Surrounding rock complex stress measuring device

Abstract

The utility model discloses a surrounding rock complex stress measuring device which comprises a main body, a limiting piece is arranged on one side of the main body, a first conveying pipe is embedded in the main body, a grouting opening communicated with one side of the first conveying pipe is formed in one side of the limiting piece, and the first conveying pipe extends out of the other side of the main body. The utility model relates to the technical field of surrounding rock composites, through the arrangement of the main body and the multiple groups of expansion parts, when in use, the main body and the multiple groups of expansion parts can be combined for use according to the depth of a drill hole, and can be put into the drill hole after being combined, and then the gap between the drill hole and the device can be filled by grouting the grouting port, so that the construction efficiency is improved. And a plurality of groups of stress sensors are additionally arranged on the outer side of the expansion part, so that the overall measurement range of the device can be increased, and the measurement accuracy is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of surrounding rock composite, concretely to surrounding rock composite stress measuring device. BACKGROUND

[0002] Surrounding rock composite is a concept often encountered in the field of engineering geology and geotechnical engineering, which mainly refers to a composite structure formed by combining different properties of rocks, soils or other geological materials through certain means (such as anchoring, shotcrete, etc.).

[0003] During construction, it is necessary to monitor the stress change of rock in real time, so as to provide timely and accurate data support for engineering research, which helps to discover and handle potential safety hazards in time.

[0004] However, most of the existing surrounding rock stress measuring devices are strain gauge type force measuring rods and hydraulic type force measuring rods. The above devices cannot be closely attached to the surrounding rock wall, and the measurement accuracy is not accurate enough, thereby affecting the reliability of measurement. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a surrounding rock composite stress measuring device to improve measurement accuracy and reliability.

[0006] To achieve the above purpose, the utility model is implemented by the following technical scheme: a surrounding rock composite stress measuring device, comprising a main body, a limiting sheet is arranged on one side of the main body, a first conveying pipe is embedded in the inside of the main body, a grouting port is arranged on one side of the limiting sheet and communicates with one side of the first conveying pipe, the first conveying pipe extends out from the other side of the main body;

[0007] An expansion part is arranged on the other side of the main body, a plug-in port is arranged on one side of the expansion part, a second conveying pipe is embedded in the inside of the expansion part, one side of the second conveying pipe is connected with the plug-in port, and the other side of the second conveying pipe extends out from the other side of the expansion part, the expansion part and the main body are connected through a connecting assembly, a limiting part is sleeved at the connecting position of the main body and the limiting sheet, an oil supply port is arranged on one side of the limiting part, waterproof membranes are arranged on the outer sides of the expansion part and the main body, and a ring of stress sensors is arranged on the outer side of the expansion part.

[0008] Preferably, the connecting assembly comprises a plug block arranged on the other side of the main body, an elastic block is arranged on the upper side of the plug block, and a plug hole corresponding to the plug block is arranged on one side of the expansion part.

[0009] Further, a control valve is arranged at the oil supply port.

[0010] Further, wire arranging grooves are arranged in the inside of the main body and the expansion part, and a data collector is arranged on one side of the limiting sheet.

[0011] Further, the grouting port is provided with a sealing port.

[0012] Further, the first conveying pipe and the second conveying pipe are provided with sealing rings at the positions where they extend from the main body and the extension part respectively.

[0013] The utility model discloses beneficial effects:

[0014] 1. By setting up the main body and multiple extension parts, the main body and multiple extension parts can be combined for use according to the depth of the drill hole in use, and can be placed into the drill hole after combination, and then the gap between the drill hole and the device can be filled by grouting into the grouting port, thereby increasing the determination effect.

[0015] 2. By increasing multiple stress sensors on the outside of the extension part, the overall determination range of the device can be increased, and the determination accuracy can be ensured. DRAWINGS

[0016] Fig. 1 It is the main view structure schematic diagram of the utility model.

[0017] Fig. 2 It is the extension part side view structure schematic diagram of the utility model.

[0018] In the drawing: 1, main body, 2, limiting sheet, 3, first conveying pipe, 4, grouting port, 5, extension part, 6, plug-in interface, 7, second conveying pipe, 8, limiting part, 9, oil supply port, 10, waterproof membrane, 11, stress sensor, 12, plug-in block, 13, elastic block, 14, plug-in hole, 15, control valve, 16, wire discharge groove, 17, data collector, 18, sealing port, 19, sealing ring. DETAILED DESCRIPTION

[0019] Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the scope of protection of the utility model.

[0020] As Figs. 1-2 shown, a stress determination device for surrounding rock composite body includes a main body 1, the main body 1 is provided with a limiting sheet 2 on one side, the first conveying pipe 3 is embedded in the main body 1, the grouting port 4 is provided with the first conveying pipe 3 on one side in the limiting sheet 2, and the first conveying pipe 3 extends from the other side of the main body 1.

[0021] The main body 1 is provided with an extension part 5 on the other side, the extension part 5 is provided with a plug-in interface 6 on one side, the second conveying pipe 7 is embedded in the extension part 5, the second conveying pipe 7 is connected with the plug-in interface 6 on one side, and extends from the other side of the extension part 5.

[0022] The expansion part 5 is connected with the main body 1 through the connecting assembly, the main body 1 is sleeved with the limiting part 8 at the connecting position of the limiting sheet 2, one side of the limiting part 8 is communicated with the oil supply port 9, the expansion part 5 and the outer side of the main body 1 are provided with the waterproof film 10, and the outer side of the expansion part 5 is provided with a circle of stress sensors 11.

[0023] The connecting assembly comprises an insertion block 12 arranged on the other side of the main body 1, the upper side of the insertion block 12 is provided with an elastic block 13, and one side of the expansion part 5 is provided with an insertion hole 14 corresponding to the insertion block 12.

[0024] Before the stress measurement of the surrounding rock composite, first, the operator drills a hole on the surrounding rock composite by using the drilling device, then the operator prepares a corresponding number of expansion parts 5 according to the depth of the hole, and before the device is placed into the hole, the main body 1 and the plurality of expansion parts 5 are quickly connected by using the insertion block 12, the elastic block 13 and the insertion hole 14, and the stress sensors 11 on the outer sides of the plurality of expansion parts 5 are connected in series through the wire slot 16, so that the stress sensors 11 on the outer sides of the plurality of expansion parts 5 are electrically connected with the data collector 17 on one side of the limiting sheet 2, and the stress data can be collected.

[0025] Then the operator can place the assembled device into the hole, after the main body 1 and the expansion part 5 are assembled, the first conveying pipe 3 in the main body 1 and the second conveying pipe 7 in the plurality of expansion parts 5 are kept in communication, at this time, the operator pours hydraulic oil into the limiting part 8 through the oil supply port 9, so that the limiting part 8 is expanded, and the position of the main body 1 is fixed, then the grouting operation can be performed in the hole through the cooperation of the grouting port 4, the first conveying pipe 3 and the second conveying pipe 7, so as to fill the gap between the hole and the device, so that the stress sensors 11 are tightly attached to the inner wall of the hole, the stress measurement effect is guaranteed, and the wire slot 16 exposed by the last expansion part 5 is blocked.

[0026] The lower side of the limiting part 8 is provided with an exhaust pipe, which exhausts the gas in the hole during the grouting process, so as to guarantee the grouting quality, the outer sides of the expansion part 5 and the main body 1 are provided with the waterproof film 10, which reduces the corrosion of water in the surrounding rock composite to the expansion part 5 and the main body 1, and increases the service life of the device, and during the stress measurement of the surrounding rock composite, the measurement data can be viewed through the data collector 17.

[0027] The control valve 15 is arranged at the oil supply port 9, which is used for controlling the on-off of the oil supply port 9.

[0028] The sealing port 18 is arranged on one side of the grouting port 4, which can block the grouting port 4 after the grouting is completed.

[0029] The sealing ring 19 is arranged at the extension position of the first conveying pipe 3 from the main body 1 and the extension position of the second conveying pipe 7 from the extension part 5, so as to increase the sealing performance of the connection between the first conveying pipe 3 and the second conveying pipe 7, and prevent the leakage during the grouting process.

[0030] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for measuring stresses in a surrounding rock complex, comprising a main body (1), characterized in that The main body (1) is provided with a limiting sheet (2) on one side, the first conveying pipe (3) is embedded in the main body (1), the limiting sheet (2) is provided with a grouting port (4) on one side, which is communicated with one side of the first conveying pipe (3), and the first conveying pipe (3) extends from the other side of the main body (1); The other side of the main body (1) is provided with an expansion part (5), the expansion part (5) is provided with a plug-in port (6) on one side, the second conveying pipe (7) is embedded in the expansion part (5), one side of the second conveying pipe (7) is connected with the plug-in port (6), and the other side of the second conveying pipe (7) extends from the other side of the expansion part (5), the expansion part (5) and the main body (1) are connected through a connecting assembly, the limiting part (8) is arranged on the connecting position between the main body (1) and the limiting sheet (2), the oil supply port (9) is communicated with one side of the limiting part (8), the expansion part (5) and the main body (1) are provided with waterproof membranes (10) on the outer sides, and a circle of stress sensors (11) are arranged on the outer side of the expansion part (5).

2. The stress measurement apparatus for a surrounding rock complex according to claim 1, characterized in that, The connecting assembly comprises a plug block (12) arranged on the other side of the main body (1), the plug block (12) is provided with an elastic block (13) on the upper side, and the expansion part (5) is provided with a plug hole (14) corresponding to the plug block (12) on one side.

3. The stress measurement apparatus for a surrounding rock complex according to claim 1, characterized by The oil supply port (9) is provided with a control valve (15).

4. The stress measurement apparatus for surrounding rock complex according to claim 1, characterized by, The main body (1) and the expansion part (5) are provided with wire discharge grooves (16) in the interiors, and the limiting sheet (2) is provided with a data collector (17) on one side.

5. The stress measurement apparatus for surrounding rock complex according to claim 1, characterized by, The grouting port (4) is provided with a sealing port (18) on one side.

6. The stress measurement apparatus for surrounding rock complex according to claim 1, characterized by The first conveying pipe (3) is provided with a sealing ring (19) at the extending position of the first conveying pipe (3) from the main body (1), and the second conveying pipe (7) is provided with a sealing ring (19) at the extending position of the second conveying pipe (7) from the expansion part (5).

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