充填体压实率对综合机械化固体充填采煤岩层移动控制作用分析  

Strata Movement Control due to Bulk Factor of Backfilling Body in Fully Mechanized Backfilling Mining Face

作　　者：黄艳利[1] 张吉雄[1] 张强[1] 聂守江[1] 安百富[1] 

机构地区：[1]中国矿业大学矿业工程学院,煤炭资源与安全开采国家重点实验室,江苏徐州221116

出　　处：《采矿与安全工程学报》2012年第2期162-167,共6页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(51074165);教育部新世纪优秀人才支持计划项目(NCET-11-0728);江苏省普通高校研究生科研创新计划项目(CXZZ11-0311);江苏高校优势学科建设工程项目

摘　　要：以地面矸石、粉煤灰、黄土等固体废弃物为充填材料的综合机械化固体充填采煤技术为"三下"压煤的安全高效回收创造了条件。结合现场地质条件并根据等价采高的概念,分析了不同矸石与粉煤灰充填体压实率对等价采高的影响规律;并通过数值模拟分析了矸石与粉煤灰充填体不同压实率条件下对综合机械化固体充填采煤岩层移动控制与地表沉陷的控制作用,提出了保持地表沉陷在允许范围之内的充填体压实率为15%;最后通过工程实践得出综合机械化固体充填采煤技术工作面的岩层移动及地表沉陷控制效果良好,基本没有影响到地表的建筑和设施的正常使用,研究成果可为综合机械化固体充填采煤技术的有效实施提供技术参考。Fully mechanized coal mining and backfilling with solid waste,such as waste rock,fly ash,and loess,creates advantages for effective mining of coal under buildings,railroads,and water bod-ies.According to field geological conditions and the equal mining height concept,we analyzed the effect law of the equal mining height arose from different bulk factors of backfilling bodies.Moreover,we numerically simulated the strata movement and surface subsidence control under the condition of different bulk factors,and put forward that the allowable bulk factor of backfilling body is 15% based on allowable ground subsidence.Finally,the engineering application confirmed that the strata move-ment controlling is effective,and the surface buildings and facilities are not severely influenced.The research results has provided references for the effective execution of fully mechanized coal mining with solid waste backfilling.

关 键 词：充填体 压实率 岩层移动 等价采高 数值模拟 

分 类 号：TD315[矿业工程—矿井建设]