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A platform for research: civil engineering, architecture and urbanism
Method for backfilling light foam concrete in urban abandoned underground space in soft soil area
The invention discloses a method for backfilling light foam concrete in an urban abandoned underground space in a soft soil area. The method comprises the following steps that (1) according to the surrounding environment and building conditions of the urban abandoned underground space to be backfilled, a water pumping-backfilling monitoring scheme is formulated, and horizontal displacement and settlement monitoring points are arranged; (2) accumulated water in a project is slowly pumped and drained, internal sundries are cleared, and an internal structure stress and strain monitoring device and a temperature and stress monitoring instrument for the light foam concrete in the backfilling process are arranged; (3) the density rho of the light foam concrete for backfilling is converted through an equivalent load method rho whw = rho h, and light foam concrete with the density grade is prepared; (4) according to a layering and blocking backfilling principle, the waste underground space are divided into layers and blocks, the light foam concrete is sequentially pumped from the interior of a project to an opening for backfilling in a layered and blocked mode, samples are reserved to test the physical and mechanical properties of light foam concrete samples in each backfilling stage until the space is densely backfilled; and (5) the backfilling effect is checked by adopting a coring and geophysical prospecting method.
本发明公开了一种软土地区城市废弃地下空间轻质泡沫混凝土回填方法，包括如下步骤：(1)根据拟回填城市废弃地下空间的周边环境和建筑情况，制定抽水‑回填监测方案，并布设水平位移和沉降监测点；(2)缓慢抽排工程内部的积水，清理内部杂物，布置内部结构应力、应变监测装置和回填过程轻质泡沫混凝土的温度、应力监测仪器；(3)采用等效荷载法ρwhw＝ρh换算需回填的轻质泡沫混凝土的密度ρ，配制该密度等级的轻质泡沫混凝土；(4)按照分层分块回填原则，划分废弃地下空间层位和区块，依次从工程内部向口部分层分区泵送回填，并留样测试各回填阶段轻质泡沫混凝土试样的物理力学性能，直至回填密实；(5)采用取芯和物探方法检验回填效果。
Method for backfilling light foam concrete in urban abandoned underground space in soft soil area
The invention discloses a method for backfilling light foam concrete in an urban abandoned underground space in a soft soil area. The method comprises the following steps that (1) according to the surrounding environment and building conditions of the urban abandoned underground space to be backfilled, a water pumping-backfilling monitoring scheme is formulated, and horizontal displacement and settlement monitoring points are arranged; (2) accumulated water in a project is slowly pumped and drained, internal sundries are cleared, and an internal structure stress and strain monitoring device and a temperature and stress monitoring instrument for the light foam concrete in the backfilling process are arranged; (3) the density rho of the light foam concrete for backfilling is converted through an equivalent load method rho whw = rho h, and light foam concrete with the density grade is prepared; (4) according to a layering and blocking backfilling principle, the waste underground space are divided into layers and blocks, the light foam concrete is sequentially pumped from the interior of a project to an opening for backfilling in a layered and blocked mode, samples are reserved to test the physical and mechanical properties of light foam concrete samples in each backfilling stage until the space is densely backfilled; and (5) the backfilling effect is checked by adopting a coring and geophysical prospecting method.
本发明公开了一种软土地区城市废弃地下空间轻质泡沫混凝土回填方法，包括如下步骤：(1)根据拟回填城市废弃地下空间的周边环境和建筑情况，制定抽水‑回填监测方案，并布设水平位移和沉降监测点；(2)缓慢抽排工程内部的积水，清理内部杂物，布置内部结构应力、应变监测装置和回填过程轻质泡沫混凝土的温度、应力监测仪器；(3)采用等效荷载法ρwhw＝ρh换算需回填的轻质泡沫混凝土的密度ρ，配制该密度等级的轻质泡沫混凝土；(4)按照分层分块回填原则，划分废弃地下空间层位和区块，依次从工程内部向口部分层分区泵送回填，并留样测试各回填阶段轻质泡沫混凝土试样的物理力学性能，直至回填密实；(5)采用取芯和物探方法检验回填效果。
Method for backfilling light foam concrete in urban abandoned underground space in soft soil area
软土地区城市废弃地下空间轻质泡沫混凝土回填方法
CHEN YONGGUI (author) / GUAN LEILEI (author) / ZHU SHENYI (author) / YE BIN (author)
2021-09-24
Patent
Electronic Resource
Chinese
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