Practice showed that high pre-stress anchored bolt with high strength was effective method for controlling deformation of deep coal roadway with combined roof above gob.
实践证明，高预应力高强锚杆组合的围岩强化控制技术是控制深井厚复合顶板采空区上方煤巷围岩变形的有效方法。
The theory of residual plastic strain can be used to predict the distortion of simple components, and the reverse deformation is an effective method for controlling the welding distortion.
通过对实例的分析，表明对于简单构件的激光焊接，残余塑变理论可以用来预测变形，反变形法是控制焊接变形的有效方法。
It provides an important reference for choosing welding method and protecting and controlling the welding residual stress and deformation.
研究方法和结果对合理的选择焊接方法、控制和预测焊接残余应力和变形提供参考。
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