Study on Rupture Curing and Monitoring of Shaft Lining in the Special Stratum

2012 ◽  
Vol 490-495 ◽  
pp. 3685-3689
Author(s):  
Peng Li He ◽  
Li Guo
Keyword(s):  
Integrated Management ◽  
Reference Value ◽  
Automatic Monitoring ◽  
Concrete Lining ◽  
Mine Shaft ◽  
Automatic Monitoring System ◽  
Strain Monitoring ◽  
Shaft Lining ◽  
Thick Overburden ◽  
Monitoring Information

The technology for curing rapture and strain monitoring of coal mine shaft in special stratum is discussed in this paper. The mine shaft lining in the deep and thick overburden is put a vertical additional, which is caused by the draining consolidation settlement of bottom aquifer. When the force together with others forces is more than the ultimate strength of concrete lining, the shaft lining will be lead to fracture. In order to treat the broken shaft lining, the integrated management method of dense shaft circles, the grouting, and loop relieving-pressure grooves was taken. The monitoring information of the remote shaft lining strain automatic monitoring system can be used to predict and evaluate the safety state of the shaft lining. The suggested mechanism and technology are able to prevent and cure shaft lining rapture in other similar mine. The treatment attained to the ideal effect and the method has an important reference value for the prevention and curing of shaft lining rupture in the same strata.

Application of Shaft Lining Monitoring System in the Deep and Thick Overburden

2012 ◽  
Vol 490-495 ◽  
pp. 1099-1103
Author(s):  
Peng Li He ◽  
Dong Xiao Zhang
Keyword(s):  
Monitoring System ◽  
Automatic Monitoring ◽  
Shaft Fracture ◽  
Monitoring Data ◽  
Reinforcement Effect ◽  
Automatic Monitoring System ◽  
Management Measures ◽  
Grouting Reinforcement ◽  
Shaft Lining ◽  
Thick Overburden

The vertical additional force could make the shaft lining in deep topsoil fracture. The force is caused by the bottom aquifer drainage settlement. In order to analyze the mechanical state of shaft, a shaft lining automatic monitoring system is built. The overall safety can be valuated by it. When monitoring data show that the shaft lining will be fractured, management measures can be timely taken to prevent more damage. In the process of ground grouting treatment to prevent shaft fracture, the monitoring data can be as the shaft lining stability and grouting parameters adjustment basis, to ensure safety and grouting reinforcement effect.

Research on the Lining Monitoring System of Mine Shaft in the Special Strata

2012 ◽  
Vol 468-471 ◽  
pp. 1410-1413
Author(s):  
Peng Li He ◽  
Dong Xiao Zhang
Keyword(s):  
Monitoring System ◽  
Automatic Monitoring ◽  
Shaft Fracture ◽  
Monitoring Data ◽  
Reinforcement Effect ◽  
Mine Shaft ◽  
Automatic Monitoring System ◽  
Management Measures ◽  
Grouting Reinforcement ◽  
Shaft Lining

The shaft lining in deep topsoil will be lead to fracture by the vertical additional force, which is caused by the bottom aquifer drainage settlement. Through the establishment of the shaft lining automatic monitoring system, the mechanical state of shaft can be effectively analyzed and the overall safety can be valuated. When monitoring data show that the shaft lining will be fractured, the rocks, management measures can be timely taken to prevent more damage by a ruptured shaft. In the process of ground grouting treatment to prevent shaft fracture, the monitoring data can be as shaft lining stability and grouting parameter adjustment basis, to ensure safety and grouting reinforcement effect.

scholarly journals Zebrafish automatic monitoring system for conditioning and behavioral analysis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Marta de Oliveira Barreiros ◽  
Felipe Gomes Barbosa ◽  
Diego de Oliveira Dantas ◽  
Daniel de Matos Luna dos Santos ◽  
Sidarta Ribeiro ◽  
...  
Keyword(s):  
Video Processing ◽  
Red Light ◽  
Automatic Monitoring ◽  
Automated System ◽  
Control Group ◽  
Automatic Monitoring System ◽  
Fish Schools ◽  
Detection And Tracking ◽  
Evaluation Strategies ◽  
Light Stimuli

AbstractStudies using zebrafish (Danio rerio) in neuro-behavioural research are growing. Measuring fish behavior by computational methods is one of the most efficient ways to avoid human bias in experimental analyses, extending them to various approaches. Sometimes, thorough analyses are difficult to do, as fish can behave unpredictably during an experimental strategy. However, the analyses can be implemented in an automated way, using an online strategy and video processing for a complete assessment of the zebrafish behavior, based on the detection and tracking of fish during an activity. Here, a fully automatic conditioning and detailed analysis of zebrafish behavior is presented. Microcontrolled components were used to control the delivery of visual and sound stimuli, in addition to the concise amounts of food after conditioned stimuli for adult zebrafish groups in a conventional tank. The images were captured and processed for automatic detection of the fish, and the training of the fish was done in two evaluation strategies: simple and complex. In simple conditioning, the zebrafish showed significant responses from the second attempt, learning that the conditioned stimulus was a predictor of food presentation in a specific space of the tank, where the food was dumped. When the fish were subjected to two stimuli for decision-making in the food reward, the zebrafish obtained better responses to red light stimuli in relation to vibration. The behavior change was clear in stimulated fish in relation to the control group, thus, the distances traveled and the speed were greater, while the polarization was lower in stimulated fish. This automated system allows for the conditioning and assessment of zebrafish behavior online, with greater stability in experiments, and in the analysis of the behavior of individual fish or fish schools, including learning and memory studies.

scholarly journals Development and Preliminary Tests of a Low-Power Automatic Monitoring System for Flexible Debris Flow Barriers

2021 ◽  
Vol 55 ◽  
pp. 1783-1790
Author(s):  
Roberto Savi ◽  
Alessandro Valletta ◽  
Andrea Carri ◽  
Edoardo Cavalca ◽  
Andrea Segalini
Keyword(s):  
Debris Flow ◽  
Low Power ◽  
Monitoring System ◽  
Automatic Monitoring ◽  
Automatic Monitoring System

Design and Application of Automatic Monitoring System in Side Slope

2011 ◽  
Vol 243-249 ◽  
pp. 2613-2617 ◽  
Author(s):  
Xiu Guang Song ◽  
Zheng Ma ◽  
Hong Bo Zhang ◽  
Qian Wang ◽  
Pei Zhi Zhuang
Keyword(s):  
Large Scale ◽  
Surface Displacement ◽  
Automatic Monitoring ◽  
Scale Construction ◽  
Low Carbon ◽  
Soil Pressure ◽  
Monitoring Method ◽  
Automatic Monitoring System ◽  
Side Slope ◽  
Project Construction

The field monitoring of dangerous landslide is an important measure for guaranteeing its safety, especially when surrounded by large-scale construction. The landslide located nearby a reservoir in Shandong province. To guarantee construction safety, we adopted the automatic monitoring method for monitoring surface displacement and the internal soil pressure. The whole system uses solar power to provide energy and uses GPRS to transfer data. This system not only can provide reliable information for project construction, but also promote the application of environmentally friendly, low carbon in the monitoring field of civil engineering.

Construction and operation of batching plants in difficult geological conditions of Upper Kama potash mines

2021 ◽  
pp. 51-56
Author(s):  
V. N. Aptukov ◽  
V. V. Tarasov ◽  
V. S. Pestrikova ◽  
O. V. Ivanov
Keyword(s):  
Crack Opening ◽  
Concrete Lining ◽  
Salt Deposit ◽  
Mine Shaft ◽  
Deformation And Fracture ◽  
Geological Conditions ◽  
Negative Impacts ◽  
Long Term Experience ◽  
Term Maintenance

Scenarios of the component arrangement of batching plants in the system of a vertical mine shaft are discussed. The features of operation of batching plants in vertical shafts of potash mines are identified. The actual recorded damages generated in the lining of batching plants in the course of their longterm operation in potash mines are described. The geomechanical researches aimed to determine vertical convergence in batching rooms of mine shafts, as well as for monitoring of crack opening and displacements in sidewalls in the batching chambers are presented. The major results of the full-scale geomechanical observations are reported, and the main causes of fractures in concrete and reinforced concrete lining at junctures of shafts and batching rooms and shaft bins are identified. The set of the engineering solutions implemented for the protection of lining in batching facilities during construction of mine shafts is described, and its efficiency is evaluated. The mathematical modeling is carried out to estimate various negative impacts on deformation and fracture of concrete lining in shafts with regard to the time factor. From the modeling results, the dominant cause of concrete lining damage in batching chambers and in mine shaft is found. Based on the accomplished research results and actual long-term experience of operation of mine shafts, the most favorable factors are determined for the best design choices in construction and long-term maintenance-free operation of batching plants in potash mines of the Upper Kama Potash–Magnesium Salt Deposit.

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