Process Help PITMOD - create a pit model and evaluation

 

Process Name	Menu Path	Link to Command Table
PITMOD	Reserves ribbon | Report | Pit Reserves	Click here

• Introduction

• Files, Fields and Parameters

• Notes

• Example

• Errors

Introduction

This is a Superprocess and running it may have an effect on other Datamine files in the project. More...

 

Creates an in-pit model and allows a quick evaluation of an overall pit design.

How to use

An input DTM wireframe must be supplied, which represents the bottom surface of the ultimate pit design. An input geological block model must also be supplied. 

The results are automatically broken down by bench, taken from the block model cell height. An overall total evaluation is also determined and optionally the results can be reported by KEY field. The BENCH number reported refers to the 'base' of each bench.

Subcell splitting is controlled by the parameters @XSUBCELL, @YSUBCELL and @RESOL. At least one numeric grade field must be defined. No absent grade data is allowed. Blocks with absent grade data do not get processed.

• The wireframe of the pit should be within the area of the block model prototype for the process to work correctly.

• @ZORIG and @BHEIGHT parameters to be used to optionally define an alternative origin and bench height.

• The process does not support rotated block models.

• The advantage of using PITMOD over SELWF to select the blocks within a pit wireframe, is that the output model will have cell splitting where it meets the pit wireframe.

• Absent grades are not allowed. If a grade is absent the default value is used. If the default value is absent zero is used.

• The output results file contains the fields TOP_B, BOTTOM_B, MID_B which contain the elevations of the top, bottom and middle of each evaluated bench respectively.

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Files, Fields and Parameters

Input Files

Name	Description	I/O Status	Required	Type
WIRETR	Triangle file of update wireframe surface (DTM).	Input	Yes	Wireframe triangle
WIREPT	Point file of pit wireframe triangulated surface.	Input	Yes
MODELIN	Block model for evaluation above wireframe.	Input	Yes	Block model

Output Files

Name	I/O Status	Required	Type	Description
MODELOU	Output	No	Block model	Block model portion inside pit.
RESULTS	Output	Yes	Undefined	Evaluation results data, by bench.

Fields

Name	Description	Source	Required	Type	Default
F1	Numeric grade field 1.	MODELIN	Yes	Any	Undefined
F2	Numeric grade field 2.	MODELIN	No	Any	Undefined
F3	Numeric grade field 3.	MODELIN	No	Any	Undefined
F4	Numeric grade field 4.	MODELIN	No	Any	Undefined
F5	Numeric grade field 5.	MODELIN	No	Any	Undefined
KEY	Key field - numeric.	MODELIN	No	Any	Undefined
DENSITY	Density field.	MODELIN	No	Any	DENSITY

Parameters

Name	Description	Required	Default	Range	Values
DENSITY	Default DENSITY value.	Yes	1	0,9999
XSUBCELL	Cell division in X direction (1). Max 20.	No	1	1,20
YSUBCELL	Cell division in Y direction (1). Max 20.	No	1	1,20
RESOL	Defines boundary resolution in direction perpendicular to plane of filling. =(0) - precise boundary location. = N - boundary rounded to nearest 1/Nth of parent cell size.	No	0	Undefined	Undefined
ZORIG	Specify an alternative bench origin.	No	0	Undefined	Undefined
BHEIGHT	Specify an alternative bench height.	No	0	Undefined	Undefined

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Notes

No additional notes.

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Example

!PITMOD

&WIRETR(pittr), &WIREPT(pitpt), &MODELIN(model), &MODELOU(pitmod), &RESULTS(pitres), *F1(AU), @DENSITY=2.6, @XSUBCELL=3.0, @YSUBCELL=3.0, @RESOL=0.0

 

Input:		Pit wireframe Resource model
Output:		Block model within pit
		Bench-by-bench evaluation results output as .dm and as .csv files

 

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Error and Warning Messages

Message	Description	Solution
>>> ERROR: Read error from file ffffffff	Read error from file specified as &IN. Fatal; the process is exited.
>>> ERROR: field aaaaaaaa is too long	Fatal; the process is exited.
>>> WARNING: Cannot append to file ffffffff. A new file will be created	Cannot append fieldnames to the file specified as &OUT. Check the file name given. A new &OUT file will be created.
>>> ERROR: Files have different DDs, cannot append	File specified in pattern matching expression and the file specified as &OUT have different DDs. Fatal; the process is exited.
>>> ERROR: Unexpected execution error	Fatal; the process is exited.
>>> ERROR: Illegal instruction found	Fatal; the process is exited.
>>> SYNTAX ERROR AT " "	Syntax of pattern matching expression is incorrect. Fatal; the process is exited.
>>> ERROR: Incompatible types for " " and " "	Field types are incompatible in relational expression. Fatal; the process is exited.
>>> ERROR: " " MATCHES ...	Alphanumeric field required Alphanumeric field required for pattern matching expression. Fatal; the process is exited.
>>> ERROR: Illegal pattern:	Illegal pattern in pattern matching expression. Fatal; the process is exited.
>>> ERROR: More than nnnnn instructions	Maximum number of expressions is 100. Fatal; the process is exited.

 

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