采煤突水安全敏感性的AHP-熵权法分析

以不同矿区综采导水裂隙带高度的实例数据作为分析样本，利用Mathmatica软件对影响采煤突水安全的地质构造条件、岩石力学强度和开挖扰动等因素进行概化分析建立评估模型，运用AHP-熵权理论对导水裂隙带发育敏感性因素进行综合评估，从而对采煤突水安全性进行评价并提出相应的安全措施。研究表明：地下水位和开采厚度是影响导水裂隙带发育的各因素中所占权重最大的2个因素，其次是硬岩系数。地下水位与裂隙带高度大致呈指数增长关系，采厚与裂隙带高度大致呈二次函数的关系。由此可知，控制采厚和留设防水煤岩柱能大大降低导水裂隙带的高度，且优化采煤工作面有利于进一步减少突水灾害。该研究丰富了矿井顶板水害防范的方法，对水体下深部矿井的安全生产具有实际的指导意义。

AHP-Entropy Weight Analysis on Safety Sensitivity of Water Inrush during Mining

Taking instance data of height of water flowing fractured zone from different mining area as analysis samples, the influential factors about geological structure conditions,mechanical strength of rock and excavation disturbance have been analyzed briefly,and the evaluation model has been established by Mathmatica. The sensitivity factors for development of water flowing fractured zone were evaluated comprehensively based on AHP-entropy weight theory so as to evaluate the safety of water inrush during mining and put forward the corresponding security measures. This research indicated that groundwater and mining thickness are the uppermost factors which affect the height of the water flowing fractured zone,and next is the coefficient of hard rock. There is an exponential increase relationship between groundwater level and the height of fractured zone,the quadric relationship between mining thickness and the height of fracture zone is approximately apparent. Therefore,controlling mining thickness and leaving waterproof coal pillar can significantly reduce the height of water flowing fractured zone,optimization of working face will be beneficial to further reduce the water inrush disaster. The method of mine roof flood prevention is enriched by this research. It has practical guiding significance for the safety production of deep mine under water body.