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Based on summing up forecasting method and theory about water-inrush from floor of working face, combined with a lot of practical information analysis, the main five factors controlling water-inrush from floor are found out, which are water yield property of aquifer, water pressure, effective confining stratum thickness of mining floor, fault or broken zone and mining pressure. According to the typical...
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...
Coalmine gas concentration is a very complicated nonlinear dynamical system, which has obvious characteristics of chaos. Accurate prediction of coalmine gas concentration is very important to direct security production. However, data, got from in-wells, usually include noises, because of complex environment and multiple noises in-wells. Because of the capability of dividing frequency and diminishing...
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...
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...
Based on the background of multi-rope friction hoisting transport system and the factual loading of hoisting skip as the object monitored, a practical and economic monitoring system scheme has been put forward, which is not only capable of monitoring the factual loading of hoisting skip but also can detect the quantity of unloaded coal left in hoisting skip after the process of unloading expediently,...
It is very important for ensuring the mine's safety and protecting the environment to inspect the concentration of CH4 in time. It is advantageous for control center to keep fluent communication with far excavate coal spot; it enhances the safety factor and solves the problem of telecommunication. The cost of system is low and the quondam communications cable can be used.
The upgrading of China's coal mine detection equipment and technical means are very backward, mainly distributed instruments and devices, low efficiency, poor accuracy, detection and testing of the limitations of the data, testing methods, data-processing technology is backward. Unable to provide an objective and impartial technical data to meet modern coal mine production safety needs. In this paper,...
This article establishes mine workers' safety behaviors simulation system through combined virtual reality and mining safety production. The aim is to standardize safety behavior, improve the effectiveness of safety training and accordingly reduce the accidents' occurrence in coal mine. The system is constructed by means of 3D building software. Then, an integrated development in the platform Virtools...
This article establishes mine workers' safety behaviors simulation system through combines virtual reality and mining safety production. The aim is to standardize safety behavior, improve the effectiveness of safety training and accordingly reduce the accidents' occurrence in coal mine. The system is constructed by means of LAMP building software. Then, an integrated development in the platform Virtools...
The core of fuzzy evaluation on the safety of belt conveying system is membership degree transformation. But the existing transformation methods should be questioned, because redundant data in index membership degree is also used to compute object membership degree, which is not useful for object classification. The new algorithm is: using data mining technology based on entropy to mine knowledge...
Many researches have shown that over 80 percent of the accidents in coal mines may be caused due to human unsafe behavior. One of the main contributing factors to unsafe behavior of miners was operation technique, i.e. their incorrect operation and peccancy, which resulted in accidents. This article proposed a practicable solution to how we can make the miners operate expertly and correctly and check...
A novel alarming assessment model of coalmine gas is presented in this paper. Based on the information fusion technique of multi-sensor, we introduce the thought of variable fuzzy set to assess complicated and risk coalmine gas. Through information fusion we can get more effective and reliable data about coalmine gas. The method for variable fuzzy set theory can reasonable identify the relative membership...
Based on the theory of system engineering, coal mine production safety has been analyzed. From workers, production process, coal production and economy, coal mine production safety evaluation indexes have been confirmed, and then the BP neural network model of coal mine production safety evaluation has been built. After training and testing the model, the model can accurately evaluate the coal mine...
This paper discussed the application of virtual reality technology and its application on prevention of coal and gas outburst in coal mine. With the help of virtual reality technology, the vivid and process of coal and gas outburst in coal mine could be obtained. The application of virtual reality technology on prevention of coal and gas outburst included development such as system requirements, data...
A cost effective ZigBee-based wireless mine supervising system is presented in this article. This scheme used intelligent helmets as voice terminal and ultra-low-power nodes of wireless sensor network.The programme adopted ZigBee wireless technology to build wireless sensor networks, realized real-time surveillance with early-warning intelligence on methane, temperature, humidity in mining area, and...
The broad masses of coal mining enterprises have been very concerned about how to effectively evaluate safety and reliability of mine ventilation system. Domestic and international scholars in this regard have also carried out a substantial amount of research and made a variety of different types of evaluation methods, but because there are many complex factors that affect the safety and reliability...
In this paper, finite element analysis has been applied on the Phi2.8 mtimes5.75+2.25 m of southern Africa that has been contracted by CBMI Construction Co Ltd. Different contact finite element model as manholes in different position of the twelve clock points are built by using ANSYS parametric design language (APDL). Stress and deformation under the actual condition were presented by calculating,...
In order to prevent and reduce coal mine gas explosion occurred, this paper firstly generally designed pre-warning expert system of coal mine gas safety which based on object-oriented. Secondly, it developed and realized the function of the system, including the establishment of a comprehensive database and knowledge base, the information in the system can more accurately be expressed through the...
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