CN114167774A - Coal mine underground reservoir sedimentation monitoring system - Google Patents
Coal mine underground reservoir sedimentation monitoring system Download PDFInfo
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- CN114167774A CN114167774A CN202111445479.6A CN202111445479A CN114167774A CN 114167774 A CN114167774 A CN 114167774A CN 202111445479 A CN202111445479 A CN 202111445479A CN 114167774 A CN114167774 A CN 114167774A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 213
- 239000003245 coal Substances 0.000 title claims abstract description 49
- 238000004062 sedimentation Methods 0.000 title abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- 238000012806 monitoring device Methods 0.000 claims abstract description 44
- 238000002347 injection Methods 0.000 claims abstract description 26
- 239000007924 injection Substances 0.000 claims abstract description 26
- 238000005065 mining Methods 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 11
- 239000003673 groundwater Substances 0.000 claims abstract description 10
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 8
- 239000000725 suspension Substances 0.000 claims description 35
- 238000003466 welding Methods 0.000 claims description 3
- 239000000443 aerosol Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 7
- 239000011435 rock Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24024—Safety, surveillance
Abstract
The invention discloses a coal mine underground reservoir sedimentation monitoring system, and belongs to the field of underground reservoir sedimentation monitoring. The method comprises the following steps: the first end of the at least one group of water injection pipes is positioned on the side of the fully mechanized mining face, the second end of the at least one group of water injection pipes is positioned on the upstream side of the underground reservoir in the mine water flow direction, and the water injection pipes are used for injecting the high-suspended matter mine water collected on the working face into the underground reservoir; at least a set of desilting monitoring pipe, its first end is located and synthesizes and adopts the working face side, and the second end is located in the groundwater reservoir and be located the downstream side of water injection pipe, the desilting monitoring pipe is located set up a plurality of through-holes on the pipe wall in the groundwater reservoir, suspended solid in the groundwater reservoir subsides and follows the through-hole gets into in the desilting monitoring pipe, set up a plurality of monitoring devices of group, a plurality of groups in the desilting monitoring pipe monitoring device passes through supporting component and arranges according to setting for the interval in the desilting monitoring pipe. The invention reasonably arranges the monitoring device based on the characteristics of the coal mine underground reservoir, and is particularly suitable for the coal mine underground reservoir.
Description
Technical Field
The invention relates to the field of monitoring of an underground reservoir, in particular to a sedimentation monitoring system of a coal mine underground reservoir.
Background
In the operation process of the coal mine underground reservoir, the mine water moves in rock cracks and pores in the underground reservoir, and suspended matters contained in the mine water are removed under the action of free sedimentation and rock mass resistance, so that the coal mine underground reservoir can remove the mine water suspended matters, and further purify the mine water. However, in the long-term purification process of the rock mass in the coal mine underground reservoir, due to the accumulation of suspended matters, rock mass cracks and pore siltation can be caused, so that the storage capacity of the water storage space of the underground reservoir and the water quality purification effect are influenced, the permeability of the water storage rock mass can be changed, and further the allocation and use of water resources in the underground reservoir are influenced.
At present, a real-time and accurate intelligent sedimentation monitoring technology does not exist in a coal mine underground reservoir, and the conventional sedimentation monitoring method is utilized, so that the method is not applicable to the coal mine underground reservoir and mainly comprises the following points:
(1) the coal mine underground reservoir is constructed by relying on a mined-out area after coal mining, is a closed underground space, is filled with caving rock masses inside, and is sealed by a coal pillar dam body and an artificial dam body around the coal pillar dam body, and the characteristics cause that the conventional reservoir sedimentation monitoring method is not suitable for the coal mine underground reservoir.
(2) The underground reservoir is filled with caving rock masses, and if the underground reservoir monitoring point is monitored by using the underground water flow monitoring method, mine water can be subjected to resistance of the rock masses when flowing out, so that the change of flow and flow speed cannot be judged to be caused by siltation or influence of rock mass resistance, and the reliability of the result is lower.
(3) The monitoring points of the existing underground reservoir sedimentation monitoring means are intensively arranged at the underground water downstream or the position of a water pumping hole of an underground reservoir, so that the monitoring range is limited, and the aim of monitoring the sedimentation of the underground reservoir in the full range is difficult to achieve.
(4) The existing underground reservoir sedimentation monitoring means can predict whether sedimentation occurs or not through measuring and calculating data after field manual actual operation is needed, and the method is long in time consumption and complex in operation.
(5) The existing underground reservoir sedimentation monitoring means can only collect data by field operation one by one at a monitoring point, is low in efficiency and cannot realize real-time, continuous and efficient intelligent monitoring effect.
(6) The existing underground reservoir sedimentation monitoring means can only manually calculate and collect data, and cannot realize the functions of automatically recording the monitoring data and forming a database.
(7) The existing underground reservoir sedimentation monitoring means can only carry out dredging treatment after manually distinguishing sedimentation, and cannot automatically initiate an instruction to carry out dredging according to monitoring data through a monitoring platform.
Therefore, there is a need to provide a new intelligent monitoring system for coal mine underground reservoir sedimentation.
Disclosure of Invention
Therefore, the invention provides a monitoring system for underground reservoir sedimentation suitable for coal mines.
In order to solve the technical problems, the invention provides the following technical scheme:
a coal mine underground reservoir siltation monitoring system, comprising: the first end of the at least one group of water injection pipes is positioned on the side of the fully mechanized mining face, the second end of the at least one group of water injection pipes is positioned on the upstream side of the underground reservoir in the mine water flow direction, and the water injection pipes are used for injecting the high-suspended matter mine water collected on the working face into the underground reservoir; at least a set of desilting monitoring pipe, its first end is located and synthesizes and adopts the working face side, and the second end is located in the groundwater reservoir and be located the downstream side of water injection pipe, the desilting monitoring pipe is located set up a plurality of through-holes on the pipe wall in the groundwater reservoir, suspended solid in the groundwater reservoir subsides and follows the through-hole gets into in the desilting monitoring pipe, set up a plurality of monitoring devices of group, a plurality of groups in the desilting monitoring pipe monitoring device passes through supporting component and arranges according to setting for the interval in the desilting monitoring pipe. By arranging the dredging monitoring pipe in the underground reservoir and arranging the monitoring device in the dredging monitoring pipe, the sedimentation conditions in different area ranges of the coal mine underground reservoir can be continuously monitored in real time, so that the time is saved, the data is accurate, and the sedimentation monitoring system can be used for calculating and researching the sedimentation rate and the storage capacity. Monitoring devices pass through the supporting component and arrange according to setting for the interval in the desilting monitoring pipe, can realize that the different siltation condition monitoring in setting for the interval in the desilting monitoring pipe, and then further judge out the siltation condition of whole underground reservoir according to the siltation condition regularity of its position, provide the judgement basis for whether should take the desilting measure.
In some embodiments of the invention, the monitoring device comprises an aerosol concentration sensor, and the support assembly comprises: the suspension is used for supporting the suspended matter concentration sensor, and the connecting rod is used for connecting a plurality of groups of the suspensions, wherein the suspensions are installed on the dredging monitoring pipe through a guide assembly, and the suspensions are connected to the connecting rod at equal intervals. The connecting rod can drive the suspension and the suspended solid concentration sensor to slide relative to the dredging monitoring pipe, and after the system monitors the set time, the suspended solid concentration sensor can be pulled out to the outer side of the dredging monitoring pipe through the pulling connecting rod, so that the sensor is periodically calibrated, maintained or replaced, and the measuring error of the sensor is reduced as much as possible. In addition, the plurality of suspensions are connected to the connecting rod at equal intervals, so that the monitoring devices are arranged at equal intervals relative to the dredging monitoring pipe.
In some embodiments of the present invention, the guiding assembly includes a sliding rail fixed on the dredging monitoring pipe, and a plurality of sets of sliding components slidably connected to the sliding rail, and each set of sliding components is correspondingly connected to each set of suspension.
In some embodiments of the present invention, two sliding guide rails are disposed on the upper portion of the pipe wall of the dredging monitoring pipe, the sliding guide rails are symmetrically disposed on two sides of the vertical central plane of the dredging monitoring pipe, each set of sliding components are respectively slidably connected to the two sliding guide rails, the suspension is connected between the two sliding components, and the suspended matter concentration sensor is connected to the middle portion of the suspension.
In some embodiments of the present invention, the dredging monitoring pipe is formed by welding a plurality of sections of monitoring branch pipes, wherein two sides of the sliding guide rail on each section of monitoring branch pipe are respectively provided with a limiting groove.
In some embodiments of the invention, the connecting rod is formed by detachably connecting a plurality of sections of supporting rods, connecting hooks are arranged at two ends of each supporting rod, and adjacent supporting rods are connected through the connecting hooks.
In some embodiments of the invention, the end of the dredging monitoring pipe on the fully mechanized coal mining face side is connected with a sensor cable conduit and a dredging conduit through a tee joint, the sensor cable conduit is used for connecting a signal wire of the suspended matter concentration sensor to a monitoring platform, and the dredging conduit is communicated with a trench. The data transmission that suspended solid concentration sensor gathered to monitoring platform, monitoring platform automatic recording monitoring data to form the monitoring database, the researcher of being convenient for carries out remote monitoring, and the workman need not to go into the well, need not complicated field operation, and the siltation monitoring of specially adapted colliery underground reservoir, easy operation, conclusion are reliable. After the deposition amount in the dredging monitoring pipe reaches a set threshold value, the deposition in the dredging monitoring pipe is controlled to be discharged into the trench along the dredging pipeline, and the effect of automatic dredging is achieved.
In some embodiments of the invention, a plurality of groups of the dredging monitoring pipes are arranged at intervals along the water flow direction of the mine, and each group of the dredging monitoring pipes comprises at least one dredging monitoring pipe.
In some embodiments of the invention, the height H of the centerline of the dredging monitoring pipe is1The relation with the height H of the underground reservoir is 1/5H-H11/2H or less, and the dredging monitoring pipe is positioned in the underground reservoir and has an extension length L1Is equal to the width W of the underground water reservoir. By arranging the dredging monitoring pipe in this way, the purpose of monitoring the sedimentation of the underground reservoir in a full range is realized.
In some embodiments of the invention, the water injection pipe extends a length L within the groundwater reservoir2The relation with the width W of the underground reservoir is 1/4W-L23/4W or less, the relation between the distance m between the central line of the water injection pipe and the upstream boundary surface of the underground water reservoir and the length L of the underground water reservoir is 0<m≤1/4L。
Compared with the prior art, the technical scheme of the invention has the following technical effects:
in the sedimentation monitoring system for the coal mine underground reservoir, the dredging monitoring pipe is introduced into the downstream of the water injection pipe in the underground reservoir, and a plurality of groups of monitoring devices for monitoring the sedimentation condition in the water reservoir are arranged in the dredging monitoring pipe, so that the sedimentation condition in different area ranges of the coal mine underground reservoir can be continuously monitored in real time, the time is saved, the data is accurate, and the sedimentation rate and the reservoir capacity can be calculated and researched. Simultaneously, monitoring devices pass through the supporting component and arrange according to setting for the interval in the desilting monitoring pipe, can realize setting for the interior siltation condition monitoring of interval, and then further judge out whole underground reservoir's siltation condition according to the siltation condition regularity of its position, provide the judgement basis for whether should take the desilting measure.
Drawings
The objects and advantages of the present invention will be understood by the following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic plan view of an embodiment of a coal mine underground reservoir siltation monitoring system of the present invention;
FIG. 2 is a side cross-sectional view of one embodiment of a coal mine underground reservoir siltation monitoring system of the present invention;
FIG. 3 is a connection relationship diagram of a dredging monitoring pipe, a dredging pipe and a sensor cable pipeline in the sedimentation monitoring system of the coal mine underground reservoir;
fig. 4 is a schematic view of an installation structure of a monitoring device in an embodiment of the coal mine underground reservoir sedimentation monitoring system of the invention;
fig. 5 is a schematic structural diagram of a monitoring branch pipe in an embodiment of the coal mine underground reservoir sedimentation monitoring system of the invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Fig. 1 and 2 show a specific embodiment of a coal mine underground reservoir sedimentation monitoring system (hereinafter referred to as a sedimentation monitoring system) provided by the present invention, which includes at least one group of water injection pipes 3 for injecting highly suspended matter mine water collected by a fully mechanized mining face into an underground reservoir 2 and at least one group of dredging monitoring pipes 4 for monitoring sedimentation conditions in the reservoir; wherein, the first end of water injection pipe 3 is located the full-mechanized coal mining face side, and the second end is located the upper reaches side of the mine rivers direction of underground reservoir 2, and the first end of desilting monitoring pipe 4 is located the full-mechanized coal mining face side, and the second end is located 2 interior and lie in of underground reservoir 3's downstream side, desilting monitoring pipe 4 is located set up a plurality of through-holes on the pipe wall in underground reservoir 2, the suspended solid in underground reservoir 2 subsides and follows the through-hole gets into in the desilting monitoring pipe 4, desilting monitoring pipe 4 sets up a plurality of monitoring devices 5, a plurality of groups along its extending direction monitoring devices 5 arrange according to setting for the interval in desilting monitoring pipe 4 through the supporting component.
When the sedimentation monitoring system is adopted to monitor the coal mine underground reservoir 2, detailed investigation is firstly carried out on the overlying strata 1 and the coal mine underground reservoir 2, wherein the detailed investigation comprises hydrogeological data, excavation engineering plane data, coal face contour lines and ponding range data, goaf rock mass properties, overlying strata collapse forms, coal mine underground reservoir 2 trend, inclination angles and the like. According to the detailed survey data and data, the gradient i of the coal mine underground reservoir 2, the mine water flowing direction in the reservoir and the region easy to deposit can be determined. Assuming that the length of the underground reservoir 2 is L, the width of the underground reservoir is W and the height of the underground reservoir is H, a dredging monitoring pipe 4 is introduced into the downstream of a water injection pipe 3 in the underground reservoir 2, and a plurality of groups of monitoring devices 5 for monitoring the sedimentation condition in the underground reservoir are arranged in the dredging monitoring pipe 4, so that the sedimentation condition in different area ranges of the underground reservoir 2 of the coal mine can be continuously monitored in real time, the time is saved, the data is accurate, and the underground reservoir can be used for calculating and researching the sedimentation rate and the reservoir capacity. Simultaneously monitoring devices 5 through the supporting component according to setting for the interval arrange in desilting monitoring pipe 4 can realize that the different siltation condition monitoring of setting for the interval in desilting monitoring pipe 4, and then further judge out the siltation condition of whole underground reservoir 2 according to the siltation condition regularity of its position, provide the judgement basis for whether should take the desilting measure.
Specifically, the end part of the dredging monitoring pipe 4 on the fully mechanized coal mining face side is connected with a sensor cable pipeline 17 and the dredging pipeline 11 through a tee joint 14, the sensor cable pipeline 17 is used for connecting a signal wire of the monitoring device 5 to a monitoring platform 19, and monitoring data are stored in the monitoring platform 19 to form a database. More specifically, the signal line of the monitoring device 5 is connected to the monitoring platform 19 after passing through the transmitter 18, so that remote monitoring is realized, workers do not need to go down the well, complex field operation is not needed, the sedimentation monitoring device is particularly suitable for sedimentation monitoring of the coal mine underground reservoir 2, and the sedimentation monitoring device is simple to operate and reliable in conclusion. The desilting pipeline 11 is located the downside of tee bend 14 and communicate with trench 16, set up electromagnetism stop valve 15 in the desilting pipeline 11, after the siltation volume in desilting monitoring pipe 4 reached the settlement threshold value, will electromagnetism stop valve 15 is opened, the sediment in the desilting monitoring pipe 4 is arranged to trench 16 along desilting pipeline 11.
Specifically, the dredging monitoring pipe 4 extends a length L within the underground water reservoir 21The width W of the underground reservoir 2 is equal, so that the position of the monitoring device 5 in the dredging monitoring pipe 4 can be adjusted according to different monitoring requirements, and the sedimentation monitoring of the whole underground reservoir 2 in the width direction can be realized. The diameter of the dredging monitoring pipe 4 is larger than 200mm, the diameter of a through hole on the pipe wall is 3-10mm, preferably 5mm, so that suspended matters in mine water can enter the dredging monitoring pipe 4 after sedimentation, and the monitoring device 5 in the pipe can accurately perform sedimentation monitoring.
A plurality of groups of the dredging monitoring pipes 4 are arranged at intervals along the mine water flow direction, the plurality of groups of the dredging monitoring pipes 4 extend along the direction perpendicular to the mine water flow direction and are arranged in parallel, for example, as shown in fig. 1 and 2, in one specific embodiment, 4 groups of the dredging monitoring pipes 4 are arranged at intervals along the mine water flow direction, and the first group of the dredging monitoring pipes, the second group of the dredging monitoring pipes, the third group of the dredging monitoring pipes and the fourth group of the dredging monitoring pipes are arranged along the upstream to the downstream in sequence; the distance between the first group of monitoring pipes and the water injection pipe 3 is n, the distance between the second group of monitoring pipes and the first group of monitoring pipes is n, the distance between the third group of monitoring pipes and the second group of monitoring pipes is 2n, and the distance between the fourth group of monitoring pipes and the third group of monitoring pipes is 4n, namely, the distances between the adjacent dredging monitoring pipes 4 are sequentially increased from upstream to downstream. According to the settlement characteristic of suspended solid, the siltation of 2 underground reservoirs is mainly concentrated in 3 position low reaches certain regional scopes of water injection pipe, 4 horizontal intervals of every group desilting monitoring pipe that set up in this region should not be too big, consequently the second group monitoring pipe setting is in the downstream position that is close to first group monitoring pipe, quantity is the same with first group, two sets of pipe central lines are parallel and horizontal interval also is n, and the height of pipe central line apart from the reservoir bottom plate keeps unanimous with first group monitoring pipe, the second group monitoring pipe also is vertical direction equidistance and distributes. Thus, the slopes of the planes formed by the central lines of the two pipes with the same height from the underground reservoir 2 in the first group and the second group of monitoring pipes are the slopes i of the underground reservoir 2.
Further, similarly, the relative positions of the third group of monitoring tubes to the second group are set with reference to the positions of the second group and the first group, except that the tube center lines of the two groups are horizontally spaced by 2 n.
Further, by analogy, the relative positions of the monitoring tubes in the K-th group and the monitoring tubes in the K-1 th group are set by referring to the positions of the monitoring tubes in the K-1 th group and the monitoring tubes in the K-2 th group, and the difference is that the horizontal distance between the center lines of the monitoring tubes in the two groups is 2 times that of the center lines of the monitoring tubes in the two groups. Until the calculated tube centerline of the X-th group of monitoring tubes occurs outside the reservoir downstream boundary, the group will not be set.
In particular, each group of dredging monitoring pipes 4 comprises at least one of said dredging monitoring pipes 4, and in one embodiment, as shown with reference to fig. 2, each group of dredging monitoring pipes 4 comprises two of said dredging monitoring pipes 4. Height H of central line of dredging monitoring pipe 41A relation with the height H of the underground reservoir 2 is 1/5H ≦ H11/2H or less, that is, the height of the highest dredging monitoring pipe 4 is not more than half of the height H of the underground reservoir 2. According to the characteristics of the underground water reservoir 2, if silting1/2, which exceeds the height of the underground water reservoir 2, will greatly affect the storage capacity and use of the underground water reservoir 2, so that the desilting monitoring pipe 4 is not required to be arranged in the height range of 1/2H at the upper part of the underground water reservoir 2 under normal conditions. In addition, the height distance of the central line of each group of adjacent dredging monitoring pipes 4 is preferably between 500 mm and 2000mm, and the pipes are distributed at equal intervals in the vertical direction, so that the dredging condition is analyzed in the height direction.
Specifically, the position and arrangement of the water injection pipe 3 are not unique; in one embodiment, as shown in fig. 1 and 2, the sedimentation monitoring system is provided with a water injection pipe 3, and the water injection pipe 3 is located in the underground water reservoir 2 and extends for a length L2A relation with the width W of the underground reservoir 2 is 1/4W ≦ L23/4W or more, the distance m between the center line of the water injection pipe 3 and the upstream boundary surface of the underground water reservoir 2 and the length L of the underground water reservoir 2 are in a relation of 0<m≤1/4L。
Specifically, a plurality of groups of monitoring devices 5 are arranged at a set distance along the extending direction of the dredging monitoring pipe 4, for example, referring to fig. 1, 3 groups of monitoring devices 5 are provided, the distance between adjacent monitoring devices 5 is preferably between 5m and 100m, and preferably, the distance between adjacent monitoring devices 5 is equal.
The monitoring device 5 comprises a suspended matter concentration sensor 10 for detecting the suspended matter concentration in the dredging monitoring pipe 4, the supporting component comprises a suspension 8 for supporting the suspended matter concentration sensor 10, wherein the suspension 8 is installed on the dredging monitoring pipe 4 through a guiding component. More specifically, suspended solid concentration sensor 10 includes sensor body 10a and attach fitting 10b, attach fitting 10b fixed connection in on the suspension 8, realize this suspended solid concentration sensor 10 hang and be fixed in the lumen of desilting monitoring pipe 4, sensor body 10a extends to the clearance a that is less than the radius R of desilting monitoring pipe 4 with the bottom of the pipe of desilting monitoring pipe 4 to realize the suspended solid concentration detection in desilting monitoring pipe 4.
Since the suspended matter concentration sensor 10 needs to be calibrated or maintained after a period of time, the support assembly further comprises a connecting rod 9 connected with a plurality of groups of suspensions 8, and a plurality of suspensions 8 are connected on the connecting rod 9 at equal intervals. The suspension 8 and the suspended matter concentration sensor 10 mounted on the suspension 8 can be pulled out to the outside of the dredging monitoring pipe 4 by pulling the connecting rod 9, so that the calibration, the maintenance and the replacement can be realized. By connecting a number of said suspensions 8 to said connecting rods 9 at equal intervals, an equidistant arrangement of the monitoring devices 5 with respect to the dredging monitoring pipe 4 is achieved.
Specifically, in one embodiment, as shown in fig. 4, the guiding assembly includes a sliding guide rail 6 fixed on the dredging monitoring pipe 4, and a plurality of sets of sliding members 7 slidably connected to the sliding guide rail 6, wherein each set of sliding members 7 is connected to each set of suspension 8. More specifically, the sliding guide rail 6 penetrates through the wall of the whole dredging monitoring pipe 4, and the number of the sliding components 7 corresponds to the number of the groups of the monitoring devices 5, namely, one sliding component 7 is connected with a group of suspensions 8 of the monitoring devices 5.
More specifically, the pipe wall upper portion of desilting monitoring pipe 4 sets up two sliding guide 6, two sliding guide 6 set up symmetrically in desilting monitoring pipe 4 vertical central plane both sides, sliding guide 6 shaping is for having steel ball guide rail structure, sliding part 7 shaping is the sliding part 7 that both sides were covered with the steel ball about for, two sliding part 7 is interior detained respectively in two sliding guide 6's inside, suspension 8 connect in two between the sliding part 7, suspension concentration sensor 10 connect in the middle part of suspension 8 to guarantee that suspension concentration sensor 10 is located desilting monitoring pipe 4's vertical central line. The suspension 8 can be more easily slid into and out of the desilting monitoring pipe 4 by providing the above-described guide assembly.
Specifically, the manner of mounting the monitoring device 5 by the link 9 and the manner of securing the position thereof are not unique; in one embodiment, the connecting rod 9 is the same length as the dredging monitoring pipe 4, and extends to the side wall of the underground reservoir 2 as the dredging monitoring pipe 4; when 3 sets of the monitoring devices 5 are installed in the dredging monitoring pipe 4, the suspensions 8 are fixedly connected to the set positions of the connecting rods 9, for example, the positions 100m, 200m and 300m away from the end parts of the connecting rods 9, the monitoring devices 5 are arranged at equal intervals, the sliding parts 7 respectively connected with the three sets of the suspensions 8 are installed on the sliding guide rails 6, the connecting rods 9 are pushed to move towards the inside of the dredging monitoring pipe 4 until the end parts of the connecting rods 9 abut against the side wall of the underground reservoir 2, and the positions of the connecting rods 9 and the dredging monitoring pipe 4 are determined due to the determination of the positions of the monitoring devices 5 relative to the connecting rods 9, so that the positions of the monitoring devices 5 relative to the dredging monitoring pipe 4 can be determined. In another specific embodiment, the length of the connecting rod 9 is smaller than that of the dredging monitoring pipe 4, the plurality of groups of suspensions 8 are fixedly connected to the set positions of the connecting rod 9, the position of the connecting rod 9 is determined according to the relative position of the end part of the connecting rod 9 and the end part of the dredging monitoring pipe 4 on the fully mechanized mining face side, and finally the installation position of the monitoring device 5 relative to the dredging monitoring pipe 4 is determined.
Specifically, as shown in fig. 5, the connecting rod 9 is formed by detachably connecting a plurality of sections of supporting rods 9a, for example, by connecting a plurality of sections of supporting rods 9a with a length of 1-2m, two ends of the supporting rods 9a are provided with connecting hooks, and adjacent supporting rods 9a are connected by the connecting hooks.
Specifically, because the width of the underground reservoir 2 is large, generally greater than 1km, as shown in fig. 5, the dredging monitoring pipe 4 is formed by welding a plurality of sections of monitoring branch pipes 4a, for example, the length of the monitoring branch pipe 4a is 1m, the sliding guide rail 6 is welded in each section of monitoring branch pipe 4a, and the sliding guide rails 6 of the plurality of sections of monitoring branch pipes 4a are mutually abutted, wherein, limit clamping grooves (not shown in the figure) are respectively arranged on two sides of the sliding guide rail 6 of each section of monitoring branch pipe 4a, the limit clamping grooves are used for limiting the sliding part 7 located at the section of the sliding guide rail 6 to continuously slide under the influence of water flow, and the sliding part 7 can be limited on the corresponding section of the sliding guide rail 6 under no external force action by the limit clamping grooves, so that the position of the monitoring device 5 is relatively accurate. More specifically, the length L of each set of slide members 7hIs the length L of each sliding guide rail 6d1/3-1/2, the sliding distance of the sliding member 7 relative to the sliding guide 6 can be made short without external force, and the moving range of the monitoring device 5 fixed on the sliding member 7 can be prevented from being too large.
Specifically, the end part of the dredging monitoring pipe 4, which is positioned on the fully mechanized mining face, is provided with a movable joint 13 connected with a tee joint 14, and when the monitoring device 5 is overhauled, after the movable joint 13 and the tee joint 14 are disassembled, the monitoring device 5 fixed on the suspension 8 is pulled out of the underground reservoir 2 in sequence by pulling the connecting rod 9, so that maintenance and replacement are carried out.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.
Claims (10)
1. A coal mine underground reservoir siltation monitoring system, comprising:
the first end of the at least one group of water injection pipes is positioned on the side of the fully mechanized mining face, the second end of the at least one group of water injection pipes is positioned on the upstream side of the underground reservoir in the mine water flow direction, and the water injection pipes are used for injecting the high-suspended matter mine water collected on the working face into the underground reservoir;
at least a set of desilting monitoring pipe, its first end is located and synthesizes and adopts the working face side, and the second end is located in the groundwater reservoir and be located the downstream side of water injection pipe, the desilting monitoring pipe is located set up a plurality of through-holes on the pipe wall in the groundwater reservoir, suspended solid in the groundwater reservoir subsides and follows the through-hole gets into in the desilting monitoring pipe, set up a plurality of monitoring devices of group, a plurality of groups in the desilting monitoring pipe monitoring device passes through supporting component and arranges according to setting for the interval in the desilting monitoring pipe.
2. The coal mine underground reservoir siltation monitoring system of claim 1, wherein the monitoring device includes an aerosol concentration sensor, the support assembly comprising: the suspension is used for supporting the suspended matter concentration sensor, and the connecting rod is used for connecting a plurality of groups of the suspensions, wherein the suspensions are installed on the dredging monitoring pipe through a guide assembly, and the suspensions are connected to the connecting rod at equal intervals.
3. The coal mine underground reservoir siltation monitoring system according to claim 2, wherein the guiding assembly includes a sliding rail fixed to the siltation monitoring pipe, and a plurality of sets of sliding members slidably connected to the sliding rail, each set of sliding members being connected to each set of suspensions.
4. The coal mine underground reservoir siltation monitoring system according to claim 3, wherein two sliding rails are arranged on the upper portion of the pipe wall of the desilting monitoring pipe, the sliding rails are symmetrically arranged on two sides of the vertical center plane of the desilting monitoring pipe, each group of sliding parts are respectively connected to the two sliding rails in a sliding manner, the suspension is connected between the two sliding parts, and the suspended matter concentration sensor is connected to the middle portion of the suspension.
5. The coal mine underground reservoir siltation monitoring system according to claim 3 or 4, wherein the siltation monitoring pipe is formed by welding a plurality of sections of monitoring branch pipes, and limiting grooves are respectively arranged on two sides of a sliding guide rail on each section of monitoring branch pipe.
6. The coal mine underground reservoir siltation monitoring system according to claim 2, wherein the connecting rod is formed by detachably connecting a plurality of sections of supporting rods, connecting hooks are arranged at two ends of each supporting rod, and adjacent supporting rods are connected through the connecting hooks.
7. The coal mine underground reservoir siltation monitoring system according to claim 1, wherein an end portion of the desilting monitoring pipe on a fully mechanized mining face side is connected with a sensor cable conduit and a desilting conduit through a tee joint, the sensor cable conduit is used for connecting a signal line of the monitoring device to a monitoring platform, and the desilting conduit is communicated with a trench.
8. The coal mine underground reservoir siltation monitoring system according to claim 1, wherein a plurality of sets of said desilting monitoring pipes are provided at intervals along a mine water flow direction, each set of said desilting monitoring pipes including at least one of said desilting monitoring pipes.
9. The coal mine underground reservoir siltation monitoring system according to claim 1, wherein a height H at which a center line of the desilting monitoring pipe is located1The relation with the height H of the underground reservoir is 1/5H-H11/2H or less, and the dredging monitoring pipe is positioned in the underground reservoir and has an extension length L1Is equal to the width W of the underground water reservoir.
10. The coal mine underground reservoir siltation monitoring system of claim 1, wherein the water injection pipe extends a length L within the underground reservoir2The relation with the width W of the underground reservoir is 1/4W-L23/4W or less, the relation between the distance m between the central line of the water injection pipe and the upstream boundary surface of the underground water reservoir and the length L of the underground water reservoir is 0<m≤1/4L。
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