【摘要】 为探讨煤矸石的存在对矿区土壤入渗的影响。采用室内一维定水头垂直入渗试验,对含煤矸石层土柱在3种容重条件下(1.2、1.3、1.4 g/cm~3),按其在土柱中厚度(4、8、12 cm)和位置(上层、中层、下层)的不同,进行土壤入渗规律研究。结果表明(:1)煤矸石位于土柱上层时,厚度增加进一步提高了土壤入渗;位于中层时均抑制了入渗;位于下层时对入渗的影响较小(;2)土壤入渗随容重的增大而减小。同一煤矸石容重和厚度,其位置影响入渗的排序为:上层>下层>中层(;3)本试验所设厚度对土壤入渗影响不显著,而位置和容重影响极显著。通用公式可更好地反映土壤入渗规律。更多还原

【Abstract】 This paper aims to explore the influence of the coal gangue on the soil infiltration in the mining area. By using the vertical infiltration test of indoor one-dimensional fixed-head, we studied the soil infiltration law of coal gangue layer under 3 kinds of bulk condition(1.2, 1.3, 1.4 g/cm~3) according to its thickness in soil column(4, 8, 12 cm) and positions(upper, middle and under layer). The results showed that:(1) when the coal gangue was located on the upper layer of soil column, the increase of its thickness further improved the soil infiltration; then, it inhibited infiltration in the middle layer; and when located on the under layer, it had less influence on the soil infiltration;(2) soil infiltration decreased with the increase of bulk density; at the same bulk density and thickness of the coal gangue, the order of location affecting the infiltration was: upper layer>under layer>middle layer;(3) the thickness set in this experiment had no significant effect on soil infiltration, while the locations and the bulk densities had significant effects on it. The general formula could better reflect the law of soil infiltration.更多还原