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A platform for research: civil engineering, architecture and urbanism
Dewatering construction method suitable for high-pressure-bearing water-rich karst stratum deep foundation pit
The invention provides a dewatering construction method suitable for a high-pressure-bearing water-rich karst stratum deep foundation pit. The dewatering construction method comprises the following steps that 1) dewatering well construction is conducted; 2) blind ditch position planning is conducted; 3) blind ditch excavation is conducted, specifically, according to the planned blind ditch position, a blind ditch is excavated in the bottom face of the foundation pit, the depth of a groove of the blind ditch is controlled to be 15-25cm, the width of the groove of the blind ditch is controlled to be 25-35cm, and the gradient of the groove of the blind ditch is controlled to be 0.1, so that gushing water flows to a dewatering well from karst fracture gushing water points in the deep foundation pit; 4) filter pipe mounting is conducted; 5) gushing water point drainage is conducted; 6) inverted filter layer backfilling is conducted; and 7) drainage is conducted. According to the dewatering construction method suitable for the high-pressure-bearing water-rich karst stratum deep foundation pit, a base is in a water-free environment, and a good working environment can be provided for subsequent cushion layer, waterproof and main structure construction.
本发明提供了一种适用于高承压富水岩溶地层深基坑的降水施工方法，其包括如下步骤：1)降水井施工；2)暗沟位置规划；3)暗沟开挖：按照规划的暗沟位置，于基坑底面开挖暗沟，控制暗沟沟槽的深度为15～25cm、宽度为25～35cm、坡度为1‰，使涌水从深基坑中岩溶裂隙涌水点往降水井流动；4)滤管安装；5)涌水点引流；6)反滤层回填；7)排水。本发明一种适用于高承压富水岩溶地层深基坑的降水施工方法能保证基底处于无水环境，可为后续的垫层、防水、主体结构施工提供良好的工作环境。
Dewatering construction method suitable for high-pressure-bearing water-rich karst stratum deep foundation pit
The invention provides a dewatering construction method suitable for a high-pressure-bearing water-rich karst stratum deep foundation pit. The dewatering construction method comprises the following steps that 1) dewatering well construction is conducted; 2) blind ditch position planning is conducted; 3) blind ditch excavation is conducted, specifically, according to the planned blind ditch position, a blind ditch is excavated in the bottom face of the foundation pit, the depth of a groove of the blind ditch is controlled to be 15-25cm, the width of the groove of the blind ditch is controlled to be 25-35cm, and the gradient of the groove of the blind ditch is controlled to be 0.1, so that gushing water flows to a dewatering well from karst fracture gushing water points in the deep foundation pit; 4) filter pipe mounting is conducted; 5) gushing water point drainage is conducted; 6) inverted filter layer backfilling is conducted; and 7) drainage is conducted. According to the dewatering construction method suitable for the high-pressure-bearing water-rich karst stratum deep foundation pit, a base is in a water-free environment, and a good working environment can be provided for subsequent cushion layer, waterproof and main structure construction.
本发明提供了一种适用于高承压富水岩溶地层深基坑的降水施工方法，其包括如下步骤：1)降水井施工；2)暗沟位置规划；3)暗沟开挖：按照规划的暗沟位置，于基坑底面开挖暗沟，控制暗沟沟槽的深度为15～25cm、宽度为25～35cm、坡度为1‰，使涌水从深基坑中岩溶裂隙涌水点往降水井流动；4)滤管安装；5)涌水点引流；6)反滤层回填；7)排水。本发明一种适用于高承压富水岩溶地层深基坑的降水施工方法能保证基底处于无水环境，可为后续的垫层、防水、主体结构施工提供良好的工作环境。
Dewatering construction method suitable for high-pressure-bearing water-rich karst stratum deep foundation pit
一种适用于高承压富水岩溶地层深基坑的降水施工方法
ZHOU ZHIQIANG (author) / ZHANG XU (author) / HE PENG (author) / HUANG REN (author) / CHEN LONG (author) / LIU LILEI (author) / LIN SIQUAN (author) / ZHU XUNCHAO (author)
2021-04-06
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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