The tunnel roof support is subject to high pressure, long support time, easy installation and deformation, so the tunnel top support is mainly used for mine tunnels, secondary support of mine tunnels,
The support arch is a plane compression or bending structure, so it is necessary to set lateral support and ensure the compression stability of the arch outside the axis plane through the purlin or la
The purpose of steel mine support is to solve the shortcomings of the existing technology, thereby improving the safety of underground support. Buffering bearing capacity and tightness to the roof mak
Because the safety requirements of underground roof support are very high, those skilled in the art continue to research and make new improvements on the support structure. The currently widely used U
1. The steel mine supports the foundation pit to be excavated vertically and in layers, and follows the principle of first support and then excavation. The support installation is closely combined wit
In order to further advance the strategic layout of the Group's intelligent manufacturing, China Coal (Yantai) Intelligent Manufacturing Technology Co., Ltd., which was invested and established by Sha
