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
The tunnel roof support is a steel support provided along the perimeter of the section during tunnel construction. The wood wedges are driven into the surrounding rocks every 100 to 150 cm, which can
Tunnel roof support according to the specific site conditions, the flexibility to choose model, structure form and the tent of u-shape set distance, correctly guiding the construction of the tunnel ro
