CN218894638U - Intelligent recoverable hole sealing system for ground pulping and underground slurry storage - Google Patents

Abstract

The intelligent recoverable hole sealing system comprises a ground pulping and storing system, a main pulp conveying pipe, a main pulp returning pipe, an underground pulp storing and conveying system, an underground pulp injecting main pipe, an underground pulp returning main pipe and a rubber bag reusable hole packer; the liquid outlet of the ground pulping and storing system is connected with the liquid inlet of the underground pulping and storing system through a main pulping pipe, the liquid outlet of the underground pulping and storing system is connected with the liquid inlet of the rubber bag reusable hole packer through an underground grouting main pipe, and the rubber bag reusable hole packer is connected with the pulping and storing system through an underground pulping main pipe and a main pulping return pipe. The utility model realizes high intellectualization of grouting hole sealing by utilizing a control system, realizes accurate and free control of hole sealing pressure, always automatic pressure maintaining of drilling hole sealing, automatic recovery of hole sealing materials after the extraction is finished, and recycling of the hole sealing device, and has the advantages of simple operation, high degree of automation, low labor intensity of workers, cost saving and the like.

Description

Intelligent recoverable hole sealing system for ground pulping and underground slurry storage

Technical Field

The utility model belongs to the technical field of coal mine gas extraction, and particularly relates to an intelligent recoverable hole sealing system for ground pulping and underground slurry storage.

Background

The traditional gas pumping hole sealing process is characterized in that the hole sealing device is inserted after hole drilling and hole sealing are carried out, a worker adds hole sealing materials and water into a stirring barrel according to a certain proportion to be fully stirred to form slurry, the slurry is injected into the hole sealing device by a grouting pump, the pumping pipe is connected with a pumping pipe to carry out gas pumping after the slurry is solidified, the hole sealing process has the advantages of high transportation cost of the hole sealing materials, high labor intensity, complex operation, low success rate and larger influence by the operation level of the worker, and the slurry is easy to form gas leakage to influence the gas pumping concentration if the hole drilling is deformed under the influence of the mining after being solidified in the hole sealing device, and in addition, the hole sealing device and the hole sealing materials cannot be recycled and have higher cost.

Disclosure of Invention

The utility model provides an intelligent recoverable hole sealing system for ground pulping and underground slurry storage, which aims to solve the defects in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme: the intelligent recoverable hole sealing system comprises a ground pulping and storing system, a main pulp conveying pipe, a main pulp returning pipe, an underground pulp storing and conveying system, an underground pulp injecting main pipe, an underground pulp returning main pipe and a rubber bag reusable hole packer; the liquid outlet of the ground pulping and storing system is connected with the liquid inlet of the underground pulping and storing system through a main pulping pipe, the liquid outlet of the underground pulping and storing system is connected with the liquid inlet of the rubber bag reusable hole packer through an underground pulping main pipe, the liquid return port of the rubber bag reusable hole packer is connected with one port of the main pulping and storing system through an underground pulping main pipe, and the other port of the underground pulping main pipe is connected with the pulping return port of the ground pulping and storing system through the main pulping return pipe.

The ground pulping and slurry storage system comprises a storage bin, a stirring barrel and a belt conveyor, wherein the feeding end of the belt conveyor is positioned below the discharge hole of the storage bin, the top of the stirring barrel is provided with a feeding hole, the discharge end of the belt conveyor is connected with the feeding hole through a transfer guide plate, the top of the stirring barrel is provided with a first stirring motor, a main shaft of the first stirring motor is in transmission connection with a first stirrer arranged in the stirring barrel, the upper side part of the stirring barrel is connected with a water supply pipe, a water supply electromagnetic valve and a first flow sensor are arranged on the water supply pipe, the lower part of the inner wall of the stirring barrel is provided with a first density sensor and a viscosity sensor, and the upper part and the lower part of the inner wall of the stirring barrel are respectively provided with a first liquid level sensor.

The underground slurry storage and conveying system comprises a slurry storage barrel, a second stirring motor is arranged at the top of the slurry storage barrel, a main shaft of the second stirring motor is in transmission connection with a second stirrer arranged in the slurry storage barrel, two ends of a main slurry conveying pipe are respectively connected with the lower side part of the stirring barrel and the side part of the slurry storage barrel, a ground slurry conveying pump station close to the stirring barrel and an underground slurry conveying pump station close to the slurry storage barrel are arranged on the main slurry conveying pipe, a first electromagnetic valve arranged between the stirring barrel and the ground slurry conveying pump station is arranged on the main slurry conveying pipe, a second electromagnetic valve and a third electromagnetic valve are respectively arranged at a liquid inlet and a liquid outlet of the underground slurry conveying pump station on the main slurry conveying pipe, a second density sensor is arranged at the lower part of the inner wall of the slurry storage barrel, and a second liquid level sensor is arranged at the upper part and the lower part of the inner wall of the slurry storage barrel.

The underground roadway is provided with a plurality of drilling holes, wherein the drilling holes are uniformly and alternately arranged along the length direction of the roadway, and each group of drilling holes is internally provided with a rubber bag reusable hole packer; each rubber bag reusable hole packer comprises a first rubber bag, a second rubber bag, a grouting pipe in the bag and a grouting pipe between the bags, wherein a drainage pipe is inserted into the central holes of the first rubber bag and the second rubber bag, the first rubber bag is positioned below the second rubber bag, the grouting pipe in the bag sequentially penetrates through the first rubber bag and the second rubber bag from bottom to top, the upper end of the grouting pipe in the bag is plugged, a first grouting hole positioned in the first rubber bag and a second grouting hole positioned in the second rubber bag are arranged on the grouting pipe in the bag, and the upper port of the grouting pipe between the bags penetrates through the first rubber bag from bottom to top and then stretches into the space between the first rubber bag and the second rubber bag;

the lower port of the grouting pipe in the bag is connected with a first three-way pipe, the lower part of the grouting pipe in the bag is provided with a first pressure sensor and a second flow sensor, a second interface of the first three-way pipe is connected with an underground grouting main pipe through a first grouting hose, a third interface of the first three-way pipe is connected with an underground grouting main pipe through a first grouting hose, a second interface of the first three-way pipe is provided with a fourth electromagnetic valve, and a third interface of the first three-way pipe is provided with a fifth electromagnetic valve;

the lower port of the grouting pipe between the bags is connected with a second three-way pipe, the lower part of the grouting pipe between the bags is provided with a second pressure sensor and a third flow sensor, a second interface of the second three-way pipe is connected with an underground grouting main pipe through a second grouting hose, a third interface of the second three-way pipe is connected with an underground grouting main pipe through a second grouting hose, a sixth electromagnetic valve is arranged on the second interface of the second three-way pipe, and a seventh electromagnetic valve is arranged on the third interface of the second three-way pipe.

The inlet end of the underground grouting main pipe is connected with the lower side part of the slurry storage barrel, and the underground grouting main pipe is sequentially provided with an eighth electromagnetic valve, an underground grouting pump station, a fourth flow sensor, a ninth electromagnetic valve and a third pressure sensor along the slurry flow direction.

The outlet end of the underground slurry returning main pipe is connected with a third three-way pipe, a fourth pressure sensor, a tenth electromagnetic valve, a fifth flow sensor and an underground slurry returning pump station are sequentially arranged on the underground slurry returning main pipe along the slurry flow direction, a second interface of the third three-way pipe is connected with the upper side part of the slurry storage barrel, an eleventh electromagnetic valve is arranged on a second interface of the third three-way pipe, two ends of the main slurry returning pipe are respectively connected with a third interface of the third three-way pipe and the upper side part of the stirring barrel, a twelfth electromagnetic valve is arranged on a third interface of the third three-way pipe, and a thirteenth electromagnetic valve close to the stirring barrel and a ground slurry returning pump station are arranged on the main slurry returning pipe.

By adopting the technical scheme, the utility model has the following technical effects:

1. the control system comprises a main control PLC controller, an underground PLC controller and an upper computer, wherein the main control PLC controller is mainly responsible for controlling a ground pulping device, a first stirring motor, a ground pulp conveying pump station, a ground pulp returning pump station, an electromagnetic valve and the like to perform corresponding actions according to pulping, pulp storage and pulp conveying requirements, flow sensors, density sensors, viscosity sensors, information fed back by a liquid level sensor, displaying relevant information on a display screen of the upper computer, adjusting key data such as pulp preparation quantity, pulp conveying quantity, pulp storage quantity and the like according to requirements, displaying key data information of the underground pulp storage and conveying system through real-time communication with the underground pulp storage and conveying system through a network, automatically or manually controlling the underground pulp storage and conveying system, and warning and prompting the drilling, underground pulp storage and conveying system. The upper computer is internally provided with configuration software, can store related data of control units such as a ground slurry storage and preparation system, an underground slurry storage and conveying system and the like, and can also correct related parameters and control an underground executing mechanism to execute response actions. The underground PLC is used for controlling the underground slurry storage and conveying system slurry storage and conveying requirements, the flow sensor, the density sensor, the liquid level sensor, the pressure sensor, the information fed back by the flow sensor and the second stirring motor, the underground slurry conveying pump station, the underground slurry returning pump station, the electromagnetic valve and the like to perform corresponding actions.

2. When pulping, the main control PLC controller controls the water injection quantity of the water supply pipe and the blanking quantity of the stock bin according to the pulping quantity and the pulping concentration. The density sensor and the viscosity sensor are arranged at the corresponding positions of the stirring barrel and are used for measuring viscosity and density information of slurry in real time and transmitting the viscosity and density information to the main control PLC, and the automatic feeding device adds a certain amount of slurry into the stirring barrel filled with water according to the slurry amount and density information set by the main control PLC.

3. The tunnel is internally provided with a touch display screen for monitoring the reusable hole packer of each rubber bag, the touch display screen displays various information of holes drilled in the group, including drilling numbers, pressure values in the rubber bags, pressure values in the middle section, grouting amount of the rubber bag section and grouting amount of the middle section, the flow sensor, the pressure sensor and the electromagnetic valve on the three-way pipe are connected with the touch display screen through signal control lines, the electromagnetic valve can be manually or automatically controlled according to the pressure and flow information, the rubber bags in the holes in the group and slurry injection amount information and pressure information in the middle section of the two rubber bags can be collected, the pressure loss drilling is prompted and warned, and various information is transmitted to the underground PLC.

4. The concrete process of pulping on the ground comprises the following steps: according to the preset slurry quantity, a main control PLC controller sends out an instruction to a water supply pump connected with a water supply pipe inlet, meanwhile, a belt conveyor, a first stirring motor and a screw feeder at the lower part of a feed bin are all started, a water supply electromagnetic valve is opened, a certain amount of water is injected into a stirring barrel, the water injection is stopped according to the information of a first flow sensor, the screw feeder quantitatively conveys solid materials to the belt conveyor, the belt conveyor conveys the solid materials to the stirring barrel, the first stirring motor drives the first stirrer to start stirring, materials and water are fully mixed and stirred uniformly until a preset proportion is reached, the hole sealing materials have good fluidity and certain viscosity, a first density sensor and a viscosity sensor are used for measuring viscosity and density information of slurry in real time and transmitting the viscosity and density information to the main control PLC controller, and the first stirring motor stops working after the slurry is qualified.

The slurry storage container can be arranged on the ground, and the qualified hole sealing material prepared in the stirring barrel is stored in the slurry storage container, so that the operation of preparing the hole sealing material can be continuously carried out in the stirring barrel. Or directly into a downhole slurry storage system: the main control PLC controller opens a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve on the main slurry conveying pipe, a ground slurry conveying pump station and an underground slurry conveying pump station are started, slurry is injected into a slurry storage barrel of an underground slurry storage and conveying system through the main slurry conveying pipe, when the slurry reaches a preset capacity, the main control PLC controller sends an instruction to close the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve on the main slurry conveying pipe, and when the slurry in the underground slurry storage device is lower than a second liquid level sensor, namely less than a certain preset value, the ground slurry making slurry storage system can automatically feed the slurry into the underground slurry storage barrel according to the process.

5. Delivering the slurry to a hole sealing site: the eighth electromagnetic valve and the ninth electromagnetic valve are opened, the underground grouting pump station is started, the slurry is conveyed to a hole sealing place through the underground grouting main pipe, the underground PLC controller controls the eighth electromagnetic valve and the ninth electromagnetic valve on the underground grouting main pipe to realize pipeline on-off through the pressure signal value sent by the third pressure sensor, and certain grouting pressure is always kept in the underground grouting main pipe.

6. Grouting and hole sealing: according to the number of the groups of the drilled holes, the reusable hole packer of the rubber bags with reserved corresponding interfaces is fixed on one side of a roadway in parallel, the reusable hole packer of the rubber bags is connected with an underground grouting main pipe and an underground grouting main pipe through a grouting hose and a grouting hose respectively, the reusable hole packer of the rubber bags is inserted into a preset hole sealing depth of the drilled holes, a hole sealing command is sent out through an underground PLC, at the moment, a fourth electromagnetic valve on the first three-way pipe is opened, the grouting pipe in the bags starts to inject slurry into the two first rubber bags and the second rubber bags, when the first pressure sensor monitors to reach a set pressure value, the fourth electromagnetic valve is closed, grouting is stopped, then a sixth electromagnetic valve on the second three-way pipe is opened, the slurry starts to inject slurry into the middle section between the first rubber bags and the second rubber bags through the grouting pipe between the bags until the second pressure sensor monitors to reach the preset grouting pressure value, the underground PLC sends out a command for closing the sixth electromagnetic valve, grouting is stopped, and hole sealing is completed. And the hole sealing operation of the other drilling holes is completed by the same operation process.

7. Drilling dynamic pressure maintaining and pumping process: taking a single drilling hole as an example for explanation, when the deformation section of the drilling hole is enlarged so that the pressure in the first rubber bag and/or the second rubber bag is reduced and smaller than the preset constant pressure, the first pressure sensor transmits pressure monitoring data to the underground PLC controller, the underground PLC controller instructs the fourth electromagnetic valve to open, the grouting pipe in the bag starts to supplement grouting liquid into the two first rubber bags and the second rubber bags, and when the first pressure sensor monitors that the set pressure value is reached, the fourth electromagnetic valve is closed to stop grouting. Similarly, when the pressure is reduced due to continuous penetration of slurry into the cracks of the middle section between the first rubber bag and the second rubber bag due to the occurrence of cracks around the drilling holes, a sixth electromagnetic valve connected with a grouting pipe between the bags is opened, slurry starts to be supplemented into the middle section between the first rubber bag and the second rubber bag through the grouting pipe between the bags until the second pressure sensor monitors that a preset grouting pressure value is reached, and the downhole PLC controller sends a command for closing the sixth electromagnetic valve to stop slurry supplementing.

When the effective diameter of the borehole is deformed and reduced due to the influence of mining, the pressure born by the rubber bag and the middle section is increased, when the pressure is larger than a set pressure value, the first pressure sensor and the second pressure sensor send pressure change information to the underground PLC, the underground PLC sends opening instruction information to the seventh electromagnetic valve, the tenth electromagnetic valve and the eleventh electromagnetic valve, slurry in the middle section of the borehole enters the second slurry returning hose through the third interfaces (slurry returning ports) of the grouting pipe and the second three-way pipe between the bags, flows into the underground slurry returning main pipe, finally flows into the slurry storing barrel of the roadway, and after the value monitored by the second pressure sensor reaches the set value, the seventh electromagnetic valve, the tenth electromagnetic valve and the eleventh electromagnetic valve are closed. Then, the downhole PLC controller sends opening instruction information to the fifth electromagnetic valve, the tenth electromagnetic valve and the eleventh electromagnetic valve, slurry in the first rubber bag and the second rubber bag firstly enters the first slurry returning hose through a third interface (slurry returning port) of the grouting pipe and the first three-way pipe in the bag, flows into the downhole slurry returning main pipe, finally flows into the slurry storage barrel of the roadway, and after the value monitored by the first pressure sensor reaches a set value, the fifth electromagnetic valve, the tenth electromagnetic valve and the eleventh electromagnetic valve are closed.

The slurry in the middle section is recovered firstly, and then the slurry in the first rubber bag and the slurry in the second rubber bag are recovered, so that the condition that slurry leakage is caused by high pressure in the middle section due to pressure reduction of the rubber bags are avoided in the sequence, and the condition that the rubber bags are not broken due to the increase of the deformation pressure of drilling holes is ensured.

8. Recycling of the reusable hole packer and slurry of the rubber bag: when the hole packer is required to be recovered after the drilling extraction at a certain position meets the standard, the underground PLC controller firstly sends opening instruction information to the seventh electromagnetic valve, the tenth electromagnetic valve, the twelfth electromagnetic valve and the thirteenth electromagnetic valve, slurry at the middle section of the drilling enters the second slurry return hose through a third interface (slurry return port) of the grouting pipe between the bags and the second three-way pipe, flows into the underground slurry return main pipe, flows into the main slurry return pipe through the third three-way pipe, flows into the stirring barrel on the ground under the action of the ground slurry return pump station and the underground slurry return pump station, and is closed after the value monitored by the second pressure sensor reaches a set value. Then, the underground PLC controller firstly sends opening instruction information to the fifth electromagnetic valve, the tenth electromagnetic valve, the twelfth electromagnetic valve and the thirteenth electromagnetic valve, slurry in the first rubber bag and the second rubber bag firstly enters the first slurry returning hose through a third interface (slurry returning port) of the grouting pipe and the first three-way pipe in the bag, flows into the underground slurry returning main pipe, flows into the main slurry returning pipe through the third three-way pipe, finally flows into the stirring barrel on the ground under the action of the ground slurry returning pump station and the underground slurry returning pump station, and the fifth electromagnetic valve, the tenth electromagnetic valve, the twelfth electromagnetic valve and the thirteenth electromagnetic valve are closed after the value monitored by the first pressure sensor reaches a set value.

9. Alarming and disposing of the decompression of the rubber bag: when the rubber bag is damaged, the pressure monitored by the first pressure sensor is suddenly reduced due to instantaneous leakage, the rubber bag can not be maintained by the filling slurry, or the pressure loss phenomenon occurs in a short time after the pressure rises, the system stops continuously filling the slurry into the rubber bag, prevents the slurry from rushing into a drill hole or a roadway in a large amount, gives out an audible and visual alarm to prompt that the rubber bag in the drill hole is subjected to pressure loss and damage, at the moment, the rubber bag in the drill hole can be firstly recovered, and the normal pumping of the drill hole can be ensured by carrying out hole sealing operation after the damaged rubber bag is replaced.

10. Alarm and treatment of middle section decompression: when a large number of through cracks appear in the middle section of the drill hole due to the mining influence, so that the slurry loss of the middle section of the drill hole is serious, the pressure monitored by the second pressure sensor is suddenly reduced, the middle section can not be maintained by the filling slurry, or the pressure loss phenomenon appears in a short time after the pressure rises, the system can stop continuously filling the slurry into the middle section of the drill hole, so that the slurry is prevented from rushing into the drill hole or a roadway in a large amount, an audible and visual alarm is given out, the middle section of the drill hole is prompted to lose pressure, the gas concentration in a single hole of the drill hole can be measured at the moment, if Shan Kongna gas concentration does not obviously reduce, the gas concentration can not be treated, if the gas concentration of the drill hole is excessively reduced compared with the prior art, the hole sealing device can be recycled, the hole sealing position of the hole sealing device or the density and the viscosity of the hole sealing slurry of the middle section can be adjusted, and the hole sealing is carried out again. If the pressure is difficult to maintain, the serious larger cracks around the drilling hole are proved to be difficult to block, and the drilling hole can be closed, so that the integral reduction of the gas concentration of the pumping pipeline caused by gas leakage of the drilling hole is avoided.

11. The flexible hole sealing dynamic pressure maintaining hole sealing of drilling guarantees that whole drilling is in a stable pressurize pumping state all the time, has stopped the gas leakage that causes because drilling volume grow and the broken pumping drilling inefficacy phenomenon that arouses of drilling volume diminish extrusion pumping pipe after traditional hole sealing material solidifies, has ensured the safe high efficiency of pumping.

In summary, the utility model performs pulping on the ground, conveys the pulp to underground storage, realizes high intellectualization of grouting hole sealing by using a control system, realizes accurate and free control of hole sealing pressure, always automatic pressure maintaining of drilling hole sealing, automatic recovery of hole sealing materials after the pumping is finished, and recycling of hole sealing devices.

Drawings

FIG. 1 is a schematic diagram of the connection structure between a ground pulping and storing system and a downhole storing and conveying system in the utility model;

FIG. 2 is a schematic view of the reusable hole packer for rubber bags in the present utility model;

FIG. 3 is an axial cross-sectional view of the two rubber bladders of FIG. 2;

FIG. 4 is a schematic view of the arrangement of the reusable hole packer of the rubber bag in the through-layer borehole along the length direction of the roadway in the present utility model;

FIG. 5 is a schematic view of the arrangement of the rubber bag reusable hole packer in the through-layer borehole along the roadway width direction in the present utility model;

fig. 6 is a schematic view of the arrangement of the reusable hole sealer for rubber bags in the longitudinal direction of the roadway in the bedding drill hole in the present utility model.

Detailed Description

1-6, the intelligent recoverable hole sealing system for ground pulping and underground pulp storage comprises a ground pulping and pulp storage system, a main pulp conveying pipe 1, a main pulp returning pipe 2, an underground pulp storage and conveying system, an underground pulp injecting main pipe 3, an underground pulp returning main pipe 4 and a rubber bag reusable hole packer 5; the liquid outlet of ground pulping and storing system is connected with the liquid inlet of underground pulping and storing and conveying system through main pulp conveying pipe 1, the liquid outlet of underground pulping and storing and conveying system is connected with the liquid inlet of rubber bag reusable hole packer 5 through main underground grouting pipe 3, the liquid return port of rubber bag reusable hole packer 5 is connected with one port of main pulp return pipe 2 through main underground pulp return pipe 4, and the other port of main underground pulp return pipe 4 is connected with the pulp return port of ground pulping and storing system through main pulp return pipe 2.

The ground pulping and slurry storage system comprises a storage bin 6, a stirring barrel 7 and a belt conveyor 8, wherein the feeding end of the belt conveyor 8 is positioned below a discharge hole of the storage bin 6, a feeding hole is formed in the top of the stirring barrel 7, the discharge end of the belt conveyor 8 is connected with the feeding hole through a transfer guide plate 9, a first stirring motor 10 is arranged at the top of the stirring barrel 7, a first stirrer 11 arranged in the stirring barrel 7 is connected with a main shaft of the first stirring motor 10 in a transmission manner, a water supply pipe 12 is connected to the upper side part of the stirring barrel 7, a water supply electromagnetic valve 13 and a first flow sensor 14 are arranged on the water supply pipe 12, a first density sensor 15 and a viscosity sensor 16 are arranged on the lower part of the inner wall of the stirring barrel 7, and a first liquid level sensor 17 is arranged on the upper part and the lower part of the inner wall of the stirring barrel 7.

The underground slurry storage and conveying system comprises a slurry storage barrel 18, a second stirring motor 19 is arranged at the top of the slurry storage barrel 18, a second stirrer 20 arranged in the slurry storage barrel 18 is connected with a main shaft of the second stirring motor 19 in a transmission manner, two ports of a main slurry conveying pipe 1 are respectively connected with the lower side part of the stirring barrel 7 and the side part of the slurry storage barrel 18, a ground slurry conveying pump station 21 adjacent to the stirring barrel 7 and an underground slurry conveying pump station 22 adjacent to the slurry storage barrel 18 are arranged on the main slurry conveying pipe 1, a first electromagnetic valve 23 positioned between the stirring barrel 7 and the ground slurry conveying pump station 21 is arranged on the main slurry conveying pipe 1, a second electromagnetic valve 24 and a third electromagnetic valve 25 are respectively arranged at a liquid inlet and a liquid outlet of the underground slurry conveying pump station 22, a second density sensor 26 is arranged at the lower part of the inner wall of the slurry storage barrel 18, and a second liquid level sensor 27 is arranged at the upper part and the lower part of the inner wall of the slurry storage barrel 18.

The underground roadway 28 is provided with a plurality of drilled holes 29, the drilled holes 29 are gas extraction drilled holes obliquely upwards, wherein a group of drilled holes are uniformly arranged at intervals along the length direction of the roadway 28, and each group of drilled holes is internally provided with a rubber bag reusable hole packer 5; each rubber bag reusable hole packer 5 comprises a first rubber bag 30, a second rubber bag 31, an intra-bag grouting pipe 32 and an inter-bag grouting pipe 33, wherein a pumping pipe 34 is inserted into the central holes of the first rubber bag 30 and the second rubber bag 31, the first rubber bag 30 is positioned below the second rubber bag 31, the intra-bag grouting pipe 32 sequentially penetrates through the first rubber bag 30 and the second rubber bag 31 from bottom to top, the upper end of the intra-bag grouting pipe 32 is plugged, a first grouting hole 35 positioned in the first rubber bag 30 and a second grouting hole 36 positioned in the second rubber bag 31 are formed in the intra-bag grouting pipe 32, and the upper port of the inter-bag grouting pipe 33 penetrates through the first rubber bag 30 from bottom to top and then stretches into between the first rubber bag 30 and the second rubber bag 31;

the lower port of the grouting pipe 32 in the bag is connected with a first three-way pipe 64, the lower part of the grouting pipe 32 in the bag is provided with a first pressure sensor 37 and a second flow sensor 38, a second interface of the first three-way pipe 64 is connected with the main underground grouting pipe 3 through a first grouting hose 39, a third interface of the first three-way pipe 64 is connected with the main underground grouting pipe 4 through a first grouting hose 40, a second interface of the first three-way pipe 64 is provided with a fourth electromagnetic valve 41, and a third interface of the first three-way pipe 64 is provided with a fifth electromagnetic valve 42;

the lower port of the grouting pipe 33 between the bags is connected with a second three-way pipe 43, the lower part of the grouting pipe 33 between the bags is provided with a second pressure sensor 44 and a third flow sensor 45, a second interface of the second three-way pipe 43 is connected with the underground grouting main pipe 3 through a second grouting hose 46, a third interface of the second three-way pipe 43 is connected with the underground grouting main pipe 4 through a second grouting hose 47, a sixth electromagnetic valve 48 is arranged on the second interface of the second three-way pipe 43, and a seventh electromagnetic valve 49 is arranged on the third interface of the second three-way pipe 43.

The inlet end of the main underground grouting pipe 3 is connected with the lower side part of the slurry storage barrel 18, and the main underground grouting pipe 3 is sequentially provided with an eighth electromagnetic valve 50, an underground grouting pump station 51, a fourth flow sensor 52, a ninth electromagnetic valve 53 and a third pressure sensor 54 along the slurry flow direction.

The outlet end of the underground slurry return main pipe 4 is connected with a third three-way pipe 55, the underground slurry return main pipe 4 is sequentially provided with a fourth pressure sensor 56, a tenth electromagnetic valve 57, a fifth flow sensor 58 and an underground slurry return pump station 59 along the slurry flow direction, a second interface of the third three-way pipe 55 is connected with the upper side part of the slurry storage barrel 18, an eleventh electromagnetic valve 60 is arranged on the second interface of the third three-way pipe 55, two ends of the main slurry return pipe 2 are respectively connected with a third interface of the third three-way pipe 55 and the upper side part of the stirring barrel 7, a twelfth electromagnetic valve 61 is arranged on the third interface of the third three-way pipe 55, and a thirteenth electromagnetic valve 62 and a ground slurry return pump station 63 which are close to the stirring barrel 7 are arranged on the main slurry return pipe 2.

According to the above embodiment, the embodiment of drilling in the bedding is consistent with the scheme of drilling in the bedding, and the concrete effect is shown in fig. 6 at different construction sites and arrangement modes.

The working principle of the utility model has the following technical effects:

1. the control system comprises a main control PLC controller, an underground PLC controller and an upper computer, wherein the main control PLC controller is mainly responsible for controlling a ground pulping device, a first stirring motor 10, a ground pulp conveying pump station 21, a ground pulp return pump station 63, an electromagnetic valve and the like to perform corresponding actions according to pulping, pulp storage, pulp conveying requirements, flow sensors, a density sensor, a viscosity sensor 16, information fed back by a liquid level sensor, displaying related information on a display screen of the upper computer, adjusting key data such as pulping quantity, pulp conveying quantity, pulp storage quantity and the like according to requirements, displaying key data information of the underground pulp storage and conveying system through real-time communication with the underground pulp storage and conveying system through a network, automatically or manually controlling the underground pulp storage and conveying system, and performing early warning prompt on warning information of a drilling hole, the underground pulp storage and conveying system. The upper computer is internally provided with configuration software, can store related data of control units such as a ground slurry storage and preparation system, an underground slurry storage and conveying system and the like, and can also correct related parameters and control an underground executing mechanism to execute response actions. The downhole PLC is used for controlling the downhole slurry storage and conveying system slurry storage and conveying requirements, the flow sensor, the density sensor, the liquid level sensor, the pressure sensor, the information fed back by the flow sensor and controlling the second stirring motor 19, the downhole slurry conveying pump station 22, the downhole slurry returning pump station 59, the electromagnetic valve and the like to perform corresponding actions.

2. When pulping, the main control PLC controller controls the water injection quantity of the water supply pipe 12 and the blanking quantity of the stock bin according to the pulping quantity and the pulping concentration. The density sensor and the viscosity sensor 16 are arranged at the corresponding positions of the stirring barrel 7 and are used for measuring viscosity and density information of slurry in real time and transmitting the viscosity and density information to the main control PLC, and the automatic feeding device adds a certain amount of slurry into the stirring barrel 7 filled with water according to the slurry amount and density information set by the main control PLC.

3. The roadway 28 is internally provided with a touch display screen for monitoring the reusable hole packer 5 of each rubber bag, various information of holes drilled in the group is displayed on the touch display screen, including drilling numbers, pressure values in the rubber bags, pressure values in the middle section, grouting amount of the rubber bag section and grouting amount of the middle section, a flow sensor, a pressure sensor and an electromagnetic valve on a three-way pipe are connected with the touch display screen through signal control lines, the electromagnetic valve can be manually or automatically controlled according to the pressure and flow information, the rubber bags in the various holes in the group and slurry injection amount information and pressure information in the middle section of the two rubber bags can be collected, the pressure-losing holes are prompted and warned, and various information is transmitted to a downhole PLC.

4. The concrete process of pulping on the ground comprises the following steps: according to the preset slurry amount, the main control PLC controller sends an instruction to a water supply pump connected with an inlet of a water supply pipe 12, meanwhile, the belt conveyor 8, a first stirring motor and a screw feeder at the lower part of a storage bin 6 are all started, a water supply electromagnetic valve 13 is opened, a certain amount of water is injected into the stirring barrel 7, the water injection is stopped when the preset water amount is judged to be reached according to the information of a first flow sensor 14, the screw feeder quantitatively conveys solid materials onto the belt conveyor 8, the belt conveyor 8 conveys the solid materials into the stirring barrel 7, the first stirring motor drives a first stirrer 11 to start stirring, materials and water are fully mixed and stirred uniformly until a preset proportion is reached, the hole sealing materials have good fluidity and certain viscosity, a first density sensor 15 and a viscosity sensor 16 are used for measuring the viscosity and the density information of slurry in real time and are transmitted to the main control PLC controller, and the first stirring motor stops working after the slurry is qualified.

A slurry storage container can be arranged on the ground, and the qualified hole sealing materials prepared in the stirring barrel 7 are stored in the slurry storage container, so that the operation of preparing the hole sealing materials can be continued in the stirring barrel 7. Or directly into a downhole slurry storage system: the main control PLC controller opens the first electromagnetic valve 23, the second electromagnetic valve 24 and the third electromagnetic valve 25 on the main slurry conveying pipe 1, starts the ground slurry conveying pump station 21 and the underground slurry conveying pump station 22, and when slurry is injected into the slurry storage barrel 18 of the underground slurry storage and conveying system through the main slurry conveying pipe 1 and reaches the preset capacity, the main control PLC controller sends out an instruction to close the first electromagnetic valve 23, the second electromagnetic valve 24 and the third electromagnetic valve 25 on the main slurry conveying pipe 1, and when the slurry in the underground slurry storage device is lower than the second liquid level sensor 27, namely less than a certain preset value, the ground slurry preparation and storage system can automatically feed the slurry into the underground slurry storage barrel 18 according to the process.

5. Delivering the slurry to a hole sealing site: the eighth electromagnetic valve 50 and the ninth electromagnetic valve 53 are opened, the underground grouting pump station 51 is started, the slurry is conveyed to a hole sealing place through the underground grouting main pipe 3, the underground PLC controller sends out a pressure signal value through the third pressure sensor 54 to control the eighth electromagnetic valve 50 and the ninth electromagnetic valve 53 on the underground grouting main pipe 3 to realize pipeline on-off, and certain grouting pressure is always kept in the underground grouting main pipe 3.

6. Grouting and hole sealing: according to the number of the groups of the drilled holes, the reusable hole packer 5 with reserved corresponding interfaces is fixed on one side of the roadway 28 in parallel, the reusable hole packer 5 is well connected with the underground grouting main pipe 3 and the underground grouting main pipe 4 through a grouting hose and a grouting hose respectively, the reusable hole packer 5 is inserted into a preset hole sealing depth of the drilled holes, a hole sealing instruction is sent out through the underground PLC, at the moment, the fourth electromagnetic valve 41 on the first three-way pipe 64 is opened, the grouting pipe 32 in the bag starts to inject slurry into the two first rubber bags 30 and the second rubber bags 31, the fourth electromagnetic valve 41 is closed when the first pressure sensor 37 monitors to reach a set pressure value, grouting is stopped, then the sixth electromagnetic valve 48 on the second three-way pipe 43 is opened, grouting is started to the middle section between the first rubber bags 30 and the second rubber bags 31 through the inter-bag grouting pipe 33 until the second pressure sensor 44 monitors to reach the preset grouting pressure value, the underground PLC sends out an instruction to close the sixth electromagnetic valve 48, and grouting is stopped, and one hole sealing is finished. And the hole sealing operation of the other drilling holes is completed by the same operation process.

7. Drilling dynamic pressure maintaining and pumping process: taking a single drilling hole as an example, when the deformation section of the drilling hole becomes larger so that the pressure in the first rubber bag 30 and/or the second rubber bag 31 becomes smaller and smaller than the preset constant pressure, the first pressure sensor 37 transmits pressure monitoring data to the downhole PLC controller, the downhole PLC controller instructs the fourth electromagnetic valve 41 to open, the grouting pipe 32 in the bag starts to fill slurry into the two first rubber bags 30 and the second rubber bag 31, and when the first pressure sensor 37 monitors that the set pressure value is reached, the fourth electromagnetic valve 41 is closed and slurry filling is stopped. Similarly, when the pressure of the middle section between the first rubber bag 30 and the second rubber bag 31 is reduced due to continuous penetration of slurry into the cracks caused by the occurrence of cracks around the drill holes, the sixth electromagnetic valve 48 on the connection of the grouting pipes 33 between the bags is opened, slurry starts to be supplemented into the middle section between the first rubber bag 30 and the second rubber bag 31 through the grouting pipes 33 between the bags until the second pressure sensor 44 monitors that the preset grouting pressure value is reached, and the downhole PLC controller sends out an instruction of closing the sixth electromagnetic valve 48 to stop slurry supplementation.

When the effective diameter of the borehole is reduced due to the deformation of the borehole caused by mining, the pressure born by the rubber bag and the middle section is increased, when the pressure is larger than a set pressure value, the first pressure sensor 37 and the second pressure sensor send pressure change information to the underground PLC controller, the underground PLC controller sends opening instruction information to the seventh electromagnetic valve 49, the tenth electromagnetic valve 57 and the eleventh electromagnetic valve 60, slurry in the middle section of the borehole firstly enters the second slurry return hose 47 through the third interfaces (slurry return ports) of the grouting pipe 33 between the bags and the second three-way pipe 43, flows into the underground slurry return main pipe 4 and finally flows into the slurry storage barrel 18 of the roadway 28, and after the value monitored by the second pressure sensor 44 reaches the set value, the seventh electromagnetic valve 49, the tenth electromagnetic valve 57 and the eleventh electromagnetic valve 60 are closed. Then, the downhole PLC controller sends opening instruction information to the fifth electromagnetic valve 42, the tenth electromagnetic valve 57 and the eleventh electromagnetic valve 60, so that the slurry in the first rubber bag 30 and the second rubber bag 31 enters the first slurry return hose 40 through the third interfaces (slurry return ports) of the grouting pipe 32 and the first three-way pipe 64 in the bag, flows into the downhole slurry return main pipe 4, finally flows into the slurry storage barrel 18 of the roadway 28, and after the value monitored by the first pressure sensor 37 reaches the set value, the fifth electromagnetic valve 42, the tenth electromagnetic valve 57 and the eleventh electromagnetic valve 60 are closed.

The slurry in the middle section is recovered firstly, and then the slurry in the first rubber bag 30 and the slurry in the second rubber bag 31 are recovered, so that the condition that slurry leakage is caused by high pressure in the middle section due to low pressure of the rubber bags are avoided in the sequence, and the condition that the rubber bags are not broken due to increase of deformation pressure of drilling holes is ensured.

8. Recycling of the reusable hole packer 5 and slurry of the rubber bag: when the hole packer needs to be recovered after the drilling extraction at a certain place meets the standard, the downhole PLC controller firstly sends opening instruction information to the seventh electromagnetic valve 49, the tenth electromagnetic valve 57, the twelfth electromagnetic valve 61 and the thirteenth electromagnetic valve 62, slurry at the middle section of the drilling enters the second slurry return hose 47 through the third interface (slurry return port) of the grouting pipe 33 between the bags and the second three-way pipe 43, flows into the downhole slurry return main pipe 4, flows into the main slurry return pipe 2 through the third three-way pipe 55, finally flows into the stirring barrel 7 on the ground under the action of the ground slurry return pump station 63 and the downhole slurry return pump station 59, and after the numerical value monitored by the second pressure sensor 44 reaches a set numerical value, the seventh electromagnetic valve 49, the tenth electromagnetic valve 57, the twelfth electromagnetic valve 61 and the thirteenth electromagnetic valve 62 are closed. Then, the downhole PLC controller sends opening instruction information to the fifth electromagnetic valve 42, the tenth electromagnetic valve 57, the twelfth electromagnetic valve 61 and the thirteenth electromagnetic valve 62, the slurry in the first rubber bag 30 and the second rubber bag 31 enters the first slurry return hose 40 through the third interface (slurry return port) of the grouting pipe 32 and the first three-way pipe 64 in the bag, flows into the downhole slurry return main pipe 4, flows into the main slurry return pipe 2 through the third three-way pipe 55, flows into the stirring barrel 7 on the ground under the action of the ground slurry return pump station 63 and the downhole slurry return pump station 59, and closes the fifth electromagnetic valve 42, the tenth electromagnetic valve 57, the twelfth electromagnetic valve 61 and the thirteenth electromagnetic valve 62 after the value monitored by the first pressure sensor 37 reaches the set value.

9. Alarming and disposing of the decompression of the rubber bag: when the rubber bag is damaged, the pressure monitored by the first pressure sensor 37 drops sharply due to instantaneous leakage, the rubber bag can not be maintained by the filling slurry, or the pressure loss phenomenon occurs in a short time after the pressure rises, the system stops continuously filling the slurry into the rubber bag, prevents the slurry from rushing into the drill hole or the roadway 28 in a large amount, gives out an audible and visual alarm to prompt that the rubber bag in the drill hole is damaged due to the pressure loss, at the moment, the rubber bag in the drill hole can be firstly recovered, and the normal pumping of the drill hole can be ensured by carrying out hole sealing operation after replacing the damaged rubber bag.

10. Alarm and treatment of middle section decompression: when a large number of through cracks appear in the middle section of the drill hole due to the mining influence, so that the slurry loss of the middle section of the drill hole is serious, the pressure monitored by the second pressure sensor 44 is suddenly reduced, the middle section can not be maintained by the filling slurry, or the pressure loss phenomenon appears in a short time after the pressure rises, the system stops continuously filling the slurry into the middle section of the drill hole, prevents the slurry from rushing into the drill hole or the roadway 28 in a large amount, gives out an audible and visual alarm, prompts the pressure loss of the middle section of the drill hole, can firstly measure the gas concentration in a single hole of the drill hole at the moment, can not be treated if the Shan Kongna gas concentration does not obviously reduce, can carry out recovery operation on the hole sealing device of the drill hole, and can adjust the hole sealing position of the hole sealing device or the density and viscosity of the hole sealing slurry of the middle section and seal the hole sealing device again. If the pressure is difficult to maintain, the serious and large cracks around the drilling hole are proved to be difficult to block, and the drilling hole can be closed, so that the concentration of the pumping pipeline is prevented from being reduced as a whole due to air leakage of the drilling hole.

11. The flexible hole sealing dynamic pressure maintaining hole sealing of drilling guarantees that whole drilling is in a stable pressurize pumping state all the time, has stopped the gas leakage that causes because drilling volume grow and the broken pumping drilling inefficacy phenomenon that arouses of drilling volume diminish extrusion pumping pipe after traditional hole sealing material solidifies, has ensured the safe high efficiency of pumping.

The master control PLC controller and the underground PLC controller send out instructions to automatically control the electromagnetic valve, and the signals such as pressure, flow, liquid level, viscosity and the like received by the master control PLC controller do not relate to a new computer program.

The present embodiment is not limited in any way by the shape, material, structure, etc. of the present utility model, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present utility model are all included in the scope of protection of the technical solution of the present utility model.

Claims (6)

1. Intelligent recoverable hole sealing system of ground slurrying, underground storage thick liquid, its characterized in that: the device comprises a ground pulping and storing system, a main pulp conveying pipe, a main pulp returning pipe, an underground pulp storing and conveying system, an underground pulp injecting main pipe, an underground pulp returning main pipe and a rubber bag reusable hole packer; the liquid outlet of the ground pulping and storing system is connected with the liquid inlet of the underground pulping and storing system through a main pulping pipe, the liquid outlet of the underground pulping and storing system is connected with the liquid inlet of the rubber bag reusable hole packer through an underground pulping main pipe, the liquid return port of the rubber bag reusable hole packer is connected with one port of the main pulping and storing system through an underground pulping main pipe, and the other port of the underground pulping main pipe is connected with the pulping return port of the ground pulping and storing system through the main pulping return pipe.

2. The intelligent recoverable hole sealing system for ground pulping and downhole slurry storage according to claim 1, wherein: the ground pulping and slurry storage system comprises a storage bin, a stirring barrel and a belt conveyor, wherein the feeding end of the belt conveyor is positioned below the discharge hole of the storage bin, the top of the stirring barrel is provided with a feeding hole, the discharge end of the belt conveyor is connected with the feeding hole through a transfer guide plate, the top of the stirring barrel is provided with a first stirring motor, a main shaft of the first stirring motor is in transmission connection with a first stirrer arranged in the stirring barrel, the upper side part of the stirring barrel is connected with a water supply pipe, a water supply electromagnetic valve and a first flow sensor are arranged on the water supply pipe, the lower part of the inner wall of the stirring barrel is provided with a first density sensor and a viscosity sensor, and the upper part and the lower part of the inner wall of the stirring barrel are respectively provided with a first liquid level sensor.

3. The intelligent recoverable hole sealing system for ground pulping and downhole slurry storage according to claim 2, wherein: the underground slurry storage and conveying system comprises a slurry storage barrel, a second stirring motor is arranged at the top of the slurry storage barrel, a main shaft of the second stirring motor is in transmission connection with a second stirrer arranged in the slurry storage barrel, two ends of a main slurry conveying pipe are respectively connected with the lower side part of the stirring barrel and the side part of the slurry storage barrel, a ground slurry conveying pump station close to the stirring barrel and an underground slurry conveying pump station close to the slurry storage barrel are arranged on the main slurry conveying pipe, a first electromagnetic valve arranged between the stirring barrel and the ground slurry conveying pump station is arranged on the main slurry conveying pipe, a second electromagnetic valve and a third electromagnetic valve are respectively arranged at a liquid inlet and a liquid outlet of the underground slurry conveying pump station on the main slurry conveying pipe, a second density sensor is arranged at the lower part of the inner wall of the slurry storage barrel, and a second liquid level sensor is arranged at the upper part and the lower part of the inner wall of the slurry storage barrel.

4. The intelligent recoverable hole sealing system for ground pulping and downhole slurry storage according to claim 2 or 3, wherein: the underground roadway is provided with a plurality of drilling holes, wherein the drilling holes are uniformly and alternately arranged along the length direction of the roadway, and each group of drilling holes is internally provided with a rubber bag reusable hole packer; each rubber bag reusable hole packer comprises a first rubber bag, a second rubber bag, a grouting pipe in the bag and a grouting pipe between the bags, wherein a drainage pipe is inserted into the central holes of the first rubber bag and the second rubber bag, the first rubber bag is positioned below the second rubber bag, the grouting pipe in the bag sequentially penetrates through the first rubber bag and the second rubber bag from bottom to top, the upper end of the grouting pipe in the bag is plugged, a first grouting hole positioned in the first rubber bag and a second grouting hole positioned in the second rubber bag are arranged on the grouting pipe in the bag, and the upper port of the grouting pipe between the bags penetrates through the first rubber bag from bottom to top and then stretches into the space between the first rubber bag and the second rubber bag;

the lower port of the grouting pipe in the bag is connected with a first three-way pipe, the lower part of the grouting pipe in the bag is provided with a first pressure sensor and a second flow sensor, a second interface of the first three-way pipe is connected with an underground grouting main pipe through a first grouting hose, a third interface of the first three-way pipe is connected with an underground grouting main pipe through a first grouting hose, a second interface of the first three-way pipe is provided with a fourth electromagnetic valve, and a third interface of the first three-way pipe is provided with a fifth electromagnetic valve;

the lower port of the grouting pipe between the bags is connected with a second three-way pipe, the lower part of the grouting pipe between the bags is provided with a second pressure sensor and a third flow sensor, a second interface of the second three-way pipe is connected with an underground grouting main pipe through a second grouting hose, a third interface of the second three-way pipe is connected with an underground grouting main pipe through a second grouting hose, a sixth electromagnetic valve is arranged on the second interface of the second three-way pipe, and a seventh electromagnetic valve is arranged on the third interface of the second three-way pipe.

5. The intelligent recoverable hole sealing system for ground pulping and downhole slurry storage according to claim 4, wherein: the inlet end of the underground grouting main pipe is connected with the lower side part of the slurry storage barrel, and the underground grouting main pipe is sequentially provided with an eighth electromagnetic valve, an underground grouting pump station, a fourth flow sensor, a ninth electromagnetic valve and a third pressure sensor along the slurry flow direction.

6. The intelligent recoverable hole sealing system for ground pulping and downhole slurry storage according to claim 5, wherein: the outlet end of the underground slurry returning main pipe is connected with a third three-way pipe, a fourth pressure sensor, a tenth electromagnetic valve, a fifth flow sensor and an underground slurry returning pump station are sequentially arranged on the underground slurry returning main pipe along the slurry flow direction, a second interface of the third three-way pipe is connected with the upper side part of the slurry storage barrel, an eleventh electromagnetic valve is arranged on a second interface of the third three-way pipe, two ends of the main slurry returning pipe are respectively connected with a third interface of the third three-way pipe and the upper side part of the stirring barrel, a twelfth electromagnetic valve is arranged on a third interface of the third three-way pipe, and a thirteenth electromagnetic valve close to the stirring barrel and a ground slurry returning pump station are arranged on the main slurry returning pipe.

Images