HeBei Provincial Key Laboratory of Mine Water Disaster Prevention, North China Institute of Science and
Technology College of Safety Engineering, North China Institute of Science and Technology

针对"三下"开采规程中有关导水裂缝带的经验公式已不能完全适应综采条件的现状,通过收集国内大量实测统计数据,在不同覆岩条件下,充分考虑开采厚度、开采深度、煤层倾角、工作面斜长的影响,利用功能强大的SAS数学软件对数据进行了分析。通过不同方法结果对比得出,综采开采条件下"三下"开采规程中导水裂缝带高度经验公式与实测相差较大,优选出综采条件下较为精确的计算经验公式,能满足现场工程实践新要求。

According to Mining regulation under buildings, water body, railway, Practice has proved that the empirical formula for height of water conducted fracture d zone in has been unable to fully meet the requirements for fully mechanized mining.In order to obtain more reliable empirical formulas, this paper collected a large nu mber of domestic statistical data measured at different overburden strata conditions, fully considering the effect of mining thickness, mining depth, coal seam dip, work f ace length, and analysed the data by using the powerful SAS mathematical software.By comparing the results of different methods, this paper summarized that the emp irical formula for height of water conducted fractured zone in under buildings, water, railway had large error at the conditions for fully mechanized mining.Choosing the p recise empirical formula under the condition of fully mechanized mining had a guiding significance for the engineering practice.

国家自然科学基金资助项目(51074075,41072188)；“十二五”国家科技支撑计划资助项目(2012BAK04B04)；河北省自然科学基金资助项目(E2012508001)；