Practical experience of residual pillar resources recovery during old workings close period in Xiangxi Gold Mine was summed up in this paper.
本文总结了湘西金矿老矿山闭坑中充分回收残矿柱资源的实践经验。
The effects of ultrasonic impact treatment (UIT) on the residual stresses of welded rectangular steel (Q345) pillar were investigated.
以Q345钢结构箱型柱为对象，研究了超声冲击工艺对焊接残余应力的影响。
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