3.1 The Contractor shall be obliged to:
1) take, under the supervision of a mining geologist, samples of rock material from “in situ” or loose rock material,
2) carry out tests in laboratory conditions verifying the geomechanical parameters of rocks previously taken from the field (from sites indicated by the Mine Service),
3) determine the geomechanical parameters of rocks (if there is a possibility for a particular rock type) found in the field according to the guidelines of the International Society for Rock Mechanics — ISRM. To determine the mechanical characteristics of a given batch (geological layer, salt type, location, depth, etc.), the following parameters should be determined: i.e.
(a) compressive strength “Rc”, MPa,
(b) tensile strength “Rr”, MPa,
(c) internal friction angle 'Ø', deg (term in triaxial tests),
(d) cohesions “c” (term in triaxial studies),
e) Young's module “E”, MPa,
(f) volumetric weight “Y” kN/m
In the course of the subject of the contract, the Contractor is obliged
1) take, under the supervision of a mining geologist, samples of rock material from “in situ” or loose rock material,
2) carry out tests in laboratory conditions verifying the geomechanical parameters of rocks previously taken from the field (from sites indicated by the Mine Service),
3) determine the geomechanical parameters of rocks (if there is a possibility for a particular rock type) found in the field according to the guidelines of the International Society for Rock Mechanics — ISRM. To determine the mechanical characteristics of a given batch (geological layer, salt type, location, depth, etc.), the following parameters should be determined: i.e.
(a) compressive strength “Rc”, MPa,
(b) tensile strength “Rr”, MPa,
(c) internal friction angle 'Ø', deg (term in triaxial tests),
(d) cohesions “c” (term in triaxial studies),
e) Young's module “E”, MPa,
(f) volumetric weight “Y” kN/m
g) Poisson coefficient “v”,
3.2 Contractor should be downloaded for tests according to ISRM guidelines for one type of rock minimum:
1) 11 samples with a diameter of 50 mm, a height of 100 mm,
2) 10 samples with a diameter of 50 mm, a height of 25 mm.
3.3 The scope of the test referred to in point 3.2. shall include the determination of the parameters for solid and on-board rocks present in the grander.
3.4 The solid deposit includes:
1) green salts typical ZBt,
2) green salts stained glass ZBw,
3) hard zubry,
4) zubry poor.
3.5 On-board deposits include:
1) spiz salts “gray”,
2) “eyelet” spiz salts,
3) spiz salts “gray” strongly fastened,
4) Spiz salts “white” '
5) “striped” spiz salts,
6) chic salts'
7) on-board green salts,
8) green salts deck of zubr fations,
9) oldest salts — solids,
10) oldest salts — decks,
11) android with anhydrite constituting spiz salt outgrowings,
12) anhydrite yelin constituting overgrowth of green salt on board,
13) Subsalt sandstone,
14) undersalt tracks: mules, iloths, gypsum.
The Contracting Authority shall, on an ongoing basis, indicate the Contractor to the location of sampling or drilling.
In the framework of the analysis performed, the Contractor should:
1) systematize and specify the conditions for the Wielicki grotwork allowing it to be left unenclosed in the case of paving,
2) specify the thickness of the salt layer for the rock type in question allowing the workings to be left without housing or not,
3) determine the thickness of the “safe” sput shelf depending on the type of rock.
A summary of the Analysis should be presenting a presentation with the presentation of the studies carried out, methodology, conclusions, recommendations in the light of the research carried out and its presentation at the meeting of the Commission on Natural Hazards of Salt Mines “Wieliczka” S.A.
In order to properly implement the subject of the contract, the Contracting Authority shall make available to the Contractor selected by the tender procedure any mining, measurement and geological documentation which contains information likely to affect the results of the analysis carried out, subject to preservation confidentiality rules arising from the model contract. The documentation will be available for inspection Monday through Friday, from 7 a.m. to 1 p.m. at the Measure-Geological Department. Mining maps will be made available to the Contractor in a 1:1 000 scale. The Contractor will evaluate and analyze the available documentation and, if necessary, perform photocopies or scans on equipment provided by the Ordering Party.
The analysis and other documents submitted for receipt shall be drawn up in the form of:
1) written elaboration — 5 copies,
2) electronic on a PDF CD media with one written scan file or multiple scan files described and ordered identically as in writing — 5 copies,
3) electronic media on CD/DVD in editable form — 5 copies,
Details are contained in the model contract set out in Annex 6 to the SWZ.