Deformation Monitoring and Stability Analysis of Shaft Lining in Weakly Cemented Stratum

Table 1

Structural composition of the weakly cemented stratum in Xieqiao mining area.

Stratum	Depth (m)	Stratigraphic distribution	Parameters	Lithology
1^st aquifer	26		q = 0.021∼0.603 L/s·m	Medium fine powder
1^st aquiclude	25		IP = 17∼22	Sandy clay
2^nd aquifer	65		q = 0.199∼2.73 L/s·m	Medium fine sand
3^rd aquifer	175		k = 3.22∼12.14 m/d	Medium coarse sand
2^nd aquiclude	70		IP = 18∼29	Clay
3^rd aquiclude	40		IP = 20∼30	Clay
4^th aquifer	50		q = 0.524∼1.935 L/s·m	Medium coarse sand
4^th aquiclude	20		—	Cemented clay

q is the unit water inflow, K is the permeability coefficient, and I_P is the plasticity index.