CN217638258U - Hollow cylinder sample preparation device based on soybean urease solidification silt - Google Patents
Hollow cylinder sample preparation device based on soybean urease solidification silt Download PDFInfo
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- CN217638258U CN217638258U CN202221390806.2U CN202221390806U CN217638258U CN 217638258 U CN217638258 U CN 217638258U CN 202221390806 U CN202221390806 U CN 202221390806U CN 217638258 U CN217638258 U CN 217638258U
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Abstract
The utility model relates to a hollow cylinder sample preparation device based on soybean urease solidification silt, including the bottom, annotate the liquid top cap and install inner tube and urceolus of establishing with one heart the cover between the bottom and annotate the liquid top cap, enclose into the annular space that is used for preparing the hollow cylinder sample between inner tube and the urceolus, its characterized in that annotates the liquid top cap including the notes liquid chamber that is located the top, and the upper portion central authorities department of annotating the liquid chamber is equipped with the inlet, and inlet department is equipped with the notes liquid pipe that upwards extends, and the bottom of annotating the liquid chamber is equipped with from central department along the grout groove of radial distribution, every grout groove with annotate length direction interval along the grout groove in one section that the liquid chamber overlaps and set up a plurality of grout holes, grout hole runs through to the lower surface of annotating the liquid top cap downwards in order to be used for annotating liquid intracavity filling liquid. Can carry out even solidification, system appearance device and feed pipe butt joint convenient and fast, the notes liquid precision is higher to hollow cylinder sample.
Description
Technical Field
The utility model relates to a hollow cylinder sample preparation device based on soybean urease solidification silt.
Background
The biological mineralization technology is a new soil solidification technology which attracts much attention in the research of geotechnical engineering, and the biological solidification technology mainly utilizes the metabolism function of microorganisms widely existing in the nature to generate enzymes, and the enzymes and other substances in the environment generate a series of biochemical reactions to change the physical mechanics and engineering properties of the soil, so that the purposes of environment purification, soil remediation, foundation treatment and the like are achieved. The technology directly utilizes small-sized free urease, is not easy to cause biological blockage in the soil body, and can penetrate through the soil body with fine particles more easily; and the free urease is degradable, so that long-term influence on the environment is avoided. Urease extracted from soybean urease replaces chemical products, has the advantages of cleanness, environmental protection, low energy consumption, small disturbance to soil, uniform treatment and the like, and is very in line with the strategic target of national sustainable development.
At present, most of researches on mechanical properties of the sand solidified by the biological urease-induced calcium carbonate are carried out by unconfined compressive strength instruments and static and dynamic triaxial instruments, and complicated stress paths such as main stress rotation and the like cannot be simulated. Relevant research results indicate that the non-coaxial characteristic of the soil body under the continuous rotation of the main stress is ubiquitous, the non-coaxial characteristic has a remarkable influence on the design and analysis of geotechnical engineering, and the design without considering the influence of the non-coaxial characteristic of the soil body is unsafe. In order to deeply research the dynamic characteristics of the soybean urease-induced calcium carbonate solidified yellow river sediment under a complex stress path, a sample is prepared by means of a hollow cylindrical die matched with a GDS hollow cylindrical torsion shear apparatus, the GDS hollow cylindrical torsion shear apparatus is equipment capable of performing a main stress rotation test, and can simultaneously and independently apply axial force and torque, internal pressure and external pressure values to a soil sample, so that the direction of the large main stress can be changed while the size of the main stress value is changed, and the direction change is not limited to continuously rotate on a fixed plane vertical to the middle main stress; and to soybean urease solidification yellow river silt, need consider in the sample preparation process that sample size and relative compactness, soybean urease and cementing liquid are evenly irritated sample storehouse and the timely discharge of reaction waste liquid, the hollow cylinder mould that the hollow cylinder torsional shear appearance of above-mentioned GDS supporting can't realize.
To this end, the chinese patent application publication No. CN112747983A discloses a hollow cylindrical sample preparation device for microorganism solidified sandy soil and a use method thereof, which comprises a base, an inner cylinder, an outer cylinder, an injection cap and the like, wherein the inner cylinder, the outer cylinder and an annular support seat form a sample bin, and an injection channel, namely a liquid discharge tank, is used for ensuring the injection and discharge of liquid. The device can solve the problem of hollow cylinder sample preparation, however, the following problems also exist when in use:
1. the filling hole on the water injection cap is arranged on the side wall of the water injection cap, so that the liquid supply pipe cannot be vertically arranged when liquid is filled, and in order to prevent the liquid from flowing out of the filling hole when the liquid is filled, the liquid supply pipe and the hole wall of the filling hole need to be sealed through a joint, a sealing ring or other structures, so that more liquid injection operations are inconvenient, and particularly the butt joint with the liquid supply pipe is inconvenient;
2. because the hollow cylindrical sample has a certain thickness, the injection holes are only uniformly distributed in the circumferential direction and cannot cover the whole thickness, so that the injected liquid cannot be uniformly distributed on the whole sample, the situation that partial solidification is not achieved or the solidification degree of each part is different can be caused, and the normal use of the sample is influenced;
3. the groove for liquid flowing comprises an infusion channel, a semicircular annular channel, an annular channel and the like, and not only is complex in structure and inconvenient to process, but also causes a liquid flowing path to be too long, and a part of liquid can be remained, so that the quantity of the liquid flowing to the sample is unstable, and the solidification quality of the sample is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can carry out even solidification, system appearance device and feed pipe butt joint convenient and fast, annotate the higher hollow cylinder sample system appearance device based on soybean urease solidification silt of liquid precision to the hollow cylinder sample.
The technical scheme of the utility model as follows: the utility model provides a hollow cylinder sample preparation device based on soybean urease solidification silt, includes the bottom, annotates the liquid top cap and installs at bottom and annotate inner tube and urceolus that the concentric cover was established between the liquid top cap, encloses into the annular space that is used for preparing the hollow cylinder sample between inner tube and the urceolus, annotates the liquid chamber of liquid top cap including the notes liquid chamber that is located the top, and the upper portion central authorities department of annotating the liquid chamber is equipped with the inlet, and inlet department is equipped with the notes liquid pipe that upwards extends, and the bottom of annotating the liquid chamber is equipped with from center department along the grout groove of radial distribution, every grout groove with annotate length direction interval along the grout groove on one section that the liquid chamber overlaps and set up a plurality of grout holes, and the grout hole runs through downwards to annotating the lower surface of liquid top cap in order to be used for annotating the liquid intracavity and fill liquid.
The beneficial effect of this scheme: the utility model discloses a hollow cylinder sample preparation device based on soybean urease solidification silt is when using, because the upper portion center of notes liquid top cap sets up the inlet and has the notes liquid pipe that extends upwards, can very convenient insert the feed pipe, and because insert from the top down, liquid flows downwards, so need not to set up seal structure between the two and also can satisfy normal use demand, save cost and convenient operation, moreover, because the grout groove is from the center along radial distribution, the liquid that gets into from the inlet can be simultaneously even flows to each grout groove, ensure that each grout hole can go out simultaneously, guaranteed that each partial solidification of sample is synchronous going on, do not successively solidify the error and influence the sample attribute; moreover, the grouting groove flows from the middle to the periphery simultaneously, the flowing path is shortest, and the amount of the liquid remaining in the grouting groove is also minimum, so that the amount of the injected liquid can be basically increased, the amount of the liquid of the sample can be controlled more accurately, and the accuracy of the sample property is further improved; furthermore, because each grout groove is gone up to be corresponding to annotate one section of liquid chamber and is gone up along length direction interval and set up a plurality of grout holes for the liquid that fills can be more even in the thickness direction (radial) distribution of hollow cylinder sample, and the homogeneity when guaranteeing that the sample is solidified is higher.
Furthermore, the lower part of the liquid injection top cover is provided with an upper annular clamping groove for inserting the outer cylinder and a protruding circular truncated cone for inserting into the upper end of the inner cylinder, and the outer diameter of the protruding circular truncated cone is consistent with the inner diameter of the inner cylinder.
The beneficial effect of this scheme: the inner cylinder is positioned in a mode of protruding the circular truncated cone, the circular groove is more convenient to process and more cost-saving, and the height of the protruding circular truncated cone can be larger than the depth of the circular groove limited to a certain extent, so that the radial limiting of the inner cylinder is more stable and reliable.
Furthermore, the grout groove has four and is the cross distribution, is provided with three grout hole on every grout groove.
Further, the upper portion of bottom cover is provided with interior annular clamping groove and outer annular clamping groove respectively with one heart, and in the annular clamping groove including the lower extreme cartridge of inner tube, the lower extreme cartridge of urceolus sets up a plurality of outage that run through from top to bottom in the annular region between interior, outer annular clamping groove in, and the lower part of bottom cover still is equipped with collection liquid funnel to be arranged in collecting the liquid that flows out in each outage, collection liquid funnel's lower extreme has the fluid-discharge tube, is provided with the flowing back valve on the fluid-discharge tube.
The beneficial effect of this scheme: the structural design of bottom has not only made things convenient for the location of interior, urceolus, makes the flowing back more smooth and easy moreover, and more crucial is through setting up album liquid funnel and valve, can collect and control the discharge opportunity of liquid, ensures that discharged liquid can not pollute reaction unit and laboratory.
Furthermore, the inner cylinder is made of stainless steel, the outer cylinder is made of toughened glass, and scale marks are arranged on the periphery of the outer cylinder along the axis direction of the outer cylinder.
The beneficial effect of this scheme: the material of urceolus and the setting of scale mark, the preparation height of looking over the sample that can be convenient at any time to the preparation height of more accurate control sample.
Furthermore, the inner cylinder is formed by splicing two arc-shaped plates with the same shape and size through a V-shaped bayonet.
The beneficial effect of this scheme: the inner cylinders are spliced by the arc-shaped plates with the same shape and size, so that the standardization of products is favorably realized, the die sinking cost is reduced, and the product universality is improved.
Furthermore, the outer cylinder is formed by splicing three arc-shaped plates with the same shape and size through V-shaped bayonets.
The beneficial effect of this scheme: the outer barrel is spliced by the arc-shaped plates with the same shape and size, so that the standardization of products is favorably realized, the die sinking cost is reduced, and the product universality is improved.
Furthermore, bottom lower part releasable connection has the tripod, and the tripod is including being located the steel ring on upper portion and the landing leg of axial uniform connection in the steel ring lower part.
The beneficial effect of this scheme: because the lower part of the bottom cover is provided with the liquid collecting funnel, the valve and the like, the tripod with the structure is convenient for fixing the bottom cover, and is also convenient for operating the valve and discharging and collecting liquid.
Drawings
Fig. 1 is a schematic diagram of a system principle of a hollow cylindrical sample preparation device for solidifying silt based on soybean urease in use;
FIG. 2 is a longitudinal cross-sectional view of a hollow cylindrical sample preparation device based on soy urease-cured silt;
FIG. 3 is a perspective view of the inner barrel;
FIG. 4 is a top view of the inner barrel;
FIG. 5 is a perspective view of the outer tub;
FIG. 6 is a top view of the outer barrel;
FIG. 7 is a longitudinal sectional view of the bottom cap;
FIG. 8 is a bottom cover top view;
FIG. 9 is a longitudinal sectional view of the liquid injection cap;
FIG. 10 is a top view of the injection header;
FIG. 11 is an overall view of the soil compactor;
FIG. 12 is a top view of a tripod;
FIG. 13 is a top view of another embodiment of a liquid injection header;
in the figure: the device comprises a water bath tank 01, a control device 02, a peristaltic pump 03, a sample preparation device 04, a waste liquid collecting beaker 05, reaction liquid 06, an inner cylinder 1, an inner cylinder component 1-2, an outer cylinder component 2-1, an outer cylinder component 2-2, an outer cylinder component 2-3, a vacuum air suction hole 2-4, a scale mark 2-5, a bottom cover 3, an outer annular clamping groove 3-1, an inner annular clamping groove 3-2, a liquid discharge hole 3-3-1, a liquid discharge hole 3-3-2, a liquid discharge hole 3-3, a liquid collection funnel 3-4, a valve 3-5, a liquid injection top cover 4, a raised circular truncated cone 4-1, an upper annular clamping groove 4-2, a grouting groove 4-3, a grouting hole 4-4, a grouting hole 4-1, a grouting hole 4-4-2, a grouting hole 4-4-3, a liquid injection pipe 4-5, a hoop ring 5, a soil compactor 6-1, a round rod 6-2, a flat plate 6-2, a rubber ring 7, a water permeable tripod 9.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present 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 invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
The utility model discloses an embodiment of hollow cylinder sample preparation device based on soybean urease solidification silt: hollow cylinder sample preparation device based on soybean urease solidification silt includes the bottom, annotates the liquid top cap and installs inner tube and urceolus of establishing with one heart the cover between bottom and notes liquid top cap, encloses into the annular space that is used for preparing the hollow cylinder sample between inner tube and the urceolus, annotates the liquid top cap including the notes liquid chamber that is located the top, and the upper portion central authorities department of annotating the liquid chamber is equipped with the inlet, and inlet department is equipped with the notes liquid pipe that upwards extends, and the bottom of annotating the liquid chamber is equipped with from center department along the grout groove of radial distribution, every grout groove with annotate the length direction interval of going up along the grout groove in one section that the liquid chamber overlaps and set up a plurality of grout holes, and the grout hole runs through downwards to annotating the lower surface of liquid top cap in order to be used for annotating liquid intracavity and filling liquid. When the hollow cylindrical sample preparation device based on the soybean urease solidified sediment is used, the liquid inlet is arranged in the center of the upper part of the liquid injection top cover and the liquid injection pipe extending upwards is arranged, so that the liquid supply pipe can be very conveniently inserted, and the liquid flows downwards due to the insertion from top to bottom, so that the normal use requirement can be met without arranging a sealing structure between the liquid injection top cover and the liquid supply pipe, the cost is saved, the operation is convenient, in addition, the grouting grooves are radially distributed from the center, the liquid entering from the liquid inlet can uniformly flow to each grouting groove at the same time, the liquid can be discharged from each grouting hole at the same time, the synchronous solidification of all parts of the sample is ensured, and the sample property is not influenced by the successive solidification errors; moreover, the grouting groove flows from the middle to the periphery simultaneously, the flowing path is shortest, and the amount of the liquid remaining in the grouting groove is also minimum, so that the amount of the injected liquid can be basically increased, the amount of the liquid of the sample can be controlled more accurately, and the accuracy of the sample property is further improved; furthermore, because each grout groove is gone up to be corresponding to annotate one section of liquid chamber and is gone up along length direction interval and set up a plurality of grout holes for the liquid that fills can be more even in the thickness direction (radial) distribution of hollow cylinder sample, and the homogeneity when guaranteeing that the sample is solidified is higher.
The lower part of the liquid injection top cover is provided with an upper annular clamping groove for inserting the outer cylinder and a protruding circular truncated cone for inserting into the upper end of the inner cylinder, and the outer diameter of the protruding circular truncated cone is consistent with the inner diameter of the inner cylinder. The inner cylinder is positioned in a mode of protruding the circular truncated cone, the circular groove is more convenient to process and more cost-saving, and the height of the protruding circular truncated cone can be larger than the depth of the circular groove limited to a certain extent, so that the radial limiting of the inner cylinder is more stable and reliable.
The grout grooves are four and distributed in a cross shape, and each grout groove is provided with three grout holes. The upper portion of bottom is provided with interior annular draw-in groove and outer annular draw-in groove respectively with one heart, in the annular draw-in groove including the lower extreme cartridge of inner tube, the lower extreme cartridge of urceolus is in outer annular draw-in groove, set up the outage that runs through from top to bottom in the annular region between interior, outer annular draw-in groove, the lower part of bottom still is equipped with collection liquid funnel to be arranged in collecting the liquid that flows out in each outage, collection liquid funnel's lower extreme has the fluid-discharge tube, is provided with the flowing back valve on the fluid-discharge tube. The structural design of bottom has not only made things convenient for the location of interior, urceolus, makes the flowing back more smooth and easy moreover, and more crucial is through setting up album liquid funnel and valve, can collect and control the discharge opportunity of liquid, ensures that discharged liquid can not pollute reaction unit and laboratory.
The material of inner tube is stainless steel, and the material of urceolus is toughened glass, is provided with the scale mark along the urceolus axis direction on the periphery of urceolus. The material of urceolus and the setting of scale mark, the preparation height of looking over the sample that can be convenient at any time to the preparation height of more accurate control sample. The inner cylinder is formed by splicing two arc-shaped plates with the same shape and size through a V-shaped bayonet. The outer cylinder is formed by splicing three arc-shaped plates with the same shape and size through V-shaped bayonets. The inner barrel and the outer barrel are spliced by adopting the arc plates with the same shape and size, so that the standardization of products is favorably realized, the die sinking cost is reduced, and the product universality is improved.
Bottom lower part releasable connection has the tripod, and the tripod is including being located the steel ring on upper portion and the landing leg of axial uniform connection in the steel ring lower part. Because the lower part of the bottom cover is provided with the liquid collecting funnel, the valve and the like, the tripod with the structure is convenient for fixing the bottom cover, and is also convenient for operating the valve and discharging and collecting liquid.
More specifically, as shown in fig. 1 to 12, in this embodiment, the inner cylinder 1 includes two semicircular inner cylinder components 1-1 and 1-2, the inner cylinder components 1-1 and 1-2 are spliced end to end into an inner cylinder through two V-shaped slots disposed at an end of the inner cylinder, the material of the inner cylinder is stainless steel, and the size of the inner cylinder is as follows: the inner diameter of the inner cylinder is 90mm, the outer diameter of the inner cylinder is 120mm, the wall thickness is 15mm, and the height of the inner cylinder is 380mm; the bottom end of the inner cylinder 1 is fixed on the bottom cover 3 through an inner annular clamping groove 3-2, the depth of the inner annular clamping groove is 10mm, and the width of the inner annular clamping groove is 15mm.
In the embodiment, the outer cylinder 2 comprises three outer cylinder components 2-1,2-2 and 2-3 which are in a 120-degree circular arc, a vacuum pumping hole 2-4 and a scale mark 2-5, the outer cylinder components 2-1,2-2 and 2-3 are spliced end to end through a V-shaped clamping groove and a V-shaped bulge which are arranged at the port of the outer cylinder component to form the outer cylinder, the material is toughened glass, and the size of the outer cylinder is as follows: the inner diameter of the outer cylinder is 200mm, the outer diameter of the outer cylinder is 220mm, the wall thickness is 10mm, and the height of the outer cylinder is 405mm; the vacuum pumping hole is formed in the middle of the outer cylinder assembly 2-1, and the inner diameter of the vacuum pumping hole is 10mm; the outer barrel component is characterized in that the joints are provided with scale marks which are perpendicular to the joints, the minimum value is 1mm, the measuring range is 0-300mm, the bottom end of the outer barrel 2 and the inner barrel 1 are fixed on the bottom cover 3 through the outer annular clamping groove 3-1, the depth of the outer annular clamping groove is 10mm, and the width of the outer annular clamping groove is 12mm; the rubber ring 7 is sleeved in a gap between the outer cylinder and the outer annular clamping groove to play a role in sealing and facilitating mold removal; an annular permeable stone 9 is arranged between the outer cylinder 2 and the inner cylinder 1, the height of the permeable stone is 30mm, and the width of the permeable stone is 40mm; a layer of filter paper is placed on the permeable stone, so that the yellow river sediment sample can be conveniently filled; the hoop 5 is made of stainless steel and is fixed on the outer wall of the outer cylinder 2.
The whole bottom cover 3 is conical, the upper half part of the bottom cover 3 comprises an outer annular clamping groove 3-1, an inner annular clamping groove 3-2 and annularly arranged liquid discharge holes 3-3-1, 3-3-2 and 3-3-3, the radial interval between the liquid discharge hole 3-3-1 and the inner annular clamping groove is 7.5mm, the radial interval between the liquid discharge hole 3-3-3 and the outer annular clamping groove is 7.5mm, the radial interval between the liquid discharge holes is 5mm, and the depth of the liquid discharge hole is 30mm; the lower half part of the bottom cover is provided with a hollow liquid collecting funnel 3-4, the liquid collecting funnel 3-4 is welded with the bottom cover, and the lower part of the liquid collecting funnel is provided with a valve 3-5; the outer wall height of the bottom cover 3 is 50mm, the thickness is 10mm, and the inner height is 30mm.
The liquid injection top cover 4 is integrally in a circular truncated cone shape, the bottom of the liquid injection top cover 4 is a raised circular truncated cone 4-1, the top of the inner barrel 1 is fixed, and the diameter of the raised circular truncated cone 4-1 is 90mm, and the height of the raised circular truncated cone is 20mm; the liquid injection top cover 4 also comprises an upper annular clamping groove 4-2, a grouting groove 4-3, a grouting hole 4-4 (comprising 4-4-1, 4-4-2 and 4-4-3) and a liquid injection pipe 4-5, wherein the upper annular clamping groove is used for fixing the top end of the outer barrel 2, the groove depth is 5mm, and the width is 10mm; the grouting groove 4-3 is arranged at the top of the liquid injection top cover and is in a cross shape, and in other embodiments, as shown in fig. 13, the grouting groove is in a meter shape, the length is 185mm, and the groove depth is 10mm; grouting holes 4-4 are formed in the grouting grooves 4-3, three groups of holes are concentrically arranged, the grouting holes 4-4-1 are tightly attached to the inner walls of the grouting grooves, the radial interval of each grouting hole is 5mm, the diameter is 5mm, and the hole depth is 45mm; the liquid injection pipe 4-5 is welded at the intersection of the grouting grooves 4-3, and has the diameter of 14mm and the height of 45mm; the total length of the liquid injection top cover 4 is 244mm, and the total height is 120mm. The soil compactor 6 comprises a round rod 6-1 and a flat plate 6-2 which is 90 degrees, the bottom end of the round rod 6-1 is screwed into the flat plate 6-2, the round rod is 200mm high, the diameter is 5mm, and the width of the flat plate is 20mm; the tripod 8 fixes the sample preparation device, so that waste liquid is convenient to collect.
The sample preparation process shown in fig. 1 comprises a water bath tank 01, reaction liquid 06 (soybean urease and cementing liquid), a peristaltic pump 03, a hollow cylinder sample preparation device 04, a tripod and a waste liquid collection beaker 05. As 2 shows, hollow cylinder sample preparation appearance device includes inner tube 1, urceolus 2, bottom 3, annotate liquid top cap 4, hoop 5, soil compactor 6, rubber circle 7, tripod 8 and permeable stone 9, inner tube 1 is in urceolus 2, the bottom of inner tube 1 and urceolus 2 is the joint respectively in the interior annular draw-in groove 3-2 and the outer annular draw-in groove 3-1 of bottom, the top of inner tube 1 is fixed by the protruding round platform 4-1 of annotating the liquid top cap, the top joint of urceolus 2 is annotating annular draw-in groove 4-2 on the liquid top cap, put into permeable stone 9 between inner tube 1 and the urceolus 2, the permeable stone upper padding one deck paper that permeates water.
The integral structure of the inner cylinder 1 is shown in fig. 3, the inner cylinder components 1-1 and 1-2 are connected end to end into the inner cylinder 1 through V-shaped grooves and V-shaped protrusions at the port parts, and the top view of the inner cylinder 1 is shown in fig. 4; the overall structure of the outer cylinder 2 is shown in fig. 5, 120-degree three-petal outer cylinder assemblies 2-1,2-2 and 2-3 are connected into the outer cylinder 2 end to end through V-shaped grooves and V-shaped protrusions at ports, and the top view of the outer cylinder 2 is shown in fig. 6; the whole structure of the bottom cover 3 is shown in figure 7, the bottom cover 3 is provided with an outer annular clamping groove 3-1, an inner annular clamping groove 3-2 and liquid discharge holes 3-3-1, 3-3-2 and 3-3-3, the arrangement mode is shown in figure 8, the bottom of the bottom cover is welded with a liquid collecting funnel 3-4, the liquid collecting funnel is controlled by a valve 3-5, a rubber ring 7 is sealed in a gap between the outer cylinder 2 and the outer annular clamping groove 3-1, and the top view of the bottom cover 3 is shown in figure 8; the integral structure of the liquid injection top cover is shown in fig. 9, the bottom of the liquid injection top cover 4 is provided with a convex circular truncated cone 4-1, an upper annular clamping groove 4-2, a cross-shaped grouting groove 4-3 and three groups of grouting holes 4-4 which are concentrically arranged, the top of the liquid injection top cover is provided with a liquid injection pipe 4-5, and the top view of the liquid injection top cover 4 is shown in fig. 10; the whole structure of the soil compactor 6 is shown in fig. 11, and the whole structure of the tripod is shown in fig. 12.
The use method of the hollow cylinder sample preparation device for highly visualizing the soybean urease-cured yellow river sediment comprises the following steps:
(1) assembling an inner barrel: connecting two semicircular petals end to end through a V-shaped bulge and a V-shaped clamping groove at a port to assemble an inner cylinder, brushing a layer of vaseline on the outer wall of the inner cylinder, clamping the bottom end of an inner rubber film at the bottom end of the inner cylinder, extending the inner rubber film upwards along the outer wall of the inner cylinder, inwards turning the inner rubber film higher than the inner cylinder to the inner wall of the inner cylinder, and clamping the bottom end of the inner cylinder on a bottom cover through an inner annular clamping groove;
(2) assembling an outer cylinder: the three arc petals of 120 degrees are connected end to end through the V-shaped protrusions and the V-shaped clamping grooves at the port to form an outer cylinder, the bottom end of the outer cylinder is fixed on the bottom cover through the outer annular clamping groove, the rubber ring is sleeved on the bottom of the outer cylinder to seal the gap, and the outer rubber film extends upwards along the inner wall of the outer cylinder; reversely sleeving an outer rubber film higher than the outer cylinder on the outer wall of the outer cylinder, and simultaneously clamping the bottom of the outer cylinder and the outer rubber film in the inner annular clamping groove;
(3) putting permeable stones on the bottom cover by clinging to the outer wall of the inner cylinder and the inner wall of the outer cylinder, wherein the permeable stones and the inner cylinder are concentrically distributed, and a layer of permeable paper is put on the permeable stones;
(4) filling yellow river sediment in layers by adopting a sand-rain method, leveling the surface of the sample by using a soil compactor, controlling the height of the sample by using a scale mark at the seam of the outer cylinder so as to ensure the relative compactness of the yellow river sediment sample, and paving a layer of filter cotton on the top of the sample;
(5) covering the liquid injection top cover, clamping the top of the outer barrel in the upper annular clamping groove, and clamping the circular truncated cone at the bottom end of the liquid injection top cover in the inner barrel;
(6) fixing the hoop on the outer wall of the outer barrel;
(7) closing a valve of the bottom cover, injecting the soybean urease from the liquid injection pipe by using a peristaltic pump, allowing the soybean urease to flow into the cross-shaped grouting groove, allowing the soybean urease to flow into the sample bin from a grouting hole in the grouting groove, standing for three hours, and opening the valve to discharge soybean urease waste liquid;
(8) closing the valve at the lower part of the bottom cover again, injecting the cementing liquid from the liquid injection pipe by using a peristaltic pump, allowing the cementing liquid to flow into the cross-shaped grouting groove, allowing the cementing liquid to flow into the sample bin from a grouting hole in the grouting groove, standing for 12 hours, and opening the valve to discharge the cementing liquid;
(9) repeating the grouting operations of (7) and (8) repeatedly until the preset grouting times are reached;
injecting deionized water into the red (R) cavity from the liquid injection pipe by using a peristaltic pump, discharging the deionized water through a liquid discharge hole in the bottom cover, and washing unreacted soybean urease and inorganic salt ions in the yellow river sediment sample:
⑪ drying the washed yellow river sediment hollow cylindrical sample in an oven;
5363 and removing the sample preparation device from the yellow river sediment sample which is dried by ⑫, placing the solidified yellow river sediment hollow cylinder sample on a hollow cylinder torsional shear instrument, and carrying out a subsequent hollow cylinder torsional shear test.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, the scope of the present invention is defined by the appended claims, and all the structural changes equivalent to the content of the description and the attached drawings should be included in the same way.
Claims (8)
1. The utility model provides a hollow cylinder sample preparation device based on soybean urease solidification silt, including the bottom, annotate the liquid top cap and install inner tube and urceolus of establishing with one heart the cover between bottom and notes liquid top cap, enclose into the annular space that is used for preparing the hollow cylinder sample between inner tube and the urceolus, a serial communication port, annotate the liquid top cap including the notes liquid chamber that is located the top, the upper portion central authorities department of annotating the liquid chamber is equipped with the inlet, inlet department is equipped with the notes liquid pipe that upwards extends, the bottom of annotating the liquid chamber is equipped with from the center department along the grout groove of radial distribution, every grout groove with annotate the length direction interval of going up along the grout groove of liquid chamber overlapping and set up a plurality of grout holes, the grout hole runs through downwards to the lower surface of annotating the liquid top cap in order to be used for annotating liquid intracavity perfusion liquid.
2. The soybean urease-cured sediment-based hollow cylinder sample preparation device as claimed in claim 1, wherein the lower part of the injection top cover is provided with an upper annular clamping groove for inserting the outer cylinder and a raised circular truncated cone for inserting into the upper end of the inner cylinder, and the outer diameter of the raised circular truncated cone is consistent with the inner diameter of the inner cylinder.
3. The soybean urease-based solidified sediment hollow cylinder sample preparation device as claimed in claim 1 or 2, wherein four grouting grooves are distributed in a cross shape, and each grouting groove is provided with three grouting holes.
4. The device for preparing the hollow cylindrical sample based on the soybean urease solidified sediment as claimed in claim 1, wherein an inner annular clamping groove and an outer annular clamping groove are concentrically arranged at the upper part of the bottom cover respectively, the lower end of the inner cylinder is inserted into the inner annular clamping groove, the lower end of the outer cylinder is inserted into the outer annular clamping groove, a plurality of vertically penetrating liquid drainage holes are arranged in an annular region between the inner annular clamping groove and the outer annular clamping groove, a liquid collection funnel is further arranged at the lower part of the bottom cover and used for collecting liquid flowing out of each liquid drainage hole, a liquid drainage pipe is arranged at the lower end of the liquid collection funnel, and a liquid drainage valve is arranged on the liquid drainage pipe.
5. The soybean urease-based mud and sand solidifying hollow cylinder sample preparation device as claimed in claim 1, wherein the inner cylinder is made of stainless steel, the outer cylinder is made of toughened glass, and the outer circumference of the outer cylinder is provided with scale marks along the axial direction of the outer cylinder.
6. The soybean urease-based solidified sediment hollow cylinder sample preparation device as claimed in claim 5, wherein the inner cylinder is formed by splicing two arc-shaped plates with the same shape and size through a V-shaped bayonet.
7. The hollow cylindrical sample preparation device based on soybean urease cured sediment according to claim 5, characterized in that the outer cylinder is formed by splicing three arc-shaped plates with the same shape and size through a V-shaped bayonet.
8. The apparatus of claim 4, wherein the bottom cover is detachably connected to a tripod comprising a steel ring at an upper portion and legs axially and uniformly connected to a lower portion of the steel ring.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117554149A (en) * | 2023-11-16 | 2024-02-13 | 北京建筑大学 | Glutinous rice slurry and urease combined calcium carbonate reinforced soil sample preparation system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117554149A (en) * | 2023-11-16 | 2024-02-13 | 北京建筑大学 | Glutinous rice slurry and urease combined calcium carbonate reinforced soil sample preparation system and method |
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