Pressure-reducing flow-stabilizing device applied to engineering investigation pump-in test and construction method of device

Abstract

The invention discloses a pressure-reducing flow-stabilizing device applied to an engineering investigation pump-in test and a construction method of the device. The device comprises a pressure-reducing flow-stabilizing pipeline, wherein one end of the pressure-reducing flow-stabilizing pipeline is provided with a water inlet, and the water inlet is connected with a simplex pump through a water inlet pipe; the other end of the pressure-reducing flow-stabilizing pipeline is provided with a water outlet, the water outlet is connected with a drill rod through a water outlet pipe, and the drill rod extends into a test segment to perform the pump-in test; and a plurality of equidistant or non-equidistant first partition plates and second partition plates are further arranged in an inner cavityof the pressure-reducing flow-stabilizing pipeline, and the first partition plates, the second partition plates and the interior of the pressure-reducing flow-stabilizing pipeline form water flow buffer regions. The device is novel and reasonable in structure and convenient to use, can buffer turbulent water into laminar water, guarantees the stability of water flow, greatly increases the accuracyrate of a test result and provides an accurate design basis for engineering subsequent design and construction.

Description

technical field [0001] The invention relates to a decompression and flow stabilization device, in particular to a decompression and flow stabilization device which can use a single-cylinder pump to carry out a water pressure test in engineering survey, and belongs to the technical field of geotechnical engineering survey. Background technique [0002] Generally speaking, at this stage, geotechnical engineering investigation activities are a process of converting water kinetic energy into mechanical kinetic energy. The survey equipment is a drilling rig and a single-cylinder water pump. Water pressure tests are required in soil engineering survey projects. Usually, in order to ensure the stability of water flow in water pressure tests, double-cylinder pumps or multi-cylinder pumps must be used for pressurization. However, in the actual operation process, many exploration labor teams have Due to their own professional reasons, the single-cylinder pump and the multi-cylinder pu...

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Problems solved by technology

[0002] Generally speaking, at this stage, geotechnical engineering investigation activities are a process of converting water kinetic energy into mechanical kinetic energy. The survey equipment is a drilling rig and a single-cylinder water pump. Water pressure tests are required in soil engineering survey projects. Usually, in order to ensure the stability of water flow in water pressure tests, double-cylinder pumps or multi-cylinder pumps must be used for pressurization. However, in the actual operation process, many exploration labor teams have Due to their own professional reasons, the single-cylinder pump and the multi-cylinder pump will not be used at the same time. As a result, only the single-cylinder pump can be used for the pressurized water test. The result of the single-cylinder pump test is that the water flow is unstable and turbulent, resulting in The test results are inaccurate and cannot provide an accurate design basis for the subsequent design and construction of the project

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