摘要
为了研究平煤股份十矿己15组煤层顶板岩石的长期强度,以及顶板岩体在加、卸载过程中表现出的蠕变特性,利用煤岩三轴流变试验机进行了系列研究,测定岩石在一定条件下的蠕变强度,确定岩石试件在蠕变条件下的变形情况与时间的关系。研究结果可为顶板沉降预测、直接顶垮落步距研究以及长期稳定性评价提供依据。
For studying long-term strength of seam roof rock in group F15 of mine No. 10 of China Pingmei group and creep characteristics of roof rock mass during loading and unloading. A series of studies are implemented through independent development a microcomputer control coal triaxial rheological testing machine, so as to test creep strength of rock under certain condition and determine relationship between deformation under creep condition and the time of rock sample. The results of this study may provide the basis for forecasting roof subsidence, researching of immediate roof caving step distance and long-term stability evaluation.
出处
《煤炭技术》
CAS
北大核心
2015年第12期27-28,共2页
Coal Technology
