塌陷区公路路基沉降变形规律模拟  

Simulation study on settlement and deformation of highway subgrade in subsidence areas

作　　者：张向阳[1,2,3] 任尚磊[1] 徐敏 周腾飞 ZHANG Xiangyang;REN Shanglei;XU Min;ZHOU Tengfei(Key Laboratory of Coal Mine Safety and Efficiently Caving of Ministry of Education,Anhui University of Science and Technology,Huainan 232001,China;State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology,Xuzhou 221116,China;State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology,Shandong University of Science and Technology,Qingdao 266590,China;Zhangji Coal Mine,Huainan Mining Group Co.,Ltd.,Huainan 232001,China)

机构地区：[1]安徽理工大学煤矿安全高效开采省部共建教育部重点实验室,安徽淮南232001 [2]中国矿业大学煤炭资源与安全开采国家重点实验室,江苏徐州221116 [3]山东科技大学矿山灾害预防控制省部共建国家重点实验室,山东青岛266590 [4]淮南矿业集团张集煤矿,安徽淮南232001

出　　处：《采矿与岩层控制工程学报》2021年第3期105-112,共8页Journal of Mining and Strata Control Engineering

基　　金：国家自然科学基金资助项目(52074007);安徽省自然科学基金资助项目(2008085ME142);中国矿业大学煤炭资源与安全开采国家重点实验室开放基金资助项目(SKLCRSM19KF006);山东科技大学矿山灾害预防控制省部共建国家重点实验室开放基金资助项目(MDPC201805)。

摘　　要：针对塌陷区上方路基沉降变形问题,以淮南某浅埋厚煤层矿区为研究背景,通过相似模拟与数值模拟进行塌陷区上方不同等级公路铺设模拟,拟探究未支护条件下塌陷区公路路基沉降变形规律,为塌陷区公路的施工建设与后期运营维护提供相应理论依据。试验表明:公路建设等级较高易引起塌陷区活化,进而导致路基产生沉降变形,因此塌陷区公路建设应对其等级进行严格控制;路基垂直沉降主要产生于塌陷区中部位置,沉降保持较明显的整体性,破坏以路基离层为主;水平移动主要出现在塌陷区边缘处,破坏以集中式剪切破坏为主,且受采动影响近开切眼处路基变形破坏程度大于终采线侧;路基侧向变形表现为集中化、区域化,塌陷区边缘区外侧和中部路堤呈压缩变形,而在边缘区内侧路堤呈变形程度较大的鼓胀变形。Aiming at the settlement and deformation of the roadbed above the subsidence area,taking a shallowburied thick coal seam mining area in Huainan as the research background,similar simulations and numerical simulations are used to simulate the paving of different grades of roads above the subsidence area.It is planned to explore the settlement deformation of the roadbed in the subsidence area under unsupported conditions,and provide a corresponding theoretical basis for the construction and later operation and maintenance of roads in subsidence areas.Tests have shown that the higher level of road construction can easily cause the activation of the subsidence area,which will lead to the settlement and deformation of the roadbed.Therefore,the road construction in the subsidence area should be strictly controlled.The vertical settlement of the roadbed mainly occurs in the middle of the subsidence area,and the settlement remains obvious as a whole.The damage is mainly due to the separation of the subgrade.Horizontal movement mainly occurs at the edge of the subsidence area,and the damage is mainly concentrated shear failure,and the deformation and damage of the subgrade near the cut-off cut affected by mining is greater than the side of the stop line.The lateral deformation of the subgrade is concentrated and regionalized.The outer and middle embankments of the collapsed area are compressed and deformed,while the inner embankment of the marginal area is swollen and deformed.

关 键 词：路基 塌陷区 公路等级 移动变形 应力分布 

分 类 号：TD325[矿业工程—矿井建设]