Investigating Fracture Network Deformation Using Noble Gas Release

Figure 3

Map view (left) and cross-section (right) of the GZ borehole and 8 monitoring boreholes with locations of gas samplers. Yellow zones are zones of sand and epoxy which hold the gas sniffers. Gray zones are grout. Not to scale, grout layers are 5-7 times the height of the sand/epoxy layers.