Numerical Simulation Study on Reinforcing Parameters of Ground Grouting in Mending Shaft Lining Rupture
(0) Based on the engineering background of Xuehu main shaft in Henna Shenhuo Group Co., Ltd, by the numerical simulation method, the paper analyzes systematically shaft lining stress states and deforming data under different reinforcing parameters(reinforcing distance, reinforcing width, cement grouting material) of ground grouting, and the general effect on mending shaft lining rupture. The results of numerical simulation show that the stress magnitude of shaft lining has direct relations with parameters which are used in grout reinforcing stratum. As the reinforced distance outside shaft lining is twice as much as shaft radius and the reinforced width is four times as much as shaft radius, the effect on mending shaft lining rupture is most remarkably in all reinforcing schemes. Compared with no grouting, the maximum vertical stress of shaft lining can decrease 42.1 percent on the interface between innermost aquifer and bedrock. As the reinforced distance and width are constant, the maximum vertical stress will reduce with cement grouting parameters (Youngs modulus, internal friction angle, cohesive strength) increasing, but they have not obvious effect on mending shaft lining rupture. The effects on stress magnitude of shaft lining about cement grouting parameters are also provided in the paper.
shaft lining rupture ground grouting reinforcing parameter numerical simulation shaft lining stress
LIU Xiliang ZHANG Zhengfeng REN Lianwei DUN Zhilin
School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, China Education Training Center, Jiaozuo Coal (group) Co. Ltd, Jiaozuo 454100, China School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, China;Research Institute
国际会议
The 2007 International Symposium on Safety Science and Technology(2007采矿科学与安全技术国际学术会议)
河南焦作
英文
506-512
2007-04-17（万方平台首次上网日期，不代表论文的发表时间）