JP2005009983A - Method and system for processing ground information and earth resource system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ground information processing method which accurately and speedily computes ground information to be used for designing an earth resource system. <P>SOLUTION: A surface wave exploration means 4 is used to nondestructively detect the condition of ground 3 to be explored. A data analysis means 5 computes the S-wave velocity structure of the ground 3 on the basis of detection data detected by the surface wave exploration means 4. A soil phase distribution of the ground is specified through the use of a soil phase determination standard table previously set on the correspondence between S-wave velocities and soil phases on the basis of the computed S-wave velocity structure. An N value conversion expression or a N value conversion table previously set on the correspondence between S-wave velocities and N values is used to specify an N value distribution of the ground. On the basis of the soil phase distribution and the N value distribution specified on the basis of a caloric value conversion table previously set on the relation between soil phases and caloric values and the relation between N values and caloric values, a unit caloric value of absorption and radiation in a unit thickness of the ground 3 is estimated as a parameter. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ground information processing method, a ground information processing system, and an earth resource system.
[0002]
[Prior art]
2. Description of the Related Art A heat pump system is known as one of earth resource systems that are heat exchange systems that perform cooling and heating using geothermal heat, which is one of the earth resources, as a heat source. In this system, a heat exchanger is installed in a well provided in the ground, a heat pump and a liquid medium reservoir are arranged on the ground, and these are connected by a pipe so that the liquid medium is connected to the ground and the ground. Heat exchange is performed by circulating between them. Usually, in order to design a heat exchange system, in addition to calculating the air conditioning, hot water supply, and heating load, the soil soil phase, underground temperature, specific heat, thermal conductivity, groundwater level, and groundwater flow velocity are determined, and the heat absorption and release of the ground is determined. The amount of heat is judged and the capacity of the heat pump is selected.
As described above, the design of the heat exchange system is performed in consideration of various factors, and among them, the heat absorption / heat radiation amount is important in the system design. For this reason, conventionally, the ground to be surveyed is directly drilled, the soil phase distribution and N value distribution of the ground are grasped, and parameters necessary for system design are estimated.
[0003]
On the other hand, in the ground exploration method, there is a non-destructive investigation method that knows the ground structure from the vibration transmission state in addition to a destructive investigation method such as a boring investigation. As a non-destructive investigation method, a surface wave exploration method and a microtremor exploration method are known.
In the surface wave exploration method, a survey line in which a plurality of vibration sensors serving as receiving means are arranged in a straight line at equal intervals is provided, and vibration is generated at an excitation point at an offset distance from the end of the survey line. The total wave (surface wave, direct wave, refracted wave, reflected wave, etc.) is received by the vibration sensor on the line and stored in the storage means, and the surface wave is identified from the stored wave record and is The underground structure is estimated by analyzing the S wave velocity structure in
[0004]
The microtremor exploration method is a means of observing natural tremors on the ground, and is arranged at the center of the circle and a plurality of microtremor observers (seismometers and storage devices) arranged at equal intervals on the circumference drawn on the ground surface. It has a microtremor observation means using a circular array consisting of a single microtremor observer (a seismometer and a storage device). In addition to a single circle, there may be a plurality of concentric double, triple, and quadruple multiple circles, and surface waves are extracted from the microtremor records observed by the microtremor observer that makes up the circular array. The frequency / phase velocity relationship is calculated from the extracted surface waves, and the underground S-wave velocity structure is analyzed based on this.
[0005]
[Problems to be solved by the invention]
Boring survey, which is one of the ground exploration methods, is limited to the extraction of local underground structures in the survey target area. In many cases, rough ground prediction is required because the survey requires a lot of time, money and labor. For this reason, in the excavation stage of the well where the heat exchanger used for the earth resource system, which is a heat exchange system, is excavated, the heat absorption / radiation amount per unit thickness of the ground assumed by the design (unit absorption / radiation amount) and the system There is a large error with the heat absorption / heat dissipation per unit thickness (unit heat absorption / heat dissipation) obtained from the actual ground after the operation of the facility, and it is often necessary to modify the drilling depth, number of wells, and calorie calculation. As a result, the construction period will be extended.
[0006]
Using surface wave exploration or microtremor exploration as a ground exploration method can reduce the time, cost, and labor required for the investigation, but from the viewpoint of speeding up the analysis of the detection data obtained from the investigation target, A specialist engineer with skilled skills in measurement, observation, and analysis must be assigned. In addition, there are individual differences among specialists, and even in the same survey location, the quality of the detection data and the analysis results vary if the specialists are different. Furthermore, if there are a large number of survey locations, there will be a shortage of specialist engineers, and variations will occur in the analysis accuracy and analysis will take time.
[0007]
An object of the present invention is to provide a ground information processing method and a ground information processing system capable of accurately and quickly analyzing ground information used for designing an earth resource system.
It is an object of the present invention to provide an earth resource system corresponding to various individual grounds, minimizing design and actual errors, minimizing design changes, shortening the construction period, and reducing labor costs. Objective.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the ground information processing method according to the present invention uses surface wave exploration means as means for nondestructively detecting the ground condition to be investigated. Then, based on the detection data detected by these surface wave exploration means, the S wave velocity structure of the ground is analyzed, and on the basis of the analyzed S wave velocity structure, an earth resource system that uses the underground heat of the ground as a heat source. It is characterized by deriving parameters necessary for the design. This kind of ground information processing method can detect ground conditions nondestructively, so that the time, cost, and labor required for the survey are reduced compared to the method using the boring survey, and accurate ground information is estimated. Can do.
[0009]
The ground information processing method according to the present invention stores detection data detected by the surface wave exploration means, and processes the stored detection data via an exploration communication unit connected to the surface wave exploration means. -It is characterized by being transmitted to a data analysis means for performing analysis. In such a ground information processing method, data detected by the surface wave exploration means is collectively processed by the data analysis means, so that the data processing can be made more efficient.
[0010]
In the ground information processing method according to the present invention, in the data analysis means, the detection data transmitted from the exploration communication unit is stored, and the detection data transmitted by the exploration communication unit is subject to noise, frequency and phase velocity. The quality of detected data is evaluated based on a data quality evaluation standard (consisting of a standard waveform and a standard F-K spectrum) set in advance with respect to In the ground information processing method according to the present invention, the data analysis means has a content that prompts a re-investigation of the ground when the detected data is poor quality, and a content that prompts the end of the ground survey when the detected data is good quality. Each of them is transmitted as instruction data to the surface wave exploration means via the analysis communication unit.
[0011]
In such a ground information processing method, the instruction data corresponding to the processing result in the data analysis means is fed back to the surface wave search means in the field. If the detected data is of poor quality, the surface wave exploration means is sent to the surface wave exploration means, so that it can be re-investigated as necessary and the accuracy of the ground investigation is improved. In addition, when the detected data is of good quality, the contents for prompting the surface wave exploration means to end the ground investigation are transmitted, so that unnecessary investigation is not required and the investigation time can be shortened.
[0012]
In the ground information processing method according to the present invention, the data analysis means calculates a frequency / phase velocity relationship curve based on the detection data transmitted by the exploration communication unit, analyzes the S wave velocity structure based on the calculation result, Based on the S wave velocity structure, the soil phase distribution of the ground is specified by using a preset soil phase judgment standard table regarding the correspondence between the S wave velocity and the soil phase, and the S wave velocity and the N value are determined. It is characterized in that the N value distribution of the ground is specified by using a conversion means such as an N value conversion formula or an N value conversion table set in advance for correspondence.
[0013]
That is, the data analysis means Fourier-transforms the detection data, calculates the surface wave phase velocity for each frequency, specifies the frequency / phase velocity relationship (expressed by a curve called a dispersion curve), and based on this, the S wave Analyze the velocity structure. The analysis method of the S wave velocity structure is a method usually called inverse analysis, and the dispersion curve (observation dispersion curve) obtained from the detected data and the S wave velocity structure (initial structure model) that was first trial-analyzed based on the dispersion curve. The dispersion curve (theoretical dispersion curve) theoretically calculated from the above is compared, the S wave velocity structure is corrected until the two curves agree well, and this is sequentially repeated.
[0014]
In addition, there is a case where a method of analyzing the S wave velocity structure in a simplified manner is used, which is that the surface wave velocity is approximately 90% of the S wave velocity, and that the velocity of the surface wave of a certain frequency is the wavelength (depending on the frequency). This is a method of analyzing the S wave velocity structure by utilizing the surface wave propagation characteristic of showing a load average S wave velocity up to a depth corresponding to approximately 1/2 of (different). As a result, the S-wave velocity structure can be analyzed using accurate detection data, and the soil phase distribution and the N-value distribution can be specified with high accuracy.
[0015]
In the ground information processing method according to the present invention, the data analysis means uses the preset calorie conversion table for the relationship between the soil phase and the calorific value and the relationship between the N value and the calorific value, based on the soil phase distribution and the N value distribution. It is characterized by estimating the unit heat absorption / release heat per unit thickness of the ground. For this reason, based on the soil phase distribution and N value distribution specified with high accuracy, the unit heat absorption / release amount of the ground can be estimated with high accuracy from the calorie conversion table.
[0016]
In the earth resource system for exchanging heat using the underground heat according to the present invention, the system design is performed using the unit absorption / heat dissipation with high accuracy obtained by the ground information processing method. Since there is less error between the unit heat absorption and heat dissipation and the actual ground unit heat absorption and heat dissipation obtained after the system facility is operated, design changes are extremely small.
Become.
[0017]
In order to achieve the above object and method, the present invention analyzes the S wave velocity structure of the ground based on the surface wave exploration means for nondestructively investigating the condition of the ground and the detection data obtained by the surface wave exploration means. In addition, a ground information processing system is proposed that has data analysis means for deriving parameters necessary for the design of an earth resource system that uses the ground heat of the ground as a heat source based on the analyzed S wave velocity structure.
[0018]
In the ground information processing system according to the present invention, the data analysis means includes an S wave analysis section for analyzing the S wave velocity structure from detection data obtained by the surface wave exploration means, and an S wave velocity analyzed by the S wave analysis section. Unit phase release based on the structure and the soil phase / N-value determination unit that identifies the soil phase distribution and N-value distribution, and the soil phase distribution and N-value distribution specified by the soil phase / N-value determination unit A calorific value analysis unit for estimating the amount of heat, a data quality evaluation unit for evaluating the quality of detection data obtained by the surface wave exploration means, a detection data obtained by the surface wave exploration means, an analysis result in the S wave analysis unit, An analysis storage unit that stores at least one of the identification result in the soil phase / N value determination unit, the estimation result in the calorific value analysis unit, and the quality evaluation result in the data quality evaluation unit is provided.
[0019]
In the ground information processing system according to the present invention, the surface wave exploration means includes vibration means for vibrating the ground, vibration receiving means for receiving vibration generated on the ground by the vibration means, and detection data received by the vibration receiving means. And a search communication unit for transmitting detection data stored in the search storage unit to the data analysis unit and receiving instruction data for prompting a re-survey and an end of the survey transmitted from the data analysis unit. ing.
[0020]
In the ground information processing system according to the present invention, the data analysis means receives the detection data transmitted from the surface wave exploration means via the exploration communication section and transmits the instruction data to the surface wave exploration means via the exploration communication section. And an analysis communication unit for transmitting.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. The ground information processing system 1 shown in FIG. 1 uses surface wave exploration means 4 as means for nondestructively detecting the internal state of the ground 3 to be investigated. The ground information processing system 1 analyzes the S wave velocity structure of the ground 3 based on the surface wave exploration means 4 and the detection data detected by the surface wave exploration means 4, and based on this S wave velocity structure, And a data analysis means 5 for deriving parameters necessary for designing an earth resource system, which will be described later, using geothermal heat as a heat source.
[0022]
The surface wave exploration means 4 stores detection data and has a display function, and transmits the detection data stored in the exploration storage section 6 to the data analysis means 5 and from the data analysis means 5. And an exploration communication unit 7 for receiving instruction data for prompting re-survey and completion of the survey. The exploration communication unit 7 and the data analysis means 5 are connected to the Internet 8 which is one form of the network, and can communicate with each other.
[0023]
The surface wave exploration means 4 includes a hammer 11 as a vibration means, an iron plate 12 that is disposed on the ground 3 and is struck by the hammer 11 to form a vibration point, and a vibration reception means as a plurality of vibration reception means constituting a reception point. Sensors 13 are provided. The vibration receiving sensor 13 is arranged in a straight line with a predetermined interval (for example, 0.5 to 2.0 m), and is connected to the search storage unit 6 by a cable 6a. The iron plate 12 where the portion struck by the hammer 11 serves as the excitation point is arranged on the same straight line as the row of the vibration receiving sensors 13, and an offset distance L is provided between the receiving sensor 13a and the closest receiving sensor 13a. The offset distance L is usually about 2 to 30 m. In this embodiment, the iron plate 12 is used as the member to be hit with the hammer 11, but a hard resin or the like may be used.
[0024]
The surface wave exploration means 4 vibrates the ground 3 by striking the iron plate 12 with the hammer 11, and receives all the generated elastic waves (surface waves, direct waves, refracted waves, reflected waves) by the receiving sensor 13. And stored in the search storage unit 6. The exploration storage unit 6 stores wave data, which is detection data received by the vibration receiving sensor 13, and displays the stored waveform data on a display device (not shown) as waveform data displayed based on the arrival time. Depending on the purpose, the wave propagation characteristics reflecting the underground structure below the receiving point are displayed, and the received detection data is stored.
[0025]
The installation interval of each vibration sensor 13 and the distance of the offset L are set as appropriate in order to obtain optimum wave data (detection data) corresponding to the characteristics of the ground 3 and are not limited to specific values. . FIG. 2 shows a waveform record when the detection data from the vibration receiving sensor 13 set on the ground 3 is stored.
[0026]
The data analysis means 5 is a known computer including an arithmetic circuit, a memory, and the like, and includes a monitor as a display means, a keyboard and a mouse as operation means, although not shown. As shown in FIG. 1, the data analysis means 5 includes an analysis communication section 9 that can transmit and receive detection data to and from the exploration communication section 7 of the surface wave exploration means 4 and an analysis that stores various information on the data analysis means 5 side. The S-wave analysis unit 20 that analyzes the S-wave velocity structure from the detection data obtained by the storage unit 10, the surface wave exploration means 4, and the soil of the ground based on the S-wave velocity structure analyzed by the S-wave analysis unit 20 The amount of heat for estimating a unit heat absorption / release amount as a parameter from the soil phase / N-value determination unit 21 that specifies the phase distribution and the N-value distribution, and the soil phase distribution and the N-value distribution specified by the soil phase / N-value determination unit 21 An analysis unit 22 and a data quality evaluation unit 23 for evaluating the quality of detection data obtained by the surface wave exploration means 4 are provided. The data analysis means 5 is configured to be able to access the Internet 8 via the analysis communication unit 9 and transmit / receive data to / from the exploration communication unit 7.
[0027]
In this embodiment, the analysis storage unit 10 includes detection data transmitted from the exploration communication unit 7 of the surface wave exploration means 4 and received by the analysis communication unit 9, analysis results in the S wave analysis unit 20, soil phase / N value determination The specific result in the unit 21, the estimation result in the calorific value analysis unit 22, and the quality evaluation result in the data quality evaluation unit 23 are stored.
[0028]
The data analysis means 5 has a function of transmitting the detection data quality evaluation result made by the data quality evaluation unit 23 based on the data quality evaluation standard as instruction data to the exploration communication unit 7 via the analysis communication unit 9. Yes. When the data quality evaluation unit 23 determines that the detected data is poor in quality, the data analysis means 5 uses the content that prompts the survey target ground to be re-investigated as instruction data, and the quality of the detected data is determined to be good. In this case, it has a function of transmitting, as instruction data, contents for prompting the end of the survey of the ground 3 to be surveyed to the surface wave exploration means 4 from the analysis communication unit 9 via the exploration communication unit 7.
[0029]
The quality of the detected data refers to the quality of data obtained by whether or not the vibration receiving sensors 13 are arranged. Waveform data obtained by detection differs depending on whether the direction or position of each vibration receiving sensor 13 is good or bad. In addition, if there is a situation such as civil engineering / building work or heavy vehicle traffic that causes noise around the ground 3 to be surveyed, the waveform data obtained by the detection becomes defective. You have to change and review again. For this reason, in this embodiment, as a data quality evaluation standard, the pattern of the waveform data when the receiving sensors 13 are poorly arranged and when they are good are categorized to form a standard waveform and a standard FK spectrum in the data analysis means 5. It is stored in the storage means 24 provided and is made into a database.
[0030]
The storage unit 24 stores an initial structure model corresponding to the observed dispersion curve in a database. This initial structure model is configured to be automatically selected and set by specifying the observed dispersion curve. The S-wave analysis unit 20 is set with a predetermined reference value that targets the degree of coincidence between the observed dispersion curve and the theoretical separation curve, and repeats the analysis trial of the S-wave velocity structure until this reference value is reached. . This reference value is normally a value close to 1.000, but is determined according to the ground 3 to be investigated (for example, 0.935, 0.950, 0.980) and is set by inputting from a keyboard (not shown). To do.
[0031]
The soil phase / N-value determining unit 21 is for specifying the soil phase from the soil phase determination standard table shown in FIG. 4 which is a database for specifying the soil phase from the S wave velocity. The soil phase determination standard table is stored in the storage means 24 as a database. In general, the soil phase of the ground 3 is very various, and the S wave velocities are all different corresponding to each soil phase. For example, whether it is fine sand, coarse sand, silt, sand-mixed silt, clay or sand-mixed clay in alluvial ages (geological age name) Or the same or the same gravel, whether the gravel is large or small, the gravel is large or small, the gravel is hard or soft, all have different S-wave velocities, and the geological age of the same soil is alluvial The S-wave velocity is different even in the older or lower age. In addition, when the ground is rock, the S wave velocity will differ depending on whether it is a strongly weathered or weakly weathered rock. Also, the correspondence is different depending on the regional characteristics, and the correspondence between the S wave velocity and the soil phase differs depending on whether it is a soft ground area, an alluvial sedimentary area, a river terrace or a volcanic foothill. The soil phase determination standard table shown in FIG. 4 is a concrete and comprehensive summary of S wave velocities corresponding to such various soil phases and rock phases.
[0032]
The soil phase / N value determination unit 21 specifies the N value by using a known N value conversion formula for specifying the N value from the S wave velocity or a conversion means such as the N value conversion table shown in FIG. is there. As a known N value conversion formula, for example, (S wave velocity / 91) ^2.97 The following formula is mentioned. However, this formula is an average statistical formula calculated by ignoring the diversity and regional characteristics of the soil phase, and is created by omitting the work that has to be corrected appropriately for different soil phases. , It has a limit in terms of accuracy when applied to any ground. The N value conversion formula or N value conversion table is based on a database constructed from a lot of surface wave exploration data in various soil phases in various regions. It has characteristics that can be specified with high accuracy and is stored in the storage means 24.
The calorific value analysis unit 22 estimates the unit heat absorption / radiation amount per unit thickness of the ground derived from the N value distribution and the soil phase distribution from the heat quantity conversion table shown in FIG. The heat conversion table is stored in the storage means 24 as a database.
[0033]
The flow of processing contents in the data analysis means 5 will be described with reference to the flowcharts shown in FIGS. FIG. 7 and FIG. 8 are a series of flows, but for convenience, they are divided at the portion of the terminal (1). The processing from step A2 to step A8 in FIG. 7 shows the flow in the S wave analysis unit 20. In step A1, detection data (waveform data) is input, and in steps A2 and A3, an observed dispersion curve indicated by a dot-like line in FIG.
In step A4, an initial structure model is set with reference to the database stored in the storage means 24. In Step A5, a theoretical separation curve indicated by a solid line in FIG. 2 is calculated from the set initial structure model based on the surface wave theory, and the process proceeds to Step A6. In step A6, it is determined by comparison with the target reference value whether or not the calculated theoretical separation curve matches the observed dispersion curve calculated in step A3. Due to the nature of the observed value and the theoretical value, the two curves rarely match from the beginning. If the two curves do not match, proceed to Step A7 and modify the structural model so that the theoretical separation curve approaches the observed dispersion curve. And return to step A5 to calculate the theoretical separation curve again.
Steps A5 to A7 are repeated until the theoretical separation curve and the observed dispersion curve match. In step A6, when the degree of coincidence between the theoretical separation curve and the observed dispersion curve reaches the target reference value, the process proceeds to step A8 to analyze the S wave velocity structure. The relationship between the S wave velocity structure and the dispersion curve is shown in FIG. In FIG. 3, the vertical axis represents the depth, and the horizontal axis represents the surface wave phase velocity and S wave velocity.
[0034]
Next, when the S wave velocity structure is analyzed in step A8, the process proceeds to step A9 in FIG. 8, and the analyzed S wave velocity structure is captured by storing it in the analysis storage unit 10, and is converted into a database in step A10. The soil phase distribution standard of the soil phase 3 shown in FIG. 4 corresponding to the S wave velocity structure and the S wave velocity structure stored in the analysis storage unit 10 are identified, and the identified result is temporarily stored in the analysis storage unit. 10 to remember.
In step A <b> 11, an N value distribution is calculated using an S wave velocity structure and an N value conversion formula, and the calculated value is stored in the analysis storage unit 10. The N value distribution may be selected and specified from the N value conversion table shown in FIG. 5 instead of the N value conversion formula. These steps A9 to A11 are processed by the soil phase / N-value determining unit 21.
In step A12, the calorific value analysis unit 23 refers to the calorific value conversion table shown in FIG. 6 stored in correspondence with the N value distribution and the soil phase distribution stored in the storage unit 24, and the unit thickness of the ground 3 is referred to. A unit heat absorption / release amount per unit (a parameter used for designing the earth resource system) is estimated, and the estimated value is stored in the analysis storage unit 10, and then the series of processes is terminated.
[0035]
Thus, the earth resource which calculates the S wave velocity structure of the ground 3 based on the waveform data detected by the comfortable surface wave exploration means 4 and uses the underground heat of the ground 3 as a heat source based on the calculated S wave velocity structure. The unit heat absorption / radiation amount per unit thickness of the ground 3 which is a parameter required for system design can be derived (estimated) by the data processing means 5, and from the collection of detection data to the estimation of the unit heat absorption / radiation amount All processes can be performed non-destructively. Therefore, the time, cost and labor required for the survey can be reduced as compared with a destructive ground survey method such as a boring survey, and the ground information indispensable for the design of the earth resource system can be accurately estimated.
[0036]
Since the waveform data detected by the surface wave exploration means 4 and stored in the exploration storage section 6 is transmitted to the data processing means 5 via the exploration communication section 7 connected to the exploration storage section 6, the surface wave exploration means 4 Waveform data processing can be processed at once by the data processing means 5, and the data processing time can be shortened, and the variation in the ground information analysis results and the number of analysis personnel can be reduced.
[0037]
The process in the data quality evaluation part 23 is demonstrated using the flowchart shown in FIG. In step B1, detection data is input from the analysis storage unit 10, and the waveform and the F-K spectrum calculated by the S wave analysis unit 20 in step B2 are displayed on a display (not shown). In step B3, the quality evaluation of the detected data is performed by comparing the data quality evaluation criteria stored in the database with the above-described waveform and F-K spectrum. In this embodiment, whether the data is good or bad is determined by comparison with a standard waveform and a standard FK spectrum stored in a database.
In step B3, when the waveform and the F-K spectrum are above the standard (data is good), the waveform and the F-K spectrum are stored in the analysis storage unit 10 to finish this process, and the waveform and the F-K spectrum are below the standard. In the case of (data defect), the process proceeds to step B4. In step B4, the contents to be re-investigated by shifting the direction and position of each vibration sensor 13 or the measurement time zone are transmitted to the exploration communication unit 7 as instruction data.
[0038]
As described above, in the data analysis means 5, when the detected waveform data transmitted from the surface wave exploration means 4 side is poor in quality, the data quality evaluation unit 23 re-investigates the ground 3 to be investigated by the surface wave exploration means 4. Since the contents to be urged are transmitted to the exploration communication unit 6 as instruction data, it is possible to conduct a quick re-investigation, improve the survey accuracy in the ground 3 to be surveyed, and increase the accuracy of the waveform data that is the basic data for calculating the parameters More accurate parameters can be estimated.
[0039]
In the present embodiment, the initial structure model corresponding to the data quality evaluation standard, the soil phase determination standard table, the N value conversion formula, the N value conversion table, the heat amount conversion table, and the observed dispersion curve is stored in the common storage unit 24 in advance. However, the storage means is connected to the S wave analysis unit 20, the soil phase / N value determination unit 21, the heat quantity analysis unit 22, and the data quality evaluation unit 23, and information used in each unit is stored in each storage unit. Each may be stored in a database.
[0040]
In the present embodiment, the vibration receiving sensors 13 are arranged on the same straight line, but are not limited to such an arrangement, and may be arranged shifted to the left and right with respect to the same straight line. Although the hammer 11 is exemplified as the vibration means, fireworks or a known vibrator may be used as the vibration means. When using a vibration exciter, one that can control the vibration frequency is preferable. Further, as the exploration method, a so-called S-wave refraction exploration method by hitting a plate may be used.
[0041]
In this embodiment, the surface wave exploration means 4 is used non-destructively as a means for detecting the internal state of the ground 3. However, the surface wave exploration means 4 is not limited to this and is included in the surface wave exploration method in a broad sense. The microtremor exploration method may be used. Even in this case, the S-wave velocity structure can be analyzed by the analysis method unique to the microtremor exploration method. Therefore, the S-wave velocity structure per unit thickness of the ground 3 is analyzed using the analyzed S-wave velocity structure and FIGS. The unit heat absorption / dissipation amount can be derived by the data processing means 5.
[0042]
10 and 11 show a schematic configuration of a heat pump system 100 that is an example of an earth resource system that is a heat exchange system using underground heat. FIG. 10 shows the state during heating, and FIG. 11 shows the state during cooling.
[0043]
This heat pump system 100 is connected to a well 101 provided in the ground 3 (underground) of the installation site, an underground heat exchanger 102 disposed in the well 101, and an underground heat exchanger 102. The heat pump 103 disposed on the surface side, the heat exchanger 104 on the condensing side of the heat pump 103, and the underground heat exchanger 102 are connected between the heat pump 103 and the mixed solution of the water and the antifreeze liquid. Brine circuit 107 having a pump 106 that circulates between the heat exchanger 104 and the underground heat exchanger 102, a cold / hot water tank 108 as a storage means for storing the mixed solution, and a heat exchanger 105 on the evaporation side of the heat pump 103. And a circuit 110 having a pump 109 connected between the heat exchanger 105 and the cold / hot water tank 108 and circulating the mixed solution of the cold / hot water tank 108 between the heat exchanger 105 and the cold / hot water tank 108. It is provided. In the heat pump 103, the heat exchanger 104 and the heat exchanger 105 are provided on a refrigerant circuit 115 including expansion valves 111 and 112, a compressor 113, and a four-way valve 114.
In order to design such a heat pump system 100, calculation of air conditioning / hot water supply / heating load, selection of the capacity of the heat pump, calculation of heat absorption / radiation of the ground, and the like are usually performed. In the heat pump system 100 used in this embodiment, since the unit heat absorption / release amount with high accuracy obtained by the ground information processing system 1 is used in these designs, the unit heat absorption / release amount (heat absorption / heat release amount) calculated by the design and The error with the unit heat absorption / radiation amount (heat absorption / radiation amount) obtained from the actual ground 3 after system facility operation becomes small, and the design change becomes extremely small. For this reason, it is possible to shorten the construction period without delaying the design change of the system, and it is possible to design the system corresponding to the ground while reducing the labor cost. Since system design changes are extremely small, inexpensive system design and construction can be performed.
[0044]
In the heat pump system 100 having such a configuration, the liquid medium absorbs the heat of the ground by the underground heat exchanger 102 in the well 101 during heating, and the liquid heat is absorbed by the underground heat exchanger 102 during cooling. The heat of the medium is dissipated into the ground. For this reason, since heat absorption and heat dissipation are performed in the ground, the heat island phenomenon can be remarkably reduced, the power used for the heat pump system 100 can be reduced, and the carbon dioxide can be reduced. In addition, since the underground temperature is substantially constant throughout the year regardless of the outside air temperature, the above effect can be stably exhibited.
[0045]
Although the heat pump system 100 in this embodiment has illustrated the well 101 and the underground heat exchanger 102 as one each, it is not limited to these numbers, and the high-accuracy obtained by the ground information processing system 1 The depth and number of the wells 101 may be designed so that heat can be efficiently collected and a desired output can be appropriately obtained based on the heat absorption / release data.
[0046]
【The invention's effect】
According to the present invention, if the surface wave exploration means is used as a means for non-destructively detecting the ground condition to be investigated, the ground condition can be investigated nondestructively, and the detection data detected by the surface wave exploration means The S-wave velocity structure of the ground can be calculated based on the data, and the necessary parameters used in the design of the earth resource system using the ground underground heat as a heat source can be derived by the data analysis means based on the calculated S-wave velocity structure. . Therefore, the time, cost, and labor required for the survey are reduced as compared with the boring survey, and the ground information used for designing the earth resource system that is a heat exchange system can be estimated with high accuracy.
[0047]
According to the present invention, the detection data detected by the surface wave exploration means is transmitted to the data analysis means that processes and analyzes the detection data via the exploration communication unit connected to the surface wave exploration means. The detection data can be collectively processed by the data analysis means, and the efficiency of data processing can be improved.
[0048]
According to the present invention, since the detection data transmitted from the exploration communication unit is subjected to quality evaluation of detection data based on a preset data quality evaluation standard regarding the amount of noise and the relationship between frequency and phase velocity. , Can improve the quality of detection data.
[0049]
According to the present invention, when the detected data is poor in quality, the content prompting the ground reconnaissance is detected via the analysis communication unit, and when the detected data is good quality, the content prompting the end of the ground survey is transmitted via the analysis communication unit. Since the data is transmitted to the exploration means, the instruction data corresponding to the processing result in the data analysis means is fed back to the surface wave exploration means in the field. If the detected data is of poor quality, a message prompting the surface wave exploration means to re-investigate the ground will be sent, so that it can be re-investigated as necessary, increasing the accuracy of the ground investigation and detecting. When the data is of good quality, a message prompting the surface wave exploration means to end the ground survey is transmitted, so that unnecessary surveys can be omitted and the survey time can be shortened.
[0050]
According to the present invention, the frequency / phase velocity relationship curve is calculated based on the detection data, the S wave velocity structure is analyzed based on the calculation result, and the S wave velocity and the earth phase are calculated based on the S wave velocity structure. The soil phase distribution of the ground is specified using the soil phase judgment standard table set in advance for the correspondence, and the N value conversion formula or the N value conversion table preset for the correspondence between the S wave velocity and the N value is used. Since the N value distribution of the ground is specified by using this, the S wave velocity structure can be analyzed using accurate detection data, and the soil phase distribution and the N value distribution can be specified with high accuracy. In addition, by using the specified soil phase distribution and N value distribution, the unit per unit thickness of the ground serving as a parameter from the calorie conversion table set in advance regarding the relationship between the soil phase and the calorie and the relationship between the N value and the calorie The amount of heat absorbed and released can be estimated with high accuracy.
[0051]
In the earth resource system for exchanging heat using the underground heat according to the present invention, the system design is performed using the unit absorption / heat dissipation with high accuracy obtained by the ground information processing method. Since the error between the unit heat absorption and heat dissipation and the actual ground unit heat absorption and heat obtained after the system facility operation is reduced, the design change is extremely small, the system is adapted to the ground while shortening the construction period and reducing labor costs. Design can be done.
[Brief description of the drawings]
FIG. 1 is a diagram showing a schematic configuration of a ground information processing system using surface wave exploration means.
FIG. 2 is a diagram illustrating an example of waveform data displayed in a search storage unit.
FIG. 3 is a diagram showing a relationship between a dispersion curve and an S wave velocity structure.
FIG. 4 is a diagram showing an example of a soil phase determination standard table for specifying a soil phase from S wave velocities.
FIG. 5 is a diagram showing an example of an N value conversion table for specifying an N value from an S wave velocity.
FIG. 6 is a diagram showing an example of a heat amount conversion table for deriving a unit heat absorption / release heat amount per unit thickness of the ground derived from the N value distribution and the soil phase distribution.
FIG. 7 is a flowchart showing a flow of data processing by a parameter processing unit of the data processing means.
FIG. 8 is a flowchart showing the flow of data processing following terminal (1) in FIG. 7;
FIG. 9 is a flowchart showing a flow of data processing by a quality judgment processing unit of the data processing means.
FIG. 10 is a diagram showing a configuration of a heat pump system that is one form of an earth resource system and a state during heat generation.
11 is a diagram illustrating a state of the heat pump system illustrated in FIG. 10 during cooling.
[Explanation of symbols]
1 Ground information processing system
3 ground
4 Surface wave exploration means
5 Data analysis means
6 Exploration memory
7 Exploration and Communication Department
9 Analysis Communication Department
10 Analysis storage unit
11 Excitation means
13 Vibration receiving means
20 S wave analysis part
21 soil phase / N-value judgment part
22 Calorie analysis part
23 Data Quality Evaluation Department
100 Earth resource system

Claims (14)

A surface wave exploration means is used to nondestructively investigate the condition of the ground to be investigated, and the S wave velocity structure of the ground is analyzed based on the detection data detected by the surface wave exploration means. A ground information processing method, wherein parameters necessary for designing an earth resource system using ground heat of the ground as a heat source are derived based on a wave velocity structure. The ground information processing method according to claim 1,
The surface wave exploration means stores the detection data and the stored detection data to a data analysis means that processes and analyzes the detection data via an exploration communication unit connected to the surface wave exploration means. A ground information processing method characterized by transmitting. The ground information processing method according to claim 2,
The data analysis means stores the detection data transmitted from the search communication unit, and is set in advance with respect to the detection data transmitted by the search communication unit with respect to the amount of noise and the relationship between frequency and phase velocity. A ground information processing method, wherein quality evaluation of the detected data is performed based on a data quality evaluation standard. The ground information processing method according to claim 3,
The data analysis means analyzes the content that prompts the re-investigation of the ground when the detected data is poor in quality as the instruction data, and the content that prompts the completion of the ground survey when the detected data is of good quality, respectively. A ground information processing method comprising transmitting to the surface wave exploration means via a communication unit. In the ground information processing method according to claim 2, 3 or 4,
The data analysis means calculates a frequency / phase velocity relationship curve based on the detection data transmitted by the exploration communication unit, and analyzes the S wave velocity structure based on the calculation result. . The ground information processing method according to claim 5,
The data analysis means specifies the soil phase distribution of the ground using a previously determined soil phase determination standard table regarding the correspondence between the S wave velocity and the soil phase based on the S wave velocity structure, and A ground information processing method, wherein an N value distribution of the ground is specified using an N value conversion formula or an N value conversion table set in advance with respect to a correspondence between an S wave velocity and the N value. The ground information processing method according to claim 6,
The data analysis means uses a calorific value conversion table set in advance with respect to the relationship between the soil phase and the calorie and the relationship between the N value and the calorie, and the unit of the ground serving as the parameter based on the soil phase distribution and the N value distribution A ground information processing method characterized by estimating a unit heat absorption / dissipation amount per thickness. An earth resource system for exchanging heat using underground heat,
The earth resource system characterized by performing system design using the unit absorption-and-release heat amount obtained by the ground information processing method of Claim 7. Surface wave exploration means to non-destructively investigate ground conditions,
An earth resource system that analyzes the S-wave velocity structure of the ground based on the detection data obtained by the surface wave exploration means and uses the underground heat of the ground as a heat source based on the analyzed S-wave velocity structure. A ground information processing system comprising data analysis means for deriving parameters necessary for design. The ground information processing system according to claim 9,
The data analyzing means analyzes the S wave velocity structure from the detection data obtained by the surface wave exploration means, and the S wave velocity structure analyzed by the S wave analysis section. The unit phase heat absorption / dissipation amount as the parameter is estimated from the soil phase / N value determination unit for specifying the soil phase distribution and the N value distribution, and the soil phase distribution and the N value distribution specified by the soil phase / N value determination unit. A ground information processing system having a calorific value analysis unit. The ground information processing system according to any one of claims 9 to 10,
The ground information processing system characterized in that the data analysis means has a data quality evaluation section for evaluating the quality of detection data obtained by the surface wave exploration means. The ground information processing system according to claim 11,
The data analysis means includes detection data obtained by the surface wave exploration means, analysis results at the S wave analysis section, identification results at the soil phase / N value determination section, estimation results at the heat quantity analysis section, and A ground information processing system comprising an analysis storage unit for storing at least one of quality evaluation results in the data quality evaluation unit. The ground information processing system according to any one of claims 9 to 12,
The surface wave exploration means includes a vibration means for vibrating the ground, a vibration receiving means for receiving vibration generated on the ground by the vibration means, and a search storage unit for storing detection data received by the vibration receiving means, A search communication unit that transmits the detection data stored in the search storage unit to the data analysis unit and receives instruction data for prompting the end of the re-survey and the survey transmitted from the data analysis unit, A ground information processing system. The ground information processing system according to claim 13,
The data analysis means receives the detection data transmitted from the surface wave exploration means via the exploration communication section, and transmits the instruction data to the surface wave exploration means via the exploration communication section. A ground information processing system comprising a communication unit.

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