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东荣二矿是该矿区首建新矿 ,又是东北寒冷地区最深冻结井 (冻深 3 70m)。地基采用人工冻融特殊土。基础型式选定钻孔灌注端桩 (桩长 4 1m) ,全部落在经过人工冻融砂层上。基础型式创我国煤炭行业首例 (见后表 1)。该矿 1995年 5月投产至今 ,井塔基础稳定、安全 ,设计技术合理 ,经济效益显著。对今后矿区建设同类工程具有指导意义。
Dongrong No. 2 Mine is the first new mine in the mine and the deepest frozen well in the northeastern cold region (frost depth 3 70m). Foundation using artificial freezing and thawing special soil. The basic type selected borehole perfusion pile (pile length 4 1m), all fall through the artificial freeze-thaw sand layer. The first model of China’s coal industry record (see Table 1). The mine put into operation in May 1995 so far, well tower foundation is stable, safe, reasonable design and technology, significant economic benefits. The construction of similar projects in the future mining area has guiding significance.