第十三井巷公司,在掘进黄沙坪盲竖井时。曾先后采用架木法全断面一次上掘;小吊罐上掘直径2.1米的小天井,而后向下扩大的方法;大吊罐全断面一次上掘的方法。实践证明,大吊罐法具有掘进速度快、效率高、材料消耗少、成本低、劳动强度小、作业安全等优点。 Thirteenth well lane company, in the tunneling Sha Sha Ping blind shaft. Have been using the whole section of the timber frame on a dig; small hanging pot dig 2.1 m diameter small patio, and then downward expansion method; large crane full section of a dig on the way. Practice has proved that the large jar method has the advantages of fast heading speed, high efficiency, less material consumption, low cost, labor intensity, operating safety and so on.