基于SPA-CW的冲击地压评价模型

Evaluation Model of Rock Burst Based on SPA-CW

针对煤矿冲击地压评价指标因其模糊性、不确定性和多样性等特点导致评价准确性较低的问题,基于冲击地压机理与发生条件,以开采深度、顶板结构、煤岩力学特性、采煤方法、工作面长度、回采速度、防冲措施等为评价指标,建立冲击地压评价指标体系,基于集对分析理论,并利用熵权法客观性强、层次分析法主观性强的特点进行组合赋权,构建集对分析(SPA)-组合赋权(CW)的冲击地压耦合评价模型。利用该耦合模型对东荣二矿的4条巷道进行冲击地压危险性评价。并与云模型和D-S理论的综合评价模型的危险性评价结果进行比较,评价结果一致,符合现场实际,具有较高应用价值和参考依据。

Due to the ambiguity, uncertainty and diversity of rock burst evaluation index in coal mine, the evaluation accuracy of rock burst is low. Aiming at this problem, based on mechanism and occurrence conditions of rock burst, mining depth, roof structure, mechanical properties of coal rock, coal mining method, length of working face, recovery speed and anti-impact measures were taken as the evaluation indexes. Then, rock burst evaluation index system was established. Based on the set pair analysis theory, the combination weighting was carried out according to the characteristics of strong objectivity of entropy weight method and strong subjectivity of analytic hierarchy process, and the rock burst coupling evaluation model of SPA-CW was constructed. The rock burst hazards of four roadways in Dongrong mine were evaluated by this coupling model. The evalu-ation results of the four roadways were compared with the hazard assessment results of the cloud model and the synthetical e-valuation model of D-S theory. The evaluation results were consistent, which accorded with the actual conditions, with a high application value and reference basis.