CISRG Services

Services for Seismic Risk Assessments

We are providing services for Seismic Risk assessments related to Reservoirs. For contacts please fax to Thomas Vladut [403-250-6711] or e-mail to retom@cadvision.com . Advertisement with details included in the 1997 ICOLD Directory, {International Commission on Large Dams} page 136.

Questionnaire on risk of Reservoir Induced Seismicity (RIS).

Please provide the following elements of reservoir:

A. Size of the reservoir:

1. Minimum information on the Volume of the reservoir -the maximum storage capacity (V) with the indication of the maximum depth of the reservoir (h).
   • V= volume of the reservoir, in Km³ or millions of cubic meters;
   • h= maximum depth of the reservoir in meters;
   • S= surface area of the reservoir in Km²;
   • L= length of the reservoir in Kilometers.
   The elements above [ V, h, S and L] and geographical location (i.e.: Kenney Dam Canada: Lat. 53.37N & Long.124.58W) are minimum requirement for any assessment on RIS .
2. Preferred information on the size of reservoir by providing the following diagram of the relation between depth of the reservoir and associated volume and size of the reservoir.
3. Cross section of river along the reservoir. Some reservoir presents significant variations of the slope of the river, fact that make usually that the impoundment rate is very large at the beginning of the reservoir filling and with significant lower rate of impoundment as reaching the operational and maximum level of the reservoir.
4. Intended impoundment schedules. Usually associated to the pattern of reservoir impoundment for different hydrographic, low to high yearly flow.

B. Geological data of the reservoir:
[Important: please include the geographical coordinates, this provide to access the large global geological data base existing in Canada or USGS].

1. Geological setting and types of predominant rocks characterization for the nature of the underground storage, classification indicating brittle's or ductile nature of the underground reservoir.
   • Quantitative characterization of the rock mass properties, mostly resulted from the physical rock mechanics characterization of representative tests. Information on the permeability of the rock mass, preferred Young modules, Poison ratio and rock transmisitivity, etc.
   • Information on the faulting systems, in the reservoirs and surrounding area, with best available indications of the location-distance from the dam structure. Indications on the type of faulting associated with the models of deformations of the earth crust: Thrust, strike-slip, or normal deformation.
   • Information on the historical seismicity of the region of the reservoir and surroundings.

C. Supplementary elements:

1. Information on the dam structure and major stages of constructions that may affect the reservoir impounding procedures. Information on the construction and impoundment schedule.
2. Other background geological and seismological information of relevance on deep geological setting, etc.

ANY INFORMATION ON RISKS WHICH MAY ARISE FROM THIS DATA PROVIDES YOU PRIORITY INFORMATION AS THE ORIGINATOR.

Note:To simplify the undertaking sometime this may includes applications for financial support to mitigate these environmental concerns. Application on behalf of the client or in a joint format, will be addressed to environmental support organizations, and financial groups that support developments similar to your undertaking. Please suggest preferred support organizations.

The Questionnaire was developed in association of following requests from:

1. Sardar Sarovar Narmada Nigam Ltd. of India on Jabalpur, Madhya Pradesh event of Magnitude 6 (22May,1997) which affected surrounding population * [see the attached RIS resurgence file].
2. Mahab Ghodss Consulting Engineers of Teheran, Iran for Shafarud Dam Project (Environmental Study Unit of Research Department; Mr. Aram Farajollahi, 17 May 1997).
3. Lesotho Highland Development Authority, Mr.L. Fabian, Deputy Chief Executive- Engineering and Construction (28 September, 1996).
4. Advanced Technology & Engineering Services, New Delhi India, Dr. V.M. Sharma (13 October 1997) .

Dr.Thomas Vladut, P.Eng., Director CISRG
11753 Canfield Rd. Calgary, AB, T2W 1J6
Preferred mean to communicate: Please fax to 403-250-6711 or E-mail to: retom@cadvision.com