CN107585979B - River sludge solidification treatment process - Google Patents
River sludge solidification treatment process Download PDFInfo
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- CN107585979B CN107585979B CN201710923533.0A CN201710923533A CN107585979B CN 107585979 B CN107585979 B CN 107585979B CN 201710923533 A CN201710923533 A CN 201710923533A CN 107585979 B CN107585979 B CN 107585979B
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Abstract
The invention relates to a river sludge solidification treatment process, which comprises the following steps: surface water in the river channel is pumped and drained completely; sampling the sludge of the river channel section to obtain a sludge sample so as to obtain the components and the water content of the sludge; mixing the selected curing agent with water according to a ratio to form a curing agent mixed solution; pressurizing and directly spraying the curing agent mixed solution into the river sludge in a high-pressure rotary spraying manner, and fully and completely stirring and mixing the curing agent mixed solution and the river sludge; and (4) producing solidified soil after the river sludge is solidified, and excavating the solidified soil in the river by using excavating equipment and transporting the solidified soil to a specified position. According to the process, the liquid curing agent mixed liquor is directly sprayed into the sludge of the river channel in a high-pressure rotary spraying mode, the sludge can be directly stirred and mixed on the site of the river channel, time and labor are saved, and stirring and curing efficiency is high.
Description
Technical Field
The invention relates to the technical field of river channel sludge treatment technology and equipment, in particular to a river channel sludge solidification treatment process.
Background
In the prior art, the river dredging technology mainly comprises the following steps: 1. draining and dredging: a desilting method of dry excavation or hydraulic flushing excavation is carried out after the drainage of the river water is dried by constructing a temporary cofferdam at the construction section of the river; 2. underwater dredging: generally, a dredging machine is arranged on a ship, the dredging ship is used as a construction platform, dredging equipment is operated on the water surface to excavate sludge, and the sludge is conveyed to a shore yard through a pipeline conveying system; 3. environmental protection and dredging: the key and difficulty of environmental protection dredging lies in how to ensure effective dredging depth and position and carry out effective secondary pollution prevention and control, and special dredging equipment is generally used for achieving the aim.
In the text "chemical solidification principle of shallow precipitated sludge" in "Jiangsu water conservancy" 2011 8 th, the general production flow of the existing river sludge solidification treatment process comprises the following steps: surface water pumping and discharging → pretreatment (primary removal of large impurities therein) → testing of water content → determination of the proportion of curing agent → stirring of the sludge and the curing agent in a storage bin → continuous uniform stirring → stacking of produced cured soil → turning of a digging machine.
The river sludge curing treatment process adopts a curing agent dry powder form, so that uniform stirring is not easy to realize during stirring, and the curing efficiency is low; in addition, the process needs to convey the sludge to a storage bin for stirring, and the conveying of the sludge to the storage bin is time-consuming and labor-consuming due to the thixotropy of the sludge, so that the production cost is huge.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a river sludge solidification treatment process, which can directly stir and mix sludge on the river site by directly spraying liquid curing agent mixed liquor into river sludge in a high-pressure rotary spraying manner, and has the advantages of time and labor saving and high stirring and solidification efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
the river sludge solidification treatment process comprises the following steps:
pretreatment: pumping surface water in the river channel completely by adopting water pumping equipment until sludge at the bottom of the river channel is exposed;
the method comprises the following steps: depth measurement is carried out on sludge of a river channel section to be solidified to obtain the depth of the sludge of the river channel section, the sludge of the river channel section is sampled to obtain a sludge sample, and the sludge sample is tested and analyzed to obtain the components and the water content of the sludge of the river channel section;
step two: selecting the type of a curing agent according to the components of the sludge obtained in the step one, determining the proportion of the curing agent to water according to the water content of the sludge obtained in the step one, and mixing the selected curing agent and water according to the proportion to form a curing agent mixed solution;
step three: directly and horizontally spraying the curing agent mixed solution into the sludge of the river channel in a high-pressure rotary spraying mode after pressurization, and enabling the curing agent mixed solution to vertically reach the depth of the sludge measured in the step one;
step four: and (4) producing solidified soil after the river sludge is solidified, and excavating the solidified soil in the river by using excavating equipment and transporting the solidified soil to a specified position.
Stirring and mixing the curing agent mixed liquid and the river silt by adopting an operation excavator, wherein the operation excavator comprises an excavator body and a curing power head assembled on the excavator body, and the curing power head comprises a flow divider, a drill rod assembly, a power box and a quick connector; the upper end of the drill rod component passes through the power box and is connected with the flow divider; the flow divider is connected with an external high-pressure pump and an external air compressor; the drill rod assembly comprises a drill rod and a drill bit arranged at the bottom end of the drill rod, the drill rod is a dual drill rod, a nozzle communicated with the inside of the inner pipe is arranged at the bottom of the inner pipe of the drill rod, an air faucet is arranged at the position, corresponding to the nozzle, of the bottom of the outer pipe of the drill rod, the nozzle penetrates through the air faucet and extends to the outside of the outer pipe, the opening of the air faucet is larger than the outer diameter of the nozzle, high-pressure liquid conveyed by the high-pressure pump is pressed into the inner pipe through a flow divider, compressed air conveyed by an air compressor is pressed into an annular space between the inner pipe and the outer pipe through the flow divider, the drill rod assembly is driven to; the method for mixing the curing agent mixed liquor and the river sludge by using the operating excavator comprises the following steps:
the excavator body drives the curing power head to move to a river channel section to be mixed, and drives the curing power head to vertically move downwards to stretch into river channel sludge;
starting a high-pressure pump, pressurizing the curing agent mixed solution and pumping the curing agent mixed solution into a curing power head;
the curing power head is driven by the driving assembly to move downwards and rotate, and the pressurized curing agent mixed liquid is sprayed out from the nozzle until the depth of the sludge in the step two is reached;
the air compressor is started, compressed air is sprayed out from the air nozzle, and the area of stirring and mixing the curing agent mixed liquid and the river sludge is enlarged.
The invention has the following beneficial effects:
according to the process, the liquid curing agent mixed liquid is directly sprayed into the river sludge in a high-pressure rotary spraying manner, and the curing agent is mixed with water to form the curing agent mixed liquid before the curing agent is contacted with the sludge, so that the problems of inaccurate ratio and uneven dispersion of the curing agent dry powder caused by dry powder spraying in the conventional process are solved, and the using amount of the curing agent is greatly saved;
secondly, the curing agent mixed liquid can be directly sprayed into the sludge on the river channel site on the bank by utilizing an operation excavator with a rotary spraying curing power head, on one hand, the operation on water is not needed, on the other hand, the sludge can be directly cured on the river channel site, the sludge is not needed to be conveyed to the bank and then is treated, time and labor are saved, and the curing efficiency is high;
moreover, the mode of high pressure jet grouting is adopted to spray pressurized curing agent mixed liquid into the river channel silt, and when the conventional curing agent and the silt are mixed, the high pressure jet grouting is utilized to cut the river channel silt, so that the stirring efficiency is further improved, and the curing process is convenient to carry out and finish.
Drawings
FIG. 1 is a schematic front structural view of a river sludge sampling device with a cover and a door both open;
FIG. 2 is a partially enlarged schematic view of FIG. 1;
FIG. 3 is a schematic front view of a river sludge sampling device according to the present invention with the cover and door closed;
FIG. 4 is a schematic view of the overall structure of a sludge curing agent mixing device according to the present invention;
FIG. 5 is a schematic structural diagram of a curing agent stirring mechanism of the sludge curing agent mixing device of the present invention;
fig. 6 is an overall structural view of the working excavator of the present invention;
FIG. 7 is a schematic perspective view of a curing power head according to the present invention;
FIG. 8 is a schematic diagram of the internal structure of the power box of the curing power head of the present invention;
FIG. 9 is a schematic diagram of the construction of the drill stem assembly of the cured power head of the present invention;
FIG. 10 is a schematic diagram of the nozzle and air nozzle on the drill stem of the setting head of the present invention.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
the river sludge solidification treatment process comprises the following steps:
pretreatment: and pumping water equipment such as a water pump and the like is adopted to pump and drain surface water in the river channel completely until sludge at the bottom of the river channel is exposed.
The method comprises the following steps: the method comprises the steps of carrying out depth measurement on sludge of a river channel section to be cured to obtain the depth of the sludge of the river channel section, sampling the sludge of the river channel section to obtain a sludge sample, carrying out test analysis on the sludge sample to obtain the components and the water content of the sludge of the river channel section, and obtaining the depth of extension of curing stirring of a curing power head, the type of adopted curing agent and the ratio of the curing agent to water.
Specifically, the method comprises the following substeps:
s1: selecting a plurality of position points as test points on a river channel section to be cured, wherein in the embodiment, the initial position, the middle position and the tail end position of the river channel section are selected as the test points;
s2: vertically inserting river channel sludge sampling devices into the test points respectively until the river channel sludge sampling devices cannot be inserted downwards manually, lifting the river channel sludge sampling devices after marking the insertion depth, taking out sludge in the river channel sludge sampling devices, testing sludge components and water content, and recording the depth, components and water content of the river channel sludge of the position points respectively;
s3: according to the recorded depth, components and water content of the river channel sludge of each test point, averaging according to the sum of the depths of the river channel sludge of each test point to calculate the average depth of the river channel sludge of the river channel section, obtaining the total components of the river channel sludge of the river channel section according to the components of the river channel sludge of each comprehensive position point, and obtaining the average water content of the river channel section sludge of the river channel section according to the averaging method of the sum of the water content of the river channel sludge of each test point;
s4: obtaining the depth of the solidification power head for solidification and stirring to extend into according to the average depth of the river sludge; selecting the type of a curing agent adopted by a curing process according to the total components of the river sludge; and obtaining the ratio of the curing agent to the water according to the average water content of the river sludge.
In the embodiment, a river sludge sampling device is adopted to sample river sludge, and referring to fig. 1 to 3, the river sludge sampling device comprises a sampling bin 1, a sampling scale 2, a baffle seat 3 and a bin opening push rod 4; sample storehouse 1 is rectangular cylindric, and sample storehouse 1 is gone up and has been seted up along the length direction in sample storehouse 1 and observe hole 11, and sample storehouse 1 is gone up and to have a cang gai 12 that can open and close observation hole 11 that hinges through the hinge at the side of observing hole 11, and the upper end fixedly connected with sampling handle 13 in sample storehouse 1, and the lower extreme opening and the slope in sample storehouse 1 set up and form a pointed end 14, make things convenient for sampling device to sample in inserting the silt in river course. The lower extreme of sample storehouse 1 is provided with switching lower extreme open-ended door 15, and door 15 passes through the hinge and articulates in sample storehouse 1 lower extreme one side. The bin gate 15 enables the bin gate 15 to be always in a state of closing the sampling bin 1 through a contraction mechanism; in this embodiment, the retraction mechanism is a spring 16, one end of the spring 16 is fixedly connected to the bottom of the sampling chamber 1, and the other end is fixedly connected to the side of the chamber door 15.
The lower end of the sampling scale 2 penetrates through the top end of the sampling bin 1 and extends into the sampling bin 1 to be fixedly connected with the baffle seat 3, the baffle seat 3 is in a circular plate shape and is arranged perpendicular to the length direction of the sampling scale 2, and the baffle seat 3 is in sliding close fit with the inner wall of the sampling bin 1; the upper end of the sampling scale 2 is fixedly connected with a discharge handle 21. The sampling scale 2 is marked with scales (not shown in the figure) for measuring the depth of the river silt. The baffle seat 3 is provided with a through hole for the opening push rod 4 to pass through.
The lower end of the opening push rod 4 penetrates through the top end of the sampling bin 1 and extends into the sampling bin 1, penetrates through a through hole in the baffle seat 3 and abuts against the bin door 15, and the upper end of the opening push rod 4 is fixedly connected with an opening handle 41. Preferably, the interior of the lower part of the sampling bin 1 is fixedly connected with a push rod fixing mechanism for limiting the position of the bin opening push rod 4, and the lower part of the bin opening push rod 4 is connected with the push rod fixing mechanism in a sliding manner. In this embodiment, the push rod fixing mechanism is a nut 42 welded inside the lower portion of the sampling bin 1, and the lower portion of the bin opening push rod 4 penetrates through the nut 42 and is slidably connected with the nut 42. Preferably, the opening push rod 4 is disposed at a hinged side of the door 15 of the sampling chamber 1, so that the door 15 can be completely opened.
Furthermore, a locking mechanism 43 for preventing the bin opening push rod 4 from moving upwards is arranged at the upper end part of the sampling bin 1; in this embodiment, the locking mechanism 43 includes a lock rod 431 and a lock hook 432, the lock rod 431 is horizontally and fixedly connected to the bin opening handle 41, the lock hook 432 is vertically and fixedly connected to the end of the upper end of the sampling bin 1, the lock hook 432 has a downward hook, and the hook of the lock hook 432 hooks the lock rod 431 to lock the bin opening push rod 4 to prevent the bin opening push rod 4 from moving upwards in the sampling process.
The method for sampling the river sludge by using the river sludge sampling device comprises the following steps:
step 1-1: closing and locking the bin cover 12 to enable the baffle seat 3 to be positioned at the bottom end of the sampling bin 1;
step 1-2: the bin opening push rod 4 is pushed downwards, the lower end of the bin opening push rod 4 applies downward force to the bin door 15, the bin door 15 is opened under stress, the bin opening push rod 4 abuts against the bin door 15, and the bin opening handle 41 is rotated, so that the lock rod 431 is locked in the lock hook 432 to fix the position of the bin opening push rod 4;
step 1-3: vertically erecting the sampling device on the surface of the river sludge, pressing the sampling bin 1 downwards through a sampling handle 13, pressing the river sludge into the sampling bin 1, and extruding and upwards moving the baffle seat 3 by the sludge;
step 1-4: when the sampling bin 1 finishes sludge sampling from the bottom of a river channel, the bin opening handle 41 is held to lift the bin opening push rod 4 upwards, the spring 16 contracts to pull the bin door 15 to close the opening at the lower end of the sampling bin 1, and then the device is lifted upwards;
step 1-5: after the device is taken out to land, the depth of the river silt can be recorded according to the scale of the sampling scale 2; the bin cover 12 is opened, so that the characteristics of the river sludge, such as color and the like, can be directly observed, and each layer of the river sludge can be directly sampled and detected;
step 1-6: after the observation, recording and sampling are completed, the discharge handle 21 is pressed down, and sludge in the sampling bin 1 is discharged out of the sampling bin 1, so that the device is convenient to use next time.
Step two: mixing the selected curing agent with water according to the proportion to form curing agent mixed solution;
in this embodiment, a sludge curing agent mixing device is used to mix the curing agent and water, and referring to fig. 4 and 5, the sludge curing agent mixing device includes a curing agent dust storage tank 5, a curing agent dust conveying mechanism 6, a curing agent stirring mechanism 7, and a water supply mechanism 8.
The curing agent dust storage tank 5 comprises a cylindrical tank body 51, the tank body 51 is supported on a tank body support 510, the tank body support 510 is placed on a cement base 50, and a weighing mechanism 501 is arranged between the cement base 50 and the tank body support 510 and used for visually monitoring the weight of curing agent dust in the tank body 51 in real time so as to facilitate accurate proportioning of the curing agent dust and water in the later period. In this embodiment, the weighing mechanism is an electronic scale. An air outlet 511 is formed in the top of the tank body 51, a pulse type bag dust collector 52 is arranged below the air outlet 511 in the tank body 51, a feed inlet 512 is formed in the bottom of the tank body 51, the feed inlet 512 is communicated with a curing agent dust conveying vehicle, and the curing agent dust conveying vehicle conveys curing agent dust into the tank body 51 after pressurizing the curing agent dust through high-pressure gas. The bottom fixedly connected with of jar body 51 leaks hopper-shaped 53, goes out the discharge gate and the curing agent dust conveying mechanism 6 intercommunication of hopper 53. Preferably, a level sensor (not shown) for detecting the curing agent dust level inside the tank 51 is disposed inside the tank 51, and the level sensor is electrically connected to a controller.
The curing agent dust conveying mechanism 6 comprises a conveying mechanism support 61 and a spiral conveyor 62 erected on the conveying mechanism support 61, wherein the spiral conveyor 62 is arranged obliquely upwards, the lower end of the spiral conveyor 62 is communicated with a discharge hole of the discharge hopper 53, and an arc-shaped cylindrical material guide pipe 63 is sleeved outside the upper end of the spiral conveyor 62.
The curing agent stirring mechanism 7 comprises a stirring mechanism support 71 and a stirrer erected on the stirring mechanism support 71, wherein the stirrer comprises a stirring cylinder 72, a cylinder cover 73 and a stirring blade assembly.
Fixed welding has annular kuppe 721 on the upper portion inner wall of churn 72, the vertical cross-section of kuppe 721 is the arc and sets up towards churn 72 center, the stirring vane subassembly at churn 72 inside center rotates the stirring, under the effect of centrifugal force, the curing agent mixture after curing agent dust and water mixture is outwards flowed by the center to churn 72, along the middle part position of curved kuppe 721 by last downflow to churn 72, thereby the cover is on the curing agent dust that floats on the surface, from this can be better mix curing agent dust and water, submit stirring efficiency, prevented simultaneously on the diffusion of curing agent dust to cover 73 at stirring in-process.
Preferably, a level sensor (not shown) is disposed in the mixing drum 72, the level sensor is electrically connected to a controller, and the level sensor detects the level of the material in the mixing drum 72 and sends an associated electrical signal to the controller. In this embodiment, two switch type level sensors are disposed in the mixing drum 72, wherein one level sensor is used for detecting the level of the immobilized dust in the mixing drum 72, and the other level sensor is used for detecting the level of the curing agent mixture in the mixing drum 72, and sends the detected related electrical signals to the controller, and the controller controls the start and stop of the motor of the screw conveyor 62 and the start and stop of the water supply mechanism 8, so as to achieve the effect of precise mixing.
The drum cover 73 is hinged on the stirring drum 72 through a hinge, the drum cover 73 is of a double-layer structure, a water cavity 731 for containing water is formed between the double-layer structure of the drum cover 73, a plurality of through holes are uniformly formed in the lower-layer structure of the drum cover 73, and a joint 732 communicated with the water cavity 731 is fixed in the center of the upper-layer structure of the drum cover 73.
The stirring blade assembly comprises a stirring shaft 74, an upper stirring blade 75 and a lower stirring blade 76, the stirring shaft 74 is vertically arranged, the stirring shaft 74 penetrates through the bottom of the stirring cylinder 72 and is connected with a motor through a speed reducer fixed at the bottom of the stirring cylinder 72, and the stirring shaft 74 is driven by the motor to rotate. The upper stirring blade 75 is fixed on the upper part of the stirring shaft 74 and consists of three curved blade 751. Lower stirring vane 76 is fixed to be set up in the lower part of (mixing) shaft 74, including connecting rod 761 and arc blade 762, connecting rod 761 one end fixed connection is on (mixing) shaft 74, other end fixed connection arc blade 762, and arc blade 762 is laminated with the inner wall of churn 72. One end that connecting rod 761 is close to (mixing) shaft 74 is provided with first reinforcement blade 763, and first reinforcement blade 763 slope sets up, and one end fixed connection is on connecting rod 761, and other end fixed connection is on (mixing) shaft 74, and the one end that connecting rod 761 is close to arc plate blade 762 is provided with second reinforcement blade 764, and second reinforcement blade 764 slope sets up, and one end fixed connection is on connecting rod 761, and other end fixed connection is on the upper portion of arc plate blade 762. The first reinforcing blade 763 and the second reinforcing blade 764 can sufficiently stir the material at the bottom of the stirring cylinder 72 while reinforcing the connection relationship between the connecting rod 761 and the stirring shaft 74.
The water supply mechanism 8 includes a water supply pipe 81 and a water pump 82, and one end of the water supply pipe 81 is connected to the joint 732, and the other end is connected to the water pump 82, and supplies water into the cylinder cover 73.
The method for mixing the curing agent and the water by using the sludge curing agent mixing device comprises the following steps:
step 2-1: the sludge curing agent transport vehicle conveys curing agent dust into the tank body 51 in a pressurizing mode, and redundant gas in the tank body 51 is discharged from the air outlet 511 after being dedusted by the pulse type bag dust collector 52, so that the environment is prevented from being polluted by the dust;
step 2-2: when the curing agent dust in the tank body 51 reaches a certain material level, the material level sensor sends a signal to the controller, a display mechanism of the controller displays related signals to a worker, and the worker instructs to stop conveying the curing agent dust into the tank body 51;
step 2-3: opening a discharge port of the discharge hopper 53, starting to convey curing agent dust into the curing agent stirring mechanism 7 by the screw conveyor 62, when the curing agent dust in the stirring cylinder 72 reaches a certain material level, sending a signal to the controller by a material level sensor for detecting the material level of the curing agent dust in the stirring cylinder 72, controlling the motor of the screw conveyor 62 to stop working by the controller, controlling the water pump 82 to start pumping water into the cylinder cover 73, and simultaneously controlling the motor of the stirrer to start working by the controller to drive the stirring blade assembly to start stirring;
step 2-4: when the liquid level of the mixing drum 72 reaches a certain liquid level, a level sensor for detecting the liquid level of the curing agent mixture in the mixing drum 72 sends a signal to a controller, and the controller controls the water pump 82 to stop supplying water into the mixing drum 72; the stirring blade component continues stirring until being directly stirred uniformly.
Step three: and (3) directly spraying the curing agent mixed solution into the river sludge in a high-pressure rotary spraying manner after pressurization, and stirring and mixing the curing agent mixed solution and the river sludge.
Specifically, in the solidification unit head of operation excavator was gone into to the curing mixture through the high-pressure pump, inside operation excavator drive solidification unit head stretched into river course silt, the solidification unit head relied on the drive assembly drive of self rotatory when stretching into silt, and the curing mixture high pressure is spouted soon and is stirred river course silt and curing agent mixture in the river course silt and mix.
Referring to fig. 6 to 10, the working excavator comprises an excavator body and a cured power head assembled on the excavator body, the power head comprising a flow splitter 9, a drill rod assembly 10, a power box 20 and a quick connector 30.
The upper end of the drill rod assembly 10 is connected to the diverter 9 through the power box 20. The flow divider 9 is fixed on the power box 20 through a fixing frame 91. The mount 91 is including setting up the channel-section steel 911 in shunt 9 both sides, and the vertical setting of two channel-section steels 911 and the recess of two channel-section steels 911 set up relatively, and the bottom welding of channel-section steel 911 is on headstock 20, and shunt 9 is through the round steel 912 fixed connection of level setting on two channel-section steels 911. The flow divider 9 is provided with a liquid inlet hole 92 and an air inlet hole 93, the flow divider 9 is respectively connected with an external high-pressure pump and an external air compressor through the liquid inlet hole 92 and the air inlet hole 93, and the flow divider 9 respectively conveys the high-pressure curing agent mixed liquid and the compressed air conveyed by the high-pressure pump and the air compressor to the interior of the drill rod assembly 10.
The drill rod assembly 10 is connected to the diverter 9 by a box 90. Drill rod assembly 10 includes drilling rod 101 and drill bit 102 of setting in drilling rod 101 bottom, and drilling rod 101 is double drilling rod 101, includes inner tube 1011 and the outer tube 1012 of cover outside inner tube 1011, forms airtight annular space between inner tube 1011 and the outer tube 1012. The side wall of the bottom of the inner tube 1011 is symmetrically provided with two threaded holes by taking the center of the inner tube 1011 as a symmetrical center, and the two threaded holes are communicated with the inside of the inner tube 1011; two air nozzles 1017 are arranged on the side wall of the bottom of the outer pipe 1012 at positions corresponding to the two threaded holes, a nozzle 1016 is screwed on the threaded holes, the nozzle 1016 penetrates through the air nozzles 1017 and extends to the outside of the outer pipe 1012, and the opening of the air nozzles 1017 is larger than the outer diameter of the nozzle 1016. The high-pressure curing agent mixed liquid shunted by the shunt 9 is pressed into the inner pipe 1011 and is sprayed out from the nozzle 1016; the compressed air branched by the separator is pressed into an annular space between the inner pipe 1011 and the outer pipe 1012 and is ejected from the air tap 1017.
Preferably, drilling rods 101 are multiple, two adjacent drilling rods 101 are connected through male joint 20, nozzle 1016 and air nozzle 1017 are arranged at the bottom of the lowest drilling rod 101, and drilling rods 101 are arranged into multiple numbers, so that replacement and maintenance are facilitated when nozzle 1016 or air nozzle 1017 is blocked. In this embodiment, the number of the drill rods 101 is two. It should be noted that the length and number of drill rods 101 may be determined according to the depth of the river sludge, and are not limited to two drill rods 101 in the embodiment.
The drill bit 102 is an alloy drill bit 102. Preferably, an agitation blade 1013 is removably attached to the outside of the lower portion of drill rod 101 of drill rod assembly 10 above nozzle 1016.
The drill rod assembly 10 is fixedly connected to the bottom end of the power box 20 by a holder 103 below the power box 20 and is maintained in a vertical state. Specifically, the holder 103 includes a sleeve 1031 and three struts 1032, the sleeve 1031 is rotatably sleeved on the outer side of the drill rod 101, the three struts 1032 are arranged in a triangle, the lower ends of the three struts 1032 are fixedly connected to the sleeve 1031, and the upper ends of the three struts are fixedly connected to the bottom of the power box 20, so as to maintain the vertical position of the drill rod 101 of the drill rod assembly 10.
The drill rod assembly 10 is driven for rotation by a drive assembly within the power box 20.
The drill rod assembly 10 is characterized in that a shaft sleeve 40 is sleeved on the outer side of the part in the power box 20, a shaft cover 401 is fixedly connected to the top end of the shaft sleeve 40, a shaft sleeve gear 402 is sleeved on the outer side of the upper part of the shaft sleeve 40, an internal spline 403 is embedded on the inner side of the lower part of the shaft sleeve 40, and an external spline 1014 matched with the internal spline 403 is arranged on the drill rod 101 corresponding to the internal spline 403. A spring 1015 is disposed on drill pipe 101 between shaft cap 401 and external spline 1014 to cushion the recoil force generated by the downward drilling of drill pipe 101. A locking nut 404 and an anti-slip nut 405 are sequentially screwed on the drill pipe 101 below the shaft sleeve 40 to limit and fix the position of the shaft sleeve 40.
The driving assembly comprises two hydraulic motors 201 which are symmetrical left and right by taking the shaft sleeve 40 as a center, the rotating shafts of the two hydraulic motors 201 are connected with motor gears 202, and the two motor gears 202 are respectively meshed with a shaft sleeve gear 402; hydraulic motor 201 is activated to rotate sleeve 40 via motor gear 202 and sleeve gear 402, and to rotate drill rod assembly 10 via the splined engagement of internal splines 403 on sleeve 40 and external splines 1014 on drill rod 101.
The quick connector 30 is fixedly connected to the side surface of the power box 20 through a fixing plate, so that the power head can be quickly and effectively assembled on power equipment such as an excavator 30.
The method for stirring and mixing the curing agent mixed liquor and the river sludge by using the operation excavator comprises the following steps:
the excavator body drives the curing power head to move to a river channel section to be mixed and drives the curing power head to vertically move downwards to stretch into river channel sludge;
starting a high-pressure pump, pressurizing the curing agent mixed solution and pumping the curing agent mixed solution into a curing power head;
the curing power head is driven by the driving assembly to move downwards and rotate, and the pressurized curing agent mixed liquid is sprayed out from the nozzle 1016 until the depth of the sludge in the step two is reached;
the air compressor is started, compressed air is sprayed out from the air nozzle 1017, and the area of stirring and mixing of the curing agent mixed liquid and the river sludge is enlarged.
Step four: and (4) producing solidified soil after the river channel sludge is solidified, digging out the solidified soil in the river channel by using digging equipment such as a digging machine and the like, and transporting the solidified soil to a specified position.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (3)
1. The river sludge solidification treatment process is characterized by comprising the following steps: the method comprises the following steps:
pretreatment: pumping surface water in the river channel completely by adopting water pumping equipment until sludge at the bottom of the river channel is exposed;
the method comprises the following steps: depth measurement is carried out on sludge of a river channel section to be solidified to obtain the depth of the sludge of the river channel section, the sludge of the river channel section is sampled to obtain a sludge sample, and the sludge sample is tested and analyzed to obtain the components and the water content of the sludge of the river channel section;
step two: selecting the type of a curing agent according to the components of the sludge obtained in the step one, determining the proportion of the curing agent to water according to the water content of the sludge obtained in the step one, and mixing the selected curing agent and water according to the proportion to form a curing agent mixed solution;
step three: directly and horizontally spraying the curing agent mixed solution into the sludge of the river channel in a high-pressure rotary spraying mode after pressurization, and enabling the curing agent mixed solution to reach the depth of the sludge measured in the step one;
step three, stirring and mixing the curing agent mixed liquid and the river sludge by adopting an operation excavator, wherein the operation excavator comprises an excavator body and a curing power head assembled on the excavator body, and the curing power head comprises a flow divider (9), a drill rod assembly (10), a power box (20) and a quick connector (30); the upper end of the drill rod component (10) passes through the power box (20) and is connected with the flow divider (9); the flow divider (9) is connected with an external high-pressure pump and an external air compressor; the drill rod component (10) comprises a drill rod (101) and a drill bit (102) arranged at the bottom end of the drill rod (101), the drill rod (101) is a double drill rod, a nozzle (1016) communicated with the inside of the inner tube (1011) is arranged at the bottom of the inner tube (1011) of the drill rod (101), an air tap (1017) is arranged at the position, corresponding to the nozzle (1016), of the bottom of the outer tube (1012) of the drill rod (101), the nozzle (1016) penetrates through the air tap (1017) to extend to the outside of the outer tube (1012), the opening of the air tap (1017) is larger than the outer diameter of the nozzle (1016), high-pressure liquid conveyed by the high-pressure pump is pressed into the, compressed air conveyed by an air compressor is pressed into an annular space between an inner pipe (1011) and an outer pipe (1012) through a flow divider, a drill rod assembly (10) is driven to rotate through a driving assembly in a power box (20), and a quick connector (30) is fixedly connected to the side surface of the power box (20) to fixedly connect a curing power head to an excavator body; the method for stirring and mixing the curing agent mixed liquor and the river sludge by using the operation excavator comprises the following steps:
the excavator body drives the curing power head to move to a river channel section to be mixed and drives the curing power head to vertically move downwards to stretch into river channel sludge;
starting a high-pressure pump, pressurizing the curing agent mixed solution and pumping the curing agent mixed solution into a curing power head;
the curing power head is driven by the driving assembly to move downwards and rotate, and the pressurized curing agent mixed liquid is sprayed out from the nozzle (1016) until the depth of the sludge in the step one is reached;
starting an air compressor, and ejecting compressed air from an air nozzle (1017) to enlarge the stirring and mixing area of the curing agent mixed liquid and the river sludge;
step four: and (4) producing solidified soil after the river sludge is solidified, and excavating the solidified soil in the river by using excavating equipment and transporting the solidified soil to a specified position.
2. The river sludge solidification treatment process according to claim 1, wherein: the first step comprises the following substeps:
s1: selecting a plurality of position points as test points on a river channel section to be cured;
s2: vertically inserting sampling devices into the test points respectively until the sampling devices cannot be inserted downwards manually, lifting the sampling devices after marking the insertion depth, taking out sludge in the sampling devices, testing the components and the water content of the sludge, and recording the depth, the components and the water content of the sludge in the river channel of the position points respectively;
s3: according to the recorded depth, components and water content of the river channel sludge of each test point, averaging according to the sum of the depths of the river channel sludge of each test point to calculate the average depth of the river channel sludge of the river channel section, obtaining the total components of the river channel sludge of the river channel section according to the components of the river channel sludge of each comprehensive position point, and obtaining the average water content of the river channel section sludge of the river channel section according to the averaging method of the sum of the water content of the river channel sludge of each test point;
s4: obtaining the depth of the solidification stirring extension according to the average depth of the river sludge; selecting the type of a curing agent adopted by a curing process according to the total components of the river sludge; and obtaining the ratio of the curing agent to the water according to the average water content of the river sludge.
3. The river sludge solidification treatment process according to claim 1, wherein: in the second step, a river sludge sampling device is used for measuring the depth of river sludge and sampling sludge, and the river sludge sampling device comprises a sampling bin (1), a sampling scale (2), a baffle seat (3) and a bin opening push rod (4); an observation hole (11) is formed in the sampling bin (1) along the length direction of the sampling bin (1), a bin cover (12) for opening and closing the observation hole (11) is hinged to the side edge of the observation hole (11) in the sampling bin (1), a sampling handle (13) is fixedly connected to the upper end of the sampling bin (1), a bin door (15) for opening and closing the lower end opening of the sampling bin is hinged to the lower end of the sampling bin (1), and the bin door (15) is in a closed state under the condition that no external force exists in the bin door (15) through a contraction mechanism; the lower end of the sampling scale (2) extends into the sampling bin (1) and is fixedly connected with the baffle seat (3), the baffle seat (3) is in sliding close fit with the inner wall of the sampling bin (1), the upper end of the sampling scale (2) is fixedly connected with a discharge handle (21), and scales for measuring the depth of river silt are marked on the sampling scale (2); the lower end of the bin opening push rod (4) extends into the sampling bin (1), penetrates through the baffle seat (3) and abuts against the bin door (15), and the upper end of the bin opening push rod (4) is fixedly connected with a bin opening handle (41); the method for simultaneously carrying out depth measurement and sampling on the river sludge by using the river sludge sampling device comprises the following steps:
closing and locking the bin cover (12) to enable the baffle seat (3) to be positioned at the bottom end of the sampling bin (1);
the bin opening push rod (4) is pushed downwards, the lower end of the bin opening push rod (4) applies downward force to the bin door (15), the bin door (15) is opened under the force, and the bin opening push rod (4) props against the bin door (15);
vertically erecting the sampling device on the surface of the river sludge, pressing down the sampling bin (1) through a sampling handle (13), pressing the river sludge into the sampling bin (1), and extruding and moving up the baffle seat (3) by the sludge;
when the sampling bin (1) finishes sludge sampling at the bottom of a riverway, the bin opening handle (41) is held to lift the bin opening push rod (4), the contraction mechanism contracts and pulls the bin door (15) to close the lower end opening of the sampling bin (1), and then the sampling device is lifted upwards;
after the sampling device extracts the river silt to land, recording the depth of the river silt according to the scale of the sampling scale (2); opening the bin cover (12), and sampling and detecting each layer of the river sludge;
after the recording and sampling are finished, the discharge handle (21) is pressed down, and sludge in the sampling bin (1) is discharged out of the sampling bin (1).
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| CN110080204A (en) * | 2019-04-08 | 2019-08-02 | 河海大学 | A kind of waste soil original position filler cloth mixing apparatus and construction method |
| CN112878299A (en) * | 2021-01-09 | 2021-06-01 | 大地巨人(北京)工程科技有限公司 | Sludge solidification reinforced composite foundation treatment method |
| CN113373999B (en) * | 2021-06-23 | 2023-01-03 | 中铁二局集团建筑有限公司 | Reinforced concrete pipe culvert dredging method |
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