急倾斜煤层开采在我国占有一定量的比例。在急倾斜煤层开采中,都需要掘进天眼。天眼施工所存在的最大安全问题,就是顶帮容易垮塌,且人员避灾极为困难。特别是遇到有冲击地压煤层或遇到煤层构造松散带,顶帮就更容易发生垮塌。这不仅直接威胁施工人员的安全、而且还影响施工速度,造成采区(工作面)接替紧张,甚至矿井不 Steep coal seam mining in our country occupy a certain amount of proportion. In steep coal mining, you need to dig into the sky. The biggest safety issue that exists in the construction of the eye of the heaven is that the top gang is easy to collapse and the personnel is extremely difficult to avoid the disaster. Especially in the face of the impact of pressure coal seam or met loose coal seam structure, the top is more prone to collapse. This not only directly threatens the safety of construction workers, but also affects the construction speed, resulting in mining area (face) to take over the tension, and even the mine is not