破碎带下磷矿开采诱发地表沉陷的离散元数值模拟

Discrete element numerical simulation of subsidence induced by mining of phosphate rock under fragmentized rock-strip

探讨了破碎带下矿体开采引起地表沉陷的地质现象和产生机理,并介绍了离散元法的原理和常用离散元软件UDEC的特点及其控制参数的选择方法,利用该软件结合某磷矿山的具体工程地质情况,对破碎带下采矿诱发地表沉陷的地质力学现象进行了数值模拟,验证了该机理的正确性。

Mechanism and phenomenon of subsidence induced by mining under fragmentized rock-strip was analyzed in the paper. Theory of discrete element method, software DEC and its control parameters were introduced. The mechanism was testified with discrete element numerical simulation through a practical engineering example.