厚夹矸煤层综放开采岩层移动的相似模拟  

Similar simulation on strata movement of fully-mechanized caving mining in thick coal seam with thick dirt band

作　　者：陈海波[1] 曹仁举 

机构地区：[1]黑龙江科技大学矿业工程学院,哈尔滨150022

出　　处：《黑龙江科技学院学报》2013年第6期514-518,共5页Journal of Heilongjiang Institute of Science and Technology

基　　金：黑龙江省教育厅科学技术研究项目(12511482)

摘　　要：针对综放开采技术在结构复杂煤层中应用效果不理想的情况,通过相似模拟实验研究结构复杂厚煤层综放开采时厚夹矸层、顶煤及顶板岩层的移动特征。结果表明:含厚夹矸层厚煤层顶煤冒放性较差,其位移显著增加的位置更接近于煤壁;顶煤破碎受夹矸层厚度的影响较大,夹矸层达到一定厚度,顶煤放出效果不理想,直至不能放出。开采模拟观测和实测数据分析结论基本一致。该研究为扩大放顶煤安全高效开采范围提供了参考。Aimed at improving the performance of the fully mechanized caving mining technology, as in the case of structurally complex coal seams, this paper, based on similarity simulation experiment, in- vestigates movement characteristics of thick dirt band, top coal, and roof rock with structurally complex thick coal seam subjected to fully mechanized caving mining. Research shows that： thick coal seam with thick dirt band shows a more sublevel caving; position with significantly increased displacement gets much closer to the coal wall; and the top coal breaking is subjected more to thickness of dirt band, so that, in the case of dirt band of a certain thickness, sublevel caving is found to occur with little or no effect. Mining simulation observation analysis is basically consistent with measured data analysis. This study may provide a reference for the safe and efficient expansion of sublevel caving mining area.

关 键 词：岩层移动 综放开采 夹矸 厚煤层 相似模拟 

分 类 号：TD823.49[矿业工程—煤矿开采]