In order to study the failure mechanism,inducing factors,and treatment plan of the fill sub-grade in coal-bearing strata,taking the landslide disease of a section of the coal-bearing strata fill sub-grade in the Helan-Lijiang Expressway as the background,the stability and main control factors under different failure modes were calculated and analyzed through researching the experimental results.The results show that there is a significant difference in shear resistance indicators between natural and saturated states of coal-bearing strata.There is a free-standing slope with a down-dip angle,and the slope is prone to creeping instability along weak coal seams,while the slope of coal-bearing strata is prone to weathered layer circular sliding and deep interlayer sliding.Based on this,effective treat-ment measures for the fill subgrade slope in coal-bearing strata are proposed.
维普
万方数据