Method for recovering residual coal pillars by Freezing water accumulated in room-and-pillar mining area
US-12571308-B2 · Mar 10, 2026 · US
Ground freezing method
US10196792B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10196792-B2 |
| Application number | US-201615350177-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 14, 2016 |
| Priority date | Nov 17, 2015 |
| Publication date | Feb 5, 2019 |
| Grant date | Feb 5, 2019 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A method and a device for freezing the ground are provided with a freeze pipe closed on one front side, and an inner pipe extending into the freeze pipe for supplying a cooling agent, and wherein a hollow body is provided, whose inner diameter is larger than the outer diameter of the freeze pipe.
First claim
Opening claim text (preview).
What we claim is: 1. A ground freezing method comprising using a freeze pipe and an inner pipe extending into the freeze pipe, wherein a cooling agent selected from the group consisting of liquid nitrogen and aqueous saline solution is guided into the freeze pipe via the inner pipe, wherein a hollow body comprising a polymer material having a wall thickness less than 6 millimeters with an inner diameter larger than the outer diameter of the freeze pipe is introduced into the ground, and the freeze pipe is introduced into the hollow body, wherein a contact medium having a freeze point of at most 0° C. is introduced into a op between the hollow body and the freeze pipe and the freeze pipe and/or the contact medium are heated by an electric heater before removing the freeze pipe and the freeze pipe is removed from the hollow body after the ground has been frozen.
Assignees
Inventors
Classifications
for circulating liquids, e.g. brine · CPC title
- E02D3/115Primary
by freezing · CPC title
Devices using evaporation effects without recovery of the vapour (butter or cheese dishes with cooling devices A47G19/26) · CPC title
using liquefied gases, e.g. liquid air {(for cooling semiconductor devices H10W40/305)} · CPC title
by thermal, electrical or electro-chemical means (freezing soil for interrupting passage of underground water E02D19/14) · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10196792B2 cover?
- A method and a device for freezing the ground are provided with a freeze pipe closed on one front side, and an inner pipe extending into the freeze pipe for supplying a cooling agent, and wherein a hollow body is provided, whose inner diameter is larger than the outer diameter of the freeze pipe.
- Who is the assignee on this patent?
- Schmand Ralf, Sliwo Abraham, Linde Ag
- What technology area does this patent fall under?
- Primary CPC classification E02D3/115. Mapped technology areas include Fixed Constructions.
- When was this patent published?
- Publication date Tue Feb 05 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).