摘要
Abstract
To find out the engineering geological characteristics of a precision instrument construction project,applications were made of drilling,geophysical exploration and wave velocity measurement.The stability of the site,uniformity of the foundation,and seismic stability were evaluated.The most unfavorable rock and soil structural planes of the excavation slope were analyzed with the stereographic projection method.The stability of reserve mountain slopes and backfill slopes were evaluated by circular arc sliding method.The results show that the stability of the engineering site is good,and the dip angle of the combined intersec-tion of structural planes of the excavated slope is larger than that of the slope,so the whole slope is stable.The stability safety fac-tor of reserve mountain slope meets the allowable value of the code.After the backfill slope is treated with anti-slide piles,the safety factor of slope stability is 1.436,which meets the requirements of the code.The maximum settlement of the foundation during the construction period is about 250 mm.The research results have reference significance for the study of site selection and stability of similar precision factory projects.关键词
精密仪器场地/地质特征/边坡/极射赤平投影,圆弧滑动法/稳定性分析Key words
precision instrument site/geological characteristics/slope/polar equatorial projection/circular arc sliding method/stability analysis
