仰采综放工作面端面煤岩稳定性及控制研究  

Stability of surrounding rock in head face of upward fully-mechanized caving face and its control technology

作　　者：郭卫彬[1] 鲁岩[1] 黄福昌[2] 刘长友[1] 裴孟松[1,3] 杜英山 

机构地区：[1]中国矿业大学矿业工程学院、深部煤炭资源开采教育部重点实验室煤炭资源与安全开采国家重点实验室,江苏徐州221116 [2]兖矿集团有限公司,山东 邹城273500 [3]河内地矿大学,越南 河内100803

出　　处：《采矿与安全工程学报》2014年第3期406-412,共7页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(51174192);江苏省研究生创新工程项目(CXZZ11-0310);江苏省“333工程”培养基金资助项目(BRA2010024);江苏省高校优势学科建设工程资助项目(SZBF2011-6-B35);泰山学者建设工程专项经费资助项目

摘　　要：为了保障仰斜开采综放工作面煤壁及端面顶板的稳定性,确保工作面的安全高效生产,本文采用理论分析方法分析了仰采工作面煤壁和直接顶的失稳特点,建立了保持煤壁和端面顶板稳定性的力学关系模型和条件,探讨了支架初撑力、立柱前倾角和仰采角之间的相互影响关系。研究得出,当仰采角增大时,提高支架初撑力、减小立柱前倾角,有利于仰斜工作面煤壁及端面顶板的稳定性控制;当仰采角小于11°时,工作面应以控制顶板下沉为主;当仰采角大于11°时,工作面应以控制煤壁片帮和顶板下滑为主。结合某煤矿80113仰采综放工作面的生产地质条件,确定了合理的支架初撑力和立柱前倾角,提出了针对性的端面煤岩稳定性控制措施,保证了工作面的安全高效生产。In this paper, to ensure the stability of the coal wall and head face roof, and realize the safe and high efficient production in the upward full-mechanized caving face, the instability characteristics of coal wall and immediate roof was analyzed, the mechanics model and condition to keep the stability of coal wall and head face roof were established, and the interaction between the setting load of support, the front angle of column, and the upward mining angle was discussed. The results indicate that the in-creasing of upward minging angle, the improving of setting load and the reducion of the front angle of column, are beneficial to control the stability of the coal wall and head face roof. When the front mining angle is less than 11°, the key point is to control the roof subsidence, otherwise, the key point is to con-trol the rib spalling and roof downslide in the face. Combined with the field conditions of No.80113 up-ward full-mechanized caving face in one mine, the reasonable setting load of support and front angle of column were defined, and the pertinence measure to control the stability of surrounding rock was put forward, which has ensured the safe and high efficient production.

关 键 词：立柱前倾角 仰采角 支架初撑力 综放工作面 端面围岩稳定性 

分 类 号：TD323[矿业工程—矿井建设]