厚松散层矿区采动岩土体移动规律模拟试验研究  

Model Test for Mining-Induced Movement Law of Rock and Soil Mass Under Thick Unconsolidated Layers

作　　者：刘义新[1,2] 戴华阳[2] 姜耀东[1] 

机构地区：[1]中国矿业大学力学与建筑工程学院,北京100083 [2]中国矿业大学地球科学与测绘工程学院,北京100083

出　　处：《采矿与安全工程学报》2012年第5期700-706,共7页Journal of Mining & Safety Engineering

基　　金：国家"十一五"科技支撑计划项目(2007BAK28B03);博士学科点专项科研基金项目(20110023110014)

摘　　要：为揭示厚松散层矿区采动影响下上覆岩土体双层介质移动机理,对厚松散层下采煤岩土体的沉陷规律进行了模拟研究,并用实测资料进行验证。试验得出了厚松散层矿区采动影响下岩土体沉陷规律,并与一般条件下开采沉陷规律进行比较,指出松散土体沉陷规律有其特殊性。通过对岩土体沉陷值和采动程度的比较,表明了基岩体对地表沉陷的控制作用,阐述了基岩面移动盆地和地表移动盆地的差异性,揭示了采动影响下岩土体移动机理,为厚松散层矿区沉陷预计、受护物防护及矿井安全高效开采提供一定的参考依据。To reveal the movement characteristics of rock and soil mass due to underground mining under thick unconsolidated layers, which are different from those of normal condition mining, the simu- lated material model test was employed to simulate the rock and soil mass movement laws in this paper, and the model test data were then compared with field subsidence monitoring measurement. Thus, the mining-induced movement laws of rock and soil mass in mining areas with thick unconsolidated layers are obtained, and the particularity of subsidence laws for loose soil mass is pointed out, when compared with the laws of normal condition mining. Through the comparison with the subsidence values and mining degree of rock and soil mass, the controlling role of bedrock on surface subsidence is shown, then the difference of movement basins in bedrock surface and ground surface is described, and the movement mechanism of rock and soil mass is finally revealed. The results can provide reference for subsidence prediction, object prevention, safety and high efficiency mining in thick unconsolidated mining area.

关 键 词：厚松散层 开采沉陷 双层介质 模型试验 

分 类 号：TD325[矿业工程—矿井建设]