摘要
为了解决瓦斯含量高、松软煤层、承压灰岩水等赋存条件下突出煤层群钻进过程中经常出现瓦斯或瓦斯与水异常喷出的难题,通过改进钻孔封孔工艺、孔口装置、气渣分离装置以及缓冲释压囊袋等,结合水力排渣工艺,利用气固分离停留时间原理,设计出一套新型多通道大口径快速降压装置、自动旋转气固分离排渣装置、具有大储存空间防喷囊袋组成的打钻防喷系统。应用实践表明,在高瓦斯、松软突出煤层、瓦斯与水共存、地质构造区等多种灾害叠加的条件下能够实现连续安全钻进孔深达到千米以上,取得显著的安全效益,为大面积区域超前抽采煤层瓦斯提供了新的治理模式。
In order to solve the problem of frequent abnormal gas or gas water spewing during the drilling process of outburst coal seam groups under conditions such as high gas content,soft coal seams,and pressurized limestone water,by improving the drilling and sealing process,orifice device,gas residue separation device,and buffer pressure release bag,combined with hydraulic slag removal process,and using the principle of gas-solid separation retention time,we design a new type of multi-channel large-diameter rapid pressure reduction device,automatic rotating gas-solid separation and slag discharge device,and a drilling and spray prevention system composed of anti-spray bags with large storage space.Practical applications have shown that:under the conditions of multiple disasters such as high gas,soft and outburst coal seams,coexistence of gas and water,and geological structural zones,the continuous and safe drilling of holes with a depth of over one kilometer can be achieved with significant safety benefits,providing a new control model for the advanced extraction of coal seam methane in large areas.
作者
李广培
阳骏
白爱卿
LI Guangpei;YANG Jun;BAI Aiqing(Huaihe Energy Holding Group,Huainan 232001,China;Ping’an Coal Mine Gas Control National Engineering Research Center Co.,Ltd.,Huainan 232001,China;Huajin Coking Coal Co.,Ltd.,Luliang 033300,China)
出处
《陕西煤炭》
2025年第2期128-132,共5页
Shaanxi Coal
关键词
松软
突出煤层群
气固分离
防喷系统
超前抽采
loose and soft
outburst coal seam group
gas solid separation
anti-spray system
advanced extraction
作者简介
李广培(1982-),男,安徽蚌埠人,高级工程师、注册安全工程师,现从事瓦斯综合治理工作。
