摘要
九龙矿为大采深突出矿井,按规定须优先采用开采保护层区域防突措施,为确定下保护层开采的保护范围,需对下保护层开采过程中的被保护层的相关参数进行现场考察试验。根据九龙矿保护层开采的技术条件,进行了保护层开采参数考察方案设计、研究了被保护层瓦斯压力随保护层工作面回采的变化规律,据此,确定了考察范围内保护层沿倾斜和走向方向的的卸压角,进而划定了保护层的有效保护范围,并在下保护层开采过程中对保护效果进行了考察。
According to the rules, as a outburst mine with big mining depth, Jiulong Mine must give priority to use of mining protective seam as regional outburst prevention measures, on - site investigation about the related parameters of the protective layer in the process of lower protective layer mining is carried out to dete^nine the scope of the lower protective layer mining. According to the technical conditions of Jiulong Coal Mine protective layer mining, we designed investigation program of the parameters of the protective seam min- ing, and researched about changes of gas pressm＇e of the protected layer along with the process of lower protective seam mining, accord- ingly, defined the pressure relief angle in the direction of inclination and direction of protective layer in investigation area, delimited the effective scope of protective layer, and then investigated protection effect in the process of lower protective layer mining.
出处
《煤矿安全》
CAS
北大核心
2016年第11期135-138,共4页
Safety in Coal Mines
关键词
下保护层
卸压角
瓦斯压力
保护范围
保护效果
lower protective layer
pressure relief angle
gas pressure
scope of protection
protective effect
