Sentence examples for strata pressure from inspiring English sources
According to the stress burial depth conversion formula 0.02262 MPa = l m (Gluyas and Cade 1999), the strata pressure at 1600 m is approximately 36.16 MPa.
The effect of strata pressure, hydraulic pressure and waterproof-resistant slab thickness of surrounding rock on water inrush disaster is studied.
The main factors which control water inrushes include strata pressure, mining size, geologic structures and the water pressure in the underlying aquifer.
Model test results show that minimum safety thickness increases with the increase of strata pressure and decreases with the increase of hydraulic pressure.
(2) Five stages, including dewatering, pressure hold, pressure control, high and stable yield, and depletion stages, are classified based on the in situ pressure change characteristics, such as bottom-hole flowing pressure, desorption pressure, and strata pressure (Qin et al. 2011; Li et al. 2011).
Coal seam adsorption principles and actual coal sample simulation experiment results show that in the course of strata uplift, pressure drops and desorption occurs in coal measure strata, resulting in the discharge of substantial free gas.
This part of the strata can be called "deformation pressure strata" (Yan 2009).
The relationships between initial vital signs and in-hospital mortality were shown by odds ratio of different strata of vital signs, including 10 mmHg strata for systolic blood pressure, 1°C strata for body temperature, 10 beats per minute strata for heart rate, and 4 per minute strata for respiratory rate.
At the same time, the free gases formerly stored in the pores of coal measure source rocks were also discharged at a large scale due to volumetric expansion resulting from strata uplift and pressure drop.
To better study the gas accumulation process of coal measure tight sand formations in the uplift period, an experiment was conducted to simulate gas migration and accumulation under strata uplift and pressure drop settings.
High-temperature and high-salinity inclusions and the physical simulation experiment results obtained under nearly real geological conditions all confirm that large scale gas accumulation can occur in the uplift period of coal measure strata due to pressure drop, desorption, and gas expansion.
