SU585287A1 - Method of monitoring the coal-rock interface - Google Patents

Method of monitoring the coal-rock interface

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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
Application number
SU752170642A
Other languages
Russian (ru)
Inventor
Борис Ефремович Ярыгин
Петр Самуилович Ляховицкий
Original Assignee
Научно-Производственное Объединение Автоматгормаш
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Научно-Производственное Объединение Автоматгормаш filed Critical Научно-Производственное Объединение Автоматгормаш
Priority to SU752170642A priority Critical patent/SU585287A1/en
Application granted granted Critical
Publication of SU585287A1 publication Critical patent/SU585287A1/en

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)

1. Способ контрол  границы угольпорода , основанный на .преобразовании упругих волн, возникающих при взаимодействии исполнительного органа горной машины с разрушаемым материалом , в электрический сигнал и последующем его сравнении с заданным значением дл  определени  момента врезани  исполнительного органа во вмещающие породы, отличающийс  тем, что, с целью повышени  точности, контролируют соотношение амплитуд сигналов двух различных частот , отличающих.с  , например в 3-4 раза.1. A method of controlling the coalport boundary, based on the conversion of elastic waves arising from the interaction of the executive body of the mining machine with the material to be destroyed, into an electrical signal and its subsequent comparison with a predetermined value to determine the insertion time of the executive body into the host rocks, characterized in that in order to increase accuracy, the ratio of the amplitudes of the signals of two different frequencies that differ from, for example, by a factor of 3 to 4 is controlled. 2. Способ по П.1, о гличающ и и с   тем, что соотношение амплитуд сигналов определ ют по формуле 2. The method according to Claim 1 is characterized by the fact that the ratio of the amplitudes of the signals is determined by the formula ДаYes К TO А,- А,A, - A, ч 2h 2 где К - соотношение амплитуд сигналов двух различных частот;where K is the ratio of the amplitudes of the signals of two different frequencies; AJ- амплитуда сигнала меньшей частоты;AJ is the amplitude of the lower frequency signal; Ag- амплитуда сигнала большей частоты.Ag is the amplitude of the higher frequency signal. Источники информации, прин тые во внимание при экспертизе:Sources of information taken into account in the examination: 1.Авторское свидетельство СССР 1 145504,кл. Е 21 D 5/00,1961.1. The author's certificate of the USSR 1 145504, cl. E 21 D 5 / 00,1961. 2.Авторское свидетельство СССР П49895,кл. GDI Н 1/08, 1961.2. Authors certificate of the USSR P49895, cl. GDI H 1/08, 1961.
SU752170642A 1975-09-03 1975-09-03 Method of monitoring the coal-rock interface SU585287A1 (en)

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

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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)

* Cited by examiner, † Cited by third party
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

Cited By (6)

* Cited by examiner, † Cited by third party
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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