Inducing Fracture With Granitic Bedrock

Higher bedrock fracture density could promote vegetation by providing footholds for roots and reservoirs for water storage 20 33.

Inducing fracture with granitic bedrock.

Quantitative mapping and statistical evaluation of fracture minerals in the granitic bedrock at forsmark sweden martin löfgren1 magnus sidborn2 received. The migration of the uranium u in high level radioactive waste that is held in deep geological repositories via fractures in deep granite aquifers i. Concerning fracture mineral layers their presence in open partly open and sealed fractures have been characterised as well as in the occasional crush zone. A geostatistical method geofrac that can incorporate orientations of sampled data was applied to 50 900 borehole fractures for spatial modeling of fractures over a 12 km by 8 km area to a depth of 1 5 km.

The granitic bedrock is sufficiently weathered to meet paralithic materials criteria but is not so intensively weathered to be considered saprolite. A pilot study involving creation of two fractured bedrock zones northern and southern fbzs was conducted at site 37 edwards afb ca. Geofrac produced a plausible 3d fracture model in that the orientations of simulated fractures correspond to those of the sample data and. True quartz is quite resistant to weathering and is an important component of sands in riverbeds and on beaches.

The objective for creating the fbzs was to evaluate whether blast fracturing could create a zone of highly interconnected fractures that would exhibit greater ground water. 9 march 2016 the author s 2016. Most of the bedrock was formed between 1900 and 1850 million years ago and has been subjected to both ductile and brittle deformation hermansson et al. Citeseerx document details isaac councill lee giles pradeep teregowda.

29 february 2016 published online. Thus differences in fracture density could help explain the lithologic control of vegetation shown in fig. The matrix matrix rind fracture rind fracture coating and fracture fill. A lateral sequence of five morphologic zones exists within each weathered bedrock horizon.

While this hypothesis had been postulated based on theoretical. Density of bedrock fractures. Sheeting fractures and exfoliation domes commonly develop in areas with soft highly fractured bedrock. However for this to be the case fracture density would need to.