Support arch is a kind of passive support for coal mine support. It has high tensile strength and compressive strength, and also has good toughness performance. Support arch has high supporting force

Mine steel arch supports are mainly used in mine tunnels, railways, slopes and tunnels to reinforce the main body of the dam. Its function is mainly to ensure the stability of mine tunnels and undergr

Steel mine supports are commonly used supports in roadway support. Mine supports are mainly used for roof support of coal mine tunnels or roadways. Steel mine supports are formed by heat treatment but

The "U"-shaped design of the tunnel roof support is to achieve a better stress state. These are also uniformly compressed after the wall is filled and compacted, and are used as the surrounding rock p

Underground roof support is one of the main support forms for underground engineering and rock slopes. It plays an important role in the maintenance of civil engineering stability, especially in joint

The mine roof support has retractability and stable and reliable bearing capacity, adapts to the load and deformation of the soft surrounding rock. The stress state of the roof support of the mine is