ISPRS Workshop on Service and Application of Spatial Data Infrastructure, XXXVI(4/W6), Oct.14-16, Hangzhou, China 
various surface deformations and movements. Because of the 
independence of the influence function and integral variables, 
the functional relation existing for a complete subsidence basin 
can be referred to from the subsidence basin due to unit mining 
— so as to derive the influence functions of individual mining- 
induced movements and deformations. 
2. THE ESTABLISHMENT OF THE MINING 
SUBSIDENCE ANALYSIS SYSTEM 
2.1 The Idea of the System 
In order to establish the Mining Subsidence Analysis System 
(MSAS), many factors need to be considered, the prediction 
calculation model, the parameter model, date sharing, 
mathematic design, and computer language before the program 
will work. The designer is required to have a very general and 
clear design sense in the research and development process of 
the MSAS. The idea of the system contains as follow: 
1) The whole MSAS is based on the Maplnfo system, which 
was also used to develop the MSAS. The function of 
compatibility, date transfer and date exchange are found in the 
main control menu, these functions are used to establish a 
relationship between the Mapinfo system and the prediction 
calculation process. The advanced analysis function and 
graphics function are used to make MapBasic program, which 
help to achieve the visual analysis of mining inflection. 
2) The C and Fortran language with their advanced speed in 
making calculations will be used to program the prediction 
system, the parameterised function and the protraction of 
section curve and isoline. Making program in the system of 
Visual C++ and Visual Fortran, it will makes executable files in 
Windows and achieve high compatibility with Maplnfo. 
AutoCAD is used as the secondary mapping tool, or graphics 
exchange method. 
Figure 1. The constitute diagram of mining subsidence analysed 
system (MSAS) 
2.2 The Frame of the System 
The establishment of MSAS system, is to realise the function of 
prediction and calculation of ground displacement and 
deformation. Figure 1 shows the constitute diagram of the 
MSAS system. And Figure 2 is the control platform of the 
system. The control platform of MSAS system transfer other 
sub process and run the executable files compiled by Visual 
C++ and Visual Fortran system. Control platform is achieved by 
the program of MapBasic, partial source program shows on 
Table 1. 
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Figure. 2 Control platform of MSAS 
‘yjmenu.mb 
Include "mapbasic.def 1 
Include "icons.def' 
Include "menu.def' 
Declare Sub MAIN 
Declare Sub qxyj_sub 
Declare Sub jqxyj sub 
Declare Sub vector_sub 
Declare Sub dzxd sub 
Sub Main 
'Establish Menu for designing system 
Create Menu As 
Calling qxyj_sub, 
"itM® if "Calling jqxyj_sub,"(-", 
calling vector_sub,"(-", 
Calling dzxd_sub, 
ft ^5" Calling bxx_sub 
Alter Menu bar 
Alter Menu Add 
"IMi!4T:#" As "#di!4^#" 
Create Menu "GIS nJWt" As 
Calling cdfx_sub,"(-", 
"FTCalling visual_sub 
Alter Menu Add 
"GIS nJUf-fc" As "GIS 
End Sub 
Sub Ryxdsub 
'Run program "d:\gcgsany" 
'Run program "d:\qxyj " 
End Sub 
Table 1. Partial MapBasic source program 
2.3 The Content and Function of MSAS System 
The content of the MSAS system, contains not only mining 
subsidence model based on dip angle transformation and 
program format of vector prediction method, which are 
established in this paper, but also the contents of the traditional 
prediction and program format of parameter method. The main 
content and function shows below: 
— The program format of vector model, do the surface 
displacement prediction and parameter analysis. 
— Probability integral prediction and the determination of 
parameter.