采矿与安全工程学报2017，Vol.34Issue(1)：32-38,7.DOI:10.13545/j.cnki.jmse.2017.01.005
巷道底板锚固孔钻进泵吸反循环排渣数值试验
Study on pump suction reverse circulation deslagging in drilling roadway floor anchoring boreholes through numerical experiments
摘要
Abstract
Based on pump suction reverse circulation principle of circulating medium (water),double walls drilling pipe model was built for deslagging in the floor anchoring borehole,studies on deslagging process in double walls pipes with various cross section sizes were conducted through numerical ex-periments with fluid analysis software FLUENT,and the optimal double walls pipe cross section sizes are selected with deslagging efficiency as the indicator.A detailed variance analysis about various fac-tors influencing deslagging efficiency of double walls drilling pipe found,that with the increase of water flow in circulating medium inlet,deslagging efficiency improves continuously;within a certain range,pressure in outlet for mixture of water and dregs and depth of holing do not have an obvious effect on deslagging efficiency;the optimal working condition of deslagging system is 21/s of water flow in cir-culating medium inlet and-90 kPa of pressure in outlet.Industrial field tests on deslagging in drilling floor anchoring boreholes have made some achievements,which indicates that numerical simulation can help optimize structure sizes of double walls drilling pipe and has certain reference value for field drill-ing work.关键词
底板锚固孔/双壁钻杆/泵吸反循环/钻进排渣/排渣效率影响因素Key words
floor anchoring borehole/double walls drilling pipe/pump suction reverse circulation/deslagging/influence factors of deslagging efficiency分类
矿业与冶金引用本文复制引用
冯友良,鞠文君,焦建康,张世伟..巷道底板锚固孔钻进泵吸反循环排渣数值试验[J].采矿与安全工程学报,2017,34(1):32-38,7.基金项目
国家科技支撑计划项目(2012BAB13B02) （2012BAB13B02）
国家自然科学基金煤炭联合基金重点项目(U1261211) （U1261211）
