CN114036608A - Method for converting geological profile into ultimate balance calculation model - Google Patents
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Abstract
The invention relates to a method for converting a geological profile into a limit balance calculation model, which comprises the following steps: defining classification attributes of a calculation model range and a section line on the geological profile, and completing intersection and closure among terrains, stratums and model boundary lines of the geological profile by adopting a graphic geometric algorithm according to the requirement of ultimate balance modeling to form a material partition model; generating three calculation conditions of natural, rainstorm and earthquake and corresponding models by using the classification attributes of each section line in the geological section map; and judging the type of the slope according to the geological conditions, and recommending a proper limit balance calculation method to the calculation model. The invention not only omits the geometric operation of simulating the geological boundary distribution in the process of computational modeling, but also can generate a computational model meeting the requirements of the current technical specification according to geological information contained in the geological profile, and intelligently recommends a proper limit balance computation method according to the material classification characteristics disclosed by the geological profile.
Description
Technical Field
The invention belongs to the technical field of information, and particularly relates to a method for converting a geological profile into a limit balance calculation model.
Background
The limit balance is the most common stable calculation method in the slope engineering practice activities in the world at present, and a large amount of slope two-dimensional limit balance calculation software which runs independently has been developed at home and abroad, wherein Slide has the best commercialization degree and the most wide application. The independent operation of the calculation software has the common problems that the geometric information of the calculation section line and the corresponding geological information cannot be well utilized, and the influence on the technical level is highlighted in two aspects, wherein one is the influence of repeated input of the geometric information in the modeling process on the working efficiency and the quality, and the other is that the geological information and the controllability significance of the geometric information on the calculation working condition design and the calculation method selection are not utilized, so that the difficulty of the quality control of the calculation process is caused, and the engineering practical value of the achievement is influenced. More importantly, the geological profile and the two-dimensional calculation can be digitalized results of geological and calculation in two professional directions, the geological profile is directly converted into a limit balance calculation model, and essentially, the two professional digitalized technologies are fused, so that the realization of the specific embodiment of cross-professional digital technology connection is realized.
At present, when all two-dimensional limit balance software is used for creating a calculation model, control point coordinates of objects such as terrain, stratum, fracture, underground water and the like need to be extracted from a geological profile, and are reconstructed in the calculation software in modes of typing, drawing and the like, so that the efficiency is influenced, and errors can be generated.
Preferably, the information contained in the geological profile basically determines the combination of factors (models and working conditions) to be considered by computational analysis, and the potential problem nature determined by each combination and the computational analysis method to be adopted, namely, the information contained in the geological profile has very important significance for guiding modeling and computational method selection. The working quality of the links in the process of limit balance calculation often depends on the knowledge degree and experience of a calculator on engineering and calculation, the information of a good geological profile cannot be used from a mechanism to guide the correct calculation, the engineering practicability of a calculation result and the credit of calculation analysis work in engineering practice are directly influenced, and the pain point which exists up to now is formed.
More importantly, the digital technology is greatly popularized in the field of national infrastructure, and cross-professional connection is the technical bottleneck faced at present.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a method for converting a geological profile into a limit balance calculation model, which not only avoids manual operation of referring to a geological section line during calculation modeling, but also improves the efficiency and quality of the link; and moreover, the information of the geological profile can be used for assisting in designing calculation conditions and automatically generating corresponding models, a proper calculation method is intelligently recommended for each calculation model, the applicability of the calculation method and the reliability of results are improved, the engineering quality is improved by using expert experience, and the learning cost is reduced. More importantly, the invention realizes the fusion of a computer graphics (geological CAD) technology and a computing technology in the field of geological engineering, and solves the key link problem of the connection between geology and analysis of two professional directions.
The technical scheme of the invention is realized as follows: the invention discloses a method for converting a geological profile into a limit balance calculation model, which comprises the following steps:
s1: defining classification attributes of a calculation model range and a section line on a geological section map, wherein the classification attributes of the section line at least comprise terrain, stratum, fracture and underground water;
s2: the intersection and the closure among the landform, the stratum and the model boundary line of the geological profile are finished by adopting a graphic geometry algorithm to form a material partition model;
s3, generating three calculation conditions of nature, rainstorm and earthquake and corresponding models by using the classification attributes of each section line in the geological section map;
and S4, judging the type of the slope according to the geological conditions, and recommending a matched limit balance calculation method to the calculation model according to the type of the slope.
Preferably, step S2 specifically includes:
after the range of the two-dimensional limit balance calculation model is defined, whether two ends of a terrain line, a stratum line and an underground waterline in the sectional view are intersected with the defined model boundary or not is checked, and the model range is adjusted or the section line is lengthened when the two ends are not intersected;
optimizing the node density of the multi-segment line according to the default minimum line segment length, and removing repeated nodes or over-dense nodes;
and performing intersection operation by using the horizon, the terrain line and the model boundary to generate the boundary of the closed region, defining the geological attribute corresponding to each region, and completing material partition when the geological profile is converted into the calculation model to form a material partition model.
Preferably, the material partition model retains fractures and groundwater; when a plurality of underground water lines exist in the section geological line, the hydrological meteorological conditions corresponding to each underground water line are defined in sequence, and the hydrological meteorological conditions comprise natural rainstorm and heavy storm.
Preferably, the difference between natural and heavy rain conditions is the choice of groundwater level: the earthquake working condition additionally considers the action of earthquake load according to the condition of natural working condition; under the natural working condition, a natural water line is adopted to participate in calculation; under the condition of heavy rain, the heavy rain bit line is adopted to participate in calculation, and under the condition of earthquake, the earthquake load is defined by a user to participate in calculation.
Preferably, step S1 is preceded by a geological profile preprocessing step, including: and (3) opening the geological profile file in the dwg format commonly used in the engineering industry by using corresponding software, and converting the geological profile file into a multi-segment line when the section line comprises a line type except the multi-segment line so as to finish the line type processing.
Preferably, step S3 further includes the steps of: and identifying a natural side slope and an artificial side slope according to the classification attribute of the section geological line, generating a natural side slope calculation model when the natural side slope is identified, and generating an artificial side slope calculation model and a natural side slope calculation model when the artificial side slope is identified.
Preferably, when the terrain does not contain the artificial slope, the terrain is judged to be a natural slope; when the terrain comprises the artificial side slope, the excavation side slope and the filling side slope are judged according to the specific type.
Preferably, step S4 specifically includes: corresponding to the unique geological condition in the defined model, defining the slope type as one of rock slope, soil slope and rock-soil mixture according to the geological condition, recommending a default calculation method, and when the slope type is the rock slope, recommending three calculation methods of MP, Sarma and residual thrust by default; when the type of the side slope is a soil slope, a Bishop method is adopted by default, and an arc-shaped sliding surface and automatic search are adopted for solving; when the slope type is a rock-soil mixed slope, a Bishop method is adopted for a soil layer, three calculation methods of MP, Sarma and residual thrust are adopted for a rock layer, and a rock-soil interface is set as a potential slip surface.
Preferably, a database or a form mode is adopted to record the corresponding relation between the geological object physical and mechanical characteristic classification and rock slope, soil slope and rock-soil mixed three types of side slopes, and the side slope type is automatically judged according to the input geological object physical and mechanical characteristics.
The invention has at least the following beneficial effects:
aiming at the problem of cross-professional connection between geology and calculation in the digital technology development process in the field of infrastructure, the invention converts a geological profile commonly used in engineering into a limit balance calculation model in a general form, finally realizes the intersection and closure among the terrain, stratum, underground water level line and calculation profile boundary line of the geological profile, forms a general calculation model which meets the requirements of calculation model soil body division and parameter assignment and takes material partition as a mark, converts the generated general two-dimensional calculation model into a plurality of calculation models containing different working conditions according to the geological information of the geological profile and the requirements of industrial specifications, adopts the principle of ' condition + working condition ' in the model design, defines all slope types as rock slope types and rock slope types according to the geological conditions and the corresponding unique geological conditions in the model defined by the ' condition And one of soil slope and rock soil mixture is adopted, so that a default calculation method is recommended. The invention not only omits the geometric operation of simulating the geological boundary distribution in the process of computational modeling, but also can generate a computational model meeting the requirements of the current technical specification according to geological information contained in the geological profile and intelligently recommend a proper computational balance calculation method according to the material classification characteristics disclosed by the geological profile.
The method not only avoids manual operation of referring to the geological section line during calculation and modeling, but also improves the efficiency and quality of the link; and the information of the geological profile can be used for assisting in designing the calculation conditions and automatically generating the corresponding models, and a proper calculation method is intelligently recommended for each calculation model, so that the engineering quality is improved and the learning cost is reduced by using expert experience. More importantly, the invention realizes the fusion of a computer graphics (geological CAD) technology and a computing technology in the field of geological engineering, and solves the key link problem of the connection between geology and analysis of two professional directions.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a method of converting a geological profile into a limit balance calculation model provided by an embodiment of the invention;
FIG. 2 is a schematic diagram of a transformation-generated extreme balance calculation model using geological profile and geological boundary line closure techniques according to the present invention;
FIG. 3 is a schematic diagram of the intelligent model design and auxiliary modeling of the present invention;
FIG. 4 is a schematic diagram of a natural slope calculation model of the present invention;
FIG. 5 is a schematic diagram of an artificial slope calculation model of the present invention;
FIG. 6 is a schematic diagram of an intelligent recommendation implementation of the computing method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
FIG. 1 shows a flow chart of an implementation of a method for converting a geological profile into a limit balance calculation model, comprising the following steps:
s1: and assigning type attributes to the lines on the geological profile, wherein the type attributes at least comprise four types of landforms (including excavation), stratums, fractures and underground water. When a plurality of underground water lines exist, sequentially defining the hydrometeorological conditions (such as rainstorm and nature) corresponding to each underground water line; defining the range (origin coordinates, model length and height) of a two-dimensional extreme balance calculation model;
s2: intersecting and sealing the landform, the stratum and the model boundary line of the geological profile by adopting a graphic geometric algorithm according to the limit balance modeling requirement to form a material partition model;
s3, generating default natural, rainstorm and earthquake calculation working conditions and corresponding models according to the requirements of current multiple industry and area specifications on the natural working conditions, rainstorm working conditions and earthquake working conditions of the side slope on the classification attributes of each section line in the geological section map;
and S4, judging the type of the slope according to the geological conditions, and recommending a matched limit balance calculation method to the calculation model according to the type of the slope.
Preferably, step S1 is preceded by a geological profile preprocessing step, including: and (3) opening the geological profile file in the dwg format commonly used in the engineering industry by using corresponding software, and converting the geological profile file into a multi-segment line when the section line comprises a line type except the multi-segment line so as to finish the line type processing.
Fig. 2 shows a schematic diagram of classifying geological lines based on geological profiles, wherein the classification at least needs to include terrain (including artificial slopes), strata (including unloads), fractures and groundwater levels, and further adopts a geometric figure algorithm of intersecting and sealing geological lines to complete sealing among boundary lines of the terrain (including artificial slopes), the strata (including unloads) and the model, so as to form a material partition model, and retain fracture F1 and groundwater level geological information in the model.
The step S2 directly carries out targeted processing on the section line of the geological section map according to the action of the section line in the calculation model, directly finishes the intersection and the closure of three objects of the terrain, the stratum and the model boundary, meets the requirements of dividing soil strips and assigning materials for the calculation model, forms a general calculation model taking the material partition as a mark, retains the fracture and the underground water in the general calculation model, and avoids repeating geometric operations such as drawing the geological section line during calculation modeling. The process is directly carried out on the imported geological profile without repeated coordinate input or drawing according to the position of the geological profile line, so that the working efficiency is improved.
Step S2 specifically includes: after the range (origin coordinates, model length and height) of the two-dimensional limit balance calculation model is defined, whether two ends of a terrain line, a stratum line and an underground waterline in the sectional view are intersected with the defined model boundary or not is checked, and the model range is adjusted or the section line is lengthened when the two ends are not intersected;
optimizing the node density of the multi-segment line according to the default minimum line segment length, and removing repeated nodes or over-dense nodes; for example, 100 nodes are arranged on one line, the length of each line segment is distributed between 0.01 m and 10.5m, the default minimum length of each line segment can be set to be 2m, and therefore line segment nodes smaller than 2m in the original line segment can be removed, and node density optimization is conducted on the line.
And performing intersection operation on the horizon line, the selected other lines and the model boundary to generate the boundary of the closed region, defining the geological attribute (such as the stratum code) corresponding to each region, and completing material partition when the geological profile is converted into the calculation model to form a material partition model.
Fig. 3 shows an intelligent model design and auxiliary modeling principle, and according to the classification attributes of the section geologic lines, automatic identification and judgment are performed to form a natural slope calculation model and an artificial slope calculation model shown in fig. 4 and 5, and for each calculation model, three calculation conditions of natural, heavy rain and earthquake and corresponding models are automatically generated, so that omission possibly caused during manual operation is avoided.
Firstly, recognizing that an artificial slope exists in a section line, and obtaining an artificial slope calculation model and a natural slope calculation model by utilizing a two-dimensional linear cutting and sealing technology after recognizing the artificial slope. And after the natural side slope is identified, obtaining a natural side slope calculation model by utilizing a two-dimensional linear cutting and sealing technology.
Preferably, when the terrain does not contain the artificial slope, the terrain is judged to be a natural slope; when the terrain comprises the artificial side slope, the artificial side slope is judged, and the excavation side slope and the filling side slope are judged according to the specific type.
When a plurality of water lines exist in the section geological line, weather conditions, such as nature and heavy rain, corresponding to the water lines are respectively specified. And when the two-dimensional linear cutting is closed to form a calculation model, three working conditions of nature, rainstorm and earthquake are established by default. The difference between the natural working condition and the rainstorm working condition lies in the selection of an underground water level line, the natural working condition selects a natural water level line, and the rainstorm working condition selects a rainstorm water level line. The seismic conditions are characterized by additionally taking into account the effect of the seismic load according to the conditions of the natural conditions. Under the natural working condition, identifying the participation of a natural water line in calculation; and under the rainstorm working condition, identifying a rainstorm water level line to participate in calculation. Under the earthquake working condition, the earthquake load is defined by a user and participates in calculation.
The model design adopts the principle of 'condition + working condition', wherein the condition comprises terrain (including slope), fracture combination condition and main engineering load condition of the working condition. A geological profile is converted into a limit balance calculation model under three working conditions by default, namely models corresponding to a natural working condition, a rainstorm working condition and an earthquake working condition.
Step S4 specifically includes: after the physical and mechanical characteristics of the geological object are obtained and classified, the side slope is divided into one of rock slope, soil slope and rock-soil mixture, a limit balance calculation method matched with an actual problem is intelligently recommended according to the classification result aiming at a given calculation model, and the applicability and the result reliability of the calculation method are improved.
Fig. 6 shows an implementation principle of automatically judging the type of the side slope according to geological conditions, dividing the side slope into one of rock slope, soil slope and rock-soil mixture, and intelligently recommending a calculation method.
Preferably, a database or a form mode is adopted to record the corresponding relation between the geological object physical and mechanical characteristic classification and rock slope, soil slope and rock-soil mixed slope, so that the slope type is automatically judged according to the input geological object physical and mechanical characteristic, and a corresponding calculation method is intelligently recommended.
Preferably, when the type of the side slope is a soil slope, a BiShop method is adopted, and a circular arc-shaped sliding surface and automatic search are adopted for solving;
preferably, when the slope type is a rock slope, the sliding surface can be assumed in a mode of completely specifying the sliding surface or partially specifying and searching by adopting an M-P method, a residual thrust method and a Sarma solution calculation.
Preferably, when the slope type is rock-soil mixed, the calculation method for the soil slope and the rock slope is adopted, and the rock-soil interface is set as a potential slip surface by default, and solution of complete designation or 'partial designation + search' is performed.
The invention realizes the fusion of the digitization technology between geology and the calculation analysis specialty by using the two-dimensional geological profile map commonly used in engineering, in particular to a method for converting the geological profile map commonly used in engineering into a slope two-dimensional calculation balance calculation model, which not only avoids the manual operation of referring to a geological section line during calculation modeling, but also improves the efficiency and quality of the link; and the information of the geological profile can be used for assisting in designing the calculation conditions and automatically generating the corresponding models, and a proper calculation method is intelligently recommended for each calculation model, so that the engineering quality is improved and the learning cost is reduced by using expert experience. More importantly, the invention realizes the fusion of a computer graphics (geological CAD) technology and a computing technology in the field of geological engineering, and solves the key link problem of the connection between geology and analysis of two professional directions.
The method can avoid repeated operation on geological section line information during calculation modeling, and realize auxiliary design of calculation conditions and intelligent recommendation of the calculation method by using the meaning of each geological object in the geological section. The information of the geological profile is used for guiding the correct calculation work in the mechanism, and the engineering practicability of the calculation result and the credit of the calculation analysis work in engineering practice are greatly improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A method of converting a geological profile into a limit balance calculation model, comprising the steps of:
s1: defining classification attributes of a calculation model range and a section line on a geological section map, wherein the classification attributes of the section line at least comprise terrain, stratum, fracture and underground water;
s2: the intersection and the closure among the landform, the stratum and the model boundary line of the geological profile are finished by adopting a graphic geometry algorithm to form a material partition model;
s3, generating three calculation conditions of nature, rainstorm and earthquake and corresponding models by using the classification attributes of each section line in the geological section map;
and S4, judging the type of the slope according to the geological conditions, and recommending a matched limit balance calculation method to the calculation model according to the type of the slope.
2. A method of converting a geological profile into a limit balance calculation model according to claim 1, wherein: step S2 specifically includes:
after the range of the two-dimensional limit balance calculation model is defined, whether two ends of a terrain line, a stratum line and an underground waterline in the sectional view are intersected with the defined model boundary or not is checked, and the model range is adjusted or the section line is lengthened when the two ends are not intersected;
optimizing the node density of the multi-segment line according to the default minimum line segment length, and removing repeated nodes or over-dense nodes;
and performing intersection operation by using the horizon, the terrain line and the model boundary to generate the boundary of the closed region, defining the geological attribute corresponding to each region, and completing material partition when the geological profile is converted into the calculation model to form a material partition model.
3. A method of converting a geological profile into a limit balance calculation model according to claim 1 or 2, characterized in that: the material partition model retains fracture and underground water; when a plurality of underground water lines exist in the section geological line, the hydrological meteorological conditions corresponding to each underground water line are defined in sequence, and the hydrological meteorological conditions comprise natural rainstorm and heavy storm.
4. A method of converting a geological profile into a limit balance calculation model according to claim 1, wherein: the difference between natural and heavy rain conditions is the choice of groundwater level: the earthquake working condition additionally considers the action of earthquake load according to the condition of natural working condition; under the natural working condition, a natural water line is adopted to participate in calculation; under the condition of heavy rain, the heavy rain bit line is adopted to participate in calculation, and under the condition of earthquake, the earthquake load is defined by a user to participate in calculation.
5. A method of converting a geological profile into a limit balance calculation model according to claim 1, wherein: step S1 is preceded by a geological profile preprocessing step, including: and (3) opening the geological profile file in the dwg format commonly used in the engineering industry by using corresponding software, and converting the geological profile file into a multi-segment line when the section line comprises a line type except the multi-segment line so as to finish the line type processing.
6. A method of converting a geological profile into a limit balance calculation model according to claim 1, wherein: step S3 further includes the steps of: and identifying a natural side slope and an artificial side slope according to the classification attribute of the section geological line, generating a natural side slope calculation model when the natural side slope is identified, and generating an artificial side slope calculation model and a natural side slope calculation model when the artificial side slope is identified.
7. A method of converting a geological profile into a limit balance calculation model according to claim 6, wherein: when the terrain does not contain the artificial slope, the terrain is judged to be a natural slope; when the terrain comprises the artificial side slope, the excavation side slope and the filling side slope are judged according to the specific type.
8. A method of converting a geological profile into a limit balance calculation model according to claim 1, wherein: step S4 specifically includes: corresponding to the unique geological condition in the defined model, defining the slope type as one of rock slope, soil slope and rock-soil mixture according to the geological condition, recommending a default calculation method, and when the slope type is the rock slope, recommending three calculation methods of MP, Sarma and residual thrust by default; when the type of the side slope is a soil slope, a Bishop method is adopted by default, and an arc-shaped sliding surface and automatic search are adopted for solving; when the slope type is a rock-soil mixed slope, a Bishop method is adopted for a soil layer, three calculation methods of MP, Sarma and residual thrust are adopted for a rock layer, and a rock-soil interface is set as a potential slip surface.
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| CN113223116A (en) * | 2021-05-17 | 2021-08-06 | 重庆地质矿产研究院 | Landslide geological model based on AutoCAD, construction method and evaluation method |
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| CN114238488A (en) * | 2022-02-24 | 2022-03-25 | 加华地学(武汉)数字技术有限公司 | Multi-professional digital fruit integration and data interaction method and system |
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