怎么没有人回复呢?难道大家都是搞煤矿的? ,5.ve)/dE
我只知道我们选择采矿方法时,如果地表有主要建筑物和铁路之类的,我们就不选择空场法和崩落法,都必须用充填法,可是我们的采矿沉陷应该如何处理呢?请求群里高手指教啊! um~U_&>
自己查到了北美著名的McIntosh Engineering 采矿公司的Hard_Rock_Miners_Handbook这本书的,他对采矿沉陷的介绍只有一点点,并且还没有正式出版,只是在书的待续目录里有,先奉献上: p{gJVP#l'Z
2.21 Subsidence pkQEry&Z
In Block Caving mines, it is typical that the cave is vertical until sloughing is initiated G[GSt`LVS`
after which the angle of draw may approach 70 degrees from the horizontal, particularly @-)jU!
at the end of a block. X)P9f N~7
Source: Fleshman and Dale 4@-
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2.22 Subsidence ;.+sz(:hm
Preliminary design of a block cave mine should assume a potential subsidence zone of 0@k)Cz[0;
45-degrees from bottom of the lowest mining level. Although it is unlikely that actual I'm.+(1m,
subsidence will extend to this limit, there is a high probability that tension cracking will B
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result in damage to underground structures (such as a shaft) developed within this zone. WZ>
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Source: Scott McIntosh r Z%l?(
2.23 Subsidence v25]}9 /C
In hard rock mines employing backfill, any subsidence that may occur is always vertical bkTk:-L5:
and nothing will promote side sloughing of the cave (even drill and blast). w*n@_n={
Source: Jack de la Vergne