Limit Value of Gas Content for Prediction of Area Prone to Outburst in Longshan Mine

详细信息   

• 责任者：Sun Lijuan (School of Resource and Safety Engineering ; China University of Mining and Technology ; Beijing 100083 ; China) ; Hao Fuchang
• 刊名：Coal Geology & Exploration
• 出版年：2012
• 卷期：40(3)
• 关键词：煤和瓦斯突出 ; coal and gas outburst ; 河南 ; Henan Province
• 页码：p.23-25, 28
• 图表：1 illus., 8 tables, 3 refs.
• 分类号：1004
• issnNo：ISSN1001-1986
• isbnNo：CN61-1155/P

摘要

Accurately determining the limit value of gas content for prediction of area prone to gas outburst has the instructive function to improve targeted outburst prevention and reduce cost. This paper, taking seam II1 of Longshan mine as an example, on the basis of measuring lots of gas parameters, analyzed the outburst characteristics in Longshan mine and studied adsorption characteristic of seamⅡ1. A lot of gas content and prediction indexes were measured and their relation was studied. The results show that the metamorphism degree of seam Ⅱ1 is high with strong adsorption ability, and it can adsorb more methane under the same gas pressure, eventually it was determined that the limit value of gas content is 10.0 m³/t.