CN109778863B - Drilling and feeding device for plugging negative-pressure fluid of dynamic water karst channel and use method - Google Patents
Drilling and feeding device for plugging negative-pressure fluid of dynamic water karst channel and use method Download PDFInfo
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Abstract
The invention provides a drilling and feeding device carried by a negative pressure fluid for blocking a karst channel of moving water and a use method thereof, and relates to the technical fields of mine water disaster curtain grouting treatment and feeding blocking of the karst channel. Comprises a channel, a flow supply unit, a feeding unit and a monitoring unit; the channel sequentially comprises a reducing section, a jet section, a feeding section, a monitoring section, a bending section and a vertical section from back to front; the inlet of the reducing section is connected with the output pipeline of the flow supply unit; the monitoring unit can collect flow supply, feeding and fluid flow speed and pressure parameters in the channel in real time, monitor aggregate and fluid conditions in the hopper, judge whether grouting holes are blocked or not, and timely regulate and control flow supply and feeding construction parameters according to the aggregate and fluid conditions. The invention has the characteristics of no blockage of grouting holes, good feeding controllability, continuity and uniformity, great improvement of the water plugging construction efficiency and quality of curtain grouting engineering, reduction of engineering cost and reduction of labor intensity, and considerable economic and social benefits.
Description
Technical Field
The invention relates to the technical field of mine water disaster curtain grouting treatment and feeding blocking of a moving water channel.
Background
The curtain grouting technology for preventing and controlling water damage of large water mines in karst areas is often characterized by large flowing water potential of a movable water pipeline, high flow velocity, low slurry retention rate, poor plugging effect and serious slurry waste of conventional single grouting technology, and is difficult to obtain a good water plugging effect, so that the construction progress is influenced, and the engineering cost is increased. The pipeline flow is converted into seepage flow by throwing aggregate into the karst channel, so that grouting slurry can be effectively reserved in the channel, and the effect of improving the curtain grouting water plugging rate is achieved.
Because the grouting hole depth of the disclosed karst channel is larger and the hole diameter is smaller, aggregate is easy to accumulate around the hole bottom in the hole opening feeding process. The conventional manual direct feeding mode has a plurality of defects: firstly, the manual feeding has poor controllability on the filling quantity and the filling speed, and the feeding continuity and uniformity cannot be well ensured; secondly, because of the non-uniformity of feeding and the small aggregate migration force, the feeding is difficult, the grouting holes are easy to be blocked, the hole-sweeping treatment after blocking is time-consuming and labor-consuming, and secondary hole accidents can also occur; moreover, the labor intensity of manual feeding is high, the construction efficiency is low, the engineering progress is influenced, and the construction cost is increased. Most of the existing feeding devices are feeding devices in animal husbandry or feeding devices in product production lines, and are not suitable for karst channel plugging drilling feeding construction.
Disclosure of Invention
The invention provides a drilling and feeding device for blocking a negative pressure fluid of a karst channel in moving water and a use method, and mainly solves the technical problems of poor controllability, continuity and uniformity, difficult discharging, easiness in blocking holes, high feeding labor intensity, low efficiency and the like of a manual feeding construction process for blocking the drilling of the karst channel in the background art. The invention increases the movement energy under the aggregate mainly through the flushing and carrying and back suction functions of the negative pressure fluid, realizes a fluid carrying feeding mode, is not easy to cause the blockage of grouting holes, has the characteristics of no blockage of grouting holes, good feeding controllability, continuity and uniformity, greatly improves the water blocking construction efficiency and quality of curtain grouting engineering, reduces engineering cost and reduces labor intensity, and has considerable economic and social benefits.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a move water karst passageway shutoff negative pressure fluid and carry drilling feeding device which characterized in that: comprises a channel, a flow supply unit, a feeding unit and a monitoring unit;
The channel sequentially comprises a reducing section, a jet section, a feeding section, a monitoring section, a bending section and a vertical section from back to front; the variable diameter section, the jet flow section, the feeding section, the monitoring section, the bending section and the vertical section are sequentially connected, an outlet of the vertical section can be connected with an orifice pipe, and the feeding section is provided with a feeding port;
the flow supply unit comprises a flow supply pump and a flow supply pipeline; the inlet of the reducing section is connected with the output pipeline of the flow supply unit;
The feeding unit comprises a storage part, a belt feeding machine and a feeding funnel; the storage part stores the aggregate and discharges the aggregate to the belt feeder, the belt feeder conveys the aggregate to the feeding funnel, and the feeding funnel is connected with the feeding opening; a conveying mechanism is arranged in the feeding hopper; realizing mechanical feeding;
the monitoring unit comprises a controller, an electromagnetic flowmeter, a negative pressure transmitter and a camera; the electromagnetic flowmeter, the negative pressure transmitter, the flow supply pump, the storage part, the belt feeder and the conveying mechanism are all connected with the controller; preferably, the flow supply pump adopts a stepless speed change grouting pump.
Preferably, the conveying mechanism comprises a rotating motor, a screw rod connected with the rotating motor, and the screw rod is arranged in a conical feeding funnel, and the bottom end of the screw rod is positioned at the feeding opening; the upper opening of the conical funnel is provided with a horizontal bar-shaped support, and the rotating motor is fixed on the bar-shaped support through a vertical rod.
Preferably, the storage part comprises a storage bin and a discharging electric valve, wherein the discharging electric valve is positioned at the opening of the lower end of the storage bin and is connected with the controller to control whether discharging is performed.
Preferably, the jet wedge is embedded in the wall of the jet section, so that the jet hole is gradually reduced along the fluid flow direction, and a jet port is formed at the joint of the jet section and the feeding section.
Preferably, the jet wedge is triangular in shape formed by longitudinally cutting a cylindrical surface in a plane.
Further, the vertical sections of the channels can be connected with pipes of variable diameter structures so as to be suitable for grouting Kong Touliao with different apertures.
Preferably, the channel comprises a strip-shaped monitoring window or a thick-layer transparent toughened glass with a horizontal section; the monitoring unit comprises a camera, and the camera is connected with the controller.
Preferably, the aggregate comprises one or more of rice hulls, wheat straws, soybeans, kelp, sand, stones, cement membrane bags and the like; the fluid supply comprises water, pure cement slurry or modified clay mixed slurry and the like.
The method for using the drilling and feeding device for blocking the negative-pressure fluid carried by the moving water karst channel according to any one of the above steps is characterized by comprising the following steps:
1) According to the size and the form of the karst channel and the specification of the grouting holes, a drilling and feeding device carried by a negative-pressure fluid is plugged by a moving water karst channel which meets the feeding production capacity, and the device is installed; selecting reasonable aggregate types and particle sizes; selecting a fluid type for flow;
2) Working according to each set parameter: carrying out feeding construction, gradually increasing the aggregate particle size and feeding rate, and obtaining corresponding parameters of the maximum aggregate particle size and feeding rate without blocking holes at the flow rate; gradually increasing the flow supply flow speed, and correspondingly increasing the parameters by taking the obtained aggregate particle size and the feeding rate as references to obtain the optimal aggregate particle size and feeding rate combination parameters under each flow supply flow speed; the flow supply part can continuously adjust the flow supply flow speed and the corresponding negative pressure in the hole, so that the smooth filling of aggregate is ensured;
3) In the feeding process, the filling and dropping situation of the aggregate is observed according to the flow rate and the pressure of the feed flow, and the aggregate and the fluid type are changed in time so as to adapt to the dynamic change of the blocking of the karst channel and ensure the feeding construction under the optimal feeding parameters;
4) If the flow rate of the fluid is reduced, the negative pressure is reset to zero or positive, so that the blocking accident is indicated; if the hole blocking accident occurs, stopping feeding immediately and flushing the grouting holes by high-speed fluid; if the effect is poor, the feeding channel is removed from the orifice pipe to be subjected to hole sweeping treatment, and whether the feeding ending standard is reached is judged, so that the next feeding is continued or ended is determined.
The invention has the technical effects that: the technical problems of poor controllability, continuity and uniformity, difficult blanking, easy hole blocking, high feeding labor intensity, low efficiency and the like of the karst channel blocking drilling manual feeding construction process in the background art are mainly solved. The invention increases the movement energy under the aggregate mainly through the flushing and carrying and back suction functions of the negative pressure fluid, realizes a fluid carrying feeding mode, is not easy to cause the blockage of grouting holes, has the characteristics of no blockage of grouting holes, good feeding controllability, continuity and uniformity, greatly improves the water blocking construction efficiency and quality of curtain grouting engineering, reduces engineering cost and reduces labor intensity, and has considerable economic and social benefits.
Compared with the prior art, the invention has the following beneficial effects:
(1) Compared with the existing feeding method, the feeding method, namely the fluid belt feeding method, utilizes the flushing and carrying action of high-speed fluid and the downhole negative pressure back suction action generated when the fluid falls to convey aggregate, can effectively increase the downward movement energy of the aggregate, enlarge the movement range of the aggregate, reduce the blocking occurrence times of grouting holes and ensure smooth feeding construction;
(2) Compared with the existing feeding device, a high-speed high-pressure jet flow is generated below a channel feeding port in a manner of an embedded wedge body, and the high-speed high-pressure jet flow impacts and carries aggregate into a grouting hole;
(3) Compared with the existing feeding device, the continuous adjustment of the flow speed of the fluid supply can be realized, and stable fluid with the required flow speed is provided for feeding;
(4) According to the device and the application method, compared with a manual direct feeding method, the device can realize mechanized, continuous and uniform feeding construction, and the manual labor intensity is reduced; the feeding funnel with the screw rod can realize uniform-speed dropping of aggregate and ensure that a certain amount of aggregate is reserved in the funnel so as to prevent channel fluid from overflowing and negative pressure loss;
(5) Compared with the existing feeding device, the feeding device can judge whether a hole blocking accident occurs or not by monitoring the flow velocity and the pressure of the fluid in the channel, and timely adjust the feeding parameters according to the hole blocking accident so as to avoid the hole blocking accident or treat the hole blocking accident;
(6) Compared with the existing feeding method, the feeding method utilizes different types of fluids such as water, slurry and the like to carry various types of aggregates such as sand, stones and the like, and can realize drilling feeding construction of various fluid and aggregate combination types aiming at the sizes and the forms of holes of karst channels and grouting holes;
(7) Compared with the existing feeding device, the channel part comprises a strip-shaped monitoring window or a smooth circular pipeline made of thick-layer transparent toughened glass, so that the aggregate migration resistance can be effectively reduced, the aggregate retention condition in the channel can be conveniently observed, and the blocking accident of a feed opening and even the whole pipeline can be timely found; the functional pipe sections of the channel are connected by movable interfaces, so that the pipe blockage accident can be conveniently detached and treated.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view (or plan view) of the overall structure of the feeder of the present invention.
Fig. 2 is a partial view in the direction a of fig. 1.
Fig. 3 is a partial view of fig. 1 from B.
Fig. 4 is a schematic diagram showing the structural change of the section of the jet wedge of the jet section in the inflow direction C in fig. 2.
In the figure, 1-jet section; 2-a feeding section; 3-monitoring section; 4-bending the section; 5-reducing section; 6-a flow supply pipeline; 7-a feed pump; 8-a feed inlet; 9- (conical) charging hopper; 10-rotating a motor; 11-a horizontal bar support; 12-a vertical rod; 13-rotating shaft; 14-a screw rod; 15- (plug-in) electromagnetic flow rate meter; a 16- (plug-in) negative pressure transducer; 17-a belt feeder; 18-a storage bin; 19-a controller; 20-control lines; 21-signal lines; 22-interface 1; 23-interface 2; 24-interface 3; 25-interface 4; 26-interface 5; 27-interface 6; 28-interface 7; 29-vertical section; 30-orifice tube; 31-jet wedge; 32-a camera; 33-blanking electric valve.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 to 4, the present invention will now be described.
As a specific implementation mode provided by the invention, the main technical scheme of the invention is as follows: the utility model provides a move water karst passageway shutoff negative pressure fluid and carry drilling feeding device which characterized in that: comprises a channel, a flow supply unit, a feeding unit and a monitoring unit;
The channel sequentially comprises a reducing section 5, a jet flow section 1, a feeding section 2, a monitoring section 3, a bending section 4 and a vertical section 29 from back to front; the variable diameter section 5, the jet flow section 1, the feeding section 2, the monitoring section 3, the bending section 4 and the vertical section 29 are sequentially connected, an outlet of the vertical section 29 can be connected with an orifice pipe 30, and the feeding section 2 is provided with a feeding port 8;
the flow supply unit comprises a flow supply pump 7 and a flow supply pipeline 6; the inlet of the reducing section 5 is connected with an output pipeline of the flow supply unit;
the feeding unit comprises a storage part, a belt feeding machine 17 and a feeding funnel 9; the storage part stores aggregate and discharges the aggregate to the belt feeder 17, the belt feeder 17 conveys the aggregate to the feeding funnel 9, and the feeding funnel 9 is connected with the feeding port 8; a conveying mechanism is arranged in the feeding funnel 9; realizing mechanical feeding;
the monitoring unit comprises a controller 19, an electromagnetic flowmeter 15, a negative pressure transmitter 16 and a camera (32); the electromagnetic flowmeter 15, the negative pressure transmitter 16, the flow supply pump 7, the storage part, the belt feeder 17 and the conveying mechanism are all connected with the controller 19; the method can collect flow-supplying, feeding and fluid flow-speed and pressure parameters in the channel in real time, monitor aggregate and fluid conditions in the hopper, judge whether grouting holes are blocked or not, and timely regulate and control flow-supplying and feeding construction parameters according to the flow-speed and fluid conditions.
As a specific embodiment of the present invention, it is preferable that the flow pump 7 is a continuously variable grouting pump.
As a specific embodiment provided by the invention, preferably, the conveying mechanism comprises a rotating motor 10, a screw rod 14 connected with the rotating motor 10, and is arranged in a conical feeding funnel 9, and the bottom end of the screw rod is positioned at a feeding hole 8; the upper opening of the conical funnel is provided with a horizontal bar-shaped support 11, and the rotary motor 10 is fixed on the bar-shaped support 11 through a vertical rod 12.
As a specific embodiment of the present invention, preferably, the storage portion includes a storage bin 18 and a discharging electric valve 33, where the discharging electric valve 33 is located at an opening at a lower end of the storage bin 18, and is connected to the controller 19 to control whether to discharge.
As a specific embodiment provided by the invention, preferably, the jet wedge 31 is embedded in the pipe wall of the jet section 1, so that the jet hole gradually becomes smaller along the fluid flow direction, and a jet port is formed at the joint of the jet section 1 and the feeding section 2.
As a specific embodiment provided by the present invention, preferably, the shape of the jet wedge 31 is a triangle formed by longitudinally cutting a cylindrical surface in a plane.
As a specific embodiment provided by the invention, further, the vertical section 29 of the channel can be connected with a pipeline with a variable diameter structure, so as to be suitable for grouting Kong Touliao with different apertures.
As a specific implementation mode provided by the invention, preferably, the channel comprises a strip-shaped monitoring window or a thick-layer transparent toughened glass with a horizontal section material; the monitoring unit comprises a camera 32, and the camera 32 is connected with the controller 19.
As a specific embodiment provided by the invention, preferably, the aggregate comprises one or more of rice hulls, wheat straws, soybeans, kelp, sand, stones, cement membrane bags and the like; the fluid supply comprises water, pure cement slurry or modified clay mixed slurry and the like.
The method for using the drilling and feeding device for blocking the negative-pressure fluid carried by the moving water karst channel according to any one of the above steps is characterized by comprising the following steps:
1) According to the size and the form of the karst channel and the specification of the grouting holes, a drilling and feeding device carried by a negative-pressure fluid is plugged by a moving water karst channel which meets the feeding production capacity, and the device is installed; selecting reasonable aggregate types and particle sizes; selecting a fluid type for flow; firstly, according to the karst channel condition disclosed by the grouting holes, the grouting hole pressure and the water injection test result, selecting initial fluid and aggregate, then adjusting the flow rate of the supplied fluid to a certain initial value, and gradually feeding from slow to fast after the fluid in the channel is stable.
2) Working according to each set parameter: carrying out feeding construction, gradually increasing the aggregate particle size and feeding rate, and obtaining corresponding parameters of the maximum aggregate particle size and feeding rate without blocking holes at the flow rate; gradually increasing the flow supply flow speed, and correspondingly increasing the parameters by taking the obtained aggregate particle size and the feeding rate as references to obtain the optimal aggregate particle size and feeding rate combination parameters under each flow supply flow speed; the flow supply part can continuously adjust the flow supply flow speed and the corresponding negative pressure in the hole, so that the smooth filling of aggregate is ensured;
3) In the feeding process, the filling and dropping situation of the aggregate is observed according to the flow rate and the pressure of the feed flow, and the aggregate and the fluid type are changed in time so as to adapt to the dynamic change of the blocking of the karst channel and ensure the feeding construction under the optimal feeding parameters; according to the karst channel plugging and discharging conditions, changing the combination modes of flow supply flow speed, fluid type, feeding rate and aggregate type in the feeding process so as to adapt to the latest plugging and feeding state; judging whether a blockage accident occurs or not by monitoring the flow velocity and the pressure in the channel, and accordingly timely regulating and controlling the flow supply and feeding parameters to prevent the blockage accident; until reaching the end standard of feeding construction; judging the migration and accumulation state of the aggregate at the bottom of the hole through the flow velocity, the pressure and the aggregate downward movement condition of the channel fluid, and adjusting the flow supply flow velocity and the feeding rate according to the migration and accumulation state so as to prevent the situation that the flow supply flow velocity is smaller and the feeding rate is too high, so that the aggregate migration capability is insufficient to accumulate at the bottom of the hole and even fill up the grouting hole, and the drilling blockage accident or the direct waste hole is caused;
4) If the flow rate of the fluid is reduced, the negative pressure is reset to zero or positive, so that the blocking accident is indicated; if the hole blocking accident occurs, stopping feeding immediately and flushing the grouting holes by high-speed fluid; if the effect is poor, the feeding channel is removed from the orifice pipe to be subjected to hole sweeping treatment, and whether the feeding ending standard is reached is judged, so that the next feeding is continued or ended is determined.
As a specific embodiment provided by the present invention, the following is further described.
The curved section of the channel is an arc-shaped pipeline, so that the aggregate migration resistance can be effectively reduced; the rotating motor is fixed on the strip-shaped support through a vertical rod, the spiral rod penetrates through the hopper in the middle, the bottom end of the spiral rod is positioned at the feed inlet, and the top end of the spiral rod is connected with the rotating motor through a rotating shaft; the blanking efficiency can be improved, a certain aggregate is ensured to be arranged in the hopper, the overflow of the fluid in the channel is effectively prevented, and the negative pressure loss is reduced; the flow supply pump adopts a stepless speed change grouting pump, can quantitatively regulate and control the flow supply flow speed, and provides continuous gradual flow speed fluid; the flow supply pipeline is connected with the channel reducing section; the controller is connected with the electromagnetic flow velocity meter, the negative pressure transmitter, the camera, the flow supply pump, the blanking electric valve, the belt feeder and the rotating motor through signal wires, and is connected with the flow supply pump, the blanking electric valve, the belt feeder and the rotating motor through control wires; the method can collect flow-supplying, feeding and fluid flow-speed and pressure parameters in the channel in real time, monitor aggregate and fluid conditions in the hopper, judge whether grouting holes are blocked or not, and timely regulate and control flow-supplying and feeding construction parameters according to the flow-speed and fluid conditions. The feeding device can effectively realize mechanical high-efficiency quantitative constant-speed feeding construction of grouting Kong Jielou for blocking the orifice of a water karst channel, can increase the moving energy under aggregate through the flushing, carrying and back-suction functions of negative pressure fluid, realize the feeding mode of fluid belt materials of different fluid and aggregate combination types, judge the migration and accumulation condition of aggregate at the bottom of a hole through monitoring the flow velocity and pressure of the fluid in the channel, ensure the controllability, the continuity and the uniformity of feeding, reduce the blocking occurrence times of grouting holes, improve the feeding construction efficiency and reduce the labor intensity. The length of the jet flow section 1 is 80cm, the length of the feeding section 2 is 30cm, the length of the monitoring section 3 is 70cm, the length of the reducing section 5 is 40cm, and the length of the vertical section (29) is 50cm; the channel part is a thick-layer transparent toughened glass smooth round pipeline, the outer diameter is 138mm, and the inner diameter is 118mm; the channel part bending section 4 is an arc-shaped pipeline, and is 1/4 arc with the bending radius of 40 cm; the wedge body is embedded in the jet section 1 of the channel part, the length of the wedge body is 60cm, the wedge body is gradually thickened along the fluid flow direction, the variation range is 0-80 mm, the distance between the thickest point of the wedge body and the interface 3 is 5cm, and jet flow is formed under the feed port; the channel part monitoring section 3 is provided with an inserted electromagnetic flowmeter 15 and an inserted negative pressure transmitter 16.
The specific operation method of the feeding device is as follows:
the feeder is first assembled as designed and mounted on the orifice tube 30. Then, according to the karst channel condition disclosed by the grouting holes, the grouting hole pressure and the water injection test result, an initial aggregate and a fluid type are selected, a grouting pump 7 is opened through a controller 19, the flow supply flow rate is regulated to a certain value, a discharging electric valve 33, a belt feeding machine 17 and a rotating motor 10 are regulated and controlled to fill aggregate according to the small-to-large speed until the aggregate can be filled up to the maximum value under the premise of ensuring smooth feeding, the flow rate and the pressure real-time parameters measured by an inserted electromagnetic flowmeter 15 and an inserted negative pressure transmitter 16 are gradually increased, the feeding flow rate is correspondingly increased, and finally the optimal efficiency feeding parameter under the aggregate-fluid combination condition is obtained; and judging whether a hole blockage or pipe blockage accident occurs according to the flow speed and pressure parameters measured by the plug-in electromagnetic flowmeter 15 and the plug-in negative pressure transmitter 16 and the condition in the feeding hopper obtained by the camera 32 and by combining the observation of the channel part. If the flow speed and the negative pressure are reduced or the flow is reset to zero, the aggregate in the hopper is difficult to fall, the fluid overflows or a large amount of aggregate is visible in the channel to remain, the grouting pump 7 is regulated by the controller 19 to increase the flow supply flow speed, the channel and the grouting holes are flushed by high-pressure high-speed fluid, and if the effect is poor, the feeding device can be directly dismantled to sweep the holes. Until reaching the standard of end of feeding.
In the feeding process, aggregate and fluid can be freely combined according to karst channel states and grouting hole pressure and water permeability change conditions of water injection tests. The device can effectively realize mechanical high-efficiency quantitative constant-speed feeding construction of grouting Kong Jielou for blocking the orifice of the water karst channel, can increase the aggregate downward movement energy through the flushing, carrying and back-sucking effects of the negative pressure fluid, realize the feeding modes of fluid belt materials of different fluid and aggregate combination types, judge the migration and accumulation conditions of the aggregate at the bottom of the hole through monitoring the flow velocity and pressure of the fluid in the channel, ensure the controllability, the continuity and the uniformity of feeding, reduce the blocking occurrence times of grouting holes, improve the feeding construction efficiency and reduce the labor intensity.
The above is not mentioned in part by the person skilled in the art.
The above-described embodiments are illustrative, and not to be construed as limiting the invention, and although the present invention has been described in detail with reference to the above-described embodiments, it will be apparent to those skilled in the art that variations, modifications, or equivalents, improvements in part of the technical features, etc. may be made within the scope of the present invention without departing from the principles and spirit of the invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a move water karst passageway shutoff negative pressure fluid and carry drilling feeding device which characterized in that: comprises a channel, a flow supply unit, a feeding unit and a monitoring unit;
The channel sequentially comprises a reducing section (5), a jet section (1), a feeding section (2), a monitoring section (3), a bending section (4) and a vertical section (29) from back to front; the variable diameter section (5), the jet flow section (1), the feeding section (2), the monitoring section (3), the bending section (4) and the vertical section (29) are sequentially connected, an outlet of the vertical section (29) can be connected with the orifice pipe (30), and the feeding section (2) is provided with a feeding port (8);
The jet wedge body (31) is embedded in the pipe wall of the jet section (1) to enable the jet hole to be gradually reduced along the fluid flow direction, and a jet port is formed at the joint of the jet section (1) and the feeding section (2); the jet wedge body (31) is triangular formed by longitudinally cutting a cylindrical surface in a plane;
The flow supply unit comprises a flow supply pump (7) and a flow supply pipeline; an inlet of the reducing section (5) is connected with an output pipeline (6) of the flow supply unit;
The feeding unit comprises a storage part, a belt feeding machine (17) and a feeding funnel (9); the storage part stores aggregate and discharges the aggregate to the belt feeder (17), the belt feeder (17) conveys the aggregate to the feeding funnel (9), and the feeding funnel (9) is connected with the feeding port (8); a conveying mechanism is arranged in the feeding funnel (9); realizing mechanical feeding;
The monitoring unit comprises a controller (19), an electromagnetic flowmeter (15), a negative pressure transmitter (16) and a camera (32); the electromagnetic flowmeter (15), the negative pressure transmitter (16), the camera (32), the flow supply pump (7), the storage part, the belt feeder (17) and the conveying mechanism are all connected with the controller (19); the method can collect flow-supplying, feeding and fluid flow-speed and pressure parameters in the channel in real time, monitor aggregate and fluid conditions in the hopper, judge whether grouting holes are blocked or not, and timely regulate and control the flow-supplying and feeding construction parameters according to the aggregate and fluid conditions;
the flow supply pump (7) adopts a stepless speed change grouting pump; the conveying mechanism comprises a rotating motor (10), a screw rod (14) connected with the rotating motor (10) and arranged in a conical feeding funnel (9), and the bottom end of the screw rod is positioned at a feeding opening (8); a horizontal bar-shaped support (11) is arranged at the upper opening of the conical funnel, and a rotating motor (10) is fixed on the bar-shaped support (11) through a vertical rod (12); the storage part comprises a storage bin (18) and a discharging electric valve (33), wherein the discharging electric valve (33) is positioned at the opening of the lower end of the storage bin (18) and is connected with the controller (19) to control whether discharging is performed; the aggregate comprises one or more of rice husk, wheat straw, soybean, kelp, sand and stone; the fluid supply comprises water, pure cement slurry or modified clay mixed slurry.
2. The hydrodynamic karst passage plugging negative pressure fluid carrying borehole feeding device of claim 1, wherein: the vertical sections (29) of the channels can be connected with pipes of variable diameter structures so as to be suitable for grouting Kong Touliao with different apertures.
3. The hydrodynamic karst passage plugging negative pressure fluid carrying borehole feeding device of claim 1, wherein: the channel includes a bar-shaped monitoring window.
4. A method of using a hydrodynamic karst passageway plugging negative pressure fluid carrying borehole charging apparatus as claimed in any one of claims 1 to 3, comprising the steps of:
1) According to the size and the form of the karst channel and the specification of the grouting holes, a drilling and feeding device carried by a negative-pressure fluid is plugged by a moving water karst channel which meets the feeding production capacity, and the device is installed; selecting reasonable aggregate types and particle sizes; selecting a fluid type for flow;
2) Working according to each set parameter: carrying out feeding construction, gradually increasing the aggregate particle size and feeding rate, and obtaining corresponding parameters of the maximum aggregate particle size and feeding rate without blocking holes at the flow rate; gradually increasing the flow supply flow speed, and correspondingly increasing the parameters by taking the obtained aggregate particle size and the feeding rate as references to obtain the optimal aggregate particle size and feeding rate combination parameters under each flow supply flow speed; the flow supply part can continuously adjust the flow supply flow speed and the corresponding negative pressure in the hole, so that the smooth filling of aggregate is ensured;
3) In the feeding process, the filling and dropping situation of the aggregate is observed according to the flow rate and the pressure of the feed flow, and the aggregate and the fluid type are changed in time so as to adapt to the dynamic change of the blocking of the karst channel and ensure the feeding construction under the optimal feeding parameters;
4) If the flow rate of the fluid is reduced, the negative pressure is reset to zero or positive, so that the blocking accident is indicated; if the hole blocking accident occurs, stopping feeding immediately and flushing the grouting holes by high-speed fluid; if the effect is poor, the feeding channel is removed from the orifice pipe to be subjected to hole sweeping treatment, and whether the feeding ending standard is reached is judged, so that the next feeding is continued or ended is determined.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910185535.3A CN109778863B (en) | 2019-03-12 | 2019-03-12 | Drilling and feeding device for plugging negative-pressure fluid of dynamic water karst channel and use method |
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| CN201910185535.3A CN109778863B (en) | 2019-03-12 | 2019-03-12 | Drilling and feeding device for plugging negative-pressure fluid of dynamic water karst channel and use method |
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| JP2001288752A (en) * | 2000-04-07 | 2001-10-19 | Nisshoku Corp | Spraying method of mixture and its device |
| US20080260473A1 (en) * | 2007-04-17 | 2008-10-23 | Smith Eric W | Underground filling and sealing method |
| CN203891831U (en) * | 2014-06-12 | 2014-10-22 | 中煤科工集团西安研究院有限公司 | Double-pipe aggregate pouring device with orifice |
| CN209907397U (en) * | 2019-03-12 | 2020-01-07 | 华北有色工程勘察院有限公司 | Moving water karst channel plugging negative pressure fluid carrying drilling hole feeding device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001288752A (en) * | 2000-04-07 | 2001-10-19 | Nisshoku Corp | Spraying method of mixture and its device |
| US20080260473A1 (en) * | 2007-04-17 | 2008-10-23 | Smith Eric W | Underground filling and sealing method |
| CN203891831U (en) * | 2014-06-12 | 2014-10-22 | 中煤科工集团西安研究院有限公司 | Double-pipe aggregate pouring device with orifice |
| CN209907397U (en) * | 2019-03-12 | 2020-01-07 | 华北有色工程勘察院有限公司 | Moving water karst channel plugging negative pressure fluid carrying drilling hole feeding device |
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