The determination of damage height of superincumbent stratum of goaf has immense meaning for safety and reasonable exploitation of coal seam under water body, building and railway.
确定采空区上覆岩层破坏高度，对“三下”煤层安全、高效开采具有重要意义。
With the effective seam weld fatigue life prediction method, the fatigue damage and life of the seam weld under actual vehicle operating conditions can be calculated.
采用该方法可计算出真实运行工况下结构焊缝的疲劳损伤和寿命情况。
In this paper, a rheologic damage fracture model for jointed rocks is built and is utilized to analyze stability of seam floor rocks in mining.
本文采用损伤力学的研究方法，建立了裂隙岩体的损伤流变断裂力学模型。
Large mining depth single seam non-full mining, surface structure has only minor extent of damage.
大采深单一煤层的非充分采动，地面建筑物受损程度很小。
Large mining depth single seam non-full mining, surface structure has only minor extent of damage.
大采深单一煤层的非充分采动，地面建筑物受损程度很小。
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