Study on optimizing grouting area base on tectonic stress method
YIN Shixian
ZHANG Gendong
LI Dehai
Abstract：In order to reduce grouting amount of floor water disasters and improve economic benefits, regional tectonic stress to optimize grouting area method is proposed.Previous excessive grouting or grouting insufficient methods cannot meet the purpose of the prevention and control of water disasters.Using the differential geometry knowledge and the discretization method, the tectonic stress of water-resisting layer and the tensile stress were calculated.Under condition of experiment measure of unidirectional water pressure, ultimate tensile strength of water proof rock stratum, a certain safety coefficient is gotten, as a designated area of the grouting standard.The calculated tensile stress of the structure is larger than that of the value, and need to be injected and vice versa.Compared with project of Longwangzhuang coal mine 1114 working face and 1111 working face, engineering quantity fell by 70.8% and the economic benefit increased by 71%.This method has a certain engineering significance.
Keywords：tectonic stressmain curvaturetensile strengthgrouting
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 753-758 )