【摘要】 传统的土地复垦一般为事后处理,该方法复垦周期长且土地恢复率低,无法及时保护土壤。随着边采边复理论的提出,边采边复技术在高潜水位地区复垦中展现出一定的优越性。对于井工煤矿边采边复而言,由于要在沉陷过程中采取措施,而不同采深条件下地面沉陷的过程及趋势对复垦时机的影响有所不同,因此对不同采深下边采边复时机的研究显得尤为必要。本文采用室内模拟方法,对单一工作面8个开采阶段在6种采深(500m、600m、700m、800m、900m、1 000m)下的动态沉陷过程进行模拟分析。基于模拟结果得出随着采深增加边采边复时机也相应推迟,并选出各个采深条件下的最佳土地复垦时机。同时发现,该矿区条件下,当采深达到921m以上,采用边采边复与塌陷稳定后治理效果基本相同。更多还原

【Abstract】 The traditional land reclamation is an after-treatment method.This method has a long reclamation cycle and a low land recovery rate,which cannot protect the soil in time.With the introduction of the theory of concurrent mining and reclamation,the concurrent mining and reclamation technology shows certain superiority in the reclamation of high phreatic area.For the concurrent mining and reclamation of coal mines,due to the measures should be taken during the subsidence process,the processes and trends of ground subsidence under different mining conditions have different effects on the timing of reclamation.Therefore,it is especially necessary to study the timing of reclamation under different mining depths.In this paper,the indoor simulation method is used to simulate the dynamic subsidence process of 8 mining stages in6 mining depths(500 m,600 m,700 m,800 m,900 m,1 000 m).Based on the simulation results,it is concluded that the timing of the concurrent mining and reclamation is delayed with the increase of the depth of mining,and the optimal land reclamation timing under each mining depth is selected.At the same time,it is found that under the conditions of the mining area,when the mining depth reaches 921 mor more,it is basically the same effect as in collapse stability reclamation.更多还原