Large scale grouting projects -- specifically those related to earth dams, dikes, and levees -- have significant and demanding challenges of resource scheduling, quality control, and budget management. These projects also require structured and efficient management of large data sets. Unless properly recognized, the data management requirements can contribute to project complexity and budget.
This paper discusses an innovative application of Geographic Information System (GIS) technology to capture information from grouting instrumentation and other data streams, synthesize these data in a common view, and provide feedback, quality control, and project assistance to the owner, engineer, and stakeholders. A case study of the application of this system at the Chickamauga Lock Replacement is discussed. The system, named "GroutTracker", consists of a data-driven graphical user interface that presents all project data in both plan and cross-sectional views, allowing one or more grout curtains to be visualized at a true scale. Borings are sized and/or color-coded by grout metrics (primarily grout take and water test results, i.e., Lugeon values), and can be shown in the context of geotechnical sample data, pre-grouting lithology, etc.
The system stores data collected (in real time) from grouting instrumentation, field observation data, as well as project documents and records in a comprehensive project database. By assigning locations (i.e., coordinates or project station numbers) to each datum and document, the database can be accessed by the GIS. Given that the GIS interface is connected directly to the instrumentation database, these metrics can be shown to appear, change in real-time, and be viewed by users remotely through the internet. By combining instrumentation data with other metrics measured in the field, including borehole logs, grout mix design and quantities, etc., the GIS can be used for quality control and to visualize and analyze the success of the project. The GroutTracker user interface contains several automated reports that present, for example, grout consumption per primary versus secondary holes as a function of mix design; or the mass of each grout mix component injected or wasted by grout curtain.
- Geosyntec Authors: Jamey Rosen, Raphael Siebenmann, Robert Bachus
- All Authors: Rosen, J., Siebenmann, R., Bachus, R., Roff, R., Carr, P., Rathbun, C.
- Title: Using GIS to Track, Analyze and Report Grouting Data
- Event or Publication: Proceedings of the 4th International Conference on Grouting
- Practice Areas: GIS and Database
- Date: 2012
- Location: New Orleans, Louisiana