风沙区井工开采地裂缝对土壤全氮的影响  

The Impact of Ground Crack on Soil Nitrogen in Sandy Area Pit Mining

作　　者：任慧君[1,2,3] 梁宇生[1] 余洋[1,4] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083 [2]中煤科工集团北京华宇工程有限公司,北京100120 [3]中煤科技集团有限公司,北京100013 [4]中国地质环境监测院,北京100081

出　　处：《金属矿山》2017年第2期157-161,共5页Metal Mine

基　　金：国家自然科学基金项目(编号:51174271)

摘　　要：风沙区井工开采地裂缝对区域土壤造成了严重的破坏。以神东矿区某工作面为例,研究分析了该工作面开采后静态裂缝对周围土壤全氮含量的影响规律及影响机理。结果表明:风沙区沙生植被带和人工林带静态裂缝对不同距离土壤全氮含量的影响程度大致相同;距静态裂缝200 cm范围内,土壤全氮含量呈现先降低后增加继而趋于平缓的趋势,而在距离裂缝10 cm处全氮含量出现最大值;裂缝对土壤全氮含量的影响边界在100 cm左右;风沙区沙生植被带和人工林带土壤全氮含量(v)与土壤孔隙度(x)、细砂(0.05~0.25 mm)含量(y)的关系式分别为v=-0.297x+0.004y+0.272,v=-2.181x+0.015y-1.337。研究揭示了裂缝对土壤全氮含量的影响规律及影响机理,为进一步研究薄基岩浅埋深风沙区煤矿开采对矿区土壤质量的影响提供了资料。Taking the Shendong mining area for example,the impact law and the mechanism of static crack on total nitrogen content of the soil around was investigated and analyzed according to the serious damage caused by the sandy area pit mining on soil.The results showed that： the effects of static cracks in psammophytic vegetation area and artificial forest on soil total nitrogen content in different distance are nearly the same; the content of total nitrogen within 200 cm distance of the static cracks is decreased first and increase,and then leveling off in the end,In the distance of 10 cm form the crack,soil total nitrogen content showed a maximum value; The effect boundary of static cracks on total nitrogen is about 100 cm; the relationship formula with soil total nitrogen（ v） and soil porosity（ x）,fine sand content（ y）（ 0. 05 - 0. 25 mm） of desert vegetation and plantation in sandy area were as follows： v =-0.297x＋0.004y＋0.272,v =- 2.181x＋ 0.015y- 1.337. The impact law and mechanism of static crack on total nitrogen content was revealed to provide information for further study of the effect of coal mining on soil quality in the area of thin bedrock with shallow sand mine.

关 键 词：风沙区 静态裂缝 土壤全氮 影响边界 土壤孔隙度 

分 类 号：S153[农业科学—土壤学]