ITTO950197A1 - REVERSIBLE DILATOMETER FOR IN SITU MEASUREMENT OF THE SWELLING AND DEFORMATION CHARACTERISTICS OF SOFT ROCKS. - Google Patents

REVERSIBLE DILATOMETER FOR IN SITU MEASUREMENT OF THE SWELLING AND DEFORMATION CHARACTERISTICS OF SOFT ROCKS.

Info

Publication number
ITTO950197A1
ITTO950197A1 IT95TO000197A ITTO950197A ITTO950197A1 IT TO950197 A1 ITTO950197 A1 IT TO950197A1 IT 95TO000197 A IT95TO000197 A IT 95TO000197A IT TO950197 A ITTO950197 A IT TO950197A IT TO950197 A1 ITTO950197 A1 IT TO950197A1
Authority
IT
Italy
Prior art keywords
dilatometer
swelling
reversible
measuring
probe
Prior art date
Application number
IT95TO000197A
Other languages
Italian (it)
Inventor
Changyou Jing
Piergiogio Grasso
Yongsheng Luo
Mohammed Ashraf Mahatab
Guofang Lu
Qiuhua Wei
Shulin Xu
Original Assignee
Geodata S P A
Honai University
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 Geodata S P A, Honai University filed Critical Geodata S P A
Publication of ITTO950197A0 publication Critical patent/ITTO950197A0/en
Publication of ITTO950197A1 publication Critical patent/ITTO950197A1/en

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  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

Dilatometro reversibile per la misurazione delle caratteristiche di rigonfiamento e deformazione di rocce tenere, formato da una sonda tubolare (2), almeno una coppia di organi otturatori a membrana (12, 14) circondanti il corpo (4) della sonda (2) e destinati ad essere riempiti con acqua in pressione ed una cella di misurazione (24) a membrana, circondante il corpo (4) della sonda (2) a cui è associato un trasduttore di pressione (32) ed una pluralità di trasduttori di spostamento (34). Acqua è alimentata nello spazio compreso tra gli otturatori (12, 14) e la cella di misurazione (24) per provocare il rigonfiamento della roccia tenera e misurare lo spostamento radiale della parete a membrana della cella (24) causata dal rigonfiamento della roccia. Lo strumento può essere utilizzato come dilatometro, applicando una pressione uniforme al foro di carotaggio e misurandone la deformazione radiale, o come dilatometro inverso (contrattometro) per misurare il rigonfiamento della roccia intorno al foro di carotaggio.(fig. 1).Reversible dilatometer for measuring the swelling and deformation characteristics of soft rocks, formed by a tubular probe (2), at least a pair of membrane obturator elements (12, 14) surrounding the body (4) of the probe (2) and intended to be filled with pressurized water and a measuring cell (24) with membrane, surrounding the body (4) of the probe (2) with which a pressure transducer (32) and a plurality of displacement transducers (34) are associated . Water is fed into the space between the shutters (12, 14) and the measuring cell (24) to cause the soft rock to swell and measure the radial displacement of the membrane wall of the cell (24) caused by the rock swell. The instrument can be used as a dilatometer, applying uniform pressure to the coring hole and measuring its radial deformation, or as an inverse dilatometer (contractometer) to measure the swelling of the rock around the coring hole. (Fig. 1).

IT95TO000197A 1994-03-14 1995-03-14 REVERSIBLE DILATOMETER FOR IN SITU MEASUREMENT OF THE SWELLING AND DEFORMATION CHARACTERISTICS OF SOFT ROCKS. ITTO950197A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 94111266 CN1115024A (en) 1994-03-14 1994-03-14 In-situ test instrument for soft rock expansion

Publications (2)

Publication Number Publication Date
ITTO950197A0 ITTO950197A0 (en) 1995-03-14
ITTO950197A1 true ITTO950197A1 (en) 1995-09-14

Family

ID=5035154

Family Applications (1)

Application Number Title Priority Date Filing Date
IT95TO000197A ITTO950197A1 (en) 1994-03-14 1995-03-14 REVERSIBLE DILATOMETER FOR IN SITU MEASUREMENT OF THE SWELLING AND DEFORMATION CHARACTERISTICS OF SOFT ROCKS.

Country Status (2)

Country Link
CN (1) CN1115024A (en)
IT (1) ITTO950197A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101487837B (en) * 2009-02-13 2012-07-25 太原理工大学 Tester for changing soft rock expandability by electro-chemistry
CN102519796B (en) * 2012-01-05 2013-06-19 铁道第三勘察设计院集团有限公司 Portable rock expansion tester
CN103499329B (en) * 2013-09-10 2017-01-11 中国工程物理研究院化工材料研究所 Device and method for testing radial deformation of rubber compression test-piece
CN104088666B (en) * 2014-07-09 2016-03-09 中国电建集团华东勘测设计研究院有限公司 A kind of home position testing method of buried soft rock tunnel and in-situ test structure
CN106285666B (en) * 2016-10-25 2019-03-15 中国科学院力学研究所 A kind of shallow-layer soil layer mechanics parameter monitoring method of permafrost region gas hydrates drilling
CN107589058A (en) * 2017-09-28 2018-01-16 上海岩土工程勘察设计研究院有限公司 Double plunger water filling infiltration testing apparatus and its method of work in a kind of hole

Also Published As

Publication number Publication date
CN1115024A (en) 1996-01-17
ITTO950197A0 (en) 1995-03-14

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