风化煤矸石入渗规律模拟

 利用室内模拟实验研究4种密度(1.20、1.30、1.45和1.55g/cm3)及3种煤土体积比(1∶0.5、1∶1.0、1∶2.0)条件下风化煤矸石的渗透规律。结果表明:随着密度的增大,煤矸石的渗透速率迅速减小,密度为1.20g/cm3煤矸石的初始渗透速率、稳渗速率和平均渗透速率分别是密度为1.30 g/cm3煤矸石的2.211、.92和2.30倍,分别是密度为1.55g/cm3煤矸石的60.00、102.54和129.13倍,且减小关系呈幂函数关系;随着煤土体积比的增大,煤矸石的渗透速率迅速减小,煤土体积比为1∶0.5煤矸石的初始入渗速率、稳定入渗速率和平均入渗速率分别是煤土体积比为1∶1.0煤矸石的1.05、1.23和1.42倍,分别是煤土体积比为1∶2.0煤矸石的3.98、1.45和3.18倍;在密度为1.20和1.30g/cm3及煤土体积比为1∶0.51、∶1.0的情况下,用通用经验公式和考斯加可夫经验公式表达煤矸石的入渗过程较为理想,而在密度为1.45和1.55g/cm3及煤土体积比为1∶2.0的情况下,用通用经验公式与实测数据的拟合度表达最好。

Infiltration laws of weathering gangue

This paper deals with the weathering gangue infiltration laws of four densities (1.20 g/cm³,1.30 g/cm³,1.45 g/cm³,1.55 g/cm³) and three kinds of mixed ratio(1∶0.5,1∶1.0,1∶2.0).The results showed that as the density increasing,infiltration rate of gangue decreases fast: the starting infiltration rate,constant infiltration rate,average infiltration rate of 1.20 g/cm³ are 2.21 times,1.92 times,2.30 times as large as those of 1.30 g/cm³ respectively,are 60.00 times,102.54 times,129.13 times as large as those of 1.55 g/cm³ respectively,and the relation between density and infiltration rate is the power function;As the mixed ratio increasing,infiltration rate of gangue decreases fast: the starting infiltration rate,constant infiltration rate,average infiltration rate of the mixed ratio(1∶0.5) are 1.05 times,1.23 times,1.42 times as large as those of the mixed ratio(1∶1.0) respectively,are 3.98 times,1.45 times,3.18 times as large as those of the mixed ratio(1∶2.0) respectively;Under the density of 1.20 g/cm³,1.30 g/cm³ and mixed ratio of 1∶0.5,1∶1.0,the ideal formula to express the process of infiltration is universal empirical formula and Kostiakov formula,under the density of 1.45 g/cm³,1.55 g/cm³ and the mixed ratio of 1∶2.0 the best formula is the universal empirical formula.