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【多选题】
岩土工程勘探的特点有A.
勘探范围取决于场地评价和工程影响所涉及的空间，除了深埋隧道和为了解专门地质问题而进行的勘探外，通常限定于地表以下较浅的深度范围内
B.
除了深入岩体的地下工程和某些特殊工程外，大多数工程都坐落于第四系土层或基岩风化壳上。为了工程安全、经济和正常使用，对这一部分地质体的研究应特别详细。
C.
为了准确查明岩土的物理力学性质，在勘探过程中必须注意保持岩土的天然结构和天然湿度，尽量减少人为的扰动破坏。为此需要采用一些特殊的勘探技术。
D.
为了实现地质、水文地质、岩土工程性质的综合研究，以及与现场试验、监测等紧密结合，要求岩土工程勘探发挥综合效益，对勘探工程的结构、布置和施工顺序也有特殊的要求。
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