【摘 要】
:
This article proposed the risk early-warning model of gas hazard based on Rough Set and neural network. The attribute quantity was reduced by Rough Set, the main characteristic attributes were withdrawn, the complexity of neural network system and the com
【机 构】
:
School of Energy, Xi’an University of Science & Technology, Xi’an 710054, China
论文部分内容阅读
This article proposed the risk early-warning model of gas hazard based on Rough Set and neural network. The attribute quantity was reduced by Rough Set, the main characteristic attributes were withdrawn, the complexity of neural network system and the computing time was reduced, as well. Because of fault-tolerant ability, parallel processing ability, anti-jamming ability and processing non-linear problem ability of neural network system, the methods of Rough Set and neural network were combined. The examples research indicate: applying Rough Set and BP neural network to the gas hazard risk early-warning coal mines in coal mine, the BPNN structure is greatly simplified, the network computation quantity is reduced and the convergence rate is speed up.
其他文献
Taking the deep cutting excavation of Beijing-Qinhuangdao expressway as an example, the paper utilizes DYNA-2D dynamic FEM procedure to simulate the rock blasting process. The computation model was based on dynamical response of nonlinear elasto-plasticit
Used numerical simulation method to study the floor water-inrush mechanism in working face which was influenced by fault structure, and set up many kinds of models and performs numerical calculation by fully using large finite element soft-ANSYS and eleme
The working conditions of the MK-3 type full hydraulic tunnel drilling machine during the course of drilling were analyzed. Based on the energy balance governing equations for the drill rod, the temperature field of drill rod at the normal and non-normal
Presented field-circuit coupled adaptive time-stepping finite element method to study on permanent magnet linear synchronous motor (PMLSM) characteristics fed by SPWM voltage source inverter. In air-gap field where the direction or magnitude of the field
The main objective of the present study was introduced water mist suppression technologyto prevent and control gas burning which occurred during drilling at Wu20160 working-face in No.10 coal mine of Pingdingshan Ltd.. Based on the self-developed experime
Based on mechanism of AE creation, put forward sphere cavity model, and deduced wave Equation of AE wave radiated by the AE source in detail, and analyzed the propagation attenuation law of AE stress wave in coal (rock) strata. Displacement function of AE
From the viewpoint of interaction mechanics for solid and gas, a coupled mathematical model was presented for solid coal/rock deformation and gas leak flow in parallel deformable coal seams. Numerical solutions using the SIP (Strong Implicit Procedure) me
Creep mechanics characteristics of large scale tectonic coal was studied undergas draingae and disturbance conditions by using the new self-developed coal gas cou-pling three axial creep equipment. The results show that when σ1 is smaller, σ3 is larger,ga
Three progressive stages of testing techniques are elaborated, which are entirely manual operating, taking separate instruments testing and computer program controlling. The testing method and principle are detailed based on the testing process for meteor