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Silica sol slow infiltration reinforcement method for argillaceous soft rocks
The present invention relates to a silica sol slow infiltration reinforcement method for argillaceous soft rocks, which belongs to a slow silica sol infiltration reinforcement method for arg$ilaceous soft rck$s. The method which is put forward is as follows: a, the 5 lithological changes of the surrounding rock of a roadway, pore development characteristics and hydrogeological conditions are evaluated, and parameters of grouting holes and a silica sol ratio are determined; b, before argillation, grouting holes are constructed; grouting pipes are set, the holes are sealed, and silica sol is injected; meanwhile, driven by grouting pressure, the silica sol is rapidly filled to reinforce macro-fractures; c, when the grouting 10 pressure decreases to a certain value, the low pressure is kept for a long time, in the meantime, driven by capillary force, the silica sol slowly diffuses into rock micro-fractures to form a highly dense reinforcing body, and therefore surrounding rock reinforcement is complete. The present invention not only fills macro-fractures, but also seals up water molecule and air molecule micro-channels in mudstone matrixes, thus remarkably 15 impeding microcosmic effects, such as adsorption, dissolution and weathering, greatly increasing the density and integrity of mudstone microstructures, further decreasing permeability, and increasing the deformation resistance and durability of rocks.
Silica sol slow infiltration reinforcement method for argillaceous soft rocks
The present invention relates to a silica sol slow infiltration reinforcement method for argillaceous soft rocks, which belongs to a slow silica sol infiltration reinforcement method for arg$ilaceous soft rck$s. The method which is put forward is as follows: a, the 5 lithological changes of the surrounding rock of a roadway, pore development characteristics and hydrogeological conditions are evaluated, and parameters of grouting holes and a silica sol ratio are determined; b, before argillation, grouting holes are constructed; grouting pipes are set, the holes are sealed, and silica sol is injected; meanwhile, driven by grouting pressure, the silica sol is rapidly filled to reinforce macro-fractures; c, when the grouting 10 pressure decreases to a certain value, the low pressure is kept for a long time, in the meantime, driven by capillary force, the silica sol slowly diffuses into rock micro-fractures to form a highly dense reinforcing body, and therefore surrounding rock reinforcement is complete. The present invention not only fills macro-fractures, but also seals up water molecule and air molecule micro-channels in mudstone matrixes, thus remarkably 15 impeding microcosmic effects, such as adsorption, dissolution and weathering, greatly increasing the density and integrity of mudstone microstructures, further decreasing permeability, and increasing the deformation resistance and durability of rocks.
Silica sol slow infiltration reinforcement method for argillaceous soft rocks
Patent
Electronic Resource
Geomechanical spectrum of argillaceous rocks
| British Library Conference Proceedings | 1998
Moisture Effects on Argillaceous Rocks
| Springer Verlag | 2007
Shear strength of some argillaceous rocks
| Engineering Index Backfile | 1968
Aspects of modelling geotechnical problems in hard soil and soft argillaceous rocks
| British Library Conference Proceedings | 2004
Hydro-mechanical Behaviour of Unsaturated Argillaceous Rocks
| Springer Verlag | 2017