人工堆筑景山主要工程地质问题及处置措施研究

Study on Engineering Geological Hazards and MitigationMeasures of Artificial Landscaping

在新的发展理念引导之下,新型城镇化建设过程中人工堆筑景山的应用越来越广泛,其引发的一系列工程地质问题也日益凸显。通过对某人工堆筑景山引发的工程地质问题进行分析,认为堆筑过程中地基不均匀沉降和堆筑体不均匀变形是工程直接面临的工程地质问题,并由此引发堆筑体边坡失稳、附加变形影响堆筑体之上及堆筑体周边一定范围内建构筑物地基变形等一系列问题。针对以上问题,提出了采用1000 kN·m强夯点夯2遍,500 kN·m满夯1遍的地基处理方法,并对堆筑材料、堆筑设备及工艺、工程监测等几个方面提出了具体要求,实施结果表明处置措施合理,可为同类项目提供有益参考。

Under the guidance of a new development concept,the artificial landscaping engineering projects are widely used in the urban construction,and the correspondent engineering hazards are also significantly increasing.In this paper,the engineering geological hazards in an artificial landscaping project is analyzed,and it is considered that differential settlement of the soils and the deformation of filled body in the construction are the direct engineering geological hazards encountered.The correspondent slope instability and excessive deformation at the surface and within the fills as well as the deformations in structures near the fills are the direct concerns.To minimize these potential hazards,the dynamic compaction method was utilized by using the compaction energy of 1000kN.m for two passes with a grid pattern.The footprint compaction that using the compaction energy of 500 kN.m.The artificial landscaping filling material,construction equipment,construction technique and construction monitoring measures are discussed in the paper.The results are satisfactory.