若在勘察设计中发现某路基附近有溶洞发育,以测定溶洞顶板岩层厚10m,表土层厚 4.0m,当路基边缘至溶洞边缘距离不小于( )m时,该溶洞可不实施处理措施。...

作者: rantiku 人气: - 评论: 0
问题 若在勘察设计中发现某路基附近有溶洞发育,以测定溶洞顶板岩层厚10m,表土层厚 4.0m,当路基边缘至溶洞边缘距离不小于( )m时,该溶洞可不实施处理措施。(注:岩石内摩擦角取40°,安全系数取1.2) A. 7.5 B. 8.5 C. 9.5 D. 10.5
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答案 A
解析

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