摘要
充填料浆与挡墙作用机理复杂,充填挡墙的稳定性直接影响采充周期和回采安全。根据静水压力理论对料浆高度低于挡墙和高于挡墙2种情况分别进行了力学分析,同时计算出了最大扭矩作用点。对挡墙构筑工艺,包括位置选择、钢丝绳紧固及挂网、木板安装及尼龙布铺设工艺进行了详细阐述。理论分析及现场应用表明:挡墙应力集中表现在2 m高度范围内,底部可适当加固。轻型挡墙制作周期短,大大缩短了采充循环时间,为安全回采提供了可靠保障。
There is a complex interaction mechanism between filling slurry and retaining,and the stability of filling retai- ning wall has a direct influence on mining and filling cycle and mining safety. According to the theory of hydrostatic pressures, the mechanical analysis of the two kinds of slurry height which one was higher than filling retaining wall and the other was low- er than retaining wall was carried out. In addition, its maximum torque point was calculated. The construction techniques of the retaining wall, including position selection, wire rope fastening and hanging net, wood board installation and nylon cloth laying process were described in detail. Theoretical analysis and field application showed that the stress concentration of the retaining wall was expressed in the height range of 2 m and the bottom can be properly reinforced. The production cycle of light retaining wall was short, greatly reducing cycle time of mining and backfilling and providing a reliable guarantee for safe mining.
作者
程海勇
吴爱祥
罗淦华
王贻明
Cheng Haiyong Wu Aixiang Luo Ganhua Wang Yiming(School of Civil and Environment Engineering, University of Science and Technology Beijing, Beijing 100083, China Key Laboratory of High-Efficient Mining and Safety of Metal Mines, Ministry of Education, Beijing 100083, China)
出处
《金属矿山》
CAS
北大核心
2016年第9期58-61,共4页
Metal Mine
基金
国家自然科学基金项目(编号:51574013
51374034)
关键词
充填挡墙
力学分析
膏体
全尾砂
工艺优化
Filling retaining wall
Mechanics analysis
Paste
Unclassified tailings
Process optimization
