The pressure control of soft-rock and roadway support has been one of the challenges of underground mines. Soft-rock support is very difficult in many places in China and is becoming a kind of main influencing factors in the development and economic of mining community. Numerical simulation research on the deformation mechanism of soft-rock tunnel contributes to the development of soft-rock support theory. The numerical calculation model of shallow buried soft-rock is based on Hongya coalmine; ANSYS is used to analysis the deformation law inward to find out how to control the soft-rock deformation. Hence we can know the main influence in the shallow soft-rock tunnel stability. The results are of great importance to the mines that have similar geological conditions.
Mining is a large-scale and highly complex misalignment system. The progressive damage and disorder development of the rock mass distort as well as the development that the rock mass evolution curve changes from the linear constant speed stage to the distortion stage which is accelerated by misalignment threaten the safety production in mines seriously. Therefore, the research on the rock mass distortion destroys plays an important part in guaranteeing the safety production in mines. This article elaborates the non-linear dynamics branch theory in detail, analyzes the branch phenomenon in slow change and stress-strain of rock mass according to its characteristics and advances the research procedure of the non-linear dynamics branch theory in mining. Moreover, it establishes the dynamic model according to the physical property of system and determines the stability of system using the branch theory.
According to the actual monitoring data of mining environment and rock burst happening on the 3511 fully-mechanized workface in Anyuan coal mine, the research of the rock burst on the workface and its surrounding rock of gob-side entry is done and the reasonable supporting scheme is determined. The research results are of great guiding importance to the coal mining that has similar condition, provide scientific basis for the control technology of rock burst on the workface and its gob-side entry as well as the reasonable identification of support parameters on the gob-side tunnel, and supply technology protection in order to accelerate the advancing speed of workface. Finally it can produce larger economic benefit.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.