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AssigneesChina University of Mining and Technology, Yunlong Lake Laboratory of Deep Earth Science and Engineering
InventorsBo Meng, Bangguo Jia, Hongwen Jing, Jingkui Long, Xiaozhao Li, Dajiang Liu, Yanjun Qi, Qian Yin, Jinghua Qi, Yingchao Wang, Tao Wang, Runda Yang, Liang Wen
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A method and device for preventing rib spalling in a high-stress surrounding rock by hydraulic slotting are provided. The construction steps include: obtaining mechanical parameters of a surrounding rock and determine a width of each of pressure relief grooves; opening four drilling holes along an excavation direction of a roadway, and the four drilling holes are arranged at two sides of the roadway in pairs, and two of the drilling holes, located at the same side, are arranged at a bottom and a top of the roadway respectively; hydraulically slotting the drilling holes towards the roadway in a horizontal direction to form the pressure relief grooves; and excavating the surrounding rock to form the roadway, and the roadway is in communication with the pressure relief grooves.
A device for preventing rib spalling in a high-stress surrounding rock by hydraulic slotting, comprising:
Dependencies are inferred from the claim text.