Geothermal resource potential evaluation method and device and computer equipment

Abstract

The invention relates to the field of geothermal resource exploration and research, in particular to a geothermal resource potential evaluation method and device and computer equipment. The method comprises the steps of determining geologic features of a second index related to horizon depth or geothermal factors of a potential evaluation horizon and geologic features of a second index related to historical geological activities in the geothermal resource potential evaluation horizon in a target geothermal evaluation area; according to a preset weight of the first index and a fuzzy evaluation result corresponding to the geological feature of a second index corresponding to each first index, determining a first evaluation result of the first index related to the current geothermal geological condition and a second evaluation result of the first index related to the heat effect in the pull-in period; and determining a geothermal resource potential evaluation result according to the first evaluation result and the second evaluation result. The geological conditions for forming the geothermal resources are comprehensively considered in space and time, and effective guidance is provided for development and utilization of the geothermal resources.

Description

Technical Field

[0001] This specification relates to the field of geothermal resource exploration and research, and in particular to a method, device and computer equipment for evaluating geothermal resource potential. Background Art

[0002] Geothermal resources are a sustainable, stable, green and clean energy. In order to determine the potential of regional geothermal resource development, geothermal resource evaluation is one of the important basic research for geothermal resource development.

[0003] At present, the evaluation methods of geothermal resources are divided into two categories: geothermal resource element evaluation and drilling temperature measurement evaluation. Geothermal resource elements include heat source, heat reservoir, cap rock, heat transfer channel and fluid. Different geothermal geological conditions will lead to significant differences in geothermal resource potential. For example, the presence of magma chambers in the crust can greatly increase the geothermal resource potential of the region. Recent thermal events can also affect the formation of geothermal resources today. For example, the residual heat of magma chambers cooled within 5Ma in the crust can contribute to the formation of geothermal resources today.

[0004] The drilling temperature measurement evaluation is to directly evaluate the potential of geothermal resources based on the high and low temperatures in the deep by drilling and measuring the temperature in the hot spring display area. The current geothermal resource evaluation mainly focuses on the geothermal geological elements of the geothermal fields that have been developed or are being developed, and cannot make horizontal comparisons and evaluations of the geothermal resource potential in undeveloped areas. Summary of the invention

[0005] In order to solve the problem that the prior art cannot evaluate the geothermal resource potential in undeveloped areas, the embodiments of this specification provide a geothermal resource potential evaluation method, device and computer equipment.

[0006] The embodiments of the present specification provide a method for evaluating the potential of geothermal resources, the method comprising: determining the geological characteristics of a second indicator related to the layer depth or geothermal factors of the geothermal resource potential evaluation layer in the target geothermal evaluation area, and the geological characteristics of a second indicator related to the historical geological activities of the geothermal resource potential evaluation layer, wherein the resource potential evaluation layer belongs to the first indicator; according to the preset weight of each first indicator and the fuzzy evaluation result corresponding to the geological characteristics of the second indicator related to the layer depth or geothermal factors of the first indicator, determining the first evaluation result related to the current geothermal geological conditions of the first indicator; according to the preset weight of each first indicator and the fuzzy evaluation result corresponding to the geological characteristics of the second indicator related to the historical geological activities of the first indicator, determining the second evaluation result related to the thermal effect of the first indicator in the recent period; according to the first evaluation result and the second evaluation result, determining the geothermal resource potential evaluation result of the target geothermal evaluation area.

[0007] According to one aspect of an embodiment of the present specification, a fuzzy evaluation result corresponding to the geological feature of a second indicator related to the stratum depth or geothermal factor of a first indicator is determined in the following manner: determine whether there is a geothermal factor in the second indicator related to the stratum depth or geothermal factor of each first indicator; if so, determine the first geological feature of the second indicator related to the geothermal factor of each first indicator and the second geological feature of the second indicator related to the stratum depth; determine the fuzzy evaluation result corresponding to the geological feature of the second indicator based on whether the second geological feature falls within a preset numerical range and the first geological feature falls within a preset numerical range.

[0008] According to one aspect of an embodiment of the present specification, the fuzzy evaluation result corresponding to the geological characteristics of the second indicator is determined in the following manner: based on the time distance between the occurrence time of the thermal event of the second indicator and the current time, determining the preset numerical interval within which the time distance falls, wherein the preset numerical interval reflects the influence of geothermal factors generated by historical geological activities on the geothermal resources forming the geothermal resource potential evaluation layer; based on the preset numerical interval, determining the fuzzy evaluation result corresponding to the occurrence time of the thermal event of the second indicator.

[0009] According to one aspect of an embodiment of the present specification, according to the preset weight of each first indicator of the geothermal resource potential evaluation layer and the fuzzy evaluation result corresponding to the geological characteristics of each first indicator, determining the first evaluation result of the geothermal resource potential evaluation layer includes: determining the first evaluation result according to the following formula:

[0010] in, represents the first evaluation result of geothermal resource potential; k i represents the preset weight corresponding to the i-th first indicator, x i represents the geological characteristics of the i-th first indicator; X i is x i The value range of u i (x i ) indicates that the first index is at the value x i The preset numerical range under represents the influence of the specific geological characteristics of the first indicator on the formation of geothermal resources, and n represents the total number of the first indicators corresponding to the geothermal resource potential evaluation layer.

[0011] According to one aspect of an embodiment of the present specification, according to the preset weight of the second indicator of the geothermal resource potential evaluation layer and the fuzzy evaluation result corresponding to the geological characteristics of the second indicator, determining the second evaluation result related to the geothermal resource potential evaluation layer and the historical geological activity includes: determining the second evaluation result according to the following formula:

[0012] in, represents the second evaluation result of evaluating the potential of geothermal resources; k i represents the preset weight corresponding to the i-th second indicator, x i represents the geological characteristics of the i-th second indicator; X i is x i The value range of u i (x i ) indicates that the second index takes the value x i The preset numerical range under represents the influence of the geological characteristics of the second indicator on the formation of geothermal resources, and n represents the total number of second indicators corresponding to the geothermal resource potential evaluation layer.

[0013] According to one aspect of an embodiment of the present specification, the geothermal resource potential evaluation layer includes the shallow crust, the crust and the mantle lithosphere, and the second indicator related to the layer depth or geothermal factors of the geothermal resource potential evaluation layer includes: the crust thickness of the deep crust, the bottom boundary depth of the mantle lithosphere and the sedimentary layer thickness of the shallow crust.

[0014] According to one aspect of an embodiment of the present specification, the second indicator related to the historical geological activity of the geothermal resource potential evaluation layer includes: the activity time of mantle plumes in the mantle lithosphere, the intrusion time of mantle materials in the crust and the solidification time of magma chambers, and the cessation time of volcanic activity in the shallow crust.

[0015] The embodiment of the present specification also provides a geothermal resource potential evaluation device, the device comprising: a determination unit, used to determine the geological characteristics of a second indicator related to the layer depth or geothermal factors of the geothermal resource potential evaluation layer in the target geothermal evaluation area, and the geological characteristics of the second indicator related to the historical geological activities of the geothermal resource potential evaluation layer, wherein the resource potential evaluation layer belongs to the first indicator; a first evaluation result determination unit, used to determine the first evaluation result related to the current geothermal geological conditions of the first indicator according to the preset weight of each first indicator and the fuzzy evaluation result corresponding to the geological characteristics of the second indicator related to the layer depth or geothermal factors of the first indicator; a second evaluation result determination unit, used to determine the second evaluation result related to the thermal effect of the first indicator in the recent period according to the preset weight of each first indicator and the fuzzy evaluation result corresponding to the geological characteristics of the second indicator related to the historical geological activities of the first indicator; an indicator evaluation result determination unit, used to determine the geothermal resource potential evaluation result of the target geothermal evaluation area according to the first evaluation result and the second evaluation result.

[0016] The embodiments of the present specification also provide a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the geothermal resource potential evaluation method is implemented when the processor executes the computer program.

[0017] The embodiments of the present specification also provide a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the geothermal resource potential evaluation method is implemented.

[0018] Based on the research results of seismic wave velocity, rock properties, rock geochemistry, low-temperature thermochronology and stratigraphy, this paper comprehensively compares the geothermal resource potential under different geothermal formation mechanisms. This evaluation method considers more comprehensive geological factors, not only considering geothermal geological conditions of different scales from the lithospheric mantle to the shallow crust in space, but also considering the impact of thermal events in recent geological history on the formation of current geothermal resources in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 The figure shows a method flow chart of a method for evaluating geothermal resource potential according to an embodiment of the present specification;

[0021] Figure 2 The flowchart of a method for determining a fuzzy evaluation result corresponding to a geological feature of a second indicator according to an embodiment of the present specification is shown;

[0022] Figure 3 The flowchart of a method for determining a fuzzy evaluation result corresponding to a geological feature of a second indicator related to a historical geological activity of a first indicator according to an embodiment of the present specification is shown;

[0023] Figure 4 The figure shows a schematic diagram of the structure of a geothermal resource potential evaluation device according to an embodiment of the present specification;

[0024] Figure 5 Shown is a schematic diagram of the preset weights of the first indicator and the second indicator in the embodiment of this specification;

[0025] Figure 6 Shown is a schematic diagram of indicators of geothermal resource potential evaluation layers and corresponding evaluation results in the embodiment of this specification;

[0026] Fig. 7A Shown is a schematic diagram of specific evaluation results of geothermal resource potential in the target geothermal evaluation area of ​​the embodiment of this specification;

[0027] Figure 7B It is a schematic diagram showing the final evaluation result of the geothermal resource potential of the target geothermal evaluation area of ​​the embodiment of this specification;

[0028] Figure 8 The figure shows a schematic diagram of the structure of a computer device according to an embodiment of the present specification.

[0029] Description of the accompanying symbols:

[0030] 401. indicator determination unit;

[0031] 402. a first evaluation result determining unit;

[0032] 403. Second evaluation result determination unit;

[0033] 404. Evaluation result determination unit;

[0034] 802. Computer equipment;

[0035] 804, processor;

[0036] 806. Memory;

[0037] 808, driving mechanism;

[0038] 810, input / output module;

[0039] 812. Input device;

[0040] 814. Output device;

[0041] 816. Presentation equipment;

[0042] 818. Graphical user interface;

[0043] 820, network interface;

[0044] 822, communication link;

[0045] 824. Communication bus. DETAILED DESCRIPTION

[0046] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this specification.

[0047] It should be noted that the terms "first", "second", etc. in the description and claims of this specification and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of this specification described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, device, product or equipment that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0048] This specification provides method operation steps as described in the embodiments or flow charts, but more or fewer operation steps may be included based on routine or non-creative work. The order of steps listed in the embodiments is only one way of executing the order of many steps and does not represent the only execution order. When the system or device product is executed in practice, it can be executed in the order of the method shown in the embodiments or the drawings or in parallel.

[0049] It should be noted that the geothermal resource potential evaluation method of this specification can be used in the field of geothermal resource exploration and research, and this specification does not limit the application field of the geothermal resource potential evaluation method and device.

[0050] Figure 1 The above is a flow chart of a method for evaluating geothermal resource potential according to an embodiment of this specification, which specifically includes the following steps:

[0051] Step 101, determining the geological characteristics of a second indicator related to the layer depth or geothermal factors of the geothermal resource potential evaluation layer in the target geothermal evaluation area, and the geological characteristics of a second indicator related to the historical geological activities of the geothermal resource potential evaluation layer.

[0052] Among them, the resource potential evaluation layer belongs to the first indicator.

[0053] In the embodiment of this specification, the target geothermal potential evaluation area includes geothermal fields that have been developed or are being developed, or undeveloped geothermal fields. This specification embodiment selects seven major geothermal areas, including the Gonghe Basin in Qinghai, the Jizhong Depression in North China, the Sanshui Basin in Guangdong, the Subei Basin in Jiangsu, the Changbai Mountain area in Jilin, the Tengchong area in Yunnan, and the Guanzhong Basin in Shaanxi, as the target geothermal potential evaluation areas to evaluate and compare the potential of geothermal resources. Specifically, for each target geothermal evaluation area, the geothermal resource potential evaluation horizon is determined. Among them, according to the spatial logic of the horizon, the lithospheric mantle, the deep crust (>10km) and the shallow crust (<10km) are selected from bottom to top as the geothermal resource potential evaluation horizon, which can also be called the first indicator.

[0054] In this step, the geological characteristics of the second indicator of each geothermal resource potential evaluation layer in each target geothermal evaluation area are obtained based on the records and research results of disciplines such as seismic wave velocity, rock properties, rock geochemistry, low-temperature thermochronology and stratigraphy. For example, the first indicator of the crust includes the second indicator of the crust thickness, and the specific value of the crust thickness is the geological characteristic of the second indicator.

[0055] In some embodiments of this specification, the second indicator is related to the layer depth or geothermal factors of the geothermal resource potential evaluation layer, which can be understood as a bottom-up indicator; in other embodiments of this specification, the second indicator is related to the historical geological activities of the geothermal resource potential evaluation layer, which can be understood as an indicator from ancient times to the present. Among them, the layer depth represents the layer thickness or rock layer thickness of the geothermal resource potential evaluation layer. Geothermal factors are related to high-temperature heat sources. Historical geological activities are related to the historical formation time of geothermal resources.

[0056] Therefore, this manual evaluates the geological conditions that are conducive to the formation of geothermal resources from the bottom up, from the lithospheric mantle to the shallow crust, and assesses the impact of thermal events that occurred in geological history on the formation of current geothermal resources.

[0057] Step 102, according to the preset weight of each first indicator and the fuzzy evaluation result corresponding to the geological characteristics of the second indicator related to the layer depth of the first indicator or the geothermal factor, determine the first evaluation result related to the current geothermal geological conditions of the first indicator.

[0058] In this specification, the differences in current geothermal geological conditions will result in different geothermal resource potentials in the target geothermal evaluation area. For example, the presence of magma pockets in the earth's crust can greatly increase the geothermal resource potential of the area.

[0059] In the embodiments of this specification, the second indicator of each geothermal resource potential evaluation layer is different according to the characteristics of different layers. Among them, the second indicator related to the layer depth of the geothermal resource potential evaluation layer specifically includes: the first indicator of the thickness of the sedimentary layer of the shallow crust, the first indicator of the Moho surface depth of the deep crust, the first indicator of the lithosphere bottom boundary depth of the lithosphere mantle, etc.

[0060] The second indicator related to the geothermal resource potential evaluation layer or the first indicator geothermal factor indicates whether there is a high-temperature heat source in the corresponding geothermal resource potential evaluation layer. For the first indicator, the lithospheric mantle, the second indicator related to the geothermal factor includes: the distance from the active plate boundary, the existence and distance of the mantle plume or mantle upwelling; for the first indicator, the deep crust, the second indicator related to the geothermal factor includes: the intrusion of mantle materials, the existence and scale of magma chambers; for the first indicator, the shallow crust, the second indicator related to the geothermal factor includes: the presence of volcanic activity, the radioactive heat generation rate of crystalline rocks, the number of main controlling faults, and the type of heat reservoir.

[0061] In the embodiments of this specification, the thickness of the sedimentary layer of the shallow crust is the insulation layer; the volcanic activity in the first indicator related to the shallow crust and geothermal factors can be understood as the magma sac on the surface. Rocks are radioactive and generate heat themselves. Therefore, the second indicator related to the shallow crust and geothermal factors includes the radioactive heat generation rate of crystalline salt. The main control faults serve as heat channels connecting the deep and shallow layers, and the number of them also affects the heat transfer of geothermal.

[0062] In this specification, the greater the depth of the lithosphere bottom boundary, the greater the thickness of the crust, which hinders the heat transfer of high-temperature heat sources from deep to shallow layers, while the sedimentary layer of the shallow crust plays a role of insulation. The greater the thickness of the sedimentary layer, the better the insulation effect; conversely, the worse the insulation effect. The embodiments of this specification do not limit the evaluation result algorithm of each first indicator, which can be adjusted according to the geological geothermal conditions of different target geothermal evaluation areas.

[0063] In the embodiment of this specification, the first evaluation result is determined according to the following formula:

[0064]

[0065] in, k represents the fuzzy evaluation number of geothermal resource rights, and is also the first evaluation result of geothermal resource potential in this specification; i represents the preset weight corresponding to the i-th second indicator, x i represents the geological characteristics of the i-th second indicator; X i is x i The value range of u i (x i) indicates that the second index takes the value x i The preset numerical range below reflects the degree of influence of the specific geological characteristics of the second indicator on the formation of geothermal resources, which is the fuzzy evaluation result corresponding to the second indicator, and n represents the total number of second indicators corresponding to the geothermal resource potential evaluation layers. In the above formula, the preset weight of the second indicator may include: the weight corresponding to each geothermal resource potential evaluation layer (also referred to as the intra-layer weight of the evaluation layer), the weight of the second indicator corresponding to each geothermal resource potential evaluation layer (also referred to as the intra-layer weight of the first indicator). Figure 5 As shown, the intra-layer weight corresponding to the lithospheric mantle is 0.2, the intra-layer weight corresponding to the deep crust is 0.3, and the intra-layer weight corresponding to the shallow crust is 0.5. The weight of the first indicator, the distance from the active plate boundary, is 0.3... The weight corresponding to the volcanic activity of the first indicator, the shallow crust, is 0.4, and the weight corresponding to the existence and scale of the magma chamber in the deep crust is 0.5, etc. In the above formula, the fuzzy evaluation result corresponding to the first indicator can be a level, such as A, B, C1, C2, C3, which respectively represent the geothermal resource potential of the evaluation layer. The fuzzy evaluation result can also be a specific score, and the size of the score can also represent the geothermal resource potential of the evaluation layer.

[0066] Furthermore, combined with the formula According to the preset weight of each second indicator, the fuzzy evaluation result of each second indicator is multiplied by the preset weight corresponding to the indicator, and then added up to obtain the first evaluation result related to the first indicator corresponding to the geothermal resource potential evaluation layer and the current geothermal geological conditions.

[0067] Step 103, determining a second evaluation result of the first indicator related to the thermal effect in recent period according to the preset weight of each first indicator and the fuzzy evaluation result corresponding to the geological characteristics of the second indicator related to the historical geological activity of the first indicator.

[0068] In the embodiments of this specification, recent thermal events will also affect the formation of current geothermal resources. For example, the residual heat of the magma chamber cooled within 5 million years in the crust still contributes to the formation of current geothermal resources. Therefore, this specification not only considers the geothermal geological conditions of different scales from the lithospheric mantle to the shallow crust in space, but also considers the influence of the residual heat effect of recent thermal events on the formation of current geothermal resources in time, and the geological factors considered are more comprehensive.

[0069] In this step, the second evaluation result can be determined according to the following formula:

[0070] in, k represents the fuzzy evaluation number of geothermal resource rights, and is also the second evaluation result of geothermal resource potential in this specification;i represents the preset weight corresponding to the i-th second indicator, x i represents the geological characteristics of the i-th second indicator; X i is x i The value range of u i (x i ) indicates that the second index takes the value x i The preset numerical range under reflects the influence of the geological characteristics of the second indicator on the formation of geothermal resources, which is the fuzzy evaluation result corresponding to the second indicator, and n represents the total number of second indicators corresponding to the geothermal resource potential evaluation layer.

[0071] In the above formula, the preset weight of the second indicator may include: the weight corresponding to each geothermal resource potential evaluation layer (also referred to as the layer weight of the evaluation layer), the weight of the second indicator corresponding to each geothermal resource potential evaluation layer (also referred to as the layer weight of the second indicator). Figure 5 As shown, the weight of the layer corresponding to the lithospheric mantle is 0.2, the weight of the layer corresponding to the deep crust is 0.3, and the weight of the layer corresponding to the shallow crust is 0.5. The weight corresponding to the activity time of the second indicator of the lithospheric mantle, the mantle plume or mantle upwelling, is 0.45... The weight corresponding to the second indicator of the volcanic cessation time of the first indicator of the shallow crust is 0.8, and the weight corresponding to the second indicator of the stratum erosion and sedimentation process of the first indicator of the shallow crust is 0.008, etc.

[0072] In the above formula, the fuzzy evaluation result corresponding to the second indicator can be expressed in the form of a level, such as A, B, C1, C2, C3, which respectively represent the geothermal resource potential of the evaluation layer. The fuzzy evaluation result can also be a specific score, and the size of the score can also represent the geothermal resource potential of the evaluation layer. This manual does not limit the form of the fuzzy evaluation result. In this step, according to the formula After multiplying the preset weight of each second indicator by the fuzzy evaluation result, the results are added up to obtain the second evaluation result related to the geothermal resource potential evaluation layer and the historical geological activities.

[0073] Step 104: Determine the geothermal resource potential evaluation result of the target geothermal evaluation area based on the first evaluation result and the second evaluation result.

[0074] In this step, based on the first evaluation results and the second evaluation results determined in step 102 and step 103, the first evaluation results related to all historical geological activities related to the first indicator and the second evaluation results related to the thermal effects of the recent period related to all first indicators can be directly added together, and the result obtained is the total score of the geothermal resource potential evaluation of the target geothermal evaluation area. Figure 5The weight corresponding to the first evaluation result and the first evaluation result shown in , and the weight corresponding to the second evaluation result and the second evaluation result are weighted and summed to obtain the total score of geothermal resource potential evaluation of each target geothermal evaluation area, where the weight corresponding to the first evaluation result is 0.9, and the weight corresponding to the second evaluation result is 0.1. Figure 6 As shown, the geothermal evaluation results of 7 target geothermal evaluation areas were finally obtained.

[0075] Figure 2 The flowchart of the method for fuzzy evaluation results corresponding to the geological characteristics of the second indicator in the embodiment of this specification is shown, which specifically includes the following steps:

[0076] Step 201, determine whether there is a geothermal factor in the second indicator related to the layer depth or geothermal factor of each first indicator. In the embodiment of this specification, the geothermal factor can be understood as a high-temperature heat source generated from deep in the earth or heat inside the earth.

[0077] Determining whether each layer in the geothermal resource potential evaluation layer contains geothermal factors specifically includes: determining the distance between the lithospheric mantle and the boundary of the active plate, whether there is a mantle plume or mantle upwelling in the lithospheric mantle; determining whether there is mantle material intrusion in the deep crust, whether there are magma pockets; determining whether volcanic activity occurs in the shallow crust, and determining whether there are crystalline rocks, the number of main controlling faults, etc.

[0078] Step 202: If yes, determine the first geological feature of the second indicator related to the geothermal factor of each first indicator and the second geological feature of the second indicator related to the layer depth.

[0079] In this step, if there is a geothermal factor in the second indicator corresponding to the geothermal resource potential evaluation layer, the geological characteristics of various geothermal factors in each geothermal resource potential evaluation layer are further determined. The geological characteristics can be characterized by the scale and range of various geothermal factors, or by the distance between the geothermal factor and the regional center of the geothermal resource potential evaluation layer.

[0080] In one embodiment of the present specification, for the lithosphere mantle, the presence of a mantle plume or a mantle upwelling is the geothermal factor of the lithosphere mantle. The distance between the mantle plume or the mantle upwelling and the regional center of the lithosphere mantle can be further determined, and the distance is the geological characteristic of the geothermal factor of the lithosphere mantle. Among them, the closer the mantle plume or the mantle upwelling in the lithosphere mantle is to the regional center of the mantle lithosphere, the more concentrated the heat is; the farther the mantle plume or the mantle upwelling is from the regional center of the mantle lithosphere, the more dispersed the heat is.

[0081] In another embodiment of the present specification, for the deep crust, the presence of mantle material intrusion and magma chambers are geothermal factors of the deep crust. Among them, the intrusion form of mantle material and the size or scale of magma chambers are the geological characteristics of geothermal factors of the deep crust. For the deep crust with intruded mantle material and magma chambers, the larger the size or scale of the mantle material or magma chamber, the more favorable it is for the propagation of high-temperature heat sources.

[0082] In another embodiment of the present specification, for the shallow crust, the presence of volcanic activity in the shallow crust is the geothermal factor of the shallow crust. The distance between the volcanic activity in the shallow crust and the regional center of the shallow crust is the geological characteristic of the geothermal factor. Among them, the farther the volcanic activity is from the regional center of the shallow crust, the smaller the impact of the volcanic activity on geothermal heat; conversely, the greater. In addition, for the shallow crust, because the crystallized salt itself generates heat, the more crystallized salt there is in the crust, the more heat there is in the crust. The more main controlling faults there are in the crust, the higher the heat transfer efficiency. Therefore, the radioactive heat generation rate of the crystallized salt and the number of main controlling faults also belong to the geological characteristics of the geothermal factor of the shallow crust.

[0083] In order to distinguish the geological characteristics of the second indicator related to the stratum depth, this specification refers to the geological characteristics of geothermal factors as the first geological characteristics, and the geological characteristics of the second indicator related to the stratum depth as the second geological characteristics.

[0084] In this specification, the second indicators related to the stratigraphic depth of the first indicator are: the depth of the lithosphere bottom of the lithosphere mantle, the depth of the Moho surface of the deep crust, and the thickness of the sedimentary layer of the shallow crust. Among them, the second geological characteristics of each second indicator refer to: the depth value of the lithosphere bottom of the lithosphere mantle, the depth value of the Moho surface of the deep crust, and the thickness value of the sedimentary layer of the shallow crust.

[0085] In this specification, the second indicator related to the geothermal factor of the first indicator includes: the distance between the lithospheric mantle and the boundary of the active plate, the range or scale of the mantle plume or mantle upwelling in the lithospheric mantle; judging the range of mantle material intrusion in the deep crust, the size or scale of magma chambers; the scale range of volcanic activity in the shallow crust, etc.

[0086] In an embodiment of the present specification, the preset numerical range of the second indicator related to the stratigraphic depth of the first indicator includes: a preset numerical range of the bottom boundary depth of the mantle lithosphere, a preset numerical range of the Moho surface depth of the deep crust, and a preset numerical range of the sedimentary layer thickness of the shallow crust.

[0087] Specifically, the preset numerical ranges of the depth of the bottom boundary of the mantle lithosphere include: less than 70km, 70-80km, 80-90km, 90-100km and greater than 100km. The preset numerical ranges of the depth of the Moho surface of the deep crust are: less than 25km, 25-35km, 35-45km, 45-55km and greater than 55km; the preset numerical ranges of the thickness of the sedimentary layer of the shallow crust are: greater than 6km, 3-6km, 1.5-3km, 0.5-1.5km and less than 0.5km.

[0088] In the embodiment of the present specification, the preset numerical range of the second indicator related to the geothermal factor includes: the numerical range of the distance between the lithospheric mantle and the active plate boundary, the numerical range of the radius of the magma chamber in the deep crust, the numerical range of the radius of the volcanic activity in the shallow crust, etc. For example, the distance between the lithospheric mantle and the active plate boundary is less than 50km, the distance is between 50-100km, the distance is between 100-200km, the distance is between 200-500km, and the distance is greater than 500km; the radius of the magma chamber in the deep crust is less than 1km, the radius of the magma chamber in the deep crust is in the range of 1-3km, the radius of the magma chamber in the deep crust is in the range of 3-5km, and the radius of the magma chamber in the deep crust is greater than 5km, etc.

[0089] Step 203: Determine the fuzzy evaluation result corresponding to the geological feature of the second indicator according to the preset value interval within which the second geological feature and the first geological feature fall.

[0090] In this step, based on the specific values ​​of the first geological feature and the second geological feature, it can be determined which preset numerical range the first geological feature and the second geological feature fall into. After determining the preset numerical range that the second indicator falls into, the geothermal resource potential level corresponding to the second indicator is further determined based on the geothermal resource potential level corresponding to each preset numerical range and the fuzzy evaluation method. The geothermal resource potential level is the fuzzy evaluation result.

[0091] In the embodiment of this specification, if there is a second index mantle plume or mantle upwelling geothermal factor within 50 km of the center of the lithospheric mantle region, and the geological feature of the geothermal factor is 60 km, it is recorded as x 1 , x 1 Indicates the geological characteristics of the first second indicator. Determine the preset value interval that the value of 60km falls into, and record the preset value interval as u i (x 1 ),u i (x 1 ) indicator at the value x 1 The evaluation interval under the second indicator indicates the influence of the specific geological characteristics of the second indicator on the formation of geothermal resources, thereby obtaining the fuzzy evaluation result of the second indicator. Figure 6 The content determines the resource potential level corresponding to the geological characteristics of the second indicator.

[0092] For example, if there is a mantle plume or a mantle upwelling within 50 km of the center of the lithospheric mantle region, the score of the lithospheric mantle for the second indicator of the mantle plume or the mantle upwelling can be 100 points, or corresponding to level A, indicating high potential; if there is a mantle plume or a mantle upwelling within 50 km to 100 km of the center of the lithospheric mantle region, the score of the lithospheric mantle for the first indicator of the mantle plume or the mantle upwelling can be 75 points, or corresponding to level B, indicating relatively high potential; if there is a mantle plume or a mantle upwelling within 100 km to 200 km of the center of the lithospheric mantle region, the score of the lithospheric mantle for the first indicator of the mantle plume or the mantle upwelling can be 75 points, or corresponding to level B, indicating relatively high potential. The score of the lithosphere regarding the second indicator of mantle plumes or mantle upwelling can be 50 points, or corresponding to the C1 level, indicating medium potential; if there is a mantle plume or a mantle upwelling within 200km to 400km in the center of the lithospheric mantle region, the score of the lithosphere mantle regarding the second indicator of the mantle plume or mantle upwelling can be 25 points, or corresponding to the C2 level, indicating relatively low potential; if there is no mantle plume or mantle upwelling within 400km in the center of the lithospheric mantle region, the score of the mantle lithosphere regarding the second indicator of the mantle plume or mantle upwelling can be 0 points, or corresponding to the C3 level, indicating low potential.

[0093] In the above example, there are 5 preset distance value intervals, namely the evaluation intervals, which can be recorded as u 1 (x i ), represents the evaluation interval within 50 km of the center of the lithospheric mantle region, u 2 (x i ) represents the evaluation interval within 50km to 100km in the center of the lithospheric mantle region, u 3 (x i ) represents the evaluation interval from 100km to 200km in the center of the lithospheric mantle region, u 4 (x i ) represents the evaluation interval between 200km and 400km in the center of the lithospheric mantle region, u 5 (x i ) represents the evaluation interval within 400 km of the center of the lithospheric mantle region.

[0094] Further, according to the fuzzy evaluation result calculation formula, the fuzzy evaluation result of the second indicator is determined.

[0095] A i ={(x i ,u i (x i )),x i ∈X i}; where xi Indicates i The geological characteristics of the second indicator; X i is x i The value range of u i (x i ) indicator at the value x i The evaluation interval below indicates the degree of influence of specific geological characteristics on the formation of geothermal resources. i It indicates the geothermal resource potential evaluation result corresponding to the evaluation interval.

[0096] In the embodiments of this specification, each indicator can correspond to 5 levels, which are recorded as A, B, C1, C2, and C3, and the corresponding levels are high potential, relatively high potential, medium potential, relatively low potential, and low potential. Figure 6 As shown, if the depth of the lithosphere bottom of the lithospheric mantle is 120km, when the depth of the lithosphere bottom of the mantle lithosphere is greater than 100km, the corresponding level of the indicator is C3, when the depth of the lithosphere bottom of the lithospheric mantle is in the range of 70-80km, the corresponding level of the indicator is B, and when the depth of the lithosphere bottom of the lithospheric mantle is in the range of 80-90km, the corresponding level of the indicator is C1.

[0097] For the lithospheric mantle, the distance between the regional center of the lithospheric mantle and the active plate boundary can also be determined. Specifically, the smaller the distance between the regional center of the lithospheric mantle and the active plate boundary, the higher the frequency of lithospheric mantle activity and the higher the possibility of heat transfer upward.

[0098] For example, for a lithospheric mantle region where the distance from the center of the lithospheric mantle region to the active plate boundary is less than 50 km, the score of the second indicator of the lithospheric mantle regarding the distance to the active plate boundary can be 100 points, or corresponding to level A, indicating high potential; for a lithospheric mantle region where the distance from the center of the lithospheric mantle region to the active plate boundary is between 50 km and 100 km, the score of the second indicator of the lithospheric mantle regarding the distance to the active plate boundary can be 75 points, or corresponding to level B, indicating relatively high potential; for a lithospheric mantle region where the distance from the center of the lithospheric mantle region to the active plate boundary is between 100 km and 200 km, the score of the second indicator of the lithospheric mantle regarding the distance to the active plate boundary can be 100 points, or corresponding to level B, indicating relatively high potential. The score of the second indicator of the distance from the active plate boundary can be 50 points, or corresponding to the C1 level, indicating medium potential; for the lithospheric mantle with a distance between the center of the lithospheric mantle region and the active plate boundary between 200km and 500km, the score of the second indicator of the distance from the active plate boundary can be 25 points, or corresponding to the C2 level, indicating low potential; for the lithospheric mantle with a distance between the center of the lithospheric mantle region and the active plate boundary greater than 500km, the score of the second indicator of the distance from the active plate boundary can be 0 points, or corresponding to the C3 level, indicating low potential. According to the above description of the evaluation interval, in the above example, there are 4 preset value intervals, namely evaluation intervals. According to the calculation formula of the simulation evaluation result, the fuzzy evaluation result of the second indicator of the distance from the active plate boundary of the lithospheric mantle can also be determined.

[0099] For example, for the deep crust with intruded mantle material and magma chambers, the size or scale of the magma chamber is further determined. Specifically, the larger the size or scale of the magma chamber, the more favorable it is for the propagation of high-temperature heat sources. For example, for a magma chamber with a radius of less than 1 km, the geothermal resource potential level of the deep crust regarding the second indicator of the magma chamber can be C2; ​​for a magma chamber with a radius in the range of 1-3 km, the geothermal resource potential level of the deep crust regarding the second indicator of the magma chamber can be C1; for a magma chamber with a radius of 3-5 km, the geothermal resource potential level of the deep crust regarding the second indicator of the magma chamber can be B. According to the above description of the evaluation interval, in the above example, there are 3 preset value intervals, namely the evaluation intervals. According to the calculation formula of the simulation evaluation result, the fuzzy evaluation result of the first indicator of the size or scale of the magma chamber in the deep crust can also be determined.

[0100] Figure 3 The flowchart of a method for determining a fuzzy evaluation result corresponding to the occurrence time of a thermal event of a second indicator according to an embodiment of the present specification is shown, which specifically includes the following steps:

[0101] Step 301, according to the time distance between the occurrence time of the thermal event of the second indicator and the current time, determine the preset value interval within which the time distance falls. The preset value interval reflects the influence of geothermal factors generated by historical geological activities on the geothermal resources forming the geothermal resource potential evaluation layer.

[0102] In the embodiments of this specification, the second indicator related to the historical geological activities of the geothermal resource potential assessment layer includes: the time of mantle plume activity or mantle upwelling activity in the lithospheric mantle, the time of deep fault activity in the deep crust, the time of mantle material intrusion and the solidification time of magma chamber, and the time of cessation of volcanic activity in the shallow crust. Furthermore, it also includes the sedimentation and burial process and the uplift and erosion process of the shallow crust.

[0103] For each second indicator, a preset numerical range corresponding to the occurrence time of the thermal event of each second indicator and the corresponding fuzzy evaluation result are pre-set. Therefore, this step can also use the fuzzy evaluation method to determine the fuzzy evaluation result corresponding to the geological characteristics of the second indicator related to the historical geological activities of the first indicator.

[0104] Taking the second indicator of the lithospheric mantle: the time of mantle plume or mantle upwelling activity as an example, the preset value range is: if there is no thermal event such as mantle plume or mantle upwelling in the lithospheric mantle region within 500,000 years (Ma) from now, the score is 0, or corresponds to the C3 level, indicating low potential; if there is a thermal event such as mantle plume or mantle upwelling in the lithospheric mantle region within 300,000 to 500,000 years (Ma) from now, the score is 25, or corresponds to the C2 level, indicating relatively low potential; if the mantle lithospheric region is within 300,000 to 500,000 years (Ma) from now, the score is 25, or corresponds to the C2 level, indicating relatively low potential. If there are thermal events such as mantle plumes or mantle upwelling within 150,000 to 300,000 years (Ma), the score is 50 points, or corresponds to level C1, indicating medium potential; if there are thermal events such as mantle plumes or mantle upwelling in the lithospheric mantle region within 50,000 to 150,000 years (Ma) from now, the score is 75 points, or corresponds to level B, indicating high potential; if there are thermal events such as mantle plumes or mantle upwelling in the lithospheric mantle region within 10,000 to 50,000 years (Ma) from now, the score is 100 points, or corresponds to level A, indicating high potential.

[0105] The above preset value range can be recorded as u i (x 11 ),u i (x 11 ) indicator in the 11th indicator (the time of mantle plume or mantle upwelling activity in the lithospheric mantle) x 11 The above embodiment corresponds to 5 evaluation intervals, and the score corresponding to each evaluation interval can be converted or mapped into the corresponding fuzzy evaluation result. Among them, the 5 evaluation intervals are: 1 The corresponding distance is within 500,000 years from now; u 2The corresponding distance is within 300,000 to 500,000 years from now; u 3 The corresponding distance is within 150,000 to 300,000 years from now; u 4 Corresponding to the distance from now to 50,000 to 150,000 years, u 4 Corresponding to 10,000 to 50,000 years from now. If the time of the thermal event of the mantle plume or mantle rise activity of the lithospheric mantle obtained in this step is 250,000 years from now, this time distance falls into the preset value interval u 3 .

[0106] Step 302: Determine the fuzzy evaluation result corresponding to the thermal event occurrence time of the second indicator according to the preset numerical range.

[0107] According to the embodiment in step 301, the time of occurrence of the thermal event of the mantle plume or mantle rising activity of the lithospheric mantle: the time distance from the present time is 250,000 years, and the time distance falls into the preset value interval u 3 . Further, according to the fuzzy evaluation result calculation formula, the fuzzy evaluation result of the indicator is determined. The fuzzy evaluation result can be a preset score or a preset level. Among them, the mapping relationship between the preset time area and the corresponding fuzzy evaluation result can be preset. For example, in the embodiment in step 301, the score corresponding to each preset numerical interval is the fuzzy evaluation result. Furthermore, the fuzzy evaluation result can be converted into a level according to the score size. This specification does not limit the form of the fuzzy evaluation result.

[0108] For example, the evaluation interval u 1 The corresponding fuzzy evaluation result is a score of 0, or a level of C3; u 2 Evaluation interval u 1 The corresponding fuzzy evaluation result is 25 points, or level C2; u 3 Corresponding evaluation interval u 1 The corresponding fuzzy evaluation result is 50 points, or level C1; u 4 Corresponding evaluation interval u 1 The corresponding fuzzy evaluation result is 75 points, or level B; the evaluation interval u 1 The corresponding fuzzy evaluation result is a score of 100 points, or a level of A.

[0109] like Figure 4 The figure shows a schematic diagram of the structure of a geothermal resource potential evaluation device according to an embodiment of the present specification. The figure describes the basic structure of the geothermal resource potential evaluation device, wherein the functional units and modules can be implemented in software, or a general chip or a specific chip can be used to implement geothermal resource potential evaluation. The device specifically includes:

[0110] The index determination unit 401 is used to determine the geological characteristics of the second index related to the layer depth or geothermal factors of the geothermal resource potential evaluation layer in the target geothermal evaluation area, and the geological characteristics of the second index related to the historical geological activities of the geothermal resource potential evaluation layer, wherein the resource potential evaluation layer belongs to the first index;

[0111] A first evaluation result determination unit 402 is used to determine a first evaluation result related to the first indicator and the current geothermal geological conditions according to a preset weight of each first indicator and a fuzzy evaluation result corresponding to the geological characteristics of the second indicator related to the layer depth or geothermal factor of the first indicator;

[0112] A second evaluation result determination unit 403 is used to determine a second evaluation result related to the thermal effect of the first indicator in recent period according to a preset weight of each first indicator and a fuzzy evaluation result corresponding to the geological characteristics of the second indicator related to the historical geological activity of the first indicator;

[0113] The evaluation result determination unit 404 is used to determine the geothermal resource potential evaluation result of the target geothermal evaluation area according to the first evaluation result and the second evaluation result.

[0114] This manual comprehensively considers the geological conditions for the formation of geothermal resources in space and time, overcoming the limitations of traditional methods that only consider shallow geological conditions to understand and evaluate geothermal resource potential, making the evaluation of geothermal resource potential more in line with actual conditions, thereby providing more scientific and effective guidance for the subsequent development and utilization of geothermal resources.

[0115] Figure 5 Shown is a schematic diagram of the preset weights of the first and second indicators of the embodiment of this specification. In the figure, the geothermal resource potential evaluation is determined according to the first evaluation result and the corresponding weight, and the second evaluation result and the corresponding weight. Among them, the first evaluation result is related to the current geothermal geological conditions, and the first evaluation result related to the current geothermal geological conditions is determined according to the geothermal resource potential evaluation layer (first indicator) and the second indicator corresponding to each first indicator. The second evaluation result is related to the thermal effect in the recent period, and the second evaluation result is determined according to the geothermal resource potential evaluation layer (first indicator) and the second indicator corresponding to each first indicator. It can be seen from the figure that the weight of the first evaluation result related to the current geothermal geological conditions is 0.9, which is much greater than the 0.1 weight corresponding to the second evaluation result related to the thermal effect in the recent period. Because the evaluation of geothermal resource potential under the current geothermal geological conditions reflects the influence of the high-temperature heat source in the layer on the formation of current geothermal resources. The evaluation of geothermal resource potential for thermal effects in the recent period reflects the influence of the residual heat of historical geological activities on the formation of current geothermal resources. The former is more important than the latter.

[0116] In the geothermal resource potential evaluation layer, according to the spatial depth relationship of the layer in the earth, the hierarchical analysis method can be used to assign different preset weights to different layers, as shown in the fourth column of the figure. When analyzing the first and second indicators of the geothermal resource rating layer, the weight corresponding to each indicator can be determined according to the hierarchical analysis method, as shown in the sixth column of the figure.

[0117] Figure 6 The following is a schematic diagram of the indicators of the geothermal resource potential evaluation layer and the corresponding evaluation results in the embodiment of this specification. In this specification, the evaluation level is determined according to the characteristics of 18 third-level indicators of the target geothermal evaluation area.

[0118] Fig. 7A It is a schematic diagram showing the specific evaluation results of the geothermal resource potential of the target geothermal evaluation area of ​​the embodiment of this specification, and specifically shows the geological characteristics and grade evaluation results of the first index and the second index of each of the seven evaluation areas.

[0119] Figure 7B The figure shows the final evaluation results of the geothermal resource potential of the target geothermal evaluation area of ​​the embodiment of this specification. The figure shows the comprehensive evaluation results of the geothermal resource potential of the seven evaluation areas. Among them, the comprehensive evaluation results of the geothermal resource potential of the Gonghe Basin in Qinghai are 18.0% high potential, 8.0% high potential, 17.2% medium potential, and the other 56.8% low potential.

[0120] like Figure 8 The diagram shows a schematic diagram of a computer device provided by an embodiment of the present specification. The geothermal resource potential evaluation method described in the present specification can be applied to the computer device. The computer device 802 may include one or more processors 804, such as one or more central processing units (CPUs), each of which may implement one or more hardware threads. The computer device 802 may also include any memory 806, which is used to store any kind of information such as code, settings, data, etc. Non-limitingly, for example, the memory 806 may include any one or more combinations of the following: any type of RAM, any type of ROM, flash memory device, hard disk, optical disk, etc. More generally, any memory may use any technology to store information. Further, any memory may provide volatile or non-volatile retention of information. Further, any memory may represent a fixed or removable component of the computer device 802. In one case, when the processor 804 executes an associated instruction stored in any memory or a combination of memories, the computer device 802 may perform any operation of the associated instruction. The computer device 802 also includes one or more drive mechanisms 808 for interacting with any memory, such as a hard disk drive mechanism, an optical disk drive mechanism, etc.

[0121] The computer device 802 may also include an input / output module 810 (I / O) for receiving various inputs (via input devices 812) and for providing various outputs (via output devices 814). A specific output mechanism may include a presentation device 816 and an associated graphical user interface (GUI) 818. In other embodiments, the input / output module 810 (I / O), the input device 812, and the output device 814 may not be included, and the computer device 802 may be used as a computer device in a network. The computer device 802 may also include one or more network interfaces 820 for exchanging data with other devices via one or more communication links 822. One or more communication buses 824 couple the components described above together.

[0122] The communication link 822 may be implemented in any manner, for example, through a local area network, a wide area network (e.g., the Internet), a point-to-point connection, etc., or any combination thereof. The communication link 822 may include any combination of hardwired links, wireless links, routers, gateway functions, name servers, etc. governed by any protocol or combination of protocols.

[0123] Corresponds to Figures 1 to 3 The method in the embodiment of the present specification also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above method are executed.

[0124] The embodiment of the present specification also provides a computer-readable instruction, wherein when the processor executes the instruction, the program therein causes the processor to execute the following Figures 1 to 3 The method shown.

[0125] It should be understood that in the various embodiments of this specification, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this specification.

[0126] It should also be understood that in the embodiments of this specification, the term "and / or" is only a description of the association relationship of the associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this specification generally indicates that the associated objects before and after are in an "or" relationship.

[0127] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed in this specification can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this specification.

[0128] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0129] In the several embodiments provided in this specification, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, or it can be an electrical, mechanical or other form of connection.

[0130] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiments of this specification.

[0131] In addition, each functional unit in each embodiment of this specification may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0132] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this specification is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of this specification. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0133] Specific embodiments are used in this specification to illustrate the principles and implementation methods of this specification. The description of the above embodiments is only used to help understand the methods and core ideas of this specification. At the same time, for those skilled in the art, according to the ideas of this specification, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on this specification.

Claims

1. A method for evaluating geothermal resource potential, characterized in that: The method comprises: Determine, in a geothermal resource potential evaluation layer in a target geothermal evaluation area, geological characteristics of a second indicator related to the layer depth or geothermal factors of the geothermal resource potential evaluation layer, and geological characteristics of a second indicator related to the historical geological activities of the geothermal resource potential evaluation layer, wherein the resource potential evaluation layer belongs to the first indicator; Determine a first evaluation result related to the first indicator and the current geothermal geological conditions according to a preset weight of each first indicator and a fuzzy evaluation result corresponding to the geological characteristics of the second indicator related to the layer depth or geothermal factor of the first indicator; Determine the second evaluation result of the first indicator related to the thermal effect in the recent period according to the preset weight of each first indicator and the fuzzy evaluation result corresponding to the geological characteristics of the second indicator related to the historical geological activities of the first indicator; Based on the first evaluation result and the second evaluation result, an evaluation result of the geothermal resource potential of the target geothermal evaluation area is determined.

2. The method according to claim 1, characterized in that The fuzzy evaluation result corresponding to the geological characteristics of the second indicator related to the layer depth or geothermal factor of the first indicator is determined in the following manner: Determining whether there is a geothermal factor in a second indicator related to the layer depth or geothermal factor of each first indicator; If so, determining a first geological feature of a second indicator associated with a geothermal factor of each first indicator and a second geological feature of the second indicator associated with a stratum depth; According to whether the second geological feature falls within the preset numerical interval and the first geological feature falls within the preset numerical interval, a fuzzy evaluation result corresponding to the geological feature of the second indicator is determined.

3. The method according to claim 2, characterized in that Determining the fuzzy evaluation results corresponding to the geological characteristics of the second indicator related to the historical geological activities of the first indicator in the following manner includes: According to the time distance between the occurrence time of the thermal event of the second indicator and the current time, determining the preset value interval within which the time distance falls, wherein the preset value interval reflects the influence of geothermal factors generated by historical geological activities on the geothermal resources forming the geothermal resource potential evaluation layer; According to the preset numerical range, a fuzzy evaluation result corresponding to the thermal event occurrence time of the second indicator is determined.

4. The method according to claim 3, characterized in that According to the preset weight of each first indicator and the fuzzy evaluation result corresponding to the geological characteristics of the second indicator related to the layer depth or geothermal factor of the first indicator, the first evaluation result related to the current geothermal geological conditions of the first indicator is determined to include: The first evaluation result is determined according to the following formula: in, represents the first evaluation result of geothermal resource potential; k i represents the preset weight corresponding to the i-th first indicator, x i represents the geological characteristics of the i-th second indicator; X i is x i The value range of u i (x i ) indicates that the second index takes the value x i The preset numerical range under represents the influence of the geological characteristics of the second indicator on the formation of geothermal resources, and n represents the total number of second indicators corresponding to the geothermal resource potential evaluation layer.

5. The method according to claim 1, characterized in that According to the preset weight of each first indicator and the fuzzy evaluation result corresponding to the geological characteristics of the second indicator related to the historical geological activities of the first indicator, the second evaluation result related to the thermal effect of the first indicator in the recent period is determined to include: The second evaluation result is determined according to the following formula: Among them, A2 represents the second evaluation result of geothermal resource potential; k i represents the preset weight corresponding to the i-th second indicator, x i represents the geological characteristics of the i-th second indicator; X i is x i The value range of u i (x i ) indicates that the second index takes the value x i The preset numerical range under represents the influence of the geological characteristics of the second indicator on the formation of geothermal resources, and n represents the total number of second indicators corresponding to the geothermal resource potential evaluation layer.

6. The method according to claim 5, characterized in that The geothermal resource potential evaluation horizon includes the shallow crust, the deep crust and the mantle lithosphere, and the second index related to the horizon depth or geothermal factors of the geothermal resource potential evaluation horizon includes: the crust thickness of the deep crust, the bottom boundary depth of the mantle lithosphere and the sedimentary layer thickness of the shallow crust; The second indicators related to geothermal factors of the geothermal resource potential evaluation layer include: whether there is a mantle plume in the lithospheric mantle, whether there is mantle material intrusion and magma chamber in the deep crust, and the number of main controlling faults in the shallow crust.

7. The method according to claim 6, characterized in that The second indicator related to the historical geological activities of the geothermal resource potential evaluation layer includes: the activity time of the mantle plume of the lithospheric mantle, the intrusion time of mantle materials in the deep crust and the solidification time of magma chambers, and the cessation time of volcanic activities in the shallow crust.

8. A geothermal resource potential evaluation device, characterized in that: The device comprises: A determination unit, used to determine, in a geothermal resource potential evaluation layer in a target geothermal evaluation area, geological characteristics of a second indicator related to the layer depth or geothermal factors of the geothermal resource potential evaluation layer, and geological characteristics of a second indicator related to the historical geological activities of the geothermal resource potential evaluation layer, wherein the resource potential evaluation layer belongs to the first indicator; A first evaluation result determination unit, for determining a first evaluation result related to the first indicator and the current geothermal geological conditions according to a preset weight of each first indicator and a fuzzy evaluation result corresponding to the geological characteristics of the second indicator related to the layer depth or geothermal factor of the first indicator; A second evaluation result determination unit is used to determine a second evaluation result related to the thermal effect of the first indicator in recent period according to a preset weight of each first indicator and a fuzzy evaluation result corresponding to the geological characteristics of the second indicator related to the historical geological activity of the first indicator; The indicator evaluation result determination unit is used to determine the geothermal resource potential evaluation result of the target geothermal evaluation area according to the first evaluation result and the second evaluation result.

9. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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