CN115165528A - A kind of magnetic self-aggregation slurry pressure relief and water blocking shear performance test method - Google Patents

Abstract

The invention discloses a method for testing the pressure-releasing and water-blocking shear performance of magnetic self-aggregation slurry. Water outlet; step 2): open the valve on the water inlet pipe, and open the pressure relief valve on the pressure relief pipe; step 3): gradually adjust the pressure regulating valve, measure the corresponding magnetic force level, and the magnetic blocking rod absorbs a certain proportion of magnetic self-aggregation slurry The maximum water pressure that can be blocked is obtained, and the value of the water volume for pressure relief is obtained; Step 4): Measure the pulling force data of the corresponding magnetic plugging rod under the maximum water pressure state in Step 3); Step 5): Replace the magnetic plugging rod and Magnetic self-aggregation slurry, repeat steps 1) to 4) to obtain the experimental data of water blocking and shear resistance under pressure relief state; the present invention can obtain the plugging pressure of magnetic self-aggregation slurry in the pressure relief state and different magnetic plugging rods and The experimental data of the water blocking shear capacity corresponding to the magnetic self-aggregation slurry.

Description

A kind of magnetic self-aggregation slurry pressure relief and water blocking shear performance test method

technical field

The invention relates to the technical field of tunnels and underground engineering, in particular to a method for testing the pressure relief and water blocking shear resistance of magnetic self-aggregation slurry.

Background technique

With the growth of the national economy, my country's demand for energy development and transportation construction is increasing, and the manpower and capital components invested in various tunnel projects have increased. In underground projects such as water transfer and deep mines, due to their complex geological conditions, a large number of geological disasters are often induced, and the construction is difficult. Among them, the karst water inrush is the most serious. The water body in the karst pipeline is generally in a pressurized state, the water volume and water pressure are relatively large, and the treatment is difficult. During the excavation of the project, the karst pipeline type water inrush with large flow and high flow rate can often be exposed. If the disaster is not handled properly, it will cause serious consequences. At present, when dealing with the water gushing phenomenon, a brand-new magnetic self-aggregation slurry water plugging technology can be used, using a new type of magnetic self-aggregating slurry, and using magnetic field magnetization adsorption to block the water gushing position. However, this technology is still in the research stage. It is necessary to test and study the performance parameters of magnetic plugging rods with different magnetic force levels when they adsorb different proportions of magnetic self-aggregating slurry to block the water outlet, so as to facilitate the practical application of the project. No report has been reported, and it is necessary to study the plugging pressure of magnetic self-polymerization slurry in the pressure relief state and the experimental data of water blocking and shear resistance corresponding to magnetic plugging rods of different magnetic grades and magnetic self-polymerization slurry of different proportions.

SUMMARY OF THE INVENTION

The object of the present invention is to overcome the above-mentioned deficiencies, provide a magnetic self-aggregation slurry water blocking shear performance testing device and testing method, to test and study the magnetic self-aggregation slurries of different magnetic force grades when the magnetic plugging rods adsorb different proportions of the magnetic self-aggregation slurries to block the water outlet. Performance parameters, obtain the plugging pressure of the magnetic self-aggregation slurry in the pressure relief state and the experimental data of the water blocking and shear resistance corresponding to the magnetic plugging rods of different magnetic grades and the magnetic self-aggregation slurry of different proportions, so as to facilitate the practical application of the project.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is: a method for testing the pressure relief, water blocking and shear resistance performance of magnetic self-polymerizing slurry, which comprises the following steps:

Step 1): Use one end of a magnetic blocking rod with a certain magnetic force level to absorb a certain proportion of magnetic self-aggregation slurry, then block the water outlet end of the pressure measuring tube, and then fix the other end of the magnetic blocking rod with the end of the pressure measuring tube through a drawing rod. The set annular clamp is fixedly connected, so that the position of the magnetic blocking rod and the adsorbed magnetic self-aggregation slurry is fixed;

Step 2): Open the valve on the water inlet pipe, open the pressure relief valve on the pressure relief pipe, and continuously supply water to the water collecting tank. The water enters the pressure measuring pipe along the water outlet pipe, and flows out from the pressure relief pipe into the measuring cylinder. The pressure regulating valve adjusts the pressure at the inlet end of the pressure measuring tube;

Step 3): Gradually adjust the pressure regulating valve to gradually increase the pressure at the water inlet end of the pressure measuring tube, and measure the corresponding magnetic level through the third electronic pressure gauge at the water outlet end of the pressure measuring tube. The maximum water pressure that can be blocked, that is, once the measured water blocking pressure drops, the blocking will end. The maximum water pressure is the blocking pressure of the magnetic self-aggregation slurry in the pressure relief state under the test conditions, and the statistical flow rate The data of the meter, measuring cylinder and electronic scale to obtain the water volume value of pressure relief;

Step 4): measure the pulling force data of the corresponding magnetic blocking rod under the maximum water pressure state in step 3) by a tension meter, for later test data analysis;

Step 5): replace the magnetic plugging rods with different magnetic grades and configure the magnetic self-aggregation slurry according to different proportions, repeat steps 1) to 4), and obtain the experimental data of water blocking and shear resistance under the pressure relief state.

Preferably, one end of the water collecting tank is connected with the water inlet pipe, the other end is detachably connected with the water inlet of one end of the pressure measuring pipe through the water outlet pipe, and the position of the water outlet at the other end of the pressure measuring pipe is blocked and matched with one end of the magnetic blocking rod, The magnetic self-aggregation slurry is magnetically adsorbed at the position where the magnetic plugging rod is matched with the pressure measuring tube, and the other end of the magnetic plugging rod is fixedly connected to the end of the pressure measuring tube through a drawing rod, and the drawing rod is provided with a pulling force count.

Preferably, one end of the water collecting tank is connected to a nitrogen supplementary pressure bottle through a pressure supplementary pipe, and the water outlet pipe is also connected to a pressure reduction pipe, and a pressure reduction valve is provided on the pressure reduction pipe.

Preferably, the inside of the magnetic blocking rod is hollow and is provided with a pressure relief pipe, and the pressure relief pipe is provided with a pressure relief valve.

Preferably, the end of the pressure relief pipe extends into the measuring cylinder, the measuring cylinder is placed on the electronic scale, and the pressure relief pipe is provided with a flow meter.

Preferably, the other end of the magnetic blocking rod is fixedly connected to the annular tightening hoop fixed at the end of the pressure measuring tube through a drawing rod.

Preferably, the water collecting tank is provided with a first electronic pressure gauge, the water outlet pipe is provided with a second electronic pressure gauge, and the water outlet end of the pressure gauge is provided with a third electronic pressure gauge.

Preferably, the water inlet end of the pressure measuring tube is further provided with a pressure regulating valve and a fourth electronic pressure gauge.

Preferably, the magnetic self-polymerization slurry is oily epoxy resin magnetic self-polymerization slurry or water-based epoxy resin magnetic self-polymerization slurry, and the oily epoxy resin magnetic self-polymerization slurry includes epoxy resin A glue, epoxy resin curing agent , fly ash and ferric oxide powder; the water-based epoxy resin magnetic self-polymerization slurry includes epoxy resin emulsion, epoxy resin curing agent, cement, water and ferric oxide powder.

Beneficial effects of the present invention:

1. The method of the present invention can test and study the performance parameters of magnetic blocking rods of different magnetic force levels when adsorbing different proportions of magnetic self-aggregation slurries to block the water outlet, and obtain the plugging pressure of magnetic self-aggregation slurries under the pressure relief state and the magnetic self-aggregation slurries of different magnetic grades. The experimental data of water blocking and shear resistance corresponding to magnetic plugging rods and magnetic self-aggregation slurries with different ratios are beneficial to the application and promotion of practical engineering;

2. The test device designed in the present invention can simulate the water pressure field of various tunnels and other underground engineering under water inrush conditions, and its test data is closer to the actual engineering.

3. The test device of the present invention proposes a new scheme of piercing the pressure relief pipe inside the magnetic plugging rod. In practical engineering applications, the design of the pressure relief pipe can further improve the ability of the magnetic plugging rod to absorb the magnetic self-aggregation slurry to block the water outlet. The water blocking performance greatly improves its blocking ability and plugging timeliness. The introduction of the pressure relief and water blocking mechanism can greatly increase the engineering application value of the magnetic self-aggregation slurry.

4. The present invention can comprehensively test the water blocking performance of magnetic self-aggregation slurry by the coupling effect of various parameters such as the content of magnetic powder (iron tetroxide powder), the ratio of aggregated ash, the ratio of water and ash, etc., and it has excellent performance. Applicability and innovation, combined with the technology of material ratio and test equipment integration, it is easy to operate, low cost, low cost, flexible and convenient, widely used, and more importantly, it can be extended to the simulation of most water inrush conditions. Obtaining the parameters of slurry water blocking ability has excellent engineering value and academic value for guiding the construction and wide application of magnetic self-aggregation slurry.

Description of drawings

Fig. 1 is the structural representation of a kind of magnetic self-aggregation slurry water blocking shear performance testing device;

Fig. 2 is the enlarged structural schematic diagram of the area where the water outlet end of the piezometer is located;

Fig. 3 is the actual picture of the self-aggregation state of the magnetic self-aggregation slurry adsorbed by the magnetic plugging rod;

FIG. 4 is a schematic diagram of the state of magnetic self-aggregation slurry magnetization plugging self-aggregation.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in Figures 1 to 4, a magnetic self-aggregation slurry water blocking and shear resistance testing device provided in this embodiment includes a water inlet pipe 1 and a water collection tank 2 connected to the water inlet pipe 1. The water collection tank 2 passes through the outlet pipe. The water pipe 3 is detachably connected to the water inlet at one end of the pressure measuring pipe 4, and the position of the water outlet at the other end of the pressure measuring pipe 4 is matched with one end of the magnetic blocking rod 5, and the magnetic blocking rod 5 is blocked with the pressure measuring pipe 4. The magnetic self-aggregating slurry 6 is magnetically adsorbed at the matched position, and the other end of the shown magnetic blocking rod 5 is fixedly connected to the end of the pressure measuring tube 4 through a pulling rod 7 , and the pulling rod 7 is provided with a tension gauge 8 .

Preferably, one end of the water collecting tank 2 is connected to a nitrogen supplementary pressure bottle 10 through a pressure supplementary pipe 9 , and the water outlet pipe 3 is also connected to a pressure reduction pipe 11 , which is provided with a pressure reduction valve 12 . In this embodiment, if the water pressure in the water collection tank 2 is insufficient, the nitrogen supplementary pressure bottle 10 can be opened, and nitrogen gas is introduced into the water collection tank 2 through the supplementary pressure pipe 9, so as to realize the pressurization process, which can simulate various underground bursts. Different water pressures under different water conditions.

Preferably, the magnetic blocking rod 5 is hollow inside and is provided with a pressure relief pipe 13 , and a pressure relief valve 14 is arranged on the pressure relief pipe 13 . By adding the pressure relief pipe 13, the water blocking performance of the magnetic plugging rod 5 by adsorbing the magnetic self-aggregation slurry 6 to block the water outlet can be further improved. In the initial stage of the water outlet, the pressure relief valve 14 on the pressure relief pipe 13 can be opened first, and part of the water pressure can be removed, so as to reduce the pressure of the excessive water pressure on the position of the magnetic self-aggregation slurry 6. Wait for the magnetic self-aggregation slurry 6 After it is completely solidified, the pressure relief valve 14 on the pressure relief pipe 13 is closed again, so that the water outlet can be completely blocked.

Preferably, the end of the pressure relief pipe 13 extends into the measuring cylinder 15 , the measuring cylinder 15 rests on the electronic scale 16 , and the pressure relief pipe 13 is provided with a flow meter 23 . The volume of the water discharged through the pressure relief pipe 13 can be measured through the measuring cylinder 15 , the flow data can be obtained through the flow meter 23 , and the weight data can also be obtained through the electronic scale 16 .

Preferably, the other end of the magnetic blocking rod 5 is fixedly connected with the annular tightening hoop 17 fixed at the end of the pressure measuring tube 4 through the pulling rod 7 .

Preferably, the water collecting tank 2 is provided with a first electronic pressure gauge 18, the water outlet pipe 3 is provided with a second electronic pressure gauge 19, and the water outlet end of the pressure measuring pipe 4 is provided with a third electronic pressure gauge Manometer 20.

Preferably, a pressure regulating valve 21 and a fourth electronic pressure gauge 22 are further provided at the water inlet end of the pressure measuring tube 4 .

Preferably, the magnetic self-polymerizing slurry 6 is an oily epoxy resin magnetic self-polymerizing slurry or a water-based epoxy resin magnetic self-polymerizing slurry, and the oily epoxy resin magnetic self-polymerizing slurry includes epoxy resin A glue, epoxy resin curing agent, fly ash and ferric oxide powder; the water-based epoxy resin magnetic self-polymerizing slurry includes epoxy resin emulsion, epoxy resin curing agent, cement, water and ferric oxide powder.

In this embodiment, the advantageous properties of the oil-based epoxy resin magnetic self-polymerization slurry are: fast curing speed, which can be quickly solidified within 30-120 minutes; insoluble in water, the material itself has good hydrophobicity, and excellent anti-dispersion performance; high permeability Good performance and injectability, can penetrate into 0.1mm cracks; low shrinkage: complete contact between curing molding and bearing surface, shrinkage less than 2%; high strength and early strength: 1 day compressive strength ≥ 50Mpa, can provide much better than cement The compressive strength of the base material; good creep resistance: long-term use without plastic deformation under harsh physical conditions such as -50°C to +80°C freeze-thaw alternation; high toughness: it can dissolve any transmitted cement-based grouting The dynamic load of layer burst; this kind of material is suitable for the concentrated water inrush condition of local small-scale small holes and high pressure, and can also be applied to the reinforcement and repair of cracks and defects in various structures and buildings. It has a wide range of applications and engineering applications. bright future.

The advantages of water-based epoxy resin magnetic self-polymerizing slurry are: low cost and large dosage, making it suitable for large-scale pouring and application; material viscosity can be proportionally adjusted according to water-cement ratio, poly-ash ratio, and magnetic powder content. The adjustment threshold of the magnetic self-aggregation function is increased; the requirements for the curing environment are lower, and the bonding effect with the base material in a humid and water environment can be greatly enhanced compared with ordinary slurries, making the mechanical properties of the magnetic self-aggregation slurries more acceptable. Wide range of control; this kind of material is cost-effective and has a wide range of applications. It can be applied to any tunnel and underground engineering for impermeability and water inrush treatment. It has good stability and outstanding magnetic self-aggregation properties.

In addition, this embodiment also discloses the water blocking test method of the above-mentioned magnetic self-aggregation slurry water blocking and shear performance testing device, which comprises the following steps:

Step 1): Use one end of a magnetic blocking rod 5 with a certain magnetic force level to absorb a certain proportion of the magnetic self-aggregation slurry 6, then block the water outlet end of the pressure measuring tube 4, and then pass the other end of the magnetic blocking rod 5 through the drawing rod 7 and the measuring rod. The annular tightening hoop 17 fixed at the end of the pressure pipe 4 is fixedly connected, so that the magnetic blocking rod 5 and the adsorbed magnetic self-aggregation slurry 6 are fixed in position;

Step 2): Open the valve on the water inlet pipe 1, close the pressure relief valve 14 on the pressure relief pipe 13, continuously supply water to the water collecting tank 2, the water enters the pressure measuring pipe 4 along the water outlet pipe 3, and passes through the pressure regulating valve 21. Adjust the pressure at the water inlet end of the pressure measuring tube 4;

Step 3): gradually adjust the pressure regulating valve 21, so that the pressure at the water inlet end of the pressure measuring tube 4 is gradually increased, and the third electronic pressure gauge 20 at the water outlet end of the pressure measuring tube 4 is used to measure the corresponding magnetic force level. The maximum water pressure that can be blocked by the magnetic self-polymerization slurry 6, that is, once the measured water blocking pressure drops, the blocking ends, and the maximum water pressure is the magnetic self-polymerization slurry plugging pressure under the test conditions;

Step 4): measure the pulling force data of the corresponding magnetic blocking rod 5 under the maximum water pressure state in step 3) by the tension meter 8, for later test data analysis;

Step 5): replace the magnetic plugging rods 5 of different magnetic grades and configure the magnetic self-aggregation slurry 6 according to different proportions, and repeat steps 1) to 4) to obtain experimental data of water blocking and shear resistance.

This embodiment discloses a method for testing the pressure relief and water blocking shear performance of magnetic self-polymerizing slurry, which includes the following steps:

Step 1): Use one end of a magnetic blocking rod 5 with a certain magnetic force level to absorb a certain proportion of the magnetic self-aggregation slurry 6, then block the water outlet end of the pressure measuring tube 4, and then pass the other end of the magnetic blocking rod 5 through the drawing rod 7 and the measuring rod. The annular tightening hoop 17 fixed at the end of the pressure pipe 4 is fixedly connected, so that the magnetic blocking rod 5 and the adsorbed magnetic self-aggregation slurry 6 are fixed in position;

Step 2): Open the valve on the water inlet pipe 1, open the pressure relief valve 14 on the pressure relief pipe 13, and continuously supply water to the water collecting tank 2. The water enters the pressure measuring pipe 4 along the water outlet pipe 3, and flows from the pressure relief pipe. 13 flows out into the measuring cylinder 15, and adjusts the pressure at the water inlet end of the pressure measuring tube 4 through the pressure regulating valve 21;

Step 3): gradually adjust the pressure regulating valve 21, so that the pressure at the water inlet end of the pressure measuring tube 4 is gradually increased, and the third electronic pressure gauge 20 at the water outlet end of the pressure measuring tube 4 is used to measure the corresponding magnetic force level. The maximum water pressure that can be blocked by the magnetic self-polymerization slurry 6, that is, once the measured water blocking pressure drops, the blocking will end, and the maximum water pressure is the magnetic self-polymerization slurry under the test conditions in the pressure relief state. To block the pressure, count the data of the flow meter 23, the measuring cylinder 15 and the electronic scale 16 to obtain the water volume value of the pressure relief;

Step 4): measure the pulling force data of the corresponding magnetic blocking rod 5 under the maximum water pressure state in step 3) by the tension meter 8, for later test data analysis;

Step 5): replace the magnetic plugging rod 5 with different magnetic grades and configure the magnetic self-aggregation slurry 6 according to different proportions, repeat steps 1) to 4), and obtain experimental data of water blocking shear resistance under pressure relief state.

In this embodiment, an appropriate pressure relief amount can be selected as the fixed value, and then the water blocking shear resistance experiment under pressure relief state is obtained by using the magnetic plugging rods 5 of different magnetic grades and the magnetic self-aggregating slurry 6 according to different proportions according to the above steps. The specific table data of the data are as follows:

Table 1: Mixing ratio design table for water blocking performance test of oil-based epoxy resin magnetic self-polymerizing slurry

Table 2: Design table of water-based epoxy resin magnetic self-polymerizing slurry mix ratio

Table 3: Test results of water blocking performance of oil-based epoxy resin magnetic self-polymerizing slurry

Table 4: Water blocking performance test results of water-based epoxy resin

It can be seen from Table 3 and Table 4 that there is an obvious increasing relationship between the water blocking pressure of the two types of epoxy resin magnetic self-polymerization slurries and the magnetic field strength. ①When the magnetic self-polymerizing slurry of oil-based epoxy resin is 40% of the magnetic powder, the Gaussian strength is 12000GS, and the maximum water blocking pressure is 81Kpa. However, with the continuous increase of the amount of magnetic powder, the peak water head pressure of water plugging began to drop gradually. Because of the increase of the amount of magnetic powder, the content of magnetized particles in the slurry increased, and the uneven magnetization increased, resulting in the magnetic powder particles wrapped in the epoxy resin slurry base liquid. The molecular force between the particles increases, and the particles gradually separate from the inclusions. There is no epoxy resin base liquid between the particles, and the gap between the particles increases. decline.

②The change of water blocking pressure of water-based epoxy resin is affected by factors such as controlled poly-ash ratio, water-cement ratio and magnetic powder content. , but the water-cement ratio has a significant effect on the water plugging pressure. When the water-cement ratio is 0.2 and the magnetic powder content is 30%, due to the excessive viscosity, the slurry has no agglomeration and adsorption capacity, and the water plugging fails.

It can be seen that the invention can comprehensively test the water blocking performance of the magnetic self-aggregation slurry by the coupling effect of various parameters such as the content of magnetic powder, the ratio of polymer-ash ratio, and the ratio of water-cement ratio. The preliminary test data shows that the invention has excellent performance. Applicability and innovation, combined with the technology of material ratio and test equipment integration. It is easy to operate, low cost, low cost, flexible and convenient, widely used, and more importantly, it can be extended to the simulation of any water inrush conditions, and the parameters of the water blocking capacity of the slurry can be obtained. Excellent engineering value and academic value.

In addition, the present invention proposes that the mixing ratio of the magnetic self-aggregation slurry is based on the epoxy resin polymerization modified slurry, and the magnetic powder is added to make it have innovative magnetic self-aggregation ability. Compared with ordinary mortar, it has natural hydrophobicity and good resistance. Dispersibility, the loss rate of cementitious material for underwater construction grouting slurry is less than 5%.

Finally, the device and method for testing the water blocking performance of magnetic self-aggregation slurry proposed by the present invention utilize magnetic adsorption to make the slurry agglomerate and agglomerate, and particles such as cement, fly ash, and epoxy resin polymers are subjected to magnetic Influenced by the intermolecular force of the particles, a hard accumulation precipitate is formed inside, which is difficult to disperse, the internal friction angle is enhanced, the agglomeration adsorption effect is obvious, and the magnetic adsorption instantly increases the viscosity of the slurry. Water blocking shear resistance.

The above-mentioned embodiments are only the preferred technical solutions of the patent of the present invention, and should not be regarded as a limitation of the present invention. The embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict. The protection scope of the patent of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims as the protection scope. That is, equivalent replacements and improvements within this scope are also within the protection scope of the patent of the present invention.

Claims (9)

1. a magnetic self-polymerization slurry pressure relief water blocking shear performance testing method, is characterized in that: it comprises the steps: Step 1): Use one end of the magnetic plugging rod (5) with a certain magnetic force level to absorb a certain proportion of the magnetic self-aggregation slurry (6), then plug the water outlet end of the pressure measuring tube (4), and then put the magnetic plugging rod (5) on the other side. One end is fixedly connected with the annular tightening hoop (17) fixed at the end of the pressure measuring tube (4) through the drawing rod (7), so that the position of the magnetic blocking rod (5) and the adsorbed magnetic self-polymerizing slurry (6) is fixed; Step 2): Open the valve on the water inlet pipe (1), open the pressure relief valve (14) on the pressure relief pipe (13), continuously supply water to the water collecting tank (2), and the water enters the tester along the water outlet pipe (3). pressure pipe (4), and flow out from the pressure relief pipe (13) into the measuring cylinder (15), and adjust the pressure at the water inlet end of the pressure measuring pipe (4) through the pressure regulating valve (21); Step 3): Gradually adjust the pressure regulating valve (21) so that the pressure at the water inlet end of the pressure measuring tube (4) gradually increases, and measure the corresponding magnetic force level through the third electronic pressure gauge (20) at the water outlet end of the pressure measuring tube (4). The maximum water pressure that can be blocked by the magnetic plugging rod (5) after adsorbing a certain proportion of the magnetic self-aggregation slurry (6), that is, once the measured water plugging pressure drops, the plugging ends, and the maximum water pressure is the test condition Calculate the plugging pressure of the magnetic self-aggregation slurry under the pressure relief state, count the data of the flowmeter (23), the measuring cylinder (15) and the electronic scale (16) to obtain the water volume value of the pressure relief; Step 4): Measure the pull-out force data of the magnetic blocking rod (5) corresponding to the maximum water pressure state in step 3) by the tension meter (8), which is used for later test data analysis; Step 5): Replace the magnetic plugging rods (5) with different magnetic grades and configure the magnetic self-aggregation slurry (6) according to different proportions, repeat steps 1) to 4), and obtain the experimental data of water blocking and shear resistance under the pressure relief state. 2. A method for testing the pressure relief and water blocking shear performance of magnetic self-polymerizing slurry according to claim 1, characterized in that: one end of the water collecting tank (2) is connected to the water inlet pipe (1), and the other end passes through the water outlet pipe (3) Removably connected with the water inlet at one end of the pressure measuring tube (4), the position of the water outlet at the other end of the pressure measuring tube (4) is matched with one end of the magnetic plugging rod (5), and the magnetic plugging rod ( 5) The magnetic self-aggregation slurry (6) is magnetically adsorbed at the position where it is blocked with the pressure measuring tube (4). The ends are fixedly connected, and the pulling rod (7) is provided with a tension gauge (8). 3. A method for testing the pressure relief, water blocking and shear resistance performance of magnetic self-polymerizing slurry according to claim 2, characterized in that: one end of the water collecting tank (2) passes through a pressure supplement pipe (9) and a nitrogen supplementary pressure bottle ( 10) connection, the water outlet pipe (3) is also connected with the pressure reducing pipe (11), and the pressure reducing pipe (11) is provided with a pressure reducing valve (12). 4. A method for testing the pressure-relief, water-blocking and shear-resistance performance of magnetic self-polymerizing slurry according to claim 2, wherein the magnetic plugging rod (5) is hollow inside and is provided with a pressure relief pipe (13), A pressure relief valve (14) is provided on the pressure relief pipe (13). 5. A method for testing the pressure relief, water blocking and shear resistance of magnetic self-polymerizing slurry according to claim 4, characterized in that: the end of the pressure relief pipe (13) extends into the measuring cylinder (15), and the measuring cylinder (15) ) on the electronic scale (16), and a flowmeter (23) is set on the pressure relief pipe (13). 6. A method for testing the pressure relief and water blocking shear performance of magnetic self-polymerizing slurry according to claim 2, characterized in that: the other end of the magnetic blocking rod (5) passes through the drawing rod (7) and the pressure measuring tube (4) The annular clamp (17) fixed at the end is fixedly connected. 7. A method for testing the pressure relief and water blocking shear performance of magnetic self-polymerizing slurry according to claim 2, characterized in that: the water collecting tank (2) is provided with a first electronic pressure gauge (18), so The water outlet pipe (3) is provided with a second electronic pressure gauge (19), and the water outlet end of the pressure measurement pipe (4) is provided with a third electronic pressure gauge (20). 8. A method for testing the pressure relief, water blocking and shear resistance of magnetic self-polymerizing slurry according to claim 2, characterized in that: the water inlet end of the pressure measuring pipe (4) is further provided with a pressure regulating valve (21) and Fourth electronic manometer (22). 9 . The method for testing the pressure relief, water blocking and shear resistance of magnetic self-polymerizing slurry according to claim 2 , wherein the magnetic self-polymerizing slurry (6) is an oily epoxy resin magnetic self-polymerizing slurry or a water-based ring. 10 . Oxygen resin magnetic self-polymerization slurry, the oily epoxy resin magnetic self-polymerization slurry includes epoxy resin A glue, epoxy resin curing agent, fly ash and ferric oxide powder; the water-based epoxy resin magnetic self-polymerization slurry Including epoxy resin emulsion, epoxy resin curing agent, cement, water and ferric oxide powder.

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