curtain grouting การใช้

• Study of material for curtain grouting in karst tunnel
• Inclined genesis of deep curtain grout hole and disposal methods
• Curtain grouting test for replacing seepage prevention wall of stage i soil - rock cofferdam of tgp
• Drilling technique of vertical curtain grouting in the deep foundation pit in wuhan changjiang square
• Power intake dam section foundation impervious curtain grouting in the dachaoshan hydropower plant
• Construction and quality control of curtain grouting in foundation of dam for dalong water control project
• Design and construction of dam foundation impervious curtain grouting for dachaoshan hydropower station
• Construction technique of curtain grouting and deep - hole grouting from ground surface used for tianxinshan tunnel
• This article aims to study and analyze the curtain grouting on rock foundation and puts forward an improved proposal
• Through grouting practice of design and construction , it is proved feasible and cheaper to use dam heavy curtain grouting technology for leakproof and bracing for foundation pit in the sandy gravel stratum
• The cutoff wall near the dam axis , the consolidation grouting and the curtain grouting for the foundation , and the high pressure jet - grouted cutoff wall at the toe of the dam form a vertical anti - seepage system for the dam foundation
• The packing gland for the conventional high - pressure grouting is modified to be adaptable to the low - pressure curtain grouting ; by which the application area of the grouting method is enlarged along with improved grouting quality and shortened construction period
• It is suggested that the impervious wall combined with curtain grouting should be taken as the main vertical impervious body for seepage control , and that the full use of slope wash and fully weathered zone as horizontal impervious blanket should be taken to reduce work load for seepage control
• A brief introduction is given to the treatment of the zeya dam foundation , principles of seepage control and design of the concrete face rockfill dam of the zeya reservoir . as for the excavation of the sand - gravel zones , except the toe slab and its 1 / 9 bottom width down stream , the alluvial layers are excavated to the micro - weathered rocks , while the other sections remain unexcavated . regarding to the treatment of the fracture zones , concrete filling is used for the toe slabs and semi - permeable materials are used for other section . according to the construction characteristics , a filter is placed in the down stream embankment foot . to improve the integrity of the dam foundation and anti - seepage capability consolidation grouting and curtain grouting are adopted . as a result safety , economic benefit , convenience in construction and good performace are achieved
• This paper introduces the applicability and grouting effect of the single cement slurry , double grout ( cement slurry water glass slurry ) and the fine cement slurry under different condition with an example of gele mountain , and puts forward that for the curtain grouting of karst tunnel the priority is given to improved single cement slurry
• A brief introduction is given to the treatment of the zeya dam foundation , principles of seepage control and design of the concrete face rockfill dam of the zeya reservoir . as for the excavation of the sand - gravel zones , except the toe slab and its 1 / 9 bottom width down stream , the alluvial layers are excavated to the micro - weathered rocks , while the other sections remain unexcavated . regarding to the treatment of the fracture zones , concrete filling is used for the toe slabs and semi - permeable materials are used for other section . according to the construction characteristics , a filter is placed in the down stream embankment foot . to improve the integrity of the dam foundation and anti - seepage capability consolidation grouting and curtain grouting are adopted . as a result safety , economic benefit , convenience in construction and good performace are achieved
• By integrating with the engineering practice of curtain grouting on the right abutment of houhe reservoir and on the basis of field tests , researches were conducted on the establishment of grouting parameters and gins , mix proportion of stable mortar as well as finishing standard of different gins under certain geological condition . and after checking the grouting effects , comparison was made between gin grouting and the traditional grouting technique
• The distance of the single - row curtain grout hole is between 1 . 4 to 1 . 8 meter , and 2 . 0 meter is suitable for the double - row curtain ; the grouting pressure generally is 1 . 0 to 1 . 5 mpa at the first three grout compartment , then grouting pressure of under the fourth control in 4 to 5 mpa ; for mast grout compartments , a water - cement ratio of 2 or 1 may used in the first grouting
• However , the geologic structure of the carstic formation is complicated and the design , construction , quality testing method of the high - pressure grouting is developing rapidly . we have engaged lots of experiments and studies in xiangshuiriver reservoir on this subject . one of the purposes subject is to guide the design , construction of the curtain grouting in the xiangshuiriver reservoir and optimize the grouting design , the other is to be a reference example for other similar engineering