WO2019085424A1

WO2019085424A1 - Smart grouting system and grouting method for geologically complex regions

Info

Publication number: WO2019085424A1
Application number: PCT/CN2018/085303
Authority: WO
Inventors: 陆银龙; 王凯; 王连国; 孟星宇
Original assignee: 中国矿业大学
Priority date: 2017-10-30
Filing date: 2018-05-02
Publication date: 2019-05-09
Also published as: AU2018360897B2; CN107956483B; AU2018360897A1; CN107956483A

Abstract

A smart grouting method for geologically complex regions, in which the coefficient of permeability of grouting holes in a region is obtained from water permeability tests, an optimal grout concentration for each grouting hole is determined, and sensors (8, 9, 11, 12) and control valves (C, D, E) are installed on every pipeline for real-time control in order to achieve a smart grouting effect. Concentrated grout and dilute grout are mixed at different flow rates to formulate the optimum grout concentration for each grouting hole. A corresponding final grouting pressure is proposed such that when the grouting pressure of a particular grouting hole in the middle of the region suddenly rises, the area designed for that grouting hole is deemed to be full of grout, and grouting of this hole is ended. Grouting of the region is complete when all grouting roles in a target region reach this final grouting pressure. The method enables smart grouting under complex geological conditions and features a high level of automation. It is possible to speed up grouting in workings without compromising work efficiency and quality. Further provided is a smart grouting system for geologically complex regions.

Description

Intelligent grouting system and grouting method in complex geological area

Technical field

The invention relates to the field of roadway support, in particular to a smart grouting system and a grouting method in a complex geological area.

Background technique

Grouting technology is a kind of engineering technology with strong practicability and wide application range. It has also been widely used in the field of coal mine roadway support. It can fill the surrounding rock fissure by grouting and cement the broken rock body into a whole and improve it. The bearing capacity of the surrounding rock has a significant effect on the deformation control of the surrounding rock of the roadway fissure.

The existing downhole grouting technology has the following problems:

1. Grouting still uses low-flow grouting pump for single-hole construction. The construction speed is slow and the efficiency is low. There are great restrictions on quick tunneling and support. Although porous grouting methods have appeared in recent years, such as the porous parallel grouting method and apparatus for roadway weak surrounding rock reinforcement disclosed in Chinese Patent No. CN101749030A, the grouting pipe is divided into a plurality of grouting pipes by a diverting device, and simultaneously Grouting. However, this method can only be used for grouting under the same geological conditions, and the complex geological conditions cannot be realized. It is impossible to intelligently adjust the main grouting parameters of each pipeline in combination with the geological conditions of each hole, and monitor and feedback information in real time, lacking wisdom control. Research.

2. The existing grouting control is still mostly manual control, and there are many hidden dangers. If the grouting process cannot be controlled in time, it is easy to cause waste of resources or the grouting effect can not meet the expected design requirements. And when multiple grouting pipes are involved in simultaneous grouting, when only relying on manpower to control each grouting pipe, not only more human resources are needed, but also the on-site management is confused, so a smart control system is needed for unification. control.

3. There is a lack of strict standards and supervision in the grouting process. The final pressure at the end of grouting is uncertain. The construction relies only on the workers to determine by experience. The error is large and cannot be effectively controlled. It is extremely easy to fail due to mistakes. The grouting effect is performed, so rework is performed.

At present, coal mine grouting, especially for grouting in geological conditions, requires a regional intelligent grouting method, which can automatically distinguish different geological conditions, automatically adjust the basic parameters such as slurry concentration according to geological conditions, and monitor feedback information in real time. Wisdom controls the final pressure of grouting to achieve the purpose of intelligent grouting in complex geological areas.

Summary of the invention

In order to solve the problem of traditional grouting, the invention proposes a smart grouting system and a grouting method in a complex geological region, which can not only realize the simultaneous grouting in the complex geological region, but also realize the intelligent control grouting in the complex geological region.

The technical solution is a smart grouting system in a complex geological area, including a thick slurry storage tank, a slurry storage tank, a grouting pump, a smart control system, and a plurality of grouting branches corresponding to the number of drill holes; The thick slurry storage tank is connected to the main grouting pipeline of the thick slurry, the slurry storage tank is connected to the main grouting pipeline of the slurry, and the grouting pump is arranged on each main grouting pipeline; each grouting branch includes a mixing and agitating tank, And a thick slurry grouting branch pipe, a slurry grouting branch pipe and a mixed grouting pipe respectively connected with the mixing stirrer; the thick grouting branch pipe and the slurry grouting branch pipe are connected to the thick grout main grouting pipe through an electronic three-way valve a slurry grouting pipe is disposed, and a flow sensor and a flow regulating valve are respectively disposed on the thick grouting branch pipe and the slurry grouting branch pipe; the mixed grouting pipe is connected with the grouting hole, and the pipeline is provided with a pressure sensor, Flow sensor and pressure regulating valve; the flow sensor, flow regulating valve, pressure sensor and pressure regulating valve are all connected with the intelligent control system.

The thick slurry grouting pump or the slurry grouting pump is connected to the water tank.

The thick slurry grouting pump and the slurry grouting pump, because of the splitting action, select a large flow high pressure grouting pump to ensure that after the main pipeline is diverted, each branch pipeline can still have sufficient grouting pressure to ensure grouting. quality.

The mixing tank is provided with a density sensor, and the mixed slurry concentration is transmitted to the intelligent control system in real time, and the real-time monitoring is performed to ensure that the dispensed slurry concentration meets the requirements.

The intelligent control system is composed of a water permeability detecting module, a slurry proportioning module, a grouting control module and a computer; the water permeability detecting module, the slurry proportioning module and the grouting control module receive the information fed back by the data collecting device, and The computer performs storage and analysis, and controls the valves on each pipeline; the water permeability monitoring module collects information through the grouting branch pipe installed on each grouting branch, the pressure sensor on the slurry grouting branch pipe, and the flow sensor. And store it in the computer for related calculation and analysis; the slurry proportioning module analyzes the information collected by the flow sensor on the thick slurry grouting branch pipe and the slurry grouting branch pipe, and then controls the thick slurry grouting branch pipe and the thinning The opening of the flow regulating valve on the slurry grouting branch allows the slurry to be mixed in the mixing tank according to the designed flow ratio to obtain the desired slurry concentration; the grouting control module is mixed grouted through the pipes installed in each grouting branch The pressure sensor on the tube and the flow sensor collect information, and pay attention to the grouting state of each grouting hole in real time. Force adjusting valve corresponding control, when reaching the end of the standard, an electronic three-way valve to close the branch grouting.

The invention provides a smart grouting method for complex geological regions, including porous water permeability detection in a complex geological region, intelligent adjustment of grouting parameters, monitoring and feedback real-time information, and real-time control of the intelligent control system, and the specific steps include:

Step 1) Select a section of the target grouting roadway for support, and determine the position and size of the grouting hole according to the design requirements;

Step 2) The porous in the region is simultaneously subjected to water permeability detection, and the permeability coefficient of each grouting hole is obtained by calculating the data according to the data obtained by the sensor;

Step 3) determining the optimal slurry concentration of each grouting hole based on the permeability coefficient of each grouting hole in the area, and intelligently adjusting the grouting parameter;

Step 4) monitoring the grouting of each branch pipe by the sensors on the pipelines of the grouting branches, and feeding back the collected information to the intelligent control system;

Step 5) The intelligent control system controls the grouting of each grouting branch in real time according to the feedback information, and ends the grouting when the final pressure at the end of grouting is reached.

The water permeability detection is performed by a grouting pump connected to the water tank to simultaneously pressurize the porous in the complex geological region, and the pressure sensor and the flow sensor on the mixed grouting pipe of the grouting branch pipe obtain the water injection pressure and the flow rate, and are calculated by the relevant formula. Obtain the permeability coefficient of each grouting hole.

The intelligently adjusting the grouting parameter, determining the optimal slurry concentration of each grouting hole based on the permeability coefficient of each grouting hole, and adjusting the flow rate on the grouting branch pipe and the slurry grouting branch pipe of each grouting branch The regulating valve adjusts the flow rate of the thick slurry in proportion, and mixes in the mixing tank to obtain different slurry concentrations, so as to achieve the effect of obtaining the optimum slurry concentration of each grouting hole.

The monitoring and real-time feedback information, the sensors on each grouting branch, the pressure and flow information on the corresponding pipeline are fed back to the intelligent control system in real time, and the flow rate in the branch pipe is fed back in real time, so that the intelligent control system controls the slurry concentration.

The grouting method is: storing two concentrations of cement slurry in a thick slurry storage tank and a slurry storage tank; the grouting pump inputs the slurry from the slurry tank into the mixing tank; the intelligent control system separately controls each The opening of the grouting branch pipe of the grouting branch corresponding to the grouting hole and the electronic three-way valve on the slurry grouting branch pipe, thereby controlling the concentration of the slurry entering the mixing agitating tank; when mixing the slurry in the mixing tank When the concentration satisfies the optimum slurry concentration of the corresponding grouting hole, the intelligent control system controls the mixing agitator to input the slurry into the grouting hole, and at the same time controls the grouting pressure by controlling the pressure regulating valve on the mixing grouting pipe; When the single grouting hole reaches the final pressure at the end of grouting, the grouting is finished until all the grouting holes in the grouting area are completely grouted, and the grouting in the area is finished, and the grouting area is entered.

The concentration of the slurry, the ratio of the water-cement ratio of the thick slurry provided by the present invention is 2:1, and the ratio of the water-cement ratio of the slurry is 0.6:1. After the permeability coefficient of each grouting hole is obtained through the water permeability test, the respective notes can be known according to the permeability coefficient. The optimum slurry concentration of the slurry hole is mixed with the slurry of different flow rates to obtain the desired slurry concentration.

The grouting pressure, when grouting in the grouting hole, needs to control the grouting pressure should not be too large, and should be based on the premise that no rock mass splitting occurs, so the highest grouting pressure should be set, in the grouting process, if When the maximum grouting pressure is reached, it should be controlled in time to reduce the pressure through the pressure regulating valve.

The grouting ends the final pressure. In the target grouting area, the grouting pressure is fed back in real time according to the pressure sensor on the mixing grouting pipe of the grouting branch, and the grouting pressure of a certain grouting hole in the middle of the area suddenly rises. When it is considered that the design area of the grouting hole has been filled with the slurry, a sudden increase in pressure occurs, and the grouting hole reaches the final pressure at the end of grouting, and the grouting ends; when all the grouting holes in the target area are reached When this grouting finishes the final pressure, it is considered that the grouting in this area reaches the end pressure of grouting end, and the area is grouted and transferred to the next area.

The invention has the following beneficial effects: 1) providing a smart grouting method for complex geological regions, obtaining the permeability coefficient of each grouting hole in the region by the water permeability test, determining the optimum slurry concentration suitable for each grouting hole, and installing on each pipe Sensors and control valves allow real-time control for intelligent grouting. 2) By controlling the mixing ratio of the slurry to different flow rates, the optimum slurry concentration suitable for each grouting hole can be prepared to achieve the best grouting effect. 3) A corresponding final pressure at the end of grouting is proposed. When the grouting pressure of a grouting hole in the middle of the area suddenly rises, it is considered that the grouting hole design area has been filled with the slurry, and the end grouting is completed. When all the intermediate grouting holes in the area reach the final pressure at the end of grouting, it is considered that the grouting in this area reaches the final pressure at the end of grouting, and the grouting in the area is ended. 4) The method realizes intelligent grouting under complex geological conditions, with high degree of automation, can greatly improve the grouting speed of the roadway, high construction efficiency, and the construction efficiency and quality can be guaranteed.

DRAWINGS

Figure 1 is a schematic view showing the structure of the apparatus of the present invention;

Figure 2 is a flow chart of the grouting method;

Figure 3 is a detailed introduction diagram of the intelligent control system;

In the figure, 1. thick slurry storage tank; 2. slurry slurry tank; 3. water tank; 4. thick slurry grouting pump; 5. slurry grouting pump; 6. thick grout main grouting pipeline; Slurry main grouting pipeline; 8-1-8-4. flow sensor; 9-1-9-4. flow sensor; 10-1-10-4. mixing tank; 11-1-11-4. Sensor; 12-1-12-4. Flow sensor; 13-1-13-4. Grouting branch; 14. Smart control system; 14-1. Water permeability detection module; 14-2. Slurry ratio module; 14-3. Grouting control module; 14. Computer; A1-A4. Electronic three-way valve; B1-B4. Electronic three-way valve; C1-C4. Flow regulating valve; D1-D4. Flow regulating valve; E1-E4 .A pressure regulating valve.

Detailed ways

The grouting method of the present invention is further described in conjunction with the accompanying drawings:

As shown in Figure 1, a complex geological area intelligent grouting system, including thick slurry storage tank 1, slurry storage tank 2, grouting pump 4, 5, intelligent control system 14 and corresponding according to the number of holes a plurality of grouting branches 13-1-13-4 are arranged; the thick slurry storage tank 1 is connected to the main grouting pipeline 6 of the thick slurry, and the slurry storage tank 2 is connected to the main grouting pipeline 7 of the slurry, each main Grouting pumps 4, 5 are arranged on the grouting pipeline; each grouting branch 13-1-13-4 comprises a mixing tank 10-1-10-4, and a mixing tank 10-1-10-4 respectively Connected thick slurry grouting branch pipe, slurry grouting branch pipe and mixed grouting pipe; the thick slurry grouting branch pipe and the slurry grouting branch pipe are connected to the main grouting of the thick slurry through the electronic three-way valves A1-A4 and B1-B4 Pipeline 6, slurry main grouting pipe 7, and flow meter 8-1-8-4, 9-1-9-4 and flow regulating valve C1-C4 are respectively set on the grouting branch pipe and the slurry grouting branch pipe The mixed grouting pipe is connected with the grouting hole, and the pipeline is provided with a pressure sensor 11-1-11-4, a flow sensor 12-1-12-4 and a pressure regulating valve E1-E4; the flow sensor 8 -1-8-4, 9-1-9-4, 12-1-12-4, flow regulating valve C1-C4, pressure transmission And a pressure regulating valve is 11-1-11-4 E1-E4 are connected with the control system 14 intelligence.

The thick slurry pump 4 or the slurry grouting pump 5 is connected to the water tank 3.

The thick slurry grouting pump 4 and the slurry grouting pump 5, because of the splitting action, select a large flow high pressure grouting pump to ensure that after the main pipeline is diverted, each branch pipeline can still have sufficient grouting pressure to ensure Grouting quality.

The mixing tank 10-1-10-4 is provided with a density sensor, and the mixed slurry concentration is transmitted to the intelligent control system 14 in real time, and the real-time monitoring is performed to ensure that the dispensed slurry concentration meets the requirements.

As shown in FIG. 3, the smart control system 14 is composed of a water permeability detecting module 14-1, a slurry proportioning module 14-2, a grouting control module 14-3, and a computer 14-4; the water permeability detecting module 14 -1, the slurry proportioning module 14-2, the grouting control module 14-3 receives the information fed back by the data collecting device, and is stored and analyzed by the computer 14-4, and controls the valves on each pipe; water permeability The monitoring module 14-1 passes through the grouting branch pipe installed on each grouting branch 13-1-13-4, the pressure sensor 11-1-11-4 on the slurry grouting branch pipe, and the flow sensor 8-1- 8-4, 9-1-9-4 collect information and store it in computer 14-4 for correlation calculation and analysis; slurry proportioning module 14-2 is based on thick slurry grouting branch and slurry grouting branch After the information collected by the flow sensors 8-1-8-4, 9-1-9-4 is analyzed, the flow regulating valves C1-C4 and D1- on the slurry grouting branch pipe and the slurry grouting branch pipe are controlled. The opening degree of D4 is such that the slurry is mixed in the mixing tank 10-1-10-4 according to the designed flow ratio to obtain the desired slurry concentration; the grouting control module 14-3 is installed through The pressure sensor 11-1-11-4 and the flow sensor 12-1-12-4 on the mixed grouting pipe of the grouting branch 13-1-13-4 pipeline collect information, and pay attention to the grouting of each grouting hole in real time. The state is controlled by the pressure regulating valves E1-E4. When the end criterion is reached, the electronic three-way valves A1-A4, B1-B4 of the grouting branch 13-1-13-4 are closed.

Step 4) monitoring the grouting of each branch pipe by the sensor on the pipeline of each grouting branch 13-1-13-4, and feeding back the collected information to the intelligent control system 14;

Step 5) The intelligent control system 14 controls the grouting of each grouting branch 13-1-13-4 in real time according to the feedback information, and ends the grouting when the end pressure of the grouting end is reached.

The water permeability detection is performed by the grouting pumps 4 and 5 connected to the water tank 3 to simultaneously pressurize the porous in the complex geological region, and the pressure sensor on the mixed grouting pipe of the grouting branch 13-1-13-4 pipeline is 11- 1-11-4 and the flow sensor 12-1-12-4 obtain the water injection pressure and flow rate, and obtain the permeability coefficient of each grouting hole by the relevant formula.

The intelligently adjusting the grouting parameter, based on the permeability coefficient of each grouting hole, determining the optimal slurry concentration of each grouting hole, and adjusting the thick grouting branch pipe of each grouting branch 13-1-13-4, thinning The flow regulating valves C1-C4 and D1 - D4 on the slurry grouting branch pipe, the flow rate of the thick slurry is adjusted proportionally, and mixed in the mixing tank 10-1-10-4 to obtain different slurry concentrations, thereby realizing each The grouting holes obtain the effect of the respective optimum slurry concentration.

The monitoring and real-time feedback information, the sensors on each grouting branch 13-1-13-4, the pressure and flow information on the corresponding pipeline are fed back to the intelligent control system 14 in real time, and the flow rate in the branch pipe is fed back in real time, so that The smart control system 14 controls the slurry concentration.

The grouting method is: storing two concentrations of cement slurry in the thick slurry storage tank 1 and the slurry slurry storage tank 2 respectively; the grouting pumps 4, 5 input the slurry from the slurry storage tank into the mixing and mixing tank 10- 1-10-4; the intelligent control system 14 respectively controls the grouting branch pipe of the grouting branch 13-1-13-4 corresponding to each grouting hole and the electronic three-way valve A1- on the slurry grouting branch pipe The opening degree of A4, B1-B4, thereby controlling the concentration of the slurry entering the mixing tank 10-1-10-4; when the concentration of the slurry in the mixing tank 10-1-10-4 satisfies the corresponding grouting hole At the optimum slurry concentration, the intelligent control system 14 controls the mixing tank 10-1-10-4 to input the slurry into the grouting hole, and simultaneously controls the grouting pressure by controlling the pressure regulating valves E1-E4 on the mixing grouting pipe. When a single grouting hole reaches the final pressure at the end of grouting, the grouting is finished until all the grouting holes in the grouting area are completely grouted, and the grouting in the area is finished, and the grouting area is entered.

The grouting ends the final pressure, and in the target grouting area, the grouting pressure is fed back in real time according to the pressure sensor 11-1-11-4 on the mixing grouting pipe of the grouting branch 13-1-13-4. When the grouting pressure of a grouting hole in the middle of the area suddenly rises, it is considered that the design area of the grouting hole has been filled with the slurry, so that a sudden increase in pressure occurs, and the grouting hole reaches the final pressure at the end of grouting, and the injection At the end of the slurry; when all the grouting holes in the target area reach the final pressure at the end of grouting, it is considered that the grouting in this area reaches the final pressure at the end of grouting, ending the grouting in the area and transferring to the next area. .

Example 1

As shown in FIG. 2, the present invention simultaneously proposes a smart grouting method of the above system, and the specific steps are as follows:

Step 1. Select a section of the target grouting roadway for support. According to the design requirements, determine the position and size of the grouting hole to ensure that the grouting hole spacing is not less than the diffusion radius of the slurry.

Step 2: Open the electronic three-way valve A1-A4 on the main grouting pipe 6 of the thick slurry, and open the grouting pump 4. The water flow is diverted to the branch pipes 13 through the pipes connecting the water tank 3 through the electronic three-way valves A1-A4. -1-13-4, each grouting hole is simultaneously filled with water, and real-time water injection is obtained through the pressure sensor 11-1-11-4 and the flow sensor 12-1-12-4 on the branch pipe 13-1-13-4. Pressure and flow rate, the collected information is transmitted to the intelligent control system 14, and the permeability q and the permeability coefficient K of each grouting hole are calculated, and the calculation formula is as follows;

In the formula, Q is the water injection amount of the drilling hole, the unit is L/min; p is the pressure of the drilling hole, the unit is MPa; and L is the drilling length, the unit is m.

Where r is the drilling radius in m.

Step 3: According to the feedback information, the permeability coefficient of each hole is calculated, and the optimal grouting concentration of each grouting hole is determined according to the permeability coefficient; the thick slurry passes through the thick grout main grouting pipe 6 through the electronic three-way valve A1-A4 Entering the thick slurry branch pipe, the slurry passes through the slurry main grouting pipe 7 through the electronic three-way valve B1-B4 into the slurry branch pipe, and through adjusting the flow regulators C1-C4 and D1-D4 on the thick slurry branch pipe and the slurry slurry branch pipe, The ratio of each slurry flow rate is controlled to mix to achieve the desired slurry concentration.

Assuming that the required slurry concentration is n:1, the ratio of the injection volume of the thick slurry is A:B. We know that the concentration of the thick slurry is 2:1 and the concentration of the slurry is 0.6:1, so that:

From this equation we can get the injection ratio of the thick slurry to:

Step 4: After the flow-adjusted thick slurry is thoroughly mixed by the slurry mixing tank 101-10-4, it enters the branch grouting pipe 13-1-13-4. After the slurry enters the branch grouting pipe 13-1-13-4, the real-time grouting pressure can be obtained through the pressure sensor 11-1-11-4, and the collected information is fed back to the intelligent control system 14 in real time, intelligent control System 14 is regulated by controlling pressure regulating valves E1-E4 on the bypass grouting line. According to the permeability, the pressure of the rock mass when the crack occurs is determined by the formula. The calculation formula is as follows:

p=σ _t -3σ ₃ +σ ₁

Where p is the grouting pressure, unit pa; σ _t is the maximum tensile pressure, unit pa; σ ₁ is the maximum main pressure, unit pa; σ ₃ is the minimum main pressure, unit pa;

Step 5: Real-time monitoring of the grouting hole by the pressure sensor 11-1-11-4 and the flow sensor 14-1-14-4 determines the true grouting state of the grouting hole, and the grouting hole reaches the grouting through the information fed back in real time. When the final pressure is over, the electronic three-way valve of the pipeline is closed, and when all the grouting holes in the target area reach the final pressure at the end of grouting, the grouting is finished, and the next area grouting is performed.

In the present invention, only four grouting branch pipes are listed, but in practice, the grouting branch pipe can be increased according to the number of grouting holes in the target range, without affecting the use of the present invention.

Claims

A complex grouting area intelligent grouting system, which comprises a thick slurry storage tank, a slurry storage tank, a grouting pump, a smart control system and a plurality of grouting branches corresponding to the number of drill holes; The thick slurry storage tank is connected to the main grouting pipeline of the thick slurry, the slurry storage tank is connected to the main grouting pipeline of the slurry, and the grouting pump is arranged on each main grouting pipeline; each grouting branch includes a mixing and agitating tank, And a thick slurry grouting branch pipe, a slurry grouting branch pipe and a mixed grouting pipe respectively connected with the mixing stirrer; the thick grouting branch pipe and the slurry grouting branch pipe are connected to the thick grout main grouting pipe through an electronic three-way valve a slurry grouting pipe is disposed, and a flow sensor and a flow regulating valve are respectively disposed on the thick grouting branch pipe and the slurry grouting branch pipe; the mixed grouting pipe is connected with the grouting hole, and the pipeline is provided with a pressure sensor, Flow sensor and pressure regulating valve; the flow sensor, flow regulating valve, pressure sensor and pressure regulating valve are all connected with the intelligent control system.
The intelligent geological region intelligent grouting system according to claim 1, wherein the thick slurry grouting pump or the slurry grouting pump is connected to the water tank; the grouting pump selects a large flow high pressure grouting pump .
The intelligent geological region intelligent grouting system according to claim 1, wherein the mixing tank is provided with a density sensor, and the mixed slurry concentration is transmitted to the intelligent control system in real time, and the real-time monitoring ensures the matching. The concentration of the slurry is in accordance with the requirements.
The intelligent geological region intelligent grouting system according to claim 1, wherein the intelligent control system is composed of a water permeability detecting module, a slurry proportioning module, a grouting control module and a computer; and a water permeability detecting module The slurry proportioning module and the grouting control module receive the information fed back by the data acquisition device, and are stored and analyzed by the computer, and control the valves on the pipelines; the water permeability monitoring module is installed on each of the grouting branches. The slurry grouting branch pipe, the pressure sensor on the slurry grouting branch pipe and the flow sensor collect information and store it in the computer for relevant calculation and analysis; the slurry proportioning module is based on the grouting grouting branch pipe and the slurry grouting branch pipe After analyzing the information collected by the flow sensor, the opening of the flow regulating valve on the thick slurry grouting branch pipe and the slurry grouting branch pipe is controlled, so that the slurry is mixed in the mixing tank according to the designed flow ratio, and the expected result is obtained. Slurry concentration; the grouting control module passes the pressure transmission on the mixed grouting pipe of each grouting branch pipe The sensor and the flow sensor collect information, pay attention to the grouting state of each grouting hole in real time, and perform corresponding control through the pressure regulating valve. When the end criterion is reached, the electronic three-way valve of the grouting branch is closed.
A complex geological region intelligent grouting method using the system according to any one of claims 1 to 4, characterized in that it comprises water permeability detection in a complex geological region, intelligent adjustment of grouting parameters, monitoring and feedback of real-time information And real-time control of the intelligent control system, the specific steps include:

Step 1) Select a section of the target grouting roadway for support, and determine the position and size of the grouting hole according to the design requirements;

Step 2) The porous in the region is simultaneously subjected to water permeability detection, and the permeability coefficient of each grouting hole is obtained by calculating the data according to the data obtained by the sensor;

Step 3) determining the optimal slurry concentration of each grouting hole based on the permeability coefficient of each grouting hole in the area, and intelligently adjusting the grouting parameter;

Step 4) monitoring the grouting of each branch pipe by the sensors on the pipelines of the grouting branches, and feeding back the collected information to the intelligent control system;

Step 5) The intelligent control system controls the grouting of each grouting branch in real time according to the feedback information, and ends the grouting when the final end of the injection is reached.
The intelligent grouting method for complex geological region according to claim 5, wherein the water permeability detecting is performed by a grouting pump connected to the water tank to simultaneously pressurize the porous in the complex geological region, and the grouting branch pipe is The pressure sensor and the flow sensor on the mixed grouting pipe obtain the water injection pressure and the flow rate, and obtain the permeability coefficient of each grouting hole by the relevant formula; the water permeability detection is performed by the grouting pump connecting the water tank to simultaneously pressurize the porous in the complex geological region. The intelligently adjusted grouting parameters of the water and grouting branch pipelines are determined based on the permeability coefficients of the grouting holes, and the optimum slurry concentration of each grouting hole is determined, and the grouting branch pipes of the grouting branches are adjusted, The flow regulating valve on the slurry grouting branch pipe adjusts the flow rate of the thick slurry in proportion, and mixes in the mixing tank to obtain different slurry concentrations, so as to achieve the effect of obtaining the optimum slurry concentration of each grouting hole; The monitoring and real-time feedback information, the sensors on each grouting branch, the pressure and flow information on the corresponding pipeline are fed back to the intelligent control system in real time, real-time anti- The amount of flow in the feed pipe is controlled so that the intelligent control system controls the slurry concentration.
The intelligent grouting method for complex geological region according to claim 5, wherein the grouting method comprises: storing two concentrations of cement slurry in a thick slurry storage tank and a slurry storage tank, respectively. The grouting pump inputs the slurry from the slurry tank to the mixing tank; the intelligent control system controls the grouting branch pipe of the grouting branch corresponding to each grouting hole and the electronic three-way valve on the slurry grouting branch pipe respectively. Opening degree, thereby controlling the concentration of the slurry entering the mixing tank; when the concentration of the slurry in the mixing tank satisfies the optimum slurry concentration of the corresponding grouting hole, the intelligent control system controls the mixing tank to input the slurry into the grouting hole At the same time, by controlling the pressure regulating valve on the mixing grouting pipe, the grouting pressure is controlled; when the single grouting hole reaches the final pressure at the end of grouting, the grouting is finished until all the grouting holes in the grouting area are all Grouting is completed, the grouting in the area is finished, and the grouting area is entered.
The intelligent grouting method for complex geological region according to claim 5, wherein the slurry concentration, the ratio of the water-cement ratio of the thick slurry provided by the present invention is 2:1, and the ratio of the water-cement ratio of the slurry is 0.6:1. After obtaining the permeability coefficient of each grouting hole through the water permeability test, the optimum slurry concentration of each grouting hole can be known according to the permeability coefficient, and the mixed slurry ratio of different flow rates is obtained to obtain the desired slurry concentration.
The intelligent grouting method for complex geological region according to claim 5, wherein the grouting pressure is controlled when the grouting hole is grouted, and the grouting pressure is not excessively large, and the rock should not occur. As the premise of body splitting, the highest grouting pressure should be set. In the grouting process, if the highest grouting pressure is reached, it should be controlled in time to reduce the pressure through the pressure regulating valve.
A method for intelligent grouting of complex geological regions according to claim 5, wherein said grouting ends the final pressure, and in the target grouting area, according to the pressure sensor on the mixed grouting pipe of the grouting branch The grouting pressure is fed back in real time. When the grouting pressure of a grouting hole in the middle of the area suddenly rises, it is considered that the grouting hole design area has been filled with the slurry, so that a sudden increase in pressure occurs, and the grouting hole is reached. The final pressure is applied at the end of grouting, and the grouting is finished. When all the grouting holes in the target area reach the final pressure at the end of grouting, it is considered that the grouting in this area reaches the final pressure at the end of grouting, and the end of the grout is ended. Slurry, go to the next area.