Coal seam roof water inrush risk assessment method

A technology of coal seam roof and evaluation method, applied in the direction of instruments, data processing applications, resources, etc., can solve problems such as inability to quantitatively evaluate, and achieve the effect of ensuring coal mine design and safe production

Inactive Publication Date: 2019-02-22
中国煤炭地质总局水文地质局
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Problems solved by technology

[0003] At present, the main methods of coal seam roof risk assessment include "three-map double-prediction method" and "maximum height of water-conducting fracture zone", etc. The main factor for evaluation is water abundance (water inflow per unit of drilling, L / (m s)), Only qualitative evaluation, not quantitative evaluation

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  • Coal seam roof water inrush risk assessment method
  • Coal seam roof water inrush risk assessment method
  • Coal seam roof water inrush risk assessment method

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Embodiment Construction

[0050] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0051] The coal seam roof water inrush risk assessment method of the present invention comprises the following steps: step 1, setting at least one risk assessment domain, and obtaining the characteristic parameters of the water-filled aquifer; step 2, establishing a static water inrush distribution model per unit area , water-filled aquifer floor elevation distribution model, water-conducting fracture zone height elevation distribution model, coal seam roof elevation distribution model, and water-filled intensity distribution model to generate other water-filled channel distribution models; step 3, establish a conduction model, use the conduction The model, the unit static water inflow distribution model and the wate...

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Abstract

The invention relates to a coal seam roof water inrush risk assessment method, comprising the following steps: setting at least one risk assessment domain, obtaining characteristic parameters of coalseam and water-filled aquifer; establishing the static inrush water distribution model, water-filled aquifer floor elevation distribution model, water conduction fracture zone elevation distribution model, coal seam roof elevation distribution model and water-filled intensity distribution model. The conduction model is established, and the spatial analysis is carried out by using the conduction model, the unit static inrush water distribution model and the water filling intensity distribution model, and the hazard evaluation model of the evaluation domain is established; Hazard zoning evaluation is performed on the zoning units in the hazard evaluation model. The present invention provides a feasible technical scheme for quantitative evaluation of roof hazard of coal mine, evaluates coal seams by hazard zoning, integrates evaluation results, intuitively reflects hazard grades in coal seam evaluation domain, and provides data support for coal mine design and safety production.

Description

technical field [0001] The invention relates to the technical field of mine hydrogeology, in particular to a method for evaluating the risk of water inrush from a coal seam roof. Background technique [0002] The problem of coal seam roof water damage is one of the main water hazards that plague the safe production of coal mines and the sustainable development of the coal industry in China. Especially with the gradual increase of mining depth and the recovery of lower coal, the roof cracks communicate with the overlying water body, resulting in roof surge ( There are more and more examples of water disasters occurring or deteriorating the production environment of the working face. [0003] At present, the main methods of coal seam roof risk assessment include "three-map double-prediction method" and "maximum height of water-conducting fracture zone", etc. The main factor for evaluation is water abundance (water inflow per unit of drilling, L / (m s)), Only qualitative evalua...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/0635G06Q50/02
Inventor 方向清
Owner 中国煤炭地质总局水文地质局
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