降雨条件下风沙区高强度开采对剖面土壤水分的影响∗

摘要

Aiming to study impacts of high-intensive coal mining on vertical soil moisture on the condition of precipitation in windy and sandy region,the paper analyses the impacts of mining on vertical soil moisture distribution in windy and sandy region pre and post precipitation. The results exhibit that the magnitude of impacts of mining activities on soil volumetric moisture con-tent varies in different areas,the impacts of the mining area is greater than that of the post-min-ing area(open-off cut area),while impacts of marginal area is greater than that of the basin floor area. Mining activities have various impacts on different soil depths,and the impacts on surface soil is larger than that of the deep soil. With the completion of mining,there is some recovery of soil moisture,with a rapid recovery rate of the surface soil,and the impact time lasts longer for the deep soil.%为研究降雨条件下风沙区高强度开采对剖面土壤水分的影响，通过采用中子仪对高强度开采过程中表层土壤水分进行动态监测，分析降雨前后开采对风沙区垂直土壤水分变化的影响。研究表明：开采活动对不同区域土壤含水量的影响不同，正在开采的研究区受影响程度要大于采后的开切眼区，且边缘区大于盆底区；开采活动对不同深度土壤含水量影响程度也不同，对表层土壤的影响大于深层土壤；开采结束后，土壤水分有一定的恢复，且表层土壤恢复较快，深层土壤受影响时间较长。