With the development of coal mining enterprises, the use of U-shaped steel arch for mining has become more and more widespread, and its unique construction technology has also been received well by the majority of mining enterprises. U-shaped steel support arches for mines are mainly used in mine tunnels, secondary support of mine tunnels, and support and support of mountain tunnels.

The main characteristics of Mining U-shaped steel arches are: high pressure resistance, long support time, easy installation and deformation. U-shaped steel arches have been used in mining road junctions and have achieved significant results. Selecting U-shaped steel retractable arch can solve the problem of tunneling and support better.

Construction process of Mining U-shaped steel arch:

1. Put the center and waist line; dig the pillar nest; stand shed leg; upper shed beam; reinforce; back plate (filling).

2. Find the position of the pillar nest according to the center line and the design shed distance, and then dig the pillar nest deep enough according to the middle waist line.

3. Draw the position of the waist line on the leg of the column, and put the post in the socket, so that the waist line on the column is consistent with the upper waist line.

4. Fix the column with the pull bar to prevent it from tilting.

5. Check the verticality and skewness of the U-shaped steel arch for mining. If it exceeds the allowable error range specified in the quality standard, adjust it. According to the vertical distance dropped in the middle of the top beam and the horizontal distance between the lines between the two legs Know whether the bracket is vertical, and whether the bracket is skewed according to whether the middle line of the roadway and the line between the two columns are vertical.

6. Backs and tops: When you are backing up the board, fill one piece (fill the gap between the backing board and the rock gang with wooden wedges or fill it with rocks) and check whether the backing board is flat. , The back should be carried out symmetrically on both sides.

7. Apply metal rods between the shed and the shed to tightly hold each other by bolts, plywood, etc. Or you can drive into the pillars to strengthen the support along the roadway.

Email: zxminesupport@zxsteelgroup.com

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