摘要
随着煤矿塌陷区的不断增多和高速公路的高速建设,高速公路不可避免的穿越塌陷区。通过分析高速公路与塌陷区的空间形态,提出将塌陷区上新增的路基材料作为静荷载,将行驶的车辆视为沿正弦曲线运动的动荷载作用在塌陷区上。根据荷载大小分析荷载对采空区上方岩体的扰动深度,通过实例分别计算得出考虑车辆附加动荷载和只考虑车辆自重的高速公路对岩体的扰动深度,两者有一定的差异。在实际工程应用中,应考虑车辆的附加动荷载,以及高速公路对采空区的扰动深度是否影响到上覆岩层冒落裂缝带等因素,对保证高速公路的后期稳定性具有重要意义。
With the increase of subsidence areas in coal mine and the rapid construction of highway, inevitably, the highway will come across the subsidence areas. Through analyzing the spatial shapes of highway and subsidence area, it was proposed to take the new adding roadbed material on subsidence area as a static load, and consider the moving vehicles as dynamic load acting on the subsidence area with the sinusoidal movement curve. According to the size of load, the disturbance depth of the load acting on the rock above the mined-out area was analyzed. The differences in disturbance depths were supported by examples that considered vehicles with additional dynamic load and only considered the weight of vehicles on the highway. In practical engineering applications, additional dynam-ic load by the vehicle should be considered, as well as whether the disturbance depth of highway acting on the min-ing-out area will affect the caving slit belt, which is very important to ensure the latter stability of highway.
出处
《中国安全生产科学技术》
CAS
CSCD
北大核心
2015年第1期104-109,共6页
Journal of Safety Science and Technology
关键词
塌陷区
高速公路
空间形态
动荷载
扰动深度
subsidence area
highway
spatial shape
dynamic load
disturbance depth
作者简介
张子月，博士研究生。
