CN109882158B - Drilling water pumping level testing method and drilling water level testing device - Google Patents
Drilling water pumping level testing method and drilling water level testing device Download PDFInfo
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- CN109882158B CN109882158B CN201910214225.XA CN201910214225A CN109882158B CN 109882158 B CN109882158 B CN 109882158B CN 201910214225 A CN201910214225 A CN 201910214225A CN 109882158 B CN109882158 B CN 109882158B
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Abstract
The invention provides a method and a device for testing the water level of water pumped in a drill hole, wherein the method comprises the steps of obtaining the initial water level in the drill hole; starting a water pump to perform a single-hole water pumping test to obtain water level recovery observation data; fitting a water level recovery observation curve according to the water level recovery observation data; according to the water level recovery observation curve, acquiring the water level of the hole wall; and calculating the elevation difference between the initial water level and the water level of the hole wall to obtain the water level depth reduction value of the drill hole. The fitting of the water level recovery observation curve is realized, the water level corresponding to the coordinate point with the maximum curvature of the water level recovery observation curve is determined as the water level of the hole wall, the error of the water level is reduced, the accurate water level depth reduction is obtained, accurate parameters are provided for water quantity calculation and evaluation in the exploration process, and damage caused by errors of hydrogeological parameters is avoided.
Description
Technical Field
The invention relates to the technical field of drilling, in particular to a drilling water pumping level testing method and a drilling water level testing device.
Background
At present, in the exploration process of mineral resources, a drilling pumping and precipitation test is indispensable work, and the calculation of pit water inflow and the calculation of underground water resource amount are daily work of geological exploration, wherein the drilling water level depth reduction value is an essential parameter in the calculation of the pit water inflow and the underground water resource amount.
At present, the drilling water level drawdown value is mainly obtained by measuring the initial water level in the drilling hole and the lowest point of the water level in the drilling hole, taking the lowest point of the measured water level in the drilling hole as the funnel center water level, and then calculating the difference between the initial water level and the funnel center water level.
The water level depth-reducing value is defined as the difference between the initial water level of a pumping structure and the central water level of a funnel, wherein the central water level of the funnel is the lowest point of the water level of a hole wall, the lowest point of the measured water level in the hole is greatly different from the central water level of the funnel on the definition, the lowest point of the water level in the hole is directly used as the central water level of the funnel, so that the error of the calculated water level depth-reducing value of the drilling hole is large, the error of the hydrogeological parameters obtained through the water level depth-reducing value of the drilling hole is large, and the water inflow amount calculated according to the water level depth-reducing value of the drilling hole and other hydrogeological parameters reversely solved by the water level depth-reducing value of the drilling hole is far smaller than the actual water inflow amount of the shaft or the mine pit, so that the shaft or the mine pit is easily submerged and dead disasters are easily caused.
Disclosure of Invention
In view of this, an object of the embodiments of the present invention is to provide a method and an apparatus for testing a water level of a borehole, which are used to fit a water level recovery observation curve, determine a water level corresponding to a coordinate point with the maximum curvature of the water level recovery observation curve as a funnel central water level, and reduce an error of the defined funnel central water level, so as to obtain an accurate water level depth reduction, provide accurate parameters for calculation and evaluation of water inflow of a mine pit, and avoid damage caused by errors in hydrogeological parameters.
In a first aspect, an embodiment of the present invention provides a method for testing a water pumping level of a borehole, where the method includes:
acquiring an initial water level in a drill hole;
starting a water pump to perform a single-hole water pumping test to obtain water level recovery observation data;
fitting a water level recovery observation curve according to the water level recovery observation data;
acquiring the water level of the hole wall according to the water level recovery observation curve;
and calculating the elevation difference between the initial water level and the hole wall water level to obtain the drilling water level depth reduction value.
With reference to the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where the starting of the water pump to perform a single-hole pumping test to obtain observed data of water level restoration includes:
starting a water pump to perform a water pumping test;
after the water pumping operation is carried out for a preset time period, the water pump is closed, and water pressure recovery data in the hole after the water pumping is stopped is obtained through the water pressure sensor;
and converting the water pressure recovery data in the hole into water level recovery observation data.
With reference to the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where fitting a water level restoration observation curve according to the water level restoration observation data includes:
drawing a water level recovery curve according to the water level recovery observation data;
and fitting a water level recovery observation curve according to the water level recovery curve.
With reference to the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, where the obtaining, according to the water recovery level observation curve, a water level of a pore wall includes:
establishing a water level recovery curve observation equation according to the water level observation curve;
calculating the curvature corresponding to each coordinate point on the water level recovery observation curve according to the water level recovery curve observation equation;
determining a coordinate point with the maximum curvature from the curvatures corresponding to the coordinate points;
and determining the water level corresponding to the determined coordinate point as the water level of the hole wall.
With reference to the first possible implementation manner of the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, where after the water pumping operation is performed for a preset time period, the water pump is turned off, and the water pressure sensor is used to acquire the recovery water pressure data in the hole after the water pumping operation is stopped, including:
after the water pumping operation is carried out for a preset time period, the water pump is closed, and water pressure data in the hole are continuously acquired through the water pressure sensor;
monitoring continuously acquired water pressure data in the holes in real time, and stopping acquiring the water pressure data in the holes when the continuously acquired water pressure data in the holes meet preset stable conditions;
and determining the water pressure data in the hole obtained in the process from the water pump turning off to the water pressure data in the hole stopping obtaining as the water pressure data recovered in the hole after the water pumping is stopped.
In a second aspect, an embodiment of the present invention provides a drilling water level testing apparatus, where the apparatus includes a water pressure sensor, a secondary meter, a data processor, and a data cable;
the diving end of the data cable is connected with the water pressure sensor, and the ground end of the data cable is connected with the secondary instrument;
the water pressure sensor is used for collecting initial water level and water pressure data in the hole and transmitting the initial water level and the water pressure data in the hole to the secondary instrument through the data cable;
the secondary instrument sends a monitoring command to the water pressure sensor through the data cable; receiving, storing and displaying the initial water level and the water pressure data in the hole transmitted by the water pressure sensor;
the data processor is used for converting the water pressure data in the hole into water level recovery observation data; drawing a water level recovery curve according to the water level recovery observation data; fitting a water level recovery observation curve according to the water level recovery curve; acquiring the water level of the hole wall according to the water level recovery observation curve; and calculating the elevation difference between the initial water level and the water level of the hole wall to obtain the water level depth reduction value of the drill hole.
With reference to the second aspect, an embodiment of the present invention provides a first possible implementation manner of the second aspect, where the apparatus further includes a water pump and a metal rod;
the water suction pipe of the water pump is bound with the metal rod;
the data cable is fixed on the metal rod, and the water pressure sensor is fixedly installed at the diving end of the metal rod.
With reference to the second aspect, an embodiment of the present invention provides a second possible implementation manner of the second aspect, where the secondary meter includes a receiving element, a storage element, a control element, a signal key, and a display screen;
the receiving element is respectively connected with the storage element, the display screen and the water pressure sensor, receives the water pressure data in the hole transmitted by the water pressure sensor, and transmits the water pressure data in the hole to the storage element and the display screen; the storage element is used for storing water pressure data in the hole; the display screen is used for displaying water pressure data in the holes;
the control element is respectively connected with the storage element, the display screen, the signal key and the water pressure sensor, receives the trigger signal transmitted by the signal key, sends a monitoring command to the water pressure sensor according to the trigger signal, or calls the water pressure data in the hole from the storage element according to the trigger signal, and transmits the water pressure data in the hole to the display screen.
With reference to the second possible implementation manner of the second aspect, an embodiment of the present invention provides a third possible implementation manner of the second aspect, where the signal key includes a clock proof key, a storage key, a display key, a sampling frequency setting key, a water level conversion key, and a data derivation key.
With reference to the second possible implementation manner of the second aspect, an embodiment of the present invention provides a fourth possible implementation manner of the second aspect, where the secondary meter further includes a USB interface and a network interface;
the USB interface is used for exporting the collected initial water level in the drill hole and the collected water level recovery data in the drill hole;
and the network interface is used for connecting the secondary instrument and the data processor through a wired cable.
In the method and the device provided by the embodiment of the invention, the method for testing the water level of the drilled water comprises the steps of obtaining the initial water level in a drilled hole; starting a water pump to perform a single-hole water pumping test to obtain water level recovery observation data; fitting a water level restoration observation curve according to the water level restoration observation data; according to the water level recovery observation curve, acquiring the water level of the hole wall; calculating the elevation difference between the initial water level and the hole wall water level to obtain a drilling water level depth reduction value; the drilling water level testing device comprises a water pressure sensor, a secondary instrument, a data processor and a data cable; the diving end of the data cable is connected with the water pressure sensor, and the ground end of the data cable is connected with the secondary instrument; the water pressure sensor is used for collecting initial water level and water pressure data in the hole and transmitting the initial water level and the water pressure data in the hole to the secondary instrument through a data cable; the secondary instrument sends a monitoring command to the water pressure sensor through a data cable; receiving, storing and displaying initial water level and water pressure data in the hole transmitted by the water pressure sensor; the data processor is used for converting the water pressure data in the hole into water level recovery observation data; drawing a water level recovery curve according to the water level recovery observation data; fitting a water level recovery observation curve according to the water level recovery curve; acquiring the water level of the hole wall according to the water level recovery observation curve; and calculating the elevation difference between the initial water level and the water level of the hole wall to obtain the water level depth reduction value of the drill hole. The method has the advantages that the fitting of the water level recovery observation curve is realized, the water level corresponding to the coordinate point with the maximum curvature of the water level recovery observation curve is determined as the water level of the hole wall, the error of the central water level of the funnel with the definition is reduced, the accurate water level depth reduction can be obtained, accurate parameters are provided for the calculation and evaluation of the water inflow amount of the mine pit, and the damage caused by the error of hydrogeological parameters is avoided.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1A shows a flow chart of a method for testing a borehole pumping water level according to embodiment 1 of the present invention;
FIG. 1B is a flowchart illustrating the process of acquiring observed water level restoration data according to embodiment 1 of the present invention;
fig. 1C shows a flowchart for obtaining a water level of a hole wall according to embodiment 1 of the present invention;
FIG. 1D shows a water level restoration curve provided in embodiment 1 of the present invention, and a water level restoration observation curve;
fig. 2A shows a schematic structural diagram of a drilling water level testing device provided in embodiment 2 of the present invention;
fig. 2B shows a structure diagram of the drilling water level testing apparatus provided in embodiment 2 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In consideration of the fact that in the prior art, due to the fact that the lowest point of the measured water level in the hole is greatly different from the defined funnel center water level, the lowest point of the water level in the hole is directly used as the funnel center water level, the error of the calculated drilling water level depth value is large, the error of the hydrogeological parameter obtained through the drilling water level depth value is large, the water inflow amount calculated according to the drilling water level depth value is far smaller than the actual water inflow amount of a shaft and a pit, and therefore the shaft or the pit is easily flooded and dies in the exploration process. Based on the method, the invention provides a drilling pumping water level testing method and a drilling water level testing device, which are used for fitting a water level recovery observation curve, determining the water level corresponding to the coordinate point with the maximum curvature of the water level recovery observation curve as the central water level of a funnel, and reducing the error of the defined central water level of the funnel, so that the accurate water level depth can be obtained, accurate parameters are provided for calculating and evaluating the water inflow and the water amount of a mine pit in an exploration process, and the damage caused by the error of hydrogeological parameters is avoided. The following is a description by way of example.
Example 1
Referring to fig. 1A, an embodiment of the present invention provides a method for testing a water pumping level in a borehole. The method includes the following steps S101-S105.
Step S101: an initial water level within the borehole is obtained.
Step S102: and starting a water pump to perform a single-hole water pumping test to obtain water level recovery observation data.
Step S103: and fitting a water level recovery observation curve according to the water level observation data.
Step S104: and (4) according to the water level recovery observation curve, obtaining the water level of the hole wall.
Step S105: and calculating the elevation difference between the initial water level and the water level of the hole wall to obtain the water level depth reduction value of the drill hole.
In the embodiment of the invention, before the single-hole water pumping test is carried out on the drilled hole, the initial water level in the drilled hole needs to be acquired. The initial water level in the drill hole is obtained, the water pressure data of the water level in the drill hole is collected through the water pressure sensor, the collected water pressure data are transmitted to the secondary instrument through the water pressure sensor, then the water pressure data are converted into corresponding water level values through the secondary instrument or other water level converters, and the water level values are used as the initial water level in the drill hole.
In the step S102, during the single-hole pumping test process according to the industry standards such as the exploration standard and the single-hole pumping test standard, the water level observation data is obtained, which may be specifically obtained through the following steps S1021 to S1023, as shown in fig. 1B.
Step S1021: and starting the water pump to perform water pumping test.
When the water pump draws water, the water pressure sensor collects water pressure data of water pumping in the hole in real time, the water pressure data of water pumping in the hole are transmitted to the secondary instrument on the ground through the data cable, and the secondary instrument displays and stores the water pressure data of water pumping in the hole.
Step S1022: and after the water pumping operation in a preset time period is carried out, the water pump is closed, and the water pressure sensor is used for acquiring the water pressure data recovered in the hole after the water pumping is stopped.
In the above step S1022, the water pressure sensor is used to obtain the water pressure recovery data in the hole after the water pumping is stopped, and the data can be obtained through the following steps S10221 to S10223.
Step S10221: after the water pumping operation in the preset time period is carried out, the water pump is closed, and the water pressure data in the hole is continuously acquired through the water pressure sensor.
In the preset time period, the high-frequency observation of the water level of the drilling hole is longer than the shortest time required in the standard of the single-hole water pumping test, and can be 1 hour, and after the water pumping operation for the preset time is carried out, the sampling frequency can be reduced.
When the water pump is turned off, the secondary instrument sends a monitoring command to the water pressure sensor, and the water pressure sensor starts to collect water pressure data in the hole according to sampling frequency included by the monitoring command after receiving the monitoring command. Wherein the sampling frequency is not lower than 5 times/second.
Step S10222: and monitoring the continuously acquired water pressure data in the hole in real time, and stopping acquiring the water pressure data in the hole when the monitored continuously acquired water pressure data in the hole meets the preset stable condition.
When the water pressure sensor collects the water pressure data in the hole according to the monitoring command, the secondary instrument can receive the water pressure data in the hole transmitted by the water pressure sensor and count the received water pressure data in the hole, when the difference between the last two water pressure data in the counted water pressure data in the hole is smaller than or equal to a preset value, the water pressure data in the hole meets a preset stable condition, at the moment, the secondary instrument sends a monitoring stopping command to the water pressure sensor, and the water pressure sensor stops collecting the water pressure data in the hole; when the difference between the last two continuous water pressure data in the counted water pressure data in the holes is larger than the preset value, the water pressure data in the holes do not meet the preset stable condition, at the moment, the water pressure sensor continues to collect the water pressure data in the holes, the secondary instrument calculates the difference between the last two water pressure data in the holes in real time until the difference between the last two water pressure data in the holes is smaller than the preset value, the secondary instrument sends a monitoring stopping command to the water pressure sensor, and the water pressure sensor stops collecting the water pressure data in the holes.
Step S10223: and determining the water pressure data in the hole acquired from the process of closing the water pump to the process of stopping acquiring the water pressure data in the hole as the water pressure data recovered in the hole after water pumping is stopped.
After the water pressure restoration data in the hole is acquired through the step S1022, the water level restoration observation data may be acquired through the following step S1023.
Step S1023: and converting the water pressure data recovered in the hole into water level recovery observation data.
After the water level restoration observation data is acquired through the step S102, the water level restoration observation curve may be acquired through the above step S103.
In the above step S103, the water level restoration observation curve is fitted according to the water level restoration observation data, which can be accomplished by the following procedure.
Firstly, drawing a water level recovery curve according to water level recovery observation data; and then fitting a water level recovery observation curve according to the water level recovery curve.
Because some data with large errors exist in the obtained water level recovery observation data, the drawn water level recovery curve is not smooth, at this time, a corresponding water level recovery curve equation is also required to be established according to the water level recovery curve, the established water level recovery curve equation is optimized, so that a smooth water level recovery curve is drawn according to the optimized water level recovery curve equation, and the smooth water level recovery curve is determined as a water level recovery observation curve.
In the embodiment of the present invention, the plotted water level recovery curve and the water level recovery observation curve obtained by fitting are schematically shown in fig. 1D. In fig. 1D, the water level restoration curve corresponds to an equation of h1= V (t), and the water level restoration observation curve corresponds to an equation of h2= V (t), where V is the water pressure and t is the restoration time.
In the above step S104, the hole wall water level is obtained according to the water level recovery observation curve, which can be obtained through the following steps S1041-S1044, as shown in fig. 1C.
Step S1041: and establishing a water level recovery curve observation equation according to the water level recovery observation curve.
Step S1042: and calculating the curvature corresponding to each coordinate point on the water level recovery observation curve according to the water level recovery curve observation equation.
Step S1043: and determining the coordinate point with the maximum curvature from the curvatures corresponding to the coordinate points.
Step S1044: and determining the water level corresponding to the determined coordinate point as the water level of the hole wall.
In the embodiment of the invention, the water level of the hole wall is obtained according to the water level observation curve, and the coordinate point with the maximum curvature on the water level recovery observation curve can be observed through a visual method, so that the water level corresponding to the determined coordinate point is determined as the water level of the hole wall.
After the hole wall water level is acquired through the above S104, the hole drilling water level lowering value may be obtained through the above S105 step.
In the embodiment of the invention, the water level corresponding to the coordinate point with the maximum curvature on the water level recovery observation curve is determined as the hole wall water level by establishing the water level recovery observation curve, so that the error between the determined hole wall water level and the defined funnel center is very small, the accuracy of the drilling hole water level depression value calculated according to the funnel center water level is very high, the error of hydrogeological parameters calculated according to the drilling hole water level depression value is very small, the pit water inflow or the shaft water inflow calculated according to the drilling hole water level depression value is more reasonable in the exploration process, and the probability of the occurrence of the flooding and death disasters of the shaft or the pit can be reduced.
The method for testing the water level of the drilling pumping provided by the embodiment of the invention comprises the steps of obtaining the initial water level in a drilling hole; starting a water pump to perform a single-hole water pumping test to obtain water level recovery observation data; fitting a water level recovery observation curve according to the water level recovery observation data; according to the water level recovery observation curve, acquiring the water level of the hole wall; and calculating the elevation difference between the initial water level and the hole wall water level to obtain the drilling water level depth reduction value. The water level observation curve is fitted, the water level corresponding to the coordinate point with the maximum curvature of the water level observation curve is determined as the water level of the hole wall, and the error of the water level of the center of the funnel with the definition is reduced, so that the accurate water level depth reduction can be obtained, accurate parameters are provided for water quantity calculation and evaluation in the exploration process, and damage caused by errors of hydrogeological parameters is avoided.
Example 2
Referring to fig. 2A or 2B, an embodiment of the present invention provides a drilling water level testing apparatus, which includes a water pressure sensor 1, a secondary meter 2, a data processor 3 and a data cable 4;
the diving end of the data cable 4 is connected with the water pressure sensor 1, and the ground end of the data cable 4 is connected with the secondary instrument 2;
the water pressure sensor 1 is used for collecting initial water level and water pressure data in the hole and transmitting the initial water level and the water pressure data in the hole to the secondary instrument 2 through a data cable 4;
the secondary instrument 2 sends a monitoring command to the water pressure sensor 1 through the data cable 4; receiving, storing and displaying initial water level and water pressure data in the hole transmitted by the water pressure sensor 1;
the data processor 3 converts the water pressure data in the hole into water level recovery observation data; drawing a water level recovery curve according to the water level recovery observation data; fitting a water level recovery observation curve according to the water level recovery curve; acquiring the water level of the hole wall according to the water level recovery observation curve; and calculating the elevation difference between the initial water level and the hole wall water level to obtain the drilling water level depth reduction value.
In the embodiment of the present invention, the data cable 4 is a waterproof, corrosion-resistant, and interference-resistant low-voltage cable. The surface end of the data cable 4 is exposed at the end above the ground, and the submerged end of the data cable 4 is exposed at the end in the borehole.
When collecting the water pressure data corresponding to the initial water level and the water pressure data in the hole, the water pressure sensor 1 needs to be placed at a preset distance below the water level in the hole of the drilled hole. The water pressure sensor 1 starts to collect the water pressure data in the hole according to the monitoring command sent by the secondary instrument 2, wherein the monitoring command comprises the collection time, the collection frequency and the like.
The secondary meter 2 is a storage display device, and sends a monitoring command or a command for stopping monitoring to the water pressure sensor 1 according to a control command of a user or a test program preset by the user.
The data processor 3 may be a computer, a mobile phone, or a device for performing water pressure data processing. The data processor 3 can be arranged in a remote control center far away from an exploration field, and a user can derive the stored water pressure data corresponding to the initial water level and the water pressure data in the hole from the secondary instrument 2 and transmit the water pressure data corresponding to the initial water level and the water pressure data in the hole to the data processor 3 through a network; the data processor 3 can also be arranged on an exploration site and is connected with the secondary instrument 2 through a communication cable, and the secondary instrument 2 transmits the stored or real-time collected water pressure data corresponding to the initial water level and the water pressure data in the hole to the data processor 3 through the communication cable.
Referring to fig. 2B, the apparatus further comprises a water pump 5 and a metal rod 6;
the water suction pipe of the water pump 5 is bound with the metal rod 6.
The data cable 4 is fixed on the metal rod 6, and the water pressure sensor 1 is fixedly installed at the diving end of the metal rod 6.
In the embodiment of the present invention, the water pump 5 may be a centrifugal water pump 5. The distance between the water pressure sensor 1 and the water inlet of the water suction pipe of the water pump 5 is not less than 10m. Above-mentioned data cable 4 is fixed on metal pole 6, can avoid the haplopore test in-process that draws water, and data cable 4 is by the suction pipe of suction pump 5.
In the embodiment of the present invention, the secondary meter 2 includes a receiving element, a storage element, a control element, a signal key and a display screen;
the receiving element is respectively connected with the storage element, the display screen and the water pressure sensor 1, receives the water pressure data in the hole transmitted by the water pressure sensor 1, and transmits the water pressure data in the hole to the storage element and the display screen; the storage element is used for storing water pressure data in the hole; the display screen is used for displaying water pressure data in the holes;
the control element is connected with storage element, display screen, signal key and water pressure sensor 1 respectively, receives the trigger signal of signal key transmission to send monitoring command to water pressure sensor 1 according to trigger signal, perhaps according to trigger signal, transfer downthehole water pressure data from the storage element, and with downthehole water pressure data transmission to the display screen.
The signal keys comprise a clock proofreading key, a storage key, a display key, a sampling frequency setting key, a water level conversion key and a data derivation key.
The clock calibration key is used to calibrate the time of the water pressure sensor 1, and when the user presses the clock calibration key, the secondary meter 2 may send a clock calibration command to the water pressure sensor 1, so that the water pressure sensor 1 adjusts its clock time to a time that is consistent with the current time of the secondary meter 2. Through clock proofreading, the data stored in the secondary instrument 2 can be ensured to be synchronous with the data collected by the water pressure sensor 1, and the accuracy of the data is improved.
The storage key is used for storing the data transmitted by the water pressure sensor 1, when the user presses the key, the secondary meter 2 starts to store the data transmitted by the water pressure sensor 1, when the key is pressed again, the water pressure sensor 1 stores the data in sections from the time when the key is pressed to the time when the key is pressed again, and the storage of another section of data is restarted. In the embodiment of the present invention, the secondary meter 2 may further store data according to a time node in a program through a preset program.
The display key can display the water pressure data acquired by the water pressure sensor 1 in real time in a water level form, and can also display the water level corresponding to the water pressure data of a certain section stored in the secondary instrument 2.
Above-mentioned sampling frequency sets up the key, can be according to the experimental demand of drawing water, and the user-defined sets up sampling frequency, and after the user set up sampling frequency and pressed this key, secondary instrument 2 sent this sampling frequency to water pressure sensor 1, and water pressure sensor 1 carries out water pressure data acquisition according to this sampling frequency. In the embodiment of the present invention, the secondary meter 2 may further perform water pressure data acquisition according to a preset frequency in a program through a preset program.
The water level conversion key is used for converting the water pressure value into a corresponding water level value. In the embodiment of the present invention, after the user presses the key, the secondary meter 2 may convert the water pressure data transmitted by the water pressure sensor 1 into water level data to be displayed, and the user may set or store the data in the form of water pressure or the data in the form of water level as needed.
The data export key is used for exporting the water pressure data or the water level data stored in the secondary instrument 2.
In the embodiment of the present invention, the secondary meter 2 further includes a power switch key, a test start/stop key, and other test device keys commonly used by the test device.
The secondary instrument 2 further comprises a USB interface and a network interface;
the USB interface is used for exporting the collected initial water level in the drill hole and the collected water level recovery data in the drill hole;
and the network interface is used for connecting the secondary instrument 2 and the data processor 3 through a wired cable.
In the embodiment of the present invention, the network interface may be divided into a wired network interface and a wireless network interface, and the secondary meter 2 may be connected to a local area network or an internet nearby through the network interface, and transmit the stored water pressure data or water level data to the data processor 3 through the local area network or the internet.
In the drilling water level testing device provided by the embodiment of the invention, the device comprises a water pressure sensor, a secondary instrument, a data processor and a data cable; the diving end of the data cable is connected with the water pressure sensor, and the ground end of the data cable is connected with the secondary instrument; the water pressure sensor is used for acquiring initial water level and water pressure data in the hole and transmitting the initial water level and the water pressure data in the hole to the secondary instrument through a data cable; the secondary instrument sends a monitoring command to the water pressure sensor through a data cable; receiving, storing and displaying initial water level and water pressure data in the hole transmitted by the water pressure sensor; the data processor is used for converting the water pressure data in the hole into water level recovery observation data; drawing a water level recovery curve according to the water level recovery observation data; fitting a water level recovery observation curve according to the water level recovery curve; acquiring the water level of the hole wall according to the water level recovery observation curve; and calculating the elevation difference between the initial water level and the hole wall water level to obtain the drilling water level depth reduction value. The method realizes fitting of the water level recovery observation curve, determines the water level corresponding to the coordinate point with the maximum curvature of the water level recovery observation curve as the water level of the hole wall, reduces the error of the defined central water level of the funnel, thereby obtaining the accurate water level depth reduction, providing accurate parameters for water quantity calculation and evaluation in the exploration process, and avoiding the damage caused by errors of hydrogeological parameters.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The method for testing the water pumping level of the drilled hole is characterized by comprising the following steps:
acquiring an initial water level in a drill hole;
starting a water pump to perform a single-hole water pumping test to obtain water level recovery observation data;
fitting a water level restoration observation curve according to the water level restoration observation data;
acquiring the water level of the hole wall according to the water level recovery observation curve;
calculating the elevation difference between the initial water level and the hole wall water level to obtain a drilling water level depth reduction value;
according to the water level resumes observation curve, acquire the pore wall water level, include:
establishing a water level recovery curve observation equation according to the water level recovery observation curve;
calculating the curvature corresponding to each coordinate point on the water level recovery observation curve according to the water level recovery curve observation equation;
determining a coordinate point with the maximum curvature from the curvatures corresponding to the coordinate points;
determining the water level corresponding to the determined coordinate point as the water level of the hole wall;
open the water pump and carry out the haplopore test of drawing water, acquire water level and resume observation data, include:
starting a water pump to perform a water pumping test;
after water pumping operation is carried out for a preset time period, the water pump is closed, and water pressure recovery data in the hole after water pumping is stopped is obtained through the water pressure sensor;
and converting the water pressure recovery data in the hole into water level recovery observation data.
2. The method of claim 1, wherein fitting a water-level restoration observation curve based on the water-level restoration observation data comprises:
drawing a water level recovery curve according to the water level recovery observation data;
and fitting a water level recovery observation curve according to the water level recovery curve.
3. The method of claim 1, wherein the step of turning off the water pump after the water pumping operation is performed for a preset time period, and obtaining the water pressure data recovered in the hole after the water pumping operation is stopped through the water pressure sensor comprises the steps of:
after the water pumping operation is carried out for a preset time period, the water pump is closed, and the water pressure data in the hole is continuously obtained through the water pressure sensor;
monitoring continuously acquired water pressure data in the holes in real time, and stopping acquiring the water pressure data in the holes when the continuously acquired water pressure data in the holes meet preset stable conditions;
and determining the water pressure data in the hole obtained in the process from the water pump turning off to the water pressure data in the hole stopping obtaining as the water pressure data recovered in the hole after the water pumping is stopped.
4. The drilling water level testing device is characterized by comprising a water pressure sensor, a secondary instrument, a data processor and a data cable;
the diving end of the data cable is connected with the water pressure sensor, and the ground end of the data cable is connected with the secondary instrument;
the water pressure sensor is used for collecting initial water level and water pressure data in the hole and transmitting the initial water level and the water pressure data in the hole to the secondary instrument through the data cable;
the secondary instrument sends a monitoring command to the water pressure sensor through the data cable; receiving, storing and displaying the initial water level and the water pressure data in the hole transmitted by the water pressure sensor;
the data processor converts the water pressure data in the hole into water level recovery observation data; drawing a water level recovery curve according to the water level recovery observation data; fitting a water level recovery observation curve according to the water level recovery curve; acquiring the water level of the hole wall according to the water level recovery observation curve; calculating the elevation difference between the initial water level and the hole wall water level to obtain a drilling water level depth reduction value;
the data processor is specifically used for establishing a water level restoration curve observation equation according to the water level restoration observation curve;
calculating the curvature corresponding to each coordinate point on the water level recovery observation curve according to the water level recovery curve observation equation;
determining a coordinate point with the maximum curvature from the curvatures corresponding to the coordinate points;
determining the water level corresponding to the determined coordinate point as the water level of the hole wall;
the data processor is specifically used for starting the water pump to perform a water pumping test;
after the water pumping operation is carried out for a preset time period, the water pump is closed, and water pressure recovery data in the hole after the water pumping is stopped is obtained through the water pressure sensor;
and converting the water pressure recovery data in the hole into water level recovery observation data.
5. The device of claim 4, further comprising a water pump and a metal rod;
the water suction pipe of the water pump is bound with the metal rod;
the data cable is fixed on the metal rod, and the water pressure sensor is fixedly installed at the diving end of the metal rod.
6. The apparatus of claim 4, wherein the secondary meter comprises a receiving element, a storage element, a control element, a signal key, and a display screen;
the receiving element is respectively connected with the storage element, the display screen and the water pressure sensor, receives the water pressure data in the hole transmitted by the water pressure sensor, and transmits the water pressure data in the hole to the storage element and the display screen; the storage element is used for storing water pressure data in the hole; the display screen is used for displaying the water pressure data in the holes;
the control element is respectively connected with the storage element, the display screen, the signal key and the water pressure sensor, receives the trigger signal transmitted by the signal key, and sends a monitoring command to the water pressure sensor according to the trigger signal, or calls the water pressure data in the hole from the storage element according to the trigger signal, and transmits the water pressure data in the hole to the display screen.
7. The apparatus of claim 6, wherein the signal keys comprise a clock proof key, a memory key, a display key, a sampling frequency setting key, a water level scaling key, and a data export key.
8. The apparatus of claim 6, wherein the secondary meter further comprises a USB interface and a network interface;
the USB interface is used for exporting the collected initial water level in the drill hole and the collected water level recovery data in the drill hole;
and the network interface is used for connecting the secondary instrument and the data processor through a wired cable.
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| CN110284876B (en) * | 2019-06-25 | 2023-04-18 | 徐清清 | Method and device for carrying out multiple aquifer water pumping tests in single deep borehole |
| CN111946333B (en) * | 2020-07-02 | 2021-05-18 | 临沂矿业集团菏泽煤电有限公司 | Simple test and solution method for aquifer hydrogeological parameters under curtain grouting condition |
| CN113532579B (en) * | 2021-05-25 | 2024-02-20 | 天地科技股份有限公司 | Water level monitoring method and device for aquifer, electronic equipment and storage medium |
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