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

Steel arch support is a kind of steel with a cross-sectional shape like the English letter U. Steel arch support has the advantages of high setting force, strong support strength, easy installation, a

Compared with other rigid supports, mine roof supports are more retractable and stable and reliable in load-bearing capacity, adapt to the load and deformation of soft surrounding rocks, have high sec