Full-length anchoring grouting and monitoring device

Abstract

The utility model discloses a full-length anchoring grouting and monitoring device which comprises a base plate, a stop-grouting plug, an anchor rod body, an optical fiber fixing device, an anchor head, an optical fiber, a fastening nut, a metal grouting pipe, a grout outlet, a roadway, surrounding rock and an anchoring agent. When grouting is conducted through the metal grouting pipe, grouting can be conducted while the metal grouting pipe is withdrawn and drawn out, it is guaranteed that grouting is more sufficient, meanwhile, the optical fiber is fixed to the surface of the anchor rod body through the optical fiber fixing device, monitoring of the grouting degree and follow-up surrounding rock stress monitoring are facilitated, monitoring and anchoring of the device can be integrated, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mine support technical field, concretely relates to a full length anchoring grouting and monitoring device. BACKGROUND

[0002] With the continuous improvement of coal mining technology in China, the coal mining industry in China gets better and faster development, but with the continuous deepening of coal mining depth, the mine pressure of coal mine appears more obviously, and the disaster becomes more and more serious. Anchor rod is one of the common support forms in coal mine, although it has the advantages of rapid installation, timely bearing and the like, but it also has many problems, in recent years, full length anchor injection technology gradually develops in coal mine, tunnel and the like and gets wide application, engineering effect is remarkable, especially for soft and broken surrounding rock, it plays a great role. At present, the anchoring and monitoring of coal mine roadway are mainly anchored by anchor rod, and the surrounding rock is monitored by optical fiber, and the anchoring and monitoring are carried out respectively, and anchor rod and optical fiber need to be additionally punched and installed, which is time-consuming and laborious. UTILITARIAN CONTENT

[0003] The utility model aims at providing a full length anchoring grouting and monitoring device to solve the problems in the above background technology.

[0004] To achieve the above object, the utility model provides the following technical scheme: a full length anchoring grouting and monitoring device, comprising:

[0005] Anchor rod body, one end of the anchor rod body is fixedly installed with an anchor head, the other end of the anchor rod body is provided with a grout stopper, and a mounting hole is formed in the grout stopper;

[0006] Metal grouting pipe, the metal grouting pipe is arranged in the mounting hole, and the metal grouting pipe is used for grouting in the roadway section hole;

[0007] Optical fiber fixing device, the optical fiber fixing device is sleeved on the anchor rod body, and the optical fiber fixing device is used for fixing the optical fiber.

[0008] Preferably, a plurality of grout outlets are formed in the metal grouting pipe.

[0009] Preferably, a plurality of balls are uniformly arranged on the inner wall of the mounting hole, and the balls are rotatably connected with the inner wall of the mounting hole.

[0010] Preferably, the optical fiber fixing device is annular, and the optical fiber fixing device is arranged at one end of the anchor rod body close to the anchor head.

[0011] Preferably, one end of the optical fiber is fixedly connected with the optical fiber fixing device.

[0012] Preferably, the anchor rod body is further provided with a washer and a fastening nut in sequence near one end of the plug, the washer is sleeved on the anchor rod body, and the fastening nut is threadedly connected with the anchor rod body.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] When grouting through the metal grouting pipe, the metal grouting pipe can be withdrawn while grouting, grouting is more sufficient, the optical fiber fixing device is used for fixing the optical fiber on the surface of the anchor rod body, the grouting degree and subsequent surrounding rock stress monitoring are convenient, the monitoring and anchoring of the device can be integrated, and the working efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a schematic diagram of the utility model installed in cooperation with a roadway;

[0016] Fig. 2 It is a schematic diagram of the anchor rod body of the utility model;

[0017] Fig. 3 It is a schematic diagram of the utility model;

[0018] In the drawing: 1, washer; 2, plug; 3, anchor rod body; 4, optical fiber fixing device; 5, anchor head; 6, optical fiber; 7, fastening nut; 8, metal grouting pipe; 9, grouting hole; 10, roadway; 11, surrounding rock; 12, anchoring agent. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0020] Please refer to Figs. 1-3 The utility model provides a kind of technical solutions: a full-length anchoring grouting and monitoring device, comprising:

[0021] Anchor rod body 3, one end of the anchor rod body 3 is fixedly installed with anchor head 5, the other end of the anchor rod body 3 is provided with plug 2, and mounting hole is formed in plug 2;

[0022] Metal grouting pipe 8, the metal grouting pipe 8 is threaded out of the mounting hole, and the metal grouting pipe 8 is used for grouting to the roadway section hole;

[0023] Optical fiber fixing device 4, the optical fiber fixing device 4 is sleeved on anchor rod body 3, and the optical fiber fixing device 4 is used for fixing optical fiber 6.

[0024] Since the metal grouting pipe 8 has an installation hole, when grouting is performed through the metal grouting pipe 8, the metal grouting pipe 8 can be pulled out while grouting, ensuring more thorough grouting. At the same time, the optical fiber fixing device 4 fixes the optical fiber 6 on the surface of the anchor body 3, which facilitates the monitoring of the grouting degree and subsequent monitoring of the surrounding rock stress, thereby enabling the monitoring and anchoring of the device to be integrated.

[0025] In this embodiment, the metal grouting pipe 8 is provided with multiple grout outlet holes 9.

[0026] The metal grouting pipe 8 has multiple grout outlet holes 9, which can prevent individual grout outlet holes 9 from being blocked during installation; it can also accelerate the flow of grout during grouting and shorten the grouting time.

[0027] In this embodiment, a plurality of balls are evenly arranged on the inner wall of the mounting hole, and the balls are rotatably connected to the inner wall of the mounting hole.

[0028] The rotating ball bearings facilitate the removal and installation of the metal grouting pipe 8 through the mounting hole.

[0029] In this embodiment, the optical fiber fixing device 4 is ring-shaped and is located at one end of the anchor body 3 near the anchor head 5.

[0030] In this embodiment, one end of the optical fiber 6 is fixedly connected to the optical fiber fixing device 4.

[0031] Installing optical fibers on the surface of the anchor bolt facilitates monitoring of the grouting level and subsequent monitoring of surrounding rock stress.

[0032] In this embodiment, a pad 1 and a fastening nut 7 are sequentially provided at one end of the anchor rod body 3 near the grout stop plug 2. The pad 1 is sleeved on the anchor rod body 3, and the fastening nut 7 is threadedly connected to the anchor rod body 3.

[0033] The installation of the pad 1 and the fastening nut 7 facilitates the fixing of the anchor body 3 to the borehole in the roadway section.

[0034] Working principle and usage process of this utility model:

[0035] Step 1: Determine the location, depth, and diameter of boreholes in the tunnel cross-section according to the design requirements;

[0036] Step 2: Fix the optical fiber 6 to the anchor body 3 using the optical fiber fixing device 4, and drill holes using a drilling machine;

[0037] Step 3: Clean the borehole, put the anchoring agent 13 into the borehole, use the assembled anchor rod to push the anchoring agent into the bottom of the borehole, and completely insert the grout stop plug 2 into the borehole. The metal grouting pipe 8 enters the bottom of the borehole through the grout stop plug 2.

[0038] Step four: start grouting, slurry flows into the metal grouting pipe 8 and flows out from the grouting hole 9, the optical fiber monitoring 6 is used to monitor whether the grouting is sufficient, after the grouting is sufficient, the metal grouting pipe 8 is withdrawn a part to continue grouting, and the cycle is repeated until the metal grouting pipe 8 is completely withdrawn from the borehole, and the slurry is prevented from flowing out from the hole due to the action of the grouting stopper 2, and the grouting is finished;

[0039] Step five: the full-length anchoring grouting and monitoring device is fixed by using the backing plate 1 and the fastening nut 7;

[0040] Step six: the subsequent surrounding rock stress change is monitored by using the optical fiber.

[0041] Although the embodiments of the utility model have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A full length anchor grouting and monitoring device, characterized in that, Include: The anchor rod body (3), one end of the anchor rod body (3) is fixedly installed with anchor head (5), the other end of the anchor rod body (3) is provided with stop plug (2), the installation hole is opened on the stop plug (2); Metal grouting pipe (8), the metal grouting pipe (8) is worn and is set out installation hole, the metal grouting pipe (8) is used for grouting to roadway section drilling; Optical fiber fixing device (4), the optical fiber fixing device (4) is sleeved on the anchor rod body (3), and the optical fiber fixing device (4) is used for fixing optical fiber (6).

2. The full-length anchor grouting and monitoring device of claim 1, wherein: The metal grouting pipe (8) is opened with a plurality of grout holes (9).

3. The full-length anchor grouting and monitoring device of claim 1, wherein: The inner wall of the installation hole is uniformly provided with a plurality of balls, and the balls are rotatably connected with the inner wall of the installation hole.

4. The full-length anchor grouting and monitoring device of claim 1, wherein: The optical fiber fixing device (4) is annular, and the optical fiber fixing device (4) is arranged at one end of the anchor rod body (3) close to the anchor head (5).

5. The full-length anchor grouting and monitoring device of claim 1, wherein: One end of the optical fiber (6) is clamped and fixed with the optical fiber fixing device (4).

6. The full-length anchor grouting and monitoring device of claim 1, wherein: The anchor rod body (3) close to the stop plug (2) one end is further provided with a gasket (1) and a fastening nut (7) in sequence, the gasket (1) is sleeved on the anchor rod body (3), and the fastening nut (7) and the anchor rod body (3) are threadedly connected.

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