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| DOI：10.13522/j.cnki.ggps.2021518 |
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| Application of High Pressure Jet Grouting Cut-off Wall in Drainage Gate Station under Complex Geological Conditions |
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CHEN Minfen, MA Jun, MA Liangwei
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1.Hangzhou Water Conservancy and Hydropower Engineering Quality and Safety Management Service Center,
Hangzhou 310005, China; 2. Zhejiang Water Resources and Hydropower Construction Supervision Company, Hangzhou 310003, China
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| Abstract: |
| In the construction process, it was found that the geological conditions were complex and changeable, and there are special situations such as large changes in the thickness of rock strata and particle grading in different parts. It is necessary to apply a variety of high-pressure jet grouting anti-seepage wall construction schemes to ensure the implementation effect. Combined with the construction example of high-pressure jet grouting cut-off wall for the foundation of waterlogging gate station of Fuchun River main embankment reinforcement project, under the complex geological conditions with large-size sand pebble layer, the methods of optimized comparison and selection of construction technology and technical parameters, strict process control in the construction process, third-party multi index quality inspection and comparative analysis of inspection indicators were applied. The results showed that the indexes of the high-pressure jet grouting cut-off wall with large particle size sand gravel layer meet the design requirements, but the wall quality of silty clay layer or muddy clay layer is better than that of sand pebble layer with large particle size. |
| Key words: high pressure jet grouting cut-off wall; complex geological conditions; drainage gate station |
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