SU585287A1 - Method of monitoring the coal-rock interface - Google Patents
Method of monitoring the coal-rock interfaceInfo
- Publication number
- SU585287A1 SU585287A1 SU752170642A SU2170642A SU585287A1 SU 585287 A1 SU585287 A1 SU 585287A1 SU 752170642 A SU752170642 A SU 752170642A SU 2170642 A SU2170642 A SU 2170642A SU 585287 A1 SU585287 A1 SU 585287A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- ratio
- signals
- amplitudes
- amplitude
- ussr
- Prior art date
Links
Description
амплитуда сигнала большей частоты. amplitude of the higher frequency signal.
На чертеже дана блок-схема устройства , реализующего данный способ.The drawing is a block diagram of the device that implements this method.
Устройство состоит из сейсмодатчиков 1, укрепленных в основани х секций 2 крепи. Каждый из сейсмодатчиков соединен с одним из усилителей 3 которые при помощи коммутирующих устройств 4 подсоединены к линии передачи 5 сигнала на штрек. Сигнал,приход щий на штрек, выдел етс на соответствун цих частотах с помощью блоков 7, например фильтров. The device consists of seismic sensors 1, fixed in the bases of sections 2 of the support. Each of the seismic sensors is connected to one of the amplifiers 3 which, by means of switching devices 4, are connected to the transmission line 5 of the signal per drift. The signal arriving at the drift is extracted at the corresponding frequencies using blocks 7, for example filters.
Полученные сигналы усредн ютс с помощью накопителей 8. В блоке вычитани 9 определ етс их разность, в блоке делени 10 беретс соотношение -f-j и с помощью порогового устройства И по величине этого соотношени определ етс момент врезани исполнительного органа во вмещающие породы.The received signals are averaged with the aid of accumulators 8. In subtraction unit 9, their difference is determined, in division unit 10, the ratio -f-j is taken and using the threshold device. And by the magnitude of this ratio, the moment the executive falls into the host rocks.
В качестве коммутирующих устройств примен ютс , например магнитоуправл емые контакты, соединенные с электромагнитным реле. Воздействие на магнитоуправл емые контакты осуществл етс магнитом, установленным, например на горной машине.The switching devices used are, for example, magnetically controlled contacts connected to an electromagnetic relay. The magnetically controlled contacts are affected by a magnet mounted, for example, on a mining machine.
При приближении исполнительного органа к сейсмодатчику 1 на определенное . рассто ние коммутирующее устройство 4 подключает выход усилител 3 этого сейсмода.тчика к линии передачи 5, сигналы от него поступают в блоки 6 и 7, например фильтры.When the executive body approaches the seismic sensor 1 for a specific one. the distance switching device 4 connects the output of the amplifier 3 of this seismic sensor to the transmission line 5, the signals from it go to blocks 6 and 7, for example filters.
При входе исполнительного органа в зону действи следующего сейсмодатчика коммутируккцее устройство последнего подключает выход его усилител 3 к линии передачи 5, а усилитель 3 предыдущего сейсмодатчика отключаетс от линии передачи.When the actuator enters the zone of the next seismic sensor, the switching device of the latter connects the output of its amplifier 3 to the transmission line 5, and the amplifier 3 of the previous seismic sensor is disconnected from the transmission line.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU752170642A SU585287A1 (en) | 1975-09-03 | 1975-09-03 | Method of monitoring the coal-rock interface |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU752170642A SU585287A1 (en) | 1975-09-03 | 1975-09-03 | Method of monitoring the coal-rock interface |
Publications (1)
Publication Number | Publication Date |
---|---|
SU585287A1 true SU585287A1 (en) | 1977-12-25 |
Family
ID=20631203
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU752170642A SU585287A1 (en) | 1975-09-03 | 1975-09-03 | Method of monitoring the coal-rock interface |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU585287A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008144811A1 (en) * | 2007-05-25 | 2008-12-04 | Orica Explosives Technology Pty Ltd | Use of post-blast markers in the mining of mineral deposits |
US7490507B2 (en) | 2003-05-27 | 2009-02-17 | University Of Queensland | Method for determining the movement of a blast movement monitor and associated rock as a result of blasting operations |
US7614278B2 (en) | 2003-05-27 | 2009-11-10 | The University Of Queensland | Blast movement monitor |
US7891233B2 (en) | 2003-05-27 | 2011-02-22 | Thorncorp Pty Ltd | Blast movement monitor |
CN104500066A (en) * | 2014-10-31 | 2015-04-08 | 三一重型装备有限公司 | Support-shifting control system |
CN108119139A (en) * | 2017-11-20 | 2018-06-05 | 中国神华能源股份有限公司 | A kind of coal mining control system, coal mining system and hydraulic support |
-
1975
- 1975-09-03 SU SU752170642A patent/SU585287A1/en active
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7490507B2 (en) | 2003-05-27 | 2009-02-17 | University Of Queensland | Method for determining the movement of a blast movement monitor and associated rock as a result of blasting operations |
US7614278B2 (en) | 2003-05-27 | 2009-11-10 | The University Of Queensland | Blast movement monitor |
US7891233B2 (en) | 2003-05-27 | 2011-02-22 | Thorncorp Pty Ltd | Blast movement monitor |
WO2008144811A1 (en) * | 2007-05-25 | 2008-12-04 | Orica Explosives Technology Pty Ltd | Use of post-blast markers in the mining of mineral deposits |
CN104500066A (en) * | 2014-10-31 | 2015-04-08 | 三一重型装备有限公司 | Support-shifting control system |
CN108119139A (en) * | 2017-11-20 | 2018-06-05 | 中国神华能源股份有限公司 | A kind of coal mining control system, coal mining system and hydraulic support |
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