唐安煤矿瓦斯抽排井反井钻机施工

摘要

Tang’an Mine is a high gassy mine. A surface gas drainage shaft was located near the mine ventilation shaft industrial square ,was 1 m in diameter and 287 m in depth. The mine gas drainage shaft was constructed with the raise boring machine. A pilot hole was firstly drilled and then was reamed to a diameter of 1 m. The main engineering of the mine gas drainage shaft was consisted with three parts. First was to drill a mine gas drainage shaft with a depth of 287 m and a diameter of 1 m. Second was to install the gas drainage pipeline with a outer diameter of 530 mm and a thickness of 15 mm. Third was to install the gas drainage pipeline with a depth of 1.5 m and a length of 400 m.Due to the scientific and rational construction plan ,a safety and rapid construction was realized for the mine gas drainage shaft.%唐安煤矿为高瓦斯矿井，地面瓦斯抽排井位于风井工业广场附近，直径1m，井深287 m ，采用反井钻机施工，先钻导向孔，再扩孔到直径1 m 。瓦斯抽排井主要工程由3部分组成：一是钻进深度287 m 、直径1 m 的瓦斯抽排立井；二是安装外径φ530 mm 、壁厚15 mm 的瓦斯抽排管路；三是安装埋深1.5 m 、长度400 m 的瓦斯抽排管路。由于施工方案科学合理，实现了安全快速施工。