134 results about "Stability coefficient" patented technology

The invention relates to the technical field of mine safety monitoring, and discloses a roadway surrounding rock stability evaluation method, which comprises the following steps: step 1, collecting roadway surrounding rock geological data, step 2, constructing a three-dimensional geomechanical model, step 3, inverting mechanical parameters, step 4, calculating a stability coefficient, and step 5, outputting an evaluation result. According to the method, rock mass types, structural plane occurrence, crustal stress vectors and permeability parameters are integrally collected through geological radar scanning, drilling coring and crustal stress measuring devices, the problem of model distortion caused by single data in a traditional method is solved, deformation of a stress concentration area is accurately captured by adopting a non-uniform grid division strategy, inversion mechanical parameters are combined, and the method is suitable for large-scale popularization and application. The network is trained by using in-situ direct shear and triaxial test data, the inversion efficiency is improved compared with manual trial and error, the whole surrounding rock fracture process is simulated based on a finite element-discrete element coupling algorithm, plastic zone distribution and a comprehensive index S are output, and automatic judgment of the stability level is realized.

The invention relates to the technical field of geological disaster monitoring, and discloses a landslide dynamic simulation monitoring and early warning method based on multi-source sensing fusion, and the method comprises the steps: collecting multi-source data of a landslide body through a plurality of heterogeneous sensors, and enabling the multi-source data to be in space-time alignment after preprocessing; building a multi-parameter fusion model fusing a displacement field, a mechanical field and an environment field based on the preprocessed data, enabling the multi-parameter fusion model to output a deformation rate and a stability coefficient, and dynamically adjusting the weights of the displacement field, the mechanical field and the environment field according to a landslide evolution stage; predicting a future deformation trend of the landslide mass in combination with a geological structure and historical data, comparing a stability coefficient with a dynamic safety threshold to judge a risk level, and generating early warning information; and dynamically correcting a reference weight coefficient in the model based on the deviation between the monitoring data and the model output, so that the model is adaptively optimized. The problems of single monitoring dimension and static model solidification in the prior art are solved, and accurate and adaptive monitoring and early warning of the risk state of the landslide mass are realized.

The invention discloses a stiff skeleton arch bridge arching process optimization method and system considering multiple objectives, and belongs to the technical field of bridge construction.The method includes the steps that a stiff skeleton arch bridge main arch ring finite element model is established, design variables and optimization objectives are analyzed and determined, and a multi-objective optimization model is established; minimization of instantaneous stress and permanent stress of a main arch ring of the stiff skeleton arch bridge and minimization of vertical deformation of a vault are used as objective functions, the length of a working face is used as a design variable, and constraint conditions are set. After an initial pouring scheme is determined based on an actual construction scheme, an optimization scheme is solved by adopting an NSGA-II algorithm. And further constructing quantitative evaluation indexes including a comprehensive stability coefficient and a stability coefficient variance, constructing a comprehensive evaluation index based on the quantitative evaluation indexes, and finally determining an optimal pouring scheme. The arch forming quality and the structural safety of the arch bridge can be effectively improved, the construction scheme is optimized, the construction cost is reduced, and important engineering application value is achieved.

The invention provides a high-position rock landslide starting identification method and device under the earthquake action, and relates to the technical field of rock mechanics, and the method comprises the steps: S1, building a high and steep slope numerical model through an exploration data set; s2, applying a strong shock load to the bottom of the high and steep slope numerical model to obtain a velocity field and a stress field of the high and steep slope numerical model; s3, carrying out earthquake fracturing mechanism analysis on the velocity field and the stress field, and constructing a high-position rock mass fracture network; s4, dynamically retrieving a closed loop in the high-position rock mass fracture network, if not, returning to the step S3, and otherwise, entering the step S5; s5, carrying out high-position rock mass sliding stability analysis on the potential instability area defined by the closed loop under the action of strong shock, and calculating to obtain a dynamic stability coefficient; and if the dynamic stability coefficient is greater than a preset value, judging that the high-position rock mass landslide is started, otherwise, returning to the step S3. The method systematically understands the starting condition of the earthquake-induced high-position rock landslide from the perspective of mathematical mechanics, so that the prediction of the high-position rock landslide is more accurate.

The invention relates to the technical field of slope instability data analysis, and discloses a toppling deformation body forming process and fracture development mode analysis method and system.The method comprises the steps that a toppling deformation physical model is constructed according to geographic data, and deformation characteristics of an anti-tilting rock slope under different working conditions are simulated; building a rock stratum fracture development prediction model based on the dumping deformation physical model, inputting a simulation result into the rock stratum fracture development prediction model, and predicting rock stratum dumping deformation bodies and fracture development under different climate conditions; analyzing the prediction result to obtain a fracture development mode; carrying out stability partitioning on the toppling deformation body based on a fracture development mode, and evaluating a stability coefficient; and evaluating the stability coefficient and the real-time monitoring data, and adjusting the rock stratum fracture development prediction model according to an evaluation result. The system comprises a rock stratum data collection module, a prediction simulation module and a prediction result analysis module. According to the invention, the precision of evaluating the stability of the counter-tilting rock slope is improved.

The invention provides a three-dimensional visual full-field monitoring method and system for the whole process of bridge rotation, and relates to the technical field of bridge monitoring, and the method comprises the steps: obtaining design parameters and a construction plan of a bridge; generating a dynamic BIM bridge model according to the design parameters and the construction plan; setting a virtual sampling point at the virtual swivel key position of the dynamic BIM bridge model, and setting an actual sampling point at the swivel key position of the swivel bridge; acquiring actual coordinate information of the actual sampling point in a preset coordinate system, and determining virtual coordinate information of the virtual sampling point in the preset coordinate system; obtaining construction environment data of the construction site; determining a construction safety coefficient according to the construction environment data, the construction plan, the actual coordinate information and the virtual coordinate information; acquiring working data of the hydraulic system; determining a stability coefficient of the hydraulic system; and determining a full-field monitoring report. According to the invention, the real-time performance and comprehensiveness of bridge rotation whole-process monitoring can be improved.

The invention discloses a BIM-based bridge construction safety risk dynamic early warning method and system. The method comprises the steps of generating a time-varying structure topological graph sequence; forming a key risk component set based on the time-varying structure topological graph sequence and construction monitoring data collected in real time; constructing a local stress evolution model, and predicting a stress state and a stability coefficient of each component; calculating the risk coupling strength among the components based on the predicted stability coefficient of each component; simulating the failure linkage effect of each component, and calculating the dynamic instability probability of the bridge; and setting early warning threshold values of different grades, triggering bridge instability early warning of the corresponding grade according to the dynamic instability probability, and generating an optimization control strategy. The system comprises a time-varying topology generation module, a risk component identification module, a stress evolution prediction module, a coupling strength calculation module, an instability probability calculation module and an early warning strategy generation module. The problem of safety management of traditional bridge construction is solved, and reliable technical support is provided for bridge construction safety.

The invention relates to the technical field of side slope building, in particular to a side slope anchor rod retaining wall structure optimization analysis method, which comprises the following steps: a geological data acquisition step: acquiring geological data of a preset reinforcing area of a side slope according to a multi-source data acquisition strategy, and synchronously acquiring deformation monitoring data of each section of the side slope; a structural model construction step: constructing a three-dimensional coupling model of the side slope and the anchor rod retaining wall according to the geological data; a stability evaluation step of performing analysis according to the three-dimensional coupling model and the deformation monitoring data to determine an anti-sliding stability coefficient, an anti-overturning stability coefficient and a key risk area of each section of the slope, and constructing a three-dimensional safety evaluation space; and an optimization scheme generation step: generating an anchor rod retaining wall optimization parameter combination according to the key risk area and the three-dimensional safety assessment space, and screening out an optimal optimization scheme. The method has the advantages that the design optimization efficiency of the anchor rod retaining wall structure can be improved, and the overall slope retaining wall design construction period is shortened.

The invention relates to the technical field of steel structure assessment, and discloses a steel structure connection risk assessment system and method based on industrial data analysis, and the system comprises a multi-dimensional collection module and an intelligent analysis module. According to the steel structure connection risk assessment system and method based on industrial data analysis, management data of all components of a steel structure, inspection data of all joints and sensing data of all environmental factors are acquired through a multi-dimensional acquisition module and are classified to form a data set, and an intelligent analysis module analyzes the assemblability of each component and generates a performance index; the weight distribution proportion can be adjusted according to actual engineering requirements, multi-dimensional analysis is flexible and high in applicability, and an intelligent analysis module analyzes the erosion effect of environmental factors on the performance of the steel structure, generates attenuation coefficients, sets threshold values in a fixed range and evaluates whether the steel structure has potential risks or not; and targeted suggestions are provided, preventive maintenance is realized, and the intelligent evaluation precision is high.

The invention relates to the technical field of road engineering, in particular to a detection method for evaluating cohesion characteristics of river-crossing shield tunnel waste slag improved soil for roadbed filling, which comprises the following steps: preparing a solidified soil sample; calculating coupling parameters; obtaining a static cohesion force and a dynamic cohesion force; obtaining a water stability coefficient; based on the collected roadbed filling characteristic parameters, the static cohesion, the dynamic cohesion and the water stability coefficient, constructing a dynamic resilience modulus correlation model; grading the cohesion characteristics of the solidified shield soil according to the coupling parameters and the dynamic rebound modulus; detecting actual values of the coupling parameters and the dynamic resilience modulus of the to-be-evaluated solidified soil, and determining the grade of the to-be-evaluated solidified soil; according to the cohesion characteristic detection method, the characteristics of shield tunnel soil particles, mineral composition and roadbed filling scenes are fitted, actual working conditions are simulated, and the solidification effect is quantified, so that a scientific basis is provided for engineering application of shield tunnel soil solidification improved roadbed, and the problems in the background technology are effectively solved.

The invention relates to the technical field of rock-soil section analysis, in particular to a side slope section stability analysis system, which comprises a side slope segmentation module configured with a section segmentation strategy, constructing a virtual three-dimensional side slope model by performing geological contour scanning on a side slope, and analyzing the virtual three-dimensional side slope model to generate a plurality of characteristic sections; the multi-model analysis module is configured with an analysis model library, a plurality of slope space analysis models are stored in the analysis model library, and the multi-model analysis module is used for analyzing the structural surface of the feature section to determine a corresponding rock mass structure model; the working condition correction module is configured with a slope working condition parameter library and is used for establishing a parameter mapping relation with the corresponding characteristic section; and the stability coefficient calculation module is configured with a safety coefficient analysis model, and performs calculation and analysis according to the rock mass structure model and the slope working condition parameter library so as to determine slope stability coefficients of corresponding characteristic sections under different working conditions. The method has the effect that the accuracy and comprehensiveness of slope section stability analysis are improved.

The invention discloses a stiff skeleton arch bridge main arch ring construction scheme evaluation method based on a comprehensive stability coefficient, and relates to the technical field of bridge construction, and the method comprises the steps: obtaining a non-dominated solution set of a construction scheme based on a multi-objective optimization algorithm; respectively determining evaluation indexes from the aspects of structural stability, objective function stability, solution robustness, dynamic adaptability and life cycle cost, and constructing a comprehensive stability coefficient evaluation system; performing standardization processing on each evaluation index, and determining the comprehensive weight of each evaluation index by combining subjective weighting and objective weighting methods; performing weighted summation on the comprehensive weight and the standardized score of each evaluation index to obtain a comprehensive stability coefficient; and selecting the non-dominated solution with the highest comprehensive stability coefficient as a final construction scheme, and performing dynamic adjustment according to a construction feedback result. According to the method, a perfect evaluation index system can be established, the optimal construction scheme is selected, and the construction safety and the structural stability of the large-span stiff skeleton concrete arch bridge are improved.

The invention provides a tunnel surrounding rock reinforcement stability determination method and system, and relates to the technical field of surrounding rock stability determination methods, and the method comprises the steps: arranging a plurality of measurement points, and collecting the experimental data of each measurement point; constructing a stability coefficient of each measurement point through an entropy weight method; the inner side face of the surrounding rock is divided into uniform grids, and the stability coefficient of any grid point is calculated through inverse distance weighted interpolation; and calculating an overall stability coefficient of the surrounding rock through a volume weighting method, constructing a risk assessment model by adopting an extreme value statistical method, outputting a surrounding rock instability probability, and giving an alarm when the surrounding rock instability probability is greater than a set surrounding rock instability threshold probability. The weight coefficient is automatically calculated based on the information entropy, and the weight is dynamically updated along with the monitoring data and better fits the actual engineering state; the inner side face of the surrounding rock is divided into uniform grids, full-area coverage is achieved, the stability of grid points is calculated through distance attenuation weights on the basis of stability coefficients of adjacent monitoring points, and weak areas are accurately recognized.

The invention provides an anchoring slope landslide instability risk evaluation method under a rainfall condition, and belongs to the technical field of geotechnical engineering and geological disaster prevention and control, and the method comprises the steps: constructing a theoretical calculation formula of a multilayer rock-soil body anchoring slope stability coefficient under a rainfall infiltration effect based on a segmented slip plane method; based on a Monte Carlo probability analysis framework, introducing a reliability index, and establishing a slope reliability integrated evaluation model; acquiring soil body, rainfall, support and geometric parameter data of the side slope; defining various parameters as random variables, and performing large-scale sampling calculation based on the theoretical formula; counting probability distribution of the stability coefficient, and solving a reliability index and a failure probability; establishing a risk monitoring criterion, and judging whether each index exceeds a permissible value or not; and implementing risk dynamic early warning based on a judgment result. According to the method, an integrated evaluation technology system for the reliability of the anchored side slope under rainfall suitable for the multi-layer rock-soil body is constructed, and efficient quantification of the reliability of the side slope under the multi-parameter coupling effect is achieved.

The invention provides a tunnel face advanced core soil stability analysis method considering a spatial effect, which is based on a traditional prism-wedge model and aims at the problem of non-uniform distribution of surrounding rock stress in a tunnel excavation process, and virtual support force and a vertical deformation pressure reduction coefficient are introduced into the model. The method comprises the following steps: setting a hypothesis condition, and establishing a tunnel face stability analysis model based on a prism-wedge model; determining a tunnel face core soil stability coefficient by solving the tunnel face stability analysis model; and determining the stability degree of the current tunnel face core soil by using the stability coefficient of the tunnel face core soil, and determining advance support measures according to the stability degree. The method is simple in structure and convenient to calculate, the model prediction precision is effectively improved, a reliable theoretical basis is provided for tunnel support design and construction parameter optimization, and the method has a good engineering application prospect.

The invention provides a slope stability evaluation and control method based on multi-factor deformation analysis, and belongs to the technical field of geotechnical engineering.The slope stability evaluation and control method comprises the following steps that S1, multiple monitoring parameters of a slope are obtained; s2, predicting the deformation trend of the slope by using an adaptive depth hybrid prediction model based on the monitoring parameters to obtain a deformation trend probability prediction result; s3, synchronously with the prediction step, performing real-time evaluation on the slope stability by using a stability dynamic evaluation model based on the monitoring parameters to obtain a slope stability coefficient F; s4, performing risk judgment according to the deformation trend probability prediction result and the slope stability coefficient F, and determining the current risk level of the slope; and S5, triggering a corresponding hierarchical control measure based on the current risk level, and carrying out advanced control on the slope stability. The problem that according to a traditional scheme, after monitoring data reach a threshold value, a control measure is started, the slope which starts to deform is controlled, and the optimal intervention period is missed is solved.

The invention provides a geological disaster risk assessment method and device and a storage medium, and belongs to the technical field of geological assessment, the method comprises the following steps: importing geological data at the current moment, and carrying out infiltration depth analysis on the geological data to obtain a target infiltration depth; performing stability analysis on the geological data and the target infiltration depth to obtain a stability coefficient; performing kinetic analysis on the geological data according to the stability coefficient to obtain a target kinetic parameter set; and evaluating the stability coefficient and the target kinetic parameter set to obtain a geological disaster risk evaluation result. According to the method, the risk level of the geological disaster can be evaluated more accurately, the risk evaluation precision is improved, the possible influence range and degree of the disaster can be predicted more accurately, and a scientific basis is provided for disaster prevention and reduction work.

The embodiment of the invention discloses a debris flow early warning method and a debris flow early warning system. The method comprises the following steps: synchronously acquiring object source humidity data and object source displacement data of a debris flow object source area; inputting the object source humidity data and the object source displacement data into a preset model to obtain a stability coefficient of the debris flow object source area; based on the stability coefficient, an early warning level is judged; and executing a corresponding preset early warning task based on the early warning level. The embodiment of the invention provides the method. The problems that in the prior art, a single sensor cannot monitor multiple parameters at the same time, data timestamp errors exist in multi-device networking, a dynamic anti-interference mechanism is lacked, and multi-parameter monitoring, complex interference resistance and low-cost integration cannot be considered at the same time are solved.

The application provides a transformer fault monitoring method and system, which comprises the following steps: collecting multi-source monitoring data at a risk monitoring section in a tunnel; calculating a first state index reflecting structural stiffness degradation and a second state index reflecting a structure-seepage field coupling stability coefficient under the action of seepage water; calculating a comprehensive state index of the monitoring section at a target time through a preset dynamic evaluation model, and generating corresponding structure state grades and early warning information. Through the fusion of multi-source heterogeneous monitoring data and the construction of a dynamic evaluation model, more accurate and forward tunnel structure state perception and early warning can be realized, the limitations of traditional single threshold alarm are overcome, the lining mechanical property attenuation, groundwater seepage activity and water corrosion effect are coupled and quantitatively evaluated through the calculation of the structural stiffness degradation index and the seepage-structure coupling stability index, and the accuracy of state discrimination is significantly improved.

The invention belongs to the technical field of water conservancy and hydropower engineering and geotechnical engineering, and particularly discloses a prediction method and terminal equipment for multi-layer accumulation-dumping type reservoir bank collapse, and the prediction method comprises the steps: dividing a reservoir bank accumulation body into a plurality of blocks; acquiring the fracture water pressure of the failure surface of each block, and determining the stability coefficient of each block according to the fracture water pressure; dividing the reservoir bank accumulation body into a plurality of dumping areas with different dumping degrees according to the stability coefficient, and drawing an engineering geological profile map of the reservoir bank according to the boundaries of the dumping areas; and determining a stable slope angle of each measuring point on the engineering geological profile map, and predicting the bank collapse amount and the bank collapse width of the multilayer accumulation-dumping type reservoir according to the stable slope angle. According to the method, the reservoir bank accumulation body is divided into a plurality of dumping areas with different dumping degrees according to the stability coefficient determined by the fracture water pressure of the failure surface, so that the bank collapse prediction result conforms to the reality, and the stepped failure characteristics of the multi-layer accumulation-dumping type reservoir bank collapse can be reflected.

The present application relates to the technical field of new energy automobile driving motor stator assembly, in particular to a micro size analysis and evaluation method for vehicle driving motor stator assembly, which comprises the following steps: before the stator assembly is assembled, the micro size of the stator tooth space is accurately measured, then the micro size of the tooth space is subjected to Fourier decomposition and analysis, the stability coefficients of the second-order component and the high-order component of the micro size are calculated in sequence, the comprehensive evaluation coefficient of the micro size of the stator assembly is obtained by integration, and the score and risk rating are completed according to the preset grading standard. The method realizes the quantitative analysis and early risk prediction of the micro size of the stator tooth, can effectively avoid the problems of noise deterioration, layered deformation and scanning failure after assembly, reduces the waste of samples, shortens the detection period and improves the assembly reliability of the motor.

The present invention relates to a method for directly obtaining the deep fine structure of underground space by using gravity, comprising: S1, obtaining Bouguer gravity anomaly data; S2, obtaining the regularization downward continuation stability coefficient by using the sliding window numerical deviation statistical accumulation estimation method; S3, obtaining the Fourier cosine series of the Bouguer gravity anomaly; S4, obtaining the downward continuation section by using the adaptive stable regularization downward continuation algorithm; S5, obtaining the high-order vertical differential difference according to the downward continuation section; S6, obtaining the low-frequency difference map by combining low-pass filtering; S7, performing depth correction on the low-frequency difference map to obtain the deep fine structure of underground space. The method for directly obtaining the deep fine structure of underground space provided by the present invention solves the stability problem of the downward continuation technology at any depth and the problem of separating the fine structure of underground space including layered structure, deep structure, and small structures, and realizes the direct acquisition of the fine structure and tectonic information of underground space based on gravity.

The application discloses a surrounding rock strength calculation method and system based on prestressed anchor equivalent supporting reaction, relates to the technical field of surrounding rock data processing, and comprises the following steps: obtaining initial mechanical parameters of surrounding rock, tunnel excavation parameters and design parameters of anchor supporting; based on the design parameters, calculating the cohesion increment, the elastic modulus of the anchor surrounding rock composite structure and the equivalent supporting reaction respectively; superimposing the cohesion increment and the initial cohesion of the surrounding rock to obtain the total cohesion; applying the equivalent supporting reaction as a boundary condition to a bearing arch model; parallelly calculating the rock mass strength safety factor, the anchoring system efficiency coefficient and the comprehensive deformation stability coefficient; and synthesizing the rock mass strength safety factor, the anchoring system efficiency coefficient and the comprehensive deformation stability coefficient to obtain the final surrounding rock strength safety factor. Through quantitative analysis, the application reduces the possibility of engineering risk and provides technical support for this special and complex engineering type of large-span tunnels.

The invention belongs to the field of engineering application, and provides a water-proof scyphistoma adhesion-resistant wave-dissipating submerged dike which comprises a submerged dike adhesion-resistant optimization system, and the system comprises an adhesion extraction module which obtains the surface roughness, the effective adsorption area and the water flow speed through a contourgraph, a covering method and a buoy tracking method, constructs a model to calculate an initial adhesion value, and obtains the initial adhesion value; the correlation between the sub-parameters and the attachment density is analyzed when the risk is high; the structure optimization module determines an optimal inclination angle and a hollowing rate based on the negative correlation parameters, and calculates an attachment optimization value after adjustment to judge whether continuous optimization is needed or not; the coating laying module is used for identifying a high-adhesion-rate area according to the continuous optimization signal, determining an optimal coating laying area through an adhesion strength coefficient and verifying an effect; and the stability analysis module monitors for 30 days, calculates a structural stability coefficient and a final initial adhesion value, evaluates long-term stability through a comprehensive optimization value, and ensures that the submerged dike has wave dissipation and waterproof scyphistoma adhesion effects.

The invention provides a general analysis method for the stability of a slope in any form based on strip-block resultant external force moment correction. The general analysis method comprises the following steps: S1, constructing a two-dimensional analysis model of the slope; s2, analyzing the stress of the strip blocks; s3, searching the gravity center position of the sliding body; s4, acquiring key geometric parameters; s5, analyzing the overall stress balance and moment balance of the sliding body; and S6, solving a stability coefficient. Double analysis of stress balance and moment balance is realized by adopting a strip-block and external force unified expression form, so that a basic mechanical framework of a stability analysis method is unified, and a famous method, an upgraded version and the like are all special cases of the method; and the huge technical limitation that some current methods can only consider mechanical preciseness or applicability in one aspect is broken through. The invention provides a brand new analysis method system, so that the stability analysis result can be obtained more scientifically, and the most essential path is provided for personnel in the field to comprehensively understand the stability analysis theory.

Aiming at the problems of static solidification of design parameters and poor regional adaptability in stability checking calculation of a traditional method, the invention discloses a data-driven reinforced retaining wall dynamic safety coefficient prediction method. The method comprises the following steps: 1, inputting historical monitoring data of a reinforced retaining wall; calculating an effective resistance mean value, an anti-sliding stability coefficient and an anti-overturning stability coefficient of the rib material, and mapping the coefficients into a stability reference function; 2, constructing a four-dimensional feature decomposition model, and disassembling the stability reference function into a trend item, a fluctuation item, an inertia item and a performance target adaptation item; 3, constructing a stability evolution neural network, guiding network optimization through a multi-objective loss function, and outputting various combination coefficients and an optimized stability reference function; 4, the dynamic stability coefficient time sequence evolution function is restored through reverse mapping, and the predicted dynamic anti-sliding safety coefficient, the predicted dynamic anti-overturning safety coefficient and the rib material effective resistance mean value reference value are output. The method provides an accurate quantitative basis for the design of the reinforced retaining wall in actual engineering.

This invention discloses a method, system, and storage medium for comprehensively evaluating the thermo-oxidative aging degree of asphalt materials. The method includes the following steps: Step 1, subjecting a target asphalt material sample to thermo-oxidative aging treatment and recording multiple performance index data of the asphalt material sample in real time during the thermo-oxidative aging period; Step 2, using principal component analysis (PCA) to obtain the comprehensive performance index Z of the asphalt material at different aging times from the multiple performance index data of the asphalt material sample. 检测 And plot the fitting curve to obtain the fitting equation Z corresponding to the asphalt material sample. 拟合 Step 3, based on Z in the fitted equation 拟合 The variation range was used to obtain the predicted curve of the aging stability coefficient (ASC) of asphalt material samples. This invention aims to obtain an index that can be used to stably evaluate the aging performance of asphalt materials.

The invention provides a construction tunnel surrounding rock stability prediction method and system, and relates to the technical field of tunnel engineering, and the method comprises the steps: obtaining the three-dimensional point cloud data of a tunnel face rock mass outcrop, and detecting a surrounding rock hidden structure through a geological radar; constructing three-dimensional point cloud data of the concealed structure and aligning the three-dimensional point cloud data with coordinates of the rock mass outcrop point cloud data; calculating the distance from the concealed structure to the tunnel face, and screening out high-risk concealed structure points; establishing a spherical influence area by taking the high-risk hidden structure point as a center, and extracting a rock mass outcrop point in the area as a high-risk surface monitoring point; stress testing is carried out on the monitoring points, and displacement meter sensors are arranged to obtain deformation data; collecting a rock sample to obtain geological strength data, and calculating a surrounding rock damage energy index; estimating a surrounding rock damage energy index and stress of the high-risk hidden structure point through a spatial interpolation method; and calculating the stability coefficient of the surrounding rock by combining the two, grading the stability of the surrounding rock, and formulating corresponding response measures. The tunnel surrounding rock stability can be effectively predicted.

The application relates to the technical field of mining, and provides a mining method and system based on improved mathews stope stability analysis. In the method, in response to the fact that the target stope exists in advance support, the stress coefficient of the target stope is corrected and the influence coefficient of the pillar on the stability of the target stope is introduced when the stability coefficient of the target stope is determined; then, the stability of the target stope is analyzed through the position of the control span of the target stope and the stability coefficient of the target stope in the improved Mathews stability graph of the stope stability analysis which is constructed in advance. Through the correction of the stress coefficient of the stope and the introduction of the influence of the pillar on the stability of the stope, the advance support of the stope and the role of the pillar in the stability are fully combined, so that the target stope stability can be more scientifically and accurately analyzed, and the analysis precision of the target stope stability is improved.

The application discloses a kind of baffle type stability discrimination method of one-word steel plate concrete composite wall component. The stability parameters of the component in plane and out of plane are obtained by calculating and processing the wall component, and the initial stability stress ratio of each is obtained by initializing calculation. The final stability stress ratio is obtained by iterative cycle processing according to the current stability stress ratio. The stability discrimination result of the wall component is obtained by judging and processing the final stability stress ratio obtained by the iteration of in-plane and out-of-plane. The stress ratio initial value formula considering the stability coefficient is introduced by the strength formula stress ratio analytical solution, which greatly improves the iteration efficiency, and the numerical differential form is used to gradually approach the stability stress ratio, which has faster convergence speed.