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对于重复采动问题,我们将其概括分为两种情况进行分析,即厚煤层分层重复采动和煤层群自然分层重复采动。目前,在现场限于各种客观原因,取得这方面的观测资料较少,理论研究也很不够。当前各矿区随着生产的不断发展,迫切需要解决这个问题。有鉴于此,我们就现在掌握的部分观测资料和经验进行分析,初步认识到由于井下重迭开采引起地表重复移动的几点规律,提出了重复采动地表最大下沉值的计算方法和经验公式。
For recoverable mining problems, we generalize the analysis into two situations: the reclamation of the thick seam and the reclamation of the natural stratification of the coal seam group. At present, the scene is limited to various objective reasons, to obtain less observational data in this regard, theoretical research is not enough. With the continuous development of production in various mining areas, there is an urgent need to solve this problem. In view of this, we analyze some of the observed data and experiences we now have, initially recognizing the calculation method and empirical formula for the maximum subsidence value of reclaimed ground due to the repeated laws of surface movement caused by the overlapping mining in the mine. .