As we all know, the left-handed rock bolt has high strength, reasonable structure, and large pre-tightening force. It can adjust the direction of the force automatically, increase the restraining force on the surrounding rock, and realize rapid mechanical installation. Left-handed rock bolts can be used as end anchors, extended anchors and full anchors. They are mainly used for high-strength support of high-deformation roadways in high ground pressure mines. Ensuring the stability of mine tunnel and surrounding rock of underground engineering. The structural features of left-handed rock bolts: the full length of the rod body has rolled continuous threads with equal strength throughout.

The success of the application of left-handed rock bolt support in actual engineering depends to a large extent on the reasonable use of engineering technicians' experience and the subjective judgment of objective factors such as geological conditions and lithological conditions. The following are the artificial factors that affect the function of the left-handed rock bolts:

1. The construction personnel who know the law of the appearance of the surrounding rock pressure in the roadway are not comprehensive and accurate;

2. Lack of quantitative grasp of the stability conditions of the roadway;

3. The understanding of the mechanism of left-handed rock bolt is not accurate enough;

4. The understanding of the deformation mechanism, deformation adaptability and evolution mechanism of the anchor structure is not comprehensive and accurate;

5. The understanding of the object and task of left-handed rock bolt support is not clear and specific.

Email: zxminesupport@zxsteelgroup.com

Whatsapp: +86 18236766038