Coal seam roof and floor dynamic partition evaluation method based on multiple geological factors

Abstract

The invention discloses a coal seam roof and floor dynamic partition evaluation method based on multiple geological factors, and belongs to the technical field of geological exploration and mine safety mining, and the method comprises the steps: obtaining geological data of a target region, and generating a geological evaluation index of the target region; judging whether the geological condition of the target area is stable or not according to the geological evaluation index of the target area; obtaining geological environment data of the target area, and generating a geological environment evaluation index; according to the geological environment evaluation index and the geological evaluation index, generating a stability evaluation index of the coal seam roof and floor of the target area; according to the stability evaluation index of the coal seam roof and floor of the target area, judging whether the dynamic partition of the coal seam roof and floor meets the requirement or not; according to the method, the stability evaluation index of the coal seam roof and floor of the target area is generated through the geological data of the target area and the geological environment data of the target area, the stability of the coal seam roof and floor is evaluated, and more accurate evaluation of the coal seam roof and floor dynamic partition is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical fields of geological exploration and safe coal mine mining, and particularly relates to a method for evaluating the dynamic zoning of coal seam roof and floor based on multiple geological factors. Background Art

[0002] During the process of coal mine mining, the stability of the coal seam roof and floor directly affects the safety and production efficiency of the mine.

[0003] Traditional evaluation methods for coal seam roof and floor are mostly based on single geological factors (such as lithology, thickness, etc.), and it is difficult to comprehensively reflect the dynamic characteristics of the roof and floor under complex geological conditions. With the increase of coal mine mining depth, the geological conditions become more complex, and the dynamic problems of the roof and floor become increasingly prominent. There is a need for a zoning evaluation method that comprehensively considers multiple geological factors to improve the evaluation accuracy and practicality. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a method for evaluating the dynamic zoning of coal seam roof and floor based on multiple geological factors, which solves the above problems.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A method for evaluating the dynamic zoning of coal seam roof and floor based on multiple geological factors, including the following steps:

[0006] Obtain the geological data of the target area and generate the geological evaluation index of the target area; the geological data includes the inclination angle of the coal seam, the thickness of the coal seam, and the fracture length of the rocks of the coal seam roof and floor; the fracture length refers to the average length of all fractures;

[0007] Judge whether the geological conditions of the target area are stable according to the geological evaluation index of the target area;

[0008] Obtain the geological environment data of the target area and generate the geological environment evaluation index; the geological environment data includes the interlayer hydraulic pressure and the interlayer temperature;

[0009] Generate the stability evaluation index of the coal seam roof and floor of the target area according to the geological environment evaluation index and the geological evaluation index;

[0010] Judge whether the dynamic zoning of the coal seam roof and floor of the target area meets the requirements according to the stability evaluation index of the coal seam roof and floor of the target area.

[0011] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0012] Further technical solution: The step of obtaining the geological data of the target area and generating the geological evaluation index of the target area specifically includes the following steps:

[0013] Obtain the inclination angle of the coal seam in the target area and generate an evaluation coefficient for the coal seam inclination angle;

[0014] Obtain the thickness of the coal seam in the target area and generate an evaluation coefficient for the coal seam thickness;

[0015] Obtain the crack length of the roof and floor rocks of the coal seam and generate an evaluation coefficient for the crack length;

[0016] Generate a geological evaluation index for the target area based on the evaluation coefficient of the coal seam inclination angle, the evaluation coefficient of the coal seam thickness, and the evaluation coefficient of the crack length.

[0017] Further technical solution: The specific generation method of the evaluation coefficient of the coal seam inclination angle is as follows:

[0018] Obtain the inclination angle of the coal seam in the target area, perform a difference operation on the inclination angle of the coal seam in the target area and the inclination angle threshold to generate an inclination angle difference;

[0019] Perform a ratio operation on the inclination angle difference and the inclination angle threshold to generate an evaluation coefficient for the coal seam inclination angle;

[0020] Among them, the specific generation method of the evaluation coefficient of the coal seam thickness is as follows:

[0021] Obtain the thickness of the coal seam in the target area, perform a difference operation on the thickness of the coal seam in the target area and the thickness threshold to generate a thickness difference;

[0022] Perform a ratio operation on the thickness difference and the thickness threshold to generate an evaluation coefficient for the coal seam thickness;

[0023] Among them, the specific generation method of the evaluation coefficient of the crack length is as follows:

[0024] Obtain the crack length of the roof and floor rocks of the coal seam, perform a difference operation on the crack length of the roof and floor rocks of the coal seam and the length threshold to generate a length difference; The length threshold refers to the average value of the rock length and width;

[0025] Among them, the specific generation method of the geological evaluation index of the target area is as follows:

[0026] Generate the geological evaluation index Pr of the target area through the formula Pr = Rq * a1 + Hm * a2 + Lf * a3;

[0027] In the formula, Rq represents the evaluation coefficient of the coal seam inclination angle, Hm represents the evaluation coefficient of the coal seam thickness, Lf represents the evaluation coefficient of the crack length, and a1, a2, and a3 are all weight coefficients.

[0028] Further technical solution: Determine whether the geological condition of the target area is stable according to the geological evaluation index of the target area, and the specific judgment method is as follows:

[0029] Compare the geological evaluation index of the target area with the threshold value of the geological evaluation index of the target area;

[0030] If the geological evaluation index of the target area is less than or equal to the threshold value of the geological evaluation index of the target area, it means that the smaller the geological evaluation index of the target area, the more stable the geological situation of the target area is, then it is determined that the geological state of the target area tends to be stable;

[0031] If the geological evaluation index of the target area is greater than the threshold value of the geological evaluation index of the target area, it means that the larger the geological evaluation index of the target area, the more unstable the geological situation of the target area is, then it is determined that the geological state of the target area tends to be unstable.

[0032] Further technical solution: The obtaining of the geological environment data of the target area and generating the geological environment evaluation index specifically includes the following steps:

[0033] Obtain the interlayer hydraulic pressure of the target area and generate the interlayer hydraulic pressure influence coefficient of the target area;

[0034] Obtain the interlayer temperature of the target area and generate the interlayer temperature influence coefficient of the target area;

[0035] Establish a geological environment impact evaluation model, substitute the interlayer hydraulic pressure influence coefficient of the target area and the interlayer temperature influence coefficient of the target area into the geological environment impact evaluation model, and generate the geological environment evaluation index.

[0036] Further technical solution: The generation method of the interlayer hydraulic pressure influence coefficient of the target area is specifically as follows:

[0037] Obtain the interlayer hydraulic pressure of the target area, perform a difference processing on the interlayer hydraulic pressure of the target area and the threshold value of the interlayer hydraulic pressure of the target area to generate a pressure difference;

[0038] Perform a ratio processing on the pressure difference and the threshold value of the interlayer hydraulic pressure of the target area to generate the interlayer hydraulic pressure influence coefficient of the target area;

[0039] Among them, the generation method of the interlayer temperature influence coefficient of the target area is specifically as follows:

[0040] Obtain the interlayer temperature of the target area, perform a ratio processing on the interlayer temperature of the target area and the temperature threshold value to generate a temperature difference; the temperature threshold value refers to the lowest value at which the interlayer temperature causes an explosion of explosive gas in the interlayer;

[0041] Perform a ratio processing on the temperature difference and the temperature threshold value to generate the interlayer temperature influence coefficient of the target area.

[0042] Further technical solution: The expression of the geological environment impact assessment model is as follows:

[0043] Hk = Fc * α + Tc * (1 - St) * β;

[0044] In the expression, Hk represents the geological environment assessment index, Fc represents the interlayer hydraulic pressure influence coefficient of the target area, Tc represents the interlayer temperature influence coefficient of the target area, and St represents the predicted heat dissipation efficiency of the heat dissipation means during mining in the target area.

[0045] Further technical solution: The specific method for generating the stability assessment index of the coal seam roof and floor in the target area is as follows:

[0046] Through the formula Generate the stability assessment index Wp of the coal seam roof and floor in the target area;

[0047] In the formula, Wp represents the stability assessment index of the coal seam roof and floor in the target area, Pr represents the geological evaluation index, and Hk represents the geological environment assessment index.

[0048] Further technical solution: According to the stability assessment index of the coal seam roof and floor in the target area, determine whether the dynamic zoning of the coal seam roof and floor meets the requirements. The specific judgment method is as follows:

[0049] Compare the stability assessment index of the coal seam roof and floor in the target area with the threshold value of the stability assessment index of the coal seam roof and floor in the target area; the threshold value of the stability assessment index of the coal seam roof and floor in the target area refers to the highest value of the dynamic zoning standard in the target area;

[0050] If the stability assessment index of the coal seam roof and floor in the target area is less than or equal to the threshold value of the stability assessment index of the coal seam roof and floor in the target area, it means that the smaller the stability assessment index of the coal seam roof and floor in the target area, the better the stability of the coal seam roof and floor in the target area, and the more compliant the dynamic zoning of the coal seam roof and floor is;

[0051] If the stability assessment index of the coal seam roof and floor in the target area is greater than the threshold value of the stability assessment index of the coal seam roof and floor in the target area, it means that the larger the stability assessment index of the coal seam roof and floor in the target area, the worse the stability of the coal seam roof and floor in the target area, and the less compliant the dynamic zoning of the coal seam roof and floor is.

[0052] The present invention provides a method for evaluating the dynamic zoning of the coal seam roof and floor based on multiple geological factors. Compared with the prior art, it has the following beneficial effects:

[0053] The present invention generates a geological evaluation index for the target area through geological data of the target area, then generates a geological environment evaluation index through geological environment data of the target area, and then comprehensively analyzes the geological evaluation index and the geological environment evaluation index to generate a stability evaluation index for the roof and floor of the coal seam in the target area, so as to evaluate the stability of the roof and floor of the coal seam, realizing a more accurate evaluation of the dynamic zoning of the roof and floor of the coal seam. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a flowchart of a method for evaluating the dynamic zoning of the roof and floor of a coal seam based on multiple geological factors provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0055] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0056] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0057] Please refer to Figure 1 , which is a method for evaluating the dynamic zoning of the roof and floor of a coal seam based on multiple geological factors provided by an embodiment of the present invention, including the following steps:

[0058] Step S10: Obtain the geological data of the target area and generate a geological evaluation index for the target area; the geological data includes the inclination angle of the coal seam, the thickness of the coal seam, and the crack length of the rocks of the roof and floor of the coal seam; the crack length refers to the average length of all cracks;

[0059] Step S20: Determine whether the geological conditions of the target area are stable according to the geological evaluation index of the target area;

[0060] Step 30: Obtain the geological environment data of the target area and generate a geological environment evaluation index; the geological environment data includes the interlayer hydraulic pressure and the interlayer temperature;

[0061] Step 40: Generate a stability evaluation index for the roof and floor of the coal seam in the target area according to the geological environment evaluation index and the geological evaluation index;

[0062] Step S50: Determine whether the dynamic zoning of the roof and floor of the coal seam meets the requirements according to the stability evaluation index of the roof and floor of the coal seam in the target area.

[0063] As a preferred embodiment of the present invention, the step S10 specifically includes the following steps:

[0064] Step S11: Obtain the inclination angle of the coal seam in the target area and generate an evaluation coefficient for the inclination angle of the coal seam;

[0065] Among them, the generation method of the coal seam dip angle evaluation coefficient is specifically as follows:

[0066] Obtain the dip angle of the coal seam in the target area, perform a difference operation on the dip angle of the coal seam in the target area and the dip angle threshold to generate a dip angle difference;

[0067] Perform a ratio operation on the dip angle difference and the dip angle threshold to generate a coal seam dip angle evaluation coefficient;

[0068] Step S12: Obtain the thickness of the coal seam in the target area and generate a coal seam thickness evaluation coefficient;

[0069] Among them, the generation method of the coal seam thickness evaluation coefficient is specifically as follows:

[0070] Obtain the thickness of the coal seam in the target area, perform a difference operation on the thickness of the coal seam in the target area and the thickness threshold to generate a thickness difference;

[0071] Perform a ratio operation on the thickness difference and the thickness threshold to generate a coal seam thickness evaluation coefficient;

[0072] It should be noted that the greater the thickness of the coal seam, the more cavities will be left after the coal seam is mined, the pressure borne by the coal seam will be released, and the roof is prone to excessive compression or deformation;

[0073] Step S13: Obtain the crack length of the coal seam roof and floor rocks and generate a crack length evaluation coefficient;

[0074] Among them, the generation method of the crack length evaluation coefficient is specifically as follows:

[0075] Obtain the crack length of the coal seam roof and floor rocks, perform a difference operation on the crack length of the coal seam roof and floor rocks and the length threshold to generate a length difference; the length threshold refers to the average value of the length and width of the rock;

[0076] Perform a ratio operation on the length difference and the length threshold to generate a crack length evaluation coefficient;

[0077] Step S14: Generate a geological evaluation index for the target area according to the coal seam dip angle evaluation coefficient, the coal seam thickness evaluation coefficient, and the crack length evaluation coefficient;

[0078] Among them, the generation method of the geological evaluation index of the target area is specifically as follows:

[0079] Perform a weighted sum of the coal seam dip angle evaluation coefficient, the coal seam thickness evaluation coefficient, and the crack length evaluation coefficient to generate a geological evaluation index for the target area;

[0080] Exemplarily, the geological evaluation index Pr of the target area is generated by the formula Pr = Rq * a1 + Hm * a2 + Lf * a3;

[0081] In the formula, Rq represents the evaluation coefficient of the coal seam dip angle, Hm represents the evaluation coefficient of the coal seam thickness, Lf represents the evaluation coefficient of the fracture length, and a1, a2, and a3 are all weight coefficients.

[0082] As a preferred embodiment of the present invention, the determination method of step S20 is specifically as follows:

[0083] Compare the geological evaluation index of the target area with the threshold value of the geological evaluation index of the target area;

[0084] If the geological evaluation index of the target area is less than or equal to the threshold value of the geological evaluation index of the target area, it means that the smaller the geological evaluation index of the target area, the more stable the geological situation of the target area is, then it is determined that the geological state of the target area tends to be stable;

[0085] If the geological evaluation index of the target area is greater than the threshold value of the geological evaluation index of the target area, it means that the larger the geological evaluation index of the target area, the more unstable the geological situation of the target area is, then it is determined that the geological state of the target area tends to be unstable;

[0086] It should be explained that the acquisition method of the threshold value of the geological evaluation index of the target area is the same as the acquisition method of the geological evaluation index of the target area, and its value is set by relevant personnel in the field.

[0087] As a preferred embodiment of the present invention, step S30 specifically includes the following steps:

[0088] Step S31: Obtain the interlayer hydraulic pressure of the target area and generate the interlayer hydraulic pressure influence coefficient of the target area;

[0089] Among them, the generation method of the interlayer hydraulic pressure influence coefficient of the target area is specifically as follows:

[0090] Obtain the interlayer hydraulic pressure of the target area, perform a difference processing on the interlayer hydraulic pressure of the target area and the threshold value of the interlayer hydraulic pressure of the target area to generate a pressure difference;

[0091] Perform a ratio processing on the pressure difference and the threshold value of the interlayer hydraulic pressure of the target area to generate the interlayer hydraulic pressure influence coefficient of the target area;

[0092] It should be explained that the threshold value of the interlayer hydraulic pressure of the target area refers to the maximum value of the interlayer hydraulic pressure in the coal mine that does not exceed the compressive strength of the coal seam and the bearing capacity of the rock stratum; in addition, when the hydraulic pressure exceeds 60%-70% of the compressive strength of the coal seam, it may cause mine safety problems;

[0093] Step S32: Obtain the interlayer temperature of the target area and generate an interlayer temperature influence coefficient for the target area;

[0094] Among them, the generation method of the interlayer temperature influence coefficient of the target area is specifically as follows:

[0095] Obtain the interlayer temperature of the target area, perform a ratio process on the interlayer temperature of the target area and the temperature threshold to generate a temperature difference; the temperature threshold refers to the lowest value at which the interlayer temperature causes an explosion of explosive gas in the interlayer;

[0096] Perform a ratio process on the temperature difference and the temperature threshold to generate an interlayer temperature influence coefficient for the target area;

[0097] Step S33: Establish a geological environment impact assessment model, substitute the interlayer hydraulic pressure influence coefficient of the target area and the interlayer temperature influence coefficient of the target area into the geological environment impact assessment model to generate a geological environment assessment index;

[0098] Among them, the expression of the geological environment impact assessment model is:

[0099] Hk = Fc * α + Tc * (1 - St) * β;

[0100] In the expression, Hk represents the geological environment assessment index, Fc represents the interlayer hydraulic pressure influence coefficient of the target area, Tc represents the interlayer temperature influence coefficient of the target area, and St represents the expected heat dissipation efficiency of the heat dissipation means during the mining of the target area.

[0101] As a preferred embodiment of the present invention, the generation method of the stability assessment index of the coal seam roof and floor of the target area is specifically as follows:

[0102] Perform a ratio process on the geological environment assessment index and the geological evaluation index to generate a stability assessment index of the coal seam roof and floor of the target area;

[0103] Exemplarily, through the formula Generate a stability assessment index Wp of the coal seam roof and floor of the target area;

[0104] In the formula, Wp represents the stability assessment index of the coal seam roof and floor of the target area, Pr represents the geological evaluation index, and Hk represents the geological environment assessment index.

[0105] As a preferred embodiment of the present invention, the judgment method of step S50 is specifically as follows:

[0106] Compare the stability evaluation index of the coal seam roof and floor in the target area with the threshold value of the stability evaluation index of the coal seam roof and floor in the target area; the threshold value of the stability evaluation index of the coal seam roof and floor in the target area refers to the maximum value of the dynamic zoning standard in the target area.

[0107] If the stability evaluation index of the coal seam roof and floor in the target area is less than or equal to the threshold value of the stability evaluation index of the coal seam roof and floor in the target area, it means that the smaller the stability evaluation index of the coal seam roof and floor in the target area, the better the stability of the coal seam roof and floor in the target area, and the more compliant the dynamic zoning of the coal seam roof and floor is.

[0108] If the stability evaluation index of the coal seam roof and floor in the target area is greater than the threshold value of the stability evaluation index of the coal seam roof and floor in the target area, it means that the larger the stability evaluation index of the coal seam roof and floor in the target area, the worse the stability of the coal seam roof and floor in the target area, and the less compliant the dynamic zoning of the coal seam roof and floor is.

[0109] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for evaluating the dynamic zoning of coal seam roof and floor based on multiple geological factors, characterized in that: The following steps are involved: Obtain geological data of the target area and generate a geological evaluation index for the target area; geological data include coal seam inclination angle, coal seam thickness, and crack length of the top and bottom plates of the coal seam; crack length refers to the average length of all cracks; According to the geological evaluation index of the target area, determine whether the geological conditions of the target area are stable; Obtain geological environment data of the target area and generate geological environment assessment index; geological environment data include interlayer hydraulic pressure and interlayer temperature; Generate the stability assessment index of the coal seam roof and floor in the target area according to the geological environment assessment index and the geological evaluation index; Based on the stability assessment index of the coal seam roof and floor in the target area, it is determined whether the dynamic zoning of the coal seam roof and floor meets the requirements.

2. The method for evaluating the dynamic zoning of coal seam roof and floor based on multiple geological factors according to claim 1 is characterized in that: The step of obtaining geological data of the target area and generating a geological evaluation index of the target area specifically includes the following steps: Obtain the coal seam inclination angle in the target area and generate the coal seam inclination angle evaluation coefficient; Obtain the coal seam thickness in the target area and generate the coal seam thickness evaluation coefficient; Obtain the crack length of the top and bottom plates of the coal seam and generate a crack length evaluation coefficient; The geological evaluation index of the target area is generated according to the coal seam inclination angle evaluation coefficient, coal seam thickness evaluation coefficient and fracture length evaluation coefficient.

3. The method for evaluating the dynamic zoning of coal seam roof and floor based on multiple geological factors according to claim 2 is characterized in that: The coal seam inclination angle evaluation coefficient is generated in the following manner: Obtaining the coal seam inclination angle of the target area, performing difference processing between the coal seam inclination angle of the target area and the inclination angle threshold, and generating an inclination angle difference; The inclination angle difference is processed by ratio with the inclination angle threshold to generate the coal seam inclination angle evaluation coefficient; The coal seam thickness evaluation coefficient is generated in the following manner: Obtain the coal seam thickness of the target area, perform difference processing between the coal seam thickness of the target area and the thickness threshold, and generate a thickness difference; The thickness difference is processed by ratio with the thickness threshold to generate the coal seam thickness evaluation coefficient; The crack length evaluation coefficient is generated in the following manner: Obtain the length of the cracks in the top and bottom plates of the coal seam, perform difference processing on the length of the cracks in the top and bottom plates of the coal seam and the length threshold to generate the length difference; the length threshold refers to the average value of the length and width of the rock; The method for generating the geological evaluation index of the target area is specifically as follows: Generate the geological evaluation index Pr of the target area through the formula Pr=Rq*a1+Hm*a2+Lf*a3; In the formula, Rq represents the evaluation coefficient of coal seam inclination angle, Hm represents the evaluation coefficient of coal seam thickness, Lf represents the evaluation coefficient of crack length, and a1, a2, and a3 are all weight coefficients.

4. The method for evaluating the dynamic zoning of coal seam roof and floor based on multiple geological factors according to claim 2 is characterized in that: The method of judging whether the geological conditions of the target area are stable according to the geological evaluation index of the target area is as follows: comparing the geological evaluation index of the target area with a geological evaluation index threshold of the target area; If the geological evaluation index of the target area is less than or equal to the geological evaluation index threshold of the target area, it means that the smaller the geological evaluation index of the target area is, the more stable the geological conditions of the target area are, and it is determined that the geological conditions of the target area are stable; If the geological evaluation index of the target area is greater than the geological evaluation index threshold of the target area, it means that the larger the geological evaluation index of the target area is, the more unstable the geological conditions of the target area are, and it is determined that the geological state of the target area is unstable.

5. The method for evaluating the dynamic zoning of coal seam roof and floor based on multiple geological factors according to claim 1 is characterized in that: The step of obtaining the geological environment data of the target area and generating the geological environment assessment index specifically includes the following steps: Obtain the interlayer hydraulic pressure of the target area and generate the interlayer hydraulic pressure influence coefficient of the target area; Obtain the interlayer temperature of the target area and generate the interlayer temperature influence coefficient of the target area; A geological environment impact assessment model is established, and the interlayer hydraulic pressure influence coefficient and the interlayer temperature influence coefficient of the target area are substituted into the geological environment impact assessment model to generate a geological environment assessment index.

6. A method for evaluating the dynamic zoning of coal seam roof and floor based on multiple geological factors according to claim 5, characterized in that: The generation method of the interlayer hydraulic pressure influence coefficient of the target area is specifically as follows: Obtaining the interlayer hydraulic pressure of the target area, performing difference processing on the interlayer hydraulic pressure of the target area and the interlayer hydraulic pressure threshold of the target area to generate a pressure difference; The pressure difference is processed by ratioing the interlayer hydraulic pressure threshold of the target area to generate the interlayer hydraulic pressure influence coefficient of the target area; The interlayer temperature influence coefficient of the target area is generated in the following manner: The interlayer temperature of the target area is obtained, and the interlayer temperature of the target area is compared with the temperature threshold to generate a temperature difference; the temperature threshold refers to the minimum value of the interlayer temperature that causes the explosive gas in the interlayer to explode; The temperature difference is ratioed with the temperature threshold to generate the interlayer temperature influence coefficient of the target area.

7. The method for evaluating the dynamic zoning of coal seam roof and floor based on multiple geological factors according to claim 5 is characterized in that: The expression of the geological environment impact assessment model is: Hk=Fc*α+Tc*(1-St)*β; In the expression, Hk represents the geological environment assessment index, Fc represents the interlayer hydraulic pressure influence coefficient of the target area, Tc represents the interlayer temperature influence coefficient of the target area, and St represents the expected heat dissipation efficiency of the heat dissipation means during mining in the target area.

8. The method for evaluating the dynamic zoning of coal seam roof and floor based on multiple geological factors according to claim 1 is characterized in that: The method for generating the stability evaluation index of the coal seam roof and floor in the target area is specifically as follows: By formula Generate the stability evaluation index Wp of the coal seam roof and floor in the target area; In the formula, Wp represents the stability assessment index of the coal seam roof and floor in the target area, Pr represents the geological evaluation index, and Hk represents the geological environment assessment index.

9. A method for evaluating the dynamic zoning of coal seam roof and floor based on multiple geological factors according to claim 8, characterized in that: The stability evaluation index of the coal seam roof and floor in the target area is used to determine whether the power partition of the coal seam roof and floor meets the requirements. The specific determination method is as follows: The stability assessment index of the coal seam roof and floor of the target area is compared with the stability assessment index threshold of the coal seam roof and floor of the target area; the stability assessment index threshold of the coal seam roof and floor of the target area refers to the highest value of the power zoning standard of the target area; If the stability evaluation index of the coal seam roof and floor in the target area is less than or equal to the stability evaluation index threshold of the coal seam roof and floor in the target area, it means that the smaller the stability evaluation index of the coal seam roof and floor in the target area, the better the stability of the coal seam roof and floor in the target area, and the more the dynamic zoning of the coal seam roof and floor meets the requirements; If the stability assessment index of the coal seam roof and floor in the target area is greater than the stability assessment index threshold of the coal seam roof and floor in the target area, it means that the greater the stability assessment index of the coal seam roof and floor in the target area, the worse the stability of the coal seam roof and floor in the target area, and the less the dynamic zoning of the coal seam roof and floor meets the requirements.

Images