hardrock

Research on hardrock step control blasting technology

硬岩台阶控制爆破技术研究

Rockburst is one of important geological disasters in deep hardrock mining excavation .

岩爆是深井硬岩矿山开采中的重要地质灾害之一。

A study of the stability of a deep-buried hardrock tunnel with low horizontal ground stress

深埋低水平地应力硬质岩隧道稳定性研究

The surrounding rock of tunnel body is hardrock , and the geological structure is complex .

洞身围岩岩质坚硬、地质构造复杂。

New developments in hardrock continuous mining abroad

国外硬岩连续采矿技术的新发展

Support of burst prone drift in deep hardrock mines

试论深井硬岩矿山岩爆巷道支护

Based on the disturbance and damage analysis of tunnels surrounding rock due to excavation , the mechanism of instability of deep-buried hardrock tunnels is examined with catastrophe theory .

在分析隧道开挖引起围岩扰动和损伤的基础上，运用突变理论探讨了深埋硬岩隧道失稳的机理；

Results show that the instability of deep-buried hardrock tunnels is not only influenced by rock mass characters and loads , but also related with the ratio of the stiffness of elastic regions over the stiffness of plastic regions .

结果表明：深埋硬岩隧道的失稳不仅受岩体特性及所受载荷的影响，而且与围岩中弹性区刚度和塑性区刚度的比值有关；