SU642479A1 - Device for electrothermal weakening of rock mechanical strength at drilling holes - Google Patents
Device for electrothermal weakening of rock mechanical strength at drilling holesInfo
- Publication number
- SU642479A1 SU642479A1 SU772513996A SU2513996A SU642479A1 SU 642479 A1 SU642479 A1 SU 642479A1 SU 772513996 A SU772513996 A SU 772513996A SU 2513996 A SU2513996 A SU 2513996A SU 642479 A1 SU642479 A1 SU 642479A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- weakening
- electrothermal
- electrodes
- mechanical strength
- rock
- Prior art date
Links
Description
Устройство имеет буровую коронку 1, закрепленную на конце штанги 2. Непосредственно за коронкой 1 на штанге 2 креп тс две втулки 3 из диэлектрического материала , расположенные одна от другой на некотором рассто нии и несущи электроды 4 в виде металлических щеток, которые контактируют с горной породой на стенках скважины и подключены к источнику тока. Как показано-на фиг. 2, втулки 3, несущие электроды 4, креп тс на штанге. 2 с по мощью колец 5. При необходимости втулки 3 BNtecTe с -электродами 4 можно перемещать относительно штанги 2, мен тем самым рассто ние между ними и глубину ослаблени горной породы вокруг скважины.The device has a drill bit 1 fixed at the end of the rod 2. Directly behind the crown 1 on the rod 2 are two sleeves 3 of dielectric material that are spaced apart from each other and carry electrodes 4 in the form of metal brushes that come into contact with the rock on the walls of the well and connected to a current source. As shown in FIG. 2, the sleeves 3 carrying the electrodes 4 are attached to the rod. 2 using rings 5. If necessary, BNtecTe sleeves 3 with -electrodes 4 can be moved relative to rod 2, thereby changing the distance between them and the depth of weakening of the rock around the well.
Устройство работает следующим образом .The device works as follows.
Электроды 4, устаковлеиные на втулках 3,- входит в скважину вслед за буровой коронкой 1. На необходимой глубине скважины подаетс напр жение на электроды 4, что приводит к пробою породы и к протеKatiHio тока по породе между ними.The electrodes 4, which are mounted on the sleeves 3, enter the well after the drill bit 1. At the required depth of the well, voltage is applied to the electrodes 4, which leads to the breakdown of the rock and to the flow of current across the rock between them.
Величина заглублени тока в породу, а следовательно, глубина ослаблени породы вокруг скважины зависит от рассто ни между электродами 4, что можно регулировать указанным -образом. Электродг 4, враща-. сь вместе со штангой 2, создают вокруг скважины в горной породе разуирочненныйThe magnitude of the current deepening into the rock and, consequently, the depth of rock loosening around the well depends on the distance between the electrodes 4, which can be adjusted in the indicated manner. Electrode 4, rotate-. Subscribe along with rod 2 to create a well-formed around the well in the rock.
механический слой, который может быть легко разрушен механическим инструментом.mechanical layer that can be easily destroyed by a mechanical tool.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772513996A SU642479A1 (en) | 1977-07-25 | 1977-07-25 | Device for electrothermal weakening of rock mechanical strength at drilling holes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772513996A SU642479A1 (en) | 1977-07-25 | 1977-07-25 | Device for electrothermal weakening of rock mechanical strength at drilling holes |
Publications (1)
Publication Number | Publication Date |
---|---|
SU642479A1 true SU642479A1 (en) | 1979-01-15 |
Family
ID=20720647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU772513996A SU642479A1 (en) | 1977-07-25 | 1977-07-25 | Device for electrothermal weakening of rock mechanical strength at drilling holes |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU642479A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107420043A (en) * | 2017-08-10 | 2017-12-01 | 贵州大学 | A kind of drilling Self tightening device matching used with coal seam heating cable and construction method |
-
1977
- 1977-07-25 SU SU772513996A patent/SU642479A1/en active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107420043A (en) * | 2017-08-10 | 2017-12-01 | 贵州大学 | A kind of drilling Self tightening device matching used with coal seam heating cable and construction method |
CN107420043B (en) * | 2017-08-10 | 2023-09-12 | 贵州大学 | Drilling self-tightening device matched with coal seam heating cable and construction method |
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