Measurement system and method for stress of surrounding rock of hipparion red soil tunnel under influence of crack water

Abstract

The invention discloses a measurement system and method for the stress of the surrounding rock of a hipparion red soil tunnel under the influence of crack water. The measurement system for the stress of the surrounding rock of the hipparion red soil tunnel under the influence of the crack water comprises a signal amplifier, a data collector, an upper computer, a power supply and eight sensor groups; the sensor groups are connected with the data collector by the signal amplifier, and the data collector is connected with the upper computer; the eight sensor groups are respectively installed at the arch crown of the monitoring section of a hipparion red soil tunnel, both sides of the arch waist of the monitoring section of the hipparion red soil tunnel, both sides of the side wall of the monitoring section of the hipparion red soil tunnel, both sides of the arch foot of the monitoring section of the hipparion red soil tunnel and the position of the inverted arch of the monitoring section of the hipparion red soil tunnel; and the data of soil pressure and water pressure are collected in real time by the sensor groups, the collected data are transmitted to the data collector by the signal amplifier, the data are collected by the data collector according to a certain frequency and are also transmitted to the upper computer, and the received data are processed by the upper computer. According to the measurement system and the method for the stress of the surrounding rock of the hipparion red soil tunnel under the influence of the crack water, the influence degree of the pressure of pore water to the total stress of the surrounding rock in the construction process of the hipparion red soil tunnel can be quickly, continuously and accurately measured, the problem existing in the construction process is fed back in time, and a construction design scheme is regulated in real time.

Description

technical field [0001] The invention belongs to the technical field of engineering measurement, and specifically relates to a tunnel stress measurement system and method, in particular to a stress measurement system and method for a three-toed red soil tunnel under the influence of crack water, which is used for three-toed red soil below the groundwater level Fast and accurate measurement of surrounding rock stress during tunnel construction. Background technique [0002] Affected by the complexity and variability of the rock and soil mass, the stress field and mechanical behavior of the surrounding rock of the tunnel are usually more complex. Monitoring the stress of the surrounding rock is a very important task in tunnel construction. It is to monitor whether the surrounding rock is stable, The basis for judging whether the timing of the secondary lining is appropriate and checking whether the support structure is reasonable. At present, the monitoring and measurement of ...

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Problems solved by technology

At present, the monitoring and measurement of tunnel surrounding rock stress in the "Code for Construction of Railway Tunnels" (TB10204-2002) only involves surrounding rock pressure, without considering the influence of groundwater pore water pressure

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