沙漠砂贫混凝土在变电站塌陷治理中的应用

变电站内地下电缆沟槽纵横交错,而电缆沟本身空间狭小,这导致传统的回填方法无法夯实,且传统的回填土抗冲刷能力差,导致后期出现了不均匀沉降和因冲刷而诱发的塌陷。针对这种沉降和塌陷,以月牙湖330kV变电站塌陷治理为依托,提出一种有针对性的施工方法,也就是通过制备可以自密实的沙漠砂贫混凝土浆液,对这些狭小坑道进行灌注,解决了无法夯实的问题,且沙漠砂贫混凝土浆液固化后具有较强的抗冲刷能力,避免了后期使用中的冲刷塌陷,减小了维护频率。

Settlement of Substation Based on Self-dense Desert Sand-poor Concrete

The underground cable grooves in the substation are crisscrossed, and the space of the cable trench itself is narrow, which leads to the traditional backfill method can not be rammed, and the traditional backfill has poor scour resistance, resulting in uneven settlement and erosion induced collapse in the later stage. Based on the settlement and collapse of 330 kv substation in Yueya Lake, a targeted construction method is put forward, that is, by preparing self-compacting desert sand poor concrete slurry, these narrow tunnels are poured. It solves the problem that the desert sand poor concrete slurry has strong scour resistance to avoid scour collapse and reduces maintenance frequency.