The utility model relates to a system used for immediately closing a waterproof gate of various belt conveyor tunnels in the mine well .

本实用新型涉及矿井井下各类 带式输送机巷道 防水闸门即时关闭的系统。

Under certain coal-preserving mining and roof managing condition the direct reason that affects waterproof bottom pillar is how the collapse belt is developed in the shallow part and the main factors that affect the height of collapse belt is the engineering-geological features of roof and overlying rock .

在一定的煤层赋存状况和开采方法、顶板管理条件下，影响浅部 防水安全煤柱的直接原因是冒落 带的发育状况，而影响冒落带高度的主要因素是覆岩的工程地质特征。