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通过北宿煤矿村庄下双对拉工作面开采的地表移动观测，探讨了地表移动变形与房屋变形及其裂缝发育宽度之间的关系，获得了预测房屋裂缝宽度的典型曲线．该曲线可以对房屋裂缝的发育规律作出较为精确的定量预测，对房屋将出现的最大破坏程度有充分的估计．最后，给出了动态下沉系数和水平移动系数的修正公式．
By observing the surface movement of double-pull working face under the village of Beisu Coal Mine, the relationship between the surface deformation and the deformation of the house and the width of the crack is discussed, and the typical curve of the crack width of the house is obtained. The curve can make a more accurate quantitative prediction of the crack growth pattern and give a full assessment of the maximum extent of damage to the house. Finally, the formulas of dynamic subsidence coefficient and horizontal movement coefficient are given.