Evolution of supporting theoretical study and destroy mechanism of laneway in high stressed soft rocks;

Research on the Failure Causes and Rehabilitation for the Deep Used Roadway with High Stress through Several Repairs;

Support of filling behind brickword for high stress soft rock;

Research of diamond weak combined bit for high geo-stress stratum drilling;

Dynamic emulation analysis on tunnel excavating effect in high geo-stress zone;

Xiabandi Water Control project is located at Pamirs,near an active seismic zone and within a high geo-stress area;for which the maximum embedded depth of the power tunnel is up to 1 400 m with the problem of high geo-stress.

Study on observations on underground pressure of special thick seam at full seam gateway in high stress area;

It is found in this paper that fractured zones of rock masses in high stress area are larger than those of others,but their horizontal displacement does not increase obviously.

Through comparative analysis, this paper expounds the feasibility of adopting roofbolt supporting technique in coal road of high stress areas, and introduces the forms, technical parameters and construction techniques of roofbolt support.

Practices on dynamic prevention and control of pressure bump in high stress zone of Sanhejian Mine;

Destruction characteristic analysis of rock mass under high ground stress

Through site investigation and relevant study,the roadway deformation characteristic and the cause,the factors of inflencing roadway stability,and the instability model of Jinchuan high ground stress roadway were analysed in this paper.

Due to the complexity of occurrence condition and the polytropy of influencing factors,the excavation and supporting in soft failure roadway under high ground stress become very difficult.