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以神府-东胜煤田补连塔矿风沙区为例,通过野外系统观测,以采煤塌陷后1～4 a的塌陷区和对照(非塌陷区)风蚀侵蚀性因子、塌陷地表土壤特征等因素为参评因子,在各因子等级指标划分的基础上,利用模糊数学理论,建立神府-东胜煤田补连塔矿风沙区风蚀强度评价模型。通过该模型运算,结果表明:2005年塌陷区样地(塌陷1a)风蚀评判综合指数为0.94,属极重度风蚀区;2004年塌陷区样地(塌陷2 a)综合指数为0.7322,属重度风蚀区;2003年塌陷区(塌陷3 a)和2002年塌陷区(塌陷4 a)综合指数分别为0.3881和0.2373,为中度风蚀区;对照(非塌陷区)样地其综合指数为0.0088,属轻度风蚀区。模型运算结果符合实际,说明以模糊数学理论为基础建立的风蚀强度评价模型可靠、可行,可用于指导实践。
Taking the sand-aeolian area of the Shenlian-Dongsheng coalfield in Beiliantai mine as an example, the authors have studied the characteristics of wind erosion in subsidence area and control (non-subsidence area) 1 ~ 4 days after coal mining subsidence and the characteristics of soil surface subsidence Based on the division of each factor grade index, the fuzzy mathematics theory was used to establish the wind erosion intensity evaluation model in the sand-fill area of the Shenlian-Dongsheng coalfield. The results show that the composite index of wind erosion in the subsidence area (collapse 1 a) in 2005 is 0.94, which belongs to the extremely severe wind erosion area. The composite index of the subsidence area (subsidence 2 a) in 2004 is 0.7322, ; The composite indices of the subsidence area (subsidence area 3 a) in 2003 and subsidence area (subsidence area 4 a) in 2002 were 0.3881 and 0.2373, respectively, which were moderately eroded area; the comprehensive index of the control (non-subsoiled area) sample area was 0.0088 Slight wind erosion area. The result of model operation is in line with the reality, which shows that the evaluation model of wind erosion intensity based on fuzzy mathematical theory is reliable and feasible and can be used to guide practice.