摘要
随着矿井开采深度的增加,煤层突出危险性越来越严重,已成为严重威胁矿区安全生产的主要问题之一。区域突出危险性预测是保障煤矿安全生产的前提,而区域突出预测指标临界值的确定决定了突出预测的精准程度。为准确考察确定李子垭煤矿南二井K_(1)煤层区域突出危险性预测指标临界值,结合矿井实际情况,通过大量历史数据统计分析、实验室研究及现场实验等方法,综合分析确定了区域预测指标瓦斯压力P和瓦斯含量W临界值分别为0.74 MPa和7 m^(3)/t。区域预测指标临界值的确定,为李子垭煤矿南二井K_(1)煤层瓦斯治理和安全、高效生产提供了保障,同时可为类似矿井和煤层开展区域突出危险性预测指标临界值考察提供参考。
With the increase of mining depth,the prominence of coal seam is becoming more and more serious,which has become one of the main problems that seriously threaten the safe production of mining areas.Regional outstanding danger prediction is the premise of ensuring the safe production of coal mines,and the determination of the critical value of regional outstanding prediction indicators determines the accuracy of prominence prediction.In order to accurately investigate and determine the critical value of the outstanding danger prediction index in the K_(1) coal seam area of the south No.2 shaft of Liziya Coal Mine,combined with the actual situation of the mine,through a large number of historical prominent data statistical analysis,laboratory research and field experiments,the critical values of the regional predictive indicators gas pressure P and gas content W were determined by comprehensive analysis,which were 0.74 MPa and 7 m^(3)/t,respectively.The determination of the critical value of the regional forecast index provides a guarantee for the treatment of K_(1) coal seam gas in the south No.2 shaft of Liziya Coal Mine and the safe and efficient production.At the same time,it provides a reference for the investigation of the critical value of the outstanding risk prediction index in the area of similar mines and coal seams.
作者
邓华易
Deng Huayi(CCTEG Chongqing Research Institute,Chongqing 400037,China;State Key Laboratory of the Gas Disaster Detecting,Preventing and Emergency Controlling,Chongqing 400037,China;College of Energy and Mining Engineering,Shandong University of Science and Technology,Qingdao 266590,China)
出处
《能源与环保》
2023年第3期123-127,共5页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
国家自然科学基金青年项目(52204261)。
关键词
区域突出危险性
预测指标
临界值
瓦斯压力
瓦斯含量
regional outstanding danger
predictive indicators
the critical value
gas pressure
gas content
