Continuous drilling flowrate process capable of predicting coal draft outburst and its apparatus

A technology of coal roadway outburst and flow method, applied in mining equipment, safety equipment, earthwork drilling and mining, etc., can solve the problems of not directly measuring the gas flow distribution in the continuous drilling process, unable to reflect the distribution of pressure relief zone, and worker panic
CN1847620AInactive Publication Date: 2006-10-18CHINA UNIV OF MINING & TECH
0 Cites 24 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA UNIV OF MINING & TECH
Publication Date
2006-10-18
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The present invention is continuous drilling flow rate capable of predicting coal draft outburst and its apparatus. By means of the method of drilling holes in the coal bed drilling direction for data acquisition and the apparatus comprising hole sealing capsule unit, solid-gas separator, filter, coal bit controller, electric rock drill with connected displacement sensor LXC, controller unit KZ with explosion resistant enclosure and connected computer data acquisitor SC, the present invention can determine the gas distribution in the drilling direction, obtain the gas flow rate distribution curve along the drilling depth during coal bed drilling process, so as to determine the distance of soft coal containing high pressure gas to the ground, judge the distance to the place with maybe outburst. The present invention has compact reasonable structure, high accuracy and stable and reliable measurement result, and may be used widely.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a continuous drilling flow rate method and a device thereof for predicting coal roadway outburst, and is especially suitable for measuring the risk of coal roadway outburst. Background technique

[0002] As we all know, coal and gas outburst is a dynamic phenomenon that occurs in soft coal containing high-pressure gas. Once outburst occurs, it often endangers the lives of coal miners. Coal roadway excavation is a labor process carried out in soft coal seams, and coal and gas outbursts are often encountered. It is very important to predict coal roadway outbursts to avoid outburst hazards. At present, the coal roadway outburst prediction methods commonly used in the underground are: 1) the initial velocity method of drilling gas emission; 2) the R value index method; 3) the cuttings index method. The characteristic of these methods is to measure the index of a certain point in front of the coal ...

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