Base on the in-situ measurements in soft rocks influence of the wall subsiding on roadwayfloor heave is explained.

This paper delt with the relationship between the floor heave and the gob height and horizontal tectonics stress in panel No.

Bolt-grouting support technique controlling floor heave of extremely soft rock roadway;

Research and practices on floor heave deformation mechanism and support of high stress soft rock roadway in Dayan No.2 Mine;

To identify the mechanical properties of stabilized slaking mudstone and possibility as base material of roadway floor,a series of experiments were carried out on specimens prepared at different dosages of solidifying-agent and cu.

This paper deals with the relationship between the floor heave and the gob height and horizontal tectonic stress in panel No.

In this paper,three boundary element models were adopted to simulate the preventive effect of different floor bolt layout on the floor heave.

Floor heave is familiar distortion and damage form in deep soft rock roadway, how to control floor heave effectively and economically is an urgent problem.

Based on the field investigation,model tests and numerical simulation,the features and mechanism of four kinds of floor heave of roadway in deep coal mining are discussed,the major factors affecting the floor heave are analyzed,and recent advance .

Option of Reasonable Horizon of Floor Roadway in Jianxin Colliery

we numerically simulated the rules of floor roadway stress,displacement,development of plastic zone,and rock displacements around floor of roadway at different positions of coal face under moveable supporting pressure.