Rock fracture repairing device and method based on active microorganism mud

Abstract

The invention discloses a rock fracture repairing device and method based on active microorganism mud, belongs to the technical field of rock fracture repairing, and aims at solving the technical problems that in the prior art, the period for repairing and reinforcing rock fractures based on an MICP technology is long, and the reinforcing effect is poor. The device comprises: a housing; the preparation assembly comprises a mixing cavity, a driving cavity, a stirring paddle and a driving motor I; an output shaft of the driving motor is connected with the stirring paddle, and the stirring paddle is arranged in the mixing cavity; the grouting assembly comprises a liquid feeding cavity, a grouting outlet, a spiral blade and a driving motor II; the spiral blade is arranged in the liquid feeding cavity and is connected with an output shaft of the driving motor II; and the liquid supply cavity is communicated with the mixing cavity through a liquid supply runner. The method can be better used for rock fracture repairing work under various conditions, the reinforcing effect is good, and the reinforcing construction period is short.

Description

Technical Field

[0001] The invention relates to the technical field of rock fissure repair, and in particular to a rock fissure repair device and a repair method based on active microbial mud. Background Art

[0002] With the development of society and the improvement of living standards, environmental pollution has gradually attracted people's attention. In particular, a series of environmental problems caused by the production and processing of traditional cement-based materials have become the current focus. Therefore, finding new environmentally friendly reinforcement materials has become a technical problem that needs to be solved urgently, and the microbial induced calcium carbonate precipitation (MICP) technology with calcium carbonate as the cementing material has become a current research hotspot.

[0003] There are many methods for repairing rock fissures based on MI CP technology, but most of them have obvious disadvantages. For example, the method of injecting bacterial solution and reaction liquid into the fissure for static reinforcement multiple times usually has a long reinforcement period; the method of continuously injecting bacterial solution and reaction liquid into rock fissures for reinforcement can greatly reduce the reinforcement period of MI CP, but this method has poor reinforcement effect when the fissure opening is large, and under the influence of gravity or other environmental factors, it will cause uneven calcium carbonate deposition in the fissure.

[0004] The rock cracks repaired using the above methods are not effective. Seeking a microbial repair method that is environmentally friendly, has a short reinforcement period, strong applicability and good repair effect has become the current research goal.

[0005] Therefore, there is an urgent need for a rock fissure repair device based on active microbial mud and a corresponding repair method. Summary of the invention

[0006] The purpose of the present invention is to provide a rock fissure repair device based on active microbial mud to solve the technical problems of long rock fissure repair and reinforcement period and poor reinforcement effect based on MICP technology in the prior art.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The present invention provides a rock fissure repairing device based on active microbial mud, comprising:

[0009] case;

[0010] A preparation component, the preparation component comprises a mixing chamber, a driving chamber, a stirring paddle and a driving motor; the output shaft of the driving motor is connected to the stirring paddle, and the stirring paddle is arranged in the mixing chamber;

[0011] A grouting component, the grouting component includes a liquid supply chamber, a grouting outlet, a spiral blade and a second drive motor; the spiral blade is arranged in the liquid supply chamber and connected to the output shaft of the second drive motor; the liquid supply chamber is connected to the mixing chamber through a liquid supply channel.

[0012] Optionally or preferably, the housing comprises an outer housing and an inner housing; a waste liquid collection assembly is provided between the outer housing and the inner housing;

[0013] The waste liquid collection assembly includes a waste liquid collection chamber, a liquid discharge pipe, a liquid discharge roller and a drive motor;

[0014] One end of the liquid discharge pipe is communicated with the mixing chamber, and the other end is communicated with the waste liquid collection chamber; the liquid discharge roller is connected to the output shaft of the driving motor three, and peristaltically squeezes the liquid discharge pipe.

[0015] Optionally or preferably, a pull-out baffle is provided at the upper end of the liquid supply pipeline, and the pull-out baffle is used to control the flow of the liquid supply pipeline;

[0016] A pull rod is connected to one side of the drawable baffle, and the pull rod is used to control the drawable baffle.

[0017] Optionally or preferably, the waste liquid collection chamber is connected to a discharge pipe, and a valve body is provided on the discharge pipe.

[0018] Optionally or preferably, it further comprises a cementing solution placement component, wherein the cementing solution placement component comprises a placement cavity, a cementing solution inlet and a cementing solution outlet pipe;

[0019] The cementing solution outlet pipe is provided with a valve body.

[0020] Optionally or preferably, a cover is provided on the upper end surface of the shell, and the cover is used to close the mixing chamber;

[0021] The side wall of the shell is also provided with a handle.

[0022] Optionally or preferably, a flow control structure is provided at the grouting outlet;

[0023] The flow control structure comprises an upper baffle, a lower baffle and a fixing member, and an output channel is formed between the upper baffle and the lower baffle;

[0024] The lower baffle is fixedly connected to the shell, and the upper baffle is slidably connected to the shell;

[0025] The shell body is provided with a thread groove, and the fixing member is connected with the thread groove and is used for fixing the upper baffle.

[0026] A rock fissure repair method based on active microbial mud comprises the following steps:

[0027] S1. Mix equal volumes of calcium chloride solution and urea solution and pour them into the placement cavity from the cementing solution inlet for later use;

[0028] S2. Close the drawer baffle, place one end of the drain pipe outside the mixing chamber, pour the bacterial solution, urea and calcium chloride into the mixing chamber, and install the cover;

[0029] S3, turn on the driving motor 1, start the stirring paddle to stir the mixture in the mixing chamber, stir for 12 hours, and then turn off the driving motor 1;

[0030] S4, after the mixture has been stationary for 5 hours, the cover is opened, one end of the drain pipe is placed on the upper clear liquid of the mixture, the drive motor three is turned on, the upper clear liquid is pumped into the waste liquid collection chamber, and then the drive motor three is turned off to obtain the prepared active microbial mud;

[0031] S5. Pull the pull rod to make the prepared active microbial mud flow into the liquid feeding chamber, and adjust the upper baffle and the lower baffle to make the opening of the output channel match the opening of the rock fracture;

[0032] S6, aligning the grouting outlet with the rock fissure, turning on the second drive motor, squeezing the active microbial mud into the rock fissure, and then turning off the second drive motor;

[0033] S7, opening the cementing solution outlet pipe, and pouring the cementing solution onto the surface of the rock fracture;

[0034] S8. After standing for 48 hours, the repair is completed.

[0035] Based on the above technical solution, the present invention can at least produce the following technical effects:

[0036] (1) The active microbial mud used in the present invention to repair rock fissures has the characteristics of one-time filling and repairing, which significantly shortens the repair time and simplifies the repair steps compared with other MIC repair methods; in addition, the calcium carbonate filling of the repaired rock fissures is more uniform, the filling degree is higher, and the shear strength of the fissures is significantly improved;

[0037] (2) The device for repairing rock fissures with active microbial mud provided by the present invention is easy to operate. The device integrates functional modules such as the preparation of active microbial mud, fissure grouting and cementing liquid storage, realizing a "one-stop" operation of fissure repair, significantly improving the repair efficiency and reducing unnecessary cumbersome steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the present invention;

[0039] Figure 2 is a top view of the first embodiment of the present invention;

[0040] Figure 3 yes Figure 2 Middle AA section;

[0041] Figure 4 is a side view of the first embodiment of the present invention;

[0042] Figure 5 yes Figure 4 Middle BB section;

[0043] Figure 6 is a schematic diagram of the connection structure between the liquid discharge roller and the liquid discharge pipe in the first embodiment of the present invention;

[0044] Figure 7 This is the result of direct shear test on active microbial mud to repair rock fracture specimens.

[0045] In the figure: 100, housing; 110, outer housing; 120, inner housing; 130, cover; 140, handle; 200, preparation component; 210, mixing chamber; 220, driving chamber; 230, stirring paddle; 240, driving motor 1;

[0046] 300, waste liquid collection assembly; 310, waste liquid collection chamber; 320, liquid discharge pipe; 330, liquid discharge roller; 340, drive motor three; 350, discharge pipe;

[0047] 400, cementing solution placement component; 410, placement cavity; 420, cementing solution inlet; 430, cementing solution outlet pipe;

[0048] 500, grouting assembly; 510, liquid supply chamber; 520, grouting outlet; 530, spiral blade; 521, upper baffle; 522, lower baffle; 523, fixing part; 540, driving motor 2; 550, liquid supply pipeline; 551, pull-out baffle; 552, pull rod. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work belong to the scope of protection of the present invention.

[0050] Embodiment 1

[0051] See also Figures 1 to 6A rock fissure repair device based on active microbial mud includes a shell 100, a preparation component 200, a waste liquid collection component 300, a cementing solution placement component 400 and a grouting component 500.

[0052] In this embodiment, the shell 100 includes an outer shell 110 and an inner shell 120; a waste liquid collection component 300 is arranged between the outer shell 110 and the inner shell 120; a removable top cover 130 is also arranged at the upper end of the shell 100 to avoid liquid splashing during stirring.

[0053] In this embodiment, the waste liquid collection assembly 300 includes a waste liquid collection chamber 310, a liquid discharge pipe 320, a liquid discharge roller 330 and a drive motor 340; wherein the waste liquid collection chamber 310 is connected to a discharge pipe 350, and a valve body is provided on the discharge pipe 350, and an operator can open and close the discharge pipe 350 through the valve body. One end of the liquid discharge pipe 320 is connected to the mixing chamber 210, and the other end is connected to the waste liquid collection chamber 310; the liquid discharge roller 330 is connected to the output shaft of the drive motor 340, and peristaltically squeezes the liquid discharge pipe 320.

[0054] In actual work, the drain pipe 320 is used to discharge the upper clear liquid in the mixing chamber 210 into the waste liquid collecting chamber 310. In the draining state, one end of the drain pipe 320 is connected to the waste liquid collecting chamber 310, and the other end extends into the mixing chamber 210; in the non-draining state, in order to prevent the drain pipe 320 from interfering with the stirring work in the mixing chamber 210, the part of the drain pipe 320 extending into the mixing chamber 210 can be placed outside the mixing chamber 210.

[0055] In this embodiment, the grouting assembly 500 includes a liquid supply chamber 510, a grouting outlet 520, a spiral blade 530 and a driving motor 540; the spiral blade 530 is arranged in the liquid supply chamber 510 and is connected to the output shaft of the driving motor 540; the liquid supply chamber 510 is connected to the mixing chamber 210 through the liquid supply channel 550.

[0056] In this embodiment, a pull-out baffle 551 is provided at the upper end of the liquid supply pipeline 550 , and the pull-out baffle 551 is used to control the flow of the liquid supply pipeline 550 ; a pull rod 552 is connected to one side of the pull-out baffle 551 , and the pull rod 552 is used to control the pull-out baffle 551 .

[0057] In this embodiment, the bonding solution placement component 400 includes a placement chamber 410, a bonding solution inlet 420 and a bonding solution outlet pipe 430; the placement chamber 410 and the driving chamber 220 are at the same level in the shell 100, and the placement chamber 410 and the driving chamber 220 are separated by a partition.

[0058] A valve body is provided on the cementing solution outlet pipe 430 .

[0059] In order to improve the adaptability of the device to rock fissures of different openings, in the present embodiment, a flow control structure is provided at the grouting outlet 520; the flow control structure comprises an upper baffle 521, a lower baffle 522 and a fixing member 523, and an output channel is formed between the upper baffle 521 and the lower baffle 522; the lower baffle 522 is fixedly connected to the shell 100, and the upper baffle 521 is slidably connected to the shell 100; a threaded groove is provided on the shell 100, and the fixing member 523 is connected to the threaded groove and is used to fix the upper baffle 521.

[0060] Embodiment 2:

[0061] In this embodiment, based on the rock fissure repairing device based on active microbial mud provided in Embodiment 1, a rock fissure repairing method based on active microbial mud is provided, including the following methods:

[0062] S1, mix 8 mol / L calcium chloride solution and 8 mol / L urea solution in equal volumes and pour them into the placement cavity 410 from the cementing solution inlet 420 for standby use;

[0063] S2, close the drawer baffle 551, place one end of the drain pipe 320 outside the mixing chamber 210, pour 1L of bacterial solution, 24g of analytical grade urea and 44.4g of analytical grade calcium chloride into the mixing chamber 210, and install the cover 130;

[0064] S3, turning on the driving motor 240, starting the stirring paddle 230 to stir the mixture in the mixing chamber 210, stirring for 12 hours, and then turning off the driving motor 240;

[0065] S4, after the mixture has been stationary for 5 hours, the cover 130 is opened, one end of the drain pipe 320 is placed on the upper clear liquid of the mixture, the drive motor 3 340 is turned on, the upper clear liquid is pumped to the waste liquid collection chamber 310, and then the drive motor 3 340 is turned off to obtain the prepared active microbial mud;

[0066] S5, pull the pull rod 552 to make the prepared active microbial mud flow into the liquid supply chamber 510, and adjust the upper baffle 521 and the lower baffle 522 to make the opening of the output channel match the opening of the rock fracture;

[0067] S6, aligning the grouting outlet 520 with the rock fissure, turning on the second drive motor 540, squeezing the active microbial mud into the rock fissure, and then turning off the second drive motor 540;

[0068] S7, opening the cementing solution outlet pipe 430, and pouring the cementing solution onto the surface of the rock fracture;

[0069] S8. After standing for 48 hours, the repair is completed.

[0070] See also Figure 7The results of direct shear test on the reinforced specimens are as follows: Figure 7 As shown in the figure, the axial pressure used is 1MPa. The cracks in the rock sample before reinforcement have been smoothed, and the shear strength is close to 0MPa.

[0071] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rock fissure repair device based on active microbial mud, characterized in that: include: Housing (100); A preparation component (200), the preparation component (200) comprising a mixing chamber (210), a driving chamber (220), a stirring paddle (230) and a driving motor (240); an output shaft of the driving motor (240) is connected to the stirring paddle (230), and the stirring paddle (240) is disposed in the mixing chamber (210); A grouting assembly (500), the grouting assembly (500) comprising a liquid supply chamber (510), a grouting outlet (520), a spiral blade (530) and a second drive motor (540); the spiral blade (530) is arranged in the liquid supply chamber (510) and is connected to the output shaft of the second drive motor (540); the liquid supply chamber (510) is connected to the mixing chamber (210) via a liquid supply channel (550).

2. The rock fissure repairing device based on active microbial mud according to claim 1 is characterized in that: The housing (100) comprises an outer housing (110) and an inner housing (120); a waste liquid collection assembly (300) is provided between the outer housing (110) and the inner housing (120); The waste liquid collection assembly (300) comprises a waste liquid collection chamber (310), a liquid discharge pipe (320), a liquid discharge roller (330) and a driving motor three (340); One end of the liquid discharge pipe (320) is in communication with the mixing chamber (210), and the other end is in communication with the waste liquid collection chamber (310); the liquid discharge roller (330) is connected to the output shaft of the driving motor three (340), and peristaltically squeezes the liquid discharge pipe (320).

3. The rock fissure repairing device based on active microbial mud according to claim 1 is characterized in that: A pull-out baffle (551) is provided at the upper end of the liquid supply pipeline (550), and the pull-out baffle (551) is used to control the flow of the liquid supply pipeline (550); A pull rod (552) is connected to one side of the drawable baffle (551), and the pull rod (552) is used to control the drawable baffle (551).

4. The rock fissure repairing device based on active microbial mud according to claim 1 is characterized in that: The waste liquid collection chamber (310) is connected to a discharge pipe (350), and a valve body is provided on the discharge pipe (350).

5. The rock fissure repairing device based on active microbial mud according to claim 1 is characterized in that: It also includes a cementing solution placement component (400), wherein the cementing solution placement component (400) includes a placement cavity (410), a cementing solution inlet (420), and a cementing solution outlet pipe (430); The cementing solution outlet pipe (430) is provided with a valve body.

6. The rock fissure repairing device based on active microbial mud according to claim 1 is characterized in that: The upper end surface of the shell (100) is provided with a cover body (130), and the cover body (130) is used to close the mixing chamber (210); The side wall of the housing (100) is also provided with a handle (140).

7. The rock fissure repairing device based on active microbial mud according to claim 2 is characterized in that: The grouting outlet (520) is provided with a flow control structure; The flow control structure comprises an upper baffle (521), a lower baffle (522) and a fixing member (523), and an output channel is formed between the upper baffle (521) and the lower baffle (522); The lower baffle (522) is fixedly connected to the housing (100), and the upper baffle (521) is slidably connected to the housing (100); The housing (100) is provided with a thread groove, and the fixing member (523) is connected to the thread groove and is used to fix the upper blocking piece (521).

8. A rock fissure repair method based on active microbial mud, characterized in that: The rock fissure repairing device based on active microbial mud according to any one of claims 1 to 7 comprises the following steps: S1, mixing equal volumes of calcium chloride solution and urea solution, and pouring the mixture into the placement cavity (410) from the cementing solution inlet (420) for later use; S2, close the drawer baffle (551), place one end of the drain pipe (320) outside the mixing chamber (210), pour the bacterial solution, urea and calcium chloride into the mixing chamber (210), and install the cover (130); S3, turning on the driving motor 1 (240), starting the stirring paddle (230) to stir the mixture in the mixing chamber (210), and after stirring for 12 hours, turning off the driving motor 1 (240); S4, after the mixture has been stationary for 5 hours, the cover (130) is opened, one end of the drain pipe (320) is placed on the upper clear liquid of the mixture, the drive motor three (340) is turned on, the upper clear liquid is pumped into the waste liquid collection chamber (310), and then the drive motor three (340) is turned off to obtain the prepared active microbial mud; S5, pulling the pull rod (552) to allow the prepared active microbial mud to flow into the liquid supply chamber (510), and adjusting the upper baffle (521) and the lower baffle (522) to make the opening of the output channel match the opening of the rock fissure; S6, aligning the grouting outlet (520) with the rock fissure, turning on the second drive motor (540), squeezing the active microbial mud into the rock fissure, and then turning off the second drive motor (540); S7, opening the cementing solution outlet pipe (430), and pouring the cementing solution onto the surface of the rock fracture; S8. After standing for 48 hours, the repair is completed.

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