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| 测量参考点在硐室爆破发生意外情况时，为了确认原有硐室和导硐的位置而设置的测量基准点,在相应的测量范围内,至少要有3个以上的测量参考点,以便复测时能找到原有硐室和导硐的位置。这些参考点应设置在不会被其他硐室爆破移动和爆堆埋没的地方 | |||
| surveying reference point: 2 phrases in 1 subject |
| Technology | 2 |
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