CN108225431B - Multi-parameter sensor and method for continuously observing mining subsidence area and landslide body - Google Patents
Multi-parameter sensor and method for continuously observing mining subsidence area and landslide body Download PDFInfo
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- CN108225431B CN108225431B CN201810045514.7A CN201810045514A CN108225431B CN 108225431 B CN108225431 B CN 108225431B CN 201810045514 A CN201810045514 A CN 201810045514A CN 108225431 B CN108225431 B CN 108225431B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The invention relates to a multi-parameter sensor for continuously observing mining subsidence areas and landslides, which comprises a shell, a sensor control assembly and a socket assembly, wherein the shell is provided with a plurality of sensors; the sensor control assembly is fixed in the shell, the socket assembly is connected with the shell, the sensor control assembly is connected with the socket assembly through a lead, and the lead is connected with an external control and display device through the socket assembly; and a centralizer is arranged on the outer side of the shell. Meanwhile, the invention also discloses a using method of the multi-parameter sensor for continuously observing the mining subsidence area and the landslide mass. The multi-parameter sensor is simple in structure, and can be installed, and data can be transmitted among the multi-parameter sensors only through the 6-core wire, so that the situation that the installation of the multi-parameter sensors cannot be realized due to too many connecting wires is avoided, and more reliable data are provided for landslide mass or mining area collapse.
Description
Technical Field
The invention relates to the technical field of precision measurement devices, in particular to an underground multi-parameter sensor for continuously observing and monitoring changes of various physical quantities such as mining subsidence areas, landslides and the like and a using method thereof.
Background
The continuous observation of the deformation conditions of the surface and the underground of the mining subsidence area and the landslide body is one of the effective ways for monitoring and forecasting the geological disasters of the mining subsidence area and the landslide body. Subsurface dip is a pseudo-vector that has not only a change in magnitude, but also a change in direction, usually described in terms of dip and dip.
In the actual observation of a mining subsidence area and a landslide body, the change of inclination at different depths in the mining subsidence area and the landslide body needs to be observed, usually, a drilling inclination instrument is used, a drilling hole with a corresponding depth is drilled in the mining subsidence area and the landslide body according to the mining depth and the depth of a landslide zone, the drilling hole is placed to a corresponding inclinometer pipe, a positioning groove is arranged in one direction in the inclinometer pipe, the direction from the ground to the well bottom of a drilling inclinometer sensor is ensured to be consistent all the time, the inclinometer pipe is made of engineering plastics and aluminum alloy, the drilling inclination instrument is fixed, and the drilling inclination instrument is fixedly arranged at one position below the well and monitors the inclination of the landslide towards one direction for a long time; the other is a sliding type, and the sensors are periodically placed in the well to measure the inclination of different depths in the well according to a certain interval from one point to another point. The first measurement mode has the limitation of limited measurement point placement quantity, because the sensor of each inclinometer needs to be led out by a multi-core cable, and a plurality of sensors are needed for measuring slope belts with different depths, so that a plurality of next cables which cannot be accommodated in a certain aperture are caused, the inner diameter of an inclinometer is only 60mm, and the plurality of cables and the sensors are very difficult to be placed underground after penetrating through the inner wall of a casing in a certain direction; the other is a sliding type drilling inclinometer, wherein an inclinometer is placed in a drilled open hole, the outer wall of the inclinometer is filled with original fine soil, a sensor of the inclinometer is lifted upwards from the bottom of the hole at a certain interval of 1m, 1m is lifted to measure one point, and all measuring points in the hole are processed to measure the inclination of different depths in the hole. The sliding type drilling inclination instrument has the problems that when the landslide deformation is large, an inclination measuring sensor is easy to block, cannot be lifted up or lowered to the bottom, data cannot be obtained, continuous observation cannot be carried out, and manpower and material resources are consumed.
The prior art discloses a drilling inclinometer downhole probe, which comprises a sealed metal cylinder and an inclination angle sensor arranged in the sealed metal cylinder, wherein the sensor comprises an electronic compass and two capacitance type inclination angle sensors which are orthogonally arranged, the capacitance type inclination angle sensors are arranged on the inclination zero point adjusting device, and the inclination zero point adjusting device capable of axially adjusting is arranged. The device has the same problems as the fixed drilling inclinometer, and when a plurality of fixed drilling inclinometer sensors are installed, the problems that the cables are too many and the installation cannot be carried out exist; the installation is complicated, and an inclination zero adjusting device needs axial adjustment; the measurement parameters are single, and only the change of the inclination angle is measured.
The tilt angle sensor in the prior art can only detect the tilt angle and cannot monitor other types of parameters, and when a plurality of tilt angle sensors in the prior art are tested, the direction consistency of the plurality of tilt angle sensors cannot be ensured, and meanwhile, the sealing performance of the tilt angle sensors in the prior art cannot be completely ensured.
Disclosure of Invention
In view of the above analysis, the present invention aims to provide a multi-parameter sensor and a method for continuously observing mining subsidence areas and landslides, so as to solve the problems that the existing sensor has single measurement parameter, is complex to install, cannot be installed due to too many cables in a drilling inclination instrument, has inconsistent directions of a plurality of inclination sensors, and has poor sealing performance.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a multi-parameter sensor for continuous observation of mining subsidence areas, landslides, comprising a housing, a sensor control assembly and a socket assembly; the sensor control assembly is fixed in the shell, the socket assembly is connected with the shell, the sensor control assembly is connected with the socket assembly through a lead, and the lead is connected with an external control and display device through the socket assembly; and a centralizer is arranged on the outer side of the shell.
The invention has the following beneficial effects: the multi-parameter sensor disclosed by the invention is simple in structure and can be applied to monitoring the sedimentation of the bottom surface of a mining area and the deformation of a landslide body.
On the basis of the scheme, the invention is further improved as follows:
further, the shell comprises an upper shell and a lower shell, and the lower shell is fixed at the lower end of the upper shell.
The shell is divided into the upper shell and the lower shell, so that the installation and the use of the multi-parameter sensor can be facilitated.
Further, the socket assembly comprises a first socket and a second socket, the first socket is fixed at the upper end of the upper shell, and the second socket is fixed at the lower end of the upper shell; the first socket and the second socket are connected through a wire.
The beneficial effect of adopting the further scheme is that: the sockets are arranged on the upper shell and the lower shell, so that the connection of the wires among the multiple parameter sensors can be ensured, and the test accuracy is ensured.
Furthermore, one end of the first socket is connected with the sensor control assembly through a wire, the other end of the first socket is connected with the multi-core plug in a sealing mode, and the multi-core plug is connected with the external control and display device through a wire.
The beneficial effect of adopting the further scheme is that: the other end of the first socket is connected with the multi-core plug in a sealing mode, so that the sealing performance inside the shell is guaranteed, and the accuracy of the multi-parameter sensor test is further guaranteed.
Furthermore, one end of the second socket is connected with the sensor control component through a wire, and the other end of the second socket is connected with the other multi-parameter sensor connected in series through a multi-core plug.
One end of the second socket is connected with the sensor control assembly through a wire, so that data acquisition is facilitated, data transmitted by different multi-parameter sensors can be distinguished, and the testing accuracy is guaranteed; the other end of the second socket is connected with the other multi-parameter sensor connected in series through the multi-core plug, so that the transmission of the test data of the multi-parameter sensor can be ensured.
Further, the sensor control assembly comprises a control plate, an inclination angle control plate, a water content control plate and a soil pressure control plate, wherein the inclination angle control plate, the water content control plate and the soil pressure control plate are respectively connected with the control plate through leads.
The invention is provided with a plurality of control panels, which can ensure the test diversity of the multi-parameter sensor, and meanwhile, the connection of various parameter control panels and the control panels can ensure the independent transmission of the tested parameters and prevent the influence on the test accuracy.
Furthermore, the control board is respectively connected with the first socket and the second socket through wires.
Further, an electrode is mounted on the moisture content control plate, penetrates out of the shell and is exposed outside the shell; the soil pressure plate is connected with a pressure sensor through a line, and the pressure sensor is fixed on the side wall of the shell.
The water-cut control plate in the invention can be used underground, but the water-cut control plates in the prior art cannot be used underground.
Furthermore, an electrode is connected to the moisture content control plate, the electrode penetrates through the upper shell, and the electrode is not in contact with the shell wall of the upper shell.
A method of using a multi-parameter sensor for continuous observation of mining subsidence areas, landslides, comprising securing the multi-parameter sensor in a borehole dip tube, the orientation of a dip control plate in the multi-parameter sensor being in line with the orientation of the borehole dip tube; installing the borehole inclinometer pipe underground, and testing the multi-parameter sensor through an external control and display device; when a plurality of multi-parameter sensors are needed, the multi-parameter sensors are sequentially arranged end to end.
The method is simple to use and very practical, and simultaneously ensures that the landslide body or the mining area collapses and provides more and more reliable data.
The invention has the beneficial effects that:
(1) the multi-parameter sensor is simple in structure, a plurality of multi-parameter sensors can be installed, data can be transmitted among the multi-parameter sensors only through the 6-core wire, the situation that the installation of the plurality of sensors cannot be realized due to too many connecting wires is avoided, and more reliable data are provided for landslide mass or mining area collapse;
(2) the multi-parameter sensor can acquire the parameters of the inclination angle, the water content and the soil pressure, can better evaluate the geological disaster condition of a subsidence area or a landslide body, and does not have the sensor capable of simultaneously testing the parameters of the plurality of sensors in the prior art, so that the multi-parameter sensor has more practical value than single inclination angle change evaluation.
In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
FIG. 1 is a schematic diagram of the open state of the multi-parameter sensor of the present invention.
In the figure, 1-multi-core plug, 2-screwing nut, 3-socket A, 4-stainless steel shell A, 5-copper column, 6-control board, 7-dip angle board and control board connecting line, 8-dip angle board, 9-water content board and control board connecting line, 10-water content board, 11-soil pressure board and control board connecting line, 12-electrode, 13-soil pressure board, 14-six-core socket connecting line, 15-socket B, 16-four-core cable, 17-stainless steel shell B, 18-pressure sensor.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.
The invention discloses a multi-parameter sensor for continuously observing mining subsidence areas and landslides, which comprises a multi-core plug 1, a screwing nut 2, a socket A3, a stainless steel shell A4, a stainless steel shell A upper cover, a stainless steel shell A lower cover, a copper column 5, a control panel 6, an inclined angle plate and control panel connecting wire 7, an inclined angle plate 8, a water content plate and control panel connecting wire 9, a water content plate 10, a soil pressure plate and control panel connecting wire 11, an electrode 12, a soil pressure plate 13, a six-core socket connecting wire 14, a socket B15, a four-core cable 16, a stainless steel shell B17 and a pressure sensor 18, wherein the plug 1 is connected with the socket A3 through a nut 2, the socket A3 is fixed on the stainless steel shell A upper cover, the stainless steel shell A upper cover is fixed on the upper end of the stainless steel shell A4, the copper column 5, the control panel 6, the inclined angle plate 8, The water content plate 10 and the soil pressure plate 13 are both fixed inside a stainless steel shell A4, a socket B15 is fixed on a lower cover of the stainless steel shell A, the lower cover of the stainless steel shell A is fixed at the lower end of a stainless steel shell A4, a pressure sensor 18 is fixed on a stainless steel shell B17, one end of a four-core cable 16 is connected with the soil pressure plate 13, and the other end of the four-core cable penetrates through the lower cover of the stainless steel shell A to be connected with the pressure sensor 18; when in normal operation, stainless steel enclosure A4 is held above stainless steel enclosure B17 by screws.
The multi-core plug 1 is fixed at the upper end of a stainless steel shell A4 and is fixedly connected with a socket A3 in an upper cover of the stainless steel shell A through a screwing nut 2, a cable in the stainless steel shell A4 is connected with the multi-core plug 1 through a socket A3, and the multi-core plug 1 is connected with an external control and display device so as to be convenient for data detection; the multi-core plug 1 comprises a screwing nut 2, a first plug and a second plug, the first plug is of a hollow structure, a cable is used in the first plug, one end of the first plug is fixedly connected with the upper end of a socket A3 through the screwing nut 2, a sealing rubber ring is arranged between the first plug and a socket A3, and the condition that the pressure of 1Mpa water can be met through an indoor pressurization experiment and an outdoor field experiment is guaranteed; the other end of the first plug is provided with an internal thread structure for fixing the second plug; the second plug is also of a hollow structure, the outer side of one end of the second plug is of a threaded structure, one side of the second plug with an external thread structure is connected with one end of the first plug with an internal thread structure, a sealing rubber ring is arranged between the second plug and the first plug to prevent water outside the second plug from entering the multi-core plug 1, the other end of the second plug is of a conical structure with a hole in the middle, and the inner diameter of the hole is matched with the outer diameter of the cable; the structure of the multi-core plug 1 can ensure that the cable is normally connected with the outside, and can prevent outside moisture from entering the multi-core plug 1 and the stainless steel shell A, so as to prevent the performance of the multi-parameter sensor from being affected;
screwing the nut 2 to fix the multi-core plug 1 and the socket A3, and hermetically connecting the multi-core plug 1 and the socket A3 to prevent underground water from entering the stainless steel shell A4 and affecting the test precision of the whole device; the screwing nut 2 is of a hollow annular structure; it is worth noting that a multi-core plug A is fixed at the center of the multi-core plug 1, and the multi-core plug 1 and the multi-core plug A are of an integrated structure;
the socket A3 is a gold-plated six-core plastic socket, threads are machined on the periphery of the upper end of the socket A3, and the screwing nut 2 is fixedly connected with the threads machined on the periphery of the socket A3; the socket A3 is fixed in the upper cover of the stainless steel casing a, wherein, the socket A3 and the upper cover of the stainless steel casing a can be an integrated structure or a separated structure, when the socket A3 and the upper cover of the stainless steel casing a are an integrated structure, the socket A3 is fixed in the upper cover of the stainless steel casing a, when the socket A3 and the upper cover of the stainless steel casing a are a separated structure, when the socket A3 is fixed in the upper cover of the stainless steel casing a, the socket A3 needs to be fixed by a sealing ring to prevent external water from entering the stainless steel casing a, or the socket A3 is directly welded in the upper cover of the stainless steel casing a, and it is worth noting that a multi-core socket is also arranged in the socket A3 and corresponds to the multi-core plug a in the multi-core plug 1; the stainless steel shell A4 is a cylindrical tubular structure, and the inner sides of the upper end and the lower end of the stainless steel shell A are provided with internal thread structures which are used for fixedly connecting the upper cover of the stainless steel shell A and the lower cover of the stainless steel shell A; the stainless steel shell A upper cover comprises a body, a first annular structure and a second annular structure, wherein the body, the first annular structure and the second annular structure are integrated, the body is of an annular structure, the first annular structure is fixed on one side of the body, the second annular structure is fixed on the other side of the body, the interiors of the body, the first annular structure and the second annular structure are communicated, external thread structures are arranged on the outer sides of the first annular structure and the second annular structure, the outer diameter of the first annular structure is larger than that of the second annular structure, the external threads of the first annular structure are in threaded connection with the upper end of a stainless steel shell A4, a sealing ring is sleeved between the first annular structure and the body to ensure the sealing performance of the interior of the stainless steel shell A4, the second annular structure is connected with the multi-core socket 1, and a socket A3 is fixed in the interior of the; the structure of the lower cover of the stainless steel shell A is basically the same as that of the upper cover of the stainless steel shell A, but a counter bore is arranged on the body of the lower cover of the stainless steel shell A to ensure the smooth passing of the four-core cable 16, and the counter bore in the embodiment is sealed by using a rubber pad and a nut after the four-core cable 16 penetrates out, so that external moisture is prevented from entering the stainless steel shell A, and the sealing property in the stainless steel shell A is ensured; it is worth noting that the counter bore of the invention needs to be sealed after penetrating through the four-core cable 16, so as to ensure the sealing performance in the stainless steel shell A4; notably, the upper cover and the lower cover of the stainless steel shell A are in the form of reverse threads, so that the lead in the stainless steel shell A can be prevented from being disordered when the stainless steel shell A is fixed;
the control board 6 is connected with the lower end of the upper cover of the stainless steel shell A through a copper column 5, and the control board 6 is connected with the socket A3 through a cable; the inclination angle plate 8 is positioned below the control plate 6 and is connected with the control plate 6 through the copper column 5, and the inclination angle plate 8 and the control plate 6 are connected with the control plate connecting line 7 through the inclination angle plate; the water content plate 10 is fixed below the inclined angle plate 8 and is connected with the control plate 6 through a water content plate and control plate connecting line 9, and the water content plate 10 is connected with the inclined angle plate 8 through a copper column 5; the soil pressure plate 13 is fixed below the water content plate 10 and is connected with the control plate 6 through a soil pressure and control plate connecting line 11, and the soil pressure plate 13 is connected with the water content plate 10 through a copper column 5; it should be noted that the control board 6 is connected to the socket a4 and the socket B15 by cables, so as to ensure normal data transmission; when the control panel 6 is connected with the lower end of the upper cover of the stainless steel shell A, the lower end of the upper cover of the stainless steel shell A is provided with a sleeve buckle, one end of the copper column 5 is screwed in the sleeve buckle at the lower end of the upper cover of the stainless steel shell A, and the other end of the copper column 5 is in a sleeve buckle form, so that the upper end of the copper column 5 on the inclined angle plate 8 is fixedly connected with the sleeve buckle; the lower end of the copper column 5 on the inclined angle plate 8 is in a sleeve buckle form, so that the inclined angle plate is conveniently connected with a lower plate; the connection mode of the copper columns 5 on other lower plates is the same as the mode, so that the connection can ensure that the inclination angle direction of the inclination angle plate 8 is unchanged, and when a plurality of multi-parameter sensors are subjected to series test, the inclination angles of the inclination angle plates on the multi-parameter sensors can be ensured to be consistent;
the electrode 12 is fixed on the water content plate 10, two through holes are formed in the side face of the stainless steel shell A4, the positions of the through holes correspond to the positions of the two electrodes 12, the electrode 12 is in an L-shaped structure and comprises a transverse section and a longitudinal section, the electrode 12 is in an integrated structure, one end of the transverse section is fixedly connected with the water content plate 10, the transverse section is very short, one end of the longitudinal section is connected with the other end of the transverse section, the other end of the longitudinal section is a free end, and the longitudinal section is integrally exposed outside the stainless steel shell A4; the transverse section passes through a through hole of the stainless steel shell A4 to be connected with the longitudinal section; the structure of the electrode 12 is designed to be L-shaped, so that the water content plate 10 can be conveniently tested, and the structure of the electrode 12 can be adapted to the structure of the stainless steel shell A4; notably, the transverse section of the electrode 12 is sleeved with a sealing sleeve through the stainless steel casing A4 to prevent the stainless steel casing A4 from influencing the test of the electrode 12; meanwhile, the longitudinal section of the electrode 12 is not in contact with the outer side of the stainless steel shell A4; notably, current moisture-containing panels cannot be used downhole, whereas the moisture-containing panels of the present invention can be used downhole; it should be noted that the transverse section of the electrode 12 connected to the water-content plate 10 in the present invention is relatively short, because if the transverse section is too long, the testing precision is affected;
the soil pressure plate 13 is connected with a pressure sensor 18 through a four-core cable 16 and used for receiving data during testing; the quad cable 16 is threaded out of the lower cover of the stainless steel shell a, and the quad cable 16 in this embodiment is threaded out of the through hole of the lower cover of the stainless steel shell a, however, the through hole needs to be sealed after the quad cable 16 is threaded out, and the sealing rubber ring around the quad cable 16 is tightly pressed by a nut to prevent water around the quad cable 16 from flowing into the stainless steel shell a and affecting the test.
The socket B15 is fixed at the lower end of the stainless steel shell A4 and is fixed on the lower cover of the stainless steel shell A, the socket B15 is a gold-plated six-core plastic socket, and the socket A4 is connected with the socket B15 through a six-core socket connecting wire 14;
the stainless steel shell B17 is a circular tube structure, and the side surface of the stainless steel shell B17 is provided with a through hole; a pressure sensor 18 is arranged in the through hole, and one side of the pressure sensor 18 is connected with the soil pressure plate 13 through a four-core cable 16; it is worth noting that the socket B15 is also hermetically connected through the multi-core plug 1, and the cable of the multi-core plug is led out from the socket B15 and then connected with the upper ends of other multi-parameter sensors connected in series; it should be noted that a hole is formed in the side wall of the stainless steel housing B17, and the hole is used for fixing the pressure sensor 18 and preventing the pressure sensor 18 from moving, and meanwhile, nylon is used to fill up the gap between the stainless steel housing B17 and the pressure sensor 18 and prevent the pressure sensor from moving, and the stainless steel housing B17 is used to fix the pressure sensor 18 in this embodiment, so that the beauty and practicability of multi-parameter sensing can be ensured; it is noted that the stainless steel casing B17 in the present invention may be replaced with a plate-like structure or other structures as long as the normal test of pressure can be satisfied.
It is worth noting that the housing of the multi-parameter sensor is made of stainless steel, the socket A3 and the socket B15 are all gold-plated six-core plastic sockets, one end of six wires in the stainless steel housing A4 is welded to the six-core plastic socket, the other end of the six wires is welded to the control board, threads are processed on the socket A3 and the socket B15, and rubber sealing rings are arranged on vertical end faces of the threads, so that the six-core cable can be screwed to the socket A3 and the socket B15 after nuts are screwed on the six-core cable, and the pressure of water of 1Mpa can be met through indoor pressurization experiments and outdoor field experiments.
It is worth noting that the outer side of the stainless steel casing A4 is also provided with a centralizer, the centralizer structurally comprises a circular ring-shaped body and a spring steel plate, the circular ring-shaped body is sleeved on the outer side of the stainless steel casing A4 and is fixedly connected with the stainless steel casing A4; one end of the spring steel plate is fixedly connected with the circular body, the other end of the spring steel plate is a free end, the other end of the spring steel plate is scattered outwards in a direction deviating from the axis direction of the circular body, and the head of the other end of the spring steel plate is bent inwards; the centralizer comprises 4 spring steel plates with the thickness of 1mm, the length of 13 cm and the width of 0.15 m, so that a multi-parameter sensor is ensured to be arranged in the center of a well hole when the multi-parameter sensor is put into the well, and undisturbed soil is conveniently filled on the side edge; however, the structure of the centralizer is not limited to the spring steel plate, and other structures can be adopted as long as the centralizer can ensure that the multi-parameter sensor is positioned at the center of the well hole after being put into the well.
It is worth noting that holes with different apertures are drilled on the lower cover of the stainless steel shell A and the side surface of the stainless steel shell B17 of the multi-parameter sensor, and the stainless steel shell B17 is fixed on the lower cover of the stainless steel shell A; meanwhile, during specific work, the inclinometer is fixed on the stainless steel shell A4, the inclinometer is also fixed on the stainless steel shell B17, the direction of the positioning grooves in the inclinometer is ensured to be consistent, and the inclination measurement direction of the inclination plate is ensured to be consistent, so that the multi-parameter sensor is connected with the inclinometer consistently, and the direction from the sensor to the underground is ensured to be consistent all the time.
It is worth noting that the multi-parameter sensor is internally provided with a control plate 6, an inclination angle plate 8, a water content plate 10 and a soil pressure plate 13; the inclination plate 8 integrates all micro-electromechanical and compensating circuits for measuring inclination angles in two directions, the inclination plate 8 is fixed in a stainless steel shell A4, and the direction is consistent with that of an inclination measuring tube connected with the multi-parameter sensor; the water content plate 10 is provided with two wires which are respectively connected with the electrode 12, and a stainless steel screw of the electrode 12 is sleeved with a rubber seal ring and then is connected with a stainless steel shell A; the pressure sensor 18 is connected to the lower part of the stainless steel shell A through a four-core cable, the four-core cable penetrates through a counter bore on the lower cover of the stainless steel shell A, and a sealing rubber ring around the four-core cable is tightly pressed by a nut to be fixed, so that water around the four-core cable is prevented from flowing into the stainless steel shell A and affecting the test.
The invention is worth noting, the invention is a multi-parameter sensor for testing various underground material flow, wherein, the multi-parameter includes the measurement of the dip angle, the soil pressure and the water content, and is mainly used for the ground settlement of the mining area and the deformation monitoring of the landslide body; according to the invention, a multi-parameter sensor is arranged in a stainless steel shell through 4 circuit boards, 6 wires in a 6-core socket at the upper end and the lower end of the stainless steel shell A are connected with a control panel while being connected with each other, the control panel is respectively connected with a slope measuring plate, a water content measuring plate and a soil pressure plate, an instrument on a well head sends a command to control the conduction of a corresponding relay on the control panel, and the instrument acquires data of the corresponding sensor, so that the data can be transmitted only through 6 core wires among all the sensors, the situation that the installation of a plurality of sensors cannot be realized due to too many connecting wires is avoided, and more reliable data are provided for landslide or; the stainless steel shell A and the stainless steel shell B are connected through screws to form a set of multi-parameter sensors, a plurality of groups of multi-parameter sensors are required to be installed in each well, and each group of sensors are connected through an inclinometer pipe, so that the direction consistency of the multi-parameter sensors is ensured; holes which are punched in advance are formed in the stainless steel shell A and the end face of the inclinometer pipe, so that the direction of the inclinometer pipe is consistent with the direction of the sensor when the inclinometer pipe is installed on site; the multiple groups of sensors are connected through a multi-core plug, an O-shaped ring is arranged on the end face of the multi-core plug, and the multi-core plug is locked through a nut, so that the water pressure of 1Mpa can be guaranteed.
The dip angle plate in the multi-parameter sensor is provided with a built-in (MEMS) micro solid pendulum hammer, changes of a static gravity field are measured and converted into dip angle changes, standard current is output at 4-20 mA, an output signal is high in anti-interference performance, and the dip angle plate is professionally applied to work in severe environments. The product is produced by adopting the latest MEMS micro-electro-mechanical system sensing production process, the temperature error and the nonlinear error are accurately compensated and corrected, the maximum accuracy of a small range can reach 0.003 degree, the volume is small, the radio frequency is internally arranged, and an anti-electromagnetic interference circuit is adopted. The high-precision and high-range moderate monitoring of mining subsidence areas and landslides is performed, the inclined relative inclination angle is measured, a zero setting device of a bidirectional inclination angle is omitted, and the installation and production process is simple.
It is worth noting that the control board 6 in each multi-parameter sensor in the invention is connected with the dip angle board 8, the water content board 10 and the soil pressure board 13, and the connection positions of the boards and the control board 6 are different and are coded, when the control board 6 transmits the detected data to the external control and display device, different test parameter values can be distinguished according to the different codes of the displayed data; meanwhile, when a plurality of multi-parameter sensors are tested in series, the control panel 6 on each multi-parameter sensor needs to be coded in advance, the inclination angle plate 8, the water content plate 10 and the soil pressure plate 13 which are connected with each control panel 6 are also coded, and when an external control and display device needs a certain parameter at a certain position, specific numerical values can be obtained according to the coded codes which are coded in advance.
The multi-parameter sensors are connected through a six-core cable, so that the multi-parameter sensors are very easy to install in the holes no matter how many multi-parameter sensors are connected, the uppermost ends of the uppermost multi-parameter sensors in the holes are also connected to a ground acquisition instrument through the six-core cable, and the sensors are connected in series.
The six-core cable can be manufactured indoors according to the known length in advance, the size of the six-core cable can be determined on the installation site according to the position of a landslide strip or a geological structure diagram, the six-core cable can be manufactured on the site, the six wire ends in the cable are stripped, a rubber ring and a nut are sleeved on the six wire ends, the stripped six wire ends are welded to a six-core plastic plug, the plug is inserted into a stainless steel plug matched with the nut, and finally the nut is screwed, so that the six-core cable is manufactured.
In another embodiment of the invention, a method of using a multi-parameter sensor for continuous observation of mining subsidence areas, landslides is disclosed, comprising: fixing a multi-parameter sensor on the drilling inclined pipe to ensure that the direction of the inclined plate is consistent with that of the drilling inclined pipe so as to ensure the accuracy and precision of the test; if a plurality of multi-parameter sensors are required to be tested, connecting the cable of the socket at the lowest end of the first multi-parameter sensor with the socket at the highest end of the second multi-parameter sensor, wherein the connection mode of the next multi-parameter sensor is also the same; all the multi-parameter sensors are sequentially fixed on the drilling inclined pipe; the borehole slant pipe is placed downhole and the test is started, with the output of data being selected according to the needs of the tester.
In conclusion, the invention provides the multi-parameter sensor and the method for continuously observing the mining subsidence area and the landslide body, the geological disaster condition of the subsidence area or the landslide body can be better evaluated according to the inclination angle, the water content and the soil pressure parameter acquired by the multi-parameter sensor, and the evaluation has more practical value than the single inclination angle change evaluation.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (2)
1. A multi-parameter sensor for continuous observation of mining subsidence areas, landslides, comprising a housing, a sensor control assembly and a socket assembly; the sensor control assembly is fixed in the shell, the socket assembly is connected with the shell, the sensor control assembly is connected with the socket assembly through a lead, and the lead is connected with an external control and display device through the socket assembly; a centralizer is mounted on the outer side of the shell;
the shell comprises an upper shell and a lower shell, and the lower shell is fixed at the lower end of the upper shell;
the receptacle assembly includes a first receptacle and a second receptacle; one end of the second socket is connected with the sensor control component through a wire, and the other end of the second socket is connected with the other multi-parameter sensor connected in series through a multi-core plug;
the sensor control assembly comprises a control plate, an inclination angle control plate, a water content control plate and a soil pressure control plate, wherein the inclination angle control plate, the water content control plate and the soil pressure control plate are respectively connected with the control plate through leads;
the first socket and the second socket are both gold-plated six-core plastic sockets;
the upper shell and the lower shell are both fixedly provided with inclinometer pipes, and the directions of the positioning grooves of the inclinometer pipes are consistent; the inclination angle control plate is fixedly arranged in the upper shell and is consistent with the direction of the inclinometer pipe;
the centralizer comprises an annular body and a spring steel plate, wherein the annular body is sleeved outside the upper shell and is fixedly connected with the upper shell; one end of the spring steel plate is fixedly connected with the annular body, and the other end of the spring steel plate is a free end; the other end of the spring steel plate is scattered outwards in a direction deviating from the axis direction of the circular ring-shaped body, and the head of the other end of the spring steel plate is bent inwards;
the first socket is fixed at the upper end of the upper shell, and the second socket is fixed at the lower end of the upper shell; the first socket and the second socket are connected through a lead;
one end of the first socket is connected with the sensor control assembly through a wire, the other end of the first socket is hermetically connected with a multi-core plug, and the multi-core plug is connected with the external control and display device through a wire;
the control board is connected with the first socket and the second socket through wires respectively;
the water content control plate is provided with an electrode, and the electrode penetrates out of the shell and is exposed outside the shell; the soil pressure plate is connected with a pressure sensor through a lead, and the pressure sensor is fixed on the side wall of the lower shell;
the water content control plate is connected with an electrode, the electrode penetrates out of the upper shell, and the electrode is not in contact with the wall of the upper shell;
the first socket and the second socket are connected through a six-core socket connecting wire;
the control panel is connected with the lower end of the upper cover of the upper shell through a copper column, and the control panel is connected with the first socket through a cable; the inclination angle plate is positioned below the control plate and is connected with the control plate through a copper column, and the inclination angle plate is connected with the control plate through an inclination angle plate and a control plate connecting line; the water content plate is fixed below the inclined angle plate and is connected with the control plate through a connecting line of the water content plate and the control plate, and the water content plate is connected with the inclined angle plate through a copper column; the soil pressure plate is fixed below the water content plate and is connected with the control plate through a soil pressure and control plate connecting line, and the soil pressure plate is connected with the water content plate through a copper column.
2. Use of a multi-parameter sensor for continuous observation of mining subsidence areas, landslides according to claim 1 comprising securing the multi-parameter sensor in a borehole dip tube, the orientation of a dip control plate in the multi-parameter sensor coinciding with the orientation of the borehole dip tube; installing the borehole inclinometer pipe underground, and testing the multi-parameter sensor through an external control and display device; when a plurality of multi-parameter sensors are needed, the multi-parameter sensors are sequentially arranged end to end.
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| CN108716906B (en) * | 2018-08-14 | 2024-04-12 | 河北工业大学 | Fixed intelligent inclinometer, system and implementation method |
| CN111928784B (en) * | 2020-09-27 | 2021-01-26 | 华思（广州）测控科技有限公司 | Slope displacement monitoring device |
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