煤炭工程 ›› 2019, Vol. 51 ›› Issue (12): 48-52.doi: 10.11799/ce201912010

• 设计技术 • 上一篇    下一篇

倾斜煤层穿层测压钻孔设计参数计算方法研究#br#
#br#

马文伟   

  1. 煤科集团沈阳研究院有限公司
  • 收稿日期:2019-01-07 修回日期:2019-04-28 出版日期:2019-12-20 发布日期:2020-05-11
  • 通讯作者: 马文伟 E-mail:120598723@qq.com

Study on Designed Parameters Calculation Method of Borehole Drilling for Gas Pressure in Inclined Coal Seam

  • Received:2019-01-07 Revised:2019-04-28 Online:2019-12-20 Published:2020-05-11

摘要: 为了准确测定煤层瓦斯压力,快速高效的设计穿层测压钻孔,以测压钻场与煤层的两种相对位置关系为基础,建立穿层测压钻孔参数计算几何模型,根据模型中钻场、钻孔、煤层之间的空间关系,得出上向穿层钻孔与下向穿层钻孔相关参数的计算公式,利用Mathematic数学软件进行算例分析,取得钻孔设计合适的参数空间,根据计算模型设计煤矿现场测压钻孔并施工,其理论计算长度与实际钻孔长度误差在10%左右,验证了计算公式的适用性和准确性。

关键词: 瓦斯安全, 瓦斯压力, 钻孔参数, 数学模型, 钻孔施工

Abstract: In order to measure gas pressure accurately in coal seam and designed borehole parameters quickly and efficiently, established a geometric model for calculating borehole parameters based on the two relative positions between piezometric drilling site and coal seam. According to the spatial relationship among drilling field, drilling hole and coal seam in the model, the formulas for calculating related parameters of upward drilling hole and downward drilling hole are obtained. A numerical example is analyzed by using mathematical software, and the appropriate parameter space for drilling design is obtained. Using the calculation model to designed and constructed the pressure measurement boreholes, it can be find that the error between theoretical calculation length and actual drilling length is less than 10%, which verifies the applicability and accuracy of the calculation formula.

中图分类号: