College of Earth Science and Engineering, Shandong University of Science and Technology
College of Energy and Mining Engineering, Shandong University of Science and Technology
Shandong Qiuji Coal Mine Co., Ltd.

区域地面超前注浆是预防底板水害的有效手段,如何利用钻探及注浆施工过程的数据对注浆效果进行客观评价,是目前迫切需要解决的问题。以山东省邱集煤矿1111采区D3,D10,D11和D12地面孔组注浆工程为背景,结合已有研究与现场经验,选取钻井液漏失量、注浆终压、渗透系数以及单位注浆量作为评价指标,建立了注浆效果综合评价体系,提出一种综合改进后的层次分析法与CRITIC客观赋权法的赋权方式,利用算术平均法、几何平均法、特征值法等改进AHP,该方法提高了指标赋权的客观性和科学性;基于组合赋权方式更新了TOPSIS,RSR排序分档的注浆效果综合评价模型,利用相对距离优化了TOPSIS相对贴近度的缺陷,改进了数据处理结果;将评价结果转换为可视化分区图,与注浆后井下钻探揭露涌水量结果进行对比,结果显示该评价方法合理,与工程实际结果较为吻合。

Karst aquifer in the floor is severe theat to deep coal seam mining. Regional ground pre-grouting is an effective means to prevent floor water inundation. How to use the data of the drilling and grouting construction process to evaluate the grouting effect objectively is an urgent problem to be solved. Taking the grouting project of D3, D10, D11, and D12 surface hole groups in the 1111 mining area of Qiuji Coal Mine in Shandong Province as the background, the comprehensive evaluation system of the grouting effect was established by taking drilling fluid leakage, final grouting pressure, permeability coefficient and unit grouting amount as evaluation indexes. An improved analytic hierarchy process (AHP method) combined with the subjective and objective comprehensive weighting method of CRITIC accurate weighting method is proposed. The arithmetic average method, geometric average method, and eigenvalue method are used to improve AHP method. Based on the combination weighting method, a comprehensive evaluation model of the grouting effect based on TOPSIS sorting and WRSR auxiliary grading is established. The relative distance is used to optimize the defect of TOPSIS relative nearness degree and improve the data processing results. The evaluation results are converted into visual zoning maps and compared with water inflow revealed by underground drilling after grouting. The results show that the evaluation method is reasonable and consistent with the field actual results.

国家自然科学青年基金资助项目(52304239);山东省自然科学基金资助项目(ZR2021MD016)

苑尚志,王精华,张伟杰,等.基于组合赋权的TOPSIS-RSR法的煤层底板注浆效果评价体系[J].采矿与岩层控制工程学报,2024,6(3):033537.

YUAN Shangzhi, WANG Jinghua, ZHANG Weijie, et al. Evaluation system of grouting effect of coal seam floor based on TOPSIS-RSR method with combination weighting[J]. Journal of Mining and Strata Control Engineering, 2024, 6(3): 033537.