CN104879168B - A kind of coal seam high pressure water injection intelligent monitor system and its intelligent control method - Google Patents
A kind of coal seam high pressure water injection intelligent monitor system and its intelligent control method Download PDFInfo
- Publication number
- CN104879168B CN104879168B CN201510247293.8A CN201510247293A CN104879168B CN 104879168 B CN104879168 B CN 104879168B CN 201510247293 A CN201510247293 A CN 201510247293A CN 104879168 B CN104879168 B CN 104879168B
- Authority
- CN
- China
- Prior art keywords
- central control
- machine structure
- control machine
- water injection
- hydraulic pressure
- 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
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a kind of coal seam high pressure water injection intelligent monitor system and its intelligent control method.High pressure water injection intelligent monitor system includes monitoring sensor-based system, hydraulic pressure feed system and central control machine structure.High pressure water injection intelligent control method is based on high pressure water injection intelligent monitor system, real-time monitoring hydraulic pressure feed system, the data message collected is sent to central control machine structure by monitoring sensor-based system, judge whether the situation that " branch road is metalled run out ", " ultra-low quantity of flow, ultralow hydraulic pressure " and " hydropenia early warning " occurs, and real-time detection water filling coal seam crustal stress, it is converted into control signal after central control machine structure Treatment Analysis, control monitoring sensor-based system and hydraulic pressure feed system.Thus effectively reducing the impacts to coal seam high pressure water injection for the phenomenon such as " metalling run out ", " ultra-low quantity of flow, ultralow hydraulic pressure ", effectively improve flood effectiveness.
Description
Technical field
The present invention relates to a kind of coal-bed flooding monitoring system, more particularly, to a kind of coal seam high pressure water injection intelligent monitor system and
Its intelligent control method.
Background technology
With coal adopt deep be continuously increased and the stepping up of mechanization production level, present in coal production process
The natural disaster extent of injury such as dust, bump, coal and gas prominent, ground temperature is constantly upgraded, especially coal work flour
Dirt, bump harm have seriously threatened the safety in production of mine and the physical and mental health of miner.
Practice at home and abroad proves, coal-bed flooding is fundamentally to solve the safety such as dust, bump, coal and gas prominent
The effective ways of problem, all play a good role with processing for the dangerous prevention and control of downhole area.By boring to coal
Body notes water under high pressure in advance it is simply that changing coal rock deformation state by increasing water saturation degree in coal seam moisture content or coal seam, i.e. profit
With press water to the fracturing of plane of weakness, wash away and wedge and water are to the physics of coal body, chemical action, make coal and rock original
Crack expands, produces new crack, destroys coal and rock globality, reduces its intensity, and release coal body pressure is not so as to occur unstability to break
Bad, thus effectively preventing the generation of bump accident.Additionally, injecting the water penetration of coal body and being stored in crack and hole,
Increased coal body moisture, moistened primary coal dust in coal body so as to lose the ability of flying upward, reduce and when producing, produce the dust that swims
Ability.
However, coal seam high pressure water injection, as a disaster process for comprehensively treating, lacks the research of intellectual monitoring control aspect,
Lead to the coal seam infusion effect of China's coal mines poor.At present, underground coal mine produces especially deep high-ground stress hardly possible water filling coal seam
It is badly in need of a kind of coal-bed flooding intelligent monitor system that can recognize charging state under different condition, thus coal seam note can be automatically adjusted
The basic parameters such as water pressure, flow, thus realize erosion control, multiple effect of taking precautions against natural calamities of depositing dust, exclusion gas and cooling effectively.
Content of the invention
In order to solve the deficiencies in the prior art, the present invention proposes a kind of coal seam high pressure water injection intelligent monitor system and its intelligence
Can monitoring method.Based on high pressure water injection intelligent monitor system, realize " branch road is metalled run out " detection, " ultra-low quantity of flow, ultralow hydraulic pressure " inspection
Survey and " hydropenia early warning ", strengthen coal seam infusion effect.
The present invention adopts the following technical scheme that：
A kind of coal seam high pressure water injection intelligent monitor system is it is characterised in that include monitoring sensor-based system, hydraulic pressure supply system
System and central control machine structure, described monitoring sensor-based system includes detecting main line and one or more detection branch arranged side by side, inspection
Survey main line to be arranged on water filling main line, detection branch is arranged on water filling branch road；
Described hydraulic pressure feed system includes the water injection pressure pump for improving water injection pressure, and the input of water injection pressure pump is even
Water receiving case, is provided with liquid level sensor in water tank, the outfan of water injection pressure pump connects water filling main line；
Between described monitoring sensor-based system and hydraulic pressure feed system, the high pressure forming closed loop is connected by central control machine structure
Water filling intelligent monitor system, the data message collected is sent to central control machine structure, by central control by monitoring sensor-based system
It is converted into control signal after mechanism's Treatment Analysis and acts on hydraulic pressure feed system, thus the working condition changing water injection pressure pump is adjusted
Section water injection pressure, and regulate and control the injection flow of water filling main line and water filling branch road in monitoring sensor-based system.
Preferably, described detection main line includes being sequentially connected traffic monitoring mechanism, hydraulic pressure monitor control mechanism and there is aperture
Main line electromagnetic valve, described detection branch include single hole flow transducer, single hole hydraulic pressure sensor and have aperture branch road electricity
Magnet valve；
Described central control machine structure passes through to adjust the rotating speed of frequency conversion mechanism change motor and controls electricity by vacuum starter
The start and stop of machine, thus the working condition changing water injection pressure pump adjusts water injection pressure.
Preferably, described hydraulic pressure feed system also includes motor for the operating of water injection pressure pump, is used for adjusting motor and turns
The frequency conversion mechanism of speed, the vacuum starter for controlled motor unlatching and the crustal stress for monitoring stress of coal seam situation of change
Mechanism for monitoring；
Described water injection pressure pump connects motor, motor connection frequency conversion mechanism, and frequency conversion mechanism connects central control machine structure, central authorities
Controlling organization is also connected with in-situ stress monitoring mechanism, and in-situ stress monitoring mechanism connects motor, vacuum starter by vacuum starter
Mechanism connects simultaneously with frequency conversion, and hydraulic pressure feed system runs well；
Described central control machine structure passes through to adjust main line electromagnetic valve and the aperture of a way solenoid valve adjusts injection flow.
Preferably, described water injection pressure pump is also associated with single hole flow transducer, described single hole flow transducer is even
Connect central control machine and be configured to water injection pressure pump discharge mechanism for monitoring, water injection pressure pump discharge mechanism for monitoring is used for real-time detection pressure
The working condition of power pump.
Preferably, described central control machine structure is also associated with grasping the actual feelings of coal-bed flooding in real time for surface personnel
The ground monitoring room of condition, data message is directly sent to ground monitoring room by central control machine structure.
A kind of high pressure water injection intelligent control method, described high pressure water injection intelligent control method is intelligently supervised with above-mentioned high pressure water injection
Based on control system, real-time monitoring hydraulic pressure feed system, the data message collected is sent to central authorities' control by monitoring sensor-based system
Mechanism processed, judges whether the situation " branch road is metalled run out ", " ultra-low quantity of flow, ultralow hydraulic pressure " and " hydropenia early warning ", and examines in real time
Survey water filling coal seam crustal stress, after central control machine structure Treatment Analysis, be converted into control signal, control monitoring sensor-based system and hydraulic pressure
Feed system.
Further, the judgement of described appearance " branch road is metalled run out " situation and process adopt following steps：
(1) the single hole flow transducer of detection branch monitors that a certain water filling bypass flow persistently exceeds normal injection flow
Threshold range, and central control machine structure normal reaction control 2～3 times after when being not improved, central control machine structure will be preliminary
Judge the reason lead to this abnormal phenomena as " branch road is metalled run out "；
(2) stop providing voltage signal to this way solenoid valve, if other way solenoid valve binding posts all export therewith
0V voltage signal, central control machine structure then cuts off vacuum starter current path immediately, and hydraulic pressure feed system quits work；
(3), after some minutes, central control machine structure connects vacuum starter path the electricity at least one water filling branch road
Magnet valve provides normal working voltage signal, and after continuing for some time, central control machine structure recovers the normal of all branches electromagnetic valve
Running voltage signal, hydraulic pressure feed system continues to run with；
(4) through step (3), if single hole flow transducer monitors this bypass flow abnormal data again, central authorities control
Mechanism will repeat 3～5 steps (2), if single hole flow transducer does not monitor this bypass flow abnormal data, water filling branch road is extensive
Multiple normal, if hereafter central control machine structure obtains valid data information not yet, confirm that " metalling run out " phenomenon in this branch road；
(5) central control machine structure cuts off the normal working voltage signal of this way solenoid valve immediately, earthward monitors simultaneously
System sends branch road and metals run out alarm；
(6) if central control machine structure finally confirms that phenomenon of metalling run out all in all branches, cut off vacuum starter immediately
Path, hydraulic pressure feed system is out of service, and earthward monitoring system continuously send out branch road " metal run out " alarm with timely obtain appropriate
Conduct oneself well reason.
Further, the judgement of described appearance " ultra-low quantity of flow, ultralow hydraulic pressure " situation and process adopt following steps：
A, water filling main line flow are less than 1.5m3During/h, traffic monitoring authorities abnormal data information, if now hydraulic pressure prison
Control mechanism monitors main line water injection pressure subnormal pressure threshold value simultaneously, and central control machine structure can be simultaneously received to flow automatically
Amount monitor control mechanism and the abnormal data information of hydraulic pressure monitor control mechanism, central control machine structure is directed to such phenomenon and on the one hand adjusts frequency conversion
Mechanism increases motor speed so that water injection pressure pump improves water injection pressure, on the other hand adjusts the main line electromagnetic valve with aperture
Closure degree, thus increasing the injection flow on main line；
B, central control machine structure will repeat aforesaid operations 2～3 times, after overregulating, if injection flow and pressure are low
Phenomenon is not improved, and this phenomenon preliminary judgement is " ultra-low quantity of flow, ultralow hydraulic pressure " by central control machine structure；
C, central control machine structure cut off the current path of vacuum starter, and hydraulic pressure feed system quits work, and treats 5～10 points
Zhong Hou, central control machine structure recovers the current path of vacuum starter, and hydraulic pressure feed system runs again, central control machine structure weight
After multiple aforesaid operations 3～5 times, if injection flow and the low phenomenon of pressure not yet be improved significantly, central control machine structure will be really
Recognize hydraulic pressure feed system and " ultra-low quantity of flow, ultralow hydraulic pressure " phenomenon occurs；
D, cut off vacuum starter current path immediately for this phenomenon central control machine structure, water injection pressure pump stops work
Make, simultaneously central control machine structure earthward monitoring system continuously send out " ultra-low quantity of flow, ultralow hydraulic pressure " alarm with timely obtain appropriate
Conduct oneself well reason.
Further, the judgement of described appearance " hydropenia early warning " situation and process adopt following steps：
1., when the water level in water tank is close to water filling liquid level lower limit, this data message is fed back to central authorities by liquid level sensor
Controlling organization, central control machine structure sends " hydropenia early warning " immediately, and this information is sent to ground monitoring system further；
2., when in water tank, water level falls further below liquid level lower limit, central control machine structure timely receives liquid level
The data feedback of sensor, immediate command vacuum starter cuts off water injection pressure pump electric current, and water injection pressure pump shuts down therewith,
And earthward monitoring system sends " hydropenia " alarm；
3., when the water level in water tank gradually rises up to liquid level lower limit, liquid level sensor real-time monitoring water level converts, central authorities
Controlling organization releases " hydropenia " alarm, but does not recover the order that vacuum starter starts water injection pressure pump；
4., when in water tank, water level reaches the liquid level upper limit, central control machine structure recovers vacuum starter and starts water injection pressure
Pump order, hydraulic pressure feed system recovers normal and runs.
Further, described water filling coal seam crustal stress is monitored by the in-situ stress monitoring mechanism in hydraulic pressure feed system, when
After the high pressure water injection of coal seam, water filling coal mass relief simultaneously produces crack, and data signal is sent to central control by in-situ stress monitoring mechanism
Mechanism；
Be depressed into 10～15MPa when coal seam vertical stress unloads, or coal seam vertical stress reduction rate close to 50% when, central authorities control
Mechanism makes a response in time for this signal, and order vacuum starter cuts off water injection pressure pump electric current, and coal-bed flooding mode will be by
Dynamical pressure water infusion is changed into static pressure water filling, makes water flooding regime meet the demand of water filling coal seam crustal stress change.
Using the Advantageous Effects that as above technical scheme obtains it is：
The present invention pass through to monitor interaction between sensor-based system, hydraulic pressure feed system and central control machine structure it is ensured that
Injection flow and water injection pressure in water filling main line pipeline and each water filling bypass line during difficult water filling coal seam high pressure water injection
Effectiveness, thus effectively reduce the impacts to high pressure water injection effect for the phenomenon such as " metalling run out ", " ultra-low quantity of flow, ultralow hydraulic pressure ".More
Importantly, by the change monitoring crustal stress suffered by water filling coal body, water filling side can be adjusted according to coal body actual stress state
Formula, it is ensured that effective conversion of coal-bed flooding mode, improves the water filling quality in difficult water filling coal seam conscientiously.
Brief description
Fig. 1 is high pressure water injection intelligent monitor system schematic diagram.
In figure, A, monitoring sensor-based system；B, hydraulic pressure feed system；1st, traffic monitoring mechanism；2nd, hydraulic pressure monitor control mechanism；3rd, have
There is the main line electromagnetic valve of aperture；4th, single hole flow transducer；5th, single hole hydraulic pressure sensor；6th, there is a way solenoid valve of aperture；
7th, central control machine structure；8th, frequency conversion mechanism；9th, in-situ stress monitoring mechanism；10th, vacuum starter；11st, motor；12nd, water injection pressure
Pump；13rd, water tank；14th, liquid level sensor；15th, ground monitoring system.
Specific embodiment
In order that the purpose of the present invention, technical scheme and advantage become apparent from, clearly, below with reference to accompanying drawing 1, to this
Bright further description.
High pressure water injection intelligent monitor system includes monitoring sensor-based system A, hydraulic pressure feed system B and central control machine structure 7.
Monitoring sensor-based system includes detecting main line and three detection branch arranged side by side, and detection main line is arranged on water filling main line
On, detection branch is arranged on water filling branch road.Described detection main line includes traffic monitoring mechanism 1, the hydraulic pressure monitoring being sequentially connected
Mechanism 2 and the main line electromagnetic valve 3 with aperture, described detection branch includes single hole flow transducer 4, single hole hydraulic pressure sensor
5 and the way solenoid valve 6 with aperture.
Hydraulic pressure feed system includes the water injection pressure pump 12 for improving water injection pressure, and the input of water injection pressure pump 12 is even
Water receiving case 13, is provided with liquid level sensor 14 in water tank, liquid level sensor 14 connects central control machine structure 7, and central control machine structure 7 is real
When detection water tank in water level height.The outfan of water injection pressure pump connects water filling main line.Hydraulic pressure feed system also include for
Water injection pressure pump 12 operating motor 11, for adjust motor 11 rotating speed frequency conversion mechanism 8, for controlled motor 11 open true
Empty trigger 10 and the in-situ stress monitoring mechanism 9 for monitoring stress of coal seam situation of change.Water injection pressure pump 12 connects motor
11, motor 11 connects frequency conversion mechanism 8, and frequency conversion mechanism 8 connects central control machine structure 7, and central control machine structure 7 is also connected with crustal stress prison
Survey mechanism 9, in-situ stress monitoring mechanism 9 connects motor 11 by vacuum starter 10, vacuum starter 10 is with frequency conversion mechanism 8 simultaneously
Connection, hydraulic pressure feed system B runs well.
Between monitoring sensor-based system A and hydraulic pressure feed system B, the high pressure forming closed loop is connected by central control machine structure 7
Water filling intelligent monitor system, the data message collected is sent to central control machine structure, by central control by monitoring sensor-based system
It is converted into control signal after mechanism's Treatment Analysis and acts on hydraulic pressure feed system, thus the working condition changing water injection pressure pump is adjusted
Section water injection pressure, and injection flow is adjusted by the aperture adjusting main line electromagnetic valve and a way solenoid valve.
Central control machine structure passes through to adjust the rotating speed of frequency conversion mechanism change motor and by vacuum starter controlled motor
Start and stop, thus the working condition changing water injection pressure pump adjusts water injection pressure.Central control machine structure is also associated with for ground work
Make the ground monitoring room that personnel grasp coal-bed flooding practical situation in real time, data message is directly sent to ground by central control machine structure
Face Control Room.
It should be noted that there are two control circuits between motor in central control machine structure and hydraulic pressure feed system,
One passes through frequency conversion mechanism controlled motor rotating speed for central control machine structure, thus changing pressure of supply water；Another for in-situ stress monitoring machine
The crustal stress collected variable signal is sent to central control machine structure by structure, and central control machine structure is identified locating for this signal
Reason, changes the working condition of vacuum starter further, so that it is determined that the startup of motor is whether.Only two lines road is formed simultaneously
During path, water injection pressure pump just can run well, and now carries out dynamical pressure water infusion, if that of in-situ stress monitoring mechanism place leads to
Road disconnects, and illustrates that difficult water filling coal seam has been unloaded and is depressed into a certain degree, is changed according to practical situation water flooding regime, proceed by quiet
Pressure injection water.
There are between motor in central control machine structure and hydraulic pressure feed system two control circuits, one is central control machine
Structure passes through frequency conversion mechanism controlled motor rotating speed, thus changing pressure of supply water, one is that in-situ stress monitoring mechanism should by the ground collected
Power variable signal is sent to central control machine structure, and central control machine structure is identified processing for this signal, changes true further
The working condition of empty trigger, so that it is determined that the startup of motor is whether, when only two lines road forms path simultaneously, water injection pressure
Pump just can run well, and now carries out dynamical pressure water infusion, and that path that otherwise in-situ stress monitoring mechanism is located disconnects, and difficult note is described
Water coal seam has been unloaded and has been depressed into a certain degree, is changed according to practical situation water flooding regime, proceeds by static pressure water filling.
Single hole flow transducer is also associated with water injection pressure pump, described single hole flow transducer connects central control machine
It is configured to water injection pressure pump discharge mechanism for monitoring, water injection pressure pump discharge mechanism for monitoring is used for the work shape of real-time detection compression pump
State.Water injection pressure failure of pump is avoided to affect the normal work of high pressure water injection intelligent monitor system.
Based on above-mentioned high pressure water injection intelligent monitor system, real-time monitoring hydraulic pressure supplies high pressure water injection intelligent control method
System, monitoring sensor-based system the data message collected is sent to central control machine structure, judge whether occur " branch road is metalled run out ",
" ultra-low quantity of flow, ultralow hydraulic pressure " and the situation of " hydropenia early warning ", and real-time detection water filling coal seam crustal stress, central control machine structure
It is converted into control signal after Treatment Analysis, control monitoring sensor-based system and hydraulic pressure feed system.
Embodiment：The judgement of " branch road is metalled run out " phenomenon is processed
For example, high pressure water injection is carried out to difficult water filling coal seam, its hydraulic pressure feed system mainly includes water filling main line Y and water filling is propped up
Road y1, y2, y3.During high pressure water injection, traffic monitoring mechanism, hydraulic pressure monitor control mechanism monitor respectively discharge in water filling main line,
And the situation of change of water injection pressure, single hole flow transducer and single hole hydraulic pressure sensor are then respectively directed to current in each water filling branch road
The situation of change of amount and water injection pressure carries out real-time monitoring.As water filling branch road y1Flow exceedes normal discharge threshold value 5m3During/h, single
Hole flow transducer passes through data collection, monitors abnormal data information and is sent to central control machine structure, central control machine structure
It is analyzed processing for this abnormal data, and implements counter-measure and reduce y1Prop up the aperture of way solenoid valve and suitably increase y2、
y3、y4Prop up the aperture of way solenoid valve, thus reducing y1Branch road injection flow, increase y2、y3、y4Branch road injection flow, realizes each
The balance of road injection flow.
However, after above-mentioned process, y1Branch road injection flow still persistently exceeds normal injection flow threshold range, single hole
Flow transducer persistently receives and transmits abnormal data information to central control machine structure, and central control machine structure is directed to this phenomenon to be repeated
After 2～3 above-mentioned counter-measures, if single hole flow transducer does not receive normal data signal again, that is, bypass flow is different
Often do not make moderate progress with the adjustment effect of a way solenoid valve.Now, preliminary judgement is led to this by central control machine structure
The reason abnormal phenomena is " branch road is metalled run out ".Central control machine structure will stop to y first for " metalling run out " phenomenon1Prop up way solenoid valve
There is provided voltage signal, if y1～y3Prop up way solenoid valve binding post and all export 0V voltage signal, central control machine structure then cuts off immediately
Vacuum starter current path, necessary to now water injection pressure pump operating, one of path disconnects, and water injection pressure pump quits work.
After N minute, central control machine structure connection vacuum starter path to y2～y3In the way solenoid valve of at least one branch road provide
Normal working voltage signal, after continuing for some time, central control machine structure recovers y1Prop up the normal working voltage letter of way solenoid valve
Number, hydraulic pressure feed system continues to run with.
Through above-mentioned counter-measure, if now single hole flow transducer monitors Traffic Anomaly data again, central authorities control
Mechanism will continue to repeat above-mentioned measure.After processing through 3～5 Traffic Anomaly replies, central control machine structure does not obtain significant figure yet
It is believed that breath, illustrate that reply is had no result, now central control machine structure confirms y1Branch road occur " metalling run out " phenomenon, and immediately cutting needle to y1
Prop up the normal working voltage signal of way solenoid valve, earthward monitoring system sends y simultaneously1Branch road is metalled run out alarm.If central authorities control
Mechanism finally confirms y1～y3All phenomenon of metalling run out in branch road, then cut off vacuum starter path immediately, and hydraulic pressure feed system stops
Run, and earthward monitoring system continuously sends out branch road and " metals run out " alarm, is dealt carefully with timely acquisition.
Embodiment：The judgement of " ultra-low quantity of flow, ultralow hydraulic pressure " phenomenon is processed
Similar, traffic monitoring mechanism real-time monitoring water filling main line changes in flow rate, when water filling main line flow is less than 1.5m3/h
When, traffic monitoring authorities abnormal data information, if now hydraulic pressure monitor control mechanism monitors that main line water injection pressure is less than simultaneously
Normal pressure threshold value, then abnormal information is fed back to central control machine structure by traffic monitoring mechanism and hydraulic pressure monitor control mechanism, for
Such abnormal data information, on the one hand central control machine structure adjusts frequency conversion mechanism increases motor speed so that water injection pressure pump carries
High water injection pressure, on the other hand adjusts the closure degree of the main line electromagnetic valve with aperture, thus increasing the injection flow on main line.
Central control machine structure will repeat aforesaid operations 2～3 times, after overregulating, if injection flow and the low phenomenon of pressure are
To improving, this phenomenon preliminary judgement is " ultra-low quantity of flow, ultralow hydraulic pressure " by central control machine structure.Now, central control machine structure is cut
The current path of disconnected vacuum starter, hydraulic pressure feed system quits work.After 5～10 minutes, central control machine structure recovers true
The current path of empty trigger, hydraulic pressure feed system runs again, after central control machine structure repeats aforesaid operations 3～5 times, if note
Discharge and the low phenomenon of pressure not yet be improved significantly, it is " super that central control machine structure will confirm that hydraulic pressure feed system occurs
Low discharge, ultralow hydraulic pressure " phenomenon, cuts off vacuum starter current path, water filling pressure immediately for this phenomenon central control machine structure
Power pump shuts down, and earthward monitoring system continuously sends out " ultra-low quantity of flow, ultralow hydraulic pressure " alarm to central control machine structure simultaneously, with
Obtain in time and deal carefully with.
Embodiment：The realization of " hydropenia early warning "
Water source used by the high pressure water injection of coal seam be derived from water tank, in order to ensure coal seam high pressure water injection work normal, carry out in order,
Within the scope of should ensure that in water tank, water level is in effective liquid level all the time, therefore, setting liquid level sensor in water tank.When in water tank
Water level close to liquid level lower limit when, this data message is fed back to central control machine structure by liquid level sensor, and central control machine structure is immediately
Send " hydropenia early warning " information, and this information is sent to ground monitoring system further；When in water tank, water level reduces further
To during less than liquid level lower limit, central control machine structure timely receives the data feedback of liquid level sensor, for this data, central authorities' control
Mechanism processed cuts off vacuum starter current path immediately, and hydraulic pressure feed system quits work therewith, and earthward monitoring system is sent out
Go out " hydropenia " alarm.When the water level in water tank gradually rises up to liquid level lower limit, liquid level sensor real-time monitoring water level converts, in
Centre controlling organization releases " hydropenia " alarm, but does not recover vacuum starter current path；When in water tank, water level is up to liquid
During the upper limit of position, central control machine structure recovers vacuum starter current path, and hydraulic pressure feed system recovers normal and runs.
Embodiment：The detection of water filling coal seam crustal stress
Be gradually injected coal body with water under high pressure, the mechanical property of coal body occurs significant changes therewith, its elasticity can and intensity
Gradually reduce, plasticity progressively strengthens, due to the injection of water under high pressure, coalmass crevasse is developed, coal seam pressure relief.When coal seam pressure relief is to certain
After degree, in hydraulic pressure feed system, the situation of change of coal seam crustal stress will be known in in-situ stress monitoring mechanism, and this signal is transmitted
To central control machine structure.After central control machine structure is analyzed to information such as coal seam crustal stress rates of change, if coal seam vertical stress
Rate of change more than more than 50% then it is assumed that now coal-bed flooding region release effect preferably, central control machine structure will cut off vacuum
Trigger current path, high pressure water-injection pump is out of service therewith, and coal-bed flooding mode is changed into static pressure water filling by dynamical pressure water infusion, should
Function can under effective guarantee coal body different stress water filling effective enforcement, significantly improve coal-bed flooding quality.
In sum, the present invention is mutual between sensor-based system, hydraulic pressure feed system and central control machine structure by monitoring
Effect is it is ensured that injection flow and note in water filling main line pipeline and each water filling bypass line during difficult water filling coal seam high pressure water injection
The effectiveness of water pressure it is often more important that, by monitoring the change of crustal stress suffered by water filling coal body, can answer according to coal body is actual
Power state adjustment water flooding regime, it is ensured that effective conversion of coal-bed flooding mode, improves the water filling matter in difficult water filling coal seam conscientiously
Amount.
Certainly, only presently preferred embodiments of the present invention described above, the present invention is not limited to enumerate above-described embodiment, should
When explanation, any those of ordinary skill in the art are under the guidance of this specification, all equivalent substitutes of being made, bright
Aobvious variant, all falls within the essential scope of this specification, ought to be protected by the present invention.
Claims (8)
1. a kind of coal seam high pressure water injection intelligent monitor system it is characterised in that include monitoring sensor-based system, hydraulic pressure feed system,
And central control machine structure, described monitoring sensor-based system includes detecting main line and one or more detection branch arranged side by side, detects dry
Road is arranged on water filling main line, and detection branch is arranged on water filling branch road；
Described hydraulic pressure feed system includes the water injection pressure pump for improving water injection pressure, and the input of water injection pressure pump connects water
Case, is provided with liquid level sensor in water tank, the outfan of water injection pressure pump connects water filling main line；
Between described monitoring sensor-based system and hydraulic pressure feed system, the high pressure water injection forming closed loop is connected by central control machine structure
Intelligent monitor system, the data message collected is sent to central control machine structure, by central control machine structure by monitoring sensor-based system
It is converted into control signal after Treatment Analysis and acts on hydraulic pressure feed system, thus the working condition changing water injection pressure pump adjusts note
Water pressure, and regulate and control the injection flow of water filling main line and water filling branch road in monitoring sensor-based system；
Described detection main line includes traffic monitoring mechanism, hydraulic pressure monitor control mechanism and the main line electromagnetism with aperture being sequentially connected
Valve, described detection branch includes single hole flow transducer, single hole hydraulic pressure sensor and a way solenoid valve with aperture；
Described central control machine structure passes through to adjust the rotating speed of frequency conversion mechanism change motor and by vacuum starter controlled motor
Start and stop, thus the working condition changing water injection pressure pump adjusts water injection pressure；
Described hydraulic pressure feed system also includes the motor for the operating of water injection pressure pump, the frequency changer for adjusting motor speed
Structure, the vacuum starter for controlled motor unlatching and the in-situ stress monitoring mechanism for monitoring stress of coal seam situation of change；
Described water injection pressure pump connects motor, motor connection frequency conversion mechanism, and frequency conversion mechanism connects central control machine structure, and central authorities control
Mechanism is also connected with in-situ stress monitoring mechanism, and in-situ stress monitoring mechanism connects motor, vacuum starter and change by vacuum starter
Frequency mechanism connects simultaneously, and hydraulic pressure feed system runs well；
Described central control machine structure passes through to adjust main line electromagnetic valve and the aperture of a way solenoid valve adjusts injection flow.
2. a kind of coal seam high pressure water injection intelligent monitor system according to claim 1 is it is characterised in that described water injection pressure
Single hole flow transducer is also associated with pump, described single hole flow transducer connects central control machine and is configured to water injection pressure pump
Flow monitoring mechanism, water injection pressure pump discharge mechanism for monitoring is used for the working condition of real-time detection compression pump.
3. a kind of coal seam high pressure water injection intelligent monitor system according to claim 1 is it is characterised in that described central authorities control
Mechanism is also associated with grasping the ground monitoring room of coal-bed flooding practical situation, central control machine structure in real time for surface personnel
Directly data message is sent to ground monitoring room.
4. a kind of high pressure water injection intelligent control method is it is characterised in that described high pressure water injection intelligent control method is with claim 1
Based on described high pressure water injection intelligent monitor system, real-time monitoring hydraulic pressure feed system, monitoring sensor-based system will be collected
Data message is sent to central control machine structure, judges whether " branch road is metalled run out ", " ultra-low quantity of flow, ultralow hydraulic pressure " and " hydropenia
The situation of early warning ", and real-time detection water filling coal seam crustal stress, are converted into control signal after central control machine structure Treatment Analysis, control
System monitoring sensor-based system and hydraulic pressure feed system.
5. " branch road runs a kind of high pressure water injection intelligent control method according to claim 4 it is characterised in that described appearance
The judgement of water " situation and process adopt following steps：
(1) the single hole flow transducer of detection branch monitors that a certain water filling bypass flow persistently exceeds normal injection flow threshold value
Scope, and central control machine structure normal reaction control 2～3 times after when being not improved, central control machine structure will tentatively judge
The reason lead to this abnormal phenomena is " branch road is metalled run out "；
(2) stop providing voltage signal to this way solenoid valve, if other way solenoid valve binding posts all export 0V electricity therewith
Pressure signal, central control machine structure then cuts off vacuum starter current path immediately, and hydraulic pressure feed system quits work；
(3), after some minutes, central control machine structure connects vacuum starter path the electromagnetic valve at least one water filling branch road
There is provided normal working voltage signal, after continuing for some time, central control machine structure recovers the normal work of all branches electromagnetic valve
Voltage signal, hydraulic pressure feed system continues to run with；
(4) through step (3), if single hole flow transducer monitors this bypass flow abnormal data, central control machine structure again
3～5 steps (2) will be repeated, if single hole flow transducer does not monitor this bypass flow abnormal data, water filling branch road just recovers
Often, if hereafter central control machine structure obtains valid data information not yet, confirm that " metalling run out " phenomenon in this branch road；
(5) central control machine structure cuts off the normal working voltage signal of this way solenoid valve immediately, simultaneously earthward monitoring system
Send branch road to metal run out alarm；
(6) if central control machine structure finally confirms that phenomenon of metalling run out all in all branches, cut off vacuum starter path immediately,
Hydraulic pressure feed system is out of service, and earthward monitoring system is continuously sent out branch road alarm of " metalling run out " and properly located with timely acquisition
Reason.
6. a kind of high pressure water injection intelligent control method according to claim 4 is it is characterised in that described appearance " ultralow stream
The judgement of amount, ultralow hydraulic pressure " situation and process adopt following steps：
A, water filling main line flow are less than 1.5m3During/h, traffic monitoring authorities abnormal data information, if now hydraulic pressure monitoring equipment
Structure monitors main line water injection pressure subnormal pressure threshold value simultaneously, and central control machine structure can be simultaneously received from flow prison
Control mechanism and the abnormal data information of hydraulic pressure monitor control mechanism, central control machine structure is directed to such phenomenon and on the one hand adjusts frequency conversion mechanism
Increase motor speed so that water injection pressure pump improves water injection pressure, on the other hand adjust closing of the main line electromagnetic valve with aperture
Conjunction degree, thus increase the injection flow on main line；
B, central control machine structure will repeat aforesaid operations 2～3 times, after overregulating, if injection flow and the low phenomenon of pressure
Do not improved, this phenomenon preliminary judgement is " ultra-low quantity of flow, ultralow hydraulic pressure " by central control machine structure；
C, central control machine structure cut off the current path of vacuum starter, and hydraulic pressure feed system quits work, and treats 5～10 minutes
Afterwards, central control machine structure recovers the current path of vacuum starter, and hydraulic pressure feed system runs again, and central control machine structure repeats
After aforesaid operations 3～5 times, if injection flow and the low phenomenon of pressure not yet be improved significantly, central control machine structure will confirm that
" ultra-low quantity of flow, ultralow hydraulic pressure " phenomenon in hydraulic pressure feed system；
D, cut off vacuum starter current path immediately for this phenomenon central control machine structure, water injection pressure pump quits work, with
When central control machine structure earthward monitoring system is continuously sent out " ultra-low quantity of flow, ultralow hydraulic pressure " alarm and is properly located with timely acquisition
Reason.
7. a kind of high pressure water injection intelligent control method according to claim 4 it is characterised in that described appearance " hydropenia is pre-
The judgement of police " situation and process adopt following steps：
1., when the water level in water tank is close to water filling liquid level lower limit, this data message is fed back to central control by liquid level sensor
Mechanism, central control machine structure sends " hydropenia early warning " immediately, and this information is sent to ground monitoring system further；
2., when in water tank, water level falls further below liquid level lower limit, central control machine structure timely receives level sensing
The data feedback of device, immediate command vacuum starter cuts off water injection pressure pump electric current, and water injection pressure pump shuts down therewith, and to
Ground monitoring system sends " hydropenia " alarm；
3., when the water level in water tank gradually rises up to liquid level lower limit, liquid level sensor real-time monitoring water level converts, and central authorities control
Mechanism releases " hydropenia " alarm, but do not recover the order that vacuum starter starts water injection pressure pump；
4., when in water tank, water level reaches the liquid level upper limit, central control machine structure recovers vacuum starter and starts water injection pressure pump life
Order, hydraulic pressure feed system recovers normal and runs.
8. a kind of high pressure water injection intelligent control method according to claim 4 is it is characterised in that described water filling coal seam ground should
Power is monitored by the in-situ stress monitoring mechanism in hydraulic pressure feed system, and after the high pressure water injection of coal seam, water filling coal mass relief producing is split
Gap, data signal is sent to central control machine structure by in-situ stress monitoring mechanism；
Be depressed into 10～15MPa when coal seam vertical stress unloads, or coal seam vertical stress reduction rate close to 50% when, central control machine structure
Make a response in time for this signal, order vacuum starter cuts off water injection pressure pump electric current, and coal-bed flooding mode will be by dynamic pressure
Water filling is changed into static pressure water filling, makes water flooding regime meet the demand of water filling coal seam crustal stress change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510247293.8A CN104879168B (en) | 2015-05-15 | 2015-05-15 | A kind of coal seam high pressure water injection intelligent monitor system and its intelligent control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510247293.8A CN104879168B (en) | 2015-05-15 | 2015-05-15 | A kind of coal seam high pressure water injection intelligent monitor system and its intelligent control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104879168A CN104879168A (en) | 2015-09-02 |
| CN104879168B true CN104879168B (en) | 2017-03-01 |
Family
ID=53946819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510247293.8A Active CN104879168B (en) | 2015-05-15 | 2015-05-15 | A kind of coal seam high pressure water injection intelligent monitor system and its intelligent control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104879168B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8457908B2 (en) | 2009-06-11 | 2013-06-04 | University Of Washington | Sensing events affecting liquid flow in a liquid distribution system |
| US10352814B2 (en) | 2015-11-10 | 2019-07-16 | Phyn Llc | Water leak detection using pressure sensing |
| CN105673063B (en) * | 2016-01-06 | 2018-01-16 | 中国矿业大学 | A kind of high inclination-angle thick gassy coal seam impacts diaster prevention and control method |
| CN110273702B (en) * | 2019-05-31 | 2021-03-30 | 山东科技大学 | Coal seam step-by-step water injection accurate control system and water injection method |
| CN112682039B (en) * | 2020-12-29 | 2023-04-28 | 内蒙古黄陶勒盖煤炭有限责任公司 | Coal seam drilling and water injection construction process |
| CN113565455B (en) * | 2021-07-26 | 2023-01-31 | 中煤科工集团沈阳研究院有限公司 | Coal face porous synchronous water injection dust fall accurate control system and water injection method |
| CN114021983A (en) * | 2021-11-05 | 2022-02-08 | 宁夏广天夏电子科技有限公司 | Three-dimensional running monitoring method and system |
| CN114046148B (en) * | 2021-11-10 | 2023-02-21 | 中国矿业大学 | Liquid CO 2 Method for improving coal seam water injection effect by fracturing and permeability increasing |
| CN114109382B (en) * | 2021-11-30 | 2023-02-24 | 中国矿业大学 | Coal bed liquid CO 2 Water intelligent circulating filling, cracking, moistening and dust reducing system |
| CN114151124B (en) * | 2021-11-30 | 2023-03-24 | 中国矿业大学 | Water injection dust reduction method for intelligent liquid carbon-water circulating injection fracturing and moistening coal seam |
| CN114320268B (en) * | 2021-12-20 | 2023-07-28 | 山东唐口煤业有限公司 | Major diameter drilling pressure relief effect evaluation method based on drilling stress monitoring |
| CN114396252B (en) * | 2021-12-31 | 2023-09-22 | 中国矿业大学 | Method for determining reasonable distance between large-diameter holes based on drilling stress monitoring |
| CN114458278B (en) * | 2022-01-19 | 2023-10-27 | 淮北矿业股份有限公司 | Coal seam water injection pressure stabilizing device and use method |
| CN117703325B (en) * | 2024-02-06 | 2024-05-07 | 西安思坦仪器股份有限公司 | Oil field wave code separate injection water injection ground control system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4307978A (en) * | 1978-11-30 | 1981-12-29 | Mitsui Sekitan Kogyo Kabushiki Kaisha | Method of relieving earth pressure in a working area |
| CN202417601U (en) * | 2011-12-27 | 2012-09-05 | 枣庄联创实业有限责任公司 | Mine water-level alarming device |
| CN203035225U (en) * | 2012-12-06 | 2013-07-03 | 内蒙古福城矿业有限公司 | Automatic control coal seam water injecting system |
| CN203669911U (en) * | 2013-12-17 | 2014-06-25 | 神华集团有限责任公司 | Coal seam water injection device and coal seam water injection system |
-
2015
- 2015-05-15 CN CN201510247293.8A patent/CN104879168B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4307978A (en) * | 1978-11-30 | 1981-12-29 | Mitsui Sekitan Kogyo Kabushiki Kaisha | Method of relieving earth pressure in a working area |
| CN202417601U (en) * | 2011-12-27 | 2012-09-05 | 枣庄联创实业有限责任公司 | Mine water-level alarming device |
| CN203035225U (en) * | 2012-12-06 | 2013-07-03 | 内蒙古福城矿业有限公司 | Automatic control coal seam water injecting system |
| CN203669911U (en) * | 2013-12-17 | 2014-06-25 | 神华集团有限责任公司 | Coal seam water injection device and coal seam water injection system |
Non-Patent Citations (2)
| Title |
|---|
| 一种多功能煤层注水监控系统的设计;张强等;《矿业安全与环保》;20110210;第38卷(第1期);第41-44页 * |
| 煤层注水自动控制系统的研究与应用;张延松等;《矿业安全与环保》;20010210;第28卷(第1期);第4-5、21页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104879168A (en) | 2015-09-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104879168B (en) | A kind of coal seam high pressure water injection intelligent monitor system and its intelligent control method | |
| CN104481574B (en) | A kind of method utilizing high energy acoustic-electric complex technique to improve gas permeability of coal seam | |
| CN100535395C (en) | Gridding type layer-through drilling pore group permeability-increasing gas pumping method | |
| CN104373103B (en) | A kind of refracturing tubing string and method can be temporarily blocked up in the old well seam of high flow rate operation | |
| CN110735660A (en) | device for preventing spontaneous combustion of goaf in coal mine and using method thereof | |
| CN111239840B (en) | Floor water inrush early warning method based on high-density electrical method | |
| CN106223877B (en) | The automatic well washing apparatus of coal bed gas well | |
| CN107816365A (en) | A kind of quick-fried pumping integration anti-burst method of coal seam drilling | |
| CN110388206A (en) | A kind of method and apparatus that coal column is left in the residual exploiting field of plasma uplink fracturing | |
| CN215261866U (en) | Intelligent monitoring system for parameters of underground grouting pipeline | |
| CN110374540A (en) | Water control device and control hydraulic art are combined in a kind of protrusion-dispelling blowout prevention of mine detecting water by pilot hole aperture | |
| CN205387929U (en) | High -gas coal mine gas drainage system | |
| CN204591331U (en) | The mine development end dash system of adjoint high-concentration hydrogen sulfide and gas | |
| CN202850930U (en) | Overflow automatic control device for drilling | |
| CN110331948B (en) | Lower seat key MWD downhole multifunctional short joint and use method thereof | |
| CN110344828A (en) | Method plasma L formula abatement thick and hard roof and leave the compound strong mine pressure of coal column | |
| CN105507941B (en) | Underground coal mine working face automates safety system | |
| CN109469457A (en) | Underground electromechanical combination operation device under pressure and application method | |
| CN110344874A (en) | A method of prevention and treatment Period of Coal Seam Spontaneous Combustion | |
| CN213392239U (en) | Mine intelligence water smoke dust collector | |
| CN205477753U (en) | Mine geomantic omen pipe network safety monitoring and long -range dispatch system | |
| CN110273684A (en) | Method plasma U formula abatement thick and hard roof and leave the compound strong mine pressure of coal column | |
| CN107130989A (en) | Hydraulic support of top-coal saving face puts coal method | |
| CN106223936A (en) | The wireless monitor of oil well delamination section manufacturing parameter and regulation and control method | |
| CN110388208A (en) | Plasma abatement thick and hard roof and the method for leaving the compound strong mine pressure of coal column |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |