Site Verification of Stress and Energy Field Evolution in MRADS Decompressed by Waterjets
Waterjet pressure relief technologies in the typical specifications of both hydraulic directional slitting and rotary grooving can effectively free coal mass with main rock burst activity domain system (MRADS) from its internal accumulated pressure so as to attain the purpose of both energy dissipation and stress transfer. Thus, these technologies are expected to become effective means for rock burst treatment. To verify this on site, in this chapter, we introduce our specifically developed waterjet coalbed pressure relief system and conduct on-field experiments on the energy dissipation and stress transfer under MRADS pressure relief using related electromagnetic radiation (EMR) measures in Huozhou Coal and Electricity Xinzhi Coal Mine and Yi Coal Group Yuejin Coal Mine, China.
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