CN114894850A - Monitoring probe and monitoring method suitable for underground water in coastal intertidal zone - Google Patents

Monitoring probe and monitoring method suitable for underground water in coastal intertidal zone Download PDF

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Publication number
CN114894850A
CN114894850A CN202210338371.5A CN202210338371A CN114894850A CN 114894850 A CN114894850 A CN 114894850A CN 202210338371 A CN202210338371 A CN 202210338371A CN 114894850 A CN114894850 A CN 114894850A
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monitoring
sensors
data
underground water
sensor
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辛沛
詹泸成
吴俊杰
余夏杨
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Hohai University HHU
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/041Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00Thermometers specially adapted for specific purposes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L11/00Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/30Assessment of water resources

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Abstract

The invention discloses a monitoring probe and a monitoring method suitable for groundwater in a coastal intertidal zone, wherein the monitoring probe comprises the following components: the device comprises a columnar shell, a plurality of soil conductivity sensors, a plurality of temperature sensors and a water pressure sensor; the columnar shell is formed by sequentially assembling a plurality of segments which are abutted end to end, one end of the columnar shell is conical, a through hole is formed in the conical contraction end, and the other end of the columnar shell is of a columnar structure; the invention realizes multi-parameter and multi-point synchronous monitoring of underground water in coastal intertidal zones through a sectional design structure, is convenient for monitoring various parameters such as underground water temperature, conductivity, water level and the like in real time, and accurately realizes synchronous monitoring of the same or different parameters of the underground water at different depths in the vertical direction.

Description

Monitoring probe and monitoring method suitable for underground water in coastal intertidal zone
Technical Field
The invention belongs to the technical field of underground water information acquisition and monitoring, and particularly relates to a monitoring probe and a monitoring method suitable for underground water in a coastal intertidal zone.
Background
The material and energy exchange between surface water and underground water has important influence on the stability of the coastal wetland, and the monitoring of relevant hydrodynamic force and water environment parameters in coastal intertidal zones can be carried out, thereby providing important basis for ecological protection in the coastal intertidal zones. At present, the monitoring technology related to coastal surface water is relatively mature, and how to realize efficient and real-time synchronous monitoring of underground water parameters is a difficult problem to be solved urgently.
The traditional underground water monitoring means adopts methods of ground drilling and underground sampling analysis, the operation is complex, the time and the labor are consumed, the monitored water sample is separated from the original environment, and the monitoring error is large. Along with scientific and technological progress, bury formula groundwater monitoring probe deeply and developed, this technique is through artificial a plurality of groundwater monitoring probes of cloth accuse fixed point for the monitoring sample no longer breaks away from original environment, and the data that the monitoring obtained are more accurate, credible, but this technique still can't the synchronous monitoring of better realization multiple spot data on the timescale: for monitoring underground water data within a certain range, in the vertical direction, when the same parameter or different parameters at different depths are monitored, a plurality of sensor monitoring probes of the same type or different types need to be installed at fixed points, because the sensor probes are mutually independent and installed in sequence, synchronous data monitoring can be started only after all the sensors are installed and the environment is stable, and the waiting time is long; if the sensor probes start to work in sequence after being installed, synchronous work of the sensors cannot be achieved, parameter monitoring data in partial time periods are lost, the time interval of data acquisition is fixed (for example, 30 s), the time interval is used as a division basis, and the data change of each monitored point is possibly not matched in time in consideration of the complexity of hydrodynamic parameters in coastal intertidal zones. In the actual operation process, the installation of the sensor probes with various quantities and types is difficult, the data transmission lines of the sensors are too complicated, and meanwhile, good protection measures are not provided, so that the sensor probes placed in a high-salt environment can be corroded, seeped and damaged. So far, no better solution is available in the technical aspect of multi-parameter synchronous monitoring of groundwater in coastal intertidal zones.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides a monitoring probe and a monitoring method suitable for underground water in the coastal intertidal zone; the monitoring probe and the monitoring method can realize multi-parameter synchronous monitoring, simplification, high accuracy, convenient and flexible installation and are suitable for multi-point synchronous monitoring of underground water in coastal intertidal zones.
The technical scheme is as follows: in a first aspect the present invention provides a segmented probe suitable for monitoring groundwater in coastal intertidal zones, comprising:
the device comprises a columnar shell, a plurality of soil conductivity sensors, a plurality of temperature sensors and a water pressure sensor;
the cylindrical shell is formed by sequentially assembling a plurality of sections which are abutted end to end, one end of the cylindrical shell is conical, a through hole is formed in the conical contraction end, and the other end of the cylindrical shell is of a cylindrical structure;
the soil conductivity sensors, the temperature sensors and the water pressure sensors are respectively installed in each section of the cylindrical shell through quick-connection waterproof joints.
In a further embodiment, a plurality of sections of the cylindrical shell are internally provided with a line collecting groove in a penetrating way, and each section of the cylindrical shell is provided with a line collecting device; and a wire outlet is formed in each section of the columnar shell, and a data transmission cable of the soil conductivity sensor, the temperature sensor and the water pressure sensor enters the concentrator through the wire outlets.
In a further embodiment, the open end of the line collecting groove corresponds to the through opening, and the line collecting groove receives the data transmission cable penetrating through the line collecting groove of each segment and extends the received data transmission cable outwards from the through opening.
In a further embodiment, each segment of the cylindrical shell is provided with a monitoring hole, the monitoring holes are communicated with the outside and are matched with the sensor sensitive element, and the monitoring holes are used for exposing the sensor sensitive element in the underground water environment to monitor various parameters of the underground water in real time and outputting monitoring data outwards through the data transmission cable, so that the parameter change process of the underground water environment is obtained.
In a further embodiment, the water pressure sensor is mounted at the inner bottom end of the cylindrical housing by a quick-connect waterproof joint.
The invention provides a sectional probe monitoring method suitable for monitoring underground water in coastal intertidal zones, which comprises the following steps:
drilling a borehole in a monitoring area;
assembling the segmented probe for synchronously monitoring multiple parameters according to the monitoring data requirement;
and inserting the assembled underground water monitoring probe into the drill hole, synchronously monitoring various parameters in the drill hole in real time by a plurality of soil conductivity sensors, a plurality of temperature sensors and a water pressure sensor in the columnar shell, and outputting a monitoring result.
In a further embodiment, a method of assembling a segmented probe for multiparameter synchronous monitoring based on monitoring data requirements includes:
selecting and setting the number and the type of the sensors according to the monitoring data requirement;
determining the relative position of a corresponding sensor in the whole assembled monitoring probe according to the required data monitoring requirements of different depths in the vertical direction;
the soil conductivity sensors, the temperature sensors and the water pressure sensors are connected by adopting quick-connection waterproof joints and are connected into a whole through the columnar shell, and data transmission cables of the sensors enter the concentrator through the wire outlets, are uniformly and externally output through the wire collecting grooves after being integrated, are electrically connected with the receiving unit and are used for receiving various parameter data of synchronous monitoring.
In a further embodiment, selecting a corresponding number and type of sensors according to the monitoring data requirement further comprises:
selecting a soil conductivity sensor to carry out multi-section series connection on the conductivity data of underground water at different depths in the vertical direction as the monitoring requirement;
selecting temperature sensors to carry out multi-section series connection on underground water temperature data with different depths in the vertical direction according to monitoring requirements;
and selecting a soil conductivity sensor and a temperature sensor for cross series connection according to the monitoring requirements of conductivity and temperature data of underground water at different depths in the vertical direction.
Has the advantages that: compared with the prior art, the invention has the following advantages:
(1) the invention adopts multi-section assembly, and can flexibly assemble the water pressure sensor, the temperature sensor and the soil conductivity sensor according to the monitoring requirement, thereby achieving multi-parameter and multi-point monitoring.
(2) The device has the advantages of simple structural design, convenient operation, easy installation, independent disassembly of each section and convenient maintenance and replacement.
(3) The built-in sensor of every section passes through the column shell, accomplishes the connection and assembles of main part to adopt the quick-connect water joint in assembling the in-process, avoided the emergence of infiltration condition.
(4) The invention adopts the design of sectional assembly and columnar integration of the sensors, and after the monitoring probe is placed in the drill hole, the time for starting to monitor data by each sensor is the same, thereby ensuring the consistency of data monitoring of each sensor on a time scale and realizing the purpose of synchronously monitoring the conductivity, the temperature and the water level change of underground water at different depths in a certain range.
Drawings
FIG. 1 is a schematic flow chart of the operation of the apparatus of the present invention;
FIG. 2 is a schematic view of the working arrangement of the apparatus of the present invention;
FIG. 3 is a diagram of groundwater information production collected by the apparatus of the present invention in an exemplary embodiment;
FIG. 4 is a sectional view of the apparatus of the present invention;
FIG. 5 is a schematic view of the waterproof quick connector structure of the inventive device;
FIG. 6 is a schematic view of the construction of a single segment of a cylindrical housing of the device of the present invention;
FIG. 7 is a cross-sectional view of a single segment of a cylindrical housing of the device of the present invention;
FIG. 8 is a schematic diagram of a device hub according to the present invention.
Reference numerals: 1. drilling, 2, a soil conductivity sensor, 3, a temperature sensor, 4, a water pressure sensor, 5, a monitoring hole, 6, a quick-connection waterproof connector, 7, a columnar shell, 8, a transmission cable, 9, a wire outlet, 10, a concentrator, 11, a line concentration groove, 12 and a monitoring probe.
Detailed Description
In order to more fully understand the technical content of the present invention, the technical solution of the present invention will be further described and illustrated with reference to the following specific embodiments, but not limited thereto.
Example 1
The embodiment shown in fig. 1 to 2 provides a method for monitoring groundwater in coastal intertidal zones by using a segmented probe, which comprises the following steps:
drilling a borehole 1 in a selected monitoring area, and drilling a cylindrical borehole 1 with the depth suitable for the underground water phase to be monitored and the diameter of 10 cm;
according to the requirement of monitoring data, assembling a multi-parameter synchronous monitoring segmented probe, wherein data to be monitored of underground water in a monitoring area is matched with a corresponding sensor, taking a nine-section sand wetland natural protection area at a Yangtze river estuary as an example, main monitoring objects in the area are the conductivity and the temperature of the underground water at different depths in the vertical direction and the change of the water level of the underground water, so that 3 soil conductivity sensors 2 with the measurement precision of 1% FS and 3A-level high-precision temperature sensors 3 with the resolution of 0.05 ℃ are selected, 1 shell is 316L sealed by fluorine-silicon rubber, and a water pressure sensor 4 with the comprehensive precision of +/-0.1% FS (+/-5 mm) is selected;
the assembled underground water monitoring probe 12 is inserted into the drill hole 1, the soil conductivity sensors 2, the temperature sensors 3 and the water pressure sensors 4 in the columnar shell 7 start to synchronously monitor all parameters in the drill hole 1 in real time, monitoring results are output, physical parameter values measured by the monitoring probe 12 are recorded every unit time (such as 10 s) in the implementation, and collected data are exported and processed through the data transmission cable 8 connected with all the sensors. Referring to fig. 3, a real-time information map which is acquired and transmitted to a computer terminal in a certain time period after the nine-segment sand wetland natural protection area sectional type monitoring probe 12 works stably is shown.
Further, according to the requirement of monitoring data, the method for assembling the segmented probe for multi-parameter synchronous monitoring comprises the following steps:
selecting the number and the type of the sensors according to the monitoring data requirements;
determining the relative position of the corresponding sensor in the whole assembled monitoring probe 12 according to the required data monitoring requirements of different depths in the vertical direction;
the soil conductivity sensors 2, the temperature sensors 3 and the water pressure sensors 4 are connected into a whole through the columnar shell 7 by adopting the quick-connection waterproof joints 6, the data transmission cables 8 of the sensors enter the concentrator 10 through the wire outlets 9, are uniformly and outwards output through the line concentration groove 11 after being integrated, are electrically connected with the receiving unit and are used for receiving various parameter data of synchronous monitoring.
Further, according to the monitoring data demand, select corresponding quantity, the sensor of kind still includes:
selecting a soil conductivity sensor 2 to carry out multi-section series connection for the conductivity data of underground water at different depths in the vertical direction as the monitoring requirement;
selecting a temperature sensor 3 to carry out multi-section series connection on the temperature data of underground water at different depths in the vertical direction as the monitoring requirement;
and for the monitoring requirements of conductivity and temperature data of underground water at different depths in the vertical direction, the soil conductivity sensor 2 and the temperature sensor 3 are selected to be connected in series in a crossing manner.
The present embodiment shown in fig. 4 to 8 provides an economical probe suitable for groundwater monitoring in coastal intertidal zones, comprising: the device comprises a drill hole 1, a soil conductivity sensor 2, a temperature sensor 3, a water pressure sensor 4, a monitoring hole 5, a quick-connection waterproof connector 6, a columnar shell 7, a transmission cable 8, a wire outlet 9, a concentrator 10, a wire collecting groove 11 and a monitoring probe 12.
The cylindrical shell 7 is formed by sequentially assembling a plurality of sections which are abutted end to end, one end of the cylindrical shell 7 is conical, a through hole is formed in the conical contraction end, and the other end of the cylindrical shell is of a cylindrical structure; the conical end of the columnar shell 7 is higher than the ground, so that seawater is prevented from flowing backwards into the monitoring probe 12 to damage a sensing device;
the soil conductivity sensors 2, the temperature sensors 3 and the water pressure sensors 4 are respectively arranged in each section of the columnar shell 7 through the quick-connection waterproof joints 6.
A plurality of sections of the cylindrical shell 7 are internally provided with a line collecting groove 11 in a penetrating way, and each section of the cylindrical shell 7 is provided with a line collector 10; an outlet 9 is formed in each section of the columnar shell 7, and a data transmission cable 8 of the soil conductivity sensor 2, the temperature sensor 3 and the water pressure sensor 4 enters the concentrator 10 through the outlet 9.
The open end of the line collecting groove 11 corresponds to the through opening, and the line collecting groove 11 receives the data transmission cable 8 which passes through the line collecting 10 of each segment and extends the received data transmission cable 8 outwards from the through opening.
Each segment of the columnar shell 7 is provided with a monitoring hole 5, the monitoring holes 5 are communicated with the outside and are matched with a sensor sensitive element, and the monitoring holes are used for enabling the sensitive element to be exposed in the underground water environment to monitor various parameters of underground water in real time and outputting monitoring data outwards through a data transmission cable 8, so that the parameter change process of the underground water environment is obtained.
The water pressure sensor 4 is installed at the inner bottom end of the columnar shell 7 through a quick-connection waterproof joint 6.
In conclusion, the invention adopts multi-section assembly, and can flexibly assemble the water pressure sensor 4, the temperature sensor 3 and the soil conductivity sensor 2 according to the monitoring requirement, thereby achieving multi-parameter and multi-point monitoring; the device has the advantages of simple structural design, convenient operation, easy installation, independent disassembly of each section and convenient maintenance and replacement; the built-in sensor of each section finishes the connection and assembly of the main body through the columnar shell 7, and a quick-connection waterproof joint 6 is adopted in the assembly process, so that the water seepage situation is avoided; according to the invention, the sensors are assembled in sections and designed in a columnar integration manner, after the monitoring probe 12 is placed in the drill hole 1, the time for the sensors to start monitoring data is the same, the consistency of the data monitoring of the sensors on a time scale is ensured, and the purposes of synchronously monitoring the conductivity and the temperature of underground water at different depths in a certain range and the water level change of the underground water are realized; due to the design of the concentrator 10 and the collecting groove 11, the ordered planning of the data transmission cables 8 of the sensors is realized, and the circuit is simplified; the sensor combination, the position relative to the borehole 1 and the combined length of the monitoring probe 12, are selected according to the specific requirements of the monitoring.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (8)

1. A segmented probe adapted for coastal intertidal zone groundwater monitoring, comprising:
the device comprises a columnar shell, a plurality of soil conductivity sensors, a plurality of temperature sensors and a water pressure sensor;
the cylindrical shell is formed by sequentially assembling a plurality of sections which are abutted end to end, one end of the cylindrical shell is conical, a through hole is formed in the conical contraction end, and the other end of the cylindrical shell is of a cylindrical structure;
the soil conductivity sensors, the temperature sensors and the water pressure sensors are respectively arranged in each section of the cylindrical shell through quick-connection waterproof joints.
2. The segmented probe suitable for coastal intertidal zone groundwater monitoring as claimed in claim 1, wherein a plurality of segments of the cylindrical shell are provided with a wire collecting groove through the inside, and a wire collector is installed in each segment of the cylindrical shell; and a wire outlet is formed in each section of the columnar shell, and a data transmission cable of the soil conductivity sensor, the temperature sensor and the water pressure sensor enters the concentrator through the wire outlets.
3. The segmented probe suitable for coastal intertidal zone groundwater monitoring as claimed in claim 2, wherein the open end of the trunking slot corresponds to the through opening, and the trunking slot receives the data transmission cable passing through the hub of each segment and extends the received data transmission cable outwards from the through opening.
4. The articulating probe head of claim 1, wherein each segment of said cylindrical housing defines a monitoring aperture, said aperture being in communication with the environment and adapted to expose a sensor for monitoring a parameter of groundwater exposure.
5. The articulating probe head of claim 1, wherein said water pressure sensor is mounted to the inner bottom end of the cylindrical housing by a quick connect water tight fitting.
6. A method for monitoring underground water in coastal intertidal zones by a segmented probe, which is based on the monitoring probe in claim 1, is characterized by comprising the following steps:
drilling a borehole in a monitoring area;
assembling the segmented probe for synchronously monitoring multiple parameters according to the monitoring data requirement;
and inserting the assembled underground water monitoring probe into the drill hole, and synchronously monitoring various parameters in the drill hole in real time by a plurality of soil conductivity sensors, a plurality of temperature sensors and a water pressure sensor in the columnar shell and outputting a monitoring result.
7. The method for monitoring the underground water in the coastal intertidal zone according to claim 6, wherein the method for assembling the multi-parameter synchronous monitoring segmented probe according to the monitoring data requirement comprises the following steps:
selecting the number and the type of the set sensors according to the monitoring data requirements;
determining the relative position of a corresponding sensor in the whole assembled monitoring probe according to the required data monitoring requirements of different depths in the vertical direction;
the soil conductivity sensors, the temperature sensors and the water pressure sensors are connected by adopting quick-connection waterproof joints, and in the whole process of connecting the soil conductivity sensors, the temperature sensors and the water pressure sensors through the columnar shell, data transmission cables of the sensors enter the concentrator through the wire outlets, are uniformly and outwards output through the line concentration grooves after being integrated, are electrically connected with the receiving unit and are used for receiving various parameter data of synchronous monitoring.
8. The method of claim 6, wherein selecting a corresponding number and type of sensors according to the monitoring data requirement further comprises:
selecting a soil conductivity sensor to carry out multi-section series connection on the conductivity data of underground water at different depths in the vertical direction as the monitoring requirement;
selecting temperature sensors to carry out multi-section series connection on underground water temperature data with different depths in the vertical direction according to monitoring requirements;
and selecting a soil conductivity sensor and a temperature sensor for cross series connection according to the monitoring requirements of conductivity and temperature data of underground water at different depths in the vertical direction.
CN202210338371.5A 2022-04-01 2022-04-01 Monitoring probe and monitoring method suitable for underground water in coastal intertidal zone Pending CN114894850A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104713998A (en) * 2013-12-13 2015-06-17 张正宏 Extendable wireless soil measurement apparatus
CN105091840A (en) * 2015-05-04 2015-11-25 中国地质科学院探矿工艺研究所 Guide-wheel-free inclinometer for measuring deep displacement of landslide and installation method thereof
CN105696540A (en) * 2015-08-25 2016-06-22 北京中力智研物联科技有限公司 Measuring method and device for foundation pit deep horizontal displacement and underground water level
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CN208188032U (en) * 2018-05-14 2018-12-04 水利部南京水利水文自动化研究所 Tubular type TDR soil moisture sensor
CN208140707U (en) * 2018-05-21 2018-11-23 吉林农业大学 A kind of ambient soil monitoring system device
CN110006803A (en) * 2019-04-04 2019-07-12 杨国华 A kind of device and monitoring method of long-range monitoring seepage action of ground water speed
CN209545068U (en) * 2019-05-17 2019-10-25 国网内蒙古东部电力有限公司电力科学研究院 A kind of electric power harness fixed fastener
CN110361108A (en) * 2019-06-19 2019-10-22 戴长雷 Cold low temp area ground temperature automated watch-keeping facility and monitoring method
CN110187068A (en) * 2019-06-27 2019-08-30 河南师范大学 A kind of controllable multi-pass road high efficiency composition device measuring carbon nitrogen greenhouse gas concentration
CN212935465U (en) * 2020-10-10 2021-04-09 天津方舟百维能源科技有限责任公司 Oil field logging monitoring is with convenient fixed cable
CN112268996A (en) * 2020-10-13 2021-01-26 广东省地质建设工程勘察院 Geological environment monitoring device and method

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