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Section III. ARTIFICIAL ANCHORS
Using artificial anchors becomes necessary when natural anchors are unavailable. The art of choosing and placing good anchors requires a great deal of practice and experience. Artificial anchors are available in many different types such as pitons, chocks, hexcentrics, and SLCDs. Anchor strength varies greatly; the type used depends on the terrain, equipment, and the load to be placed on it.
第三部分:人工保护站
在自然锚点无法使用的时候,就需要使用人工锚点了。如何选择、如何放置好的人工锚点则需要大量的练习和经验。人工锚点的种类有很多,包括岩钉、岩楔、六角形岩塞和机械塞等。各种锚点的优势迥异,而至于使用哪种锚点,则要取决于地形、装备,还有要承受的重量等因素。
10. DEADMAN
A "deadman" anchor is any solid object buried in the ground and used as an anchor.
a. An object that has a large surface area and some length to it works best. (A hefty timber, such as a railroad tie, would be ideal.) Large boulders can be used, as well as a bundle of smaller tree limbs or poles. As with natural anchors, ensure timbers and tree limbs are not dead or rotting and that boulders are solid. Equipment, such as skis, ice axes, snowshoes, and ruck sacks, can also be used if necessary.
b. In extremely hard, rocky terrain (where digging a trench would be impractical, if not impossible) a variation of the deadman anchor can be constructed by building above the ground. The sling is attached to the anchor, which is set into the ground as deeply as possible. Boulders are then stacked on top of it until the anchor is strong enough for the load. Though normally not as strong as when buried, this method can work well for light-load installations as in anchoring a hand line for a stream crossing.
10. 用锚定桩做保护站
“锚定桩”保护站是将任何一种东西埋入地下,并以此来做锚点的保护站。
a. 这个做锚点的东西最好有较大的表面积,且同时具有一定长度。(铁道枕木那样的大木头就非常理想。)可以用大石头来做锚点,同样,也可以将树枝或木棍捆成一捆儿。和使用自然锚点一样,要确保所用木头和树枝都不是枯木或腐木,要确保大石头也是结实的石头。如果有必要,雪板、冰镐、雪鞋和背包等装备也可以用来做锚点。
b. 在那种无法挖坑、又坚硬的岩石地形,为了适应环境需要,也可以将锚定桩保护站建立在地面上。充当锚定桩的物体还是应量埋在地下,用绳套与其连接。然后将大石头压在锚定桩上,直到它足够结实,可以承重。尽管这样的保护站并不如完全埋在地下的“锚定桩”结实,但如果所需负载的重量比较轻的时候,这样的保护站也是管用的,就像过河的时候架设的手拉绳索保护站一样。
