary variant can be changed by adjusting the crack tonicity of leak tank and the water flow of leak tank, entered
Row many experiments, the routed water of the leak tank observed under different gradient degree compares and actually burst under different condition between water
Difference, obtain influence mine earth's surface raceway groove flowing water and burst the factor of water change, complete function.
Below by drawings and Examples, technical scheme is described in further detail.
Brief description of the drawings
Fig. 1 is the structural representation of experiment porch of the present invention.
Fig. 2 is the installation relation schematic diagram of leak tank and assisted drainage canal in experiment porch of the present invention.
Fig. 3 is the structural representation of water-storing device in experiment porch of the present invention.
Fig. 4 is the flow chart of experimental technique of the present invention based on experiment porch.
Description of reference numerals:
1-cistern；2-feed pipe；3-ring flange；
4-valve；5-water pump；6-backflow pool；
7-the first leak tank；8-the second leak tank；9-sideboard；
10-Pitot tube；11-movable chaining pin；12-crack；
13-fixed chaining pin；14-assisted drainage canal；15-triangle weir；
16-design；17-main drainage channel；18-steady water grid.
Specific embodiment
As shown in Figure 1, Figure 2 and Figure 4, experiment side of the present invention based on the routed water experiment porch of mine earth's surface raceway groove flowing water
Method, the experiment porch connected with the water-storing device including water-storing device and the leak tank with gradient and with the leakage
The main drainage channel 17 that water tank coordinates, between the water-storing device and the main drainage channel 17 and under the leak tank
Side is provided with multiple assisted drainage canals 14, the bottom of the leak tank be provided with a plurality of tonicity it is adjustable and with multiple assisted drainages
The crack 12 that canal 14 coordinates, the two ends of the leak tank are provided with sideboard 9, be provided with the leak tank for
The movable chaining pin 11 and the Pitot tube 10 for measuring the leak tank water velocity of the leak tank water level are measured, is aided in
The terminal position of drainage ditch 14 is provided with triangle weir 15, and the terminal position of main drainage channel 17 is provided with design 16, auxiliary
It is mounted on fixing chaining pin 13 on drainage ditch 14 and main drainage channel 17；The water-storing device includes cistern 1, supplies for cistern 1
The feed pipe 2 of water and it is arranged in cistern 1 and for the steady water grid 18 of the water outlet of stable water supply pipe 2, the feed pipe 2 enters
Water end (W.E.) is provided with water pump 5, and the valve 4 of control water size is provided with feed pipe 2；
In the present embodiment, be led to water into cistern 1 using water pump 5 by feed pipe 2, and the water outlet of feed pipe 2 passes through steady water
Grid 18 makes current tend towards stability；
The experimental technique is comprised the following steps：
Step one, determine mine earth's surface raceway groove object and build experiment porch：First, it is determined that actual mine earth's surface raceway groove with
The model scale of leak tank；Then, cross dimensions according to actual mine earth's surface raceway groove, hydraulic gradient, history water flow
And actual crack location, determine cross dimensions, hydraulic gradient, water flow and the position of crack 12 of leak tank, wherein,
Cell wall of the cross dimensions of the leak tank including leak tank canal bottom width degree and leak tank is highly；
Step 2, the routed water for controlling the crack tonicity and water flow of leak tank and observing leak tank：By opening
The water flow that water pump 5, the aperture of control valve 4 control the leak tank is opened, when the crack tonicity of the fixation leak tank,
During the water flow of the fixation leak tank, step 201 is performed；When the crack tonicity of the fixation leak tank, institute is adjusted
When stating the water flow of leak tank, step 202 is performed；When the water flow of the fixation leak tank, the leak is adjusted
During the crack tonicity of tank, step 203 is performed；
It should be noted that it can be seen from formula Q=bhv, when the water flow Q of leak tank is fixed, leak tank
The flow rate of water flow v and depth of water h in leak tank of depth of water h and leak tank are inversely proportional in flow rate of water flow v influence leak tanks, different
Leak tank flow rate of water flow v influence observation leak tank routed water, wherein, b be leak tank canal bottom width degree；
Flow rate of water flow in leak tank described in the Level Change of sideboard 9 on step 201, the regulation leak tank,
The depth of water before each crack 12 in the corresponding leak tank of each flow rate of water flow is measured, main row under each flow rate of water flow is obtained respectively
The water flow sum on water flow and multiple assisted drainage canals 14 on water channel 17, flow rate of water flow leads in the leak tank
Cross Pitot tube 10 to measure, the depth of water before first crack 12 in the leak tank passes through movable chaining pin 11 and measures, multiple auxiliary
Water flow sum on drainage ditch 14 is the routed water of leak tank；
Step 202, the height of sideboard 9 adjusted on the leak tank, the aperture for opening water pump and control valve are adjusted
The water flow of the leak tank is saved, flow rate of water flow in the leak tank is measured, and measure the head in the leak tank
The depth of water before individual crack 12, obtain water flow on the water flow and multiple assisted drainage canals 14 on main drainage channel 17 it
With；
Step 203, the crack tonicity for adjusting the leak tank, are adjusted on the leak tank for each crack tonicity
Flow rate of water flow in leak tank described in the Level Change of sideboard 9, and measure the corresponding leak tank of each flow rate of water flow
First crack 12 before the depth of water, the water flow and multiple assisted drainages under each flow rate of water flow on main drainage channel 17 are obtained respectively
Water flow sum on canal 14；
Step 3, the actual routed water proportion of calculating determine influence degree of each factor to actual routed water：By leak water
In the ratio between the water flow before first crack 12 in the routed water of groove and leak tank calculation procedure two it is each under the conditions of
Actual routed water proportion, draws influence degree of each factor to actual routed water.
It should be noted that according to different experiment conditions, the routed water of respective reality is calculated respectively.
In the present embodiment, the current stream on main drainage channel 17 is obtained by design 16 in step 201 to step 203
Amount, the water flow on assisted drainage canal 14 is obtained in step 201 to step 203 by triangle weir 15.
In the present embodiment, the water flow q that design 16 is obtained on main drainage channel 17 uses formulaWherein, B is the water channel width of main drainage channel 17, and H is the design 16 for fixing the acquisition of chaining pin 13
Weir headwater depth, g is acceleration of gravity.
In the present embodiment, the water flow q' that triangle weir 15 is obtained on assisted drainage canal 14 uses formulaWherein, α is the weir crest angle of triangle weir 15, and H' is three angular amount for fixing the acquisition of chaining pin 13
The weir headwater depth of mill weir 15.
As shown in figure 1, in the present embodiment, the end of the assisted drainage canal 14 and main drainage channel 17 is provided with backflow pool 6,
Water pump 5 is arranged in backflow pool 6, in the present embodiment, using backflow pool 6 by cistern 1, main drainage channel 17 and multiple assisted drainage
Canal 14 is connected, and by backflow pool 6 for cistern 1 supplies water, cistern 1 flows to main drainage channel 17 and multiple auxiliary rows through leak tank
The current of water channel 14 flow back into backflow pool 6, realize recycling for water resource, energy saving.
In the present embodiment, the quantity of the leak tank is multiple, and the gradient of multiple leak tanks is different.
It should be noted that the quantity and the quantity of assisted drainage canal 14 in the crack 12 that the bottom of the leak tank is set
It is equal, multiple leak tanks, each not phase of gradient of multiple leak tanks are set on cistern 1 according to the actual requirements
Together, influence of the different hydraulic gradients to the routed water in raceway groove crack is met, the end of each leak tank is arranged on main row
On water channel 17, the two ends of each leak tank are provided with sideboard 9, an active catch in two sideboards 9
Plate 9 is arranged at the leak tank and the link position of cistern 1, and another sideboard 9 in two sideboards 9 is installed
In the end of the leak tank, two sideboards 9 can be adjusted up and down, for adjusting flow rate of water flow, meet different streams
Speed is required.
As shown in figure 1, in the present embodiment, the quantity of the leak tank is two, and two leak tanks are respectively
First leak tank 7 and the second leak tank 8, the gradient of the first leak tank 7 is 5 ‰~8 ‰, the second leak tank 8
Gradient be 5%~8%.
In actual experiment, the first leak tank 7 or the second leak tank 8 are used according to the selection of different hydraulic gradients first,
When the first leak tank 7 is selected, by the second leak tank 8 with the second leak tank 8 with the link position of cistern 1
Sideboard 9 and glass cement sealing；Open water pump 5, the size of control valve 4, by the fixed chaining pin 13 on main drainage channel 17
The water level discrepancy in elevation in main drainage channel 17 is read, water flow is determined, meanwhile, in order to measure the depth of water in the first leak tank 7, can
Height of water level is measured using movable chaining pin 11, in order to measure the water velocity in the first leak tank 7, can be carried out with Pitot tube 10
Measurement；Similarly, when the second leak tank 8 is selected, by the first leak tank 7 with installed in the first leak tank 7 and cistern 1
Sideboard 9 and glass cement sealing at link position；In actually used, detachable Pitot tube 10 and activity can be also used
Chaining pin 11, when the first leak tank 7 is selected, Pitot tube 10 and movable chaining pin 11 is arranged on the first leak tank 7, is elected to
When selecting the second leak tank 8, Pitot tube 10 and movable chaining pin 11 are arranged on the second leak tank 8, reduce cost.
In the present embodiment, the bottom of the leak tank is provided with three cracks 12, and the underface per crack 12 is all provided with
An assisted drainage canal 14 is equipped with, the activity for measuring the leak tank water level is mounted on each described leak tank and is surveyed
Pin 11 and the Pitot tube 10 for measuring the leak tank water flow, are mounted on for measuring on each assisted drainage canal 14
The fixed chaining pin 13 of the water level of assisted drainage canal 14 and the triangle weir 15 for measuring the water flow of assisted drainage canal 14,
The terminal position of main drainage channel 17 is provided with fixed chaining pin 13 for measuring the water level of main drainage channel 17 and for measuring main drainage channel
The design 16 of 17 water flows, realizes the real-time measurement of current water level and water flow.
Its headwater depth of assisted drainage canal 14 is measured by the tonicity for changing each crack 12, and calculates the crack 12 and burst water
Amount, meets under the conditions of different crack tonicity the measurement of water of being burst to raceway groove basement rock crack.
In the present embodiment, the inwall of the first leak tank 7 and the second leak tank 8 is by adhering to coarse granule sandstone
Mode carry out manually plus rough.
It should be noted that the flow of open-channel flow motion depends on discharge section area, the coefficient of roughness of raceway groove, waterpower
Radius and hydraulic gradient, according to actual conditions using manually plus it is rough by the way of determine the coefficient of roughness of raceway groove, in reality processing, adopt
With sandstone and cement mixing, sandstone and cement mixing face are rinsed with clear water before the cement has set., protrude coarse granule sandstone and increase
Plus the roughness of leak tank.
As shown in figures 1 and 3, in the present embodiment, the valve 4 is connected by ring flange 3 with feed pipe 2, the present embodiment
In, by the way of water pump 5 and valve 4 coordinate, the water flow for determining to supply water by the aperture of control valve 4.
As shown in figure 3, in the present embodiment, trapezoid-shaped openings are provided with the cistern 1, cistern 1 trapezoidal is opened by described
Mouth is connected with the leak tank, and in the present embodiment, the leak tank uses the leak tank of rectangular cross section, in rectangle
Trapezoid-shaped openings are used at the leak tank of section and the link position of cistern 1, is to reduce the shock oscillation of current, being conducive to
The stabilization of current.
Embodiment 1
In practical operation of the present invention, experiment porch is built according to model scale first, slope is selected according to different hydraulic gradients
The close leak tank of drop, in the present embodiment, the first leak tank 7 for selecting gradient to be 5 ‰~8 ‰ carries out water experiment of bursting,
Gradient value according to the first leak tank 7 calculates the hydraulic gradient J' of the first leak tank 7, determines history water flow, crack
12 positions and the cross dimensions of the first leak tank 7, the canal bottom width degree of the first leak tank 7 is b', the leak of artificial first
The coefficient of roughness n' of tank 7；
Control the crack tonicity and water flow of the first leak tank 7 and observe the routed water of the first leak tank 7, first
The timing of gradient one of leak tank 7, the routed water of the first leak tank 7 depends on including the crack tonicity of the first leak tank 7
And water flow, wherein, the water flow of the first leak tank 7 is divided into fixed water flow and does not fix water flow, when solid
The crack tonicity of fixed first leak tank 7, when fixing the water flow Q' of the first leak tank 7, due to the first leak tank 7
The timing of water flow one, according to formula Q'=A'v'=b'h'v', it is known that the measurement of movable chaining pin 11 on the first leak tank 7 the
Depth of water h' and Pitot tube 10 measure in the first leak tank 7 flow rate of water flow v' into anti-before first crack 12 in one leak tank 7
Than A' is the cross-sectional area of current in the first leak tank 7, the Level Change of sideboard 9 the on the first leak tank 7 of regulation
Flow rate of water flow v' in one leak tank 7, and the corresponding first leak tanks 7 of each flow rate of water flow v' are measured using movable chaining pin 11
First crack 12 before depth of water h', the water under each flow rate of water flow v' on main drainage channel 17 is obtained using design 16 respectively
Stream flow Q '1, three triangle weirs 15 are respectively adopted for each flow rate of water flow v' and obtain on three assisted drainage canals 14 of correspondence
Water flow Q'2, water flow Q '3With water flow Q'4, calculate on each lower three assisted drainage canals 14 of flow rate of water flow v'
Water flow sum Q'2+Q'3+Q'4, the water flow sum Q' on each lower three assisted drainage canals 14 of flow rate of water flow v'2+Q'3+
Q'4It is the routed water of the first leak tank 7 under respective conditions, water proportion of actually being burst under each flow rate of water flow v' of calculating
When the crack tonicity for fixing the first leak tank 7, the water flow Q of the first leak tank 7 is adjusted " when, open water
The water flow Q of the first leak of aperture regulation tank 7 of pump 5 and control valve 4 ", due to the water flow of the first leak tank 7
Do not fix, current in the first leak of the Level Change tank 7 of sideboard 9 on the first leak tank 7 are adjusted according to the actual requirements
Flow velocity v ", and using flow rate of water flow v in the first leak tank 7 of measurement of Pitot tube 10 ", each current stream is measured using movable chaining pin 11
The depth of water h before first crack 12 in the corresponding first leak tanks 7 of fast v " ", each water is obtained using design 16 respectively
Water flow Q under stream flow velocity v " on main drainage channel 17 "1, for each flow rate of water flow v " and three triangle weirs 15 are respectively adopted
Obtain the water flow Q on three assisted drainage canals 14 of correspondence "2, water flow Q "3With water flow Q "4, calculate each current stream
Water flow sum Q on the lower three assisted drainage canals 14 of fast v " "2+Q″3+Q″4, each flow rate of water flow v " and lower three assisted drainage canals
Water flow sum Q on 14 "2+Q″3+Q″4It is the routed water of the first leak tank 7 under respective conditions, calculates each flow rate of water flow
Actually burst under v " water proportion
As the water flow Q for fixing the first leak tank 7 " ', when adjusting the crack tonicity of the first leak tank 7, repeatedly adjust
The crack tonicity of the first leak tank 7 is saved, under the conditions of different crack tonicity, the first leak tank is adjusted for each crack tonicity
Flow rate of water flow v in the first leak of the Level Change tank 7 of sideboard 9 on 7 " ', and the first leak water is measured using Pitot tube 10
Flow rate of water flow v in groove 7 ", each flow rate of water flow v is measured using movable chaining pin 11 " ' first in corresponding first leak tank 7 split
Water flow on the lower main drainage channels 17 of depth of water h before seam 12 " ', each flow rate of water flow v is obtained respectively using design 16 " '
Q1" ', for each flow rate of water flow v " ' the water that three triangle weirs 15 are obtained on three assisted drainage canals 14 of correspondence is respectively adopted
Stream flow Q " '2, water flow Q " '3With water flow Q " '4, calculate each flow rate of water flow v " ' on lower three assisted drainage canals 14
Water flow sum Q " '2+Q″′3+Q″′4, each flow rate of water flow v " ' water flow sum Q on lower three assisted drainage canals 14 " '2
+Q″′3+Q″′4It is the routed water of the first leak tank 7 under respective conditions, calculates each flow rate of water flow v " ' lower actual routed water proportion
According to actual measurement data, comparative analysis different experiments data, analysis and summary flow, flow velocity, raceway groove fracture width
The influence of water size of being burst for raceway groove.
Embodiment 2
The present embodiment is as different from Example 1：Experiment porch is built according to model scale, is selected according to different hydraulic gradients
The close leak tank of gradient is selected, in the present embodiment, increases the gradient of leak tank, selection gradient is 5%~8% the second leakage
Water tank 8 carries out water experiment of bursting, and controls the crack tonicity and water flow of the second leak tank 8 and observes the second leak tank
8 routed water, calculates the routed water of reality of the experiment of the second leak tank 8, comparative analysis difference gradient experimental data, analysis and summary
Gradient data are burst the influence of water size for raceway groove, and experimentation is same as Example 1 with experimental technique.
The above, is only presently preferred embodiments of the present invention, and not the present invention is imposed any restrictions, every according to the present invention
Any simple modification, change and equivalent structure change that technical spirit is made to above example, still fall within skill of the present invention
In the protection domain of art scheme.
Claims (8)
1. burst based on mine earth's surface raceway groove flowing water the experimental technique of water experiment porch, the experiment porch include water-storing device,
Connected with the water-storing device and the leak tank with gradient and the main drainage channel (17) with leak tank cooperation, it is described
Multiple assisted drainage canals are provided between water-storing device and the main drainage channel (17) and on the downside of the leak tank
(14), the bottom of the leak tank be provided with a plurality of tonicity it is adjustable and with multiple assisted drainage canals (14) coordinate crack
(12), the two ends of the leak tank are provided with sideboard (9), are provided with for measuring the leakage on the leak tank
The movable chaining pin (11) of water tank water level and the Pitot tube (10) for measuring the leak tank water velocity, assisted drainage canal
(14) terminal position is provided with triangle weir (15), and main drainage channel (17) terminal position is provided with design (16), auxiliary
Help and be mounted on fixing chaining pin (13) on drainage ditch (14) and main drainage channel (17)；The water-storing device includes cistern (1), is
Feed pipe (2) and be arranged in cistern (1) and for the steady water grid of stable water supply pipe (2) water outlet that cistern (1) supplies water
(18), the water inlet end of the feed pipe (2) is provided with water pump (5), and the valve of control water size is provided with feed pipe (2)
(4)；Characterized in that, the experimental technique is comprised the following steps：
Step one, determine mine earth's surface raceway groove object and build experiment porch：First, it is determined that actual mine earth's surface raceway groove and leak
The model scale of tank；Then, cross dimensions according to actual mine earth's surface raceway groove, hydraulic gradient, history water flow and
Actual crack location, determines cross dimensions, hydraulic gradient, water flow and crack (12) position of leak tank, wherein, institute
State the cell wall of the cross dimensions including leak tank canal bottom width degree and leak tank of leak tank highly；
Step 2, the routed water for controlling the crack tonicity and water flow of leak tank and observing leak tank：By opening water
Pump (5), control valve (4) aperture control the water flow of the leak tank, when the crack tonicity of the fixation leak tank,
During the water flow of the fixation leak tank, step 201 is performed；When the crack tonicity of the fixation leak tank, institute is adjusted
When stating the water flow of leak tank, step 202 is performed；When the water flow of the fixation leak tank, the leak is adjusted
During the crack tonicity of tank, step 203 is performed；
Flow rate of water flow in leak tank described in sideboard (9) Level Change on step 201, the regulation leak tank, surveys
The depth of water before each crack (12) in the corresponding leak tank of each flow rate of water flow is measured, main row under each flow rate of water flow is obtained respectively
The water flow sum on water flow, multiple assisted drainages canal (14) on water channel (17), current stream in the leak tank
Speed is measured by Pitot tube (10), and the depth of water before first crack (12) in the leak tank passes through movable chaining pin (11) and surveys
, the water flow sum on multiple assisted drainage canals (14) is the routed water of leak tank；
Step 202, sideboard (9) height adjusted on the leak tank, open the aperture regulation of water pump and control valve
The water flow of the leak tank, measures flow rate of water flow in the leak tank, and measures first in the leak tank
The depth of water before crack (12), obtains the water flow on main drainage channel (17), the water flow on multiple assisted drainages canal (14)
Sum；
Step 203, the crack tonicity for adjusting the leak tank, the activity on the leak tank is adjusted for each crack tonicity
Flow rate of water flow in leak tank described in baffle plate (9) Level Change, and measure the corresponding leak tank of each flow rate of water flow
The depth of water before first crack (12), obtains water flow, the multiple auxiliary rows under each flow rate of water flow on main drainage channel (17) respectively
Water flow sum on water channel (14)；
Step 3, the actual routed water proportion of calculating, determine influence degree of each factor to actual routed water：By leak tank
In the ratio between water flow before the first crack (12) burst in water and leak tank calculation procedure two it is each under the conditions of reality
The routed water proportion in border, draws influence degree of each factor to actual routed water.
2. according to the experimental technique of the water experiment porch of being burst based on mine earth's surface raceway groove flowing water described in claim 1, its feature
It is：The water flow on main drainage channel (17), step 201 are obtained by design (16) in step 201 to step 203
The water flow on assisted drainage canal (14) is obtained by triangle weir (15) into step 203.
3. according to the experimental technique of the water experiment porch of being burst based on mine earth's surface raceway groove flowing water described in claim 1, its feature
It is：The end of the assisted drainage canal (14) and main drainage channel (17) is provided with backflow pool (6), and water pump (5) is arranged on backflow
In pond (6).
4. according to the experimental technique of the water experiment porch of being burst based on mine earth's surface raceway groove flowing water described in claim 3, its feature
It is：The quantity of the leak tank is multiple, and the gradient of multiple leak tanks is different.
5. according to the experimental technique of the water experiment porch of being burst based on mine earth's surface raceway groove flowing water described in claim 4, its feature
It is：The quantity of the leak tank is two, and two leak tanks are respectively the first leak tank (7) and the second leak
Tank (8), the gradient of the first leak tank (7) is 5 ‰~8 ‰, and the gradient of the second leak tank (8) is 5%~8%.
6. according to the experimental technique of the water experiment porch of being burst based on mine earth's surface raceway groove flowing water described in claim 5, its feature
It is：The inwall of the first leak tank (7) and the second leak tank (8) is carried out by way of adhering to coarse granule sandstone
It is manually plus rough.
7. according to the experimental technique of the water experiment porch of being burst based on mine earth's surface raceway groove flowing water described in claim 1, its feature
It is：The valve (4) is connected by ring flange (3) with feed pipe (2).
8. according to the experimental technique of the water experiment porch of being burst based on mine earth's surface raceway groove flowing water described in claim 4, its feature
It is：Trapezoid-shaped openings are provided with the cistern (1), cistern (1) is coordinated by the trapezoid-shaped openings with the leak tank
Connection.
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| CN1737337A (en) * | 2004-08-19 | 2006-02-22 | 神华集团有限责任公司 | Water preventing method for mine in structure of thin base rock and thick loose aquifer |
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| CN109000731B (en) * | 2018-08-07 | 2019-09-10 | 武汉大学 | The experimental rig and method that research inlet for stom water chocking-up degree influences water discharged amount |
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