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A platform for research: civil engineering, architecture and urbanism
Rainwater recharge process for protecting subway structure in complex karst cave area
The invention discloses a dewatering and recharging process for protecting a subway structure in a complex karst cave area. The dewatering and recharging process comprises the following steps that underground water level observation holes are formed, and dewatering wells and drainage ditches are arranged; arranging a recharge well, a water level monitoring well and a water collection and supply precipitation system, wherein the drainage ditch and the recharge well are communicated with the water collection and supply precipitation system; according to the dewatering and recharging process system, water in a dewatering well is pumped and drained to a drainage ditch, water in the drainage ditch is pumped and drained to a water collection and supply precipitation system, the water level is monitored, and when the water level of the periphery of the subway structure declines by 2 m, water is pumped into a recharging well from the water collection and supply precipitation system till the water level recovers to the decline by 2 m. Water level observation points are arranged on the peripheries of the foundation pit, the recharge well and the subway structure, so that the settlement dynamic state can be monitored in time. In the rainfall process, the descending and ascending amplitude of the water level is monitored, and recharge construction is adopted in time, so that the effects of effectively preventing or reducing the influence of rainfall on the surrounding environment and avoiding overlarge land subsidence and subway structure deformation are achieved.
本发明公开了一种用于复杂溶洞地区保护地铁结构的降水回灌工艺，包括如下步骤：布设地下水位观测孔，设置降水井和排水沟；设置回灌井、水位监测井以及集水供水沉淀系统，排水沟和回灌井连通集水供水沉淀系统；降水回灌工艺系统：降水井内水抽排至排水沟，排水沟内水抽排至集水供水沉淀系统，监测水位，地铁结构周边水位下降幅度超过2m，从集水供水沉淀系统抽水至回灌井内，直至水位恢复到2m的下降幅度内。通过对基坑、回灌井和地铁结构周边设置水位观测点，可及时的监测沉降动态。通过在降水过程中，监控水位下降和上升幅度，及时采取回灌施工，实现了有效防止或减少降水对周围环境的影响，避免产生过大的地面沉降和地铁结构变形的效果。
Rainwater recharge process for protecting subway structure in complex karst cave area
The invention discloses a dewatering and recharging process for protecting a subway structure in a complex karst cave area. The dewatering and recharging process comprises the following steps that underground water level observation holes are formed, and dewatering wells and drainage ditches are arranged; arranging a recharge well, a water level monitoring well and a water collection and supply precipitation system, wherein the drainage ditch and the recharge well are communicated with the water collection and supply precipitation system; according to the dewatering and recharging process system, water in a dewatering well is pumped and drained to a drainage ditch, water in the drainage ditch is pumped and drained to a water collection and supply precipitation system, the water level is monitored, and when the water level of the periphery of the subway structure declines by 2 m, water is pumped into a recharging well from the water collection and supply precipitation system till the water level recovers to the decline by 2 m. Water level observation points are arranged on the peripheries of the foundation pit, the recharge well and the subway structure, so that the settlement dynamic state can be monitored in time. In the rainfall process, the descending and ascending amplitude of the water level is monitored, and recharge construction is adopted in time, so that the effects of effectively preventing or reducing the influence of rainfall on the surrounding environment and avoiding overlarge land subsidence and subway structure deformation are achieved.
本发明公开了一种用于复杂溶洞地区保护地铁结构的降水回灌工艺，包括如下步骤：布设地下水位观测孔，设置降水井和排水沟；设置回灌井、水位监测井以及集水供水沉淀系统，排水沟和回灌井连通集水供水沉淀系统；降水回灌工艺系统：降水井内水抽排至排水沟，排水沟内水抽排至集水供水沉淀系统，监测水位，地铁结构周边水位下降幅度超过2m，从集水供水沉淀系统抽水至回灌井内，直至水位恢复到2m的下降幅度内。通过对基坑、回灌井和地铁结构周边设置水位观测点，可及时的监测沉降动态。通过在降水过程中，监控水位下降和上升幅度，及时采取回灌施工，实现了有效防止或减少降水对周围环境的影响，避免产生过大的地面沉降和地铁结构变形的效果。
Rainwater recharge process for protecting subway structure in complex karst cave area
一种用于复杂溶洞地区保护地铁结构的降水回灌工艺
LIU XIANNAN (author) / LUO YAN (author) / HUANG QIUTENG (author) / HUANG YUN (author) / CHEN GAOFENG (author) / MENG XIAOLIAN (author) / HE ZHAOWEN (author)
2022-04-15
Patent
Electronic Resource
Chinese
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