摘要
解决顶板问题离不开对顶板岩层结构的窥视勘探,基于多参数多角度识别顶板结构的钻进模拟系统对不同特征岩石进行钻进模拟试验。研究分析了钻孔破岩过程中的主要影响因素和钻进过程中的能量损耗问题,推导出了岩石的单位体积破碎比功值,并提出以岩石的抗压强度作为识别参数进行拟合的方法,通过模拟试验探究了各钻探参数之间的定性关系以及单位体积的破碎比功值η与抗压强度的关系。
The solution to the roof problem cannot be separated from the peep exploration of the roof rock structure.Based on the drilling simulation system with multi-parameter and multi-angle identification of roof structure,drilling simulation tests was conducted on rocks with different characteristics.The main influencing factors in the process of drilling and rock breaking and the energy loss in the process of drilling were studied and analyzed.The specific work of rock breaking per unit volume was deduced,and the method of fitting with the compressive strength of rock as the identification parameter was proposed.The qualitative relationship between the drilling parameters and the relationship between the specific work of rock breaking per unit volumeηand the compressive strength were explored through the simulation test.
作者
张宏伟
ZHANG Hong-wei(China Coal Energy Group Co.,Ltd.,Beijing 100120,China;Shaanxi Yulin Chemical Energy Co.,Ltd.,Yulin 719054,China)
出处
《煤炭工程》
北大核心
2022年第12期142-147,共6页
Coal Engineering
关键词
煤层顶板
钻进设备
抗压强度
岩石力学性质
coal seam roof
drilling equipment
compressive strength
rocks
mechanical properties of rock
