学科：钻探工程 词目：锚孔 英文：anchor drill hole 释文：义称锚固孔。对岩土边坡、危岩和建筑构件进行锚固工程时,为布设锚杆或锚索而施工的钻孔。亦常用于基坑开挖以及桩、墙、塔架等锚固以增加其稳定性。根据工程需要锚孔可以是垂直拙妒用规格而异。锚孔施工按照地层情况分土锚与岩锚而采用不同钻进工艺方法。如土层用螺旋和气动矛钻进；岩层用冲击回转和空气潜孔锤钻进；复杂地层用跟套管方法钻进等。对锚孔的方向偏差要求较为严格。
砂固结预应力锚杆的锚固力是由砂体与锚孔壁之间的摩擦力提供的。
The anchorage force of consolidated anchorage with prestressed bolt is actually the friction resistance between sand and the wall of drill hole.
预防锚孔弯曲的措施； 破碎带、裂缝带的钻进技术及封孔固壁堵漏技术。
The paper also presents measures for preventing drilling hole curve, drilling technique in broken zone and fissure zone and technique of sealing hole and pluging loophole.
但要从根本上解决进浆管堵塞还需增大一级锚孔孔径或改用无粘结钢绞线材料等。
But for thoroughly solving the problem, the diameter of anchor hole should be enlarged further or non-binding stranded steel wire should be used.
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