Hole gas drainage pipe prevents collapsing and connecting piece thereof

The utility model discloses a hole gas drainage pipe prevents collapsing and connecting piece thereof, its technical scheme's main points are: take out the bonding portion of putting between the pipe including locating two, the both ends of bonding portion are equipped with the cladding respectively and take out the adapter sleeve of putting pipe end portion, adapter sleeve be the annular and the internal diameter with take out and put the external diameter of pipe and equal. The utility model provides a prevent collapsing hole gas drainage pipe and connecting piece can effectively avoid the gas drainage hole to collapse, do not hinder again to take out from the coal seam and adopt gas. The utility model discloses an another purpose provides one kind to take out the connecting piece of putting the pipe. 本实用新型公开了种防塌孔瓦斯抽放管及其连接件，其技术方案的要点是：包括设于两条抽放管之间的粘接部，所述粘接部的两端分别设有包覆抽放管端部的连接套管，所述连接套管为环形且内径与所述抽放管外径相等。本实用新型提供种防塌孔瓦斯抽放管及连接件，能够有效避免瓦斯抽采孔垮塌、又不妨碍从煤层中抽采瓦斯。本实用新型的另目的是提供种抽放管的连接件。