Construction method for reinforcing obstacle pile to be broken in underground tunnel construction

The invention discloses a construction method for reinforcing a to-be-broken obstacle pile in underground tunnel construction. The construction method comprises the following steps that firstly, construction preparation is conducted; secondly, micro pile construction is conducted through hole formin...

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Bibliographische Detailangaben
Hauptverfasser:	LI WEIJUN, LIU LEI, ZHOU RENRONG, TANG XUYANG, YANG YONG, LIANG CUNJUN, REN ZETIAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING EMBANKMENTS ENGINEERING ELEMENTS AND UNITS EXCAVATIONS FIXED CONSTRUCTIONS FOUNDATIONS GALLERIES GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HYDRAULIC ENGINEERING JOINTS OR FITTINGS FOR PIPES LARGE UNDERGROUND CHAMBERS LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PIPES SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS SHAFTS SOIL SHIFTING SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TUNNELS UNDERGROUND OR UNDERWATER STRUCTURES WEAPONS
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Beschreibung
Zusammenfassung:	The invention discloses a construction method for reinforcing a to-be-broken obstacle pile in underground tunnel construction. The construction method comprises the following steps that firstly, construction preparation is conducted; secondly, micro pile construction is conducted through hole forming, reinforcement cage inserting, grouting and top beam construction; thirdly, a construction platform is erected; fourthly, an initial well is excavated and supported; 5, guide rail pouring and backrest supporting are conducted; sixthly, various construction devices are installed; seventhly, the existing obstacle pile to be broken and removed is reinforced through crossed pre-stressed anchor cable locking construction; 8, the obstacle piles are broken in a static crushing mode; and ninthly, jacking construction and monitoring are conducted. According to the method, the obstacle piles can be broken and effectively reinforced in the tunnel excavation process. 本发明公开了一种地下隧道施工加固拟破除障碍桩施工工法，该工法通过以下步骤实现：步骤一、进行施工准备；步骤二、通过成孔