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#101 2019-04-08 17:50:23

tahanson43206
Member
Registered: 2018-04-27
Posts: 567

Re: Power Distribution by pipelines on Mars.

For SpaceNut ...

I am looking forward to seeing how this topic develops over coming Sols ... The idea of making a tunnel only 1 meter in diameter caught me by surprise.   Is there an example of such a tunnel having been bored horizontally on Earth?   Vertical bores that size would not be surprising (to me at least), but ....

Oh! Perhaps the (relatively new) technology of bending the path of a bore allows for horizontal runs of that size.

In "real world on Earth" practice, bending bores are quite common for routing of new gas lines in residential neighborhoods.  Perhaps extension of that technology to Mars situations would turn out to be practical and cost effective.

***
In past topics in NewMars forum, members have discussed manufacture of bricks from regolith.  I would imagine such bricks could be manufactured for use as tunnel liners.  In that role the bricks would be taking compression loads as the regolith above the tunnel descends/ compresses vertically.

(th)

SpaceNut wrote:

The issue for mars has more to do with the equipment needed to produce the desired diameter tube with regards to delivered mass and energy needs to make it work on mars.

A 1 meter diameter tube still can act as a crawl connection. with Of course a 2 meter tube is a walk in the park and large is where we can get serious about other uses..

The other part of the issue for materials is the mass that is supported on its surface to ground as there is limited ability to shore up from within as a mine shaft would do. Adding a grid re-enforcement on the outside like the iso grid pattern using extra materials like that which is use in the space capsule design would give the tube more load baring weight.

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#102 2019-04-08 18:03:23

SpaceNut
Administrator
From: New Hampshire
Registered: 2004-07-22
Posts: 15,037

Re: Power Distribution by pipelines on Mars.

I think the small tube of 1 or 2 meters could be done with partial covering via trenching method as proposed by Loius in other topics in that digging should be kept to a minimum for creating these types of connecting solutions in the early days of mars growth.

The tunnel bricks would need to be shaped and interlocking linner so as to keep them in place before the tube were inserted to create a sealed pathway for man, fluid, gas or for electrical to pass through.

Maybe google or others will chime in on the 1 meter diameter question for practicle or not size and use.

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#103 2019-06-03 11:10:13

knightdepaix
Member
Registered: 2014-07-07
Posts: 186

Re: Power Distribution by pipelines on Mars.

High Density Polyethylene can be used for making pipes for power distribution, sewage or drainage. Ethylene can be made from hydrogen reduction of carbon dioxide.

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#104 2019-06-03 20:23:42

SpaceNut
Administrator
From: New Hampshire
Registered: 2004-07-22
Posts: 15,037

Re: Power Distribution by pipelines on Mars.

Burried in the ground not issues with UV once installed, temperatures would be moderated but would be effected by how cold the content of the pipe is and the pressure needed to keep it in liquid form. Only room temperature and up are indicated in the articles for thus far.

https://en.wikipedia.org/wiki/High-density_polyethylene

https://www.creativemechanisms.com/blog … ng-and-cnc

Numbered types of plastics
https://sciencing.com/hdpe-plastic-5839257.html

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