Slurry Shield TBM Face Pressure Calculator

Hydro-Shield Tunneling: Calculate required air bubble plenum pressure, excess slurry pressure, bentonite penetration depth, and filter cake sealing stability.

Slurry & Soil Mechanics

Hydrostatic Head $H_w$ (m):

Effective Grain Size $d_{10}$ (mm):

Effective Grain Size $d_{50}$ (mm):

Slurry Yield Stress $\tau_f$ (Pa):

Slurry Density $\rho_s$ ($\text{g/cm}^3$):

Effective Earth Pressure $\sigma'_h$ (kPa):

Safety Overpressure Buffer $\Delta p_{safe}$ (bar):

Face Support & Infiltration Results

Air Cushion Pressure

-- bar

Excess Pressure ($\Delta p$)

-- bar

Penetration Depth ($e_p$)

-- cm

Filter Cake Sealing

Hydraulic & Rheological Diagnostics

• Hydrostatic Groundwater Pressure ($u_w$): -- bar

• Effective Pressure Transfer Ratio: -- %

• Stagnation Pressure Gradient: -- kPa/m

• Equivalent Pore Diameter ($d_{10}/5$): -- mm

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Slurry Shield TBM Face Pressure Calculator

Slurry & Soil Mechanics

Face Support & Infiltration Results

Hydraulic & Rheological Diagnostics

Frequently Asked Questions