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Small-section construction adit plugging structure and construction method thereof
The invention discloses a small-section construction adit plugging structure and a construction method thereof. The plugging structure comprises a diversion tunnel and a construction adit connected with the diversion tunnel, plugging concrete is arranged in the construction adit, a plurality of consolidation grout holes are distributed in the periphery of the plugging concrete, embedded hole inner steel pipes are arranged in the consolidation grout holes, fixedly welded by manhole steel pipe fixing reinforcements and communicated with longitudinal extraction steel pipes, longitudinal steel pipe fixing reinforcements are fixedly welded on the longitudinal extraction steel pipes, and gaps among the embedded hole inner steel pipes and the consolidation grout holes are plugged by the aid of anchoring agents. The consolidation grout holes can be drilled on vertical bedrock in the construction adit, so that the depths of the consolidation grout holes are shortened, the plugging structure overcomes the shortcomings of poor grouting quality and long construction period due to a fact that a long radial hole is drilled in the end face of the plugging concrete, so that construction quality is improved, cost is saved, and construction period is shortened.
Small-section construction adit plugging structure and construction method thereof
The invention discloses a small-section construction adit plugging structure and a construction method thereof. The plugging structure comprises a diversion tunnel and a construction adit connected with the diversion tunnel, plugging concrete is arranged in the construction adit, a plurality of consolidation grout holes are distributed in the periphery of the plugging concrete, embedded hole inner steel pipes are arranged in the consolidation grout holes, fixedly welded by manhole steel pipe fixing reinforcements and communicated with longitudinal extraction steel pipes, longitudinal steel pipe fixing reinforcements are fixedly welded on the longitudinal extraction steel pipes, and gaps among the embedded hole inner steel pipes and the consolidation grout holes are plugged by the aid of anchoring agents. The consolidation grout holes can be drilled on vertical bedrock in the construction adit, so that the depths of the consolidation grout holes are shortened, the plugging structure overcomes the shortcomings of poor grouting quality and long construction period due to a fact that a long radial hole is drilled in the end face of the plugging concrete, so that construction quality is improved, cost is saved, and construction period is shortened.
Small-section construction adit plugging structure and construction method thereof
ZHANG CHENG (author) / WANG HONGJUN (author) / ZHAI ZHANGHONG (author) / ZHANG QING (author) / WANG XIAOFENG (author)
2015-09-23
Patent
Electronic Resource
English
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
| European Patent Office | 2023
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