CN111044007B - On-line monitoring system and monitoring method for transverse deformation of filling body - Google Patents
On-line monitoring system and monitoring method for transverse deformation of filling body Download PDFInfo
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- CN111044007B CN111044007B CN201911426294.3A CN201911426294A CN111044007B CN 111044007 B CN111044007 B CN 111044007B CN 201911426294 A CN201911426294 A CN 201911426294A CN 111044007 B CN111044007 B CN 111044007B
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- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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Abstract
The invention discloses an on-line monitoring system and a monitoring method for transverse deformation of a filling body, and belongs to the technical field of mine filling body monitoring. The device comprises a bidirectional displacement measuring device, a data transmission line, a fixed disc, a communication substation, a communication master station, a telephone line, a ground data acquisition instrument and a computer system, wherein the bidirectional displacement measuring device is embedded in a filling body and is used for measuring the left side and the right side of the filling body and the total transverse deformation; the bidirectional displacement measuring device comprises a measuring main body, an extension line, a steel pipe and two stay cord displacement sensors fixed in the measuring main body, wherein the measuring main body comprises a shell and an upper cover matched with the shell, the steel pipe is connected in the horizontal direction of the measuring main body, the adjacent steel pipes are connected end to end with each other through threads, part of stay cords of the stay cord displacement sensors are positioned in the steel pipe, and a connecting ring and the extension line are further arranged in the steel pipe. The invention can realize real-time and on-line remote monitoring of the left and right sides and the total transverse deformation of the filling body.
Description
Technical Field
The invention relates to the technical field of mine filling body monitoring, in particular to a filling body transverse deformation online monitoring system and a monitoring method.
Background
The filling mining means that the goaf is filled with filling materials after underground coal resources are mined, the filling body effectively supports the overlying strata, the surface movement deformation value is controlled within the allowable deformation range of the building (structure), the safe recovery of the coal and carbon resources under the building (structure) is realized, and the ecological environment and the underground water resources of the mining area are protected at the same time. The filling mining is an important technical means for mining 'three lower' pressed coal in China, and the filling mining technology is more and more widely applied in China along with the continuous improvement of the environmental protection requirement of China in recent years.
After the filling exploitation, the filling body will be used as a bearing structure to support the overburden, and the actual working state of the filling body in the well will directly determine the magnitude of the surface movement deformation value, so that it is necessary to monitor the actual working state of the filling body in the well in real time. CN202467929U and CN103528731A disclose an on-line monitoring system for the performance of a filler and an on-line monitoring system for the filling of coal mine paste based on fiber bragg grating sensing, which monitor only the vertical deformation and stress of the filler, but cannot monitor the lateral deformation of the filler.
The transverse deformation of the filling body is an important index for evaluating the long-term stability of the filling body, so that the development of a transverse deformation monitoring system of the filling body is necessary, and the transverse deformation monitoring system has important significance for evaluating the underground actual working state and stability of the filling body.
Disclosure of Invention
The invention aims to provide an on-line monitoring system and a monitoring method for transverse deformation of a filling body, which can realize real-time on-line remote monitoring of the left side and the right side of the filling body and total transverse deformation.
One of the tasks of the invention is to provide an on-line monitoring system for the transverse deformation of a filling body, which adopts the following technical scheme:
an on-line monitoring system for the transverse deformation of a filling body comprises a bidirectional displacement measuring device, a data transmission line, a communication substation, a communication main station, a telephone line, a ground data acquisition instrument and a computer system, wherein the bidirectional displacement measuring device is sequentially connected with the communication substation and the communication main station through the data transmission line;
the bidirectional displacement measuring device is embedded in the filling body and is used for measuring the left side and the right side of the filling body and the total transverse deformation;
the bidirectional displacement measuring device comprises a measuring main body, a steel pipe, an extension line and two pull rope displacement sensors fixed in the measuring main body, wherein the measuring main body comprises a shell and an upper cover matched with the shell, the shell is of a hollow cuboid structure, pull rope outlets are respectively arranged on the left side and the right side of the shell, pull ropes of the two pull rope displacement sensors are respectively led out through the pull rope outlets on the left side and the right side, pull rope leading-out ends of the pull rope displacement sensors face the pull rope outlets on the left side and the right side of the shell, and pull rope axes of the two pull rope displacement sensors are overlapped with the corresponding pull rope outlet axes; two wire outlet holes are formed in the rear side of the shell, and connecting wires of the two stay cord displacement sensors are led out from the corresponding wire outlet holes respectively;
sealing plugs II for preventing the initial filling slurry from entering the shell are arranged between the connecting lines of the two stay cord displacement sensors and the corresponding wire outlet holes;
the parts of the stay rope outlets on the left side and the right side, which are positioned outside the shell, are provided with external threads, the steel pipe is provided with a plurality of sections, the steel pipe adjacent to the shell is just rotationally connected to the external threads, the other steel pipes are sequentially connected through threads, part of stay ropes of the stay rope displacement sensor are positioned in the steel pipe, an extension line and a connecting ring are also arranged in the steel pipe, the extension line is fixedly connected with the stay ropes of the stay rope displacement sensor through the connecting ring, and the connected extension line, the stay ropes of the stay rope displacement sensor and the connecting ring transversely penetrate through the inside of the steel pipe;
the fixing disc comprises a blocking disc, a first sealing plug and a fastening ring, the blocking disc is a disc/cross disc with a through hole in the middle, the blocking disc is fixedly connected with the first sealing plug, and the extension line penetrates through the first sealing plug and the through hole and then is connected with the blocking disc through the fastening ring.
In a preferred embodiment of the present invention, a seal ring is disposed at an upper opening of the housing to be tightly connected to the upper cover, the rope displacement sensor is fixed in the housing by a screw, and the housing and the upper cover are connected by a bolt.
Further, the outer surface of the extension line is coated with lubricating oil for reducing resistance during the movement of the extension line.
Furthermore, the number of the bidirectional displacement measuring devices is determined according to the measuring purpose, and the number of the bidirectional displacement measuring devices is more than or equal to 1; the length of the extension line and the number of steel pipes are also determined according to the purpose of measurement.
Furthermore, the extension line is a rigid member, the communication substations can be arranged in a plurality of numbers, and each communication substation is responsible for one filling working surface or one measuring area.
The installed extension line is in a pre-tightening state so as to ensure that the stay cord displacement sensor can be pulled to generate deformation immediately after the filling body drives the baffle to move.
Furthermore, the bidirectional displacement measuring device, the fixed disc, the data transmission line, the communication substation, the communication master station and the telephone line are located underground, and the ground data acquisition instrument and the computer system are located above the well.
Another task of the present invention is to provide a method for monitoring lateral deformation of a filling body, which sequentially comprises the following steps:
s1, intercepting extension lines with proper lengths according to specific measurement purposes, selecting a certain number of steel pipes, connecting the shell with the steel pipes, the extension lines and the fixed disc, and installing the connected bidirectional displacement measurement device at a proper position;
s2, connecting a connecting wire of the bidirectional displacement measuring device with the data transmission wire through a junction box, connecting the data transmission wire with the communication substation, connecting the communication substation with a communication master station, connecting the communication substation with a downhole telephone wire, connecting the downhole telephone wire with a ground data acquisition instrument, and connecting the ground data acquisition instrument with a computer system;
s3, encoding the bidirectional displacement measuring device through an encoder, and zeroing the bidirectional displacement measuring device;
and S4, filling the goaf, and carrying out real-time online remote monitoring on the left side and the right side of the filling body and the total transverse deformation through a computer system.
Compared with the prior art, the invention has the following beneficial technical effects:
firstly, the invention can realize real-time and on-line remote monitoring of the left and right sides and total transverse deformation of the filling body by the mutual cooperation of the bidirectional displacement measuring device, the data transmission line, the communication substation, the communication master station, the telephone line, the ground data acquisition instrument and the computer system.
Secondly, the transverse deformation on-line monitoring system for the filling body can monitor the left side and the right side of the filling body in the whole process (from filling to final) and the total transverse deformation, but other devices cannot monitor the transverse deformation.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic structural diagram of an on-line monitoring system for lateral deformation of a filling body according to the present invention;
FIG. 2 is a schematic structural diagram of the bidirectional displacement measuring device of the present invention;
FIG. 3 is a schematic diagram of the internal structure of the bidirectional displacement measuring device according to the present invention;
FIG. 4 is a schematic structural view of a fixing plate according to the present invention;
FIG. 5 is a schematic structural connection diagram of the on-line monitoring system for transverse deformation of the filling body according to the present invention.
Description of reference numerals: A. the device comprises a filling body, B, solid coal, 1, a bidirectional displacement measuring device, 2, a steel pipe, 3, a fixed disc, 31, a stopping disc, 32, a first sealing plug, 33, a fastening ring, 4, a data transmission line, 5, a communication substation, 6, a communication main station, 7, a telephone line, 8, a ground data acquisition instrument, 9, a computer system, 10, an extension line, 11, a shell, 12, an upper cover, 13, a fastening bolt, 14, a stay cord displacement sensor, 141, a connecting line, 142, a stay cord, 143, a connecting ring, 144, a gasket, 15, a sealing ring, 16, a right stay cord outlet, 17, a left stay cord outlet, 18, a wire outlet, 19 and a second sealing plug.
Detailed Description
The invention provides an on-line monitoring system and a monitoring method for transverse deformation of a filling body, and in order to make the advantages and technical scheme of the invention clearer and clearer, the invention is described in detail with reference to specific embodiments.
Referring to fig. 1 to 3, the invention relates to a transverse deformation online monitoring system for a filling body, which comprises a bidirectional displacement measuring device 1, a fixed disk 3, a data transmission line 4, a communication substation 5, a communication master station 6, a telephone line 7, a ground data acquisition instrument 8 and a computer system 9, wherein the bidirectional displacement measuring device is sequentially connected with the communication substation 5 and the communication master station 6 through the data transmission line 4, the communication master station is connected with the ground data acquisition instrument 8 through the telephone line 7, the ground data acquisition instrument 8 transmits acquired data to the computer system 9, the bidirectional displacement measuring device, the fixed disk, the data transmission line, the communication substation, the communication master station and the telephone line are arranged underground, and the ground data acquisition instrument and the computer system are arranged underground; the two-way displacement measuring device 1 is arranged in the filling body a and is used for measuring the left side and the right side of the filling body a and the total transverse deformation.
Compared with the prior art, the invention can realize the monitoring of the left side and the right side of the filling body and the total transverse deformation, and is mainly realized by a bidirectional displacement measuring device.
As a main improvement point of the present invention, the bidirectional displacement measuring device 1 comprises a measuring main body, a steel pipe, an extension line and two pull rope displacement sensors fixed in the measuring main body, wherein the measuring main body comprises a shell 11 and an upper cover 12 matched with the shell 11, the shell 11 is a hollow cuboid structure, a pull rope outlet is respectively arranged at the left side and the right side of the shell, the pull rope outlet is respectively a left pull rope outlet 17 and a right pull rope outlet 16, the pull ropes 142 of the two pull rope displacement sensors are respectively led out through the pull rope outlets at the left side and the right side, the pull rope leading-out ends of the pull rope displacement sensors are both towards the pull rope outlets at the left side and the right side of the shell, and the pull rope axes of the two pull rope displacement sensors are overlapped with the corresponding pull; the purpose of this is to: the independent measurement of the transverse deformation of the left side and the right side of the filling body can be realized by arranging the two stay rope displacement sensors, and the method is very important for researching the deformation rule of the filling body and evaluating the stability of the filling body. Meanwhile, the 'pull rope axes of the two pull rope displacement sensors are overlapped with the corresponding pull rope outlet axes' so that the pull ropes keep 'linear motion' in the moving process, and the measurement precision is ensured.
Two wire outlet holes 18 are formed in the rear side of the shell, and connecting wires of the two stay cord displacement sensors are led out from the corresponding wire outlet holes 18 respectively;
a second sealing plug 19 for preventing initial slurry from entering the shell is arranged between the connecting line 141 of the two stay cord displacement sensors 14 and the corresponding outlet hole;
the part of the stay rope outlets on the left side and the right side, which is positioned outside the shell, is provided with an external thread, and the steel pipe adjacent to the shell is just connected with the external thread in a rotating mode.
A plurality of sections of steel pipes 2 are connected to the measuring main body in the horizontal direction, the adjacent steel pipes 2 are connected end to end through threads, and the number of the steel pipes is determined according to the measuring purpose.
Part of the pull rope displacement sensor is positioned in the steel pipe, an extension line 10 and a connecting ring 143 are further arranged in the steel pipe, the extension line and the pull rope of the pull rope displacement sensor are fixedly connected through the connecting ring 143, the connected extension line 10, the pull rope of the pull rope displacement sensor and the connecting ring 143 penetrate through the steel pipe, and a gasket 144 is arranged near the connecting ring;
as shown in fig. 4, the fixed disk 3 for fixing the extension line includes a blocking disk 31, a first sealing plug 32 and a fastening ring 33, the blocking disk is a disk/cross disk with a through hole in the middle, the blocking disk is fixedly connected with the first sealing plug, and the extension line passes through the first sealing plug and the through hole and then is connected with the blocking disk 31 through the fastening ring 33; the fixed disc 3 fixes the extension line, and the extension line is prevented from moving along with the filling body in the deformation process of the filling body.
A sealing ring 15 is arranged at the upper opening of the shell and is tightly connected with the upper cover, the pull rope displacement sensor is fixed in the shell through screws, and the shell and the upper cover are connected through a fastening bolt 13.
Further, the outer surface of the extension line is coated with lubricating oil for reducing resistance during the movement of the extension line.
Furthermore, the number of the bidirectional displacement measuring devices is determined according to the measuring purpose, and the number of the bidirectional displacement measuring devices is more than or equal to 1; the length of the extension line and the number of steel pipes are also determined according to the purpose of measurement.
Furthermore, the extension line is a rigid component, and the installed extension line is in a pre-tightening state so as to ensure that the stay cord displacement sensor can be pulled to generate deformation immediately after the filling body drives the baffle to move.
The communication substations can be arranged into a plurality of communication substations, and each communication substation is responsible for one filling working surface or one measuring area.
Further, the housing 11 and the upper cover 12 are preferably made of high-strength fine steel.
The following detailed description is given with reference to specific embodiments.
Example 1:
an on-line monitoring system for the transverse deformation of a filling body comprises a bidirectional displacement measuring device 1, a fixed disk 3, a data transmission line 4, a communication substation 5, a communication master station 6, a telephone line 7 (or Ethernet), a ground data acquisition instrument 8 and a computer system 9.
The above-mentioned two-way displacement measuring device 1 includes a measuring body, a steel pipe, an extension line, and two pull rope displacement sensors 14, and the measuring body includes a housing 11 and an upper cover 12.
The shell 11 is a hollow cuboid structure without a cover, a sealing ring 15 is arranged at the opening position of the upper part, and the stay cord displacement sensor 14 is fixed in the shell 11 through screws; the shell 11 is connected with the upper cover 12 through a bolt 13; the shell 11 and the upper cover 12 are preferably made of high-strength fine steel materials; a pull rope outlet 16/17 is respectively arranged at the left side and the right side of the shell 11, and a pull rope of the pull rope displacement sensor 14 is led out from the pull rope outlet 16/17; and the left and right stay rope outlets are provided with external threads outside the shell.
The cord leading ends of the cord displacement sensor 14 face the cord exits on the left and right sides of the housing, and the cord axes overlap with the corresponding cord exit axes.
Two wire outlet holes 18 are formed in one side of the shell 11, and connecting wires of the two stay cord displacement sensors are led out;
furthermore, a second sealing plug 19 is arranged between the connecting line of the stay cord displacement sensor and the wire outlet hole to prevent slurry in the initial filling stage from entering the shell.
Further, the extension line 10, the pulling rope, and the connection ring 143 have a size smaller than the inner diameter of the steel pipe.
Further, the extension cord 10 and the pull cord of the pull cord displacement sensor 14 are fixedly connected through the connection ring 143, and the connected extension cord, the pull cord 142 and the connection ring 143 penetrate through the steel pipe and are coated with lubricating oil on the outer side thereof, so as to reduce resistance during movement.
The number of the steel pipes is a plurality, one end of each steel pipe is an internal thread, the other end of each steel pipe is an external thread, and the steel pipes are connected end to end; the fixed disc comprises a blocking disc 31, a first sealing plug 32 and a fastening ring 33, the blocking disc 31 is a disc or a cross disc with a through hole in the middle, the blocking disc 31 is fixedly connected with the first sealing plug 32, and the extension line 10 penetrates through the first sealing plug and the middle hole of the blocking disc and then is connected with the blocking disc 31 through the fastening ring 33.
The extension 10 is a rigid member and does not elastically deform.
The length of the extension line and the number of steel pipes are determined according to the purpose of measurement.
The number of the bidirectional displacement measuring devices is determined according to the measuring purpose, the led-out connecting lines 141 are connected with the data transmission lines 4 through the junction boxes, and the data transmission lines 4 are connected with the communication substations 5.
The number of the communication substations 5 is a plurality, and each communication substation is responsible for one filling working surface or one measuring area;
the number of the communication master stations 6 is 1, and the communication substations 5 are connected with the communication master stations 6;
the communication master station 6 is connected with an underground telephone line 7 (or Ethernet);
the telephone line 7 (or Ethernet) is connected with the ground data acquisition instrument 8;
the number of the computer systems is a plurality, and the computer systems are connected with the ground data acquisition instrument.
As shown in FIG. 5, the system for on-line monitoring of lateral deformation of a filling body is applied to a filling body A in the middle of a solid coal B.
Example 2:
the first step is as follows: according to a specific measurement purpose, intercepting extension lines with proper lengths, selecting a certain number of steel pipes, connecting a shell with the steel pipes, the extension lines and a fixed disc, and installing a connected bidirectional displacement measurement device at a proper position;
the second step is that: connecting a connecting wire of the bidirectional displacement measuring device with the data transmission wire through a junction box, connecting the data transmission wire with the communication substation, connecting the communication substation with a communication master station, connecting the communication substation with an underground telephone wire (Ethernet or light), connecting the underground telephone wire (Ethernet or light) with a ground data acquisition instrument, and connecting the ground data acquisition instrument with a computer system;
the third step: the bidirectional displacement measuring device is encoded by an encoder and zeroed.
The fourth step: filling the goaf, and carrying out real-time and online remote monitoring on the left side and the right side of the filling body and the total transverse deformation through a computer system.
Parts not described in the above modes can be realized by adopting or referring to the prior art.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (7)
1. The utility model provides a horizontal deformation on-line monitoring system of obturator, its includes two-way displacement measurement device, fixed disk, data transmission line, communication substation, communication main website, telephone line, ground data acquisition appearance and computer system, two-way displacement measurement device pass through data transmission line in proper order with communication substation, communication main website connect, the communication main website pass through the telephone line with ground data acquisition appearance connect, ground data acquisition appearance with the data transmission who gathers give computer system, its characterized in that:
the bidirectional displacement measuring device is embedded in the filling body and is used for measuring the left side and the right side of the filling body and the total transverse deformation;
the bidirectional displacement measuring device comprises a measuring main body, an extension line, a steel pipe and two pull rope displacement sensors fixed in the measuring main body, wherein the measuring main body comprises a shell and an upper cover matched with the shell, the shell is of a hollow cuboid structure, pull rope outlets are respectively arranged on the left side and the right side of the shell, pull ropes of the two pull rope displacement sensors are respectively led out through the pull rope outlets on the left side and the right side, a pull rope leading-out end of the pull rope displacement sensor on the left side faces the pull rope outlet on the left side of the shell, a pull rope leading-out end of the pull rope displacement sensor on the right side faces the pull rope outlet on the right side of the shell, and pull rope axes of the two pull rope displacement sensors are overlapped with corresponding pull rope outlet; two wire outlet holes are formed in the rear side of the shell, and connecting wires of the two stay cord displacement sensors are led out from the corresponding wire outlet holes respectively;
sealing plugs II for preventing the initial filling slurry from entering the shell are arranged between the connecting lines of the two stay cord displacement sensors and the corresponding wire outlet holes;
the parts of the stay rope outlets on the left side and the right side, which are positioned outside the shell, are provided with external threads, the steel pipe is provided with a plurality of sections, the steel pipe adjacent to the shell is just rotationally connected to the external threads, the other steel pipes are sequentially connected through threads, part of stay ropes of the stay rope displacement sensor are positioned in the steel pipe, an extension line and a connecting ring are also arranged in the steel pipe, the extension line is fixedly connected with the stay ropes of the stay rope displacement sensor through the connecting ring, and the connected extension line, the stay ropes of the stay rope displacement sensor and the connecting ring transversely penetrate through the inside of the steel pipe;
the fixing disc comprises a blocking disc, a first sealing plug and a fastening ring, the blocking disc is a disc/cross disc with a through hole in the middle, the blocking disc is fixedly connected with the first sealing plug, and the extension line penetrates through the first sealing plug and the through hole and then is connected with the blocking disc through the fastening ring.
2. The system for on-line monitoring of the transverse deformation of the filling body according to claim 1, is characterized in that: the upper opening of the shell is provided with a sealing ring which is tightly connected with the upper cover, the stay cord displacement sensor is fixed in the shell through screws, and the shell is connected with the upper cover through bolts.
3. The system for on-line monitoring of the transverse deformation of the filling body according to claim 1, is characterized in that: the outer surface of the extension line is coated with lubricating oil for reducing resistance in the movement process of the extension line.
4. The system for on-line monitoring of the transverse deformation of the filling body according to claim 1, is characterized in that: the number of the bidirectional displacement measuring devices is determined according to the measuring purpose, and the number of the bidirectional displacement measuring devices is more than or equal to 1; the length of the extension line and the number of the steel pipes are also determined according to the measurement purpose.
5. The system for on-line monitoring of the transverse deformation of the filling body according to claim 1, is characterized in that: the extension line is a rigid member, a plurality of communication substations can be arranged, and each communication substation is responsible for one filling working surface or one measuring area.
6. The system for on-line monitoring of the transverse deformation of the filling body according to claim 1, is characterized in that: the bidirectional displacement measuring device, the fixed disc, the data transmission line, the communication substation, the communication master station and the telephone line are arranged underground, and the ground data acquisition instrument and the computer system are arranged on the underground.
7. A method for monitoring transverse deformation of a filling body is characterized by adopting the filling body transverse deformation on-line monitoring system of any one of claims 1-6, and the monitoring method sequentially comprises the following steps:
s1, intercepting extension lines with proper lengths according to specific measurement purposes, selecting a certain number of steel pipes, connecting the shell with the steel pipes, the extension lines and the fixed disc, and installing the connected bidirectional displacement measurement device at a proper position;
s2, connecting a connecting wire of the bidirectional displacement measuring device with the data transmission wire through a junction box, connecting the data transmission wire with the communication substation, connecting the communication substation with a communication master station, connecting the communication substation with a telephone wire, connecting the telephone wire with a ground data acquisition instrument, and connecting a computer system with the ground data acquisition instrument;
s3, encoding the bidirectional displacement measuring device through an encoder, and zeroing the bidirectional displacement measuring device;
and S4, filling the goaf, and carrying out real-time online remote monitoring on the left side and the right side of the filling body and the total transverse deformation through a computer system.
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