一种复杂巷道围岩分级支护方法
By implementing graded support for the surrounding rock and adopting measures such as monitoring, anchor bolt support, grouting, shotcreting, and borehole pressure relief, the problem of ineffective support for the surrounding rock in deep roadways has been solved, thereby improving the bearing capacity of the surrounding rock and saving support costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ANHUI UNIV OF SCI & TECH
- Filing Date
- 2023-10-08
- Publication Date
- 2026-07-17
AI Technical Summary
In the process of coal mining, as the roadway depth increases, the effect of ordinary rock bolt support technology is not obvious and the cost is high. There is an urgent need for a graded support method for surrounding rock to improve the support effect and save costs.
By monitoring the stress and deformation of the surrounding rock, the surrounding rock is classified into four grades: Q1, Q2, Q3, and Q4. Different support methods are adopted, including anchor bolt support, grouting, shotcreting, borehole pressure relief, and support mesh laying. Combined with self-drilling hollow grouting anchor bolts and support arches, graded support is carried out.
It significantly improves the bearing capacity of the surrounding rock, suppresses discontinuous expansion deformation, ensures the long-term stability of the anchor bolts, reduces support costs, and guarantees support effectiveness.
Smart Images
Figure CN117189175B_ABST