Method for controlling large deformation by releasing pressure of high-stress roadway surrounding rocks

Abstract

The invention belongs to a method for controlling large deformation by releasing pressure of mine high-stress roadway surrounding rocks. The method mainly comprises the following steps: judging whether the pressure of surrounding rocks is high stress or not, determining a pressure releasing opportunity, determining a pressure releasing mode, drilling or pre-splitting, cutting, blasting, releasing pressure, filling a pressure releasing area, monitoring the surrounding rock pressure and deformation. The method is characterized in that the properties of the high-stress surrounding rocks are judged by strength test and component analysis of a roadway surrounding rock sample, the pressure releasing opportunity and the pressure releasing mode are determined through deformation monitoring and experiment research, the pressure is released by adopting a drilling or pre-splitting, cutting and blasting technology in the roadway surrounding rocks, surrounding rock deformation buffer materials are filled in the pressure releasing slot, and a pressure sensor is embedded into the pressure releasing slot and a surrounding rock deformation monitoring section is arranged to monitor pressure releasing effects. According to the method disclosed by the invention, the roadway surrounding rock deformation under high ground stress geological conditions with large embedded depth or non-impact ground pressure of the mine can be effectively controlled, and the roadway in the mine high ground stress environment can be normally used in a production period.

Description

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AI Technical Summary

Benefits of technology

This technology helps control damage caused by rocks that may have been placed inside an excavation during construction work for mining purposes. It also reduces pressure from deeper areas around it while still maintaining its strength when exposed over time.

Problems solved by technology

This technical issue addressed in this patented text relates to improving the strength and durability of tunnel walls due to their tendency towards instabilities caused by external forces like explosion impacts from nearby objects. Specifically, there exist challengings related to maintain stable surround rock movements around these tunnels while also reducing excessive strain applied thereto without causing further damages.

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