SU723128A1 - Apparatus for determining the degree of convergence and shrinking of fill-in mass - Google Patents

Apparatus for determining the degree of convergence and shrinking of fill-in mass Download PDF

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Publication number
SU723128A1
SU723128A1 SU711639405A SU1639405A SU723128A1 SU 723128 A1 SU723128 A1 SU 723128A1 SU 711639405 A SU711639405 A SU 711639405A SU 1639405 A SU1639405 A SU 1639405A SU 723128 A1 SU723128 A1 SU 723128A1
Authority
SU
USSR - Soviet Union
Prior art keywords
convergence
determining
shrinking
fill
mass
Prior art date
Application number
SU711639405A
Other languages
Russian (ru)
Inventor
Владимир Васильевич Добровольский
Владимир Ильич Симонов
Эдуард Иосифович Гайко
Александр Васильевич Гостев
Original Assignee
Ордена Трудового Красного Знамени Институт Горного Дела Им.А.А.Скочинского
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 Ордена Трудового Красного Знамени Институт Горного Дела Им.А.А.Скочинского filed Critical Ордена Трудового Красного Знамени Институт Горного Дела Им.А.А.Скочинского
Priority to SU711639405A priority Critical patent/SU723128A1/en
Application granted granted Critical
Publication of SU723128A1 publication Critical patent/SU723128A1/en

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Description

The invention relates to mining, in particular, to devices that allow the measurement of the convergence and shrinkage of the backfill in mining, minerals, by the underground method. A device for determining the convergence and shrinkage of a backfill array is known, having a telescopic rack with a sensor connected to a double electrical circuit communication, and an instrument for measuring the resistance of the circuit Llj on the drift. The disadvantage of such a device is the unreliability in operation when measuring convergence and the impossibility of using IR to measure the shrinkage of a backfill array. The purpose of the invention is to ensure simultaneous measurement of convergence and shrinkage of the backfill array by ensuring the autonomy of the device operation. This is achieved by providing the rack with pits with legs, which are fixed in the roof and the soil with the help of anchor bolts. It has a measuring mechanism, the axis of which is connected with a cable and a spring with the bottom plate of the rack4. In FIG. 1 shows the proposed device, the cut; fig 2 is the same in the array. The device consists of a flange 1 on which a measuring mechanism is fixed, having a pulley 2 rigidly connected to the axis of the variable resistance motor 3. The variable resistance is held in a static state or driven by a spring 4. A cable 5 is wound on the pulley 2, the free end of which passes through salts, the dolina seal 6 is attached to the ring 7, to which, for ease of installation, wire 8 is attached, its end is bent and held at the bottom 9 of the extendable pipe 1O. At the end of the retractable pipe there is a paw 11, which is fixed by means of anchor bolts 12 pre-concreted in my
those mounting. VN) —Green pipe 1O enters the outer pipe 13, which with its flange fastens with flange 1 to the flange 1, and along with the lid 14, on the lid there are two pins 15 and 16, insulated with gland 17 through each of these pins 15 and the emergency cables 16. A stand in the lava is fastened with anchor bolts 12 in the roof 18 and the ground.
The principle of operation is that the stand in the lava is fastened in the roof and the soil with the help of anchor bolts. When the roof and the soil come together, the pillars (outer and inner pipes) 1O and 13 enter into each other and the resistance sensor (not shown) shows a change in resistance, which is read on the drift. In the event that the width of the cleaning space is increased by the spring 4 and the cable 5, the resistance sensor rotates in the opposite direction and shows an increase in resistance. By calibrating the sensor, the magnitude of the approaching rocks is determined as in the

Claims (1)

1. Bilik Sh. M., et al. Instruments and equipment for the study of the manifestations of rock pressure. -M., Ugletekhizdat,
1958, p. 158 (prototype).
KVVf I KNXXXN IVVVVM TVOOj
FIG, I
SU711639405A 1971-03-24 1971-03-24 Apparatus for determining the degree of convergence and shrinking of fill-in mass SU723128A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU711639405A SU723128A1 (en) 1971-03-24 1971-03-24 Apparatus for determining the degree of convergence and shrinking of fill-in mass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU711639405A SU723128A1 (en) 1971-03-24 1971-03-24 Apparatus for determining the degree of convergence and shrinking of fill-in mass

Publications (1)

Publication Number Publication Date
SU723128A1 true SU723128A1 (en) 1980-03-25

Family

ID=20470355

Family Applications (1)

Application Number Title Priority Date Filing Date
SU711639405A SU723128A1 (en) 1971-03-24 1971-03-24 Apparatus for determining the degree of convergence and shrinking of fill-in mass

Country Status (1)

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SU (1) SU723128A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4382335A (en) * 1981-06-09 1983-05-10 The United States Of America As Represented By The United States Department Of Energy Head assembly for multiposition borehole extensometer
US4514905A (en) * 1983-09-26 1985-05-07 Union Oil Company Of California Convergence extensometer for measuring mine roof subsidence
US4913499A (en) * 1987-12-17 1990-04-03 Coal Industry (Patents) Limited Equipment and method for measuring convergence
US5423638A (en) * 1991-10-18 1995-06-13 Gullick Dobson Limited Mine roof supports
US5539986A (en) * 1994-01-13 1996-07-30 Queen's University At Kingston Device and method for remote sensing of rock movements in mines
CN110318706A (en) * 2019-07-15 2019-10-11 神华神东煤炭集团有限责任公司 A kind of method that drilling operation crosses goaf

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4382335A (en) * 1981-06-09 1983-05-10 The United States Of America As Represented By The United States Department Of Energy Head assembly for multiposition borehole extensometer
US4514905A (en) * 1983-09-26 1985-05-07 Union Oil Company Of California Convergence extensometer for measuring mine roof subsidence
US4913499A (en) * 1987-12-17 1990-04-03 Coal Industry (Patents) Limited Equipment and method for measuring convergence
US5423638A (en) * 1991-10-18 1995-06-13 Gullick Dobson Limited Mine roof supports
US5539986A (en) * 1994-01-13 1996-07-30 Queen's University At Kingston Device and method for remote sensing of rock movements in mines
CN110318706A (en) * 2019-07-15 2019-10-11 神华神东煤炭集团有限责任公司 A kind of method that drilling operation crosses goaf
CN110318706B (en) * 2019-07-15 2021-06-04 神华神东煤炭集团有限责任公司 Method for drilling construction to pass through goaf

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