矿业科学学报2025，Vol.10Issue(6)：1068-1077,10.DOI:10.19606/j.cnki.jmst.2025149
基于层间岩体损伤的煤层群重复采动影响下中间煤层开采可行性研究
Mining feasibility of middle coal seam in multiple coal seams influenced by the repeated mining based on the damage degree of interlayer strata
摘要
Abstract
Based on a typical middle coal seam with the upper and lower goafs in close-multiple coal seams in Qianjiaying coal mine,the characteristics of the damage degree and the fracture development of the interlayer coal-rock mass were analyzed and the mining feasibility of the middle coal seam with the upper and lower goafs was determined,using a combination method with physical simulation,nu-merical simulation,and on-site measurement.The results showed that:① Due to the repeated mining of the upper and lower coal seams,the average damage degree of the interlayer coal-rock mass in-creased,indicating lower damage degree and good integrity of the interlayer coal-rock mass.② The longitudinal fractures in the interlayer coal-rock mass developed to the immediate floor of the middle coal seam.Longitudinal fractures emerged in each stratum of the interlayer coal-rock mass.No through-fractures were observed in the roof and floor of middle coal seam,or the seam itself.This maintained good continuity and integrity of the seam.③ On-site industrial tests on the mining of middle coal seam showed that the maximum and average shield support capacity remained stable between 20.16～28.88 MPa and 14.83～17.32 MPa.These values never exceeded the rated shield support capacity of ZY4800-13/32 shield.关键词
近距离煤层群/重复采动/中间煤层/损伤程度/开采可行性Key words
close-multiple coal seams/repeated mining/middle coal seam/damage degree/mining feasibility分类
矿业与冶金引用本文复制引用
任玉琦,李杨,雷兴海,王楠,李戬..基于层间岩体损伤的煤层群重复采动影响下中间煤层开采可行性研究[J].矿业科学学报,2025,10(6):1068-1077,10.基金项目
山西省基础研究计划(自由探索类)(202403021222261) （自由探索类）
山西省高等学校科技创新计划(2024L305) （2024L305）
国家自然科学基金(52074293) （52074293）
