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掘凿岩石至某种程度时,地盘必然发生一种现象,不是自然地支持自体”则是崩落。坚硬的地盘,如果掘凿面积在自然界限内,则将空洞之天盘形成拱状,便能支持地盘自体。中硬与软地盘,一般比较容易崩落,但在安全的观点上,如果需要避免地盘的崩落,则须采用架设支柱,残留矿柱或充填废石等支持的方法。因此,坑内各种采矿的方法,均可归纳于支持采矿法与崩落采矿法二大基本类别之下。支持采矿法又可细分为空洞采矿法与充填采矿法。凡能自然支持自体的采矿法,与用支柱或矿柱支持天盘的采矿法,叫做空洞采矿法;由别处运来充填材料支持犬盘的采矿法,叫做充填采矿法。空洞采矿法在不易崩溃的地盘中,应以硬岩法进行作业,但这样地盘大部分是不规则的,故其采掘方法普通是不一定的。充填采矿法是有规则的划分采矿场,而实行采矿。崩落采矿法则是一般所谓最合标准的采矿方法。
Digging rocks to a certain extent, the site will inevitably occur a phenomenon, not naturally support their own "is the collapse of the hard site, if the digging area within the limits of nature, the days of empty disk will be arch-shaped, it will Can support the construction of the site itself, hard and soft sites are generally relatively easy to collapse, but from a security point of view, if the need to avoid the collapse of the site, you must use the erection of pillars, residual pillars or waste rock and other support methods Therefore, Various methods of mining in the pit can be grouped under two broad categories that support the mining law and the caving mining law, and supporting mining law, which can be subdivided into hollow mining law and filling mining law, Mining methods that use pillars or pillars to support day disks are known as empty mining methods; they are transported elsewhere to support horseriding of the dog disks, known as filling and mining methods. Hollow mining methods should be based on hard rock Method of operation, but most of the site is irregular, so the general mining method is not certain.Filling mining method is a rule to divide the mining field, and the implementation of mining.Calculation mining method is generally Standard mining methods that best fit.