SU985288A1

SU985288A1 - Apparatus for receiving seismic information within rock body

Info

Publication number: SU985288A1
Application number: SU802957774A
Authority: SU
Inventors: Вениамин Михайлович Сбоев; Иван Васильевич Шабалин
Original assignee: Институт Горного Дела Со Ан Ссср
Priority date: 1980-06-09
Filing date: 1980-06-09
Publication date: 1982-12-30

Description

Изобретение относитс к горному делу и предназначено дл приёма сейсмической информации в массиве горных пород в широкомчастотном диапазоне .The invention relates to mining and is intended to receive seismic information in a rock mass in the high frequency range.

Известно устройство дл приема упругих колебаний в горном массиве, включающее корпус, датчик и механизм регулируемого прижима чувствительного элемента к стенке скважины Cl).A device for receiving elastic vibrations in a rock mass is known, comprising a housing, a sensor, and a mechanism for adjustable clamping of the sensing element to the borehole wall (Cl).

Недостатком известного устройства вл етс ограниченный диапазон измер емых частот.A disadvantage of the known device is the limited range of measured frequencies.

Известно устройство дл приема сейсмической информации в массиве горных пород, включающее корпус и первичный преобразователь поджатый пружиной с возможностью его радиального перемещени С23.A device for receiving seismic information in a rock mass is known, which includes a housing and a primary transducer that is spring-loaded with the possibility of its radial movement C23.

Недостатками данного устройства вл етс искажение ее частотной характеристики из-за наличии установочных резонансов и непосто нства условий контакта преобразовател с массивом, что снижает точность измерений .The disadvantages of this device are the distortion of its frequency response due to the presence of installation resonances and the inconvenience of the contact conditions of the converter with the array, which reduces the measurement accuracy.

Цель изобретени - повышение точности измерений, за счет обеспечени линейности частотной характеристики устройства в широком диапазоне частот.The purpose of the invention is to improve the measurement accuracy by providing linearity of the frequency response of the device in a wide frequency range.

Указанна цель достигаетс тем, что устройство дл приема сейсмической информации в массиве горных пород, включающее корпус и первичный преобразователь, поджатый пружиной с возможностью его радиального перемещени , снабжено блоками и т 10 гами, при этом т ги охватывают блоки и соединены с концами пружины, а ; преобразователи расположены в гнёз- ,This goal is achieved by the fact that a device for receiving seismic information in an array of rocks, including a housing and a primary transducer, which is compressed by a spring with the possibility of its radial movement, is equipped with blocks and 10 grams, with the plugs covering the blocks and connected to the ends of the spring, and ; the transducers are located in the nest,

дах, выполненных в корпусе.dah, made in the case.

f .f.

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На чертеже изображено предлагаемое устройство. The drawing shows the proposed device.

Устройство содержит корпус 1, на котором посредством резьбовых соеди . нений закреплены кр лика 2 и хвосто20 вик 3. На в6стовике установлено резиновое кольцо 4 дл дополнительной фиксации устройства в скважине. Досылочна штанга 5 с помощью присоединена к хвостовику.The device includes a housing 1, on which by means of threaded connections. In addition, the fastener 2 and the tailing 20 are fastened 3. On the vstavik there is a rubber ring 4 for additional fixation of the device in the well. A roll bar 5 is attached to the shank.

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Первичные преобразователи 6 механических колебаний соединены кабел ми 7 с разъемом 8. Кавели уложены в хвостовике устройства и зафиксированы прижиткшой планкой 9 и винтом 10. The primary transducers of 6 mechanical oscillations are connected by cables 7 to the connector 8. The caves are laid in the shank of the device and fixed by a stick 9 and screw 10.

Claims

30 On primary converters, contacting nozzles 11 about the possibility of sliding are strengthened. case. The primary transducers are installed in the socket 12. And connected to the ends of the spring-shaped spring 13, to which the ends of the flexible rod 14 are also connected, laid in the recess of two blocks 15, which are pressed by screws 16 to the sleeve 17. The device operates as follows. The bending of the ha 14 of the spring is tensioned onto 13 is pressed and the primary converters 6 are drawn into the housing. The device is installed in the well to a predetermined depth, after which the flexible draft 14 is relaxed, the spring 13 is depressed, the primary converters 5 with the contacting nozzles 11 are firmly pressed against the mountain massif. The stem bar 5 is screwed together and retracted. Rubber ring 4 on the shank provides additional fixation of the device in the well. Primary converters b through:. The cable 7 is connected to the measuring apparatus. To remove the device from the well, the bilge rod 5 is screwed, which has a special device for pulling the flexible rod, the flexible rod is tightened, the spring 13 is pressed, the transducers 6 with contact nozzles 11 are sunk in the housing 1, the device moves freely in the well . The proposed device allows receiving seismic information in the frequency range up to 17-20 kHz without its distortions, and also provides a constant pressure of the primary transducers to the borehole wall. Invention The device for receiving seismic information in the rock mass, including the body and the primary A spring-loaded converter with the possibility of its radial movement is different in that, in order to increase the measurement accuracy, by ensuring the linearity of the frequency response of the device in A wide range of frequencies, the device is equipped with blocks and rods, with the wires covering the blocks and connected to the ends of the spring, and the transducers are located in sockets made in the housing. Sources of information taken into account during the examination 1. USSR author's certificate No. 586410, cl. E 21 C 39/00, 1978.

2.King- M.S.j FieEd studiesof microscisraic energy emission SUM Bueeetin 7 1979, 69, 770.79-85.