期刊论文

Liu, Y.(liuyong81668@163.com)

中文

采矿与安全工程学报

1673-3363

2013

30

1

74-79

国家自然科学基金项目（10975071,51004067）； 教育部重点基金项目（2011-126）； 高校博士学科点专项基金项目（20104324120001）；

本校为通讯机构

宝山矿西部2#矿体为深部难采矿体,采用废石胶结充填法回采。为确保其回采的安全,采用RMT-150B岩石力学试验机,对7种配比的废石胶结充填体在不同龄期的抗压强度进行了测试,利用龄期为28 d的废石胶结充填体的力学参数对试验采场进行了充填法回采的FLAC3D模拟,根据模拟结果选用C组配比的废石胶结充填体对该矿试验采场进行了充填,同时还对其进行了应力测试。研究结果表明:水灰比和灰砂比是控制废石胶结充填体抗压强度的关键因素;龄期为28 d的C组废石胶结充填体的抗压强度大于2 MPa;采空区围岩的最大主应力和竖向最大位移随废石胶结充填体强度的增加而减小,而最小主应力则与之相反;选用C组配比的废石...

The No. 2 ore body in the western district of Baoshan mine is deep-buried and hard to be mined out, thus, the filling method is adopted by using the backfills of cemented waste rock. In this paper, to ensure the mining safety, the compressive strengths of the backfills with seven different mixture ratios at different solidification durations were measured by using RMT-150B rock mechanics testing machine. In addition, the mechanical parameters for the backfills at the solidification duration of 28 days were used to simulate the mining and filling processes of test stop by using FLAC3D. Based on...