Drainage positioning grouting segment and construction method thereof

• Main Authors: LI JIONGTAO, WEI GANG, YE JIAHUAN, CUI YUNLIANG, SUN YIFU, ZHANG LISHA, SUN MIAOMIAO
• Format: Patent
• Language: Chinese; English
• Published: 04.12.2020
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS; SHAFTS; TUNNELS

The invention discloses a drainage positioning grouting segment and a construction method thereof. The drainage positioning grouting segment comprises a prefabricated segment body and a grouting drainage system, wherein the prefabricated segment body comprises a segment solid body, a prefabricated drill hole and a preset water pressure pore sensor mounting hole; the grouting drainage system comprises a pre-installed valve, a pre-embedded air bag, a grouting drainage guide pipe and a water pressure pore sensor; and when the water pressure collected by the water pressure pore sensor exceeds a segment stress early warning value, the engineering problems such as segment deformation and crack water seepage can be prevented by opening the valve for drainage or by opening the valve for drainage first and then conducting grouting reinforcement. According to the drainage positioning grouting segment and the construction method thereof, the prefabricated drill hole and the pre-embedded groutingdrainage system are adopt