SU1209895A1 - Method of controlling rock properties in rock body - Google Patents
Method of controlling rock properties in rock body Download PDFInfo
- Publication number
- SU1209895A1 SU1209895A1 SU843781374A SU3781374A SU1209895A1 SU 1209895 A1 SU1209895 A1 SU 1209895A1 SU 843781374 A SU843781374 A SU 843781374A SU 3781374 A SU3781374 A SU 3781374A SU 1209895 A1 SU1209895 A1 SU 1209895A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- amplitude
- rock
- reference pressure
- array
- zone
- Prior art date
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Description
Изобретение относитс к горной промьшшенности и предназначено дл использовани виброисточников при ведении горных работ с целью управлени , зоной опорного давлени и снижени выбросоопасности пластов.The invention relates to the mining industry and is intended to use vibratory sources in mining operations for the purpose of controlling the zone of the reference pressure and reducing the outburst risk of the formations.
Цель изобретени - повьшение эффективности управлени свойствами горных пород и зоной опорного давлени в очистном забое. The purpose of the invention is to increase the effectiveness of controlling the properties of rocks and the reference pressure zone in the longwall.
Способ осуществл етс следующим образом.The method is carried out as follows.
В очистном забое по всей его длине размещают виброисточники, в качестве которых могут быть использова- 5 ны, например, механизированные крепи или гидрофицированна крепь Спутник. В угольном пласте бур т скважины глубиной большей рассто ни до максимума зоны опорного давлени 20 и глубины разработки призабойной части пласта, в которых размещаютIn the cleaning face, vibration sources are placed along its entire length, which can be used, for example, mechanized roof supports or hydroficated satellite supports. In a coal seam, a well is drilled with a depth of a greater distance to the maximum of the reference pressure zone 20 and the depth of development of the bottomhole formation, in which
1209895212098952
датчики деформаций. По известным методам определ ют пределы прочности и текучести угл . Вибраторами в кровле и почве пласта возбуждают уп- S ругие волны с амплитудой в диапазоне амплитуд с граничными значени ми, соответствующими пределу текучести и пределу прочности угл , и с длиной волны, не менее чем в два раза 10 превышающей рассто ние от забо strain gauges. The limits of strength and fluidity of coal are determined by known methods. Vibrators in the roof and in the soil of the formation excite fi-S other waves with amplitudes in the amplitude range with boundary values corresponding to the yield strength and strength of the coal, and with a wavelength not less than twice 10 times the distance from the hole.
до максимума зоны опорного давлени . Например, при пределе прочности Si:ж 2 Ша и пределе текучести угл 65 0,5 МПа и частоте колебаний f 20 Гц задают амплитуду колебаний to the maximum of the reference pressure zone. For example, when the strength limit of Si: W 2 Sha and the yield strength of coal is 65 0.5 MPa and the oscillation frequency f 20 Hz, the amplitude of oscillation is set
А 0,5 мм.A 0.5 mm.
По показани м датчиков деформаций след т за поведением мйксимума зоны опорного давлени и при смене деформации сжати деформацией раст жени , вибровоздействие прекращают.According to the readings of the strain sensors, the behavior of the myximum of the reference pressure zone is monitored and, when the compression deformation is changed by the strain of stretching, the vibration effect ceases.
А 0,5 мм.A 0.5 mm.
По показани м датчиков деформаций след т за поведением мйксимума зоны опорного давлени и при смене деформации сжати деформацией раст жени , вибровоздействие прекращают.According to the readings of the strain sensors, the behavior of the myximum of the reference pressure zone is monitored and, when the compression deformation is changed by the strain of stretching, the vibration effect ceases.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU843781374A SU1209895A1 (en) | 1984-08-14 | 1984-08-14 | Method of controlling rock properties in rock body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU843781374A SU1209895A1 (en) | 1984-08-14 | 1984-08-14 | Method of controlling rock properties in rock body |
Publications (1)
Publication Number | Publication Date |
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SU1209895A1 true SU1209895A1 (en) | 1986-02-07 |
Family
ID=21135002
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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SU843781374A SU1209895A1 (en) | 1984-08-14 | 1984-08-14 | Method of controlling rock properties in rock body |
Country Status (1)
Country | Link |
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SU (1) | SU1209895A1 (en) |
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1984
- 1984-08-14 SU SU843781374A patent/SU1209895A1/en active
Non-Patent Citations (1)
Title |
---|
Якубовска Л.Н. О возможности использовани резонансных влений дл разрушени угл и пород. - В сб. Физико-механические свойства углей и горных пород и методы их разрушени . Науч.сообщени , вып. 155. - М.: ИГД им. А.А.Скочинского, 1977, с. 58-65. Авторское свидетельство СССР № 901527, кл. Е 21 С 41/04, 1979. * |
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