摘要
针对综采面过逆断层区煤壁易片帮的技术难题,结合邹庄矿3204工作面地质赋存条件和开采实际,采用数值模拟结合现场实测的研究方法,研究了受逆断层影响支架呈现高压特征的覆岩运动剧烈区和平缓区,揭示了断层超前工作面活化、断层区内煤壁易片帮的特点,结合逆断层高压区和低压区支架工作阻力实测结果,得到JF23,JF21逆断层预加固距离分别为22,34 m,数值模拟结果与现场实测情况基本吻合。工作面支架配前伸缩梁,有效解决了断层区煤壁片帮难题。研究结果为工作面过逆断层的预加固距离及液压支架的适应性评价提供了理论依据。
In view of the technical problem of rib spalling when coal face crossing the reversed fault, based on geological and mining conditions in 3204 working face of Zouzhuang coal mine, violent and gentle movement areas of overburden strata with high pressure influenced by reversed fault were studied by using numerical simulation and field measurement, and the characteristics of fault activation advanced coal face and rib spalling around fault was revealed. In addition, according to field measurements of support resistance in higher and lower pressure areas of reversed fault, the pre-reinforced distances for Reversed Fault JF23, JF21 are about 22 m, 34 m respectively, which is consistent with the numerical simulation results. Moreover, by installing scalability beam in hydraulic support, the technical problem of rib spalling was solved effectively. The results provide theoretical basis for pre-reinforced distance determination and support adaptability evaluation when face passing through reversed fault zone.
出处
《采矿与安全工程学报》
EI
CSCD
北大核心
2015年第2期182-186,共5页
Journal of Mining & Safety Engineering
基金
国家高技术研究发展计划(863)项目(2012AA062101)
国家自然科学基金项目(51374200)
江苏高校优势学科建设工程项目
关键词
逆断层
覆岩运动
数值模拟
高压区
reversed fault
overburden movement
numerical simulation
high-pressure zone
