We have also introduced the knowledge of U-shaped underground roof support before, knowing that it is mainly used for mine roadway, secondary support of mine roadway, and support and support of mountain tunnels. Since it is used in mines, more attention should be paid during construction. How to install the U-shaped tunnel roof support to be safe?
First of all, we need to find the accurate position of the support arch socket according to the center line of the U-shaped tunnel roof support and the size of the design shed distance, and dig the column socket according to the mid-waist line, with sufficient depth. Then, draw the position of the waistline on the legs of the column, place the column in the socket of the column, and fix the column with a tie rod to prevent it from tilting.
Then, draw the center line position on the top beam, and put the top beam on the column. The overlapping length of the other two legs is generally 450mm. At this time, the column can be temporarily stabilized to prevent the top beam from swinging and a U-shaped support arch accident.
Furthermore, after erecting the U-shaped underground roof support, check the verticality and torsion of the bracket, and make timely adjustments beyond the standard range. Between the shed and the shed, a metal tie rod is tightly pulled by a bolt clamping plate to make support arch more stable.
Of course, this is only the procedure for installing the U-shaped tunnel roof support under normal circumstances. When encountering special circumstances, we must learn to adapt to circumstances. In fact, this is just a simple summary, and we must pay more attention to some of the small details.
