One mine has the following problems that broken surrounding rock,badly damaged roadway bolting and metal mesh,high rework frequency,and so on,to solve all the above-mentioned problems,the blasting vibration and mechanism analysis for the interaction of surrounding rock and foundation supporting was applied to analyze the reasons of support failure,and it is proposed an optimized support working procedure of spraying bolting and metal mesh"mining must be accompanied by supporting and spraying process".When pumice stones of the newly excavated roadway were cleaned,first,spraying a layer of concrete with a thickness of 50～100 mm,then installing a steel mesh and anchor bolt support,and finally spraying a layer of concrete with a thickness of 50～100 mm.It proved the supporting effect can be increased,the roadway surrounding rock stability can be maintained by adjustment and optimization of the construction sequence,when the feasibility analysis and on-site industrial test were finished,on the basis of the original supporting process and supporting materials,It saves about ¥86 142.71 yuan compared with the current supporting procedure,the study results can be provided to similar mines as the reference.
关键词
支护破坏/支护工序优化/技术可行性分析
Key words
broken support/support working procedure optimization/technical feasibility analysis
维普
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