盐类矿床群井控制水溶开采溶腔变形数值模拟  

Numerical simulation of cavity deforming under the technology of multi-well controlled solution mining for salt deposit

作　　者：梁卫国[1] 赵阳升[1] 李志萍[1] 

机构地区：[1]太原理工大学采矿研究所,山西太原030024

出　　处：《化工矿物与加工》2003年第3期16-19,共4页Industrial Minerals & Processing

基　　金：国家自然科学基金资助项目 ( 5 0 1740 10 )

摘　　要：在理论分析的基础上 ,建立了岩盐水溶开采的数学模型 ,并对溶腔的变形进行了相应的数值模拟分析。数值模拟结果表明 ,在群井控制水溶开采的情况下 ,岩盐溶腔的变形由裂缝形的扁平盘状、过渡为倒盆状、最后逐渐变为一上口小下口大的锥形形状 ,该形状有利于保持溶腔顶板的稳定 ;注水井周围的溶解速度约为出水井周围的 2～ 3倍 ,随溶采时间的延长 ,整个溶腔内岩盐矿层的溶解速度都在降低 ,在溶采近 10 0h后 ,出水井周围的溶解速度几乎为零 ,在溶采 30 0h后 ,注水井周围的溶解速度降为 0 .In this paper, a mathematic model of solution mining for salt deposit is founded in the base of detailed academic analysis; meanwhile, numerical simulation for cavity deforming is done during multi-well controlled solution mining. The simulation results indicates that the cavity deforms from the first shape of fissure disc to the last taper body, which is propitious to the stabilization of cavity; moreover, it is also found that the dissolving speed near the injecting well is twice times more than that around the outputting wells, and it is decreasing gradually with the time lasting.

关 键 词：盐类矿床 开采溶腔 变形 群井 水溶开采 数学模型 数值模拟 

分 类 号：TD871.1[矿业工程—非金属矿开采]