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【Daily Discussion】Public Utilities – Water Resources and Hydropower – 20210411

2021-04-11View Original

Thread Content

What is the role of curtain grouting and consolidation grouting in the foundation treatment of gravity dams? We welcome active participation in the discussions; there are generous rewards available for those who answer the questions posed by VIP members! ! !
Reply #22021-04-11
The choice of grouting method depends primarily on the construction workers’ experience and skill level. The pipe-jetting grouting method is simpler, while the sleeve-valve pipe method is more complex but results in higher construction quality. The sleeve valve tube method allows for grouting any specific grouting section as needed, and it also enables repeated grouting. Moreover, a higher grouting pressure can be used, resulting in a low probability of grout leakage and mixing. In gravel layer grouting, at present, there is a lack of a unified and relatively accurate formula for calculating the grouting pressure. In the early stage of grouting, pressure grouting can also be estimated based on work experience; subsequently, adjustments to the pressure are made depending on the suction conditions and observations of the ground surface, taking into account whether there is any grout leakage or uplift deformation.
Reply #32021-04-11
Reduce seepage rate and lower osmotic pressure. The choice of grouting method depends primarily on the construction workers’ experience and skill level. The pipe-jetting grouting method is simpler, while the sleeve-valve pipe method is more complex but results in higher construction quality. The sleeve valve tube method allows for grouting any specific grouting section as needed, and it also enables repeated grouting. Moreover, a higher grouting pressure can be used, resulting in a low probability of grout leakage and mixing. In gravel layer grouting, at present, there is a lack of a unified and relatively accurate formula for calculating the grouting pressure. In the early stage of grouting, pressure grouting can also be estimated based on work experience; subsequently, adjustments to the pressure are made depending on the suction conditions and observations of the ground surface, taking into account whether there is any grout leakage or uplift deformation.
Reply #42021-04-11
Reduce seepage rate and lower osmotic pressure. The choice of grouting method depends primarily on the construction workers’ experience and skill level. The pipe-jetting grouting method is simpler, while the sleeve-valve pipe method is more complex but results in higher construction quality. The sleeve valve tube method allows for grouting any specific grouting section as needed, and it also enables repeated grouting. Moreover, a higher grouting pressure can be used, resulting in a low probability of grout leakage and mixing. In gravel layer grouting, at present, there is a lack of a unified and relatively accurate formula for calculating the grouting pressure. In the early stage of grouting, pressure grouting can also be estimated based on work experience; subsequently, adjustments to the pressure are made depending on the suction conditions and observations of the ground surface, taking into account whether there is any grout leakage or uplift deformation.
Reply #52021-04-11
Reduce seepage rate and lower osmotic pressure. The choice of grouting method depends primarily on the construction workers’ experience and skill level. The pipe-jetting grouting method is simpler, while the sleeve-valve pipe method is more complex but results in higher construction quality. The sleeve valve tube method allows for grouting any specific grouting section as needed, and it also enables repeated grouting. Moreover, a higher grouting pressure can be used, resulting in a low probability of grout leakage and mixing. In gravel layer grouting, at present, there is a lack of a unified and relatively accurate formula for calculating the grouting pressure. In the early stage of grouting, pressure grouting can also be estimated based on work experience; subsequently, adjustments to the pressure are made depending on the suction conditions and observations of the ground surface, taking into account whether there is any grout leakage or uplift deformation.
Reply #62021-04-11
Reduce seepage rate and lower osmotic pressure. The choice of grouting method depends primarily on the construction workers’ experience and skill level. The pipe-jetting grouting method is simpler, while the sleeve-valve pipe method is more complex but results in higher construction quality. The sleeve valve tube method allows for grouting any specific grouting section as needed, and it also enables repeated grouting. Moreover, a higher grouting pressure can be used, resulting in a low probability of grout leakage and mixing. In gravel layer grouting, at present, there is a lack of a unified and relatively accurate formula for calculating the grouting pressure. In the early stage of grouting, pressure grouting can also be estimated based on work experience; subsequently, adjustments to the pressure are made depending on the suction conditions and observations of the ground surface, taking into account whether there is any grout leakage or uplift deformation.
Reply #72021-04-11
Reduce seepage rate and lower osmotic pressure. The choice of grouting method depends primarily on the construction workers’ experience and skill level. The pipe-jetting grouting method is simpler, while the sleeve-valve pipe method is more complex but results in higher construction quality. The sleeve valve tube method allows for grouting any specific grouting section as needed, and it also enables repeated grouting. Moreover, a higher grouting pressure can be used, resulting in a low probability of grout leakage and mixing. In gravel layer grouting, at present, there is a lack of a unified and relatively accurate formula for calculating the grouting pressure. In the early stage of grouting, pressure grouting can also be estimated based on work experience; subsequently, adjustments to the pressure are made depending on the suction conditions and observations of the ground surface, taking into account whether there is any grout leakage or uplift deformation.
Reply #82021-04-11
Reduce seepage rate and lower osmotic pressure. The choice of grouting method depends primarily on the construction workers’ experience and skill level. The pipe-jetting grouting method is simpler, while the sleeve-valve pipe method is more complex but results in higher construction quality. The sleeve valve tube method allows for grouting any specific grouting section as needed, and it also enables repeated grouting. Moreover, a higher grouting pressure can be used, resulting in a low probability of grout leakage and mixing. In gravel layer grouting, at present, there is a lack of a unified and relatively accurate formula for calculating the grouting pressure. In the early stage of grouting, pressure grouting can also be estimated based on work experience; subsequently, adjustments to the pressure are made depending on the suction conditions and observations of the ground surface, taking into account whether there is any grout leakage or uplift deformation.
Reply #92021-04-11
Reduce seepage rate and lower osmotic pressure.
Reply #102021-04-12
Reduce seepage rate and lower osmotic pressure.
Reply #112021-04-12
Reduce seepage rate and lower osmotic pressure. The choice of grouting method depends primarily on the construction workers’ experience and skill level. The pipe-jetting grouting method is simpler, while the sleeve-valve pipe method is more complex but results in higher construction quality. The sleeve valve tube method allows for grouting any specific grouting section as needed, and it also enables repeated grouting. Moreover, a higher grouting pressure can be used, resulting in a low probability of grout leakage and mixing. In gravel layer grouting, at present, there is a lack of a unified and relatively accurate formula for calculating the grouting pressure. In the early stage of grouting, pressure grouting can also be estimated based on work experience; subsequently, adjustments to the pressure are made depending on the suction conditions and observations of the ground surface, taking into account whether there is any grout leakage or uplift deformation.

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