CN113917112A - Movable filling mechanism based on similar simulation test platform and use method - Google Patents
Movable filling mechanism based on similar simulation test platform and use method Download PDFInfo
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- CN113917112A CN113917112A CN202111194270.7A CN202111194270A CN113917112A CN 113917112 A CN113917112 A CN 113917112A CN 202111194270 A CN202111194270 A CN 202111194270A CN 113917112 A CN113917112 A CN 113917112A
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Abstract
The invention discloses a movable filling mechanism based on a similar simulation test platform, which comprises the similar simulation test platform consisting of a main frame and a similar simulation rock-soil layer, wherein the similar simulation test platform is provided with the movable filling mechanism consisting of a movable frame and a filler, the filler comprises a riding card, a front compression bolt and a front grout stop plate provided with a filling hole, the filling hole is connected with a filling pipe and a storage bottle, and the riding card, a rear compression bolt and a rear grout stop plate. According to the invention, through arranging the movable frame and the filling device, filling of each goaf along the coal seam is realized, filling of strip goafs and/or long-wall working surface circulation operation goafs of different coal seams is also realized, the operation is convenient, a plurality of filling mechanisms are simultaneously used, and the requirement of simultaneously filling a plurality of goafs is met.
Description
Technical Field
The invention belongs to the technical field of mining engineering similarity simulation, and particularly relates to a movable filling mechanism and a movable filling method based on a similarity simulation test platform.
Background
Because the goaf remaining coal pillars are influenced by mine pressure and weathering, the goaf remaining coal pillars have irregularity and instability, and the stability of the goaf remaining coal pillar group, the stability of the 'filling body-coal pillar' under filling mining conditions and the stability of the 'filling body-coal pillar-immediate roof' bearing structure in the process of stoping the remaining coal pillars cannot be accurately researched.
The 'three-down' coal pressing is widely distributed in areas with large industrial coal quantity and coal resources shortage, how to reasonably exploit the 'three-down' coal pressing resources into the key of sustainable development of coal enterprises, and at present, the subsequent filling of a short wall caving area and the subsequent filling of a long wall working face frame become the most effective technical means for solving the 'three-down' coal pressing; the similarity simulation is a model test technology based on a similarity theory, is widely applied to the field of underground engineering and geotechnical engineering research at present, and is characterized in that a coal bed and stratum similarity model is built by adopting artificial materials in a proper proportion according to actual engineering problems, a filling process and a residual coal mining process are converted into visual model test research, the research process is facilitated to be simplified, the research difficulty is reduced, the research precision is improved, and the similarity simulation becomes one of important scientific research approaches for solving the problem of mining engineering.
In the simulation test of the physical similar material, the requirements of the filler similar material are as follows: the filling material has certain fluidity, can meet the requirement that similar filling materials can flow in a filling mechanism and a goaf, has the water content as small as possible, prevents water in the similar filling materials from wetting rock and soil layers around a goaf filling area so as to avoid influencing the strength of a filling body and surrounding rocks thereof, and meets the requirement on mechanical properties under the condition of similar strength ratio; however, in the conventional similar simulation filling test, after the coal seam is mined, wood blocks, plastic foam, prefabricated filling test blocks, pressure sensors and the like are usually placed in a goaf to simulate the supporting effect of a filling body on overlying rocks, and the conventional similar simulation filling mining test has the following problems and disadvantages: 1. from the viewpoint of mechanical properties of filling materials: the strength similarity of the material and similar materials of the filling body is greatly different, the mechanical property and deformation characteristics of the material are also obviously different from those of similar filling materials, and the deformation and damage of the filling body under the action of overburden pressure cannot be simulated, so that the accuracy of the overburden migration rule is influenced; 2. from the filling time and goaf space perspective: in the actual engineering, certain construction intermission time exists between coal seam mining and goaf filling work, the goaf space volume is reduced after the coal pillars and the top plate in the intermission time deform, and the early strength of a filling body cannot achieve the effects of restraining the coal pillars and controlling the goaf top plate; in the filling process in the existing similar material simulation test, materials such as wood blocks and the like are placed into the goaf after coal seam mining, and the initial deformation and damage of the goaf are limited by the materials with higher strength such as the wood blocks and the like, so that the time similarity of the similar material simulation filling test is greatly different from that of the actual engineering, the accuracy of the similar material simulation filling test is further influenced, and the coupling action mechanism of a filling body and overlying strata cannot be truly and accurately simulated.
Therefore, in the process of a similar material simulation test, a method for directly putting materials such as wood blocks into a goaf simulation filling body is not good enough, and in view of the above problems, a movable filling mechanism based on a similar simulation test platform and a filling method are needed to be provided.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a movable filling mechanism based on a similar simulation test platform, aiming at the defects of the prior art. The mechanism realizes filling of all goafs along the coal seam trend by arranging the movable frame and the filling device, also realizes filling of strip goafs and/or longwall working surface circulation operation goafs of different coal seams, covers similar simulation rock-soil layers at all positions on a similar simulation test platform, satisfies filling of goafs at any positions, is convenient and small to operate, can realize simultaneous use of a plurality of filling mechanisms, and satisfies the requirement of simultaneous filling of a plurality of goafs.
In order to solve the technical problems, the invention adopts the technical scheme that: the movable filling mechanism based on the simulation modeling test platform is characterized in that the simulation modeling test platform comprises a main frame, the main frame comprises two vertical rods, an upper cross beam and a lower cross beam, the upper cross beam and the lower cross beam are erected on the two vertical rods, a simulation modeling rock stratum are filled in the main frame, the movable filling mechanism is installed on the simulation modeling test platform and comprises a movable frame and a filling device installed on the movable frame, the movable frame comprises two front side vertical pipes located on the front side of the main frame and two rear side vertical pipes located on the rear side of the main frame, the end parts of the two front side vertical pipes and the end parts of the two rear side vertical pipes are connected with each other through a locking device, the filling device comprises two horse riding cards installed on the front side vertical pipes and two horse riding cards installed on the rear side vertical pipes, and a front compression bolt penetrating through the horse riding cards is installed in the middle of the horse riding cards on the front side vertical pipes, the utility model discloses a grout spraying machine, including preceding housing pin, preceding housing pin is installed towards main frame one end, seted up towards the hole of filling on the preceding housing pin, towards the hole of filling and having connected gradually filling pipe and storage bottle, be provided with the ball valve on the filling pipe, the mid-mounting of riding on the standpipe of rear side has the back housing pin who runs through riding on the horse card, back housing pin installs back towards main frame one end and ends the grout plate.
The movable filling mechanism and the movable filling method based on the simulation test platform are characterized in that the bottoms of the two vertical rods are respectively provided with a support for supporting the main frame.
The movable filling mechanism and the movable filling method based on the analog simulation test platform are characterized in that the locking device comprises two threaded rods which are respectively connected with two groups of front side vertical pipes and rear side vertical pipes, two ends of each threaded rod are respectively and vertically connected with a steel plate, and locking nuts are further mounted at two ends of each threaded rod.
The movable filling mechanism and the movable filling method based on the simulation test platform are characterized in that the number of the locking devices is two, one of the two locking devices is located on the upper surface of the upper cross beam, and the other locking device is located on the lower portion of the upper cross beam.
The movable filling mechanism and the method based on the similar simulation test platform are characterized in that the horsecard is fixed with the front side vertical pipe or the rear side vertical pipe through fastening bolts and fastening nuts at two ends.
The movable filling mechanism and the movable filling method based on the similar simulation test platform are characterized in that EVA sponges are attached to one sides, close to the main frame, of the front grout stopping plate and one side, close to the main frame, of the rear grout stopping plate.
The movable filling mechanism and the movable filling method based on the similar simulation test platform are characterized in that the storage bottle is provided with capacity scales.
In addition, the invention also provides a use method of the movable filling mechanism based on the similar simulation test platform, which is characterized by comprising the following steps:
step one, paving a similar simulation rock-soil layer: determining materials required by a similar simulation rock-soil layer according to the attributes of the rock-soil layer to be simulated, paving corresponding materials of the similar simulation rock-soil layer on a similar simulation test platform from bottom to top in a layered paving and compacting mode, and after the similar simulation rock-soil layer is naturally dried in the air, simulating strip mining to extract a coal bed to obtain the similar simulation test platform with a goaf;
step two, installing a movable filling mechanism:
mounting a movable filling mechanism on the similar simulation test platform with the goaf obtained in the step one to obtain a similar simulation test platform with the movable filling mechanism;
step three, goaf filling:
filling the goaf in the similar simulation test platform provided with the movable filling mechanism obtained in the step two by using a filling mechanism to obtain a filled similar simulation test platform; the filling process comprises the following steps: and moving the filling mechanism to the goaf, enabling the front grout stopping plate and the rear grout stopping plate to be respectively positioned at two sides of the goaf, enabling the front grout stopping plate and the rear grout stopping plate to be tightly attached to the similar simulation rock-soil layer, then filling the filling material slurry in the storage bottle into the goaf, closing the ball valve after the filling material slurry is filled, moving the movable filling mechanism to the next goaf after the filling material slurry is solidified, continuously filling, and repeating the filling process to obtain the filled similar simulation test platform.
The method is characterized in that the number of the movable filling mechanisms arranged on the similar simulation test platform in the step two is 1 or more; and in the second step, the goaf is a strip goaf or a long-wall working surface circulation operation goaf. The invention is not only suitable for strip goafs, but also suitable for long-wall working face circulation operation goafs with longer length.
The method is characterized in that the filling material slurry is prepared from soil, gypsum powder and cellulose in the third step, wherein the mass ratio of the soil to the gypsum powder to the cellulose is as follows: 260: 60-100: 1.0-1.4, wherein the cellulose is hydroxypropyl methyl cellulose.
Compared with the prior art, the invention has the following advantages:
1. according to the invention, the filling of each goaf along the coal seam direction is realized by arranging the movable frame and the filling device, the filling of strip goafs and/or goafs in circulating operation of a longwall working surface of different coal seams is realized by adjusting the sizes of the front and rear grout stopping plates and the EVA sponge rubber, similar simulation rock-soil layers at all positions on a similar simulation test platform are covered, the goafs at any positions are filled, the filling effect of filling materials such as wood blocks and plastic foam is replaced by filling body similar materials, the test error caused by the mechanical property and shape and size difference of the filling materials is effectively solved, and the moving deformation rule of overlying strata in the goaf mining process of the left-over coal pillar can be better simulated and predicted.
2. According to the invention, the front grout stop plate is provided with the filling hole, the filling hole is sequentially connected with the filling pipe and the storage bottle, filling material slurry stored in the storage bottle is filled into the goaf through the filling pipe and the filling hole, the goaf is reinforced, the flow rate of the filling material slurry is controlled by arranging the ball valve on the filling pipe, the volume of the filling material slurry in the goaf is ensured, the rear grout stop plate is tightly contacted with the rear side of the goaf in the similar simulated rock-soil layer and completely covers the goaf by installing the rear grout stop plate, when the goaf is filled with the filling material slurry, the rear side is blocked, the filling material slurry is prevented from flowing out, and the goaf can be filled with the filling material slurry.
3. According to the invention, EVA sponges with certain elasticity and sealing property are adhered to the inner sides of the front grout stopping plate and the rear grout stopping plate, so that the front grout stopping plate and the rear grout stopping plate are prevented from damaging the surface of a rock-soil layer, grout leakage and leakage at the edge of a goaf in the filling process are prevented, the front grout stopping plate and the rear grout stopping plate are compressed by the front compression bolt and the rear compression bolt which penetrate through the buckle, the forces of the front grout stopping plate and the rear grout stopping plate on the surface of the rock-soil layer are a pair of mutual acting forces, and the stability of the rock-soil layer on a similar material simulation test platform is ensured.
4. According to the invention, the volume scales are arranged on the body of the filling material slurry storage bottle, so that filling material slurry with a corresponding volume can be prepared according to the volume of the goaf, and the waste of filling materials is avoided.
5. The strength requirement of the similar filling body is met by adjusting the dosage of the gypsum powder in the similar filling material; the cellulose filled in the similar material has a lubricating effect, so that the slurry has good fluidity, the slurry can be filled into the goaf through the filling mechanism, and the cellulose has certain water retention property, so that the slurry can be effectively prevented from bleeding to wet the surrounding rock and soil layers.
6. The invention fills the goaf in the similar simulation rock-soil layer with the similar filling material, so that the filling body and the rock-soil layer have the same strength similarity ratio, the defect that the materials such as wood blocks, plastic foam and the like can not synchronously deform with the surrounding rock-soil layer in the test process is overcome, when the load of the overlying strata soil layer acts on the coal pillar and the filling body, the stress deformation characteristic of the bearing structure of the coal pillar, the filling body and the overlying strata can be simulated, the test error caused by the difference of the mechanical property and the shape and the size of the filling material is effectively solved, the moving deformation rule of the overlying strata in the goaf remaining coal pillar recovery process can be better simulated and predicted, the migration and crack evolution rules of the overlying strata under the conditions of different filling materials, different filling body sizes and different mining step distances of the goaf can be researched, the high coincidence of the simulation test of the similar material with the actual working condition can be realized, the operation is convenient, the test precision is high, and the operability is strong.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic view of the connection relationship between the simulation test platform and the filling mechanism.
Fig. 2 is a schematic view showing the connection relationship between the moving frame and the filler according to the present invention.
FIG. 3 is a schematic view of the structure of the filling device of the present invention
Description of reference numerals:
1, a main frame; 1-vertical bar; 1-2-upper beam;
1-3-lower beam; 1-4-support; 2, simulating a rock-soil layer similarly;
2-1-goaf; 3-moving the frame; 3-1-front side vertical tube;
3-2-rear side vertical tube; 3-locking device; 3-3-1-threaded rod;
3-3-2-steel plate; 3-3-3-locking bolt; 4-a filler;
4-1-riding card; 4-1-fastening bolts; 4-1-2-fastening nuts;
4-2-front hold-down bolt; 4-3-front grout stopping plate; 4-filling the hole;
4-5-filling tube; 4-6-material storage bottle; 4-7-ball valve;
4-8-rear hold-down bolt; 4-9-rear grout stopping plate.
Detailed Description
A movable filling mechanism based on a similar simulation test platform of the present invention is described in detail in example 1.
Example 1
As shown in fig. 1 to 3, the simulation test platform of this embodiment includes a main frame 1, where the main frame 1 includes two vertical rods 1-1, and an upper cross beam 1-2 and a lower cross beam 1-3 erected on the two vertical rods 1-1, a simulation rock-soil layer 2 is filled in the main frame 1, a movable filling mechanism is installed on the simulation test platform, the filling mechanism includes a movable frame 3 and a filling device 4 installed on the movable frame 3, the movable frame 3 includes two front side vertical tubes 3-1 located on the front side of the main frame 1 and two rear side vertical tubes 3-2 located on the rear side of the main frame 1, the ends of the two front side vertical tubes 3-1 and the ends of the two rear side vertical tubes 3-2 are connected to each other through locking devices 3-3, and the filling device 4 includes two horsecards 4-1 installed on the front side vertical tubes 3-1 and a rear side vertical tube 3-1 2, a front pressing bolt 4-2 penetrating through the riding card 4-1 is arranged in the middle of the riding card 4-1 on the front side vertical tube 3-1, a front grout stop plate 4-3 is arranged at one end of the front compression bolt 4-2 facing the main frame 1, the front grout stopping plate 4-3 is provided with a filling hole 4-4, the filling hole 4-4 is sequentially connected with a filling pipe 4-5 and a material storage bottle 4-6, the filling pipe 4-5 is provided with a ball valve 4-7, the middle part of the riding card 4-1 on the rear side vertical pipe 3-2 is provided with a rear compression bolt 4-8 penetrating through the riding card 4-1, and a rear grout stop plate 4-9 is arranged at one end of the rear compression bolt 4-8, which faces the main frame 1.
The main frame 1 is formed by splicing an upper cross beam 1-2 and a lower cross beam 1-3 which are erected on two vertical rods 1-1, a basic structure of a similar simulation test platform is formed, a similar simulation rock-soil layer 2 is filled in an area which is enclosed by the two vertical rods 1-1, the upper cross beam 1-2 and the lower cross beam 1-3, the similar simulation rock-soil layer 2 is a similar simulation rock-soil layer 2 between the ground surface and a mining layer or a similar simulation rock-soil layer 2 between the ground surface and the top of a key layer, a simulated goaf 2-1 is hollowed out of the similar simulation rock-soil layer 2, and influence of mine pressure and weathering on a coal pillar left in the goaf 2-1 is simulated.
It should be noted that the moving frame 3 is composed of two front side vertical pipes 3-1, two rear side vertical pipes 3-2 and a locking device 3-3 at the end part, when the moving frame 3 needs to move, the locking device 3-3 is opened, the moving frame 3 is moved to a specified position, after the moving frame 3 is moved to the specified position, the locking device 3-3 is closed to lock the moving frame 3 with the analog simulation test platform, the moving frame 3 is fixed, and the moving frame 3 moves left and right on the analog simulation test platform.
It should be noted that the horsecard 4-1 is respectively arranged on the two front side vertical pipes 3-1 and the two rear side vertical pipes 3-2, so that the horsecard 4-1 can move up and down, the front grout stopping plate 4-3 and the rear grout stopping plate 4-9 are fixed by arranging the front compression bolt 4-2 and the rear compression bolt 4-8 on the horsecard 4-1, and the similar simulated rock-soil layer 2 is compressed by the front grout stopping plate 4-3 and the rear grout stopping plate 4-9, so that leakage of filling material slurry during filling is prevented.
It should be noted that the movable filling mechanism is composed of the movable frame 3 and the filling device 4 installed on the movable frame 3, the movable frame 3 is adjusted when the movable filling mechanism is required to move left and right, the filling device 4 is adjusted when the movable filling mechanism is required to fill the goaf 2-1 with different heights, the similar simulation rock-soil layers 2 at all positions on the similar simulation test platform are completely covered, and the goaf 2-1 at any position is filled.
The front grout stop plate 4-3 is provided with a filling hole 4-4, the filling hole 4-4 is sequentially connected with a filling pipe 4-5 and a storage bottle 4-6, filling material slurry stored in the storage bottle 4-6 is filled into the goaf 2-1 through the filling pipe 4-5 and the filling hole 4-4 to reinforce the goaf 2-1, and the ball valve 4-7 is arranged on the filling pipe 4-5 to control the outflow of the filling material slurry, so that the volume of the filling material slurry in the goaf 2-1 is ensured.
It should be noted that the rear grout stop plate 4-9 is installed to enable the rear grout stop plate 4-9 to be in close contact with the rear side of the gob 2-1 in the similar simulated rock-soil layer 2 and to completely cover the gob 2-1, when the gob 2-1 is filled with filling material slurry, the rear side is blocked to prevent the filling material slurry from flowing out, and the filling material slurry is guaranteed to be capable of filling the gob 2-1.
As shown in fig. 1, the bottom of the two vertical rods 1-1 in this embodiment is provided with a support 1-4 for supporting the main frame 1. The main frame 1 is supported by the mounting supports 1-4, so that the stability of the similar simulation test platform is ensured.
As shown in fig. 2, the locking device 3-3 in this embodiment includes two threaded rods 3-3-1 respectively connecting two sets of front side vertical tubes 3-1 and rear side vertical tubes 3-2, two ends of the threaded rod 3-3-1 are respectively and vertically connected with steel plates 3-3-2, and two ends of the threaded rod 3-3-1 are further provided with locking nuts. The front vertical pipe 3-1 and the rear vertical pipe 3-2 are connected through the threaded rod 3-3-1 and are provided with the locking bolt 3-3-3, when the movable frame 3 needs to be fixed, the locking bolt 3-3-3 is screwed, the front vertical pipe 3-1 and the rear vertical pipe 3-2 are tightly fastened with the upper beam 1-2 to fix the movable frame 3, and the threaded rod 3-3-1 is vertically connected with the steel plate 3-3-2, so that the stability of the whole structure of the movable frame 3 is ensured.
The number of the locking devices 3-3 is two in the embodiment, and one of the two locking devices 3-3 is positioned on the upper surface of the upper cross beam 1-2, and the other locking device is positioned on the lower part of the upper cross beam 1-2. Two locking devices 3-3 are arranged at the upper position and the lower position of the upper cross beam 1-2, so that the fixing effect on the movable frame 3 is improved, and the stability during filling is ensured.
As shown in FIGS. 2 and 3, the saddle clamp 4-1 of the present embodiment is fixed to the front side vertical tube 3-1 or the rear side vertical tube 3-2 by a fastening bolt 4-1-1 and a fastening nut 4-1-2 at both ends. The riding card 4-1, the fastening bolt 4-1 and the fastening nut 4-1-2 are respectively arranged on the two front side vertical pipes 3-1 and the two rear side vertical pipes 3-2, the fastening nut 4-1-2 is unscrewed when the riding card 4-1 needs to be moved by arranging the filling device 4 on the movable frame 3, the riding card 4-1 is moved to a designated position, the fastening nut 4-1-2 is screwed after the riding card 4-1 is moved to the designated position, the riding card 4-1 is tightly clamped with the front side vertical pipe 3-1 or the rear side vertical pipe 3-2, the riding card 4-1 is fixed, the riding card 4-1 is moved up and down on the movable frame 3, and the front pulp stop plate 4-3 and the rear pulp stop plate 4-9 are ensured to be moved freely, therefore, the filling mechanism can fully cover the similar simulation rock-soil layer 2, and the filling of any goaf 2-1 of the similar simulation test platform can be ensured.
In the embodiment, EVA sponges are respectively stuck on one sides of the front grout stopping plate 4-3 and the rear grout stopping plate 4-9 close to the main frame 1. The EVA sponge is attached to the front grout stopping plate 4-3 and the rear grout stopping plate 4-9, so that grout leakage and leakage at the edge of the goaf 2-1 in the filling process are prevented, the filling material grout cannot leak from gaps among the front grout stopping plate 4-3, the rear grout stopping plate 4-9 and the similar simulation rock-soil layer 2 in the filling process, the filling effect is improved, and the front grout stopping plate 4-3 and the rear grout stopping plate 4-9 are prevented from damaging the surface of the similar simulation rock-soil layer 2 due to the fact that the EVA sponge has certain elasticity and sealing performance.
In the embodiment, the storage bottles 4-6 are provided with volume scales. The volume of the filling material slurry can be obtained by calculating the volume of the goaf 2-1, the filling amount is confirmed by scales, the complete filling of the goaf 2-1 is ensured, and the filling effect is improved.
The use method of the movable filling mechanism based on the similar simulation test platform is described in detail through embodiment 2 to embodiment 4.
Example 2
The embodiment comprises the following steps:
step one, paving a similar simulation rock-soil layer 2: determining materials required by the similar simulation rock-soil layer 2 according to the attributes of the rock-soil layer to be simulated, paving corresponding materials of the similar simulation rock-soil layer 2 on the similar simulation test platform from bottom to top in a layered paving and compacting mode, and simulating strip mining to extract the coal bed after the similar simulation rock-soil layer 2 is naturally air-dried to obtain the similar simulation test platform with the goaf 2-1;
step two, installing a movable filling mechanism:
mounting a movable filling mechanism on the similar simulation test platform with the goaf 2-1 obtained in the step one to obtain a similar simulation test platform with the movable filling mechanism; the goaf 2-1 is a strip goaf and/or a longwall working surface circulation operation goaf;
step three, filling the goaf 2-1:
filling the goaf 2-1 in the similar simulation test platform provided with the movable filling mechanism obtained in the step two by using a filling mechanism to obtain a filled similar simulation test platform; the filling process comprises the following steps: moving the filling mechanism to the goaf 2-1, enabling the front grout stopping plate 4-3 and the rear grout stopping plate 4-9 to be respectively positioned at two sides of the goaf 2-1, enabling the front grout stopping plate 4-3 and the rear grout stopping plate 4-9 to be tightly attached to the similar simulation rock-soil layer 2, then filling the filling material slurry in the storage bottle 4-6 into the goaf 2-1, closing the ball valve 4-7 after the filling material slurry is filled, moving the movable filling mechanism to the next goaf 2-1 for continuous filling after the filling material slurry is solidified, and repeating the filling process to obtain a filled similar simulation test platform; the filling material slurry is prepared from soil, gypsum powder and cellulose, wherein the mass ratio of the soil to the gypsum powder to the cellulose is as follows: 260: 60: 1.4, the cellulose is hydroxypropyl methyl cellulose.
Example 3
The embodiment comprises the following steps:
step one, paving a similar simulation rock-soil layer 2: determining materials required by the similar simulation rock-soil layer 2 according to the attributes of the rock-soil layer to be simulated, paving corresponding materials of the similar simulation rock-soil layer 2 on the similar simulation test platform from bottom to top in a layered paving and compacting mode, and simulating strip mining to extract the coal bed after the similar simulation rock-soil layer 2 is naturally air-dried to obtain the similar simulation test platform with the goaf 2-1;
step two, installing a movable filling mechanism:
installing two movable filling mechanisms on the similar simulation test platform with the goaf 2-1 obtained in the step one to obtain a similar simulation test platform with the movable filling mechanisms; the goaf 2-1 is a strip goaf;
step three, filling the goaf 2-1:
filling the goaf 2-1 in the similar simulation test platform provided with the movable filling mechanism obtained in the step two by adopting two filling mechanisms respectively to obtain a filled similar simulation test platform; the filling process comprises the following steps: moving the filling mechanism to the goaf 2-1, enabling the front grout stopping plate 4-3 and the rear grout stopping plate 4-9 to be respectively positioned at two sides of the goaf 2-1, enabling the front grout stopping plate 4-3 and the rear grout stopping plate 4-9 to be tightly attached to the similar simulation rock-soil layer 2, then filling the filling material slurry in the storage bottle 4-6 into the goaf 2-1, closing the ball valve 4-7 after the filling material slurry is filled, moving the movable filling mechanism to the next goaf 2-1 for continuous filling after the filling material slurry is solidified, and repeating the filling process to obtain a filled similar simulation test platform; the filling material slurry is prepared from soil, gypsum powder and cellulose, wherein the mass ratio of the soil to the gypsum powder to the cellulose is as follows: 260: 100: 1.0, the cellulose is hydroxypropyl methyl cellulose.
Example 4
The embodiment comprises the following steps:
step one, paving a similar simulation rock-soil layer 2: determining materials required by the similar simulation rock-soil layer 2 according to the attributes of the rock-soil layer to be simulated, paving corresponding materials of the similar simulation rock-soil layer 2 on the similar simulation test platform from bottom to top in a layered paving and compacting mode, and simulating strip mining to extract the coal bed after the similar simulation rock-soil layer 2 is naturally air-dried to obtain the similar simulation test platform with the goaf 2-1;
step two, installing a movable filling mechanism:
installing two movable filling mechanisms on the similar simulation test platform with the goaf 2-1 obtained in the step one to obtain a similar simulation test platform with the movable filling mechanisms; the goaf 2-1 is a long-wall working surface circulation operation goaf;
step three, filling the goaf 2-1:
filling the goaf 2-1 in the similar simulation test platform provided with the movable filling mechanism obtained in the step two by adopting two filling mechanisms respectively to obtain a filled similar simulation test platform; the filling process comprises the following steps: will charge
The filling mechanism moves to a goaf 2-1, so that a front grout stopping plate 4-3 and a rear grout stopping plate 4-9 are respectively positioned at two sides of the goaf 2-1, the front grout stopping plate 4-3 and the rear grout stopping plate 4-9 are tightly attached to the similar simulated rock-soil layer 2, then filling material slurry in a storage bottle 4-6 into the goaf 2-1, closing a ball valve 4-7 after the goaf is filled with the filling material slurry, moving the movable filling mechanism to the next goaf 2-1 for continuous filling after the filling material slurry is solidified, and repeating the filling process to obtain a filled similar simulation test platform; the filling material slurry is prepared from soil, gypsum powder and cellulose, wherein the mass ratio of the soil to the gypsum powder to the cellulose is as follows: 260: 80: 1.2, the cellulose is hydroxypropyl methyl cellulose.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modification, change and equivalent changes of the above embodiments according to the technical essence of the invention are still within the protection scope of the technical solution of the invention.
Claims (10)
1. The utility model provides a portable mechanism that fills based on analog simulation test platform, a serial communication port, analog simulation test platform includes main frame (1), main frame (1) includes two montants (1-1) and erects entablature (1-2) and bottom end rail (1-3) on two montants (1-1), it has analog simulation ground layer (2) to fill in main frame (1), install portable mechanism that fills on the analog simulation test platform, fill mechanism including moving frame (3) and install filler (4) on moving frame (3), moving frame (3) are including two front side standpipe (3-1) that are located main frame (1) front side and two rear side standpipe (3-2) that are located main frame (1) rear side, two front side standpipe (3-1) tip and two the tip of rear side standpipe (3-2) is through locking The device (3-3) is connected with each other, the filler (4) comprises two riding cards (4-1) arranged on a front vertical pipe (3-1) and two riding cards (4-1) arranged on a rear vertical pipe (3-2), a front pressing bolt (4-2) penetrating through the riding cards (4-1) is arranged in the middle of the riding card (4-1) on the front vertical pipe (3-1), a front grout stopping plate (4-3) is arranged at one end, facing the main frame (1), of the front pressing bolt (4-2), a filling hole (4-4) is formed in the front grout stopping plate (4-3), the filling hole (4-4) is sequentially connected with a filling pipe (4-5) and a material storage bottle (4-6), and a ball valve (4-7) is arranged on the filling pipe (4-5), the middle part of the riding clamp (4-1) on the rear side vertical pipe (3-2) is provided with a rear pressing bolt (4-8) penetrating through the riding clamp (4-1), and one end of the rear pressing bolt (4-8) facing the main frame (1) is provided with a rear grout stop plate (4-9).
2. The movable filling mechanism and method based on the simulation test platform as claimed in claim 1, wherein the bottom of each of the two vertical rods (1-1) is provided with a support (1-4) for supporting the main frame (1).
3. The movable filling mechanism and method based on the simulation modeling test platform as claimed in claim 1, wherein the locking device (3-3) comprises two threaded rods (3-3-1) respectively connecting two sets of front side vertical tubes (3-1) and rear side vertical tubes (3-2), the two ends of the threaded rods (3-3-1) are respectively and vertically connected with steel plates (3-3-2), and locking nuts are further mounted at the two ends of the threaded rods (3-3-1).
4. The movable filling mechanism and method based on the simulation test platform are characterized in that the number of the locking devices (3-3) is two, and one of the two locking devices (3-3) is positioned on the upper surface of the upper cross beam (1-2) and the other locking device is positioned at the lower part of the upper cross beam (1-2).
5. The movable filling mechanism and method based on the simulation modeling test platform of claim 1, wherein the horsecard (4-1) is fixed with the front side vertical pipe (3-1) or the rear side vertical pipe (3-2) through the fastening bolt (4-1-1) and the fastening nut (4-1-2) at both ends.
6. The movable filling mechanism and method based on the simulation modeling test platform as claimed in claim 1, wherein the front grout stop plate (4-3) and the rear grout stop plate (4-9) are adhered with EVA sponge on the side close to the main frame (1).
7. The movable filling mechanism and method based on the simulation test platform as claimed in claim 1, wherein the storage bottles (4-6) are provided with capacity scales.
8. Use of a movable filling mechanism based on a simulation simulator platform according to any of claims 1 to 7, characterized in that it comprises the following steps:
step one, paving a similar simulated rock-soil layer (2): determining materials required by the similar simulation rock-soil layer (2) according to the attributes of the rock-soil layer to be simulated, paving the materials corresponding to the similar simulation rock-soil layer (2) on the similar simulation test platform from bottom to top in a layered paving and compacting mode, and simulating strip mining to extract the coal bed after the similar simulation rock-soil layer (2) is naturally air-dried to obtain the similar simulation test platform with the goaf (2-1);
step two, installing a movable filling mechanism:
mounting a movable filling mechanism on the similar simulation test platform with the goaf (2-1) obtained in the step one to obtain a similar simulation test platform with the movable filling mechanism;
step three, filling a goaf (2-1):
filling the goaf (2-1) in the similar simulation test platform provided with the movable filling mechanism obtained in the step two by using a filling mechanism to obtain a filled similar simulation test platform; the filling process comprises the following steps: moving the filling mechanism to the goaf (2-1), enabling the front grout stopping plate (4-3) and the rear grout stopping plate (4-9) to be respectively positioned at two sides of the goaf (2-1), enabling the front grout stopping plate (4-3) and the rear grout stopping plate (4-9) to be tightly attached to the similar simulated rock-soil layer (2), then filling the filling material slurry in the storage bottle (4-6) into the goaf (2-1), closing the ball valve (4-7) after the filling material slurry is fully filled, moving the movable filling mechanism to the next goaf (2-1) for continuous filling after the filling material slurry is solidified, and repeating the filling process to obtain the filled similar simulated test platform.
9. The method according to claim 8, wherein the number of the movable filling mechanisms mounted on the simulation test platform in the step two is 1 or more; and in the second step, the goaf (2-1) is a strip goaf and/or a long-wall working surface circulating operation goaf.
10. The method of claim 8, wherein the filling material slurry in step three is prepared from soil, gypsum powder and cellulose, and the mass ratio of the soil to the gypsum powder to the cellulose is as follows: 260: 60-100: 1.0-1.4, wherein the cellulose is hydroxypropyl methyl cellulose.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08304385A (en) * | 1995-05-09 | 1996-11-22 | Marutaka Concrete Kogyo Kk | Measuring method for filling performance of high fluidity concrete and its device |
| CN102262148A (en) * | 2011-04-19 | 2011-11-30 | 中国矿业大学(北京) | Three-dimensional experiment platform for solid filling and mining of coal mine |
| CN102402892A (en) * | 2011-05-12 | 2012-04-04 | 中国矿业大学 | Filling mining plane strain simulation test device and method |
| CN205353043U (en) * | 2015-12-14 | 2016-06-29 | 辽宁建筑职业学院 | Fill slip casting test device |
| CN108226447A (en) * | 2018-01-31 | 2018-06-29 | 山东科技大学 | Coal underground mining surface movement three-dimensional simulation experimental rig and test method |
| CN108222938A (en) * | 2018-02-07 | 2018-06-29 | 西安科技大学 | A kind of large-inclination-angle coal bed goaf combination grouting filling recovery method |
| WO2019231845A1 (en) * | 2018-06-01 | 2019-12-05 | PARKER, Greg, H. | Technique and test fixture to conduct flow testing simulating a gravel pack in a lab environment at downhole conditions |
-
2021
- 2021-10-13 CN CN202111194270.7A patent/CN113917112B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08304385A (en) * | 1995-05-09 | 1996-11-22 | Marutaka Concrete Kogyo Kk | Measuring method for filling performance of high fluidity concrete and its device |
| CN102262148A (en) * | 2011-04-19 | 2011-11-30 | 中国矿业大学(北京) | Three-dimensional experiment platform for solid filling and mining of coal mine |
| CN102402892A (en) * | 2011-05-12 | 2012-04-04 | 中国矿业大学 | Filling mining plane strain simulation test device and method |
| CN205353043U (en) * | 2015-12-14 | 2016-06-29 | 辽宁建筑职业学院 | Fill slip casting test device |
| CN108226447A (en) * | 2018-01-31 | 2018-06-29 | 山东科技大学 | Coal underground mining surface movement three-dimensional simulation experimental rig and test method |
| CN108222938A (en) * | 2018-02-07 | 2018-06-29 | 西安科技大学 | A kind of large-inclination-angle coal bed goaf combination grouting filling recovery method |
| WO2019231845A1 (en) * | 2018-06-01 | 2019-12-05 | PARKER, Greg, H. | Technique and test fixture to conduct flow testing simulating a gravel pack in a lab environment at downhole conditions |
Non-Patent Citations (1)
| Title |
|---|
| 李杨杨;陈海瑞;郑勇;江宁;: "条带煤柱膏体充填开采覆岩运动物理模拟试验研究", 矿业研究与开发, no. 05 * |
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