阅读说明：本技术 一种巷道注浆设备及注浆方法 (Roadway grouting equipment and grouting method ) 是由 许星 黄以寿 沈阳 蒋明宇 李磊 牛孝建 程凯 杜理想 吴兵 苏小勇 于 2020-07-06 设计创作，主要内容包括：本发明公开了一种巷道注浆设备及注浆方法,属于煤矿安全开采设备领域,包括注浆锚杆,注浆锚杆设有多根,浆液搅拌桶通过管道与注浆泵连接,注浆泵通过总出液软管与注浆锚杆连接,多根注浆锚杆并联在一起。本巷道注浆设备及注浆方法,提高了注浆进度,一支总出液管路分支并联到6个分支出液管路,可一次同时注6根注浆锚杆,大大提高了效率；本注浆方法可以大范围一次注浆,扩散半径广,能够充分充填围岩裂隙,加强巷道支护强度；本注浆方法一次安装或拆除多孔出液管路,较以往减少了频繁登高作业换孔的次数,有效降低劳动强度,提高安全保障。(The invention discloses roadway grouting equipment and a grouting method, and belongs to the field of coal mine safety mining equipment. The roadway grouting equipment and the grouting method improve the grouting progress, one main liquid outlet pipeline branch is connected in parallel to 6 branch liquid outlet pipelines, 6 grouting anchor rods can be simultaneously injected at one time, and the efficiency is greatly improved; the grouting method can realize large-range one-time grouting, has a wide diffusion radius, can fully fill surrounding rock cracks, and enhances the supporting strength of a roadway; the grouting method has the advantages that the porous liquid outlet pipeline is installed or removed at one time, the frequency of hole replacement in frequent ascending operation is reduced compared with the conventional grouting method, the labor intensity is effectively reduced, and the safety guarantee is improved.)

1. The utility model provides a tunnel slip casting equipment which characterized in that: including thick liquid agitator, grouting pump, total liquid hose, branch's play liquid hose and slip casting stock, the slip casting stock is equipped with many, be 1 slip casting stock respectively, No. 2 slip casting stock, No. 3 slip casting stock, No. 4 slip casting stock, No. 5 slip casting stock and No. 6 slip casting stock, the thick liquid agitator passes through the pipeline and is connected with the grouting pump, the slip casting pump is connected with No. 6 slip casting stocks through total liquid hose, No. 6 slip casting stock sets up the blender with total liquid hose's junction, set up the manometer in the blender, set up control flap on the total liquid hose, No. 6 slip casting stock passes through branch's play liquid hose and is connected with No. 5 slip casting stock, No. 5 slip casting stock passes through branch's play liquid hose and is connected with No. 4 slip casting stock, No. 3 slip casting stock and No. 1 slip casting stock loop through branch's play liquid.

2. The roadway grouting apparatus of claim 1, wherein: and check valves are arranged at the joints of the branch liquid outlet hose and the No. 1 grouting anchor rod, the No. 2 grouting anchor rod, the No. 3 grouting anchor rod, the No. 4 grouting anchor rod and the No. 5 grouting anchor rod.

3. The roadway grouting apparatus of claim 1, wherein: the branch liquid outlet hose is provided with a pressure gauge at the joint of the No. 1 grouting anchor rod, the No. 2 grouting anchor rod, the No. 3 grouting anchor rod, the No. 4 grouting anchor rod and the No. 5 grouting anchor rod.

4. The roadway grouting apparatus of claim 1, wherein: the distance between two adjacent grouting anchor rods is 1.5-1.8 m.

5. The roadway grouting apparatus of claim 1, wherein: the length of the branch liquid outlet hose is 2.4 m-2.6 m.

6. A roadway grouting method is characterized by comprising the following steps:

(1) starting a slurry stirring barrel to stir the grouting liquid, wherein the grouting liquid flows to a grouting pump through a pipeline, and the grouting pump conveys the grouting liquid to each grouting anchor rod through a main liquid outlet hose;

(2) each grouting anchor rod is provided with a pressure gauge, the grouting pressure of the grouting anchor rod is recorded in real time by observing the pressure on each grouting anchor rod, and each grouting anchor rod is provided with a check valve to prevent slurry from flowing backwards;

(3) after grouting is stopped, in order to prevent grouting liquid from solidifying in the grouting anchor rod, water is introduced into the grout stirring barrel, and grout in the grouting anchor rod is washed out through the introduction of the water.

Technical Field

The invention relates to the field of coal mine safety mining equipment, in particular to roadway grouting equipment and a grouting method.

Background

With the increasing of the coal mining amount, many domestic mines enter a deep mining state in succession. After a mine enters a deep part for mining, tunnel surrounding rocks show the characteristics of ground stress increase, deformation damage aggravation, difficult supporting, repeated repair and the like, when a water-bearing stratum is encountered, the rock mass shows relatively weak properties under influence, the situations of surrounding rock deformation, stratum local collapse, water inrush when meeting water points and the like are easily caused, the safety of personnel and equipment is threatened, and normal production is delayed. In the field construction design, a grouting method is generally adopted for water plugging and surrounding rock reinforcement. The grouting technology can bond the loose and broken surrounding rocks into a whole, improve the strength of rock mass and improve the bearing capacity of the surrounding rocks, and is convenient to construct and low in cost. The existing commonly used grouting method is that a shallow hole is drilled in surrounding rock, then a grouting pipe is inserted for low-pressure grouting, and when the bearing capacity of a shallow rock body is improved to a certain degree, a deep hole is drilled for high-pressure strong grouting. The grouting method combining deep and shallow holes ensures the grout receiving amount of the rock mass, enlarges the grouting radius and achieves the effect of grouting, water plugging and reinforcing.

At the same time, there are many disadvantages to this grouting method: (1) the grouting method needs two drilling constructions, two sets of grouting pipelines matched with the drilling specifications cannot be used in series, the labor intensity is high, and the process is complex; (2) the existing grouting method can only be used for grouting one hole at a time, the grouting efficiency is low, the number of personnel is large, the grouting engineering is lagged, and the supporting requirement cannot be met in time.

Disclosure of Invention

The invention aims to solve the technical problem of providing grouting equipment capable of realizing large-range grouting and improving the grouting work efficiency.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a roadway grouting device comprises a grout stirring barrel, a grouting pump, a total liquid outlet hose, branch liquid outlet hoses and grouting anchor rods, the slip casting stock is equipped with many, be 1 slip casting stock respectively, No. 2 slip casting stock, No. 3 slip casting stock, No. 4 slip casting stock, No. 5 slip casting stock and No. 6 slip casting stock, the thick liquid agitator passes through the pipeline and is connected with the grouting pump, the grouting pump is connected with No. 6 slip casting stock through total liquid hose, No. 6 slip casting stock sets up the blender with total liquid hose's junction, set up the manometer in the blender, set up control flap on the total liquid hose, No. 6 slip casting stock is connected with No. 5 slip casting stock through branch liquid hose, No. 5 slip casting stock is connected with No. 4 slip casting stock through branch liquid hose, No. 4 slip casting stock, No. 3 slip casting stock and No. 1 slip casting stock loop through branch liquid hose and connect in parallel together.

Preferably, the branch liquid outlet hose and the joints of the No. 1 grouting anchor rod, the No. 2 grouting anchor rod, the No. 3 grouting anchor rod, the No. 4 grouting anchor rod and the No. 5 grouting anchor rod are provided with check valves.

Preferably, the branch liquid outlet hose and the joints of the No. 1 grouting anchor rod, the No. 2 grouting anchor rod, the No. 3 grouting anchor rod, the No. 4 grouting anchor rod and the No. 5 grouting anchor rod are provided with pressure gauges.

Preferably, the distance between two adjacent grouting anchor rods is 1.5-1.8 m.

Preferably, the length of the branch liquid outlet hose is 2.4 m-2.6 m.

A roadway grouting method comprises the following steps:

(1) starting a slurry stirring barrel to stir the grouting liquid, wherein the grouting liquid flows to a grouting pump through a pipeline, and the grouting pump conveys the grouting liquid to each grouting anchor rod through a main liquid outlet hose;

(2) each grouting anchor rod is provided with a pressure gauge, the grouting pressure of the grouting anchor rod is recorded in real time by observing the pressure on each grouting anchor rod, and each grouting anchor rod is provided with a check valve to prevent slurry from flowing backwards;

(3) after grouting is stopped, in order to prevent grouting liquid from solidifying in the grouting anchor rod, water is introduced into the grout stirring barrel, and grout in the grouting anchor rod is washed out through the introduction of the water.

By adopting the technical scheme of the invention, the following beneficial effects can be obtained:

the roadway grouting equipment and the grouting method improve the grouting progress, one main liquid outlet pipeline branch is connected in parallel to 6 branch liquid outlet pipelines, 6 grouting anchor rods can be simultaneously injected at one time, and the efficiency is greatly improved; the grouting method can realize large-range one-time grouting, has a wide diffusion radius, can fully fill surrounding rock cracks, and enhances the supporting strength of a roadway; the grouting method has the advantages that the porous liquid outlet pipeline is installed or removed at one time, the frequency of hole replacement in frequent ascending operation is reduced compared with the conventional grouting method, the labor intensity is effectively reduced, and the safety guarantee is improved.

Drawings

The contents of the description and the references in the drawings are briefly described as follows:

FIG. 1 is a schematic plan structure view of the grouting equipment;

the labels in the above figures are: 1. a slurry stirring barrel; 2. grouting pump; 3. a total liquid outlet hose; 4. a branch liquid outlet hose; 5. 6, grouting an anchor rod; 6. no. 5 grouting anchor rod; 7. grouting anchor rod No. 4; 8. grouting anchor rod No. 3; 9. grouting anchor rod No. 2; 10. no. 1 slip casting stock.

Detailed Description

The embodiments of the present invention, such as the shapes and structures of the respective members, the mutual positions and connection relationships between the respective portions, the functions and operation principles of the respective portions, will be described in further detail below with reference to the accompanying drawings.

As shown in figure 1, the roadway grouting equipment comprises a grout mixing tank 1, a grouting pump 2, a total liquid outlet hose 3, branch liquid outlet hoses 4 and grouting anchor rods, wherein the grouting anchor rods are provided with a plurality of grouting anchor rods, namely a grouting anchor rod 1 10, a grouting anchor rod 2, a grouting anchor rod 3, a grouting anchor rod 8, a grouting anchor rod 4, a grouting anchor rod 5 and a grouting anchor rod 6 5, the grout mixing tank 1 is connected with the grouting pump 2 through a pipeline, the grouting pump 2 is connected with the grouting anchor rod 6 through the total liquid outlet hose 3, a mixer is arranged at the joint of the grouting anchor rod 6 and the total liquid outlet hose 3, a pressure gauge is arranged in the mixer, a control valve is arranged on the total liquid outlet hose 3, the grouting anchor rod 6 is connected with the grouting anchor rod 5 through the branch liquid outlet hose 4, the grouting anchor rod 5 is connected with the grouting anchor rod 4 through the branch liquid outlet hose 4, and the grouting anchor rod 7, The No. 3 grouting anchor rod 8 and the No. 1 grouting anchor rod 10 are connected in parallel through the branch liquid outlet hose 4 in sequence.

As shown in fig. 1, check valves are arranged at the joints of the branch liquid outlet hose 4 and the grouting anchor rods 1, 2, 3, 4, 5 and 6. The pressure gauge is arranged at the joint of the branch liquid outlet hose 4 and the grouting anchor rod 1, the grouting anchor rod 2, the grouting anchor rod 3, the grouting anchor rod 4, the grouting anchor rod 7 and the grouting anchor rod 5, the distance between every two adjacent grouting anchor rods is 1.5 m-1.8 m, and the length of the branch liquid outlet hose 4 is 2.4 m-2.6 m.

The roadway grouting method comprises the following steps:

(1) starting a slurry stirring barrel 1 to stir the grouting slurry, wherein the grouting slurry flows to a grouting pump 2 through a pipeline, and the grouting pump 2 conveys the grouting slurry to each grouting anchor rod through a total liquid outlet hose 3;

(2) each grouting anchor rod is provided with a pressure gauge, the grouting pressure of the grouting anchor rod is recorded in real time by observing the pressure on each grouting anchor rod, and each grouting anchor rod is provided with a check valve to prevent slurry from flowing backwards;

(3) after grouting is stopped, in order to prevent grouting liquid from solidifying in the grouting anchor rod, water is introduced into the grout stirring barrel 1, and grout in the grouting anchor rod is washed out through the introduction of the water.

Because the parallel arrangement between each slip casting stock, can not influence the work of other slip casting stocks according to certain slip casting stock of actual conditions optional switch during the slip casting, select the quantity of connecting the slip casting stock according to actual slip casting demand.

The roadway grouting equipment and the grouting method improve the grouting progress, one main liquid outlet pipeline branch is connected in parallel to 6 branch liquid outlet pipelines, 6 grouting anchor rods can be simultaneously injected at one time, and the efficiency is greatly improved; the grouting method can realize large-range one-time grouting, has a wide diffusion radius, can fully fill surrounding rock cracks, and enhances the supporting strength of a roadway; the grouting method has the advantages that the porous liquid outlet pipeline is installed or removed at one time, the frequency of hole replacement in frequent ascending operation is reduced compared with the conventional grouting method, the labor intensity is effectively reduced, and the safety guarantee is improved.

The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.