Tables S1 - S8 from A multifactor coupling prediction model for the failure depth of floor rocks in fully mechanized caving mining: a numerical and <i>in situ</i> study

To study the mining-induced failure depth of floor rocks in a fully mechanized mining caving field affected by different coal seam pitches, mining face lengths, burial depths and aquifer water pressures, multifactor-coupled orthogonal numerical tests on the failure depth of floor rocks were conducted. The numerical results show that the failure depth of floor rocks increases with increasing mining face length, coal seam pitch and burial depth. According to the relationship between failure depth and these impact factors, a multifactor-coupled prediction model for the failure depth of floor rocks was established. In addition, the in situ measurement of the failure depth of floor rocks in the Yitang Coal Mine in Huoxi coal field in Shanxi Province, China, was performed, and the in situ failure depths of floor rocks in the 100 502 (80 m) and 100 502 (180 m) mining faces were approximately 12.50–14.65 m and 17.50–19.20 m, in good agreement with the results of the multifactor prediction model. Furthermore, the sensitivity of each impact factor in the prediction model of the floor failure depth was further analysed by F-test and range analysis, and the impact order of studied factors on the floor failure depth is coal seam pitch > mining face length > burial depth > aquifer water pressure.为探究不同煤层倾角（coal seam pitch）、工作面长度（mining face length）、埋藏深度（burial depth）及含水层水压（aquifer water pressure）影响下的综采放顶煤工作面（fully mechanized mining caving field）底板岩层采动破坏深度（mining-induced failure depth），开展了底板破坏深度多因素耦合正交数值试验。数值试验结果表明，底板岩层破坏深度随工作面长度、煤层倾角及埋藏深度的增大而增加。基于破坏深度与各影响因素间的关联关系，构建了底板岩层破坏深度多因素耦合预测模型。此外，针对中国山西省霍西煤田义棠煤矿开展了底板岩层破坏深度原位测试（in situ measurement）：该矿100502（80m）、100502（180m）工作面的底板原位破坏深度分别约为12.50~14.65m与17.50~19.20m，与多因素预测模型的计算结果吻合良好。进一步通过F检验（F-test）与极差分析（range analysis），对底板破坏深度预测模型中各影响因素的敏感性进行了分析，得出各研究因素对底板破坏深度的影响排序为：煤层倾角＞工作面长度＞埋藏深度＞含水层水压。