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欲保证在高度危险性的无支护天井内的作业安全,须付出极大的劳动量。在矿山企业中,这项作业是用手工进行的,而且从科技文献的分析看来,到目前为止尚无任何机械化方法。用天井壁电热整修法,可消除被一系列裂隙破坏的井周表面层,由此大大降低形成浮石的几率。电热整修井壁的方法依据是:由于岩石表面靠红外线辐射加热而在内部产生热应力。
In order to ensure the safety of work in the highly dangerous unsupported patio, a great amount of labor is required. In mining enterprises, this operation is carried out by hand, and from the technical literature analysis, so far there is no mechanized method. With the patio wall electrothermal renovation method, the well surface layer destroyed by a series of fractures can be eliminated, thereby greatly reducing the probability of pumice formation. The method of electrothermal refinishing of the shaft lining is based on the thermal stress internally generated by the rock surface being heated by infrared radiation.