Analysis of the response subsidence and grouting treatment in the goaf of multi-layer inclined coal seam

Based on existing researches, field drillings and numerical simulations are carried out in this paper to analyze the problems of subsidence control in the goaf of multi-layer inclined coal seam. Midas/GTS NX is used to build a three-dimensional calculation model of the goaf. A new method of using bo...

Full description

Saved in:

Bibliographic Details
Published in:	Scientific reports 2023-11, Vol.13 (1), p.20711-20711, Article 20711
Main Authors:	Gao, Xuhe, Tian, Weiping, Pang, Qinggang, Li, Jiachun, Qi, Hongliang, Xu, Bin, Zhang, Zhipei
Format:	Article
Language:	eng
Subjects:	Civil engineering Coal Coal mining Deformation Drilling Geology Load Methods Roads & highways Simulation Software Stone Subsidence
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	Based on existing researches, field drillings and numerical simulations are carried out in this paper to analyze the problems of subsidence control in the goaf of multi-layer inclined coal seam. Midas/GTS NX is used to build a three-dimensional calculation model of the goaf. A new method of using borehole data to check simulation parameters is proposed. The whole process of goaf excavation, construction of roadbed (pile foundation) and grouting treatment is analyzed. Analysis theory of different subgrade construction schemes and grouting treatment process on goaf is established. Response characteristics of displacement and equivalent stress and strain of goaf in multilayer inclined coal seam are obtained. A new method for analyzing the characteristics of the stress and deformation of the rock strata before and after grouting in the goaf under the conditions of different foundation schemes on the surface is provided in this research.
ISSN:	2045-2322 2045-2322