中国安全生产科学技术
中國安全生產科學技術
중국안전생산과학기술
JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY
2015年
1期
104-109
,共6页
张子月%王云广%张志杰%冯婷婷
張子月%王雲廣%張誌傑%馮婷婷
장자월%왕운엄%장지걸%풍정정
塌陷区%高速公路%空间形态%动荷载%扰动深度
塌陷區%高速公路%空間形態%動荷載%擾動深度
탑함구%고속공로%공간형태%동하재%우동심도
subsidence area%highway%spatial shape%dynamic load%disturbance depth
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。
隨著煤礦塌陷區的不斷增多和高速公路的高速建設,高速公路不可避免的穿越塌陷區。通過分析高速公路與塌陷區的空間形態,提齣將塌陷區上新增的路基材料作為靜荷載,將行駛的車輛視為沿正絃麯線運動的動荷載作用在塌陷區上。根據荷載大小分析荷載對採空區上方巖體的擾動深度,通過實例分彆計算得齣攷慮車輛附加動荷載和隻攷慮車輛自重的高速公路對巖體的擾動深度,兩者有一定的差異。在實際工程應用中,應攷慮車輛的附加動荷載,以及高速公路對採空區的擾動深度是否影響到上覆巖層冒落裂縫帶等因素,對保證高速公路的後期穩定性具有重要意義。
수착매광탑함구적불단증다화고속공로적고속건설,고속공로불가피면적천월탑함구。통과분석고속공로여탑함구적공간형태,제출장탑함구상신증적로기재료작위정하재,장행사적차량시위연정현곡선운동적동하재작용재탑함구상。근거하재대소분석하재대채공구상방암체적우동심도,통과실례분별계산득출고필차량부가동하재화지고필차량자중적고속공로대암체적우동심도,량자유일정적차이。재실제공정응용중,응고필차량적부가동하재,이급고속공로대채공구적우동심도시부영향도상복암층모락렬봉대등인소,대보증고속공로적후기은정성구유중요의의。
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.