CN111424696A - Barrier wall construction device and method for repairing soil and underground water - Google Patents
Barrier wall construction device and method for repairing soil and underground water Download PDFInfo
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- CN111424696A CN111424696A CN202010267803.9A CN202010267803A CN111424696A CN 111424696 A CN111424696 A CN 111424696A CN 202010267803 A CN202010267803 A CN 202010267803A CN 111424696 A CN111424696 A CN 111424696A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/16—Restraining of underground water by damming or interrupting the passage of underground water by placing or applying sealing substances
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- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
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- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention discloses a barrier wall construction device and a method for repairing soil and underground water, which comprises a central control chamber, a curing agent storage tank, a solution storage tank, an additive storage tank, a steam generator and a vertical water storage tank, wherein a vertical four-axis blade type stirring kettle and a three-axis parallel sleeve type spiral stirring pile are electrically connected with the central control chamber, a curing agent and a solution with a special proportion are pumped from the respective storage tanks according to a certain mass ratio to enter the vertical four-axis blade type stirring kettle for mixing to prepare curing agent slurry, then the slurry is pumped into a sleeve by a flow pump, the slurry is injected into the deep soil by a spiral shaft, the longitudinal plugging and pulling of the stirring pile in the invention are controlled by a motor, the transverse displacement is controlled by a gear guide rail, the slurry amount, the injection of water vapor and water are controlled by a precise flow pump, the construction precision is greatly improved, and simultaneously, the site and climate adaptability of the barrier wall construction device are improved.
Description
Technical Field
The invention relates to the field of soil environment restoration, in particular to a barrier wall construction device and method for restoring soil and underground water.
Background
The soil remediation is a technical measure for restoring the normal function of polluted soil, the existing soil remediation technology reaches more than one hundred in the soil remediation industry, the common technology is more than ten, the technology can be roughly divided into three methods of physics, chemistry and biology, and since the 20 th century and the 80 th year, a polluted soil treatment and remediation plan is established and developed in many countries in the world, particularly developed countries, so that a new soil remediation industry is formed. China is one of the most serious countries of global soil pollution, according to the survey bulletin of national soil pollution situation issued in 2014, the general state of the soil environment of China is not optimistic, the national soil pollution exceeding rate reaches 16.1%, the soil environment quality of cultivated land is more embarrassed while the soil environment problem of the abandoned land in the industrial and mining industry is outstanding, the national legislation speed is obviously accelerated in the face of the serious situation of soil pollution, the environmental protection department additionally adds the content of soil remediation in the new environmental protection law, and also previously publishes a new soil environment quality standard (solicited opinions draft), the formulation and implementation of a soil pollution control action plan (abbreviated as 'ten items') are also proposed, the large-scale soil pollution exceeding rate is promoted by the national legislation, the industry is expected to promote the generation of a trillion-level soil remediation market, however, compared with the air pollution control treatment which is already developed, the soil remediation is still in the starting stage, the soil remediation is urgent, and the technology in the field of soil remediation is urgently needed to be broken through. The construction of the barrier wall aiming at soil restoration is a premise of proper restoration of soil, however, the construction of the existing barrier wall has the problems of inaccurate slurry injection amount, difficult adjustment of distance between piles, weak construction pertinence aiming at the soil with specific different water contents, weak applicability to extremely cold weather in winter and the like.
Disclosure of Invention
The invention aims to provide a barrier wall construction device and a method for repairing soil and underground water, which are used for solving the problems in the prior art, improving the construction precision and enhancing the field and climate adaptability of the barrier wall construction device.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a barrier wall construction device and a method for repairing soil and underground water, wherein the barrier wall construction device for repairing soil and underground water comprises a central control room, a curing agent storage tank, a solution storage tank, an additive storage tank, a steam generator, a vertical water storage tank, a vertical four-axis blade type stirring kettle and a three-axis parallel sleeve type spiral stirring pile, wherein the vertical four-axis blade type stirring kettle and the three-axis parallel sleeve type spiral stirring pile are electrically connected with the central control room;
the curing agent storage tank, the solution storage tank and the additive storage tank are respectively connected with the vertical four-axis blade type stirring kettle through independent pipelines, each independent pipeline is respectively and sequentially provided with an electromagnetic valve, a flow pump and a flow meter, the electromagnetic valve, the flow pump and the flow meter are respectively and electrically connected with the central control room, and the adding amount is controlled through the central control room;
the steam generator is connected with the steam storage tank through an independent pipeline, high-temperature water steam generated by the steam generator is stored in the steam storage tank through the independent pipeline, an electromagnetic valve and a fan are sequentially installed on the independent pipeline between the steam generator and the steam storage tank, the electromagnetic valve and the fan are electrically connected with the central control room, and the steam storage tank is a double-layer vacuum stainless steel heat insulation storage tank;
the steam storage tank and the vertical water storage tank are respectively connected with the three-shaft parallel sleeve type spiral stirring pile through independent pipelines, each independent pipeline is provided with an electromagnetic valve and a flow pump, and the electromagnetic valves and the flow pumps are respectively and electrically connected with the central control room.
Preferably, install two sets of vertical four-axis stirring rakes in the vertical four-axis blade type stirred tank, the four-axis stirring rake includes four stirring rake axles, four the stirring rake axle symmetry setting of straying, install the motor on the stirring rake axle, epaxial motor and the well accuse room electric connection of stirring rake, the epaxial six pages of oblique oars that install two symmetries and set up of stirring rake.
Preferably, the triaxial parallel sleeve type helical mixing pile comprises three helical shafts which are installed in parallel, a transmission motor, a gear disc and a sleeve are sequentially installed on the helical shafts from top to bottom, the transmission motor is in shaft connection with the helical shafts through a transmission shaft, a central control room is electrically connected with the transmission motor, the central control room controls the transmission motor to realize longitudinal movement of the triaxial parallel sleeve type helical mixing pile, the gear disc is installed on the upper portion of the helical shafts through bearings, the sleeve is installed on the lower portion of the gear disc, two ends of the gear disc are respectively connected with gear guide rails in a meshed mode, the gear motor is installed on the gear disc, the gear motor on the gear disc is electrically connected with the central control room, and the central control room controls the gear disc to realize accurate control of transverse displacement of the triaxial parallel sleeve type helical mixing pile.
Preferably, the top of the sleeve is closed and fixedly connected to the bottom of the gear disc, a slurry pipeline is connected between the sleeve and the vertical four-shaft blade type stirring kettle, a steam pipeline is connected between the sleeve and the steam storage tank, and a water feeding pipeline is connected between the sleeve and the vertical water storage tank.
Preferably, the steam storage tank and the vertical water storage tank are respectively connected with the top of the sleeve through independent pipelines.
A method for constructing a barrier wall for repairing soil and underground water comprises the steps of pumping a curing agent and solutions with special proportions into a vertical four-axis blade type stirring kettle according to a certain mass ratio, mixing to prepare curing agent slurry, pumping the slurry into a sleeve by a flow pump, and injecting the slurry into the deep soil by a screw shaft.
Preferably, in the method, when soil with low water content is met, water is injected into the soil from the vertical water storage tank through a water supply pipeline on the sleeve, and the water content of the soil is adjusted; when the device works in extremely cold weather in winter, if the field operation is difficult due to soil freezing, water vapor is injected into the sleeve to melt the frozen soil.
Preferably, the curing agent is a powdered modified silicate material.
Preferably, the solution with the special proportion is an aqueous solution added with relevant medicaments.
Preferably, the mass ratio of the curing agent to the solution with the special proportion is 0.1-1.0.
Compared with the prior art, the invention has the following specific beneficial effects: (1) the longitudinal plugging and unplugging of the spiral mixing pile are controlled by a motor, the transverse displacement is controlled by a gear guide rail, the slurry amount, the steam and the water are all controlled by a precise flow pump, and the construction precision is greatly improved; (2) by injecting water and vapor into the sleeve of the spiral stirring pile, the site and climate adaptability of the barrier wall construction device are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural view of a barrier wall construction apparatus for soil and groundwater remediation according to the present invention;
FIG. 2 is a schematic structural view of a sleeve-type helical mixing pile according to the present invention;
FIG. 3 is a schematic structural view of a six-blade diagonal paddle according to the present invention;
FIG. 4 is a schematic view of the construction of a propeller shaft according to the present invention;
the device comprises a curing agent storage tank 1, a solution storage tank 2, an additive storage tank 3, an electromagnetic valve 4, a flow pump 5, a flow meter 6, a vertical four-axis blade type stirring kettle 7, a central control chamber 8, a fan 9, a steam generator 10, a vertical water storage tank 11, a steam storage tank 12, a three-axis parallel sleeve type spiral stirring pile 13, a gear guide rail 14, a transmission motor 15, a gear disc 16, a spiral shaft 17, a sleeve 18, six-page inclined paddles 19, a stirring paddle shaft 20, a slurry pipeline 21, a steam pipeline 22 and a water supply pipeline 23.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example 1
Referring to fig. 1-4, the invention provides a barrier wall construction device for soil and groundwater remediation, which comprises a central control room 8, a curing agent storage tank 1, a solution storage tank 2, an additive storage tank 3, a steam storage tank 12, a steam generator 10, a vertical water storage tank 11, a vertical four-axis blade type stirring kettle 7 electrically connected with the central control room 8 and a three-axis parallel sleeve type spiral stirring pile 13;
the curing agent storage tank 1, the solution storage tank 2 and the additive storage tank 3 are respectively connected with a vertical four-axis blade type stirring kettle 7 through independent pipelines (not shown in the figure), each independent pipeline is respectively and sequentially provided with an electromagnetic valve 4, a flow pump 5 and a flow meter 6, the electromagnetic valve 4, the flow pump 5 and the flow meter 6 are respectively and electrically connected with a central control room 8, and the adding amount is controlled through the central control room 8;
the steam generator 10 is connected with a steam storage tank 12 through an independent pipeline, high-temperature water vapor generated by the steam generator 10 is stored in the steam storage tank 12 through the independent pipeline, an electromagnetic valve 4 and a fan 9 are sequentially installed on the independent pipeline between the steam generator 10 and the steam storage tank 12, the electromagnetic valve 4 and the fan 9 are electrically connected with a central control room 8, and the steam storage tank 12 is a double-layer vacuum stainless steel heat insulation storage tank;
the steam storage tank 12 and the vertical water storage tank 11 are respectively connected with a three-axis parallel sleeve type spiral stirring pile 13 through independent pipelines, each independent pipeline is provided with an electromagnetic valve 4 and a flow pump 5, and the electromagnetic valve 4 and the flow pump 5 are respectively and electrically connected with the central control room 8.
Two groups of vertical four-axis stirring paddles (not shown in the figure) are installed in the vertical four-axis blade type stirring kettle 7, each four-axis stirring paddle comprises four stirring paddle shafts 20, the four stirring paddle shafts 20 are symmetrically arranged in a staggered mode, a motor (not shown in the figure) is installed on each stirring paddle shaft 20, the motor on each stirring paddle shaft 20 is electrically connected with the central control room 8, and two six pages of inclined paddles 19 which are symmetrically arranged are installed on each stirring paddle shaft 20.
The triaxial parallel sleeve type spiral mixing pile 13 comprises three spiral shafts 17 which are arranged in parallel, the screw shaft 17 is provided with a transmission motor 15, a gear disc 16 and a sleeve 18 from top to bottom in sequence, the transmission motor 15 is coupled with the screw shaft 17 through a transmission shaft, the central control chamber 8 is electrically connected with the transmission motor 15, the central control room 8 controls the transmission motor 15 to realize the longitudinal movement of the three-axis parallel sleeve type spiral mixing pile 13, the gear disc 16 is arranged at the upper part of the screw shaft 17 through a bearing, the sleeve 18 is arranged at the lower part of the gear disc 16, two ends of the gear disc 16 are respectively engaged with gear guide rails 14, a gear motor (not shown) is mounted on the gear disc 16, the gear motor on the gear disc 16 is electrically connected with the central control room 8, and the central control room 8 controls the gear disc 16 to realize the accurate control of the transverse displacement of the triaxial parallel sleeve type spiral mixing pile 13.
The top of the sleeve 18 is sealed and fixedly connected to the bottom of the gear disc 16, a slurry pipeline 21 is connected between the sleeve 18 and the vertical four-axis blade type stirring kettle 7, a steam pipeline 22 is connected between the sleeve 18 and the steam storage tank 12, and a water feeding pipeline 23 is connected between the sleeve 18 and the vertical water storage tank 11.
The steam storage tank 12 and the vertical water storage tank 11 are respectively connected with the top of the sleeve 18 through independent pipelines.
A method for constructing a barrier wall aiming at soil and underground water remediation comprises the steps of pumping a curing agent and solutions with special proportions into a vertical four-axis blade type stirring kettle 7 according to a certain mass ratio, mixing to prepare curing agent slurry, then conveying the slurry into a sleeve 18 by a flow pump 5, and injecting the slurry into the deep soil by a screw shaft 17.
In the method, when soil with low water content is met, water is injected into the soil from the vertical water storage tank 11 through the water supply pipeline 23 on the sleeve 18, and the water content of the soil is adjusted; when working in extremely cold weather in winter, and the field operation is difficult due to soil freezing, water vapor is injected into the sleeve 18 to melt the frozen soil.
The curing agent is a powdery modified silicate material.
The solution with the special proportion is an aqueous solution added with related medicaments.
The mass ratio of the curing agent to the solution with the special proportion is 0.1-1.0.
Example 2
Taking a certain place in Anhui province as an example, obtaining the construction depth and soil characteristics of a barrier wall based on hydrogeological exploration results, determining that the mass ratio of a curing agent to a solution in a curing agent slurry is 0.5, the depth of the barrier wall is 13m, 1000kg of curing agent and 2000kg of solution are respectively stored in a curing agent storage tank 1 and a solution storage tank 2, and are conveyed into a vertical four-axis blade type stirring kettle 7 through independent pipelines under the control of an electromagnetic valve 4, a flow pump 5 and a flow meter 6.
The rotating speed of the stirring paddle shaft 20 in the vertical four-shaft blade type stirring kettle 7 is set to be 100r/min, the directions of the four stirring paddle shafts 20 are set to be that the longitudinal two stirring paddle shafts are clockwise, the transverse two stirring paddle shafts 20 are anticlockwise, the stirring time is 30min, the stirring paddle shafts 20 are provided with motors, the rotating speed and the stirring direction of the stirring paddle shafts 20 are controlled through a central control room 8, a slurry pipeline 21 is arranged at the bottom of the vertical four-shaft blade type stirring kettle 7 and connected with a sleeve 18 of a three-shaft parallel sleeve type spiral stirring pile 13, one end, close to the stirring kettle, of the slurry pipeline 21 is provided with a flow pump 5 and an electromagnetic valve 4, curing agent slurry is pumped into the corresponding three-shaft parallel sleeve type spiral stirring pile 13 through the central control room 8, and the flow.
The length of the three-axis parallel sleeve type spiral stirring pile 13 is 15m, the axial distance of the three cylindrical spiral stirring piles is set to be 50cm through a gear disc 16 and a gear guide rail 14, the inner diameter of a sleeve 18 is 50cm, the nominal diameter of an internal spiral shaft 17 is 35cm, the rotating speed of the spiral shaft 17 is 20r/min, the transverse moving speed is 0.5m/min, and the longitudinal moving speed is 0.5m/min, as the stirring piles move longitudinally, blades on the spiral shaft 17 crush soil, a curing agent slurry in the sleeve 18 is mixed with the crushed soil, the spiral shaft 17 moves downwards and simultaneously injects the mixture of the soil and the slurry into a field, and finally the construction of the barrier wall is completed.
Meanwhile, in consideration of the requirement of the water content of the soil in the site, a vertical water storage tank 11 is adopted to supply water to the soil in the mixing pile, the water content of the soil is adjusted, the water supply flow is 20L/min, the vertical water storage tank 11 is connected with a three-shaft parallel sleeve type spiral mixing pile 13 through a water supply pipeline 23, a flow pump 5 and a flow meter 6 are installed on the water storage tank side of the water supply pipeline 23, and a central control room 8 is used for controlling the water supply amount.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (10)
1. The utility model provides a separate wall construction equipment to soil and groundwater is restoreed which characterized in that: comprises a central control room (8), a curing agent storage tank (1), a solution storage tank (2), an additive storage tank (3), a steam storage tank (12), a steam generator (10) and a vertical water storage tank (11), a vertical four-axis blade type stirring kettle (7) electrically connected with the central control room (8) and a three-axis parallel sleeve type spiral stirring pile (13);
the curing agent storage tank (1), the solution storage tank (2) and the additive storage tank (3) are respectively connected with the vertical four-axis blade type stirring kettle (7) through independent pipelines, each independent pipeline is respectively and sequentially provided with an electromagnetic valve (4), a flow pump (5) and a flow meter (6), the electromagnetic valve (4), the flow pump (5) and the flow meter (6) are respectively and electrically connected with the central control room (8), and the adding amount is controlled through the central control room (8);
the steam generator (10) is connected with the steam storage tank (12) through an independent pipeline, high-temperature water vapor generated by the steam generator (10) is stored in the steam storage tank (12) through the independent pipeline, an electromagnetic valve (4) and a fan (9) are sequentially installed on the independent pipeline between the steam generator (10) and the steam storage tank (12), the electromagnetic valve (4) and the fan (9) are electrically connected with the central control chamber (8), and the steam storage tank (12) is a double-layer vacuum stainless steel heat insulation storage tank;
the steam storage tank (12) and the vertical water storage tank (11) are respectively connected with a three-shaft parallel sleeve type spiral stirring pile (13) through independent pipelines, each independent pipeline is provided with an electromagnetic valve (4) and a flow pump (5), and the electromagnetic valve (4) and the flow pump (5) are respectively electrically connected with the central control room (8).
2. A barrier wall construction apparatus for soil and groundwater remediation according to claim 1, wherein: install two sets of vertical four-axis stirring rake in vertical four-axis blade type stirred tank (7), the four-axis stirring rake includes four stirring rake axle (20), four stirring rake axle (20) symmetry straggly setting, install the motor on stirring rake axle (20), motor and central control room (8) electric connection on the stirring rake axle (20), install six page of oblique oars (19) that two symmetries set up on stirring rake axle (20).
3. A barrier wall construction apparatus for soil and groundwater remediation according to claim 1, wherein: the three-shaft parallel sleeve type spiral stirring pile (13) comprises three parallel-mounted spiral shafts (17), a transmission motor (15), a gear disc (16) and a sleeve (18) are sequentially mounted on each spiral shaft (17) from top to bottom, the transmission motor (15) is in shaft connection with the spiral shafts (17) through a transmission shaft, a central control chamber (8) is electrically connected with the transmission motor (15), the central control chamber (8) controls the transmission motor (15) to realize longitudinal movement of the three-shaft parallel sleeve type spiral stirring pile (13), the gear disc (16) is mounted on the upper portion of each spiral shaft (17) through a bearing, the sleeve (18) is mounted on the lower portion of the gear disc (16), two ends of the gear disc (16) are respectively in meshing connection with gear guide rails (14), the gear motor is mounted on the gear disc (16), and the gear motor on the gear disc (16) is electrically connected with the central control chamber (8), and the central control room (8) controls the gear disc (16) to realize the accurate control of the transverse displacement of the three-shaft parallel sleeve type spiral mixing pile (13).
4. A barrier wall construction apparatus for soil and groundwater remediation according to claim 3, wherein: the top of sleeve (18) is airtight and the rigid coupling is in the bottom of toothed disc (16), be connected with thick liquid pipeline (21) between sleeve (18) and vertical four-axis blade type stirred tank (7), be connected with steam conduit (22) between sleeve (18) and steam storage tank (12), be connected with water supply pipe (23) between sleeve (18) and vertical water storage tank (11).
5. A barrier wall construction apparatus for soil and groundwater remediation according to claim 4, wherein: the steam storage tank (12) and the vertical water storage tank (11) are respectively connected with the top of the sleeve (18) through independent pipelines.
6. A method for constructing a barrier wall for repairing soil and underground water is characterized by comprising the following steps: the method comprises the steps of pumping a curing agent and solutions with special proportions from respective storage tanks according to a certain mass ratio into a vertical four-axis blade type stirring kettle (7) for mixing to prepare curing agent slurry, then feeding the slurry into a sleeve (18) by a flow pump (5), and injecting the slurry into the deep soil by a screw shaft (17).
7. A method of constructing a barrier wall for soil and groundwater remediation according to claim 6, wherein: in the method, when soil with low water content is met, water is injected into the soil from the vertical water storage tank (11) through a water supply pipeline (23) on the sleeve (18) to adjust the water content of the soil; when the field operation is difficult due to soil freezing in the extremely cold weather in winter, water vapor is injected into the sleeve (18) to melt the frozen soil.
8. A method of constructing a barrier wall for soil and groundwater remediation according to claim 6, wherein: the curing agent is a powdery modified silicate material.
9. A method of constructing a barrier wall for soil and groundwater remediation according to claim 8, wherein: the solution with the special proportion is an aqueous solution added with related medicaments.
10. A method of constructing a barrier wall for soil and groundwater remediation according to claim 9, wherein: the mass ratio of the curing agent to the solution with the special proportion is 0.1-1.0.
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| CN202010267803.9A CN111424696B (en) | 2020-04-08 | 2020-04-08 | Barrier wall construction device for repairing soil and underground water |
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| CN114541450A (en) * | 2022-03-03 | 2022-05-27 | 北京中岩大地环境科技有限公司 | Barrier wall construction device and construction method thereof |
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