Self-adaptive roadway foundation grouting system

Abstract

The utility model relates to the field of geological engineering, in particular to a self-adaptive roadway foundation grouting system. The utility model provides a self-adaptive roadway foundation grouting system, which integrates key components such as a storage tank, a stirrer, a delivery pump, a grouting tank, a grouting pump and a grouting pipe, and realizes full-course automatic control through a controller. Materials are pre-stored in the material storage tank and are conveyed to the grouting tank to be stored through the conveying pump after being mixed through the stirring machine. The grouting pump injects grouting liquid into a foundation grouting hole through the grouting pipe according to an instruction of the controller, and meanwhile the layered settlement meter installed on the foundation monitors the settlement amount in real time and feeds back the settlement amount to the controller so as to adjust the flow speed of the grouting liquid, and self-adaptive grouting reinforcement is achieved. All devices of the system are connected through rubber pipes, flexible arrangement and operation under a mine are facilitated, and the grouting reinforcement precision and efficiency are effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of geological engineering, in particular to an adaptive tunnel foundation grouting system. Background Art

[0002] Coal mine construction faces two major challenges. First, tunnels are severely deformed by mining, often accompanied by problems such as spalling, roof falls, and floor heave. This not only reduces the ventilation area but also increases the difficulty of tunnel repair. Traditional repair methods, such as expansion and reinforcement support, are not only labor-intensive and carry high safety risks, but also lack long-term effectiveness. When fully-mechanized mining faces pass through structural and fractured zones, spalling and roof falls are highly likely to occur due to the soft coal walls and fractured roof. Roof falls can reach heights of 2-7 meters and depths of 1.5-5 meters, posing significant safety risks and operational difficulties for subsequent manual roof repair. Each subsequent roof fall severely impacts normal production, resulting in delays ranging from 3-7 days. To effectively address these challenges, tunnel foundation grouting technology has been introduced in coal mine construction. This technology injects a specific grouting material into the tunnel foundation to reinforce the foundation, improve the stability and bearing capacity of the tunnel, and effectively reduce the occurrence of spalling, roof falls, and floor heave. At the same time, grouting can also improve the ventilation conditions of the tunnel, providing strong guarantees for safe production in coal mines.

[0003] The traditional grouting process is particularly inadequate. First of all, the operating procedures of the traditional grouting process are cumbersome, which not only increases the construction difficulty and labor costs, but also prolongs the construction period. More importantly, due to the limitations of equipment design, the traditional grouting process is often unable to accurately control the grouting flow rate. This defect directly affects the effect of grouting reinforcement and the stability of the foundation. Precise control of the grouting flow rate is crucial for grouting reinforcement. An appropriate grouting flow rate can ensure that the slurry evenly and fully fills the gaps in the foundation, forming an effective reinforcement layer and improving the bearing capacity and stability of the foundation. However, the equipment for the transmission grouting process is often bulky and not suitable for operation in the narrow space under the mine, and its grouting flow rate control is not accurate enough, resulting in the grouting effect being difficult to achieve the expected. Summary of the Invention

[0004] This utility model provides an adaptive tunnel foundation grouting system, which aims to solve the problem that the traditional grouting process is complicated, the flow rate control is imprecise, and the equipment is bulky, which is not suitable for underground mine operations and seriously affects the grouting reinforcement effect and foundation stability. The utility model provides the following solutions:

[0005] An adaptive tunnel foundation grouting system includes a controller, characterized in that it includes a storage tank (1), the storage tank (1) is connected to a mixer (2), the mixer (2) is connected to a delivery pump (3), the delivery pump (3) is connected to a grouting tank (4), the grouting tank (4) is connected to a grouting pump (5), the grouting pump (5) is connected to a grouting pipe (6), the grouting pipe (6) is connected to a grouting hole of a foundation, and a stratified settlement meter (7) is installed on the foundation.

[0006] The adaptive tunnel foundation grouting system is characterized in that the connecting pipes between the various devices are rubber hoses.

[0007] The adaptive tunnel foundation grouting system is characterized in that the material storage tank (1) stores material, the material storage tank (1) is provided with an electromagnetic valve, and the electromagnetic valve is controlled by a controller; when the controller sends a start signal to the material storage tank (1), the material flows into the mixer (2).

[0008] The adaptive tunnel foundation grouting system is characterized in that the mixer (2) is controlled by an electrical signal from a controller; when materials flow into the mixer (2), the mixer (2) adds water to mix the materials into grouting liquid and sends it to the delivery pump (3).

[0009] The adaptive tunnel foundation grouting system is characterized in that the delivery pump (3) is controlled by an electrical signal from a controller; when the electrical signal sends a start command to the delivery pump (3), the delivery pump (3) delivers the grouting liquid to a grouting tank (4) for storage.

[0010] The adaptive tunnel foundation grouting system is characterized in that the layered settlement meter (7) is controlled by an electrical signal from a controller, and the layered settlement meter (7) measures the foundation settlement and sends the signal to the controller.

[0011] The adaptive tunnel foundation grouting system is characterized in that the grouting pump (5) is controlled by a controller electrical signal, inputs the grouting liquid in the grouting tank (4) into the grouting pipe (6) and is installed with a controller command to control the grouting liquid flow rate.

[0012] The beneficial effects of the utility model are:

[0013] 1. The utility model realizes full automatic control through the controller. From feeding of the storage tank, mixing of the mixer, delivery of the delivery pump, grouting of the grouting pump, and adjustment of the grouting flow rate, all can be completed automatically under the instruction of the controller, which greatly reduces manual operation and improves construction efficiency.

[0014] 2. This utility model is equipped with a layered settlement meter that can monitor the settlement of the foundation in real time and feed the data back to the controller. The controller adjusts the flow rate of the grouting liquid based on the settlement data to ensure that the grouting liquid can evenly and accurately fill the gaps in the foundation, improving the accuracy and effectiveness of the grouting reinforcement.

[0015] 3. This utility model is applicable to various types of foundations, including soft foundations, settlement foundations, loose foundations, etc. By adjusting the ratio of the grouting liquid and the grouting parameters, it can adapt to different geological conditions and engineering requirements and achieve effective foundation reinforcement.

[0016] 4. The utility model realizes automatic control, and the equipment is closely connected and coordinated, so the construction speed is fast and the efficiency is high. At the same time, the system also has the ability to operate continuously, which can greatly shorten the construction period.

[0017] 5. The utility model reduces the risk of manual operation and improves construction safety through automatic control and precise grouting.

[0018] 6. The utility model avoids the waste of grouting liquid and achieves energy saving and consumption reduction by accurately controlling the grouting amount and flow rate.

[0019] 7. The utility model realizes automatic control and precise grouting, reduces the possibility of manual intervention and erroneous operation, and thus reduces the maintenance cost and failure rate of the equipment. In addition, the stability and reliability of the system are also high, and it can operate stably for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the utility model.

[0021] In the figure: 1. Storage tank; 2. Mixer; 3. Delivery pump; 4. Grouting tank; 5. Grouting pump; 6. Grouting pipe; 7. Stratified sedimentation instrument. DETAILED DESCRIPTION

[0022] An adaptive tunnel foundation grouting system includes a controller and is characterized by comprising a storage tank 1, the storage tank 1 being connected to a mixer 2, the mixer 2 being connected to a delivery pump 3, the delivery pump 3 being connected to a grouting tank 4, the grouting tank 4 being connected to a grouting pump 5, the grouting pump 5 being connected to a grouting pipe 6, the grouting pipe 6 being connected to a grouting hole in the foundation, and a stratified settlement meter 7 being installed on the foundation. The connecting pipes between the various devices are hoses.

[0023] The storage tank 1 stores cement mortar additives and 425 silicate cement. The storage tank 1 is provided with an electromagnetic valve, which is controlled by a controller. When the controller sends a start signal to the storage tank 1, the cement mortar additive flows into the mixer 2.

[0024] Mixer 2 is controlled by electrical signals from the controller. When cement mortar additives and 425 Portland cement flow into mixer 2, mixer 2 adds water to mix the cement mortar additives and 425 Portland cement into a grouting liquid, which is then fed into delivery pump 3. Delivery pump 3 is also controlled by electrical signals from the controller. When the electrical signal sends a start command to delivery pump 3, delivery pump 3 delivers the grouting liquid to grouting tank 4 for storage.

[0025] The stratified settlement meter 7 is controlled by the controller electrical signal, and the stratified settlement meter 7 measures the foundation settlement and sends it to the controller. The grouting pump 5 is controlled by the controller electrical signal, and the grouting liquid in the grouting tank 4 is input into the grouting pipe 6 and the controller command is installed to control the grouting liquid flow rate.

[0026] During specific use, the storage tank 1, the mixer 2 and the delivery pump 3 are placed outside the mine, and the grouting tank 5 and the grouting pump are placed inside the underground mine.

Claims

1. An adaptive tunnel foundation grouting system, comprising a controller, characterized in that: The invention comprises a storage tank (1), wherein the storage tank (1) is connected to a mixer (2), the mixer (2) is connected to a delivery pump (3), the delivery pump (3) is connected to a grouting tank (4), the grouting tank (4) is connected to a grouting pump (5), the grouting pump (5) is connected to a grouting pipe (6), the grouting pipe (6) is connected to a grouting hole of a foundation, and a stratified settlement meter (7) is installed on the foundation.

2. The adaptive tunnel foundation grouting system according to claim 1, characterized in that: The material storage tank (1) stores material. The material storage tank (1) is provided with an electromagnetic valve, and the electromagnetic valve is controlled by a controller. When the controller sends a start signal to the material storage tank (1), the material flows into the mixer (2).

3. The adaptive tunnel foundation grouting system according to claim 1, characterized in that: The mixer (2) is controlled by an electrical signal from a controller; when the material flows into the mixer (2), the mixer (2) adds water to mix the material into a grouting liquid and sends it to the delivery pump (3).

4. The adaptive tunnel foundation grouting system according to claim 3, characterized in that: The delivery pump (3) is controlled by an electrical signal from a controller; when the electrical signal sends a start command to the delivery pump (3), the delivery pump (3) delivers the grouting liquid to the grouting tank (4) for storage.

5. The adaptive tunnel foundation grouting system according to claim 1, characterized in that: The layered settlement meter (7) is controlled by an electrical signal from a controller, and the layered settlement meter (7) measures the amount of foundation settlement and sends the measurement to the controller.

6. The adaptive tunnel foundation grouting system according to claim 4, characterized in that: The grouting pump (5) is controlled by an electrical signal from a controller, and inputs the grouting liquid in the grouting tank (4) into the grouting pipe (6). The controller command is installed to control the flow rate of the grouting liquid.

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