凡口铅锌矿0^#采场垮塌区影响范围数值模拟  

Numerical Simulation on Collapse Area Scope of Fankou Lead-zinc Mine

作　　者：曹铭宇 秦亚光[1] 张杰[1,2] 孙鹏伟[1,2] 陈刚[1,2] 

机构地区：[1]中南大学资源与安全工程学院,长沙410083 [2]凡口铅锌矿,广东韶关512325

出　　处：《有色金属工程》2015年第B05期107-112,共6页Nonferrous Metals Engineering

基　　金："十二五"国家科技支撑计划项目(2013BAB02B05)

摘　　要：凡口铅锌矿Sh-320 0#采场的回采过程中,因出矿不及时而致使该主矿体区成为隐患区域,采用FLAC3D快速拉格朗日差分分析方法对隐患区域稳定性进行数值模拟。结果表明,采空区两帮的最大拉应力达到1 MPa,两帮的最大位移分别为11.6和11.1 cm,顶板位移为8.0 cm,而且出现较大范围的剪切破坏和抗拉破坏塑性区,并且塑性区发生贯通。空区是在两帮充填体受横向拉伸发生垮落,同时顶板发生冒落,最终导致空区的大面积失稳。由数值模拟圈定垮塌区的影响范围,进而得出受垮塌区影响的采场分布。In the mining process of Sh-320 0^# stope of Fankou Lead-zlnc Mine, as mine production is not prompt, the main orebody becomes into the hidden area, so the regional stability is simulated by using FLAC^3Dmethods. The numerical simulation results show that the maximum tensile stress of two sides are reached to 1 MPa, the maximum displacement of two sides are 11.6 and 11.1 cm, respectively. The roof displacement is 8.0 cm. There are the wide range of shear failure and tensile damage plastic zone and the plastic zones are working through. The gob collapse is because of the transverse tensile of the two sides filling body, the roof is simultaneously caving, resulting in the instability of a large empty area. The scope of the collapsed area is defined by the numerical simulation, and the distribution of the influenced stopes is obtained.

关 键 词：稳定性 数值模拟 FLAC^3D 垮塌区 

分 类 号：TD315[矿业工程—矿井建设]