Tenders Are Invited For Performance Of A Detailed Geomechanical Analysis Of The Surroundings Of The Western Part Of The Witos Chambers

1. The Subject Of The Contract Is To Prepare A Geomechanical Analysis Of The Surroundings Of The Western Part Of The Witos Chambers Complex In Terms Of The Impact Of Their Liquidation On The Wisła - Warszawa - Budryk Complex. The Geomechanical Analysis Should Include At Least: 1) Inventory Of Excavations Using The 3D Laser Scanning Method Of The Witos Chamber Complex (Chambers: Iii/139, Iii/138, Iii/136, Iii/135, Iii/134, Iii/133 On Position Iii – Mpz Kazanów) Along With Their Technical Assessment. Spatial Coordinates Obtained By Laser Scanning Should Be Related To The Local Coordinate System Of The Mine, 2) Development Of A Numerical Geomechanical Model Enabling Geomechanical Analysis, Including: A) Development Of The Geometry Of The Geomechanical Model Taking Into Account Mining Excavations And Their Distribution (Geometry, Scanning), Geomechanical Analysis Of The Geological Structure And Geometrical Parameters Of Excavations As Well As Characteristic Existing Excavation Linings And Materials Used For Backfilling (Geology), C) Numerical Analysis Of The Size Of The Distribution Of Forces And Displacements Of The Rock Mass In The Area Of ​​The Chambers, Especially In The Vertical Configuration, Taking Into Account Geomechanical, Geological And Mining Conditions, Including Assessment Of The Stability Of The Excavations Before And After The Liquidation, Taking Into Account The Time Of Their Existence, Spatial Arrangement, Variability Of The Properties Of The Salt Massif And The Analysis Of The Need For Implementation In The Chambers, As Requested Ch Referred To In Point 1 Of Liquidation Works, Taking Into Account Their Current State Of Protection, 3) Forecast Of The Impact Of Backfilling On The Adjacent Excavations And The Area Within A Radius Of 200M, 4) Conclusions From The Analysis.3. As Part Of The Performance Of The Subject Of The Contract, The Contractor Should Analyze The Calculation Variants: Current And Target After The Liquidation.4. Geomechanical Analysis Should Be Performed In 3D Technology.5. The Contractor Shall Provide A Point Cloud Obtained By Laser Scanning In The *.Rcp Or *.Pts Format With A Density (Number Of Points) Not Less Than 20% Of The Original Density Of The Point Cloud. The Preferred Format Of Data Files For The Ordering Party Is *.Rcp.6. The Geomechanical Analysis Should Be Performed And Submitted To The Employer In The Form Of: 1) A Written Study - 5 Copies, 2) Electronic On Cd (Dvd) In Pdf Format With One Scan File Of The Written Form Or Many Scan Files Described And Arranged Identically As In The Written Form – 5 Copies, 3) Electronic On Cd (Dvd) Carriers In Editable Formats – 5 Copies. 4) Data From Laser Scanning In The Form Provided For In Point 6 On A Pen-Drive Or An External Ssd Drive - 1 Copy. Detailed Information On The Subject Of The Order And The Rules For Its Implementation Are Included In The Contract Template Constituting Annex No. 6 To The Specification, Which Is Available At: Https://Kopalniawieliczka.Ezajacyjacy.Pl