doi:10.16186/j.cnki.1673-9787.2020.6.4

Received:2020/01/11

Revised:2020/03/10

Published:2020/11/15

Prediction of water inflow with mining across ditches in loess ridge area based on runoff-confluence-seepage water filling mode

LI Tao1,2,3, GAO Ying1, GUO Liangliang4, FENG Hai5

1.School of Mining & Civil Engineering， Liupanshui Normal University， Liupanshui 553004 ， Guizhou， China；2.Key Laboratory of Mine Geological Hazards Mechanism and Control，Xi’an  710065 ， Shaanxi， China；3.College of Geology and Environment，Xi’an University of Science and Technology ，Xi ’an  710065 ， Shaanxi， China；4.Shaanxi 185 Coalfield Geology Co. ， Ltd. ， Yulin  719000 ， Shaanxi， China；5.Shaanxi Coal and Chemical Technology Institute，Xi’an  710065 ， Shaanxi， China

Abstract:In order to ensure the safety of shallow coal seam mining across ditches in loess ridge area， the prediction of water inflow of the working face with mining across ditches in loess ridge area was studied. The characteristics of the ditches in the study area were identified by field geological survey， and the flood filling model of the coal mining across ditches in the study area was analyzed. Based on the hydraulic theory， the formula for calculating the inflow of water into the working face in loess ridge area was deduced， and the formula was engineering tested. The results showed that the process of ditches flood entering the coal mining face in the loess ridge area included runoff generation， confluence and seepage. Based on the runoff-confluence-seepage water filling mode， the formulas of calculating the normal and maximum water inflow with mining across ditches were proposed， which could predict water inflow accurately with an error of only 3.2%. According to the formula， the corresponding water control measures were proposed. It provided a reference for similar geological mining conditions with mining across ditches.

Key words:loess ridge area;coal mining;water inflow;mining across ditch;runoff-confluence-seepage water filling mode

基于产流_汇流_渗流充水模式的黄土梁峁区过沟开采涌水量预测_李涛.pdf