Analysis on air-leakage law of goal in condition of ascending mining for top-coal caving

• 来源期刊: 煤炭学报（英文版）
• 年，卷（期）: 2009,（1）
• 页码范围: 81-84
• 页数: 4页
• 语种: 英文
• DOI: 10.1007s12404-009-0116-7

摘要

Using the Jisan Coalmine's top-coal caving for the 3down coal seam with as-cending mining as the project background,the air-leakage characteristics of the goaf was analyzed.Through data fitting of the in situ observation,the models of gas seepage,diffu-sion and air-leakage in the goaf were established in ascending mining.The Computation Fluid Dynamics software Fluent was used to simulate the air-leakage law of the goaf.The results of the numerical simulation provide a basis for the use of the technology of ventila-tion and fire prevention in the working face of an ascending mining,which ensures the safety in production in the working face of the top-coal caving for 3down coal seam in the Jisan Coalmine.