摘要
在分析以榆树湾煤矿为代表的厚土层浅埋煤层的地质资料的基础上,采用岩石破裂过程的分析软件RFPA进行数值模拟.得出了冒落带高度为31m,裂隙带带高度为90m,弯曲下沉带为35m左右,研究结果表明:该矿的上覆岩层的采动变化与常规矿相似,并没有出现浅埋煤层的上覆岩层"三带合一"的现象;通过经验公式计算的导水裂隙带高度为70～100m,裂隙带并未沟通含水层,研究结论厚土层浅埋煤层可以达到保水采煤的目的.
Based on the analysis of the geological data from Yushuwan Coal Mining, which is of a typical thick overburden and shallow coal seam situation, this study conducted numerical simulations by using RFPA-a rock failure process analysis software. The results of the simulation are 3 lm for the height of the caving zone, 90m for the height of fractured zone and about 35m of bending sinking zone. This study shows that movement of the overburden caused by mining is similar to that of conventional coal mine, and the ＂three-with-one＂ phenomenon that comes with the overburden of shallow seam did not occur in this study. With the empirical formula, the calculated height of water flowing fractured zone is between 70m andl00m, and the fractured zone did not reach the aquifer. The study concludes that the thick overburden and coal seams can achieve the objective of underwater coal mining.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2013年第6期741-744,共4页
Journal of Liaoning Technical University (Natural Science)
关键词
厚土层
浅埋煤层
保水开采
数值模拟
经验公式
冒落带
裂隙带
弯曲下沉带
Thick soil
shallow coal seam
preserved mining
numerical simulation
Empirical formula
Cavingzone
fractured zone
bending sinking zone.
