深部开采含瓦斯煤蠕变力学特征及延期突出机理研究

项目名称： 深部开采含瓦斯煤蠕变力学特征及延期突出机理研究

项目编号： No.50874124

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 金属学与金属工艺

项目作者： 尹光志

作者单位： 重庆大学

项目金额： 40万元

中文摘要： 随着煤矿开采深度的增加,煤与瓦斯延期突出时有发生,并造成了大量的人员伤亡和财产损失。由于煤与瓦斯延期突出具有延时性和隐蔽性，因而会导致十分严重的危害。本项目采用自行研制的含瓦斯煤三轴蠕变实验装置，对含瓦斯煤的蠕变动力学失稳规律进行深入系统的实验研究，建立含瓦斯煤的本构关系，提出含瓦斯煤的蠕变失稳准则和判据。采用自行研制的煤与瓦斯延期突出模拟实验装置，对煤与瓦斯延期突出过程进行了实验研究，提出了煤与瓦斯延期突出机理。借助现代非线性科学的突变理论等对含瓦斯煤的非线性动力学特征进行了分析，采用人工神经网络的方法，对煤与瓦斯延期突出的预测进行了研究。该项目的研究成果对于丰富深部开采条件下煤岩灾害动力学理论的发展具有重要的理论和实际意义。

中文关键词： 深部开采；高应力；含瓦斯煤；蠕变；延期突出

英文摘要： With increasing in depth of mining,the delay of coal and gas outburst has caused a large number of casualties and heavy losses due to its nature of delay. Using the self-made triaxial creep experimental apparatus, the dynamical law of instability of creep for coal containing gas is systematically investigated, and the constitutive relation is built,moreover,the instability rule and criterion for coal containing gas are also proposed. In addition, the experimental investigation on the process of dela of coal and gas outburst is performed by means of the self-made simulation device,and the mechanism of the delay outburst is presented. Beside these,the nonlinear dynamical property of the delay outburst is analysed with catastrophetheory which belongs to the modern nonlinear science,and the forecast of the delay outburst is studied by the artifical neural network method.This project has an important meaning for the development of hazard dynamics of coal and gas under deep mining.

英文关键词： deep mining;high stress; coal containing gas; creep;delay of coal and gas outburst