Unlock instant, AI-driven research and patent intelligence for your innovation.

Coupling predication method of outburst risk multivariate information of gas coal and gas

A gas outburst, multi-information technology, applied in earthwork drilling, drilling equipment, mining equipment, etc., can solve problems such as failure to achieve coupled prediction, coal and gas outburst accidents, and obstacles to safe production in coal mines

Active Publication Date: 2013-04-03
CHINA UNIV OF MINING & TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex geological conditions of coal mines, these indicators cannot fully reflect the risk of coal and gas outburst, and these indicators have not realized the coupling prediction in the true sense
Therefore, the danger of coal and gas outburst cannot be accurately predicted, and low-indicator coal and gas outburst accidents often occur, which poses a huge obstacle to the safe production of coal mines

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Coupling predication method of outburst risk multivariate information of gas coal and gas
  • Coupling predication method of outburst risk multivariate information of gas coal and gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The present invention is further described below:

[0014] As shown in Figure 1, the multi-information coupling prediction method of gas briquette and gas outburst risk of the present invention first needs to test the coal seam gas pressure in the mining area multiple times, and determine the maximum value measured as the original gas pressure P of the coal seam; at the same time Take coal samples in the mining area and test the critical fracture pressure of the coal samples. From the roadway mining face 1 to the front coal body 2, construct a borehole 6 with a length of not less than 10m, measure the gas desorption index of cuttings or other indicators that can reflect the change of gas pressure or content every 1m of drilling, and record the gas at 1m respectively Desorption index K 1 , Desorption index K at 2m 2 , Desorption index K at 3m 3 , ... until the desorption index tends to be stable. During the test, when the gas desorption index does not change much, it ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a coupling predication method of outburst risk multivariate information of gas coal and gas. In the method, a multi-index coupling predicting model is built for predicting the outburst risks of coal and gas by coupling original gas pressure of a coal layer, critical fracture gas pressure of a coal sample, mining influences and cutting gas desorption index and the like; the outburst risk information of coal and gas can be captured and collected fully; the multivariate information coupling prediction overcomes the shortages that the single-index information collection is incomplete and cause accurate prediction; and by the method disclosed in the invention, the accuracy for predicting the outburst risks of coal and gas is improved.

Description

technical field [0001] The invention relates to a method for predicting the risk of gas outburst, in particular to a multi-information coupling prediction method for gas briquette and gas outburst risk which is suitable for coal mining face. Background technique [0002] Coal and gas outburst disasters are one of the main disasters that cause mass deaths and injuries in mines. Accurate prediction of coal and gas outburst hazard performance can effectively prevent accidents from happening. However, the current coal and gas outburst risk prediction methods are mainly single-index methods, such as the use of cuttings amount S value, cuttings gas desorption index K 1 value, Δh 2 , the initial velocity q value of drilling gas gushing out, etc., or summarize these indicators into empirical formulas for prediction. Due to the complex geological conditions of coal mines, these indicators cannot fully reflect the risk of coal and gas outburst, and these indicators have not realized...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/18E21F17/18
Inventor 林柏泉杨威翟成
Owner CHINA UNIV OF MINING & TECH