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A platform for research: civil engineering, architecture and urbanism
Filling device and method for waste air-raid shelter of pile foundation construction site
The invention provides a filling device and method for a waste air-raid shelter of a pile foundation construction site. The filling method comprises the steps that a grouting drill hole is drilled above a waste air-raid shelter to be filled, a primary grouting pipe, a secondary grouting pipe, an air supply pipe and an air exhaust pipe are installed in the drill hole, the primary grouting pipe andthe air supply pipe vertically extend into the bottom of the air-raid shelter, the secondary grouting pipe and the air exhaust pipe vertically extend to the top of the air-raid shelter, firstly, the primary grouting pipe is connected with a grouting pump, the air supply pipe is connected with an air compressor, foam concrete grouting slurry is injected in a layered mode, the primary grouting pipeand the air supply pipe are pulled up all the way to the top of the air-raid shelter after grouting of each layer is completed, then the secondary grouting pipe is connected to inject the foam concrete grouting slurry for the second time, and air is not supplied during secondary grouting. The filling problem of the deep-buried air-raid shelter can be solved under the condition that excavation is not conducted, normal construction of a cast-in-situ bored pile can be guaranteed on a filled construction site, and the problems that when a rotary drilling rig constructs a cast-in-situ pile foundation, normal construction cannot be conducted on the deep-buried air-raid shelter, the site collapses and the like are solved.
本发明提供一种桩基施工场地废弃防空洞的充填装置及方法。所述充填方法是在待充填废弃防空洞的上方钻设注浆钻孔，并在钻孔中安装一次注浆管、二次注浆管、送风管和排气管，一次注浆管和送风管垂直伸入防空洞的洞底，二次注浆管和排气管垂直延伸至防空洞的洞顶；先将一次注浆管连接注浆泵，送风管连接空压机，分层注入泡沫混凝土注浆浆液，每层注浆完毕上拔一次注浆管和送风管，直至洞顶；然后连接二次注浆管二次注入泡沫混凝土注浆浆液，二次注浆不送风。本发明能够在不开挖的情况下解决深埋防空洞的填充问题，填充后的施工场地能够确保正常施工钻孔灌注桩，解决了旋挖钻机施工灌注桩基时遇到深埋防空洞无法正常施工和场地塌陷等问题。
Filling device and method for waste air-raid shelter of pile foundation construction site
The invention provides a filling device and method for a waste air-raid shelter of a pile foundation construction site. The filling method comprises the steps that a grouting drill hole is drilled above a waste air-raid shelter to be filled, a primary grouting pipe, a secondary grouting pipe, an air supply pipe and an air exhaust pipe are installed in the drill hole, the primary grouting pipe andthe air supply pipe vertically extend into the bottom of the air-raid shelter, the secondary grouting pipe and the air exhaust pipe vertically extend to the top of the air-raid shelter, firstly, the primary grouting pipe is connected with a grouting pump, the air supply pipe is connected with an air compressor, foam concrete grouting slurry is injected in a layered mode, the primary grouting pipeand the air supply pipe are pulled up all the way to the top of the air-raid shelter after grouting of each layer is completed, then the secondary grouting pipe is connected to inject the foam concrete grouting slurry for the second time, and air is not supplied during secondary grouting. The filling problem of the deep-buried air-raid shelter can be solved under the condition that excavation is not conducted, normal construction of a cast-in-situ bored pile can be guaranteed on a filled construction site, and the problems that when a rotary drilling rig constructs a cast-in-situ pile foundation, normal construction cannot be conducted on the deep-buried air-raid shelter, the site collapses and the like are solved.
本发明提供一种桩基施工场地废弃防空洞的充填装置及方法。所述充填方法是在待充填废弃防空洞的上方钻设注浆钻孔，并在钻孔中安装一次注浆管、二次注浆管、送风管和排气管，一次注浆管和送风管垂直伸入防空洞的洞底，二次注浆管和排气管垂直延伸至防空洞的洞顶；先将一次注浆管连接注浆泵，送风管连接空压机，分层注入泡沫混凝土注浆浆液，每层注浆完毕上拔一次注浆管和送风管，直至洞顶；然后连接二次注浆管二次注入泡沫混凝土注浆浆液，二次注浆不送风。本发明能够在不开挖的情况下解决深埋防空洞的填充问题，填充后的施工场地能够确保正常施工钻孔灌注桩，解决了旋挖钻机施工灌注桩基时遇到深埋防空洞无法正常施工和场地塌陷等问题。
Filling device and method for waste air-raid shelter of pile foundation construction site
桩基施工场地废弃防空洞的充填装置及方法
WANG HUI (author) / YAO DONGKE (author) / LI YAWEI (author) / WANG XIAODONG (author) / CHEN XIAOBO (author)
2021-02-05
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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