Designed Parameters Calculation Method of Borehole Drilling Through Inclined Seam for Gas Pressure Measuring
SANG Cong
PAN Duo-wei
LI Wei
GUO Jian-hang
Abstract：In order to accurately determine the parameters of the pressure measuring borehole drilling through seam,based on No.15 seam gateway and the high level gas drainage gateway in Hongyuan Mine as a prototype,the geometrical model of the pressure measuring bore-hole drilling through the seam was established. According to a space layer relationship between the pressure measuring borehole drilling through the seam and the inclined seam in the model,the paper discussed a false inclination affected to the calculation of the borehole length and a geometrical formula to calculate the borehole length and the rock borehole length was obtained. Based on an Excelldata pro-cessing software,a program to calculate the length of the pressure measuring borehole drilling through the seam was compiled and written. The program found that the error between the theoretical length and the actual length was less than 1 m.The accuracy of the calculation for-mula was verified and the application of the calculation formula could improve the design efficiency and the site construction accuracy.
Keywords：high level gas drainage gatewaydownward drillingfalse inclinationparameters of borehole
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 71-74 )