CN116427996B - Management system and method for realizing grouting filling by using ground gas extraction pipe - Google Patents
Management system and method for realizing grouting filling by using ground gas extraction pipe Download PDFInfo
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- 238000000605 extraction Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005553 drilling Methods 0.000 claims abstract description 128
- 238000007726 management method Methods 0.000 claims abstract description 21
- 238000009412 basement excavation Methods 0.000 claims description 39
- 238000012545 processing Methods 0.000 claims description 39
- 238000005065 mining Methods 0.000 claims description 26
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- 238000005265 energy consumption Methods 0.000 abstract description 8
- 238000010276 construction Methods 0.000 description 11
- 239000003245 coal Substances 0.000 description 10
- 238000007569 slipcasting Methods 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
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- 238000003672 processing method Methods 0.000 description 1
- 238000012502 risk assessment Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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Abstract
The invention discloses a management system and a method for realizing grouting filling by using a ground gas extraction pipe, and relates to the technical field of management methods for realizing grouting filling by using the ground gas extraction pipe; acquiring a gas time coefficient value at each moment in each drilling hole, acquiring absolute values of gas time coefficient difference values of any two drilling holes at the same moment according to the gas time coefficient, and determining whether cracks among the drilling holes are communicated or not according to the absolute values of the gas time coefficient difference values. The two-in-one pipe of the gas drainage pipe and the grouting filling pipe is controlled by the control module to start and stop the operation of the two-in-one pipe in the drilling, so that the situation that crack pressure is overlarge due to simultaneous gas drainage and grouting filling in two directions or multiple directions is avoided, gas drainage and grouting filling in cracks are not facilitated, and energy consumption is further reduced.
Description
Technical Field
The invention belongs to the field of geological engineering, and relates to a management method for realizing grouting filling by using a ground gas extraction pipe, in particular to a management system and a management method for realizing grouting filling by using a ground gas extraction pipe.
Background
Coal mining is a complex and bulky project that is generally specialized in geological engineering, and is directly related to the safety of mining and surrounding area residents and the life and property safety of mining personnel. Two steps of underground gas extraction and underground crack grouting filling are usually required before coal mining.
The coal mine gas extraction is a key safety measure, the gas content and pressure in the coal mine can be effectively reduced by drilling holes in the coal bed and the gas gathering area and extracting the gas to the ground or discharging the gas into the total return air flow, the gas overrun and accumulation are avoided, the occurrence of gas explosion and coal and gas outburst accidents is prevented, in addition, the underground crack grouting filling treatment is an important prevention measure for coal exploitation, and the principle is that a certain slurry is injected into the underground crack, and a solid structure is formed through hardening and bonding, so that the geological structure is reinforced and stabilized. The underground crack grouting filling generally selects proper grouting filling materials, grouting is performed in the underground crack through drilling and other modes, the underground crack is fully filled with the grouting, a solid structure is formed, the treatment mode can effectively reduce the expansion and development of the underground crack, prevent instability of a coal seam roof or a coal pillar, ensure the safety and stability of coal mine production, and moreover, underground cracks are unevenly distributed, whether the cracks are communicated with each other or not is difficult to survey accurately through the prior art, however, when gas extraction and grouting filling are performed in the crack in practice, as the underground gas is continuously extracted and the underground crack is continuously grouting filled, the negative pressure value generated in the underground crack is increasingly larger, and the construction consideration scope of the underground crack gas extraction and grouting filling does not bring about the generation of extremely large energy waste and the influence on the construction efficiency of the underground crack gas extraction and grouting filling.
Disclosure of Invention
The present invention aims to at least solve the technical problems existing in the prior art. Therefore, the invention provides a management system and a method for realizing grouting filling by using a ground gas extraction pipe, which enable the gas concentration in a drill hole to be detected in real time by using a gas concentration sensor, and further strategically adjust the gas extraction in the drill hole and the grouting filling in the drill hole, so that the two pipes of the gas extraction pipe and the grouting filling pipe are integrated, the construction cost is reduced, the energy consumption is reduced, the connectivity of underground cracks is judged by using a weather period coefficient, and meanwhile, the classification is carried out according to the safety risk on the ground, so that the underground exploitation is orderly conducted, the scientific guiding construction is facilitated, and the exploitation construction safety is ensured.
To achieve the above object, according to an embodiment of the first aspect of the present invention, a management system and a method for implementing grouting filling by using a ground gas extraction pipe are provided, and the management method for implementing grouting filling by using the ground gas extraction pipe includes the following steps:
a management method for realizing grouting filling by using a ground gas extraction pipe comprises the following steps:
placing a two-in-one pipeline in the drilling hole, wherein the two-in-one pipeline is used for performing gas drainage in the drilling hole and grouting filling treatment in the drilling hole;
acquiring a gas concentration value, temperature data and humidity data in a drill hole;
acquiring gas time coefficient values for each time in each borehole wherein />A gas time coefficient value representing the nth drilling at the nth time;
according to the gas time coefficientAcquiring absolute value of difference value of gas time coefficients of any two holes at the same time Representing the absolute value of the difference value of the gas time coefficients of the mth and nth drilling holes at the t time;
according to the difference of gas time coefficientsAbsolute value ofDetermining whether cracks among drilling holes are communicated or not, wherein specific judgment logic is as follows:
setting a gas time coefficient standard threshold W0;
if it isThe crack communication between the n and m drilling holes is shown, and when grouting filling operation is carried out, only any two-in-one pipeline in the n and m drilling holes is started to carry out grouting filling and gas drainage;
if it isThe crack between the nth and the mth drilling holes is not communicated, and when grouting filling operation is carried out, two-in-one pipelines in the nth and the mth drilling holes are required to be simultaneously started for grouting filling and gas drainage.
Further, the value of the body time coefficientThe acquisition steps are as follows: the gas time coefficient +/for each moment in each borehole is calculated using dimensionless processing>The specific calculation is as follows:
in the above, a 0 Representing the temperature coefficient, b 0 Represents the humidity coefficient, c 0 Represents the gas concentration coefficient d 0 The sign of the addition of the constant is that,indicating the temperature value at the nth drilling point t, < >>Indicating the drill humidity value of the nth drill at the nth time point,/->And (5) indicating the drilling gas concentration value at the nth drilling and the t moment.
Further, absolute value of gas time differenceThe processing steps are as follows:
taking difference of gas time coefficients of different drilling holes at the same moment to obtain absolute value of gas time difference of drilling holesThe specific calculation is as follows:
further, the management method for realizing grouting filling by using the ground gas extraction pipe further comprises the following steps: gridding the production area, wherein each grid comprises a plurality of drilling holes;
counting the time required by each drilling hole in each grid to discharge the gas concentration value below the safe concentration value according to the following stepsMaking a representation in which->Representing the time required for the gas concentration in the ith drill hole of the B grid to be acquired to the standard safe concentration;
traversingEach value of (a) and t B Alignment, wherein t B Representing the average time to reduce the gas concentration in n boreholes in the B grid to a safe threshold;
if the gas extraction time of all the drilling holes in the grid is less than or equal to t B The grid is a geological risk-free area;
if the gas extraction time in any one of the holes in the grid is greater than t B The grid is a first geological risk area.
Further, setting a ground surface dangerous area and a ground surface normal area on the ground surface of the mining area according to whether the hazard factors exist or not; among them, the hazard factor is a factor that brings direct hazard to surface residents or underground mining. The specific judgment logic is as follows:
if the grid has hazard factors, the surface of the mining area is set as a surface hazard area;
if no hazard factors exist in the grid, the surface of the mining area is set as a normal surface area.
Further, the management method for realizing grouting filling by using the ground gas extraction pipe comprises the following steps: comprehensively analyzing the geological risk free region, the first geological risk region, the ground surface risk region and the ground surface normal region to obtain a first preferential excavation region, a second preferential excavation region and a third preferential excavation region; the specific processing logic is as follows:
the grid area is a situation A with a geological risk-free area and a ground surface normal area; the grid areas are simultaneously; the grid area is a situation B of both a geological risk free area and a ground surface risk area; the grid area is a situation that a first geological risk area and a ground normal area are C at the same time; the grid area is a situation D in which the first geological risk area and the ground surface risk area are both the first geological risk area and the ground surface risk area;
setting a grid area with the situation A as a first preferential excavation area; setting a grid area with the B situation and the C situation as a second preferential excavation area; the mesh region having the D case is set as the third excavation region.
A management system for realizing grouting filling by using a ground gas extraction pipe comprises:
the two-in-one pipe is used for being placed in a drill hole to carry out gas drainage and grouting filling treatment on the drill hole;
the first detection module is used for acquiring a gas concentration value, temperature data and humidity data in the drill hole;
a first processing module for obtaining gas time coefficient value of each time in each drilling hole wherein />A gas time coefficient value representing the nth drilling at the nth time;
a first processing module for processing the gas according to the gas time coefficientAcquiring absolute value of difference value of gas time coefficients of any two holes at the same time> Representing the absolute value of the difference value of the gas time coefficients of the mth and nth drilling holes at the t time;
a first analysis module for analyzing the absolute value of the difference value of the gas time coefficientsDetermining whether cracks among drilling holes are communicated or not, wherein specific judgment logic is as follows:
setting a gas time coefficient standard threshold W0;
if it isThe crack communication between the n and m drilling holes is shown, and when grouting filling operation is carried out, only any two-in-one pipeline in the n and m drilling holes is started to carry out grouting filling and gas drainage;
if it isIndicating crack discontinuity between the n and m-th drill holes for grouting and fillingDuring filling operation, two-in-one pipelines in m and n drilling holes are required to be simultaneously opened for grouting filling and gas drainage;
wherein the modules are connected through an electrical and/or wireless network. .
Further, the gas time coefficient valueThe acquisition steps are as follows:
the gas time coefficient of each moment in each drilling hole is calculated by adopting a dimensionless processing modeThe specific calculation is as follows:
in the above, a 0 Representing the temperature coefficient, b 0 Represents the humidity coefficient, c 0 Represents the gas concentration coefficient d 0 The sign of the addition of the constant is that,a value representing the value of the gas moment coefficient at the nth borehole at the t moment, < >>Indicating the temperature value at the nth drilling point t, < >>Indicating the drill humidity value of the nth drill at the nth time point,/->Representing the gas concentration value of the nth drilling hole at the time t;
absolute value of gas time differenceThe processing steps are as follows:
taking difference of gas time coefficients of different drilling holes at the same moment to obtain absolute value of gas time difference of drilling holesThe specific calculation is as follows:
wherein ,a value representing the value of the gas moment coefficient at the t moment in the mth borehole,/->The gas time coefficient value at the nth drilling time t is shown.
Further, the management system for realizing grouting filling by using the ground gas extraction pipe further comprises: the second processing module is used for carrying out gridding processing on the production area, wherein each grid comprises a plurality of drill holes;
a second processing module for counting the time required by each drilling hole in each grid to discharge the gas concentration value below the safe concentration value according to the following stepsMaking a representation in which->Representing the time required for the gas concentration in the ith drill hole of the B grid to be acquired to the standard safe concentration;
a second analysis module traversingEach value of (a) and T B Alignment, wherein T B Representing the average time to reduce the gas concentration in n boreholes in the B grid to a safe threshold;
if all of the gridsDrilling gas extraction time is less than or equal to T B The grid is a geological risk-free area;
if the gas extraction time in any one of the holes in the grid is longer than T B The grid is a first geological risk area.
Further, the management system for realizing grouting filling by using the ground gas extraction pipe further comprises: the third analysis module is used for setting a ground surface dangerous area and a ground surface normal area for the ground surface of the mining area according to whether the hazard factors exist or not; the hazard factor is a factor that brings direct hazard to surface residents or underground mining.
The specific judgment logic is as follows:
if the grid has hazard factors, the surface of the mining area is set as a surface hazard area;
if no hazard factors exist in the grid, setting the surface of the mining area as a normal surface area;
comprehensively analyzing the geological risk free region, the first geological risk region, the ground surface risk region and the ground surface normal region to obtain a first preferential excavation region, a second preferential excavation region and a third preferential excavation region; the specific processing logic is as follows:
the grid area is a situation A with a geological risk-free area and a ground surface normal area; the grid areas are simultaneously; the grid area is a situation B of both a geological risk free area and a ground surface risk area; the grid area is a situation that a first geological risk area and a ground normal area are C at the same time; the grid area is a situation D in which the first geological risk area and the ground surface risk area are both the first geological risk area and the ground surface risk area;
setting a grid area with the situation A as a first preferential excavation area; setting a grid area with the B situation and the C situation as a second preferential excavation area; the mesh region having the D case is set as the third excavation region.
Compared with the prior art, the invention has the following beneficial effects:
1. obtaining the absolute value of the difference value of the gas time at the same time interval between any two boreholes by calculating the weather time interval coefficient in the boreholesThe value is used for judging connectivity between the cracks by setting the allowable error, after judging connectivity between the cracks, the control module is used for controlling the two-in-one pipeline in the drilling to start and stop operation, so that the situation that the crack pressure is overlarge due to simultaneous gas drainage and grouting filling in two directions or multiple directions is avoided, the gas drainage and grouting filling in the cracks are not facilitated, and the energy consumption is further reduced.
2. Through setting up the gas concentration detection model on two unification pipelines, through judging real-time gas extraction concentration in the drilling, through setting up first safe concentration value K0 and second safe concentration value Kmax of allowing, when the gas concentration in the drilling is less than first safe concentration value K0 of allowing, utilize the extraction pipe to carry out slip casting filling work, along with the underground crack is gradually filled by thick liquid after, the gas in the crack is by continuous extrusion to the drilling, when the gas concentration value in the drilling reaches Kmax, control module control extraction pipe stops the slip casting and fills, simultaneously, control module control gas two unification pipelines carry out the gas extraction work, along with gas extraction and slip casting filling cycle are reciprocal, until with gas extraction and slip casting filling work to the end, through two pipe unification pipelines with gas extraction pipe and slip casting filling pipe like this, construction procedure has been reduced, work load has been reduced, simultaneously reduce the energy consumption.
3. The method comprises the steps of performing gridding treatment on the ground, dividing the ground into a first geological risk area and a non-geological risk area according to the average time comparison between the time required for pumping the gas concentration of holes drilled in each grid to reach the standard concentration and the average time required for reducing the gas concentration value of all the gas in the grid to be allowed, dividing the ground into a normal area of the earth surface risk area according to the grid according to the risk factors of the ground of the grid, dividing the grid into a first preferential excavation area, a second preferential excavation area and a third preferential excavation area in a superposition mode, and guiding the underground excavation construction sequence more scientifically, so that a certain risk is avoided.
Drawings
FIG. 1 is a schematic flow chart of the method of the present invention;
FIG. 2 is a schematic diagram of a system framework of the present invention;
FIG. 3 is a schematic view of a portion of a borehole, two-in-one pipe, fracture, etc. in accordance with the present invention;
FIG. 4 is a schematic view of an underground fracture in the present invention.
In the figure, 1, drilling; 2. a two-in-one pipe; 3. cracking; 100. a first detection module; 200. a first processing module; 300. a first analysis module; 400. a second processing module; 500. a second analysis module; 600. and a third analysis module.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1, the management method for realizing grouting filling by using the ground gas extraction pipe comprises the following steps:
s101, acquiring a gas concentration value in a borehole 1 through a two-in-one pipeline;
s102, comparing the gas concentration value in the drilling hole 1 with a first allowable safety concentration value K0 and a second allowable safety concentration value Kmax, and controlling gas collection and grouting filling to perform corresponding operation through a control unit, wherein the specific logic is as follows:
if the gas concentration value in the drill hole 1 is smaller than the first safe concentration value K0, grouting filling is carried out through the extraction pipe;
if the gas concentration value in the drill hole 1 is equal to the second safety allowable concentration value Kmax, gas extraction is carried out through an extraction pipe;
wherein, the gas collection module and the grouting filling control module do not operate simultaneously.
The control unit is used for controlling gas drainage and grouting filling of the two-in-one pipeline;
the first detection module is arranged on the gas pipeline and is used for detecting the concentration of gas in the underground cracks 3;
it should be noted that, in general, there are many cracks 3 in the ground, and when grouting is performed on the ground, gas such as gas in the underground cracks 3 is compressed until being discharged, that is, when grouting is performed on the underground cracks 3, as the space of the underground cracks 3 gradually decreases, the pressure in the underground cracks 3 is also increased, the gas concentration in the cracks 3 is also increased, the grouting cost is increased under the condition of high pressure, and meanwhile, the gas concentration in the cracks 3 is increased, and a higher safety risk is brought.
For this purpose, a first safe permissible concentration K0 and a second safe permissible concentration value Kmax > K0>0 are provided, wherein Kmax is expressed as a maximum safe concentration value of permitted gas, kmax is a critical value indicating that when the concentration in the fracture 3 is higher than Kmax, the underground fracture 3 is extremely prone to risk when reaching the extreme value, and K0 is an extreme value for optimal gas drainage and optimal energy consumption.
Specifically, when the two-in-one pipeline 2 is inserted into the drill hole 1 to remove gas, the first detection module detects that the gas concentration in the drill hole 1 is greater than K0, the control unit performs gas drainage work, when the first detection module detects that the gas concentration in the drill hole 1 reaches K0, the control unit stops gas drainage and starts grouting treatment, when the gas in the crack 3 is continuously extruded into the drill hole 1 along with grouting, the gas concentration in the relatively airtight drill hole 1 can be continuously increased, when the concentration in the drill hole 1 is increased to Kmax, the control unit stops grouting treatment, simultaneously starts gas drainage work, and then the operation state is analogized sequentially until the underground crack 3 is completely filled by safe grouting.
Compared with the prior art, the scheme has the advantages that the gas extraction pipe is used for extracting gas and grouting and filling the underground cracks 3, the two purposes of one pipe are achieved through the scheme, the cost is reduced, and the construction difficulty is reduced to a certain extent. In addition, set up first safe concentration K0 and second safe concentration value Kmax that allows, through setting up first detection module, collection module and getting the gas in the uninterrupted drainage underground crack 3 and carrying out slip casting filling to underground crack 3 and handle, it is safer to fill to slip casting after comparing traditional drainage gas, and can reduce the energy consumption.
As shown in fig. 1, 3 and 4, since the distribution of the underground cracks 3 is uneven, the conventional technical means cannot detect whether or not the individual cracks 3 are connected and how to distribute, and determine whether or not the underground cracks 3 are too single in connection and poor in anti-interference capability by detecting a certain gas concentration value. Therefore, on the basis of embodiment 1, a temperature sensor and a humidity sensor are further disposed on the gas drainage pipeline, and connectivity of the crack 3 is determined by a method for determining the gas time coefficient value in each borehole 1 at each time according to a time interval by using a dimensionless processing mode, and a specific calculation formula of the gas time coefficient Wn of the underground crack 3 is as follows:
the gas time coefficient calculation formula is as follows:
in the above, a 0 Representing the temperature coefficient, b 0 Represents the humidity coefficient, c 0 Represents the gas concentration coefficient d 0 The sign of the addition of the constant is that,a value representing the value of the gas moment coefficient at the nth borehole at the t moment, < >>Indicating the temperature value at the nth drilling point t, < >>Represents the humidity value of the drill hole 1 at the nth drill hole and the t moment, ">And (5) representing the gas concentration value of the drill hole 1 at the nth drill hole and the t moment.
Setting a standard threshold value W0, W0 of gas time coefficient>0 by drilling any twoThe gas time coefficients at the same time between holes 1 are subjected to difference calculation to obtain the absolute value of the gas time difference of the drilling holes 1 The calculation formula is as follows:
in the above-mentioned method, the step of,a value representing the value of the gas moment coefficient at the mth moment of the mth borehole,/->A gas time coefficient value representing an nth borehole at a t-th time; the specific processing logic is as follows:
calculating different drilling holes 1 at the same time through a gas time coefficient formula;
the gas time coefficient values between different drilling holes 1 at the same time are subjected to pairwise difference to obtain the absolute value of the gas time difference value;
absolute value of differenceComparing with W0, if->The method is characterized in that the cracks 3 between the n and m drilling holes are communicated, when grouting filling or gas drainage operation is carried out, only any one of the n and m drilling holes is started, so that the situation that the gas drainage of the underground cracks 3 is not facilitated due to simultaneous work between the communicated drilling holes can be avoided, the pressure intensity in the cracks 3 is increased when filling or gas drainage is carried out on a group, and the energy consumption is reduced; in other cases, grouting and filling are needed to be carried out by opening the extraction pipes in the m and n drill holesAnd (5) filling.
If it isThe mth drilling hole 1 and the nth drilling hole 1 are not communicated through the crack 3, and grouting filling treatment is required to be carried out by opening the extraction pipes in the m drilling hole 1 and the n drilling hole 1.
In this embodiment, by providing a temperature sensor, a humidity sensor and a gas concentration sensor in the borehole 1, normalizing a plurality of variables, calculating gas time coefficients in the respective boreholes, and calculating absolute values of borehole gas time differences between m and n boreholes within the same time periodJudging whether the cracks 3 between m and n are communicated or not, strategically adjusting the cracks 3 between m and n by controlling the grouting filling module, so that the air pressure in the cracks 3 can be well controlled to a certain extent, the air in the cracks 3 is conveniently discharged, and the part for stopping grouting filling can reduce certain energy consumption.
Example 2
In this embodiment, as shown in fig. 1, 3 and 4, the concentration of different gas detected at different boreholes 1 is continuously reduced, the time for grouting and filling after the different boreholes are extracted to reach the standard gas concentration is different, in general, the larger the underground slits 3 are, the more the communication between the slits 3 is, the longer the time for gas drainage reaches the standard threshold, that is, the time required for gas concentration drainage is positively related to the size of the slits 3 and the communication relation between the slits 3, and the longer the time required for grouting and filling the slits 3 is, so that it is very important to determine how to scientifically guide the construction sequence according to the existing data, and in the case of relatively poor underground geology, the lower the construction priority is, and the time required for pumping the gas concentration in each borehole 1 to the safety threshold is arranged according to the time required for extracting the gas concentration in the boreholes 1 to the safety threshold in order to scientifically guide the construction.
Gridding the positions of different drilling holes 1, wherein each gridding position is provided with a plurality of drilling holes 1, and the utilization time for exhausting the gas concentration in each drilling hole 1 to below the safe concentration is used in the areaWherein B represents a B-th grid, 1-u represent drilling 1 marks, T B u Representing the time required by the gas concentration in the ith drilling hole 1 in the ith grid to be acquired into the standard safe concentration, calculating the average gas drainage time TB of each drilling hole in each grid, wherein Tn represents the average time for the gas concentration value drainage in all drilling holes 1 to be below the safe concentration value, and comparing the gas drainage time of the drilling holes 1 in the gridding with the corresponding TB in the grid respectively, wherein the specific comparison logic is as follows:
if the arbitrary time of the grid is longer than T0, the grid is set as a first geological risk area, the area is not easy to be mined, and the drilling 1 with the acquisition time longer than T0 is carried out again.
If all the adoption time in the grid is less than or equal to T0, the grid is a geological risk-free area, and the method is suitable for preferential exploitation.
In addition, for the situation of whether the mining is met, the natural situation of the ground surface of the mining area is required to be referred to, aiming at the areas with frequent activities and accumulation ranges of surrounding citizens such as residential grounds, factories and the like, important consideration is required before the mining, the ground surface has a large water area, the risk of leakage collapse is easy to cause in the later underground mining, and the like, which are called hazard factors, any ground surface hazard area which is harmful to the later underground is set on the ground, other ground surface normal areas are set, and the ground surface hazard area can be directly drawn on a map.
The extraction time of the drilling holes 1 in the comprehensive grid and the earth surface risk condition are comprehensively analyzed, and specific risk analysis logic is as follows:
if the grid is a geological risk free area and a normal earth surface area at the same time, the grid area is a first preferential excavation area;
if the grid area is a combination of the first geological risk area and the normal earth surface area or the non-geological risk area and the earth surface risk area, the area is regarded as a second preferential excavation area;
if the grid area is a combination of the first geological risk area and the earth surface risk area, the area is a third preferential excavation area.
After gridding treatment and analysis, the excavated areas are subjected to grading treatment, and the first, second and third preferential excavation areas are sequentially divided once, so that the third and second preferential excavation areas are favorable for grouting and filling of the underground cracks 3, enough solidification and maintenance time is provided, the excavation safety is ensured, and scientific excavation is guided.
Example 3
As shown in fig. 2, a management system for implementing grouting filling by using a ground gas extraction pipe includes:
the two-in-one pipeline 2 is used for placing in a drill hole to perform gas drainage and grouting filling treatment on the drill hole;
the first detection module 100 is used for acquiring a gas concentration value, temperature data and humidity data in a drilling hole;
a first processing module 200 for obtaining gas time coefficient values for each time in each borehole wherein />A gas time coefficient value representing the nth drilling at the nth time;
gas time coefficient valueThe acquisition steps are as follows:
the gas time coefficient of each moment in each drilling hole is calculated by adopting a dimensionless processing modeThe specific calculation is as follows:
in the above, a 0 Representing the temperature coefficient, b 0 Represents the humidity coefficient, c 0 Represents the gas concentration coefficient d 0 The sign of the addition of the constant is that,a value representing the value of the gas moment coefficient at the nth borehole at the t moment, < >>Indicating the temperature value at the nth drilling point t, < >>Indicating the drill humidity value of the nth drill at the nth time point,/->Representing the gas concentration value of the nth drilling hole at the time t;
absolute value of gas time differenceThe processing steps are as follows:
taking difference of gas time coefficients of different drilling holes at the same moment to obtain absolute value of gas time difference of drilling holesThe specific calculation is as follows:
wherein ,a value representing the value of the gas moment coefficient at the t moment in the mth borehole,/->The gas time coefficient value at the nth drilling time t is shown.
The first processing module 100 is based on the gas time coefficientAcquiring absolute value of difference value of gas time coefficients of any two holes at the same time> Representing the absolute value of the difference value of the gas time coefficients of the mth and nth drilling holes at the t time;
the first analysis module 300 is configured to determine an absolute value of the difference between the gas time coefficientsDetermining whether cracks among drilling holes are communicated or not, wherein specific judgment logic is as follows:
setting a gas time coefficient standard threshold W0;
if it isThe crack communication between the n and m drilling holes is shown, and when grouting filling operation is carried out, only one two-in-one pipeline 2 in the n and m drilling holes is started for grouting filling and gas drainage;
if it isThe fact that cracks between the n and m drilling holes are not communicated is indicated, and when grouting filling operation is carried out, two-in-one pipelines 2 in the m and n drilling holes are required to be simultaneously started for grouting filling and gas drainage;
wherein the modules are connected through an electrical and/or wireless network.
A first detection module 100 is arranged on the two-in-one pipeline and is used for acquiring temperature data, humidity and gas concentration data in the drill hole 1The method comprises the steps of carrying out a first treatment on the surface of the Calculating gas time coefficient of each moment of crack 3 in each drill hole 1 by using dimensionless processing mode temperature data, humidity and gas concentration dataThe specific calculation is as follows:
in the above, a 0 Representing the temperature coefficient, b 0 Represents the humidity coefficient, c 0 Represents the gas concentration coefficient d 0 The sign of the addition of the constant is that,a value representing the value of the gas moment coefficient at the nth borehole at the t moment, < >>Indicating the temperature value at the nth drilling point t, < >>Represents the humidity value of the drill hole 1 at the nth drill hole and the t moment, ">Representing the gas concentration value of the drill hole 1 at the nth drill hole and the t moment;
acquiring absolute value of gas time difference value between any two drill holes 1 in the same time period
Absolute value of gas time differenceThe processing steps are as follows:
calculating the gas time coefficient value of each drilling hole at different moments by using a gas time coefficient formula;
different bores 1 at the same momentObtaining absolute value of gas time difference of drilling 1 by taking difference of gas time coefficientsAbsolute value of the gas time difference by drilling 1 +.>Judging whether the drill holes 1 are communicated or not, setting a gas time coefficient standard threshold W0, and specifically judging and operating logic as follows:
if it isThe crack 3 between the n and m drilling holes 1 is communicated, when grouting filling operation is carried out, only one drilling hole 1 of the n and m drilling holes 1 is required to be opened for grouting filling, and in other cases, the extraction pipes in the m and n drilling holes 1 are required to be opened for grouting filling treatment.
As shown in fig. 2, 3 and 4, in this embodiment, the production area is subjected to gridding treatment, wherein each grid includes a plurality of drill holes 1;
the second processing module 400 performs gridding processing on the production area, wherein each grid comprises a plurality of drill holes;
the second processing module 400 counts the time required for each borehole in each grid to drain the gas concentration value below the safe concentration value according to the followingMaking a representation in which->Representing the time required for the gas concentration in the ith drill hole of the B grid to be acquired to the standard safe concentration; wherein the grid is
The second analysis module 500 traversesEach value of (a) and T B Alignment, wherein T B Representing n boreholes in a B gridAverage time for the gas concentration to decrease to the safety threshold;
if the gas extraction time of all the holes in the grid is less than or equal to T B The grid is a geological risk-free area;
if the gas extraction time in any one of the holes in the grid is longer than T B The grid is a first geological risk area.
The third analysis module 600 sets a surface dangerous area 700 and a surface normal area for the surface of the mining area according to whether the hazard factors exist or not; the hazard factor is a factor that brings direct hazard to surface residents or underground mining.
The specific judgment logic is as follows:
if the grid has hazard factors, the surface of the mining area is set as a surface hazard area;
if no hazard factors exist in the grid, setting the surface of the mining area as a normal surface area;
comprehensively analyzing the geological risk free region, the first geological risk region, the ground surface risk region and the ground surface normal region to obtain a first preferential excavation region, a second preferential excavation region and a third preferential excavation region; the specific processing logic is as follows:
the grid area is a situation A with a geological risk-free area and a ground surface normal area; the grid areas are simultaneously; the grid area is a situation B of both a geological risk free area and a ground surface risk area; the grid area is a situation that a first geological risk area and a ground normal area are C at the same time; the grid area is a situation D in which the first geological risk area and the ground surface risk area are both the first geological risk area and the ground surface risk area;
setting a grid area with the situation A as a first preferential excavation area; setting a grid area with the B situation and the C situation as a second preferential excavation area; the mesh region having the D case is set as the third excavation region.
The intelligent data processing system provided by the embodiment of the invention can execute the intelligent data processing method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
All the included modules are only divided according to the functional logic, but are not limited to the above-mentioned division, so long as the corresponding functions can be realized; in addition, the specific names of the functional modules are only for distinguishing from each other, and are not used for limiting the protection scope of the present invention.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (8)
1. The management method for realizing grouting filling by using the ground gas extraction pipe is characterized by comprising the following steps of:
placing a two-in-one pipeline in the drilling hole, wherein the two-in-one pipeline is used for performing gas drainage in the drilling hole and grouting filling treatment in the drilling hole;
acquiring a gas concentration value, temperature data and humidity data in a drill hole;
acquiring gas time coefficient values for each time in each borehole, wherein />A gas time coefficient value representing the nth drilling at the nth time;
according to the gas time coefficientAcquiring absolute value of difference value of gas time coefficients of any two holes at the same time；/>Representing the absolute value of the difference value of the gas time coefficients of the mth and nth drilling holes at the t time;
according to the absolute value of the difference of the gas time coefficientsDetermining whether cracks among drill holes are communicated or not, wherein specific judgment logic is as follows:
setting a gas time coefficient standard threshold W0;
if it isW0 is less than the fracture communication between the n-th drilling hole and the m-th drilling hole, and when grouting filling operation is carried out, only any two-in-one pipeline in the n-th drilling hole and the m-th drilling hole is required to be started for grouting filling and gas drainage;
if it isNot less than W0, which means that cracks between the nth and the mth drilling holes are not communicated, and when grouting filling operation is carried out, two-in-one pipelines in the nth and the mth drilling holes are required to be simultaneously started for grouting filling and gas drainage;
gas time coefficient valueThe acquisition steps are as follows:
the gas time coefficient of each moment in each drilling hole is calculated by adopting a dimensionless processing modeThe specific calculation is as follows:
+/>；
in the above-mentioned method, the step of,representing the temperature coefficient>Indicating the humidity coefficient>Representing the gas concentration coefficient, < >>The sign of the addition of the constant is that,indicating the temperature value at the nth drilling point t, < >>The drilling humidity value at the nth drilling time t is represented, and nt represents the drilling gas concentration value at the nth drilling time t.
2. The method for managing grouting filling by using ground gas extraction pipe according to claim 1, wherein the absolute value of the gas time difference valueThe processing steps are as follows:
taking difference of gas time coefficients of different drilling holes at the same moment to obtain absolute value of gas time difference of drilling holesThe specific calculation is as follows:
。
3. the management method for realizing grouting filling by using a ground gas extraction pipe according to any one of claims 1-2, further comprising the steps of:
gridding the production area, wherein each grid comprises a plurality of drilling holes;
counting the time required by each drilling hole in each grid to discharge the gas concentration value below the safe concentration value according to the following steps,/>,…，/>) Making a representation in which->Representing the time required for the gas concentration in the ith drill hole of the B grid to be acquired to the standard safe concentration;
traversing%,/>,…，/>) Each value of (a) and t B Alignment, wherein t B Representing the average time to reduce the gas concentration in n boreholes in the B grid to a safe threshold;
if the gas extraction time of all the drilling holes in the grid is less than or equal to t B The grid is a geological risk-free area;
if the gas extraction time in any one of the holes in the grid is greater than t B The grid is a first geological risk area.
4. The method for managing grouting filling by using a ground gas extraction pipe according to claim 3, wherein,
setting a ground surface dangerous area and a ground surface normal area on the ground surface of the mining area according to the existence of hazard factors; wherein, the hazard factors are factors which bring direct hazard to residents on the surface or underground exploitation;
the specific judgment logic is as follows:
if the grid has hazard factors, the surface of the mining area is set as a surface hazard area;
if no hazard factors exist in the grid, the surface of the mining area is set as a normal surface area.
5. The method for realizing grouting filling by using a ground gas extraction pipe according to claim 4, wherein the first, second and third preferential excavation areas are obtained according to comprehensive analysis of a geological risk-free area, a first geological risk area, a ground surface risk area and a ground surface normal area; the specific processing logic is as follows:
the grid area is a situation A with a geological risk-free area and a ground surface normal area; the grid area is a situation B of both a geological risk free area and a ground surface risk area; the grid area is a situation that a first geological risk area and a ground normal area are C at the same time; the grid area is a situation D in which the first geological risk area and the ground surface risk area are both the first geological risk area and the ground surface risk area;
setting a grid area with the situation A as a first preferential excavation area; setting a grid area with the B situation and the C situation as a second preferential excavation area; the mesh region having the D case is set as the third excavation region.
6. A management system for realizing grouting filling by using a ground gas extraction pipe is characterized by comprising:
the two-in-one pipe is used for being placed in a drill hole to carry out gas drainage and grouting filling treatment on the drill hole;
the first detection module is used for acquiring a gas concentration value, temperature data and humidity data in the drill hole;
a first processing module for obtaining gas time coefficient value of each time in each drilling hole, wherein />A gas time coefficient value representing the nth drilling at the nth time;
a first processing module for processing the gas according to the gas time coefficientAcquiring absolute value of difference value of gas time coefficients of any two holes at the same time>；/>Representing the absolute value of the difference value of the gas time coefficients of the mth and nth drilling holes at the t time;
a first analysis module for analyzing the absolute value of the difference value of the gas time coefficientsDetermining whether cracks among drill holes are communicated or not, wherein specific judgment logic is as follows:
setting a gas time coefficient standard threshold W0;
if it isW0 is less than the fracture communication between the n-th drilling hole and the m-th drilling hole, and when grouting filling operation is carried out, only any two-in-one pipeline in the n-th drilling hole and the m-th drilling hole is required to be started for grouting filling and gas drainage;
if it isNot less than W0, which means that cracks between the n and m drilling holes are not communicated, and when grouting filling operation is carried out, two-in-one pipelines in the m and n drilling holes are required to be simultaneously opened for grouting filling and gas drainage;
wherein, each module is connected by an electric and/or wireless network mode;
gas time coefficient valueThe acquisition steps are as follows:
the gas time coefficient of each moment in each drilling hole is calculated by adopting a dimensionless processing modeThe specific calculation is as follows:
+/>；
in the above-mentioned method, the step of,representing the temperature coefficient>Indicating the humidity coefficient>Representing the gas concentration coefficient, < >>The sign of the addition of the constant is that,a value representing the value of the gas moment coefficient at the nth borehole at the t moment, < >>Indicating the temperature value at the nth drilling point t, < >>Indicating the humidity of the nth drilling hole at the time tThe value, nt, represents the value of the gas concentration of the nth drilling hole at the time t;
absolute value of gas time differenceThe processing steps are as follows:
taking difference of gas time coefficients of different drilling holes at the same moment to obtain absolute value of gas time difference of drilling holesThe specific calculation is as follows:
；
wherein ,a value representing the value of the gas moment coefficient at the t moment in the mth borehole,/->The gas time coefficient value at the nth drilling time t is shown.
7. The system for managing grouting packing using a surface gas extraction pipe according to claim 6, comprising:
the second processing module is used for carrying out gridding processing on the production area, wherein each grid comprises a plurality of drill holes;
the second processing module counts the time required by each drilling hole in each grid to discharge the gas concentration value below the safe concentration value according to the following steps of,/>,…，/>) Making a representation in which->Representing the time required for the gas concentration in the ith drill hole of the B grid to be acquired to the standard safe concentration;
the second analysis module traverses%,/>,…，/>) Each value of (a) and T B Alignment, wherein T B Representing the average time to reduce the gas concentration in n boreholes in the B grid to a safe threshold;
if the gas extraction time of all the holes in the grid is less than or equal to T B The grid is a geological risk-free area;
if the gas extraction time in any one of the holes in the grid is longer than T B The grid is a first geological risk area.
8. The management system for grouting filling using a ground gas extraction pipe according to claim 7, comprising:
the third analysis module is used for setting a ground surface dangerous area and a ground surface normal area for the ground surface of the mining area according to whether the hazard factors exist or not; the hazard factors are factors which bring direct hazard to surface residents or underground exploitation;
the specific judgment logic is as follows:
if the grid has hazard factors, the surface of the mining area is set as a surface hazard area;
if no hazard factors exist in the grid, setting the surface of the mining area as a normal surface area;
comprehensively analyzing the geological risk free region, the first geological risk region, the ground surface risk region and the ground surface normal region to obtain a first preferential excavation region, a second preferential excavation region and a third preferential excavation region; the specific processing logic is as follows:
the grid area is a situation A with a geological risk-free area and a ground surface normal area; the grid area is a situation B of both a geological risk free area and a ground surface risk area; the grid area is a situation that a first geological risk area and a ground normal area are C at the same time; the grid area is a situation D in which the first geological risk area and the ground surface risk area are both the first geological risk area and the ground surface risk area;
setting a grid area with the situation A as a first preferential excavation area; setting a grid area with the B situation and the C situation as a second preferential excavation area; the mesh region having the D case is set as the third excavation region.
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