沿空留巷综采工作面通风方式选择及防灭火技术研究

Study on ventilation mode selection and fire prevention and extinguishment technology in fully mechanized mining face with gob-side entry retaining

为减少煤炭丢失,提高煤炭资源率,介绍了沿空留巷技术。以大柳塔煤矿52605工作面为例,分析了U型、Y型、W型、U+L型4种通风方式的优缺点,经过日常数据分析,52605工作面采用了U+L型通风方式;同时采取采高管理、注浆、注氮气、检测监控等措施有效解决沿空留巷端头遗煤自然发火的隐患问题。

In order to reduce coal loss and improve coal resource rate,the technology of gob-side entry retaining is introduced.Taking the 52605 working face of Daliuta Coal Mine as an example,this paper analyzes the advantages and disadvantages of four types of ventilation modes,namely,U-type,Y-type,W-type and U+L-type.Through daily data analysis,the 52605 working face adopts the U+L-type ventilation mode.At the same time,measures such as mining height management,grouting,nitrogen injection,detection and monitoring are taken to effectively solve the hidden danger of spontaneous combustion of left coal at the end of gob-side entry.