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【多选题】
底板改造施工过程中，以下操作导致可能发生的事故描述正确的是（）。A.
管加固不可靠而钻进可能会发生出现跑水事故。
B.
试压成功而未安装好控制闸阀就钻进可能会发生出无法控制出水量而淹巷道事故。
C.
回风巷钻场不悬挂便携式瓦斯报警仪可能会引起瓦斯事故。
D.
吊挂好而缠绕钻杆可能会发生拉断伤人事故。
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