富水地层立井井筒揭煤研究

Study on of Vertical Shaft Uncovering Coal Seam in Water-Rich Stratum

摘要: 立井井筒揭穿厚煤层是一项有较大安全风险的工程。文章以霍尔辛赫煤矿回风立井井筒揭煤为工程实例，对富水地层井筒揭煤的若干技术问题进行了研究，结果表明煤层附近地下水的流动会在一定程度上降低煤层的瓦斯含量和瓦斯压力，从而降低煤层的突出危险性。同时，文章也对井筒揭煤期间的涌水和瓦斯防治提出了有针对性的技术措施，确保了井筒顺利揭穿煤层，可以为类似情况提供借鉴和参考。

Abstract: Vertical shaft uncovering coal seam was a project with great safety risk. Based on Huoerxinhe re-turn air shaft of coal mine uncovering coal for the engineering example, some technical problems of the shaft uncovering coal in water-rich stratum were studied. The results showed that flow of groundwater near coal seam would reduce gas content and gas pressure in coal seam to a certain extent, so as to reduce the risk of coal seam outburst. At the same time, the article also, on the shaft uncovering coal during the gas prevention and control of water, put forward the corresponding technical measures, to ensure the smooth debunk coal seam wellbore. Meanwhile, it could provide reference for similar situations.