0, the pipe diameter fixes, the flow is scope, then according to the range of flow, one minimum, one maximum, see if the corresponding filling range can be obtained, if not, the flow range corresponding to the pipe diameter should be corrected (the range must Small), which affects everything behind, through 0 steps, in the case of giving flow and gived the pipe diameter, there is certainly a determined fill scale range. [This correction process can be performed, and the result can be called directly in the official program, not to call]
1. In the process of the fullness range in 0, the range of flow rate and slope will be used. It should be noted that due to the direct range, it is not necessarily satisfied, and it has carried out different degrees of corrections (large becoming smaller.上】, small becomes, this process should pay attention to the large becomes smaller but still more than the small limit [corresponding to the corresponding pipeline], the small becomes less than the large limit [corresponding pipeline corresponding ]). In GAOCHENG1, for general traffic, such a step 1 is still in the range of fullness.
2, in the way "350mm" problem, see if there is more efficient approach [Take a look at 349, 351]. FLOOR, the finishing function should also be implemented.
3, the dead cycle is that the renewal of fullness cannot meet the needs? Or is the pipe diameter that has reached the biggest? If it is a pipe diameter and fullness, it has reached the biggest, and it should be no problem! [It is definitely not the problem inside gaocheng1! . 0, 1 steps will be likely to solve this problem!
4. Also, pay attention to the use of the pump station when they are connected. When the duct end of the pipeline is smaller than the minimum allowable depth, there are two options that can be processed: falling and increasing the slope. Depending on the specific case (such as a height, if it is greater than n meters, it is necessary to decrease), this may be determined; the depth of the pipeline is more than 7 meters at the end of the pipeline, and it is necessary to set the pump station, 5 ~ 7 meters can be set. Not. It is also two options. In this way, four (two) programs, finally pass comparison, the cost of taking the cost (this involves the cost model of the dried well and pump station), this can be compared when calculating Totalcost . [Priority to deal with dowel, because this is necessary, there is also a precedent].
5. If the pumping station is enhanced, then this segment is equivalent to the starting segment; if it is degraded, the slope is set, then this segment is equivalent to calculating other data as the dead depth of the end of the end and the beginning. requires attention
6. Regarding the mathematical model of the drowning well, you can refer to some information, but since there is no expense of ordinary inspection wells in ordinary calculations, it is necessary to compare the cost gap, well, well, well, well The cost model can be obtained by regression simulation (minimum multiplier) by actual data (least squares) can be obtained [other methods, but does not affect the last result].
7. The cost model of the pumping station can consider a relatively simple start.
8. This paragraph flow can be calculated using an area. And the area will consider getting from AutoCAD.
9. In addition: About the review of foreign languages, on the one hand, Google search, on the other hand, find the clues from the predecessors!
10. There is enough reason to increase from upstream to downstream flow rate and pipe diameter! 11. The result obtained above enters Delphi's database by COM (what is efficient?), Then generate a standard report (according to the style of the textbook). Finally AutoCAD can get these data from the database, or from the writepad, and then programmatically generate the corresponding longitudinal cross-sectional diagram with Autolisp (planned to be given), and give a plan view plus appropriate calculation results (such as Pipe diameter, fullness, etc.).
The best case is the data in the plan view given by Autolisp, such as the length of the tube. (Now basically by delphi: pipe network coefficient matrix [pipe segment start node], area, friction coefficient, per capita standard, centralized flow, pipe length, initial buried, various nodes of ground elevation, cost formula )
As for the teacher, you can use the COM component from AutoCAD, you can check it out.
12. Is it necessary to use points to increase accuracy when calling a pipe cost model?
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