CN110779772B - Soil underground water layered monitoring well system and well building method thereof - Google Patents
Soil underground water layered monitoring well system and well building method thereof Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000005070 sampling Methods 0.000 claims abstract description 70
- 239000003673 groundwater Substances 0.000 claims abstract description 45
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
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- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
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Abstract
The invention discloses a soil groundwater layered monitoring well system and a well building method thereof, belonging to the technical field of groundwater monitoring, which can change the traditional layered monitoring mode, not only realizes the conversion from mixed layer monitoring to layered monitoring mode of a single layer monitoring well and a multilayer exploration hole, but also solves the well building difficulty of the traditional nest type monitoring well when dealing with the multilayer section groundwater level, adopts an isolation mode by abandoning the traditional water mixing in the groundwater monitoring according to the elevator shaft, realizes the monitoring of the multilayer section groundwater by the point-to-station monitoring mode, is theoretically not influenced by the number of sections, adopts the operation of sampling after the first butt joint from station to station, has high monitoring stability and is not easy to make mistakes, thereby realizing the all-weather automatic monitoring of the groundwater level of each section by only one pipe, having the functions of remote control and data transmission and realizing the unmanned automatic monitoring, the well is difficult to construct, the cost is low, the occupied area is small, and the service life is long.
Description
Technical Field
The invention relates to the technical field of underground water monitoring, in particular to a soil underground water layered monitoring well system and a well building method thereof.
Background
Groundwater monitoring refers to the task of taking a sample of groundwater from a well for detection by drilling a well into the subterranean formation. The single-pipe multilayer monitoring well is the most conventional underground water multilayer monitoring well with the largest construction quantity, and is a well pipe is arranged in a drilling hole, gravel is filled and water is stopped outside the well pipe in a layering manner, however, because the well pipe is not layered, the water level in the well is a mixed water level, and the water sample is also a mixed water sample, the collected underground water sample is likely to be polluted by other layers, and the detection accuracy of the underground water in the layer is influenced. The well body structure of multilayer hydrogeological exploration hole is the same with single tube multilayer monitoring well, and the difference is mainly that the bore is great relatively, can carry out the layering experiment of drawing water, mainly used pinpoints the geological conditions in target area, knows stratum lithology, aquifer figure, thickness etc..
The single-tube multilayer monitoring well and the multilayer hydrogeological exploration hole cannot be layered for long-term monitoring and sampling due to the fact that layering is not carried out in the tube, and exploration resources are wasted to a certain extent. Therefore, a layered modification system in an underground water multilayer monitoring well is needed, the monitoring well in a mixed layer in the pipe can be modified into a layered long-term observation monitoring well in the pipe, parameters and water samples of a plurality of underground target layers can be independently collected in a layered mode, the conversion from mixed layer monitoring to a layered monitoring mode of a single-layer monitoring well and a multilayer exploration hole is realized, and the purpose of accurately depicting the hydrogeological characteristics of the aquifer is achieved.
On the basis, the Chinese invention publication No. CN108458901A discloses a layered reconstruction system in an underground water multilayer monitoring well, which comprises a layered water stopper, a sampling pipe and a well pipe fixing plate, wherein the upper end of the layered water stopper is connected with the sampling pipe and is hung in a well shaft through the sampling pipe; the well pipe fixing plate is fixed at the opening of the well casing, a plurality of bayonets are arranged on the well pipe fixing plate, and the top end of the sampling tube is clamped on the bayonets of the well pipe fixing plate; the barrel of layering sealing up ware link up from top to bottom, the last port links to each other with the sampling tube, the outer wall border of layering sealing up ware is equipped with horizontal bearing groove, is equipped with annular water-swelling rubber area on the bearing groove.
Although the invention realizes the conversion of the mixed-layer monitoring mode of the single-layer monitoring well and the multilayer exploration hole to the layered monitoring mode, fully utilizes the prior exploration monitoring well for reconstruction, does not need to drill again, saves a large amount of resources, greatly saves the cost of long-term underground water monitoring, but still does not get rid of the traditional defects of one hole and multiple pipes, lay many different levels of sleeve pipe monitoring in a monitoring well promptly, the layering is then monitored, an degree of automation is low, the monitoring step is loaded down with trivial details and inefficiency, be difficult to adapt to the demand of times, secondly the layering shut-in degree of difficulty is big, inevitable can take place the mixed phenomenon between the groundwater of different levels, disturb the monitoring precision, thirdly the groundwater level is more, the stringing quantity also increases with it with the degree of difficulty, lead to monitoring cost can steeply rise, above three point is not enough has restricted groundwater layering monitoring's development.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a soil underground water layered monitoring well system and a well building method thereof, which can change the traditional layered monitoring mode, not only realize the conversion from the mixed layer monitoring to the layered monitoring mode of a single-layer monitoring well and a multi-layer exploration hole, but also solve the well building difficulty of the traditional nested monitoring well in dealing with the underground water level of multiple layers, imitate the underground water monitoring of an elevator shaft, abandon the traditional mixed water and adopt the isolation mode, realize the monitoring of the underground water of the multiple layers by the point-to-point monitoring mode, theoretically are not influenced by the number of the layers, adopt the operation of docking and sampling before arriving at the station, have high monitoring stability and are not easy to make mistakes, realize the all-weather automatic monitoring of the underground water level of each layer by only one pipe, and have the functions of remote control and data transmission, the unmanned automatic monitoring is realized, the well building difficulty is small, the cost is low, the occupied area is small, and the service life is long.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A soil groundwater layering monitoring well system comprises a cast iron sleeve, a master control room is installed at the upper end of the cast iron sleeve, a main controller module and a power module are installed in the master control room, the main controller module is connected with the power module, a monitoring lift car is arranged in the cast iron sleeve, guide sliders are fixedly connected to the side walls of two ends of the monitoring lift car respectively, a pair of vertical guide rails matched with the guide sliders are fixedly connected to the inner ends of the monitoring lift car respectively, the guide sliders are slidably connected with the vertical guide rails, a traction module is further installed in the master control room and connected with the main controller module, the traction module comprises a traction machine, the traction machine is fixedly connected with the upper end of the monitoring lift car through a steel rope, a plurality of sampling holes are drilled in the cast iron sleeve, sampling modules are installed in the sampling holes and comprise sampling pipes, the automatic water quality monitoring device is characterized in that an electromagnetic valve is installed on the sampling tube, a fixed butt flange fixedly connected with one end of a sampling hole is kept away from the sampling tube, an auxiliary controller module and a water quality analysis module are installed in the monitoring lift car, the water quality analysis module is connected with the auxiliary controller module, the auxiliary controller module is connected with a main controller module through a traveling cable, the water quality analysis module is connected with a power water pump, a connecting pipe is connected to the water inlet end of the power water pump, the butt flange is moved through the fixedly connected end of the connecting pipe, the end of the connecting pipe, away from the power water pump, is matched with the fixed butt flange, and a starting mechanism is installed in the movable butt flange.
Furthermore, the starting mechanism comprises four electric push rods and an insulating locating rod, one end of the movable butt flange, which is close to the fixed butt flange, is provided with four starting grooves distributed in an annular array, the electric push rods are arranged in the starting grooves, the output end of the electric push rods is fixedly connected with the insulating locating rod, one end of the insulating locating rod, which is far away from the electric push rods, is fixedly connected with a movable conducting strip, one end of the fixed butt flange, which is close to the movable butt flange, is provided with four locating grooves matched with the insulating locating rod, the bottom wall in the locating grooves is fixedly connected with a fixed conducting strip, one end of the movable conducting strip, which is far away from the fixed conducting strip, is connected with the auxiliary controller module through a lead, one end of the fixed conducting strip, which is far away from the movable conducting strip, is also connected with the electromagnetic valve through a lead, and the butt joint mode of the station is adopted, so that the accuracy of butt joint of the sampling pipe and the connecting pipe can be improved, difficult the condition that results in leaking because of water pressure is too big to take place the skew and take place when the sample, improves the security of sample monitoring, can realize moreover that the solenoid valve just can be opened after the power supply, both can improve the stability of sampling tube break-make, can avoid again to the circular telegram problem of wiring of solenoid valve, easy to assemble and control.
Further, fixed flange one end fixedly connected with filter screen is kept away from to the sampling tube, install the input level gauge in the sampling tube, and the input level gauge is located between filter screen and the solenoid valve, the input level gauge is connected with the wire on the fixed conducting strip equally, and the filter screen plays the filtering action to silt and the large granule foreign matter of groundwater, thereby prevents to lead to blockking up the sample failure after getting into the sampling tube, and the input level gauge plays the measuring action to the groundwater level of corresponding interval.
Furthermore, fixed flange is close to and removes flange one end fixedly connected with assorted chance water inflation sealing washer, meet water inflation sealing washer surface coating and have the ageing resistant layer, meet the water inflation sealing washer and be used for improving the leakproofness of fixed flange when butt joint with removing the flange butt joint, be difficult for leaking from the butt joint gap, the ageing resistant layer plays the effect of meeting water inflation sealing washer isolation air of protection, prolongs its life, avoids leading to sealing performance to descend because of ageing.
Further, the monitoring car is kept away from connecting pipe one end and is installed laser emitter, a plurality of laser receiver of fixedly connected with on the lateral wall of cast iron sleeve pipe inner, and laser receiver keep unanimous with the thief hole in quantity and height, can fix a position corresponding thief hole rapidly through laser emitter and laser receiver's cooperation, accuracy nature when improving the quick butt joint of sample.
Furthermore, the main control unit module is connected with a wireless transmission module, the wireless transmission module is connected with a cloud server, monitoring data of the underground water level can be remotely transmitted, unified management is facilitated, and backup and sharing of the data can be achieved.
Further, the power module comprises a solar cell panel, a power charging unit and a voltage stabilizing circuit which are connected in sequence, the voltage stabilizing circuit is connected with the controller module, the power charging unit is further connected with a battery power supply, the battery power supply is further connected with the voltage stabilizing circuit, the monitoring power demand is maintained by the mode that solar energy is collected and converted into electric energy for power supply, and the environmental protection concept of sustainable development is met while the monitoring cost is saved.
Furthermore, the cast iron sleeve pipe adopts the nodular cast iron material, the coating of cast iron sleeve pipe surface has nanometer anti-rust coating, and the cast iron sleeve pipe intensity of nodular cast iron material is high, toughness and plasticity are high, have certain wearability, and its excellent mechanical properties can satisfy secret complicated atress environment, and nanometer anti-rust coating plays the effect of protection cast iron sleeve pipe, avoids its corrosion and corrosion that contact with groundwater for a long time and lead to.
Further, the number of the sampling holes should be not less than 10, and theoretically, the more the number of the sampling holes is, the greater the yield of the monitoring well system is, and the more the cost is saved.
A well construction method of a soil underground water layered monitoring well system comprises the following steps:
s1, core drilling and geophysical logging: determining a scale of a hydrographic logging result curve according to the complexity of lithology and the drilling depth, wherein the well depth is less than or equal to 300m and is preferably 1:100 or 1: 200; if the well depth is larger than 300m, 1:500 is preferably adopted, and a target interval is determined;
s2, designing a layered monitoring well system: designing a layered monitoring well system according to the target layer section, and completing field assembly and debugging, including waterproof testing, circuit testing and the like;
s3, drilling a monitoring borehole: drilling and reaming by using a drilling machine, and after drilling is finished, putting a cast iron casing into the monitoring well hole so as to protect the well wall and avoid collapse of the monitoring well hole;
s4, installing a layered monitoring well system: after installing the master control room on the ground, hang the steel cable and be connected with the monitoring car, install the monitoring car to vertical guide rail through a pair of direction slider on, carry out monitoring trial run for the first time after the inspection is errorless.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme can realize changing traditional layering monitoring mode, not only realized single-deck monitoring well and multilayer exploration hole by mixing the conversion of layer monitoring to layering monitoring mode, the well-building degree of difficulty of traditional nest type monitoring well when coping with multilayer section groundwater level has been solved simultaneously, imitate the elevartor shaft in groundwater monitoring, abandon traditional muddy water and adopt the form of keeping apart, realize the monitoring to multilayer section groundwater through point-to-point monitoring mode of arriving at the station, theoretically not influenced by interval quantity, adopt the operation of taking a sample after arriving at the station and docking earlier, the high difficult mistake that is difficult for of monitoring stability, with this realization only accomplishes the all-weather automated monitoring of each interval groundwater level with a pipe, and have remote control and data transmission's function, realize unmanned automatic monitoring, the well-building degree of difficulty is little, and is with low costs, small floor area, long service life.
(2) The starting mechanism comprises four electric push rods and an insulating locating rod, one end of the movable butt flange, which is close to the fixed butt flange, is provided with four starting grooves distributed in an annular array, the electric push rods are arranged in the starting grooves, the output end of the electric push rods is fixedly connected with the insulating locating rod, one end of the insulating locating rod, which is far away from the electric push rods, is fixedly connected with a movable conducting strip, one end of the fixed butt flange, which is close to the movable butt flange, is provided with four locating grooves matched with the insulating locating rod, the bottom wall in the locating grooves is fixedly connected with a fixed conducting strip, one end of the movable conducting strip, which is far away from the fixed conducting strip, is connected with the sub-controller module through a lead, one end of the fixed conducting strip, which is far away from the movable conducting strip, is also connected with the electromagnetic valve through a lead, and the adoption of a station butt joint mode can not only improve the butt joint accuracy of the sampling pipe and the connecting pipe, but also prevent the water leakage caused by the deflection due to overlarge water pressure during sampling, the safety of sampling monitoring is improved, the solenoid valve can be opened after power supply can be realized, the stability of sampling tube on-off can be improved, the problem of wiring electrification of the solenoid valve can be avoided, and the electromagnetic valve is convenient to install and control.
(3) The sampling tube is kept away from fixed flange one end fixedly connected with filter screen, install the input level gauge in the sampling tube, and the input level gauge is located between filter screen and the solenoid valve, the input level gauge is connected with the wire on the fixed conducting strip equally, the filter screen plays the filtering action to silt and the large granule foreign matter of groundwater, thereby prevent to lead to blockking up sample failure after getting into the sampling tube, the input level gauge plays the measuring action to the groundwater level of corresponding interval.
(4) Fixed flange is close to and removes flange one end fixedly connected with assorted chance water inflation sealing washer, and the coating of chance water inflation sealing washer surface has anti-aging layer, and the leakproofness of chance water inflation sealing washer when being used for improving fixed flange and removing the flange butt joint is difficult for leaking from the butt joint gap, and anti-aging layer plays the effect of protecting chance water inflation sealing washer isolation air, prolongs its life, avoids leading to the sealing performance to descend because of ageing.
(5) The monitoring car is kept away from connecting pipe one end and is installed laser emitter, a plurality of laser receiver of fixedly connected with on the lateral wall of cast iron sleeve pipe inner, and laser receiver keeps unanimous with the thief hole in quantity and height, can fix a position corresponding thief hole rapidly through laser emitter and laser receiver's cooperation, accuracy nature when improving the quick butt joint of sample.
(6) The main control unit module is connected with the wireless transmission module, and the wireless transmission module is connected with the cloud ware, can remote transmission to ground water level's monitoring data, convenient unified management can also realize backup and the sharing to data.
(7) The power module is including the solar cell panel that connects gradually, power charging unit and voltage stabilizing circuit, and voltage stabilizing circuit is connected with the controller module, still is connected with the battery power on the power charging unit, and the battery power still is connected with voltage stabilizing circuit, turns into the mode of electric energy power supply through gathering solar energy, maintains the electric power demand of monitoring, accords with sustainable development's environmental protection theory when saving the monitoring cost.
(8) The cast iron sleeve is made of nodular cast iron, the outer surface of the cast iron sleeve is coated with the nano antirust coating, the cast iron sleeve made of the nodular cast iron is high in strength, toughness and plasticity and has certain wear resistance, the excellent mechanical performance of the cast iron sleeve can meet the complex underground stress environment, and the nano antirust coating plays a role in protecting the cast iron sleeve and avoids corrosion and corrosion caused by long-term contact with underground water.
(9) The number of the sampling holes is not less than 10, and theoretically, the more the number of the sampling holes is, the greater the yield of the monitoring well system is, and the more the cost is saved.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic structural diagram of a section of groundwater under monitoring according to the present invention;
FIG. 3 is a schematic structural diagram of a sampling module portion in a docking state according to the present invention;
FIG. 4 is a schematic diagram of the main modules of the present invention;
FIG. 5 is a schematic diagram of the main well construction process of the present invention.
The numbering in the figures illustrates:
the system comprises a cast iron sleeve, a general control room, a monitoring car, a vertical guide rail, a guide sliding block, a sampling module, a sampling tube 61, an electromagnetic valve 62, a fixed butt flange 63, a laser transmitter 7, a laser receiver 8, a movable butt flange 9, a connecting pipe 10, a filter screen 11, a throw-in level gauge 12, an electric push rod 13, an insulating positioning rod 14, a movable conducting strip 15, a fixed conducting strip 16, a water-swelling sealing ring 17, a cloud server 18, a sub-controller module 19, a main controller module 20, a power supply module 21, a wireless transmission module 22, a traction module 23, a water quality analysis module 24 and a power water pump 25.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, which are merely for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like, should be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected between two elements.
Example 1:
referring to fig. 1, a soil groundwater layering monitoring well system comprises a cast iron sleeve 1, wherein the cast iron sleeve 1 is made of nodular cast iron, the outer surface of the cast iron sleeve 1 is coated with a nano antirust coating, the cast iron sleeve 1 made of nodular cast iron has high strength, high toughness and plasticity, and certain wear resistance, and excellent mechanical properties capable of meeting complex underground stress environment, the nano antirust coating plays a role in protecting the cast iron sleeve 1 from corrosion and corrosion caused by long-term contact with underground water, a master control room 2 is arranged at the upper end of the cast iron sleeve 1, a master controller module 20 and a power module 21 are arranged in the master control room 2, the master controller module 20 is connected with the power module 21, the master controller module 20 is connected with a wireless transmission module 22, the wireless transmission module 22 is a GPRS communication module, the wireless transmission module 22 is connected with a cloud server 18, the monitoring data of the underground water level can be transmitted remotely, the unified management is convenient, the backup and the sharing of the data can be realized, a monitoring car 3 is arranged in a cast iron sleeve 1, the side walls of two ends of the monitoring car 3 are fixedly connected with guide sliders 5, the inner end of the monitoring car 3 is fixedly connected with a pair of vertical guide rails 4 matched with the guide sliders 5, the guide sliders 5 and the vertical guide rails 4 are in sliding connection, the guide sliders 5 and the vertical guide rails 4 are matched to play a role in guiding the monitoring car 3, a traction module 23 is also arranged in a master control room 2, the traction module 23 is connected with a main controller module 20, the traction module 23 comprises a traction machine, the traction machine is fixedly connected with the upper end of the monitoring car 3 through a steel rope, the monitoring car 3 is driven to move up and down, a plurality of sampling holes are drilled on the cast iron sleeve 1, and the sampling holes are designed for corresponding underground water layer sections, including quantity and distribution height.
Referring to fig. 2, a sampling module 6 is installed in the sampling hole, the sampling module 6 includes a sampling tube 61 for introducing groundwater, a solenoid valve 62 is installed on the sampling tube 61 for controlling the on/off of the sampling tube 61, a fixed docking flange 63 is fixedly connected to one end of the sampling tube 61 away from the sampling hole, a filter screen 11 is fixedly connected to one end of the sampling tube 61 away from the fixed docking flange 63, a drop-in level gauge 12 is installed in the sampling tube 61, the drop-in level gauge 12 is located between the filter screen 11 and the solenoid valve 62, the drop-in level gauge 12 is also connected to a conducting wire on a fixed conducting strip 16, the filter screen 11 plays a role in filtering silt and large-particle foreign matters in groundwater, so as to prevent sampling failure caused by blockage after entering the sampling tube 61, the drop-in level gauge 12 plays a role in measuring the groundwater level of a corresponding section, an auxiliary controller module 19 and a water quality analysis module 24 are installed in the monitoring car 3, the water quality analysis module 24 is connected with the sub-controller module 19, the sub-controller module 19 is connected with the main controller module 20 through a traveling cable, the main controller module 20 and the sub-controller module 19 both adopt low-power-consumption processors MSP430, the water quality analysis module 24 is connected with the power water pump 25, the water inlet end of the power water pump 25 is connected with the connecting pipe 10 and used for connecting groundwater in the sampling pipe 61 and leading the groundwater to the water quality analysis module 24, one end, far away from the power water pump 25, of the connecting pipe 10 is fixedly connected with a movable butt flange 9, the movable butt flange 9 is matched with a fixed butt flange 63, the movable butt flange 9 is used for butt-joint with the fixed butt flange 63 to start groundwater monitoring of a corresponding layer section, and a starting mechanism is installed in the movable butt flange 9.
Referring to fig. 3, the starting mechanism includes four electric push rods 13 and insulating positioning rods 14, four starting slots distributed in an annular array are cut at one end of the movable docking flange 9 close to the fixed docking flange 63, the electric push rods 13 are installed in the starting slots, the output end of the electric push rods 13 is fixedly connected with the insulating positioning rods 14, the end of the insulating positioning rods 14 far away from the electric push rods 13 is fixedly connected with movable conducting strips 15, the end of the fixed docking flange 63 close to the movable docking flange 9 is cut with four positioning slots matched with the insulating positioning rods 14, fixed conducting strips 16 are fixedly connected to the bottom wall in the positioning slots, circuit communication can be realized after the movable conducting strips 15 and the fixed conducting strips 16 are in physical contact, not only power can be provided, but also can be used as signals for starting groundwater monitoring, one end of the movable conducting strips 15 far away from the fixed conducting strips 16 is connected with the sub-controller module 19 through wires, the end of the fixed conducting strip 16, far away from the movable conducting strip 15, is also connected with the electromagnetic valve 62 through a conducting wire, and the docking mode of arrival is adopted, so that the docking accuracy of the sampling tube 61 and the connecting pipe 10 can be improved, the water leakage caused by the deflection due to overlarge water pressure is not easy to occur during sampling, the safety of sampling monitoring is improved, the electromagnetic valve 62 can be opened only after power supply is realized, the stability of the on-off of the sampling tube 61 can be improved, the wiring and power-on problems of the electromagnetic valve 62 can be avoided, the installation and control are convenient, the end, close to the movable docking flange 9, of the fixed docking flange 63 is fixedly connected with the matched water-swelling sealing ring 17, the surface of the water-swelling sealing ring 17 is coated with an anti-aging layer, the water-swelling sealing ring 17 is used for improving the sealing performance when the fixed docking flange 63 is docked with the movable docking flange 9, and water is not easy to leak from the docking gap, the ageing resistant layer plays the effect that water-swelling sealing washer 17 isolation air was met in the protection, prolongs its life, avoids leading to sealing performance to descend because of ageing.
Referring to fig. 2, monitoring car 3 keeps away from connecting pipe 10 one end and installs laser emitter 7, a plurality of laser receiver 8 of fixedly connected with on the lateral wall of cast iron sleeve pipe 1 inner, and laser receiver 8 keeps unanimous with the thief hole in quantity and height, can fix a position corresponding thief hole rapidly through laser emitter 7 and laser receiver 8's cooperation, accuracy when improving the quick butt joint of sample.
The power module 21 comprises a solar cell panel, a power charging unit and a voltage stabilizing circuit which are sequentially connected, the voltage stabilizing circuit is connected with the controller module, a battery power supply is further connected to the power charging unit and is further connected with the voltage stabilizing circuit, the power supply is converted into an electric energy power supply mode by collecting solar energy, the monitored power demand is maintained, and the environmental protection concept of sustainable development is met while the monitoring cost is saved.
The number of the sampling holes is not less than 10, and theoretically, the more the number of the sampling holes is, the greater the yield of the monitoring well system is, and the more the cost is saved.
A well construction method of a soil underground water layered monitoring well system comprises the following steps:
s1, core drilling and geophysical logging: determining a scale of a hydrographic geophysical logging result curve according to the complexity of lithology and the depth of a drilled hole, wherein the well depth is less than or equal to 300m and is preferably 1:100 or 1: 200; if the well depth is larger than 300m, 1:500 is preferably adopted, and a target interval is determined;
s2, designing a layered monitoring well system: designing a layered monitoring well system according to the target layer section, and completing field assembly and debugging, including waterproof testing, circuit testing and the like;
s3, drilling a monitoring borehole: drilling and reaming by using a drilling machine, and after drilling is finished, putting a cast iron casing 1 into the monitoring borehole so as to protect the borehole wall and avoid collapse of the monitoring borehole;
wherein, the steps S2 and S3 can be carried out simultaneously, thus saving the well construction time.
S4, installing a layered monitoring well system: after installing master control room 2 on subaerial, hang the steel cable and be connected with monitoring car 3, will monitor car 3 and install to vertical guide rail 4 through a pair of direction slider 5 on, carry out the first time monitoring after the inspection is errorless and try on the operation.
During the monitoring, the technical staff can be used for accomplishing periodic groundwater circulation monitoring by writing in the program into the main controller module 20, namely every interval, the main controller module 20 controls the traction module 23 to drive the monitoring car 3 to move up and down, and the monitoring is accomplished by butting with the sampling module 6 of each interval groundwater sampling hole, and the groundwater monitoring of all intervals or the groundwater monitoring of any interval can also be accomplished by issuing a monitoring instruction remotely, and the concrete monitoring steps are as follows: the traction module 23 drives the monitoring car 3 to reach a designated interval, after calibration is completed through the laser emitter 7 and the corresponding laser receiver 8, a monitoring program is started, the sub-controller module 19 controls the starting mechanism on the movable butting flange 9 to start, the four electric push rods 13 start to extend to push the insulating positioning rods 14 to be inserted into corresponding positioning grooves on the fixed butting flange 63, physical contact between the movable conducting strips 15 and the fixed conducting strips 16 is realized, circuit communication is realized, meanwhile, signals for starting monitoring are taken, the electromagnetic valve 62 opens the sampling pipe 61 to be communicated with the connecting pipe 10, underground water in the interval is pumped into the water quality analysis module 24 under the action of the power water pump 25, meanwhile, the input type liquid level meter 12 carries out underground water level measurement on the interval, after the completion, water level data and water quality analysis data are sent to the main controller module 20, and are sent to the cloud server 18 through the wireless transmission module 22, and underground water monitoring data acquisition is realized.
It is worth noting that, after carrying out sample analysis to the groundwater in each interval, both can remain and reserve to collect and preserve as the technical staff as the sample data, also can install the filter module in monitoring car 3 and filter back and wash connecting pipe 10, can reduce the pollution interference degree between the groundwater in different intervals, improve water quality analysis's accuracy, perhaps install water-cooling circulative cooling module, the water after will taking a sample is used for monitoring the cooling in the car 3, the setting is selected by the technical staff by oneself as the optional item in specific design, no longer describe here.
The invention can change the traditional layered monitoring mode, not only realizes the conversion from mixed-layer monitoring to layered monitoring of a single-layer monitoring well and a plurality of layers of exploration holes, but also solves the well building difficulty of the traditional nested monitoring well when dealing with the underground water level of a plurality of layers, abandons the traditional mixed water and adopts an isolation form in the underground water monitoring process by imitating an elevator shaft, realizes the monitoring of the underground water of the plurality of layers by the point-to-point arrival monitoring mode, is theoretically not influenced by the number of the layers, adopts the operation of sampling after the arrival of the station and the docking, has high monitoring stability and is not easy to make mistakes, realizes the all-weather automatic monitoring of the underground water level of each layer by only one pipe, has the functions of remote control and data transmission, realizes unmanned automatic monitoring, and has the advantages of small well building difficulty, low cost, small floor area and long service life.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by the equivalent or modified embodiments and the modified concepts of the present invention.
Claims (8)
1. The utility model provides a soil groundwater layering monitoring well system, includes cast iron sleeve pipe (1), its characterized in that: the monitoring device is characterized in that a master control room (2) is installed at the upper end of the cast iron sleeve (1), a master controller module (20) and a power module (21) are installed in the master control room (2), the master controller module (20) is connected with the power module (21), a monitoring car (3) is arranged in the cast iron sleeve (1), guide sliders (5) are fixedly connected to the side walls of the two ends of the monitoring car (3), a pair of vertical guide rails (4) matched with the guide sliders (5) are fixedly connected to the inner end of the monitoring car (3), the guide sliders (5) are slidably connected with the vertical guide rails (4), a traction module (23) is further installed in the master control room (2), the traction module (23) is connected with the master controller module (20), the traction module (23) comprises a traction machine, and the traction machine is fixedly connected with the upper end of the monitoring car (3) through a steel rope, the cast iron casing pipe (1) is provided with a plurality of sampling holes, sampling modules (6) are installed in the sampling holes, each sampling module (6) comprises a sampling pipe (61), an electromagnetic valve (62) is installed on each sampling pipe (61), one end of each sampling hole is far away from each sampling pipe (61) and is fixedly connected with a fixed butt flange (63), an auxiliary controller module (19) and a water quality analysis module (24) are installed in a monitoring car (3), the water quality analysis module (24) is connected with the auxiliary controller module (19), the auxiliary controller module (19) is connected with a main controller module (20) through a traveling cable, the water quality analysis module (24) is connected with a power water pump (25), the water inlet end of the power water pump (25) is connected with a connecting pipe (10), one end of each connecting pipe (10) far away from the power water pump (25) is fixedly connected with a movable butt flange (9), the movable butt flange (9) is matched with the fixed butt flange (63), and a starting mechanism is installed in the movable butt flange (9);
actuating mechanism includes four electric putter (13) and insulating locating lever (14), it has four annular array distribution's start-up groove to remove mounting flange (9) near fixed mounting flange (63) one end, and electric putter (13) install at start-up inslot, electric putter's (13) output and insulating locating lever (14) fixed connection, electric putter (13) one end fixedly connected with removal conducting strip (15) are kept away from in insulating locating lever (14), fixed mounting flange (63) are near removing mounting flange (9) one end and are dug four and insulating locating lever (14) assorted constant head tank, fixedly connected with fixed conducting strip (16) on the diapire in the constant head tank, it passes through the wire and is connected with sub-controller module (19) to remove fixed conducting strip (15) and keep away from fixed conducting strip (16) one end, fixed conducting strip (16) are kept away from removing conducting strip (15) one end and are passed through wire and solenoid valve (62) even to be connected Connecting;
fixed flange (63) are close to and move flange (9) one end fixedly connected with assorted chance water inflation sealing washer (17), meet water inflation sealing washer (17) surface coating and have the ageing resistance layer.
2. The soil groundwater stratification monitoring well system of claim 1, wherein: fixed flange (63) one end fixedly connected with filter screen (11) are kept away from to sampling tube (61), install input level gauge (12) in sampling tube (61), and input level gauge (12) are located between filter screen (11) and solenoid valve (62), input level gauge (12) are connected with the wire on fixed conducting strip (16) equally.
3. The soil groundwater stratification monitoring well system of claim 1, wherein: monitoring car (3) keep away from connecting pipe (10) one end and install laser emitter (7), a plurality of laser receiver (8) of fixedly connected with on the lateral wall of cast iron sleeve pipe (1) inner, and laser receiver (8) keep unanimous with the thief hole in quantity and height.
4. The soil groundwater stratification monitoring well system of claim 1, wherein: the main controller module (20) is connected with a wireless transmission module (22), and the wireless transmission module (22) is connected with a cloud server (18).
5. The soil groundwater stratification monitoring well system of claim 1, wherein: the power supply module (21) comprises a solar cell panel, a power supply charging unit and a voltage stabilizing circuit which are sequentially connected, the voltage stabilizing circuit is connected with the controller module, the power supply charging unit is further connected with a battery power supply, and the battery power supply is further connected with the voltage stabilizing circuit.
6. The soil groundwater stratification monitoring well system of claim 1, wherein: the cast iron sleeve (1) is made of nodular cast iron, and the outer surface of the cast iron sleeve (1) is coated with a nano antirust coating.
7. The soil groundwater stratification monitoring well system according to claim 1, wherein: the number of the sampling holes is not less than 10.
8. The method for constructing a soil groundwater layered monitoring well system according to any of claims 1-7, wherein: the method comprises the following steps:
s1, core drilling and geophysical logging: determining a scale of a hydrographic geophysical logging result curve according to the complexity of lithology and the depth of a drilled hole, wherein the well depth is less than or equal to 300m and is preferably 1:100 or 1: 200; if the well depth is larger than 300m, 1:500 is preferably adopted, and a target interval is determined;
s2, designing a layered monitoring well system: designing a layered monitoring well system according to the target layer section, and completing field assembly and debugging, including waterproof testing and circuit testing;
s3, drilling a monitoring borehole: drilling and reaming by using a drilling machine, and after drilling is finished, putting a cast iron casing (1) into the monitoring well hole so as to protect the well wall and avoid collapse of the monitoring well hole;
s4, installing a layered monitoring well system: after installing master control room (2) subaerial, hang the steel cable and be connected with monitoring car (3), install monitoring car (3) to vertical guide rail (4) through a pair of direction slider (5), carry out the monitoring test run for the first time after the inspection is errorless.
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| CN111411901A (en) * | 2020-04-28 | 2020-07-14 | 北京市地质工程勘察院 | Small-caliber shallow groundwater nested monitoring well and well completion method thereof |
| CN112255046B (en) * | 2020-11-11 | 2023-02-03 | 西安石油大学 | Petroleum sampling device suitable for petroleum geological exploration |
| CN114441726B (en) * | 2022-01-25 | 2022-08-12 | 生态环境部土壤与农业农村生态环境监管技术中心 | Real-time continuous monitoring system for soil and underground water in industrial park |
| CN115015513B (en) * | 2022-07-01 | 2023-08-01 | 宁夏回族自治区国土资源调查监测院(宁夏回族自治区地质灾害应急中心、自治区矿产资源储量评审中心) | Underground water quality layering monitoring device |
| CN116641698B (en) * | 2023-05-10 | 2023-10-20 | 中国地质科学院岩溶地质研究所 | Energy-saving karst groundwater level on-line monitoring device |
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