【摘要】 理论计算发现,相同的地温梯度在不同的岩石中引起的温度应力相差很大。在地下矿山地应力计算中,地温梯度对某些岩石的影响可以忽略不计,而在另一些岩石中产生的力学效应非常可观,必须考虑其影响,否则可能会给矿山开采带来安全隐患甚至出现围岩失稳的严重安全事故。东乡铜矿采场顶板锚索加固的试验,验证了这一理论计算结果的正确性。更多还原

【Abstract】 By theoretical calculation,it is found that the same earth temperature gradient leads to the greater difference of temperature stress in different kind of rocks.In calculating ground stress of underground mines,the influence of earth temperature gradient on some kind of rocks can be neglected;but the temperature stress caused by earth temperature gradient in some other kind of rocks are considerable and must be considered,otherwise the hidden danger may exist or even serious safety accidents such as collapse of surrounding rocks may appear in the process of mine extraction.The correctness of the result obtained by the theoretical computation is verified in the experiment of reinforcing the hanging wall of stope with cable bolt in Dongxiang Copper Mine.更多还原