关键词: 层次分析法, 熵权法, 组合赋权模糊综合评价, 环境保护

Abstract: High-intensity mining of coal resources is easy to induce typical geological disasters such as surface subsidence and ground fissures，which seriously damages the ecological environment of the min⁃ ing area and restricts the green and sustainable development of the mine. At present，there are obvious un⁃ certainties and nonlinear problems in the evaluation system of coal mine geological environment protection technology. A single evaluation method cannot take into account both subjective experience and objective data，and the evaluation results are one-sided and limited in credibility. In order to realize the scientific and quantitative optimization of mining area governance technology，this paper combines analytic hierar⁃ chy process and entropy weight method to construct a combination weighting system with subjective and ob⁃ jective coupling，which effectively makes up for the application defects of single weighting method. Based on the fuzzy mathematics theory to deal with the fuzzy interference factors in the evaluation process，a com⁃ bination weighting-fuzzy comprehensive evaluation model including three first-level indicators of technolo⁃ gy，environment and benefit and 14 second-level indicators is established. Taking the geological environ⁃ ment restoration project of Xinzhuang Coal Mine as an example，the comprehensive application effects of three mainstream treatment technologies，such as deep excavation and shallow cushion，coal gangue back⁃ filling and land leveling，are systematically compared. The measured evaluation results show that the scores of the three types of treatment schemes are 8.465 6，5.742 7 and 6.568 8 respectively，and the com⁃prehensive advantages of the deep excavation and shallow cushion scheme are the most significant. The evaluation logic of the model is rigorous and the results are in line with the engineering practice，which can provide reliable quantitative technical support for the optimization and selection of geological environ⁃ ment treatment schemes and ecological restoration in similar coal mining areas.

Key words: analytic hierarchy process, entropy weight method, combination weighting-fuzzy compre? hensive evaluation, environmental protection