183 results about "Gravity dam" patented technology

The invention discloses a gravity dam safety risk management and control method and system based on a knowledge graph and a large model. The method comprises the following steps: collecting accident case data of a water conservancy project; performing entity and relationship extraction on all case data in the case library by using the fine-tuned model with domain knowledge to obtain a case data knowledge graph; the obtained case data knowledge graph is converted into natural language description, a text is used for fine tuning of a large language model, and finally a large language model with domain knowledge is obtained; performing information extraction on the engineering general situation information by using an engineering model, forming a natural language description problem by using an extraction result, and inputting the natural language description problem into a large language model with domain knowledge; the big language model answers the questions, and the expert judgment module provides expert opinions according to replies of the big language model. The intelligent system integrating artificial intelligence, reasoning and decision making is formed by utilizing the powerful language and reasoning ability of a large model.

The invention discloses a monitoring and simulation mutual feedback correction concrete dam structure parameter intelligent identification method, and belongs to the technical field of dam safety monitoring, and the method comprises the steps: S1, building a finite element model, and generating a parameter set X through LHS; s2, calculating a water pressure component to obtain a data set Y, and normalizing a sample S = [X, Y]; s3, dividing the training set and the test set according to a ratio of 4: 1, and training a CBLA model; s4, the HST is used for separating the water pressure component, and ICPKO is combined with CBLA for optimization; and S5, iteratively terminating the output of the optimal parameter, and performing finite element verification. According to the concrete dam structure parameter intelligent identification method based on monitoring and simulation mutual feedback correction, the problem that a traditional algorithm is prone to being caught in local optimum is solved, the efficiency and precision of gravity dam structure mechanical parameter feedback are improved, the optimal combination of deformation moduli of a dam body and all partitions of a dam foundation meeting the actual situation is successfully inverted, and the method is suitable for popularization and application. And a new technical means is provided for structural response analysis of the gravity dam in the operation period.

The invention discloses a simulation method for evaluating damage of a concrete gravity dam under the action of an explosion load. The simulation method comprises the following steps: establishing geometric models of the concrete gravity dam, water and explosives, performing grid division on the geometric models, and dispersing units into particles to obtain a discretization model; giving material parameters, boundary conditions and contact to the discretization model, and setting a detonation point position and a detonation mode; coupling effects between the explosive and water, between the water and the concrete gravity dam and between the explosive and the concrete gravity dam are set; key information is initialized; a fluid-structure interaction force is calculated by adopting an asynchronous solution IHPD-SPH coupling method; an SPH solver is adopted to update the speed and density information of the fluid; an IHPD solver is adopted to update internal force and acceleration information of the solid; checking whether the calculation duration is met or not, and if yes, ending calculation; if not, recalculating the fluid-solid coupling force according to the currently obtained particle state; and obtaining a dam damage result, and performing damage grade evaluation.

The present application belongs to the technical field of mass concrete construction, and aims to solve the problem of high thermal resistance and slow heat dissipation of traditional cooling pipe laminar bottom layer, and discloses a gravity dam construction cooling water pipe based on destruction of laminar bottom layer and a method thereof. The cooling water pipe comprises a plurality of series water pipe units, each water pipe unit comprises a steel pipe, a flexible spring hose is arranged in the steel pipe, and the spring hose forms a spiral protruding turbulence structure along the inner wall of the steel pipe; the hose is fixed by pointwise anchoring and outer wall surface bonding with glue, and a ring is arranged at both ends for limiting and assisting turbulence. The present application breaks through the thermal resistance of laminar bottom layer, greatly improves the hydration heat conduction efficiency, is convenient to construct and has durable structure, and is suitable for mass concrete temperature control requirements.

The invention provides a composite protection structure suitable for underwater seepage prevention and explosion prevention of a concrete gravity dam and a preparation and construction method, and belongs to the technical field of engineering explosion prevention and seepage prevention. The composite protection structure comprises a reinforced concrete slab anchored on the outer surface of the gravity dam by a certain distance through an anchor rod; a reserved interlayer between the reinforced concrete slab and the outer surface of the gravity dam is filled to form an anti-seepage and anti-explosion composite layer; the anti-seepage and anti-explosion composite layer is formed by pouring hollow glass bead-asphalt concrete, and the hollow glass bead-asphalt concrete is prepared from asphalt concrete with modified hollow glass beads as filler; the modified hollow glass beads account for more than 15% of the asphalt concrete by volume, and the asphalt concrete has enough sealing gas for reflecting explosive shock waves and has the characteristics of seepage prevention and energy dissipation. The composite protection structure has anti-seepage and anti-explosion functions, the service life of the dam is prolonged, and the ability of the dam to resist sudden extreme working conditions is improved.

The invention belongs to the technical field of gravity dam construction, and provides an assembled concrete cooling pipe structure and method for gravity dam construction. The cooling pipe is composed of a plurality of pipe body units connected in series, and lining pieces are arranged in metal pipes of the pipe body units. The lining piece and the elastic steel sheets form a criss-cross cage type structure through the strip-shaped plates, the strip-shaped plates are provided with pitted surfaces and notches, the steel sheets can stretch out and draw back to achieve variable-diameter adjustment, and water flow can be forced to generate turbulent flow to damage the laminar flow bottom layer. The method comprises the steps of raw material pretreatment, notch and pitted surface machining, lining piece assembling, metal pipe assembling and fixing and pipe body unit series connection. The structure is stable, manufacturing is convenient, boundary layer thermal resistance can be reduced, heat transfer efficiency is improved, concrete temperature cracks are reduced, and the gravity dam construction requirement is met.

The invention provides a gravity dam earthquake response analysis method, system, equipment and medium, and belongs to the technical field of earthquake response analys.The method comprises the following steps that a solid artificial boundary and a fluid artificial boundary of gravity dam foundation reservoir water are set, and a gravity dam foundation reservoir water finite element model is constructed; constructing an artificial boundary substructure model through solid artificial boundary nodes, fluid artificial boundary nodes and nodes adjacent to the solid artificial boundary nodes and the fluid artificial boundary nodes; a reservoir water-foundation free wave field displacement time history is applied to all fluid artificial boundary nodes and solid artificial boundary nodes on the upstream side of the artificial boundary substructure model, and a solid foundation free wave field displacement time history is applied to all solid artificial boundary nodes on the downstream side of the artificial boundary substructure model; performing dynamic analysis on the artificial boundary substructure model to obtain an equivalent input seismic load; and inputting the equivalent input earthquake load into the gravity dam foundation reservoir water finite element model, and carrying out earthquake response analysis. The gravity dam earthquake dynamic response analysis is more accurate.

The invention discloses a quantitative evaluation method for the ultimate seismic capacity of a gravity dam. The quantitative evaluation method comprises the steps that S1, a gravity dam-foundation system finite element analysis model considering strength and stable damage at the same time is constructed; s2, scaling a design earthquake to different earthquake intensity levels by adopting an incremental dynamic analysis method; s3, carrying out multiple groups of nonlinear dynamic response analysis to obtain a strong shock response result of the gravity dam-foundation system; s4, based on the response result, constructing an evaluation index for representing the anti-seismic performance of the gravity dam-foundation system; and S5, constructing a broken line graph in which different performance evaluation indexes change along with different zoom coefficients, and determining the ultimate seismic capacity of the gravity dam according to the zoom coefficient corresponding to the maximum slope in the broken line graph. According to the method, gravity dam-foundation system anti-seismic safety evaluation is developed from a single failure mode and a single index to comprehensive consideration of multiple failure modes and multiple evaluation indexes, the synergistic effect of multiple failure mechanisms in actual engineering is reflected, and a theoretical basis is provided for anti-seismic safety evaluation and risk management.

The invention discloses an open-web gravity dam deformation prediction and mechanism interpretation method, system, equipment and medium, and belongs to the technical field of dam and hydraulic structure health monitoring and state evaluation. Constructing the preprocessed monitoring data into corresponding feature vectors, dividing a time sequence data set, and performing XGBoost model training and hyper-parameter optimization to obtain a prediction model; calculating a corresponding SHAP value, and screening a key factor as an independent variable for model analysis; and selecting a control index to evaluate the performance of the model, and deploying the model to a dam safety monitoring system after verification so as to carry out real-time prediction and early warning. According to the method, while high-precision deformation prediction of the open-web gravity dam is realized, quantifiable mechanism explanation of the prediction result is provided, so that transparent and reliable decision support is provided for safety monitoring and early warning of the dam.

The invention discloses an in-situ shear test device and method for a new and old concrete junction surface of a gravity dam heightening project. The in-situ shear test device comprises a test platform, a shear loading groove, an L-shaped test block, a flexible shear plate, a shear loading device and a normal loading device, the shear loading groove is formed in the slope surface of the old concrete dam above the test platform; the transverse part of the L-shaped test block is embedded into the shear loading groove, and a flexible shear plate is arranged between the transverse part and the shear loading groove; the vertical part and the slope surface of the old concrete dam form a new and old concrete combination surface; the centroid of the L-shaped test block is positioned on a new and old concrete combination surface; a shear force application axis of the shear loading device is positioned on a new and old concrete junction surface coincidence; and the normal loading device is mounted on the outer side surface of the vertical part of the L-shaped test block and can apply a vertical normal force to the new and old concrete combination surface. The real interface working condition is constructed through the L-shaped test block, the embedded anchoring system and the two-way cooperative loading technology are combined, the problem of construction of the counter force of the inclined dam face is solved, and actually measured data support is provided for anti-sliding stable design of the high-gradient dam body.

The invention discloses a gravity dam safety risk management and control method based on a knowledge graph and a large model, and the method comprises the steps: constructing a gravity dam safety risk space-time knowledge graph which comprises an entity layer, a relation layer, an attribute layer and a time-space mapping layer, and achieving the full-life-cycle multi-source data structured association; constructing a knowledge enhanced large model, and embedding the space-time knowledge graph into a reasoning process; real-time and historical data of the gravity dam are collected and preprocessed, and the large model is input; calling a map association relationship and an evolution rule through a large model to complete risk anomaly identification, cause positioning and evaluation; historical cases and industry specifications in the atlas are retrieved, and a management and control decision scheme matched with the current working condition is generated; and collecting scheme execution data, extracting new knowledge and updating the graph. According to the invention, a closed-loop management and control mode is constructed, and the intelligent and refined level of risk management and control is improved.

The invention relates to the technical field of dam safety, in particular to a reservoir dam leakage monitoring method and system and a medium. Calculating leakage risk weights and comparing the leakage risk weights with a preset threshold value to obtain leakage data acquisition points; real-time leakage abnormal indexes are calculated according to the leakage data of the collection points, comprehensive leakage abnormal indexes are obtained by combining the real-time leakage abnormal indexes of the multiple time nodes, and a leakage abnormal index function is further obtained; if the function value is greater than a preset leakage abnormity index threshold value, dividing the coordinate points corresponding to the function value into leakage risk areas; auxiliary data are obtained, whether the leakage risk area is a leakage area or not is judged, and if the leakage risk area is the leakage area, early warning is carried out; and finally, establishing a visual platform to display data related to the leakage problem of the gravity dam. By designing the leakage risk weight and the comprehensive leakage abnormal index, the real-time monitoring efficiency of the leakage problem of the gravity dam is improved.

The embodiment of the invention provides a CLA-based earthquake vulnerability model construction method and device, equipment and a medium, and the method comprises the steps: analyzing an earthquake intensity parameter in historical engineering dynamic response parameters and a corresponding engineering demand parameter, and determining a first relation between the two parameters; based on the historical engineering dynamic response parameters, probability anti-seismic demand analysis is carried out, and a second relation between the change values of the engineering demand parameters and the change values of the corresponding seismic intensity parameters is determined; and based on the first relationship and the second relationship, determining an earthquake vulnerability function corresponding to the engineering demand parameter as an earthquake vulnerability model. According to the invention, a scientific and rigorous gravity dam earthquake vulnerability model can be constructed.

The invention relates to the technical field of data processing, in particular to a concrete gravity dam operation period safety risk value calculation method and system.The method comprises the steps that structure monitoring data, environment data and operation data of a dam body in the operation period are continuously collected through a safety monitoring system; carrying out preprocessing and standardization, coordinate conversion and risk feature extraction on the collected data, and obtaining fusion state data through data fusion processing; constructing a dam body operation environment parameter set according to the environment data, and calculating a safety risk value by using a deep belief network model in combination with the environment parameter set and the fusion state data; and dividing risk levels according to the security risk values and outputting early warning information. According to the method, dynamic quantitative evaluation of the safety risk of the concrete gravity dam in the operation period is realized through multi-source data fusion and a deep learning technology, and a scientific basis is provided for dam body safety management and risk early warning.

The utility model belongs to the technical field of hydraulic engineering, and relates to a concrete gravity dam structure suitable for Xigeda stratum.The concrete gravity dam structure comprises a dam body, a cushion layer, a main tooth wall, an auxiliary tooth wall and an anti-seepage wall which are all made of concrete in a pouring mode, the anti-seepage wall is buried in the stratum, the longitudinal section of the main tooth wall is in an inverted trapezoid shape, and the bottom face of the main tooth wall is connected to the anti-seepage wall; the at least one auxiliary tooth wall is arranged in the direction from the upstream to the downstream, and a gap is formed between the auxiliary tooth wall and the main tooth wall; the dam body is arranged on the cushion layer, and the longitudinal section of the dam body is triangular; a back pressure platform is further arranged on the cushion layer and connected to the dam body, and a drainage ditch is arranged at the joint of the back pressure platform and the dam body. A first drainage hole is further formed in the dam body, a second drainage hole is formed in the back pressure platform, and the first drainage hole is communicated with the second drainage hole. Therefore, the technical problem that in the prior art, a concrete gravity dam is difficult to construct under the soft foundation condition of the Xigeda stratum is solved.

The invention discloses a reservoir water fluctuation propagation direct numerical simulation method and device in gravity dam anti-seismic analysis, a medium and equipment. According to the method, fluctuation propagation in reservoir water under combined incidence of P waves and SV waves is considered, a reservoir water-foundation site free field is analyzed and calculated on the basis of the fluctuation theory and the potential function theory, then the site free field is converted into node counterforce on fluid and solid boundaries on the basis of a fluid and solid power artificial boundary substructure model, and the reservoir water-foundation site free field is obtained. Applying node counterforce on the reservoir water-foundation artificial boundary, and directly performing numerical simulation on reservoir water-foundation site free field response; based on a static-dynamic artificial boundary conversion method, considering the influence of the static effect of the gravity dam-reservoir water-foundation system on the dynamic effect of the system, and constructing a gravity dam seismic oscillation input model for directly simulating reservoir water fluctuation propagation; according to the method, the anti-seismic analysis precision of the gravity dam is improved, and the limitations of single-wave incidence during reservoir water fluctuation propagation simulation, failure to consider the static effect and the like are overcome.

The invention discloses an online monitoring method, device and system for horizontal displacement of a roller-compacted concrete gravity dam and a computer program product, and relates to the field of hydropower stations, and the online monitoring method for the horizontal displacement of the roller-compacted concrete gravity dam comprises the steps that collection data of a plurality of monitoring points are obtained, the plurality of monitoring points are arranged on the surface of the roller compacted concrete gravity dam, a preset spacing distance is formed between every two adjacent monitoring points, each monitoring point comprises a displacement acquisition camera and a target spot, and the displacement acquisition camera is used for performing horizontal displacement data acquisition on the target spot of the adjacent monitoring point of each monitoring point; and the horizontal displacement state of the roller compacted concrete gravity dam is determined according to the collected data. By adopting the technical scheme, the problem of how to accurately and efficiently monitor the horizontal displacement of the roller compacted concrete gravity dam is solved.

The invention discloses a gravity dam structure defect identification method based on a knowledge graph, and the method comprises the steps: constructing a gravity dam structure defect knowledge graph based on a gravity dam structure defect-monitoring representation coupling mechanism; extracting abnormal data in the working feedback data of the gravity dam, performing standardized fusion processing on the abnormal data, and then accessing the abnormal data into the gravity dam structure defect knowledge graph; performing forward causal propagation and reverse traceability propagation in the gravity dam structure defect knowledge graph accessed with the abnormal data, and determining a defect forward evolution link and a defect reverse traceability link; and introducing an attenuation factor to carry out path weight reconstruction on the defect forward evolution link and the defect reverse traceability link, carrying out path screening according to the reconstructed total weight, and taking the screened path as a gravity dam structure defect identification basis. According to the method, the incompleteness of empirical knowledge based on historical cases and numerical analysis is effectively compatible, the uncertainty of an actual physical process is reflected, and the dynamic evaluation of the multi-defect co-evolution path is realized.

The invention provides a gravity dam crack control construction device and process based on strain gradient construction, and belongs to the technical field of gravity dams. The construction device comprises an outer pipe assembly and an inner pipe assembly used in cooperation with the outer pipe assembly. The technology comprises the steps of S1, construction preparation, S2, foundation treatment, S3, formwork steel bar installation, S4, outer pipe assembly installation, S5, concrete pouring, S6, hole cavity construction, S7, inner pipe assembly positioning and installation, S8, outer layer stress absorbing material filling, S9, inner pipe assembly pipe drawing and S10. And filling an inner-layer stress absorbing material to construct a concentric circle type strain gradient structure. A traditional'strong constraint 'anti-cracking thought is broken through, an active anti-cracking mode of'stress absorption + gradient buffering' is turned, two layers of materials can more uniformly share loads through a gradient conduction mechanism, the overall energy consumption efficiency is improved, the anti-cracking effect is more remarkable, the structural durability is enhanced, and the method is particularly suitable for construction of high dams and gravity dams under complex geological conditions and has a wide application prospect. And the method has obvious engineering application value.

The invention discloses a concrete gravity dam structure with a cavity and a construction method thereof, and belongs to the technical field of water conservancy and hydropower engineering. The structure comprises a dam body, an anti-sliding structure, a weight reduction cavity and a gallery structure. The dam body is composed of a dam foundation arranged in the rock mass and a dam body poured on the dam foundation. The anti-sliding structure is a concrete anti-sliding plug which is formed at the bottom of the dam foundation and embedded into the bedrock. The weight reduction cavity is formed in the dam body in the axis direction of the dam. The gallery structure comprises a plurality of galleries arranged along the axis of the dam, a dam foundation grouting curtain is arranged at the bottom of the upstream gallery, and drainage structures are arranged in the galleries. By arranging the cavity in the dam and the steep dam slope, the using amount of concrete can be obviously reduced; an anti-sliding plug is used for providing passive anti-sliding force instead of resisting sliding force through dam foundation anti-sliding force generated between the self weight of a common gravity dam and a dam foundation rock mass, and meanwhile, a pre-stressed anchor cable constructed from a corridor is used for actively reinforcing and adjusting pre-tightening force so as to regulate and control dam foundation stress, so that the requirement of the dam foundation stress is met; seepage is controlled by combining a curtain and a drainage system. On the premise that the safety and stability of the dam body are guaranteed, the construction cost is effectively reduced, and remarkable economical efficiency and technical advantages are achieved.

The invention provides a gravity dam post-earthquake evaluation method which comprises the following steps: setting monitoring points at key parts of a gravity dam, and monitoring response parameters of each part during an earthquake; respectively carrying out one-dimensional, two-dimensional and three-dimensional finite element dynamic analysis on the key part of the gravity dam, and calculating seismic responses in preset different levels of seismic safety states; and after an earthquake occurs, comparing the parameters obtained by the monitoring points with the calculated earthquake responses in different levels of earthquake-proof safety states, determining which level the earthquake is in, and further determining the post-earthquake safety level of the gravity dam. According to the method, whether the dam structure has earthquake damage or not and the current safety degree of the dam can be rapidly analyzed and judged through the strong vibration response data of the strong vibration monitoring points on the dam structure after an earthquake, and whether emergency measures are taken or not is determined according to the analysis result.

The present invention discloses a tailings dam constructed with the aid of mining waste rock and a construction method thereof. The flood diversion dam includes a gravity dam body cast with rubble stone concrete and a back-pressure platform. The back-pressure platform is filled with mining waste rock. The back-pressure platform is constructed on the downstream side of the gravity dam body, and the back-pressure platform is arranged in contact with the inclined surface of the downstream side of the gravity dam body. The back-pressure platform spanning the entire riverbed of the present invention can significantly improve the overall stability and safety of the flood diversion dam, effectively control the uneven settlement caused by the gravity dam on the weak covering layer foundation, greatly reduce the risk of dam body cracking, and prevent the gravity dam covering layer foundation from deep shear overall instability and damage. The platform filling construction of the present invention keeps rising synchronously with the gravity dam body, and the back-pressure platform is used to build the access road to the warehouse during the construction period, which effectively solves the problem of transporting tens of thousands of cubic meters of rubble stone into the warehouse during the gradual casting and rising process of the rubble stone concrete gravity dam.

The invention provides a gravity dam anti-seismic capacity analysis method considering an anti-seismic reinforcement reinforcement effect. The gravity dam anti-seismic capacity analysis method comprises the steps that a gravity dam cross-joint reinforcement reinforcement model is constructed; the gravity dam joint-crossing reinforcing steel bar model comprises a dam body concrete structure, a crack structure and reinforcing steel bars penetrating through the crack structure to be reinforced. Determining the optimal value of the physical and mechanical parameters of the dam body concrete structure by using an inverse analysis method and combining an iterative optimization algorithm; the optimal values of the physical and mechanical parameters of the dam body concrete structure serve as initial parameters of the gravity dam cross-joint reinforcing steel bar model; and seismic acceleration is applied to the gravity dam joint-crossing reinforcing steel bar model, the multiple of the seismic acceleration is gradually increased, and anti-seismic simulation analysis is carried out. According to the gravity dam anti-seismic capacity analysis method considering the anti-seismic reinforcement reinforcement effect, the anti-seismic capacity of the gravity dam with cracks after anti-seismic reinforcement reinforcement can be accurately analyzed.

The invention belongs to the technical field of gravity dam topographic survey, and particularly relates to topographic survey equipment for concrete gravity dam modeling, which comprises a survey main body, a driving assembly arranged on the survey main body, a signal enhancement type earth surface pretreatment mechanism and a gravity compensation type self-adjusting survey mechanism, the signal enhanced earth surface preprocessing mechanism is arranged on one side of the lower end of the surveying main body, and the gravity compensation type self-adjusting surveying mechanism is arranged on the other side of the lower end of the surveying main body; according to the topographic survey equipment for concrete gravity dam modeling, signal attenuation and vegetation, especially vegetation containing a large amount of water, can be reduced through the signal enhancement type earth surface preprocessing mechanism, electromagnetic waves of a geological radar can be absorbed and attenuated, after the vegetation is cleaned, signal attenuation can be reduced, the penetration depth of radar signals can be increased, and therefore the effect of modeling of the concrete gravity dam is achieved. Therefore, the underground structure can be better detected.

This invention belongs to the field of hydraulic structure analysis technology, specifically disclosing a gravity dam coupling analysis method, system, electronic equipment, and storage medium, including: models describing water flow in concrete, the relationship between water pressure and stress, the dissolution reaction process, and the coupling of ion diffusion with water flow. By acquiring influencing variables, parameters of each model are correlated, and a solubility function considering performance parameters is established and dynamically updated. The solubility function is iteratively trained using experimental data to construct a finite element model, and simulations are performed based on the trained function. Early warnings are generated based on the simulation results to predict the concrete deterioration process and optimize maintenance decisions. It has the following advantages: by coupling multiple models such as water flow, chemical dissolution, and hydraulic fracturing, the long-term deterioration process of concrete under the action of water flow and dissolution is accurately simulated. The introduction of a solubility function and dynamic updating of material parameters, considering time-varying deterioration effects, comprehensively improves the accuracy of deterioration prediction and simulation results.

The utility model relates to the technical field of structures for building gravity dams, in particular to a structure for building a gravity dam on a deep covering layer. The anti-seepage wall comprises an anti-seepage wall body, a supporting column is arranged at the left end of the anti-seepage wall body, dense soil bodies are arranged on the two sides of the supporting column, a pre-fixing assembly is arranged at the right end of the anti-seepage wall body, the pre-fixing assembly comprises a waterproof plate arranged at the right end of the anti-seepage wall body, and the waterproof plate is a plastic plate. One side of the waterproof plate is fixedly connected with a fixing column, when the pre-fixing assembly is arranged and the waterproof plate needs to be pre-fixed, a worker drags the waterproof plate, so that the fixing column is clamped into the fixing groove, the fixing groove is in contact with the sliding surface, the plug pin shrinks, and after the fixing column is completely clamped into the fixing groove, the plug pin is clamped into the clamping groove through a reset mechanism; and then, the waterproof plate and the diaphragm wall are fixed through nails, so that the effect that the situation that the waterproof plate needs to be supported by a person to be nailed into the diaphragm wall is avoided as far as possible.

The present invention belongs to the technical field of concrete engineering monitoring, and specifically discloses a monitoring system for the treatment of the bedding plane of a roller-compacted concrete gravity dam, including a data acquisition module for acquiring surface image information and internal cross-section image information; a data processing module for processing the surface image information and the internal cross-section image information; a three-dimensional construction module for constructing a virtual scene of the gravity dam, a virtual roller-compacted concrete layer, and a 3D model; a coordinate conversion module for converting three-dimensional coordinates into GPS coordinates; and a data analysis module for real-time regulating the concrete discharging point positions and the bedding strategies based on the parameter information of the previous roller-compacted concrete layer. The present invention anticipates problems in advance, provides positive guidance for the construction process, and by timely discovering and solving quality problems in the construction process, it avoids rework and repair costs caused by unqualified quality, and reduces the cost of the entire gravity dam construction.

The layered water taking system based on the gravity dam comprises a vertical shaft, three vertical shaft type water taking openings are sequentially formed in one side of the upstream of the vertical shaft, the three vertical shaft type water taking openings are arranged according to the dead water level and the normal water storage level elevation of a reservoir, and the three vertical shaft type water taking openings are each provided with an overhauling mechanism. The layered water taking system based on the gravity dam solves the problems that an existing conventional maintenance system of the gravity dam depends on a single valve form, when a valve breaks down, a reservoir needs to be emptied for maintenance, and water taking continuity is seriously affected, and later maintenance is facilitated.

The invention belongs to the technical field of gravity dam stress detection, and particularly relates to stress detection equipment for a concrete gravity dam, which comprises a detection main body, an auxiliary cleaning assembly arranged on the detection main body, a movable fitting type ultrasonic stress detection mechanism and a dry type dam body surface leveling mechanism, the movable fitting type ultrasonic stress detection mechanism is arranged at the lower end of the detection main body, the dry type dam body surface leveling mechanism is arranged at the lower end of the detection main body, and the dry type dam body surface leveling mechanism is arranged on one side of the movable fitting type ultrasonic stress detection mechanism; according to the stress detection equipment for the concrete gravity dam provided by the invention, the surface of the dam body is firstly flattened and cleaned through the drying type dam body surface flattening mechanism, and then a colloid coupling agent is smeared, so that a uniform and compact contact layer between the ultrasonic detection head and the dam body is ensured, and the stress detection precision is improved.

The invention discloses a segmented quantitative analysis method for uplift pressure of a gravity dam. The uplift pressure of the gravity dam is influenced by various factors, and safety monitoring data of the gravity dam often have the problems of multiple collinearity and small samples. The method comprises the following steps: introducing a BFAST time sequence decomposition method, decomposing original uplift pressure monitoring data into a trend component and a seasonal component, and obtaining trend segment points and seasonal segment points; a Bayesian model average modeling method integrating Bayesian model selection is introduced, and a gravity dam uplift pressure statistical model is established in a segmented mode; and finally, upstream and downstream water pressure components of the uplift pressure are separated according to the average multiple models, and quantitative analysis of the uplift pressure of the gravity dam is achieved. According to the method, more accurate fitting and component separation effects can be obtained, and accurate quantitative analysis of the uplift pressure of the gravity dam can be realized.