Rock-soil body water pressure testing device and testing method

Abstract

The invention provides a rock-soil body water pressure testing device. The rock-soil body water pressure testing device comprises a water stopping plug, a water supplying device and a measuring device, wherein the water supplying device comprises a containing water tank; the water stopping plug is used for blocking one section of a water pressure testing drilling hole to form a water pressure testing section; the measuring device comprises an osmometer which is fixedly mounted at the water pressure testing section and is used for measuring pressure of the testing section, an osmometer which is mounted in the containing water tank and is used for measuring flow, and a water pressure testing real-time monitoring device; a cable of the osmometer for measuring the pressure of the testing section is led out from a rubber plug reserved steel pipe water outlet hole arranged in the water pressure testing section and is connected with the water pressure testing real-time monitoring device; a cable of the osmometer for measuring the flow is led out from the containing water tank and is connected with the water pressure testing real-time monitoring device. The rock-soil body water pressure testing device can be used for accurately monitoring the pressure of the testing section and water supply flow, so that the seepage property of a rock-soil body can be accurately evaluated.

Description

technical field [0001] The invention belongs to the technical field of rock-soil mass permeability tests, and in particular relates to a rock-soil body pressure water test device and a test method. Background technique [0002] When constructing engineering buildings on or within the rock and soil mass, it is necessary to study the water permeability of the rock and soil mass in the building area and its influence range. Methods for determining the permeability of rock and soil include water pressure test, water injection test, pumping test, etc. Among them, the pressure water test is the most commonly used in-situ permeability test of rock and soil in boreholes. The specific method is to use a plug to isolate a certain length of hole section from the rest of the hole section during the drilling process or after the end of the drilling, use different pressures to send water to the test section, measure the corresponding flow value, and based on this Calculate the water per...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the pressure water test device (see attached figure 1 ) pressure gauges and flowmeters are outside the orifice, and the pressure loss of pipelines, pipe joints and other pipelines makes it difficult to calibrate the pressure loss of pipelines at all levels of pressure during the process of pressurized water data collation, coupled with the influence of human factors and environmental factors It is difficult to accurately analyze and evaluate the permeability characteristics of rock and soil

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