我矿现使用的单车双层罐笼，由于井筒内淋水较．大，锈蚀严重，再加上进出车时，矿车的不断冲击，造成主竖梁与盘体的联接铆钉十多处松动。严重威胁着我矿的安全生产。按照矿山安全规定，需马上更换罐笼，但是更换罐笼对我矿来说有以下困难：（）当时我矿无备用既笼；（2）此罐 I now use the bicycle double cage, due to the wellbore than water. Large, serious corrosion, coupled with access to the car, the car’s continuous impact, resulting in the main vertical beam and plate coupling rivets more than a dozen loose. Serious threat to mine safety in production. In accordance with mine safety regulations, the need to replace the cage immediately, but the replacement of the cage for my mine has the following difficulties :() At that time, mine without reserve both the cage; (2) This tank