新建成贵铁路成都至贵阳线乐山至贵阳段老房子隧道专项安全方案目录1编制说明.................................................................................................11.1编制依据..............................................................................................11.2编制目的和目标..................................................................................11.3适用范围..............................................................................................22工程概况.................................................................................................22.1工程简介..............................................................................................22.2地形地貌..............................................................................................22.3底层岩性..............................................................................................22.4地质构造及地动参数..........................................................................22.5水文地质特征......................................................................................32.6工程地质条件评价..............................................................................33瓦斯的定义.............................................................................................33.1瓦斯的特性..........................................................................................4中铁七局集团有限公司0新建成贵铁路成都至贵阳线乐山至贵阳段老房子隧道专项安全方案3.1.1爆炸性...............................................................................................43.1.2渗透性...............................................................................................43.1.3不稳定性...........................................................................................43.1.4窒息性...............................................................................................53.2瓦斯爆炸的必要条件..........................................................................53.2.1瓦斯浓度...........................................................................................53.2.2引火源...............................................................................................63.2.3足够的氧气.......................................................................................63.3瓦斯突出..............................................................................................63.3.1瓦斯涌出形式...................................................................................73.3.2瓦斯突出的一般规律.......................................................................73.3.3突出与地质构造的关系...................................................................83.3.4突出与瓦斯压力的关系...................................................................83.3.5突出与地压的关系...........................................................................83.3.6突出与地层的关系...........................................................................93.3.7突出与水文地质的关系...................................................................94高瓦斯隧道灾害的预测及特点.............................................................9中铁七局集团有限公司1新建成贵铁路成都至贵阳线乐山至贵阳段老房子隧道专项安全方案4.1灾害的预测..................................................
