KR100926318B1 - Holder for measuring electrical resistivity and apparatus for measuring electrical resistivity - Google Patents

Abstract

The present invention relates to an electrical resistivity measuring holder and an electrical resistivity measuring device for measuring the electrical resistivity of a rock sample. More particularly, both ends of the rock sample are pressed at a constant pressure and the water content of the rock sample is maintained at a predetermined level or more. An electrical resistivity measuring holder and an electrical resistivity measuring instrument capable of measuring the electrical resistivity of a rock sample in one state.

Rock, electrical resistivity, pressure, moisture content, holder

Description

Holder for measuring electrical resistivity and apparatus for measuring electrical resistivity

The present invention relates to an electrical resistivity measuring holder and an electrical resistivity measuring device for measuring the electrical resistivity of a rock sample. More specifically, the rock samples are pressed at both ends of the rock sample at a constant pressure and the water content of the rock sample is reduced. An electrical resistivity measuring holder and an electrical resistivity measuring instrument capable of measuring the electrical resistivity of a sample.

The measurement of the resistivity of rocks occupies an important place in many areas such as soil investigation, rock classification in civil design, soft soil evaluation, ground constant estimation, strata classification, geological structural lines, and fault fractured zone evaluation.

The most important factors that determine the electrical resistivity of rocks are voids and moisture content. Therefore, accurate measurement of the specific resistivity of rock samples requires the development of a device that can sufficiently compress the rock sample and the electrode and keep the sample dry during the measurement. It is true.

The present invention can easily measure the electrical resistivity of a rock sample and while holding the rock sample firmly, the electrical resistivity capable of measuring the electrical resistivity in a state in which the rock sample and the electrode can be in good contact with the moisture content of the rock sample is suppressed. It is intended to provide a measuring holder and an electrical resistivity meter.

The present invention is a sample sample barrel in which the rock sample is introduced and the water is fresh; A right horizontal holder fixed to the right side of the sample drawer; A right horizontal slide mounted on the right horizontal holder such that a left end is movable in left and right in a state where the left end is inserted into the sample introduction container; Right moving means mounted to the right horizontal fixing stand to move the right horizontal moving table to the left and right sides; An exposed groove is formed from the left side so that the inserted first mesh electrode is exposed at the left end, and is fixed to the left end of the right horizontal movable table, and the right sample is brought into close contact with the inserted first mesh electrode and the right end of the rock sample. Grips; A left horizontal holder fixed to the left side of the sample introduction tube; A left horizontal slide mounted on the left horizontal holder so that the right end thereof is movable to the left and right in a state where the right end is inserted into the sample introduction container; Left moving means mounted to the left horizontal fixing stand to move the left horizontal moving table to the left and right sides; An exposed groove is formed from the right side so that the inserted second mesh electrode is exposed at the right end, and is fixed to the right end of the left horizontal slide, and the left sample is brought into close contact with the inserted second mesh electrode and the left end of the rock sample. It relates to an electrical resistivity measuring holder comprising: a gripper.

The present invention is fixed to the front of the sample drawer front upper and lower fixed; A front shanghai dongdae mounted on the front upper and lower fixed bases such that a rear end thereof is movable up and down in a state in which the sample inlet is drawn; Vertical movement means mounted on the front upper and lower fixed bands to move the front shanghai dongdae up and down; The groove is formed so that the rock sample is settled on the horizontal axis of the right horizontal slide and the left horizontal slide, and is fixed to the rear end of the front shandong band, and the right end of the rock sample is moved according to the left side movement of the right sample holder. And a sample holder for holding the left end of the rock sample in the left sample holding zone according to the right movement of the left sample holding zone.

In the present invention, the groove formed in the sample stabilizer may be a groove having an upper portion open so that the rock sample moves from the top to the bottom, and the present invention is placed in the groove of the sample stabilizer, and the rock sample is It may include an auxiliary sample guide that is formed from the top to the bottom and the groove is formed in the upper opening to be positioned on the horizontal axis of the right horizontal slide and the left horizontal slide, the right sample holder is the first mesh electrode Insertion grooves are formed from the upper portion to insert and insert from the upper portion, insertion grooves from the upper portion may be formed from the upper portion so that the second mesh electrode is inserted and inserted from the upper portion to the left sample holder, and the right horizontal carrier is at the right end. The right horizontal fixing rod is interpolated and a rack gear is formed along the longitudinal direction on the circumferential surface, and the right moving means A worm wheel rotating about an axis facing downward, a worm gear engaged with the worm wheel, a pinion gear spaced apart from the worm gear and mounted to a central axis of the worm gear to engage with the rack gear; It may include a rotation means for rotating the worm wheel, the vertical movement means is a first bevel gear for rotating around the axis in the forward and backward direction, and the first bevel gear meshing with respect to the axis in the vertical direction It may include a rotating second bevel gear, a male screw formed on the central axis of the second bevel gear, a female screw coupled to the male screw and the vertical movement nut fixed to the front end of the front shandong.

On the other hand, the present invention also relates to an electrical resistivity measuring instrument comprising any one of the above electrical resistivity measuring holders.

According to the present invention, the compressive force acting between the rock sample and the first mesh electrode and the second mesh electrode can maintain a constant state, can maintain the moisture contained in the rock sample and can stably position the rock sample. The electrical resistivity of can be measured accurately and with good repeatability.

According to the present invention, the rock sample is placed in the sample settable, and the rock sample can be stably held on the horizontal axis of the right and left horizontal slides by using the right moving means, the left moving means, and the up and down moving means. Resistivity measurement is easy.

Hereinafter, with reference to the drawings will be described in detail an embodiment of the present invention.

Example 1

Example 1 relates to an electrical resistivity measuring holder according to the invention. FIG. 1 is a perspective view of Embodiment 1, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a front view of FIG. 1, FIG. 4 is a schematic plan view of a right horizontal slide and a right moving means of FIG. 1 is a perspective view of the right sample holder of FIG. 1, FIG. 6 is a schematic side view of the vertical movement means of FIG. 1, and FIG. 7 is a schematic side view of the sample holder of FIG.

1 to 3, the first embodiment includes a sample introduction tube 100, a right horizontal holder 210, a right horizontal holder 220, a right moving means (not shown), and a right sample holder 240 ), Left horizontal guide 310, left horizontal guide (320), left moving means (not shown), left side sample holder (340), front upper and lower mount (410), front Shanghai Dongdae (420), up and down It has a moving means 430 (see Fig. 6).

Referring to FIG. 1, the sample introduction tube 100 is formed in a box shape capable of freshening water at a lower portion thereof. Sample introduction tube 100 is formed so that the top is open, it may be provided with a lid (not shown) for closing the top.

1 to 3, the right horizontal holder 210 is fixedly fastened to the right side of the sample introduction tube 100. The right horizontal guide 210 has a cylinder-shaped first right horizontal guide 211 and a square cylindrical second right horizontal guide 212. The first right horizontal holder 211 may have a flange portion 211-1 formed at the left end thereof and may be fixed to the right side surface of the sample introduction tube 100 through the flange portion 211-1. A cutout hole (not shown) is formed in a predetermined portion of the outer circumferential surface of the first right horizontal holder 211, and includes the cutout hole (not shown), and the second right horizontal holder 212 includes the first right horizontal holder. It is fixed to the outer peripheral surface of 211.

Referring to FIG. 2, the right horizontal holder 220 is mounted on the right horizontal holder 210 so as to be movable left and right. The right horizontal slide 220 has a left end protruding out of the first right horizontal fixation stand 211 and is positioned inside the sample drawer 100, and a predetermined portion including the right end is placed on the first right horizontal fixer 211. Interpolated. Referring to FIG. 4, the right horizontal slide 220 may be formed in a linear cylindrical shape. On the circumferential surface of the right horizontal movable table 220, a rack gear 222 is formed along the longitudinal direction.

Referring to FIG. 4, the right moving means (not shown) includes a worm wheel 232 rotating about an axis pointing upward and downward, a worm gear 234 engaged with the worm wheel 232, and the worm A pinion gear 236 spaced apart from the gear 234 and mounted on the central axis of the worm gear 234 and engaged with the rack gear 222, and a rotation means 238 for rotating the worm wheel 232. , See FIG. 1). Referring to FIG. 1, the rotating means 238 is mounted to the second right horizontal holder 212. As the worm gear 234 rotates as the rotation means 238 rotates, the pinion gear 236 rotates as the worm gear 234 rotates, and the rack gear 222 as the pinion gear 236 rotates. ) Moves and the right horizontal slide 220 moves to the left or the right as the rack gear 222 moves. That is, the right moving means (not shown) is a moving means for moving the right horizontal movable table 220 to the left and right.

2 and 5, the right sample holder 240 is fixed to the left side end of the right horizontal slide 220. In particular, referring to FIG. 5, the right sample holder 240 has an exposed groove 242 drawn in from the left side so that the first mesh electrode (not shown) inserted into the right side is exposed at the left end. In addition, the bottom surface of the exposed groove 242 is formed in a flat plate shape to closely contact the right end of the rock sample introduced into the first mesh electrode and the exposed groove 242 inserted into the exposed groove 242. In addition, an insertion groove 244 is formed in the right sample holder 240 from the top so that the first mesh electrode is inserted from the top and inserted into the exposed groove 242. The insertion groove 244 is recessed along the circumferential surface of the right sample holder 240 to communicate with the exposure groove 242. That is, the first mesh electrode (not shown) is introduced through the insertion groove 244 and inserted into the exposure groove 242.

1 to 3, the left horizontal fixing unit 310 is fixedly fastened to the left side of the sample introduction tube 100. The left horizontal guide 310 has a cylinder-shaped first left horizontal guide 311 and a rectangular cylindrical second left horizontal guide 312. The first left horizontal holder 311 may have a flange portion 311-1 formed at a right end thereof and may be fixed to a left side surface of the sample introduction tube 100 through the flange portion 311-1. A cutout hole (not shown) is formed in a predetermined portion of the outer circumferential surface of the first left horizontal holder 311, and includes the cutout hole (not shown), and the second left horizontal holder 312 includes a first left horizontal holder (not shown). It is fixed to the outer circumferential surface of 311).

Referring to FIG. 2, the left horizontal guide 320 is mounted to the left horizontal guide 310 to move left and right. The left horizontal slide 320 has the right end protruding out of the first left horizontal fixation stand 311 and is located inside the sample drawer 100, and a predetermined portion including the left end has the first left horizontal fixation stand 311. Is interpolated on. Similar to the right horizontal slide 220, the left horizontal slide 320 may be formed in a linear cylindrical shape. On the circumferential surface of the left horizontal slide 320, a rack gear (not shown) is formed along the longitudinal direction.

Similar to the right moving means (not shown), the left moving means (not shown) is fitted with a worm wheel (not shown) that rotates about an axis pointing upward and downward, and the worm wheel (not shown). Physics worm gear (not shown), and pinion gears spaced apart from the worm gear (not shown) mounted on the central axis of the worm gear (not shown) and engaged with the rack gear (not shown) ( And a rotating means 338 (see FIG. 1) for rotating the worm wheel (not shown). 1 and 2, the rotating means 338 is mounted on the second left horizontal holder 312. As the rotating means 338 rotates, the principle of moving the left horizontal slide 320 to the left or right is the same as the principle of moving the right horizontal slide 220 to the left or right. That is, the left moving means (not shown) is a moving means for moving the left horizontal movable table 320 to the left and right.

2, the left sample holder 340 is fixed to the right end of the left horizontal slide 320. Similar to the right sample holder 240, the left sample holder 340 has an exposed groove (not shown) drawn in from the right side so that the second mesh electrode (not shown) inserted therein is exposed at the right end. . In addition, the bottom surface of the exposed groove (not shown) is in close contact with the left end of the rock sample introduced into the exposed groove (not shown) and the second mesh electrode inserted into the exposed groove (not shown). Is formed into a flat plate shape. In addition, an insertion groove 344 is formed in the left sample holder 340 so that the second mesh electrode is inserted from the top and inserted into the exposed groove (not shown). The insertion groove 344 is recessed along the circumferential surface of the left sample holder 340 and communicates with the exposure groove (not shown). That is, the second mesh electrode (not shown) is introduced through the insertion groove 344 and inserted into the exposed groove (not shown).

1 to 3, the front upper fixing stand 410 is fixed to the front of the sample introduction tube 100. The front upper and lower mount 410 may be in the form of a box.

1 to 3 and 6, up and down moving means 430 is mounted on the front upper and lower mount 410. Referring to FIG. 6, the vertical movement means 430 rotates about a first bevel gear 431 rotating about an axis in the front-rear direction, and an axis in the vertical direction in engagement with the first bevel gear 431. Up and down moving nuts formed with a second bevel gear 432, a male screw 433 formed on the center axis of the second bevel gear 432, and a female screw 434-1 engaged with the male screw 433. 434 and rotating means 436 (see FIG. 1) for rotating the first bevel gear 431. Although not shown in the drawing, the vertical movement nut 434 is prevented from being rotated left and right and mounted only to be movable. As the rotating means 436 (see FIG. 1) rotates, the first bevel gear 431 rotates, and as the first bevel gear 431 rotates, the second bevel gear 432 rotates, and the second bevel gear 431 rotates. As the bevel gear 432 rotates, the male screw 433 rotates, and as the male screw 433 rotates, the vertical movement nut 434 moves up and down. That is, the vertical movement means 430 is a movement means for moving up and down the front shandong daedae 420 which will be described later.

Referring to FIG. 6, the front shandong daedae 420 is mounted to the front upper and lower mount 410 by its front end being fixed to the vertical movement nut 434. 1, 2 and 7, the front shandong daedae 420 is installed so as to maintain the rear end is drawn in the sample introduction container 100.

Referring to FIGS. 2 and 7 (a), the sample set 440 is fixedly connected to the rear end of the front shandong band 420. In the sample support 440, a groove 440-1 is formed so that the rock sample is settled in the circumferential direction, and the groove 440-1 has the upper portion opened so that the rock sample moves from the top to the bottom. Is formed into a "shape. The rock sample is placed in the groove 440-1 of the sample support table 440 so that the central axis of the columnar rock sample is horizontal, so that the right end of the rock sample moves along the left side of the right sample holder 240. The left end of the rock sample is gripped by the left sample holder 340 according to the right movement of the left sample holder 340.

Referring to FIG. 7B, the auxiliary sample stabilizer 442 may be placed in the sample stabilizer 440. An auxiliary sample support 442 is formed with a groove 442-1 having an upper portion open so that the rock sample moves from top to bottom and is settled in left and right directions. Auxiliary sample set 442 is a sample set used for convenience when placing a small diameter rock sample.

Hereinafter, the operation of the first embodiment described above will be described.

Since the rock is located underground and maintains a certain degree of humidity, even if the electrical resistivity is measured after saturating the rock sample with water, the electrical resistivity and other resistivity values in the state where the water evaporates and are located in the ground There is a problem that cannot be measured. Therefore, by filling the sample introduction cylinder 100 with water and placing the rock sample above the water surface, it is possible to prevent the water content of the rock sample from dropping rapidly. At this time, the upper portion of the sample introduction container 100 can be closed with a lid (not shown).

Referring to FIGS. 2 and 7, the rock sample is placed in the left and right directions in the groove 440-1 of the sample set 440. In this case, the front shandong band 420 is moved so that the center line in the longitudinal direction of the rock coincides with the line connecting the center of the right sample holder 240 and the left sample holder 340 according to the size of the rock sample. The movement of the front shandong band 420 is performed by operating the vertical movement means 430.

Referring to FIG. 2, when the rock sample is placed on the sample holder 440, the right horizontal holder 220 and the left horizontal holder 320 are moved to move the right sample holder 240 and the left sample holder 340. Make sure that the right and left sides of the rock sample are firmly fixed. At this time, the first sample electrode (not shown) and the second mesh electrode (not shown) are inserted into the right sample holder 240 and the left sample holder 340, so that the rock sample and the sample holders 240 and 340 are inserted. Close contact between At this time, the first mesh electrode (not shown) and the second mesh electrode (not shown) are in surface contact with all of the right side and the left side of the rock sample so that current can flow evenly on the cross section of any position of the rock sample. .

In this state, the electrical resistivity of the rock sample is measured using a current electrode and a potential electrode connected to the first mesh electrode and the second mesh electrode.

According to the present invention, the compressive force acting between the rock sample and the first mesh electrode and the second mesh electrode can be maintained at a constant state, and the moisture contained in the rock sample can be maintained at a constant level, and the rock sample is located underground. It is possible to measure the electrical resistivity of the rock sample in the same or similar state as.

In the present invention, the rock sample is placed on the sample set 440, and the rock sample is stably used by using the right moving means (not shown), the left moving means (not shown), and the up and down moving means 430. Since it can be gripped, the electrical resistivity measurement of the rock sample is easy and quick.

Example 2

Example 2 relates to an electrical resistivity measuring instrument including Example 1 described above. Although not shown in the drawings, the second embodiment includes a current electrode and a potential electrode, a current electrode, and a potential connected to the first mesh electrode, the second mesh electrode, the first mesh electrode, and the second mesh electrode, in addition to the electrical resistivity measurement holder of the first embodiment. And an analyzer connected to the electrode.

The first mesh electrode and the second mesh electrode are inserted into the right sample holder 240 and the left sample holder 340, respectively. The analyzer measures the electric resistivity of the rock sample by measuring the voltage applied between the first mesh electrode and the second mesh electrode and the current flowing between the first mesh electrode and the second mesh electrode. This process is well known in the art, so a detailed description thereof will be omitted.

1 is a perspective view of a first embodiment.

Figure 2 is a plan view of Figure 1;

3 is a front view of FIG. 1;

4 is a schematic plan view of the right horizontal slide and the right moving means of FIG.

5 is a perspective view of the right sample holder of FIG.

Figure 6 is a schematic side view of the vertical movement means of Figure 1;

Figure 7 is a schematic side view of the sample set of Figure 1;

<Description of the symbols for the main parts of the drawings>

100: sample drawer 210: right horizontal holder

220: right horizontal slide 240: right sample holder

310: left horizontal guide 320: left horizontal guide

340: left sample holder 410: front upper and high

420: Shanghai East University 430: vertical transportation

Claims (8)

A sample introduction container in which rock samples are introduced and water is fresh; A right horizontal holder fixed to the right side of the sample drawer; A right horizontal slide mounted on the right horizontal holder such that a left end is movable in left and right in a state where the left end is inserted into the sample introduction container; Right moving means mounted to the right horizontal fixing stand to move the right horizontal moving table to the left and right sides; An exposed groove is formed from the left side so that the inserted first mesh electrode is exposed at the left end, and is fixed to the left end of the right horizontal movable table, and the right sample is brought into close contact with the inserted first mesh electrode and the right end of the rock sample. Grips; A left horizontal holder fixed to the left side of the sample introduction tube; A left horizontal slide mounted on the left horizontal holder so that the right end thereof is movable to the left and right in a state where the right end is inserted into the sample introduction container; Left moving means mounted to the left horizontal fixing stand to move the left horizontal moving table to the left and right sides; An exposed groove is formed from the right side so that the inserted second mesh electrode is exposed at the right end, and is fixed to the right end of the left horizontal slide, and the left sample is brought into close contact with the inserted second mesh electrode and the left end of the rock sample. Grips; Electrical resistivity measurement holder comprising a. The method of claim 1, A front upper and lower mount fixed to the front of the sample introduction tube; A front shanghai dongdae mounted on the front upper and lower fixed bases such that a rear end thereof is movable up and down in a state in which the sample inlet is drawn; Vertical movement means mounted on the front upper and lower fixed bands to move the front shanghai dongdae up and down; The groove is formed so that the rock sample is settled on the horizontal axis of the right horizontal slide and the left horizontal slide, and is fixed to the rear end of the front shandong band, and the right end of the rock sample is moved according to the left side movement of the right sample holder. A sample support holder held by the right sample holder and allowing a left end of the rock sample to be held by the left sample holder in accordance with a right movement of the left sample holder; Electrical resistivity measurement holder comprising a. The method of claim 2, The groove formed in the sample support is an electrical resistivity measuring holder, characterized in that the top is open so that the rock sample moves from the top to the bottom. The method of claim 3, It includes an auxiliary sample rest settled in the groove of the sample settle, the rock sample is moved from the top to the bottom and is formed on the horizontal axis of the right horizontal slide and the left horizontal slide is formed an upper groove An electrical resistivity measuring holder. The method of claim 2, Inserting grooves are formed in the right sample holder from the top to insert and insert the first mesh electrode from the top, The resistivity measurement holder of claim 1, wherein an insertion groove is formed from an upper portion of the left sample holder so that the second mesh electrode is inserted into and inserted from the upper portion. The method according to any one of claims 1 to 5, The right horizontal slide is the right end is interpolated in the right horizontal holder and the rack gear is formed along the longitudinal direction on the circumferential surface, The right moving means is a worm wheel that rotates about an axis extending in the vertical direction, a worm gear engaged with the worm wheel, spaced apart from the worm gear and mounted on the central axis of the worm gear to engage with the rack gear. And a pinion gear and rotating means for rotating the worm wheel. The method according to any one of claims 2 to 5, The vertical movement means may include a first bevel gear that rotates about an axis in a front-rear direction, a second bevel gear that meshes with the first bevel gear and rotates about an axis in a vertical direction, and the second bevel gear. An electrical resistivity measuring holder comprising: a male screw formed on a central axis and a female screw fastened to the male screw, and a vertical moving nut on which a front end of the front shandong shaft is fixed. An electrical resistivity measuring device comprising the electrical resistivity measuring holder according to any one of claims 1 to 5.

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