| No.1 deposit body's deep alley of Jinchuan mining district has extended to 850 metres and has exceeded 900 metres in deep. Part of projiects have extended750 metres. The alley has exceeded 1000 metres. When the exploitationextends and stress becomes big, the environments of alley have changed.The stability of alley has become worse. Besides,grown-up rocks have squirined, the deformation of alley is increased. At the same time, the alley is full of groundwater. They all increase unstability.Central minerals are exploited, stress becomes intense. The alley is affected intensely. According to investigation, the deformation ofdeep alleyis happening quickly,even though super supportion is used. some of districts are destoryed. They are repaired again and again.Some of districts have been built for several yeas. They have been repaired for several times.But it is difficult to control the deformation It affects the use of projects that should be finished on time. The danger Of alley often takes place in mining production. It greatly affects common production in mining districts.The essay combines the analysis of surrounding rock and filling body stability. The essay aims directly at the problem of alley because of the exploitation ofJinchuan nickel mining district. I study geological condition and the result of rock mechanics. I carry out deformation inspection and level inspection. I use ANSYS softwareto simulate 1150 level transport alley. Iraise advice of supporting Jinchuan nickel mining district's alley. |
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