SU1668662A1 - Method for shear strength testing of soft and medium-hard rocks - Google Patents
Method for shear strength testing of soft and medium-hard rocks Download PDFInfo
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- SU1668662A1 SU1668662A1 SU894632026A SU4632026A SU1668662A1 SU 1668662 A1 SU1668662 A1 SU 1668662A1 SU 894632026 A SU894632026 A SU 894632026A SU 4632026 A SU4632026 A SU 4632026A SU 1668662 A1 SU1668662 A1 SU 1668662A1
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- monolith
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Изобретение относитс к горному делу. Цель изобретени - повышение точности и надежности. В массиве горной породы выдел ют монолит (М) 1 так, что последний остаетс св занным с массивом одной плоскостью. К М 1 через пластину 3 и ролики 4 прикладывают горизонтальную сжимающую нагрузку от гидравлической подушки 5. Дл задани ориентированной плоскости сдвига М 1 обхватывают по периметру двум гибкими хомутами 7. По зазору между последними в М 1 выполн ют вертикальный надрез 8 до момента отделени под собственной массой отрезаемой части 9 М 1. Измер ют площадь сдвига. По массе части 9 М 1 определ ют сдвигающее усилие. По полученным результатам с учетом величины нормальной нагрузки оценивают сопротивление на срез испытываемой породы. 1 ил.The invention relates to mining. The purpose of the invention is to increase accuracy and reliability. In the rock massif, a monolith (M) 1 is separated so that the latter remains connected with the massif in one plane. A horizontal compressive load from the hydraulic cushion 5 is applied to the M 1 through the plate 3 and the rollers 4. To set the oriented shear plane, M 1 is wrapped around the perimeter with two flexible clamps 7. A vertical cut is made in the gap between the latter in M 1 until its own the mass of the cut-off part is 9 M 1. The shear area is measured. The mass of part 9 M 1 determines the shear force. According to the results obtained, taking into account the magnitude of the normal load, the resistance to the cut of the test rock is estimated. 1 il.
Description
Изобретение относитс к горному делу и может быть использовано при определении временного сопротивлени на срез горных пород в полевых услови х.The invention relates to mining and can be used in determining temporary resistance to cut rocks in the field.
Цель изобретени - повышение точности и надежности.The purpose of the invention is to increase accuracy and reliability.
На чертеже представлена схема испытани сопротивлени на срез горной породы .The drawing shows a test pattern of resistance to cutting a rock.
Способ проведени полевых испытаний сопротивлени на срез м гких и полускальных горных пород осуществл ют следующим образом,The method of conducting field tests of resistance to soft and semi-rock rocks is carried out as follows.
В массиве горной породы выдел ют монолит 1 породы, вырезанный из стенки шурфа 2 и св занный с массивом одной плоскостью, К монолиту 1 породы через пластину 3 и ролики 4 прикладывают горизонтальную сжимающую нагрузку от гидравлической подушки 5. Расчетную силу сжимающей нагрузки на монолит 1 фиксируют датчиком 6, установленным между стенкой шурфа 2 и гидравлической подушкой 5.In the rock massif, a monolith of rock 1 is cut out, cut out of the wall of the hole 2 and connected to the massif by one plane. A horizontal compressive load from the hydraulic cushion 5 is applied to the rock monolith 1 through plate 3 and rollers 4. The calculated compressive force on monolith 1 is fixed sensor 6 installed between the wall of the hole 2 and the hydraulic cushion 5.
Дл задани ориентированной плоскости сдвига монолит 1 обхватывают по периметру двум гибкими хомутами 7, например из стеклоткани. По зазору между гибкими хомутами 7 в монолите 1 медленно выполн ют вертикальный надрез 8 до состо ни равновеси между весом отрезаемой части 9 монолита 1 и сопротивлением породы сдвигу по ориентированной плоскости 10. В момент равновеси происходит отделениеTo assign an oriented shear plane, monolith 1 is wound around the perimeter with two flexible clamps 7, for example made of glass fiber. Along the gap between the flexible clamps 7 in monolith 1, a vertical incision 8 is slowly cut to a state of equilibrium between the weight of the cut off part 9 of monolith 1 and the rock's resistance to shear along the oriented plane 10. At the moment of equilibrium, separation occurs
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под собственным весом отрезаемой части 9 монолите 1. Измер ют площадь сдвига, По /весу част 9 монолита 1 определ ют сдвигающее усилив. По полученным результатам с учетом величины нормальной нагрузки оценивают сопротивление на срез испытываемой породы.under the own weight of the cut-off part 9 of the monolith 1. The shear area is measured. By weight / weight of part 9 of the monolith 1, the shearing force is determined. According to the results obtained, taking into account the magnitude of the normal load, the resistance to the cut of the test rock is estimated.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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SU894632026A SU1668662A1 (en) | 1989-01-04 | 1989-01-04 | Method for shear strength testing of soft and medium-hard rocks |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU894632026A SU1668662A1 (en) | 1989-01-04 | 1989-01-04 | Method for shear strength testing of soft and medium-hard rocks |
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SU1668662A1 true SU1668662A1 (en) | 1991-08-07 |
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SU894632026A SU1668662A1 (en) | 1989-01-04 | 1989-01-04 | Method for shear strength testing of soft and medium-hard rocks |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103278613A (en) * | 2013-04-27 | 2013-09-04 | 清华大学 | Device and method for producing simulated horizontal stress in model test |
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1989
- 1989-01-04 SU SU894632026A patent/SU1668662A1/en active
Non-Patent Citations (1)
Title |
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Черный Г.И. Устойчивость подрабатываемых бортов карьеров, М.: Недра, 1980, с. 92 -93. Прочность и деформируемость горных пород, под ред. А.Б.Фадеева, М.: Недра, 1979, С.213- 214. * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103278613A (en) * | 2013-04-27 | 2013-09-04 | 清华大学 | Device and method for producing simulated horizontal stress in model test |
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