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In allusion to the failure data submergence in a circuit breaker burning accident in a conventional substation of a coal mine, and in view of those supervision and control system defects in a conventional substation such as information islands, complication of network nodes and subsystems, nonstandardization of application function, poor expansion of system, and also high charge of operating and maintenance,...
In order to improve the safety of coal mine production further, the paper designs a roof abscission layer wireless monitoring system based on 433MHz RF technology. Monitoring sub-stations and nodes under the ground form a distributed wireless network and communicate with each other via wireless data transmission module CC1100. In this wireless network, sub-stations, connecting to remote monitoring...
Coal detection is mainly carried out in accordance with the relevant standards and regulations for coal tests and analysis. Coal detection needs to have support of certain technology. Detection management system is a set of work procedures that is specially designed for coal testing. Through the strict management of coal inspection management system for coal detection, in which computer technology...
The incidence of dynamic rock disasters is closely related to the distribution of stress in the surrounding rock. For the safety requirement of the construction and the operation of underground caverns, the stress of surrounding rock is monitored to evaluate the stability of underground caverns. The construction of spillway tunnel in Wawushan project was taken as our research object. We studied the...
With the deep mining development of coal resource, many safety problems have arisen and become serious gradually, such as tunnel deformation, rock burst, and so on. Multi-source techniques and methods must be used to monitor and study the behave laws of tunnel pressure, thus safety and efficient mining can be guaranteed. It takes the working face No. VI 15-22020 and its transportation tunnel of 2nd...
The rapid development of China coal mine safety management information play an important role on improving mine safety standards, however, there exist some problems such as cannot be a comprehensive system of monitoring, evaluation and analysis of safety, forecasting of security trends, etc. Papers have researched based on this problem, carrying out research on an analysis and collection of security...
In order to realize coal mining in safety without moving villages, increase coal recovery ratio, solve the conflict of mining and panel relays, the scheme of paste backfill mining under villages in Xiaotun coal mine is executed, and the surface subsidence observation lines on the surface of the mine are established and timely monitored. Based on the results of the surface movement observation, the...
According to the statistics, roof and side fall accidents often occur and jeopardize greatly in coal mines. The variation of the strain and stress in the surrounding rocks of the mine roadway can predict the accident. How to obtain the strain and stress is the key point of the prediction. This paper provides a method on the case. Firstly the principle of monitoring stress in surrounding rocks of mine...
As a modern security design, Inherent Safety means that equipment and facilities is able to contain the inherent fundamental features to prevent accidents. Mine hoist is the most important equipment in the coal production. How to achieve safe, reliable, efficient production, has been the focus study at home and abroad. Inherent safety is reflected in hoist design, primarily through the design measures...
This article starts from the current background of coal mine safety situation and combines with the status of coal mine safety research and computer network technology development, it gives the design of physical structure and logical structure of multimedia alarm system for coal mine safety and discusses and researches its implemental key technologies.
In this paper, in accordance with the composition and features of ventilation safety monitoring information fusion system in the coal mine, analyzes the necessity for multi-sensors management. Underground for complex structure, wide area of the monitoring, usually the monitoring process is divided into many small targets monitoring area, the monitoring area of the mine ventilation system security...
Because of the limit of the domestic configuration software which is in the use of scrutinizing the coal mine, the ActiveX technique is discussed and the design of the safety of coal mine, which utilize the ActiveX technique, is actualized. The fig of system frame and the implementation of part of modules are also given. This system can provide the friendly interface for the controlling of coal mine,...
Coal mine water inrush is a very difficult problems which should be solved more earlier, and it have long plagued safe production of coal mines. The reliable operation of coal mine drainage systems plays a vital role in safe production of coal mines. Based on the non linear relationship of the state parameters of the coal mine drainage facilities, we propose a safety monitoring method based on BP...
In order to increase dust measurement precision and real-time capacity, an improved dust monitoring system was presented. One master with three extensions was adopted at measuring point and the data fusion was adopted. Furthermore, to solve the problem of coal-dust explosion limit reducing once the gas gathering occur, the explosion parameters were detected by multi-sensor and the information of dust,...
In view of the severe situation in coal mine safety production, using tomcat6.0 as the Web server software, through the dynamic web page struts technology and ibatis framework technology to realize database connectivity, using Myeclipse 5.5.1 as a development tool, we develope the web-based system which is monitoring and managing of the coal mine safety equipment intelligently. For different units,...
This article describes the design of a wireless sensor network based on ZigBee technology. It is mainly used for collecting and transferring the various monitoring information about the coal mine underground. Then the data will be analysed and processed in the monitoring system outside, so that we can ensure the safety of the coal production and effectiveness better.
Coal water mixture is a new kind of fluid fuel, and the production of coal water mixture with automatic control is needed for its unique property. This paper focuses on design automatic control to the production of coal water mixture, and present some design schemes. It includes how to design coal water mixture with automatic control system. In addition, it introduces main blocks of coal water mixture...
There are many different factors that influence the safe production of coal mine such as equipment factor, environment factor and artificial factor etc. At current, many coal mines all over the world have built up harmoniously independent mutually monitoring and controlling sub-systems based on variety communicate channels and protocols. In this paper, a monitoring and controlling framework model...
The system utilizes the object-oriented analysis method and the broad-based B / S / D software architecture. Then researching and developing the coal mining security equipment's intelligent monitoring and management system of being based on the web-environment, the Web server software on this system using the tomcat6.0. Connecting the database by struts and ibatis dynamic web page technology and framework...
Contamination flashover directly affect the safety of coal production, by analyzing the pollution flashover mechanism is Characterization Equipment Leakage current drawn outer surface of insulation for insulation levels of representative physical quantities, the alarm value determined for the online monitoring system provides basis. External insulation design of substations and can find the online...
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