阅读说明：本技术 一种注浆压力智能控制仪及智能注浆方法 (Grouting pressure intelligent control instrument and intelligent grouting method ) 是由 赵瑜 沈明轩 毕靖 王超林 宁麟 杨进强 韦韬 党爽 都粲 连帅龙 刘朝美 黄 于 2020-11-10 设计创作，主要内容包括：本发明涉及一种土体隧道自动注浆领域,特别是涉及一种注浆压力智能控制仪及智能注浆方法,控制仪包括：注浆管道、压力传感器、压力采集设备、智能控制中心、流量控制设备、注浆孔；其中,所述注浆管道下端开设有注浆孔,且管道中横向设置有一阀门,所述压力传感器、压力采集设备、智能控制中心、流量控制设备均固定于所述注浆管道上。该注浆压力智能控制仪能极大的提高土体隧道注浆工作的效率,降低成本。(The invention relates to the field of automatic grouting of soil tunnels, in particular to an intelligent grouting pressure control instrument and an intelligent grouting method, wherein the control instrument comprises: the grouting device comprises a grouting pipeline, a pressure sensor, pressure acquisition equipment, an intelligent control center, flow control equipment and a grouting hole; the grouting hole is formed in the lower end of the grouting pipeline, a valve is transversely arranged in the pipeline, and the pressure sensor, the pressure acquisition equipment, the intelligent control center and the flow control equipment are all fixed on the grouting pipeline. The grouting pressure intelligent control instrument can greatly improve the efficiency of the grouting work of the soil body tunnel and reduce the cost.)

1. The utility model provides a slip casting pressure intelligent control appearance which characterized in that includes: the grouting device comprises a grouting pipeline, a pressure sensor, pressure acquisition equipment, an intelligent control center, flow control equipment and a grouting hole; the intelligent control system comprises a grouting pipeline, a pressure sensor, a pressure acquisition device, an intelligent control center and a flow control device, wherein the lower end of the grouting pipeline is provided with a grouting hole, a valve is transversely arranged in the pipeline, and the pressure sensor, the pressure acquisition device, the intelligent control center and the flow control device are all fixed on the grouting pipeline;

the pressure sensor is used for measuring the void pressure value of the soil body;

the pressure acquisition equipment is in communication connection with the pressure sensor and is used for receiving the soil body void pressure value measured by the pressure sensor and calculating to obtain corresponding pressure intensity;

the intelligent control center is in communication connection with the pressure acquisition equipment and is used for receiving the pressure intensity and analyzing the pressure intensity to obtain grouting flow rate;

the flow control equipment is in communication connection with the intelligent control center, is connected with the valve and is used for controlling the opening and closing size of the valve according to the grouting flow rate.

2. The intelligent grouting pressure controller according to claim 1,

the pressure acquisition equipment is in communication connection with the pressure sensor through a data line;

the intelligent control center is in communication connection with the pressure acquisition equipment through a data line;

and the flow control equipment is in communication connection with the intelligent control center through a data line.

3. The intelligent grouting pressure controller according to claim 2, wherein the data line is an optical fiber signal transmission line.

4. The intelligent grouting pressure controller according to claim 1, wherein the pressure collecting device obtains the pressure through the following formula: p is F/S; wherein P is pressure, F is pressure value, and S is contact area.

5. The intelligent grouting pressure controller according to claim 1, wherein the intelligent control center obtains the grouting flow rate through the following formula:

υ＝γaηT(80-16P)/t

wherein upsilon is grouting flow velocity and the unit is m³S; p is the pressure intensity, and the unit is MPa; t is time in units of s; gamma ray_aCoefficient of fluidity under grouting pressure, gamma_a＝0.3～1.8；η_TCoefficient of ambient temperature, η_T＝0.6～1.0。

6. The intelligent grouting pressure controller according to claim 1, wherein the pressure sensor is a vibrating wire sensor.

7. An intelligent grouting method is characterized by comprising the following steps: inserting a grouting pipeline with a pressure sensor into a soil body to be grouted, and continuously measuring the pressure value of a gap in the soil body;

calculating the pressure value to obtain corresponding pressure intensity;

calculating to obtain the grouting flow rate of the current soil body to be grouted according to the pressure data;

and grouting the soil body to be grouted according to the grouting flow velocity.

8. An intelligent grouting method according to claim 7, characterized in that the grouting flow rate is obtained by the following formula:

υ＝γaηT(80-16P)/t

wherein upsilon is grouting flow velocity and the unit is m³S; p is the pressure intensity, and the unit is MPa; t is time in units of s; gamma ray_aCoefficient of fluidity under grouting pressure, gamma_a＝0.3～1.8；η_TCoefficient of ambient temperature, η_T＝0.6～1.0。

Technical Field

The invention relates to the field of automatic grouting of soil mass tunnels, in particular to an intelligent grouting pressure control instrument and an intelligent grouting method.

Background

Because the stratum of the soil body tunnel is weak, the stratum structure is easily damaged after disturbance, and engineering problems such as cracks, uneven subsidence, collapse and the like are formed, in order to ensure the safety of various facilities and promote the stability of the soil body in the construction process, the soil body needs to be quickly grouted and reinforced, the pressure control plays a key role in controlling the grouting amount in the grouting process, and the current grouting pressure control technology is complex, the operation flow is complex, the cost is high, and the efficiency is low.

Disclosure of Invention

In view of this, an objective of the present invention is to provide an intelligent grouting pressure controller, which overcomes the above-mentioned problems of the prior art that the rapid grouting amount and grouting rate of a weak soil tunnel are difficult to control.

In order to achieve the purpose, the invention adopts the following technical scheme:

the method comprises the following steps: the grouting device comprises a grouting pipeline, a pressure sensor, pressure acquisition equipment, an intelligent control center, flow control equipment and a grouting hole; the intelligent control system comprises a grouting pipeline, a pressure sensor, a pressure acquisition device, an intelligent control center and a flow control device, wherein the lower end of the grouting pipeline is provided with a grouting hole, a valve is transversely arranged in the pipeline, and the pressure sensor, the pressure acquisition device, the intelligent control center and the flow control device are all fixed on the grouting pipeline;

the pressure sensor is used for measuring the void pressure value of the soil body;

the pressure acquisition equipment is in communication connection with the pressure sensor and is used for receiving the soil body void pressure value measured by the pressure sensor and calculating to obtain corresponding pressure intensity;

the intelligent control center is in communication connection with the pressure acquisition equipment and is used for receiving the pressure intensity and analyzing the pressure intensity to obtain grouting flow rate;

the flow control equipment is in communication connection with the intelligent control center, is connected with the valve and is used for controlling the opening and closing size of the valve according to the grouting flow rate.

Further, the pressure acquisition equipment is in communication connection with the pressure sensor through a data line; the intelligent control center is in communication connection with the pressure acquisition equipment through a data line; and the flow control equipment is in communication connection with the intelligent control center through a data line.

Further, the data line is an optical fiber signal transmission line.

Further, the pressure acquisition device obtains the pressure by the following formula: p is F/S; wherein P is pressure, F is pressure value, and S is contact area. The pressure acquisition equipment comprises a data line interface, a data converter and a data display screen, wherein the data flow direction interfaces are respectively arranged at the left end and the right end of the data converter, the left side of the data flow direction interfaces is provided with two data flow direction interfaces, the right side of the data flow direction interfaces is provided with one data flow direction interface, and the data display screen is arranged at the top of the data converter.

Further, the intelligent control center obtains the grouting flow rate through the following formula:

υ＝γaηT(80-16P)/t

wherein upsilon is grouting flow velocity and the unit is m³S; p is the pressure intensity, and the unit is MPa; t is time in units of s; gamma ray_aCoefficient of fluidity under grouting pressure, gamma_a＝0.3～1.8；η_TCoefficient of ambient temperature, η_T＝0.6～1.0。

	P	γa
			Low pressure	0＜0.5MPa	0.3
Medium pressure	0.5～3MPa	1
			High pressure	＞3MPa	1.8

η_TThe ambient temperature coefficient is preferably 1.0.

The intelligent control center comprises a screen, a data flow direction interface, a data intelligent calculator and a keyboard, wherein the screen is installed on the top edge of the intelligent calculator, and the data flow direction interface is respectively provided with two data flow direction interfaces at the left end and the right end of the intelligent calculator

The flow control equipment comprises a flow control chamber, an electric control valve and data flow direction interfaces, wherein the electric valve is arranged in the middle of the bottom of the flow control chamber, and two data flow direction interfaces are arranged on the right side of the flow control equipment.

Further, the pressure sensor is a vibrating wire sensor.

In view of the above, another objective of the present invention is to provide an intelligent grouting method, which includes the following steps:

inserting a grouting pipeline with a pressure sensor into a soil body to be grouted, and continuously measuring the pressure value of a gap in the soil body;

calculating the pressure value to obtain corresponding pressure intensity;

calculating to obtain the grouting flow rate of the current soil body to be grouted according to the pressure data;

and grouting the soil body to be grouted according to the grouting flow velocity.

Further, the grouting flow rate is obtained by the following formula:

υ＝γaηT(80-16P)/t

wherein upsilon is grouting flow velocity and the unit is m³S; p is the pressure intensity, and the unit is MPa; t is time in units of s; gamma ray_aCoefficient of fluidity under grouting pressure, gamma_a＝0.3～1.8；η_TCoefficient of ambient temperature, η_T＝0.6～1.0。

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive exercise.

FIG. 1 is a general layout diagram of an intelligent grouting pressure controller according to the invention;

FIG. 2 is a diagram of a flow control device of the grouting pressure intelligent control instrument;

FIG. 3 is a central diagram of the intelligent control of the grouting pressure intelligent control instrument;

fig. 4 is a pressure acquisition device diagram of the grouting pressure intelligent control instrument.

Reference numerals

Wherein 11 is a flow control device, 21 is an intelligent control center, 31 is a pressure acquisition device, 41 is a pressure sensor, 51 is a data line, 61 is a grouting pipeline, 62 is a grouting hole, and 63 is a valve; 111 is a flow control chamber, 112 is an electric wire interface, and 113 is an electric lifting valve; 211 is a screen, 212 is a data interface, 213 is a data intelligent calculator, and 214 is a keyboard; 311 is a data display screen, 312 is a data converter, and 313 is a data interface.

Detailed Description

The examples are given for the purpose of better illustration of the invention, but the invention is not limited to the examples. Therefore, those skilled in the art should make insubstantial modifications and adaptations to the embodiments of the present invention in light of the above teachings and remain within the scope of the invention.

Example 1

As shown in fig. 1 to 4, the grouting pressure intelligent controller of the invention comprises a pressure sensor 41, a data line 51, a pressure acquisition device 31, an intelligent control center 21 and a flow control center 11.

The pressure sensor of the grouting pressure intelligent controller is fixedly arranged on a grouting pipeline, when the grouting pipeline is added into a soil body to be grouted, the pressure sensor arranged on the grouting pipeline is used for measuring the gap pressure value in the soil body, if the soil body gap pressure value measured by the pressure sensor is 0 & lt 0.5MPa, the pressure sensor flows into the pressure acquisition equipment through a data line, and the measured soil body gap pressure value is measured.

The pressure acquisition equipment receives the data of the soil body gap pressure value, the gap pressure value is converted into pressure data through the data converter 312, the pressure acquisition equipment transmits the converted pressure data to the data intelligent control center through a data line, and the data is displayed on the display screen 311 of the pressure acquisition equipment.

After receiving the pressure data, the intelligent control center calculates the pressure through the intelligent data calculator 213, and the calculation formula is upsilon ═ γ a η T (80-16P)/T, because the obtained soil pressure value data is 0 < 0.5MPa,γ_athe grouting pressure fluidity coefficient is 0.3 eta_TThe ambient temperature coefficient is preferably 1.0, so that the grouting flow velocity upsilon is obtained. In the intelligent control, the grouting flow upsilon value flows into the flow control equipment through a data line, and the grouting flow rate value and the calculation process are displayed on the display screen 211.

And (4) grouting is carried out after the flow control equipment obtains the data, and the calculated grouting flow velocity upsilon determines the control of the flow control equipment on the valve.

And finally, the fluid passes through the valve, passes through the grouting pipeline and is grouted through the grouting hole at the lower end of the grouting pipeline.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.