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Home Books Earth Science Monograph on Field Permeability Tests in Alluvium and Rock

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The monograph on ``Field Permeability tests in alluvium and Rock is prepared with three objectives in view, viz. (i) provide theoretical background (ii) provide guidelines for selection of method, procedure for tests and computation of field permeability tests and (iii) provide procedure for selection of design value. After all elaborate field tests, some personal judgment has to be used to select a design value. Several case studies are given indicating procedure for actual selection of design value and its use in computation of seepage, drainage and dewatering etc. The monograph is therefore useful to designers and consultants, who are required to provide guidelines for field tests and select design value for a system. The monograph covers mainly tests in alluvium, where a reasonable representative value of permeability coefficient can be achieved. However, some aspect of tests in rock are included to work out a value, where, there is no other source of information. The monograph is divided in nine chapters. Chapter 1, 2 and 3 are introductory covering necessity of tests, influence of geological factors and field investigation. Chapter 4 is devoted to classification of tests in alluvium. A broad classification of field permeability tests in alluvium is worked out based on whether a test is regional or a point test in a bore or a pit. Further classification is based upon whether an aquifer is confined or unconfined, whether a test is below water table or above water table etc. Each test is identified by notation for easy reference. For each test case, theoretical and experimental basis for computation of permeability coefficient is given in Chapter 5. Chapter 6 covers test procedure and worked example of each test case. Chapter 7 and 8 cover field permeability classification in rock and test procedure and worked example of permeability determination in rock. Case studies of field permeability values and procedure for selecting a design value there from are given in Chapter 9.

1.APPLICATIONS OF FIELD PERMEABILITY TESTS
1.1. Dewatering
1.2. Seepage
1.3. Drainage
1.4. Groundwater pumping
1.5. Groundwater recharge
2. INFLUENCE OF GEOLOGICAL FACTORS
2.1 Flood plain and river bed deposits
2.2 Deltaic deposits
2.3 Residual soil deposits
2.4 Glacial deposits
2.5 Wind borne deposits
2.6 Geological age
3.INVESTIGATION FOR FIELD PERMEABILITY TESTS
3.1 Reconnaissance survey
3.2 Preliminary investigation
3.3 Detailed investigation
4. CLASSIFICATION OF FIELD PERMEABILITY TESTS
4.1 Classification
4.2 Regional test or point test
4.3 Test in a bore or a pit
4.4 Test above or below water table
4.5 Test with water flowing in or out
4.6 Test with steady or unsteady flow
4.7 Test in confined or unconfined aquifer
4.8 Test with full or part penetration
4.9 Form of discharge surface
5. THEORETICAL BACKGROUND FOR COMPUTATION OF FIELD PERMEABILITY IN ALLUVIUM
I. Regional tests for aquifers
5.1 Regional steady flow test in confined aquifer: Case R1, R2
5.2 Regional steady flow test in unconfined aquifer: Case R3, R4
5.3 Regional unsteady flow test in confined aquifer: Case R5, R6
5.4 Regional unsteady flow test in unconfined aquifer: Case R7, R8
II. Point tests in bores and pits
5.5 Point test in bore below water table for steady flow in confined aquifer: Case PB1 - PB3
5.6 Point test in bore below water table for steady flow in unconfined aquifer: Case PB4 - PB9
5.7 Point test in bore below water table for unsteady flow in confined and unconfined aquifer: Case PB10 - PB11
5.8 Point test in bore above water table for steady flow in unconfined aquifer: Case PB12 - PB15
5.9 Point test in pit above water table for steady flow in unconfined aquifer: Case PP1 – PP8
5.10 Summary of mathematical formulae
5.11 Limitations of test
6. TEST PROCEDURE AND COMPUTATION OF PERMEABILITY IN ALLUVIUM
I. Regional tests for aquifer
6.1. Case R1, R2, R3, R4
6.2. Case R5, R6, R7, R8
II Point tests in bores and pits
6.3. Case PB1, PB2, PB3
6.4. Case PB4, PB5, PB6
6.5. Case PB7, PB8, PB9
6.6. Case PB10
6.7 Case PB11
6.8 Case PB12, PB13
6.9 Case PB14, PB15
6.10 Case PP1, PP2, PP3
6.11 Case PP4
6.12 Case PP5, PP6, PP7
6.13 Case PP8
7. FIELD PERMEABILITY IN ROCK
7.1. Classification of field permeability test in rock
7.2. Limitations of field permeability test in rock
7.3. Selection of type of field permeability test in rock
8. TEST PROCEDURE AND COMPUTATIONS FOR FIELD PERMEABILITY IN ROCK
8.1 Lugeon test
8.2 Permeability test
9. SELECTION OF DESIGN PERMEABILITY : CASE STUDIES
9.1 Recharge tank in sandstone area of Sayala taluka
9.2 Drainage gallery in river Sabarmati for water supply to GMDC plant at Ambaji
9.3 Radial collector well in river Mahi for water supply to Gujarat Refinery plant near Vadodara
9.4 Radial collector well in river Mahi for water supply to IPCL plant near Vadodara
9.5 Under drainage system for RPL plant at Umalla
9.6 Underground drainage system for NRB Bearings plant at Jalna
9.7 Seepage through Rel earth dam foundation and reservoir periphery
9.8 Seepage through Umardashi earth dam foundation and reservoir periphery
9.9 Radial collector well in river Kanhan for water supply to MPIDC at Borgaon (MP)
9.10 Dewatering system in river Narmada for Bharuch municipality water works at Shuklatirth
APPENDIX 1 TO 14