CN203704830U - Simple three-dimensional displacement measuring device of geologic rock fracture in model test - Google Patents

Abstract

A simple device for measuring the three-dimensional displacement of geological cracks in rock mass for model testing, including first and second mounting plates installed on the rock masses on both sides of the geological cracks of the rock mass, and a second mounting plate is installed under the first mounting plate A connecting rod, the hexahedron measuring block is arranged under the first connecting rod, the second connecting rod is arranged under the second mounting plate, the third, fourth and fifth connecting rods are arranged under the second connecting rod, and the third connecting rod The first dial gauge is provided through the sixth connecting rod, the second dial gauge is provided through the seventh connecting rod on the fourth connecting rod, the third dial gauge is provided on the fifth connecting rod, the first, second and Each of the third dial gauges is in contact with one of the three vertical faces of the hexahedron measuring block, and the first, second and third dial gauges are kept perpendicular to their respective contact faces. The device has reasonable design, simple structure, flexible installation and adjustment, and convenient instrument replacement; it solves the long-standing problem that the displacement of geological cracks in rock mass cannot be simultaneously measured in three directions at a single point in model tests.

Description

A simple device for three-dimensional displacement measurement of geological fractures in rock mass for model tests

technical field

The utility model relates to the field of rock mass physical model tests, in particular to a simple device for measuring the three-direction displacement of rock mass geological cracks in the rock mass model test. the

Background technique

Model tests involving rock mass, such as dam engineering model tests, underground powerhouses, tunnels and mine model tests, etc., mainly focus on the movement state of rock mass faults, weak cracks and other unfavorable geological structures, so as to judge the rock mass stability. In the actual model test process, the displacement measurement of unfavorable geological structures such as faults and weak cracks is mostly based on the measurement of single-point displacement in a single direction, and the rock mass geology is comprehensively considered through the observation of multiple single-point displacements in different directions. The movement state at the crack; or a complex displacement sensor is buried inside. In bad geological structures such as faults and weak fissures, its movement state is not in a single direction, and there are multiple displacement modes such as crack opening, horizontal displacement, and vertical displacement. occur. The traditional single-point single-direction displacement measurement method often has poor measurement results and cannot fully reflect the real state of motion at the geological cracks of the rock mass, failing to achieve the true purpose of the test; however, the method of embedding complex displacement sensors inside can be To overcome the shortcomings of traditional measurement, but its measurement process is complicated and cumbersome, and the instrument is expensive. The invention aims at inventing a simple and easy-to-use simple device and measuring method for three-dimensional displacement measurement of rock mass geological cracks in model tests, so as to achieve the test purpose. the

Contents of the invention

The technical problem to be solved by the utility model is to provide a simple device for measuring the three-way displacement of geological cracks in rock mass in model tests. The device can be used to simultaneously measure the three-way displacement of a single point at geological cracks in rock mass.

The technical solution adopted by the utility model: a simple device for measuring the three-way displacement of geological cracks in rock mass for model testing, including a first mounting plate and a second mounting plate for installing on the rock mass on both sides of the geological crack of the rock mass The first mounting plate is provided with a first connecting rod, the first connecting rod is provided with a hexahedron measuring block, the second mounting plate is respectively provided with a second connecting rod, and the second connecting rod is provided with a third connecting rod, The fourth connecting rod and the fifth connecting rod, the third connecting rod is provided with the first dial indicator through the sixth connecting rod, the fourth connecting rod is provided with the second dial indicator through the seventh connecting rod, the fifth connecting rod There is a third dial gauge on the top, the first dial gauge, the second dial gauge and the third dial gauge are respectively in contact with one of the three vertical surfaces of the hexahedron measuring block, and the first dial gauge, the second dial gauge The dial gauge and the third dial gauge are kept perpendicular to their respective contact surfaces.

Between the first mounting plate, the second mounting plate and the rock mass; between the first connecting rod and the first mounting plate and the hexahedron measuring block; between the second connecting rod and the second mounting plate are all fixed by screws.

The plurality of connecting rods and between the connecting rods and the dial indicator are connected through the slots on the connecting rods and fixed with screws.

The hexahedron measuring block is composed of a smooth regular hexahedron glass block.

The technical effect obtained by the utility model: the three dial gauges adopted in the utility model are in contact with one of the three mutually perpendicular surfaces of the hexahedron measuring block respectively, and the three dial gauges are kept perpendicular to their respective contact surfaces. When the hexahedron measuring block is displaced along a certain direction, the reading of the dial gauge in that direction changes, while the dial gauges in the other two directions slide along the smooth glass surface of the hexahedron measuring block without additional displacement. It can ensure the three-dimensional displacement measurement of the same point, which can fully and truly reflect the displacement changes at the geological cracks of the rock mass;

The hexahedron measuring block adopted in the utility model is a smooth regular hexahedron glass block, which can ensure that the dial indicator can slide freely when it is in contact with the measuring block, and ensure that the displacement in the measuring direction is single and does not affect the displacement measurement in other directions;

The utility model has reasonable design, simple device structure, flexible installation and adjustment, convenient operation, convenient instrument replacement, and simple installation and use;

The utility model solves the long-standing problem that the displacement at the geological cracks of the rock mass cannot be measured in three directions at the same time in the model test, and the utility model provides a simple and feasible method for the displacement measurement of the geological cracks of the rock mass in the model test Technical solutions.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the structural representation of the utility model.

Detailed ways

Embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

Referring to Fig. 1, a simple device for three-way displacement measurement of rock mass geological fractures for model testing, including a first mounting plate 1 and a second mounting plate 6 for being installed on rock masses on both sides of rock mass geological cracks, A first connecting rod 2 is arranged under the first mounting plate, a hexahedron measuring block 3 is arranged under the first connecting rod, a second connecting rod 7 is arranged under the second mounting plate, and a third connecting rod is respectively arranged under the second connecting rod 9. The fourth connecting rod 11 and the fifth connecting rod 12, the third connecting rod is provided with the first dial gauge 4 through the sixth connecting rod 8, the fourth connecting rod is provided with the second thousand gauge through the seventh connecting rod 13 sub-meter 5, a third dial gauge 10 is provided on the fifth connecting rod, and the first dial gauge, the second dial gauge and the third dial gauge are respectively in contact with one of the three vertical surfaces of the hexahedron measuring block, And the first dial gauge, the second dial gauge, and the third dial gauge are kept perpendicular to their respective contact surfaces.

Between the first mounting plate, the second mounting plate and the rock mass; between the first connecting rod and the first mounting plate, the hexahedron measuring block; between the second connecting rod and the second mounting plate are all fixed by screws. The plurality of connecting rods and between the connecting rods and the dial indicator are connected through the slots on the connecting rods and fixed with screws. All are high-quality steel materials to ensure their strength and rigidity are stable without deformation. The hexahedron measuring block is composed of a smooth regular hexahedron glass block, and the dial gauge can be a mechanical dial gauge or a digital display dial gauge. All parts of the device are kept parallel to the surface of the rock mass as far as possible, except for two installation plates, the remaining parts are not in contact with the rock mass.

The hexahedron measuring block 3 is a smooth regular hexahedron glass block.

In the utility model, the first dial gauge 4, the second dial gauge 5, and the third dial gauge 10 can adopt digital or mechanical dial gauges.

Utilize the utility model to carry out measuring method, comprise the following steps:

(1) Determine the displacement observation position at the geological crack of the rock mass in the model test;

(2) Fix the first mounting plate 1 and the second mounting plate 6 on the rock mass on both sides of the geological crack of the rock mass respectively;

(3) Install the various parts of the device according to their positions, ensuring that except for the first mounting plate 1 and the second mounting plate 6, the remaining parts are not in contact with the rock mass;

(4) The first dial gauge 4, the second dial gauge 5, and the third dial gauge 10 are respectively in contact with one of the three vertical surfaces of the hexahedron measuring block 3, and the first dial gauge 4, the second dial gauge Table 5, the third dial indicator 10 and its respective contact surfaces are kept vertical;

(5) Adjust and record the initial value of the dial gauge, and prepare for the test;

(6) After the test is completed, wipe the relevant parts clean for the next use.

During the test, when the geological cracks of the rock mass are displaced, assuming that the measuring block is displaced in a certain direction, the readings of the dial gauges on the contact surface will change, while the dial gauges in the other two directions will change. Sliding occurs along the smooth glass surface of the hexahedron measuring block 3 without additional displacement. The utility model can ensure a single displacement in the measurement direction, does not affect the displacement measurement in other directions, and truly realizes the three-direction displacement measurement of geological cracks in the rock mass in the model test. the

Claims (4)

1. one kind measures easy device for model test rock mass geology crack three direction displacement, it is characterized in that: it comprises for being arranged on the first installing plate (1) and the second installing plate (6) on the rock mass of both sides, place, rock mass geology crack, the first installing plate has head rod (2), head rod has hexahedron and measures piece (3), the second installing plate has the second connecting link (7), under the second connecting link, be respectively equipped with the 3rd connecting link (9), the 4th connecting link (11) and the 5th connecting link (12), on the 3rd connecting link, be provided with the first clock gauge (4) by the 6th connecting link (8), on the 4th connecting link, be provided with the second clock gauge (5) by the 7th connecting link (13), the 5th connecting link is provided with the 3rd clock gauge (10), described the first clock gauge, the second clock gauge is measured one side in three vertical planes of piece with hexahedron separately with the 3rd clock gauge and is contacted, and the first clock gauge, the second clock gauge, surface of contact maintenance is vertical separately with it for the 3rd clock gauge.

2. measure easy device for model test rock mass geology crack three direction displacement according to claim 1, it is characterized in that: between described the first installing plate, the second installing plate and rock mass; Head rod and the first installing plate, hexahedron are measured between piece; Between the second connecting link and the second installing plate, be all screwed.

3. according to claim 1 and 2 for model test rock mass geology crack three direction displacement measurement easy device, it is characterized in that: between above-mentioned multiple connecting links and be to be all connected by draw-in groove on connecting rod between connecting link and above-mentioned clock gauge, and be screwed.

4. measure easy device for model test rock mass geology crack three direction displacement according to claim 1, it is characterized in that: it is the regular hexahedron glass blocks of light face that described hexahedron is measured piece (3).