Abstract:To enhance the transportation efficiency and safety of open-pit mines,this article analyzes the technical solution of unmanned driving intelligent cluster based on 5G private network,multi-sensor fusion and vehicle-road-cloud collaborative control.Taking Xinjiang Zhundong Open-pit Coal Mine of Guoneng as an actual case,relying on the intelligent transformation of infrastructure,the upgrade of the line-controlled mine truck system and the integrated deployment of the cloud control platform,the article constructs a complete intelligent open-pit mine transportation system.The results show that this scheme can extend the operation time by approximately 10%,significantly reduce transportation costs,and effectively decrease the number of safety accidents,which has positive significance for promoting green and efficient production in the mining area.

Abstract:In order to realize the monitoring and early warning of landslide disaster effectively,avoid and reduce the threat and loss caused by disaster,based on the improved tangent angle model of three-stage creep theory,the article studies change law of tangent angle in the dynamic development of landslide,combines with the application analysis of landslide cases,successfully realizes the stage early warning of landslide.The results show that the improved tangent angle method can effectively distinguish the different acceleration stages in the process of landslide acceleration deformation and identify the acceleration trend.The improved tangent angle method combined with velocity reciprocal and slope landslide time prediction method can effectively realize early warning and forecast,which provides data support for taking early warning measures in time.

Abstract:In order to meet the requirements of increasing the output in Xinjiang South Tianchi Energy Open-pit Coal Mine and complete the task of increasing the amount of blasting volume year by year,the article puts forward the idea of wide-bench hole-by-hole millisecond blasting technology,analyzes some aspects from enhancing the quantity of single blasting construction,optimizing blasting effects,improving construction efficiency and ensuring safe operations.Based on the field test and repeated improvement,the article puts forward the technical scheme of wide-bench hole-by-hole millisecond blasting.The field results show that the scheme can reduce the number of blasting,improve the blasting efficiency,reduce the operating cost,improve the blasting effect and ensure the safety of operation.

Abstract:In order to study the slope stability of the south dump of Dasuji Molybdenum Mine in Inner Mongolia,three typical profiles of the south dump are selected and simplified Bishop limit equilibrium analysis method is used to analyze the stability of the current slope of the south dump of Dasuji Molybdenum Mine in Inner Mongolia,and the subsequent pile optimization study is carried out.The results show that the current safety factors of the three typical sections of the slope of the south dump are 1.340,1.341 and 1.370,respectively,which are all greater than the minimum safety factor of 1.34.According to the safety factor under different working conditions,through calculation,the recommended overall slope foot of the subsequent stacking plan is 21°,the slope angle is 34°,the height of single step is 21 m,and the width of the soil yard step is 25 m.

Abstract:In order to reveal the causes of deformation landslides on the western slope of Buzhangba Open-pit Mine and achieve an accurate evaluation of slope stability,the article systematically analyzes the influence of factors such as formation lithology,rock mass structure,water,and engineering disturbance on the western slope.The article uses FLAC3D and strength reduction methods to perform numerical modeling and stability analysis on four typical sections in the deformation zone of western slope landslide.The results show that the long-term infiltration of groundwater into weak layers of the slope and mining engineering disturbance are the main causes of the landslide.The stability coefficients of the 334 and 340 sections obtained from numerical simulation are 1.230 and 1.176,respectively,indicating a stable state.The stability factors of sections 336 and 338 are 1.066 and 1.082,respectively,indicating that these two sections are under-stable.The analysis results are consistent with the actual development state of the western slope landslide.

Abstract:In order to understand the stability of the end slope in Weijiamao Open-pit Coal Mine,the article selects the typical engineering geological section of the end slope in Weijiamao Open-pit Coal Mine,and obtains the recommended values of physical and mechanical indexes of rock and soil mass for slope stability analysis by comprehensive analysis.The article analyzes the deformation and failure mode of the end slope by numerical simulation method,and calculates the stability coefficient of the end slope by Bishop method.The results show that the potential deformation and failure mode of the end slope is the whole or multi-step combined arc shear failure mode.The stability coefficient of the end slope is greater than 1.20,and the end slope is stable as a whole.

Abstract:A cloud edge collaborative visibility monitoring method is proposed to address the high cost of surface visibility monitoring in open-pit mines.Using the positioning information of the truck and the images obtained from the mobile onboard camera as raw data,the transmittance information of the images is calculated based on the dark channel prior theory,and the visibility information of the truck's location is then calculated and uploaded to the server.On this basis,assuming that the visibility changes on the surface of the open-pit mine follow the characteristics of a stationary stochastic process in space,the entire open-pit mine is estimated using kriging based on the visibility information calculated by all trucks,and the spatiotemporal distribution of the open-pit mine surface visibility is finally obtained.The experiment conducted in Xinjiang jiangna Open-pit Mine finds that in terms of accuracy,the average absolute error percentage of this method is 9.2%,indicating high precision;in terms of real-time performance,the monitoring results can dynamically track the actual changes in surface visibility of open-pit mines.The monitoring method has the ability to dynamically monitor the spatiotemporal visibility of open-pit mines.

Abstract:This article systematically analyzes the geological characteristics of the slope in Xinling Open-pit Mine,and explores the application potential of prestressed anchor cable reinforcement as a slope protection measure.Based on the strict theoretical framework of mechanical balance and the consideration of economic benefits,the design parameters of prestressed anchor cable reinforcement of slope are adjusted to achieve the dual optimization objectives of structural stability and economic rationality.The results show that the slope reinforcement scheme after optimization is the upper two rows of anchor cable length of 25 m,the middle two rows of anchor cable length of 20 m,and the lower two rows of anchor cable length of 16 m.The slope stability coefficient of the reinforcement scheme can reach 1.3.The application of anchor cable has a remarkable effect on slope protection,which can effectively ensure the stability of reinforced slopes in open-pit coal mines.

Abstract:In order to improve the accuracy of slope displacement prediction and solve the problems of accuracy and lag in existing methods,a combined model based on empirical mode trend decomposition and long short-term memory neural network is proposed.The predicted model considers displacement changes as the superposition of multiple simple component signals,decomposes displacement relationships into multiple periodic and trend terms through empirical mode decomposition,and then uses long short-term memory neural networks to predict these components separately,ultimately achieving the prediction of nonlinear relationships.The application of example of the slope of an open-pit mine dump show that the prediction accuracy of the model exceeds 90%,which is significantly better than the traditional BP neural network method and can meet the practical needs of engineering.

Abstract:During the process of transitioning from open-pit to underground mining in marble mines,there are challenges such as effectively connecting the two mining methods,ensuring the stability and continuity of the mining process,and the difficulty of extracting boundary pillars.The article proposes a transition plan that preserves permanent boundary pillars to fully ensure the stability of underground ore body mining.Based on the characteristics of underground mining technology,the article proposes a step sawing type adit mining technology suitable for stone deposits.The safety and stability of underground mining in the first and middle sections and multiple sections are analyzed through numerical simulation.The article obtains that the stability of the mining site may decrease and instability damage may occur After the third section is mined.

Abstract:Based on the basic situation of Yimin Open-pit Mine,the article discusses the construction goals of green mine in Yimin Open-pit Mine,introduces the construction of green mines in Yimin Open-pit Mine from the aspects of environmental governance,resource development methods,comprehensive utilization of resources,energy conservation and emission reduction,technological innovation and intelligent mining,enterprise management and corporate image.

Abstract:In order to meet the needs of intelligent management and realize the integration and analysis of geographic information data and geological elements,China Coal Pingshuo Group has established a"2C+1B"model of Pingshuo mining area geographic information system.This article introduces the design of the geographic information system based on the hybrid architecture of C/S and B/S.The system realizes the organic combination of geometric data graphic management and attribute management in Pingshuo mining area,real-time sharing of three terminals of geometric data,rapid geological modeling and network release,ground-to-ground integrated application,geographical information data application,etc.for the first time,which achieve the construction goal of a comprehensive four-dimensional geosymetric information management display application system,and provides data service support for the construction of open-pit intelligent mines.

Abstract:In order to improve the operational efficiency of the coal storage silo group,reduce system costs and ensure real-time monitoring of equipment status,this article analyzes the importance of unmanned operation of the coal storage silo group.Based on the application of scraper fault recognition,intelligent ventilation of the coal storage silo,construction of the metaverse storage model,monitoring of the transportation belt at the warehouse entrance and fire monitoring,the article analyzes the value of multidi-mensional technology in the unmanned system of the coal storage silo group,builds the coal storage silo group unmanned system based on the integration of multidimensional technology.The unmanned operation system significantly improves the intelligent man-agement level of the coal storage silo group,reduces labor costs and improves the safety and stability of equipment operation.

Abstract:In order to completely solve the problem of 4100XPC electric shovel pushing large cap and bolts failure,the article introduces the working principle of 4100XPC electric shovel pushing large cap card block,and analyzes the existing problems of 4100XPC electric shovel pushing large cap card block,gives the renovation scheme of double clamping block of big flower cap,the locking scheme of double clamping block of big flower cap and the upgrading scheme of double clamping block of big flower cap.The results show that the upgrading effect is remarkable,and the service life of the 4100XPC electric shovel is extended to 1 year,which obtain good economic and social benefits.

Abstract:In order to solve the problem that WK55 electric shovel boarding ladder is damaged due to abnormal fall,the article comprehensively analyzes the damage phenomenon and causes of boarding ladder according to the principle of boarding ladder lifting,and puts forward an improved scheme of rotation control and boarding ladder lowering linkage system and carries out the application.The results show that the improved method can greatly improve the linkage level between the turning control and the boarding ladder,and can effectively solve the phenomenon that the WK55 electric shovel boarding ladder is extruded and deformed by the turning platform,and improve the equipment mobilization rate.

Abstract:Aiming at the problem of the bucket falling out of control during the lifting of the WK-55 electric shovel,the article introduces the main components of the electric shovel lifting brake.Based on the principle of lifting brake and the analysis of lifting loss of control faults,the article presents the method for handling lifting loss of control by installing dynamic monitoring and static isolation functions on the lifting brake.The on-site operation results show that this method can effectively monitor the operation status of the lifting brake,greatly alleviate the WK-55 electric shovel lifting out of control fault,and improve the equipment mobilization rate.

Abstract:In order to investigate the damage mechanism of the water barrier formed by mudstone on the north slope of Xianfeng Open-pit Coal Mine after the rainy season in the process of groundwater dynamics,the article establishes a slope mechanics model based on the research method of combining numbers and shapes,and deduces the damage theory of the mudstone water barrier under the action of water pressure,and carries out coupled simulation based on the real rainfall in Kunming City in 2023.The results show that after the rainy season,with the rainfall infiltration is blocked,the mudstone upper water accumulation leads to the increase of water pressure,the first plastic damage occurs,from the water insulation layer to the water conduction layer.However,the slope doesnot occur a large displacement and deformation,and still maintains a stable state.After entering into the month of January,the groundwater level continues to rise,the upper water pressure of the mudstone water insulation layer reaches the limiting value,and the plastic damage occurs,resulting in the conductivity of the water,and then occur in a large range of plastic deformation,the north slope occurs landslide disaster with mudstone as the sliding surface.

Abstract:In order to prevent production safety accidents in open-pit coal mines and improve the accuracy of hidden danger prediction,an improved prediction model is proposed and developed.Taking Changxu Open-pit Coal Mine as the research object,based on the mine safety risk monitoring and management information platform,the traditional grey GM(1,1)model and two improved prediction models(BX grey model and BX grey Markov model)are carefully evaluated and compared.The results show that the BX grey Markov model is the best among the three models.The model shows a high degree of accuracy,helps to formulate more accurate risk management and hidden danger prevention and control strategies,and effectively prevent the occurrence of safety production accidents.

Abstract:Taking down-dip soft rock slope in north slope of Xianfeng Open-pit Mine as research object,based on strength reduction method and Mohr-Coulomb constitutive model,using CAD-Midas GTS NX modeling,this article systematically analyzes the characteristics of stress field and displacement field of the slope,and summarizes the mechanism of deformation instability and failure mode.The results show that the north slope exhibits remarkable shear slip characteristics under the influence of gravity stress and excavation unloading.The strata slip occurs in the middle and upper part of the rock mass,which compresses the foot of the slope and results in the shear failure of the penetrating structural plane.Slope deformation can be divided into three stages:the initial incubation stage is dominated by slow fracture development,the slip creep stage is marked by shear slip,and the shear instability stage is dominated by fracture penetration and rock mass failure.The development of weak layer,groundwater and weak sliding surface of downdip soft rock are the main factors of slope instability.

Abstract:In order to reasonably determine the slope stability control mining parameters,under the condition of ensuring production safety,we tap the maximum potential of coal resources.Based on the engineering background of Baorixile Open-pit Mine,based on the limit equilibrium theory,on the basis of determining the height and width of the pressure side of the internal dumping,combined with the numerical simulation technology,this article reveals the influence of the tracking distance of the horizontal mining internal discharge on the three-dimensional stability of the slope.The results show that when the height of the pressure slope is 595 m,the minimum width of the pressure slope is 133 m,the numerical simulation tracking distance is 200 m,the slope stability coefficient meets the requirements of the safety reserve coefficient 1.2.The mining technology of tracking the pressure slope in the horizontal mining can be used to smoothly mine the coal resources in the east slope,and the slope is in a stable state.