基于TWF评价法的煤矿冲击危险性评价

冲击地压作为煤矿生产过程中常见的动力灾害，给煤矿安全生产带来极大威胁，因此，工作面回采前进行冲击危险性评价尤为重要。为构建冲击地压危险性的科学评价模型，本文收集和研究了140个煤矿工作面实例，分析了冲击地压的影响因素，从每个案例中提取14项评价指标，并建立了数据库。基于数量化理论评价法与模糊评价法，建立了适用性更强的TWF（theory of quantification with fuzzy evaluation）评价法，该方法继承了数量化理论和模糊评价法的优势，并将煤矿冲击危险程度划分为5个等级。以河南某煤矿工作面为背景，采用TWF冲击危险性评价模型对该工作面进行了冲击危险性评价，得出危险性指数为19.83，评价结果为无冲击危险性，与现场实际相符，表明该评价模型具有较强的适用性；开发了TWF综合评价系统，持续的案例补充可不断提高TWF评价模型的评价精度，研究成果可为冲击地压危险评价提供一定的理论参考。

Evaluation of impact risk in underground mine based on TWF evaluation method

Rock burst is a common dynamic disaster in the process of coal mine production. It poses a great threat to coal mine safety production. Therefore， it is particularly important to evaluate the impact risk before the mining of the working face. To construct the evaluation model of rock burst risk， this paper collected and studied 140 examples of coal mine working faces. The influencing factors of rock burst were analyzed， 14 evaluation indexes were extracted from each case， and a database was established. Based on the quantitative theory evaluation method and fuzzy evaluation method， the theory of quantification with fuzzy evaluation was established. This method inherited the advantages of the two and divided the risk degree of coal mine impact into five grades. The TWF impact risk assessment model was used to evaluate the impact risk of a coal mine working face in Henan Province. The risk index is 19.83， and the evaluation result is no impact risk. It shows that the evaluation model has strong applicability. The TWF comprehensive evaluation system is developed， and the continuous case supplement can continuously improve the evaluation accuracy of the TWF evaluation model. The research results can provide a theoretical reference for the risk assessment of rock bursts.