爆破参数对沟谷型铁路隧道弃碴场稳定性影响研究

为探究爆破参数对沟谷型铁路隧道弃碴场稳定性的影响，以西南某铁路隧道弃碴场为例，结合已有施工资料通过现场调查、室内试验、数值模拟的方法，查明了该弃碴场工程地质条件及堆积区域地形地貌，推测出该弃碴场内部结构，得到了相关物理力学参数。基于弃碴场数值模型对其进行了应力应变分析，并对比分析了爆破参数改变后弃碴场的稳定性。结果表明:人为有意改变爆破参数可以增加该类型弃碴场的稳定性。

Study on the Influence of Blasting Parameters on the Stability of Slag Dump of the Valley-type Railway Tunnel

In order to study the influence of blasting parameters on the stability of slag dump of the valley-type railway tunnel, taking the railway tunnel slag dump in southwest China as an example, combining with the existing construction data, by means of field investigation, laboratory test and numerical simulation, the engineering geological conditions and landform of the stacking area of the slag dump are ascertained, the internal structure of the slag dump is inferred and the relevant physical and mechanical parameters are obtained. Based on the numerical model of the slag dump, the stress and strain of the slag dump are analyzed and the stability of the slag dump after the blasting parameters change is compared and analyzed. The results show that the stability of this type of slag dump can be increased by deliberately changing blasting parameters.