Rock mass permeability coefficient in-situ measurement device and its acquisition control system
A technology for in-situ measurement of permeability coefficient, applied in the field of in-situ measurement of rock mass permeability coefficient, can solve the problems of high technical difficulty, difficult implementation, low precision, etc., and achieve the effects of high measurement accuracy, ensuring stability, and easy portability
Active Publication Date: 2016-08-17
南京坤巨科技有限公司
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Problems solved by technology
[0008] The technical problem to be solved by the present invention is the technical difficulty, low precision, high cost, time-consuming and difficult implementation of rock mass permeability coefficient measurement by using on-site manual water pressure test
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[0026] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0027] Such as figure 1 As shown, the in-situ measurement device for rock mass permeability provided by the present invention includes a collection and control system 10, a high-pressure water pump 20, and a water injection sealing plug 30 for enclosing the borehole.
[0028] The water outlet of the high-pressure water pump 20 is connected to the pressure-stabilizing water tank 70, and the water inlet pipe 11 of the acquisition control system 10 is connected to the water outlet of the pressure-water tank 70 through the first pipeline. On the pipeline between the pressure-stabilizing water tank 70 and the high-pressure water pump 20 A check valve 40 is provided, and the water outlet pipe 12 of the collection control system 10 is connected to the water injection port on the water injection plug 30 through the second pipeline. Both the first pipeline and the second pip...
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The invention discloses a rock mass permeability coefficient in situ measurement device and an acquiring control system thereof, the measurement device comprises an acquiring control system, a high-pressure water pump and a water-injection hole-sealing plug; a central control unit, an I / O interface module as well as a water inlet pipe and a water outlet pipe are encapsulated in the acquiring control system, the water inlet pipe is connected with the water outlet pipe through a connecting pipeline; the connecting pipeline is provided with a first pressure sensor, a second pressure sensor, an electromagnetic value and a flow sensor; a central control unit is used for sending out a corresponding acquiring control instruction according to predetermined programs and parameters; the I / O interface module is used for converting the control instruction into an analogue signal to control the opening / closing of the high-pressure water pump and the on-off of the electromagnetic valve and acquiring a water-injection flow value and a pressure value, and returning to the central control unit to analyze and storage. According to the device disclosed by the invention, the automatic pump-in test can be conveniently performed in a rock mass drill, the main measurement and control elements are in package structures, the design is compact, the carrying is convenient; the automatic measurement control system is simple to operate and high in measurement precision.
Description
technical field [0001] The invention relates to an in-situ measurement device for rock mass permeability coefficient and an acquisition control system thereof, which is suitable for in-situ measurement of rock mass permeability coefficient in the fields of underground engineering, water conservancy and hydropower engineering, tunnel engineering, petroleum engineering and the like. Background technique [0002] Due to the characteristics of inhomogeneity, discontinuity and anisotropy of rock mass, it has always been a difficult but very important task to reasonably determine the permeability coefficient of rock mass in the field of rock mechanics and underground engineering. [0003] At present, the common methods to determine the seepage coefficient of rock mass mainly include field measurement method, indoor test method and in-situ test method. Among them, the field measurement method is simple and easy to implement, but because the cracks in the rock mass are not infinitel...
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IPC IPC(8): G01N15/08
Inventor 段云岭赵雪峰冯金铭魏雪斐
Owner 南京坤巨科技有限公司