CN116927786B - Coal pillar reinforcing method, coal pillar reinforcing device, electronic equipment and storage medium - Google Patents
Coal pillar reinforcing method, coal pillar reinforcing device, electronic equipment and storage medium Download PDFInfo
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- 239000003245 coal Substances 0.000 title claims abstract description 292
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
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- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
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Abstract
The invention discloses a coal pillar reinforcing method, a coal pillar reinforcing device, electronic equipment and a storage medium, wherein the method comprises the following steps: measuring the surface fracture structure of the coal pillar, and acquiring the distribution condition of the surface fracture of the coal pillar according to the measurement result; detecting the internal structural space of the coal pillar, and acquiring the internal structure of the coal pillar according to a detection result; adopting a drilling peeping instrument to carry out drilling correction on the internal structure of the coal pillar, and acquiring the spatial spreading characteristics of coal pillar crack development by combining the distribution condition of coal pillar surface cracks, wherein the spatial spreading characteristics comprise the volume and fractal dimension of the coal pillar cracks; determining grouting parameters according to the volume and the fractal dimension; grouting materials are injected into the coal pillar according to grouting parameters to strengthen the coal pillar. The method adopts the volume and the fractal dimension to represent the spatial distribution characteristics of the coal pillar cracks by detecting the inside and outside of the coal pillar cracks, determines grouting parameters according to the spatial distribution characteristics, and realizes the reinforcement of the coal pillar according to the grouting parameters so as to ensure the stability of the coal pillar and surrounding rock.
Description
Technical Field
The invention relates to the technical field of coal mine safety, in particular to a coal pillar reinforcing method, a coal pillar reinforcing device, electronic equipment and a storage medium.
Background
In order to improve the utilization rate of coal resources, the mining mode of supporting roadway surrounding rocks by reserving section coal pillars is widely used. However, in the deep mining process of the coal mine, the reserved section coal pillar is strongly influenced by mining disturbance, the original stress balance state of the coal pillar is easily damaged under the double effects of fixed supporting pressure and working face advanced supporting pressure, so that the internal stress of the coal pillar is redistributed, cracks in the coal pillar are cracked and expanded, if proper coal pillar reinforcing measures are not adopted, the deformation and the cracking of the coal pillar are aggravated, and the stability of surrounding rock on site is finally threatened.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent.
Therefore, a first object of the present invention is to provide a method for reinforcing a coal pillar, which detects the inside and outside of a coal pillar crack, adopts a volume and a fractal dimension to represent the spatial distribution characteristics of the coal pillar crack, determines grouting parameters based on the spatial distribution characteristics, and implements reinforcement of the coal pillar according to the grouting parameters, so as to ensure the stability of the coal pillar and surrounding rock and ensure the safe exploitation of coal.
A second object of the invention is to propose a coal pillar reinforcement.
A third object of the present invention is to propose an electronic device.
A fourth object of the present invention is to propose a computer readable storage medium.
A fifth object of the invention is to propose a computer programme product.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a method for reinforcing a coal pillar, including: measuring the surface fracture structure of the coal pillar, and acquiring the distribution condition of the surface fracture of the coal pillar according to the measurement result; detecting the internal structural space of the coal pillar, and acquiring the internal structure of the coal pillar according to a detection result; adopting a drilling peeping instrument to carry out drilling correction on the internal structure of the coal pillar, and combining the distribution condition of the coal pillar surface cracks to obtain the spatial spreading characteristics of coal pillar crack development; wherein the spatial spreading features include the volume and fractal dimension of the coal pillar fracture; determining grouting parameters according to the volume and the fractal dimension; and injecting grouting materials into the coal pillar according to the grouting parameters so as to strengthen the coal pillar.
According to the coal pillar reinforcing method provided by the embodiment of the invention, the coal pillar surface crack structure is measured, the distribution condition of the coal pillar surface cracks is obtained according to the measurement result, the coal pillar internal structure space is detected, the coal pillar internal structure is obtained according to the detection result, the drill hole peeping instrument is adopted to carry out the drill hole correction on the coal pillar internal structure, the distribution condition of the coal pillar surface cracks is combined, the spatial spreading characteristics of the coal pillar crack development are obtained, the spatial spreading characteristics comprise the volume and the fractal dimension of the coal pillar cracks, the grouting parameters are determined according to the volume and the fractal dimension, and the grouting material is injected into the coal pillar according to the grouting parameters, so that the coal pillar is reinforced. The method is characterized in that the inner and outer sides of the coal pillar cracks are detected, the volume and the fractal dimension are adopted to represent the spatial distribution characteristics of the coal pillar cracks, grouting parameters are determined according to the spatial distribution characteristics, and the reinforcement of the coal pillar is realized according to the grouting parameters, so that the stability of the coal pillar and surrounding rock is ensured, and the safe exploitation of coal is ensured.
In addition, the coal pillar reinforcement method provided by the embodiment of the invention can also have the following additional technical characteristics:
according to one embodiment of the invention, the determining grouting parameters according to the volume and the fractal dimension comprises:
judging whether the volume and the fractal dimension are larger than corresponding set values or not;
if so, the drilling arrangement, grouting pressure and drilling timing are determined.
According to one embodiment of the invention, the method further comprises:
checking grouting effect;
judging whether the grouting effect reaches a set condition according to the test result;
and if the grouting effect does not reach the set condition, re-grouting the coal pillar.
According to one embodiment of the present invention, the checking of grouting effect includes:
and (3) drilling and peeping the reinforced coal pillar, and monitoring deformation of roadway surrounding rock of the coal pillar.
According to one embodiment of the present invention, a process for making a grouting material includes:
crushing the initial framework material to obtain a target particle framework material;
and obtaining a pre-configured cementing material, and pouring the cementing material on the target particle framework material to obtain the target hole-rich filling grouting material.
In order to achieve the above object, a second aspect of the present invention provides a coal pillar reinforcement device, including: the first acquisition module is used for measuring the surface fracture structure of the coal pillar and acquiring the distribution condition of the surface fracture of the coal pillar according to the measurement result; the second acquisition module is used for detecting the internal structural space of the coal pillar and acquiring the internal structure of the coal pillar according to the detection result; the third acquisition module is used for carrying out drilling correction on the internal structure of the coal pillar by adopting a drilling peeping instrument, and acquiring the spatial spreading characteristics of the development of the coal pillar cracks by combining the distribution condition of the coal pillar surface cracks; wherein the spatial spreading features include the volume and fractal dimension of the coal pillar fracture; the determining module is used for determining grouting parameters according to the volume and the fractal dimension; and the reinforcement module is used for injecting grouting materials into the coal pillar according to the grouting parameters so as to reinforce the coal pillar.
According to the coal pillar reinforcing device provided by the embodiment of the invention, the first acquisition module is used for measuring the coal pillar surface crack structure, the distribution condition of the coal pillar surface crack is obtained according to the measurement result, the second acquisition module is used for detecting the inner structural space of the coal pillar, the inner structure of the coal pillar is obtained according to the detection result, the third acquisition module is used for carrying out drilling correction on the inner structure of the coal pillar by adopting a drilling peeping instrument, the distribution condition of the coal pillar surface crack is combined for obtaining the spatial distribution characteristics of the coal pillar crack development, the spatial distribution characteristics comprise the volume and the fractal dimension of the coal pillar crack, the determination module is used for determining grouting parameters according to the volume and the fractal dimension, and grouting materials are injected into the coal pillar according to the grouting parameters, so that the coal pillar is reinforced. Therefore, the device detects the inside and outside of the coal pillar cracks, adopts the volume and the fractal dimension to represent the spatial distribution characteristics of the coal pillar cracks, determines grouting parameters according to the spatial distribution characteristics, and realizes the reinforcement of the coal pillar according to the grouting parameters so as to ensure the stability of the coal pillar and surrounding rock and ensure the safe exploitation of coal.
In addition, the coal pillar reinforcing device provided by the embodiment of the invention can also have the following additional technical characteristics:
according to one embodiment of the present invention, the determining module is configured to determine the grouting parameter according to the volume and the fractal dimension, and includes:
judging whether the volume and the fractal dimension are larger than corresponding set values or not;
if so, the drilling arrangement, grouting pressure and drilling timing are determined.
According to one embodiment of the invention, the apparatus further comprises:
the inspection module is used for inspecting grouting effect;
the judging module is used for judging whether the grouting effect reaches a set condition according to the checking result;
and the grouting module is also used for re-grouting the coal pillar when the grouting effect does not reach the set condition.
According to one embodiment of the present invention, the inspection module is used for inspecting grouting effect, and includes:
and (3) drilling and peeping the reinforced coal pillar, and monitoring deformation of roadway surrounding rock of the coal pillar.
According to an embodiment of the present invention, the above apparatus further comprises:
the crushing treatment module is used for crushing the initial framework material to obtain a target particle framework material;
and the fourth acquisition module is used for acquiring the pre-configured cementing material, and pouring the cementing material on the target particle framework material to obtain the grouting material filled with the target rich holes.
To achieve the above object, an embodiment of a third aspect of the present invention provides an electronic device, including: a processor and a memory; the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to realize the coal pillar reinforcement method.
According to the electronic equipment provided by the embodiment of the invention, by executing the coal pillar reinforcement method, the inside and outside of the coal pillar cracks are detected, the space spreading characteristics of the coal pillar cracks are represented by adopting the volume and the fractal dimension, the grouting parameters are determined according to the space spreading characteristics, and the reinforcement of the coal pillar is realized according to the grouting parameters, so that the stability of the coal pillar and surrounding rock is ensured, and the safe exploitation of coal is ensured.
To achieve the above object, a fourth aspect of the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-mentioned coal pillar reinforcement method.
The computer readable storage medium of the embodiment of the invention adopts the volume and the fractal dimension to represent the spatial spreading characteristics of the coal pillar cracks by detecting the inside and outside of the coal pillar cracks through executing the coal pillar reinforcement method, and determines grouting parameters according to the spatial spreading characteristics, and realizes reinforcement of the coal pillar according to the grouting parameters so as to ensure the stability of the coal pillar and surrounding rock and ensure the safe exploitation of coal.
To achieve the above object, a fifth aspect of the present invention provides a computer program product, which when executed by an instruction processor in the computer program product, performs the above-mentioned method for reinforcing a coal pillar.
According to the computer program product provided by the embodiment of the invention, by executing the coal pillar reinforcement method, the inside and outside of the coal pillar cracks are detected, the space spreading characteristics of the coal pillar cracks are represented by adopting the volume and the fractal dimension, the grouting parameters are determined according to the space spreading characteristics, and the reinforcement of the coal pillar is realized according to the grouting parameters, so that the stability of the coal pillar and surrounding rock is ensured, and the safe exploitation of coal is ensured.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a flow chart of a method of coal pillar reinforcement according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a fracture development intense zone borehole layout according to one embodiment of the invention;
FIG. 3 is a schematic illustration of a fracture development sparse zone borehole layout, according to one embodiment of the present invention;
fig. 4 is a block schematic diagram of a coal pillar reinforcement apparatus according to an embodiment of the invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The following describes a coal pillar reinforcement method, a coal pillar reinforcement device, an electronic device and a storage medium according to an embodiment of the present invention with reference to the accompanying drawings.
At present, the supporting mode of the coal pillar mainly comprises anchor bolt supporting and grouting reinforcement, wherein the grouting reinforcement mainly utilizes a hydraulic or pneumatic mode to inject grouting materials into holes/cracks in the coal pillar, occupies the space of the cracks, improves the physical and mechanical properties of the coal pillar, slows down the further expansion and cracking of the cracks in the coal pillar, and enables the coal pillar to become a new structure with higher strength and stability. The grouting reinforcement effect of the coal pillar is directly restrained by the difficult problems of high technical difficulty in determining drilling parameters, undefined grouting time, undefined parameters and the like in the grouting process.
The invention provides a coal pillar reinforcement method for solving the problem of unsatisfactory grouting effect of a coal pillar, improving safety and stability of the coal pillar and guaranteeing safe exploitation of coal.
Fig. 1 is a flow chart of a method of coal pillar reinforcement according to an embodiment of the invention.
As shown in fig. 1, the coal pillar reinforcement method according to the embodiment of the invention includes:
s1, measuring the surface fracture structure of the coal pillar, and obtaining the distribution condition of the surface fracture of the coal pillar according to a measurement result.
In the step, a three-dimensional rock mass non-contact measurement system and a three-dimensional laser scanning system can be adopted to rapidly and accurately measure the surface fracture structure of the coal pillar, the occurrence and actual distribution conditions of each group of fractures are obtained according to measurement results, and the information such as the length, the inclination angle, the spacing and the joint linear density of each group of structural surface trace is calculated to obtain the distribution conditions of the surface fracture of the coal pillar.
S2, detecting the internal structural space of the coal pillar, and acquiring the internal structure of the coal pillar according to a detection result.
In the step, on the basis of measuring the surface fracture structure of the coal pillar, the geological radar is utilized to perform nondestructive detection on the internal structural space of the coal pillar, and inversion is carried out to obtain the internal structure of the coal pillar.
S3, performing drilling correction on the internal structure of the coal pillar by adopting a drilling peeping instrument, and acquiring the spatial spreading characteristics of the development of the coal pillar cracks by combining the distribution condition of the coal pillar surface cracks; wherein the spatial spread features include the volume and fractal dimension of the coal pillar fracture.
In the step, the volume of the coal pillar cracks can represent the occupation degree of the cracks to the space, so that the damage degree of the whole coal pillar is represented, and the volume of the coal pillar cracks can be obtained by utilizing a sphere formula; the fractal dimension of the coal pillar cracks can reflect the chaotic complexity degree and the irregular tortuosity degree of the cracks in the coal pillar, and the fractal dimension of the coal pillar cracks can be obtained by adopting a box counting method.
And S4, determining grouting parameters according to the volume and the fractal dimension.
In the step, the drilling arrangement, the grouting pressure and the drilling time are determined according to the expansion condition of the coal pillar fracture (the condition of the development of the mine pressure can be combined) mainly on the basis of the development of the coal pillar fracture. Wherein, the crack development area is arranged with denser drilling holes, and can set larger grouting pressure, and the grouting time is earlier than that of the crack development area.
Illustrating:
when the fracture volume of a certain area of the coal pillar is greater than or equal to the set volume and the fractal dimension is greater than or equal to the set fractal dimension, two upper and lower groups of holes can be arranged in the area, and the distance between the holes is smaller, for example, as shown in fig. 2, for a fracture dense area, the distance between the holes arranged in the upper and lower rows is 2m, the distance between the holes arranged in the upper and lower rows is 1.5m, and for a fracture sparse area, the distance between the holes arranged in the upper and lower rows is 3m, and for example, as shown in fig. 3, the distance between the holes arranged in the upper and lower rows is 1.5m, and for a fracture sparse area, the holes arranged in the lower row are arranged at a distance of 1.5m in the vertical direction between the positions between the holes arranged in the upper row;
when the fracture volume of a certain region of the coal pillar is greater than or equal to the set volume or the fractal dimension is greater than or equal to the set fractal dimension, the distance between the holes in the region can be increased, for example, for a fracture-dense region, the distance between the holes in the upper row and the lower row is 4m, the distance between the holes in the upper row and the lower row is 3m, the holes in the lower row are arranged at a vertical direction interval of 2m between the holes in the upper row, for another example, for a fracture sparse region, the distance between the holes in the upper row and the lower row is 6m, the distance between the holes in the upper row and the lower row is 4m, and the holes in the lower row are arranged at a vertical direction interval of 3m between the holes in the upper row.
The fracture volume in a certain area of the coal pillar is smaller than the set volume, and the fractal dimension is smaller than the set fractal dimension, so that grouting drilling holes can be omitted in the area.
That is, the process is to determine whether the volume and the fractal dimension are larger than the corresponding set values, and only when one of the volume and the fractal dimension is larger than the corresponding set value, the grouting is started to be selected, and the grouting timing is determined according to the selected grouting.
S5, injecting grouting materials into the coal pillar according to grouting parameters so as to strengthen the coal pillar.
In the step, grouting materials are injected into cracks of the coal pillar by grouting equipment according to grouting parameters so as to fill gaps in the coal pillar, and therefore reinforcement of the coal pillar is achieved.
Further, after the reinforcement of the coal pillar is completed, the method further comprises: checking grouting effect; judging whether the grouting effect reaches a set condition according to the test result; if the grouting effect does not reach the set condition, the coal pillar needs to be re-grouting.
That is, after the reinforcement of the coal pillar is completed, the crack inside the coal pillar after grouting reinforcement and the deformation of the surrounding rock of the roadway where the coal pillar is located are monitored, the deformation of the surrounding rock of the roadway and the deformation of the coal pillar are within a certain safety range, the grouting effect of the coal pillar is considered to be good, otherwise, the grouting step is required to be repeated for secondary grouting until the effect reaches the standard, so that the grouting effect is enhanced.
For example, the inspection process mainly comprises two parts, namely, carrying out drilling peeping on coal pillars in a fracture-dense area, and if the drilling peeping finds that the wall of a drilling hole is complete and no obvious fracture exists on the wall of the drilling hole, reaching the standard of grouting effect; and the second part is to monitor deformation of the surrounding rock of the coal pillar, and after grouting is completed, if the measurement finds that the deformation of the surrounding rock of the coal pillar tends to be stable, for example, the deformation of the surrounding rock of the coal pillar is controlled within 200mm, the deformation of the top plate is controlled within 150mm, and meanwhile, the whole coal pillar is basically not deformed any more, so that the grouting effect reaches the set condition. Otherwise, the secondary grouting is needed to be carried out on the coal pillar until the grouting effect reaches the set condition according to the detection result.
The process for manufacturing the grouting material comprises the following steps: crushing the initial framework material to obtain a target particle framework material; and obtaining a pre-configured cementing material, and pouring the cementing material on the target particle framework material to obtain the target hole-rich filling grouting material.
The process mainly uses solid wastes such as mine gangue, construction waste (waste concrete, waste bricks, waste granite and the like) and the like as an initial framework material, and cement mortar as a cementing material, so that the cementing slurry is fully cemented only in a particle contact area on the premise of not filling the pores of a particle framework, and a novel grouting material with certain overall rigidity and strength is formed.
In this embodiment, the grouting material is mainly composed of two materials, namely a material A and a material B.
The first material comprises massive gangue, construction waste concrete, waste bricks and waste granite which are generated in the coal mining process. The coal gangue is used as associated solid waste of coal mining, harmful elements in the coal gangue are dissolved and enter a water body or soil environment under the action of rainfall in the stacking process, certain damage is caused to nutrients in the soil, and the surrounding soil of the gangue is acidified when serious, so that the human health and vegetation growth are affected. Therefore, the gangue is used as an initial framework material, so that the treatment cost of the gangue can be reduced, and the ecological environment around the coal mine can be protected. In the process of manufacturing the grouting material, if the coal gangue reserves are insufficient, materials such as construction waste, waste concrete, waste bricks and the like can be further selected, so that on one hand, the amount of the initial framework material of the grouting material is increased, and on the other hand, the environmental pollution caused by industrial construction waste is reduced. The particle size range of the target particle framework material can be set in the crushing operation, and when the particle size of the crushed gangue is between the set particle size ranges, the gangue is discharged through a sieve plate and used as the target particle framework material; and when the particle size of the crushed gangue is not in the set particle size range, continuously crushing until the set particle size range is reached.
The material B is obtained by mixing cement, stone powder, a high-efficiency water reducing agent and the like, wherein the cement adopts PC32.5R type cement, the stone powder adopts 300-mesh high-purity grinding quartz sand powder, the water reducing additive adopts J115SD type, the water reducing agent has strong dispersing effect on the cement, and the fluidity of the cement mixture can be greatly improved under the condition of greatly reducing water consumption.
Finally, the selected two materials of the first material and the second material are mixed, and as the second material has certain viscosity and lower fluidity, the second material is adhered between the first materials when flowing through the first material, and after the second material between the first materials is kept still and fixed, a cementing state is formed between the first materials, and the first material particles are connected with each other, so that the porosity of the grouting material can reach 7-35 percent generally. The fluidity of the grouting slurry can be adjusted by adjusting the set grain size range of the first material and the proportion of the second material, and the prepared grouting slurry is stored for standby, so that the grouting effect of the coal pillar can be improved, and meanwhile, the grouting material has a certain effect of protecting the ecological environment around a coal mine.
In summary, according to the method for reinforcing a coal pillar in the embodiment of the present invention, the surface fracture structure of the coal pillar is measured, the distribution of the surface fracture of the coal pillar is obtained according to the measurement result, the internal structural space of the coal pillar is detected, the internal structural space of the coal pillar is obtained according to the detection result, the internal structural space of the coal pillar is corrected by adopting a drilling peeping instrument, the distribution of the surface fracture of the coal pillar is combined, the spatial distribution characteristics of the development of the coal pillar are obtained, the spatial distribution characteristics include the volume and the fractal dimension of the coal pillar fracture, the grouting parameters are determined according to the volume and the fractal dimension, and the grouting material is injected into the coal pillar according to the grouting parameters, so as to reinforce the coal pillar. The method is characterized in that the inner and outer sides of the coal pillar cracks are detected, the volume and the fractal dimension are adopted to represent the spatial distribution characteristics of the coal pillar cracks, grouting parameters are determined according to the spatial distribution characteristics, and the reinforcement of the coal pillar is realized according to the grouting parameters, so that the stability of the coal pillar and surrounding rock is ensured, and the safe exploitation of coal is ensured.
Fig. 4 is a block schematic diagram of a coal pillar reinforcement apparatus according to an embodiment of the invention.
As shown in fig. 4, the coal pillar reinforcement apparatus 400 according to the embodiment of the present invention includes: the first acquisition module 410, the second acquisition module 420, the third acquisition module 430, the determination module 440, and the reinforcement module 450.
The first obtaining module 410 is configured to measure a surface fracture structure of the coal pillar, and obtain a distribution of the surface fracture of the coal pillar according to a measurement result. The second obtaining module 420 is configured to detect an internal structural space of the coal pillar, and obtain an internal structure of the coal pillar according to a detection result. The third obtaining module 430 is configured to perform drilling correction on the internal structure of the coal pillar by using a drilling peeping instrument, and obtain a spatial distribution characteristic of development of coal pillar cracks in combination with a distribution condition of the coal pillar surface cracks; wherein the spatial spread features include the volume and fractal dimension of the coal pillar fracture. The determining module 440 is configured to determine grouting parameters based on the volume and the fractal dimension. The reinforcement module 450 is used for injecting grouting materials into the coal pillar according to the grouting parameters so as to reinforce the coal pillar.
According to one embodiment of the present invention, the determining module 440 is configured to determine grouting parameters according to the volume and the fractal dimension, and includes:
judging whether the volume and the fractal dimension are larger than corresponding set values;
if so, the drilling arrangement, grouting pressure and drilling timing are determined.
According to an embodiment of the present invention, the above apparatus further comprises:
the inspection module is used for inspecting grouting effect;
the judging module is used for judging whether the grouting effect reaches the set condition according to the checking result;
and the grouting module is also used for re-grouting the coal pillar when the grouting effect does not reach the set condition.
According to one embodiment of the present invention, when the inspection module is used for inspecting grouting effect, the inspection module comprises:
and (3) drilling and peeping the reinforced coal pillar, and monitoring deformation of surrounding rocks of a roadway of the coal pillar.
According to an embodiment of the present invention, the above apparatus further comprises:
the crushing treatment module is used for crushing the initial framework material to obtain a target particle framework material;
and the fourth acquisition module is used for acquiring the pre-configured cementing material, and pouring the cementing material on the target particle framework material to obtain the grouting material filled with the target rich holes.
It should be noted that, for details not disclosed in the coal pillar reinforcement device in the embodiment of the present invention, please refer to details disclosed in the coal pillar reinforcement method in the embodiment of the present invention, and details are not described here again.
According to the coal pillar reinforcing device provided by the embodiment of the invention, the first acquisition module is used for measuring the coal pillar surface crack structure, the distribution condition of the coal pillar surface crack is obtained according to the measurement result, the second acquisition module is used for detecting the inner structural space of the coal pillar, the inner structure of the coal pillar is obtained according to the detection result, the third acquisition module is used for carrying out drilling correction on the inner structure of the coal pillar by adopting a drilling peeping instrument, the distribution condition of the coal pillar surface crack is combined for obtaining the spatial distribution characteristics of the coal pillar crack development, the spatial distribution characteristics comprise the volume and the fractal dimension of the coal pillar crack, the determination module is used for determining grouting parameters according to the volume and the fractal dimension, and grouting materials are injected into the coal pillar according to the grouting parameters, so that the coal pillar is reinforced. Therefore, the device detects the inside and outside of the coal pillar cracks, adopts the volume and the fractal dimension to represent the spatial distribution characteristics of the coal pillar cracks, determines grouting parameters according to the spatial distribution characteristics, and realizes the reinforcement of the coal pillar according to the grouting parameters so as to ensure the stability of the coal pillar and surrounding rock and ensure the safe exploitation of coal.
Based on the embodiment, the invention further provides electronic equipment.
The electronic equipment of the embodiment of the invention comprises: a processor and a memory; the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to realize the coal pillar reinforcement method.
According to the electronic equipment provided by the embodiment of the invention, by executing the coal pillar reinforcement method, the inside and outside of the coal pillar cracks are detected, the space spreading characteristics of the coal pillar cracks are represented by adopting the volume and the fractal dimension, the grouting parameters are determined according to the space spreading characteristics, and the reinforcement of the coal pillar is realized according to the grouting parameters, so that the stability of the coal pillar and surrounding rock is ensured, and the safe exploitation of coal is ensured.
Based on the above embodiments, the present invention also proposes a computer-readable storage medium.
The computer readable storage medium of the embodiment of the invention stores a computer program which, when executed by a processor, implements the above-described coal pillar reinforcement method.
The computer readable storage medium of the embodiment of the invention adopts the volume and the fractal dimension to represent the spatial spreading characteristics of the coal pillar cracks by detecting the inside and outside of the coal pillar cracks through executing the coal pillar reinforcement method, and determines grouting parameters according to the spatial spreading characteristics, and realizes reinforcement of the coal pillar according to the grouting parameters so as to ensure the stability of the coal pillar and surrounding rock and ensure the safe exploitation of coal.
Based on the above embodiments, the present invention also proposes a computer program product.
When the instruction processor in the computer program product of the embodiment of the invention executes, the coal pillar reinforcement method is executed.
According to the computer program product provided by the embodiment of the invention, by executing the coal pillar reinforcement method, the inside and outside of the coal pillar cracks are detected, the space spreading characteristics of the coal pillar cracks are represented by adopting the volume and the fractal dimension, the grouting parameters are determined according to the space spreading characteristics, and the reinforcement of the coal pillar is realized according to the grouting parameters, so that the stability of the coal pillar and surrounding rock is ensured, and the safe exploitation of coal is ensured.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and additional implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order from that shown or discussed, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. As with the other embodiments, if implemented in hardware, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present invention may be integrated in one module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like. While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (8)
1. A method of coal pillar reinforcement, comprising:
measuring the surface fracture structure of the coal pillar, and acquiring the distribution condition of the surface fracture of the coal pillar according to the measurement result;
detecting the internal structural space of the coal pillar, and acquiring the internal structure of the coal pillar according to a detection result;
adopting a drilling peeping instrument to carry out drilling correction on the internal structure of the coal pillar, and combining the distribution condition of the coal pillar surface cracks to obtain the spatial spreading characteristics of coal pillar crack development; the space spreading features comprise the volume and the fractal dimension of the coal pillar cracks, wherein the volume of the coal pillar cracks represents the occupation degree of the cracks to the space, the overall damage degree of the coal pillar is represented, the volume of the coal pillar cracks is obtained by utilizing a sphere formula, the fractal dimension of the coal pillar cracks reflects the chaotic complexity degree and the irregular tortuosity degree of the cracks in the coal pillar, and the fractal dimension of the coal pillar cracks is obtained by adopting a box counting method;
judging whether the volume and the fractal dimension are larger than corresponding set values or not;
if yes, determining grouting parameters, wherein the grouting parameters comprise drilling arrangement, grouting pressure and drilling time, and determining corresponding grouting time;
and injecting grouting materials into the coal pillar according to the grouting parameters and the grouting time so as to strengthen the coal pillar.
2. The method according to claim 1, wherein the method further comprises:
checking grouting effect;
judging whether the grouting effect reaches a set condition according to the test result;
and if the grouting effect does not reach the set condition, re-grouting the coal pillar.
3. The method of claim 2, wherein said verifying grouting effects comprises:
and (3) drilling and peeping the reinforced coal pillar, and monitoring deformation of roadway surrounding rock of the coal pillar.
4. The method of claim 1, wherein the process of making the grouting material comprises:
crushing the initial framework material to obtain a target particle framework material;
and obtaining a pre-configured cementing material, and pouring the cementing material on the target particle framework material to obtain the target hole-rich filling grouting material.
5. A coal pillar reinforcement apparatus, comprising:
the first acquisition module is used for measuring the surface fracture structure of the coal pillar and acquiring the distribution condition of the surface fracture of the coal pillar according to the measurement result;
the second acquisition module is used for detecting the internal structural space of the coal pillar and acquiring the internal structure of the coal pillar according to the detection result;
the third acquisition module is used for carrying out drilling correction on the internal structure of the coal pillar by adopting a drilling peeping instrument, and acquiring the spatial spreading characteristics of the development of the coal pillar cracks by combining the distribution condition of the coal pillar surface cracks; wherein the spatial spreading features include the volume and fractal dimension of the coal pillar fracture;
the determining module is used for judging whether the volume and the fractal dimension are larger than corresponding set values, if so, determining grouting parameters, wherein the grouting parameters comprise drilling arrangement, grouting pressure and drilling time, and determining corresponding grouting time;
and the reinforcing module is used for injecting grouting materials into the coal pillar according to the grouting parameters and the grouting time so as to reinforce the coal pillar.
6. The apparatus of claim 5, wherein the apparatus further comprises:
the inspection module is used for inspecting grouting effect;
the judging module is used for judging whether the grouting effect reaches a set condition according to the checking result;
and the grouting module is also used for re-grouting the coal pillar when the grouting effect does not reach the set condition.
7. An electronic device, comprising:
a processor and a memory;
wherein the processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory for implementing the coal pillar reinforcement method according to any one of claims 1-4.
8. A computer readable storage medium having stored thereon a computer program, which when executed by a processor implements the coal pillar consolidation method according to any one of claims 1-4.
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