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宝成线K287+094夏家咀隧道全长184.5m,该隧道北端K287+010～+050延长40m范围内左侧边墙开裂外臌,最大水平裂缝达38mm,外臌最多达440mm。我段应用建筑材料研究院研制成功的无声破碎剂,于1984年2月下旬试用成功,至1984年8月中旬,破碎原有混凝土184m~3,这段隧道边墙全部更换完毕,取得较好的效果。充分显示了无声破碎剂这一新型破碎材料的优越性,在电气化铁路的工程施工中值得大力推广。
Baotian line K287 +094 Xiajiazui tunnel length of 184.5m, the northern end of the tunnel K287 + 010 ~ +050 extension of 40m within the left side wall cracked nephelium, the maximum horizontal cracks up to 38mm, nephew up to 440mm. I use the successful application of Building Materials Research Institute of silent crushing agent, in late February 1984 trial success, to mid-August 1984, crushing the original 184m ~ 3 concrete, the tunnel wall replacement is completed, get better Effect. Fully demonstrated the superiority of the new crushing material of silent crushing agent, which is worth to be promoted in the construction of electrified railway.