Design and Application of Coal Mine Slope Detection System Based on GPS and PLC

2014 ◽  
Vol 687-691 ◽  
pp. 900-905
Author(s):  
Feng Tian ◽  
Xiao Lei Lu
Keyword(s):  
Coal Mine ◽  
Detection System ◽  
Deformation Monitoring ◽  
Reliable Data ◽  
Open Pit ◽  
Gps Receiver ◽  
Positioning Accuracy ◽  
Structure Monitoring ◽  
Mine Slope

This document explains a system of open pit slope deformation monitoring. After calculating data by software of GPS Solution and the system which bases on the signal of GPS receiver obtain information of every GPS receiver. So it can get GIS information of whole coal mine. If there is any abnormal data, it will report to the police timely, and directly control the running of coal miningmachines through PLC. Compared with the technology before, the system has higher automation integration, higher positioning accuracy, gets more responsive and provides more reliable data. It’s the best choice for long-term spatial structure monitoring and condition assessment.

Reliability analysis of an open pit coal mine slope

2000 ◽  
Vol 37 (4) ◽  
pp. 715-721 ◽  
Author(s):  
Jiachen Wang ◽  
Wenhui Tan ◽  
Shiwei Feng ◽  
Rudi Zhou
Keyword(s):  
Reliability Analysis ◽  
Coal Mine ◽  
Open Pit ◽  
Mine Slope

scholarly journals Deformation Monitoring and Stability Analysis of Shaft Lining in Weakly Cemented Stratum

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Xianzhou Lyu ◽  
Weiming Wang
Keyword(s):  
Real Time ◽  
Monitoring System ◽  
Coal Mine ◽  
Deformation Monitoring ◽  
Dynamic Monitoring ◽  
Thick Wall ◽  
Additional Stress ◽  
The Real ◽  
Shaft Lining

Shaft linings in thick weakly cemented stratum have the disadvantages of large deformation and repeated damage after repair. Considering the typical geologic characteristics and the failure characteristics of shaft linings, we establish a multilayer automatic deformation monitoring system in this paper, and the monitoring system can realize the real-time, continuous, and long-term dynamic monitoring on shaft linings. Based on the concrete strength failure criterion under biaxial compression and the analytical solution for spatially axisymmetric problem of thick-wall cylinders, the damage limit of the shaft lining in Xieqiao coal mine is obtained. Then, we choose three sections as the test area according to the typical damage forms of shaft linings to carry out the monitoring scheme on the auxiliary shaft in Xieqiao coal mine. The monitoring results show that the extreme value of the shaft lining deformation is 2.369 mm. And the shaft lining located in the border between the floor aquifer and the bedrock generates the most severe deformation, which is about 89.4% of the deformation limit. The shaft lining deformation increment fluctuates in certain range, which belongs to elastic deformation. Finally, we inverse the stress state according to the deformation value of the shaft lining, and the obtained additional stress is found to be lower than the ultimate compressive strength. Long-term project practice confirms that the deformation monitoring results can reflect the real stress condition of the shaft lining and that the monitoring system can realize the real-time dynamic evaluation for the status of the shaft lining.

Stability and Deformation Analysis for Excavation and Backfilling of Fushun West Open-Pit Coal Mine

2013 ◽  
Vol 353-356 ◽  
pp. 751-755 ◽  
Author(s):  
Yong Cheng Yan ◽  
Xian Zhang Ling ◽  
Feng Zhang ◽  
Jia Hui Wang
Keyword(s):  
Coal Mine ◽  
Slip Surface ◽  
Surrounding Rock ◽  
Open Pit ◽  
Deformation Analysis ◽  
Interface Model ◽  
Safety Coefficient ◽  
Mine Slope ◽  
The Stability ◽  
Technical Basis

Taking section W400 of Fushun west open-pit coal mine for the research, the interface model of fracture zone and surrounding rock was established. FLAC3D is used to analysis the influence of excavation and backfill of open-fit coal mine to the slope stability and deformation. The numerical results and analysis show that: (1) when the open-pit coal mine slope is excavated to final production line, the safety coefficient is 2.98, with the excavation, the deformation of the Fushun No.1 Refinery Factory area increases. (2) With the increase of backfilling, the slope coefficient increases to 3.32, this will reduce the deformation of the Fushun No.1 Refinery Factory area. Furthermore, the positions of the dangerous slip surface and serious deformation part of factory area should be regards as key areas. These conclusions could provide technical basis for the stability analysis of Fushun west open-pit coal mine.

Numerical Simulation of Slope Stability in the First Mining of Open-Pit Coal Mine

2013 ◽  
Vol 807-809 ◽  
pp. 2371-2377
Author(s):  
Guang Yi Sun ◽  
Xiao Luo
Keyword(s):  
Numerical Simulation ◽  
Steady State ◽  
Slope Stability ◽  
Coal Mine ◽  
Paper Analysis ◽  
Open Pit ◽  
Stress And Strain ◽  
Safety Coefficient ◽  
Mine Slope ◽  
Mining Slope

This paper analysis open-pit coal mine slope stability in the first mining with FLAC3D, reveal the mechanism of slope deformation, through analysis the stress and strain nephogram of model ZK8 of the first mining slope, and calculation safety stability coefficient, finally concluding stope slope of the first mining occur slip as circular form under their own gravity. The safety factor of model ZK8 is more than stope slope safety coefficient 1.20, slope is in steady state, obtained the accurate and reliable analysis results of stability.

A Study on Cumulative Effect of Production Blasting Vibration on Slope Failure in Xiaolongtan Coal Mine

2012 ◽  
Vol 229-231 ◽  
pp. 2716-2720 ◽  
Author(s):  
Yi Yang ◽  
Guo Hua Wang ◽  
Di Liu ◽  
Shi Wen Wang
Keyword(s):  
Coal Mine ◽  
Slope Failure ◽  
Cumulative Effect ◽  
Transition Process ◽  
Creeping Flow ◽  
Open Pit ◽  
Damage Effect ◽  
Blasting Vibration ◽  
Mining Depth

With the gradual escalation of mining depth, the problems of deformation and destabilization of high and steep slopes became increasingly severe. The long-term repetitive blasting vibration had long-term cumulative damage effect on the slope stability of Xiaolongtan Open-pit Coal Mine, because it adopted blasting as the principal instrument to exploit rocks. Based on the long-term blasting vibration tests in Xiaolongtan Open-pit Coal Mine, this paper analyses the deformation rules of the creeping slope there under the action of long-term blasting seismic fluctuating load. It analyzes and demonstrates the existence of the cumulative effect of blasting vibration. In addition, it puts forwards that the deep will form sliding surfaces, the superficial place will form different sliding bodies and different regions of the slope will appear deformation under the cumulative effect of the long-term blasting vibration, namely, the damage effect and accelerative effect. The acceleration of the transition process from slowdown creeping flow to stable creeping flow will eventually lead to the formation of accelerative creeping flow, thus resulting in the damage of the slope.

Research on Numerical Analysis of Landslide Cataclysm Mechanism Coal Mine

2011 ◽  
Vol 383-390 ◽  
pp. 7697-7701
Author(s):  
Zhi Qiang Kang ◽  
Ying Chun Wang ◽  
Feng Nan ◽  
Shi Lin Yuan ◽  
Jiu Lin Yang
Keyword(s):  
High Pressure ◽  
Numerical Analysis ◽  
Active Control ◽  
Coal Mine ◽  
Open Pit ◽  
Analysis Software ◽  
Mine Slope ◽  
Grouting Reinforcement ◽  
Numerical Calculus

This article according to the ShengLi Open-pit Coal Mine landslide and the slope project special details, used the FLAC numerical calculus analysis software to conduct the research to the landslide cataclysm mechanism, has carried on the optimized analysis to the reinforcement plan.Has obtained the pre-stressed anchor rope frame beam + high pressure splitting grouting reinforcement plan government landslide most superior processing plan through the numerical calculus, thus active control ShengLi Open-pit Coal Mine slope distortion destruction.

scholarly journals An Optimum Deployment Algorithm of Camera Networks for Open-Pit Mine Slope Monitoring

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1148
Author(s):  
Hua Zhang ◽  
Pengjie Tao ◽  
Xiaoliang Meng ◽  
Mengbiao Liu ◽  
Xinxia Liu
Keyword(s):  
Focal Length ◽  
Field Tests ◽  
Mineral Resources ◽  
Video Camera ◽  
Open Pit Mine ◽  
Mine Safety ◽  
Open Pit ◽  
Prototype System ◽  
Mine Slope ◽  
Slope Monitoring

With the growth in demand for mineral resources and the increase in open-pit mine safety and production accidents, the intelligent monitoring of open-pit mine safety and production is becoming more and more important. In this paper, we elaborate on the idea of combining the technologies of photogrammetry and camera sensor networks to make full use of open-pit mine video camera resources. We propose the Optimum Camera Deployment algorithm for open-pit mine slope monitoring (OCD4M) to meet the requirements of a high overlap of photogrammetry and full coverage of monitoring. The OCD4M algorithm is validated and analyzed with the simulated conditions of quantity, view angle, and focal length of cameras, at different monitoring distances. To demonstrate the availability and effectiveness of the algorithm, we conducted field tests and developed the mine safety monitoring prototype system which can alert people to slope collapse risks. The simulation’s experimental results show that the algorithm can effectively calculate the optimum quantity of cameras and corresponding coordinates with an accuracy of 30 cm at 500 m (for a given camera). Additionally, the field tests show that the algorithm can effectively guide the deployment of mine cameras and carry out 3D inspection tasks.

scholarly journals Biogeochemical Controls on the Potential for Long-Term Contaminant Leaching from Soils Developing on Historic Coal Mine Spoil

Soil Systems ◽  
2020 ◽  
Vol 5 (1) ◽  
pp. 3
Author(s):  
David Singer ◽  
Elizabeth Herndon ◽  
Laura Zemanek ◽  
Kortney Cole ◽  
Tyler Sanda ◽  
...  
Keyword(s):  
Coal Mine ◽  
Solid Phase ◽  
Microbial Community Composition ◽  
Toxic Metal ◽  
Soil Formation ◽  
Mineral Weathering ◽  
Mine Spoil ◽  
Secondary Phases ◽  
Undisturbed Soil

Coal mine spoil is widespread in US coal mining regions, and the potential long-term leaching of toxic metal(loid)s is a significant and underappreciated issue. This study aimed to determine the flux of contaminants from historic mine coal spoil at a field site located in Appalachian Ohio (USA) and link pore water composition and solid-phase composition to the weathering reaction stages within the soils. The overall mineralogical and microbial community composition indicates that despite very different soil formation pathways, soils developing on historic coal mine spoil and an undisturbed soil are currently dominated by similar mineral weathering reactions. Both soils contained pyrite coated with clays and secondary oxide minerals. However, mine spoil soil contained abundant residual coal, with abundant Fe- and Mn- (oxy)hydroxides. These secondary phases likely control and mitigate trace metal (Cu, Ni, and Zn) transport from the soils. While Mn was highly mobile in Mn-enriched soils, Fe and Al mobility may be more controlled by dissolved organic carbon dynamics than mineral abundance. There is also likely an underappreciated risk of Mn transport from coal mine spoil, and that mine spoil soils could become a major source of metals if local biogeochemical conditions change.

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