孙家湾井2011年矿井灾害预防和处理计划.doc

孙家湾井2011年矿井灾害预防和处理计划
of rural drinking water sources, protection of drinking water sources in rural areas by thsolating network protection facilities
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities5
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
提升运输系统，平巷采用8kg—15kg铁道，上山采用15kg以上铁道，采用1吨矿车运输。、1m绞车提升。
孙家湾井于2010年8月委托攀枝花市恒安煤炭安全技术服务有限公司做了《矿井瓦斯等级鉴定》，攀枝花市攀安监批复为低瓦斯矿井。³/min，³/t。
按照攀枝花市西区人民政府关于同意攀枝花市锦联工贸有限公司姚家坪煤矿孙家湾井开启井口的批复（攀西府［2010］87号文）及攀枝花市西区安全生产监督管理局关于同意攀枝花市锦联工贸有限公司姚家坪煤矿孙家湾井启封井口进入建设施工程序的通知（攀西安监［2010］137号）文件精神，本矿于2010年10月15日开始启封井口进入资源整合工程建设施工。现有+1134m主平硐上车场、+1152m副平硐上车场、+1214m回风平硐及+1184m回风斜井维护改造等施工头面。
二、灾害预防：
（一）灾害预防重点：
1、孙家湾井为低瓦斯矿井，但由于K组煤层及1#、3-2#等煤层为大矿不能开采的极薄煤层，本矿井周围采空区和老塘中瓦斯、二氧化碳
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities5
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
等有毒有害气体有可能积聚，所以通风、瓦斯管理仍是矿井灾害预防重点。
2、除K7、K5 、K2、1#、3-2#煤层较稳定和稳定，顶板较好外，K3煤层不稳定，顶板不好。因此在巷道掘进时顶板管理是防治重点之一。
3、孙家湾井开采区地形北西高南东低，属褶皱侵蚀低潮中山地貌，地形切割强烈，地层坡度陡，植被稀少，采矿区范围位于当地侵蚀基准面以上，地表径流条件较好，有利于地表及地下水的排泄。
在长期生产实践中对有关井田的含水层（组）进行揭露情况看。表现为现水平上山开采涌水量均属小水至中水矿井类型，对矿井生产建设构不成大的影响。
矿井开