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鲁中冶金矿山公司是华东地区重要的铁矿石生产基地，而小官庄铁矿是该公司的骨干矿山。该矿矿床埋藏深、延深大、矿岩性质复杂。目前采用无底柱分段崩落采矿法，采深已超过５００ｍ，采场进路维护十分困难。本文根据小官庄铁矿软破岩体的形成机理，论述了各类软破岩石的物质组成和工程性质的形成规律，并在此基础上分析了各类软破岩在地下开采中对围岩变形的危害作用，因此，对深入研究该矿各类软破岩围岩变形机理和支护有着指导意义。
Luzhong Metallurgical Mine Company is an important iron ore production base in East China, while Xiaozhuangzhuang Iron Mine is the company’s key mine. The ore deposit buried deep, deep extension, the nature of ore rock complex. At present, the pillarless subsidence mining method is adopted, and the mining depth has exceeded 500m. It is very difficult to maintain the access road. According to the formation mechanism of soft broken rock mass of Xiaoguanzhuang Iron Mine, this paper discusses the formation rules of material composition and engineering properties of various soft rocks.And on this basis, Therefore, it is instructive to further study the deformation mechanism and support of surrounding rock of soft rock in soft rock.