| 摘要 |
A pressure meter probe for probing rock fractures is provided to check the gap interval and direction of rock fracture traces with the naked eye simply by forming a membrane unit of a pressure meter probe with uncoated synthetic resins. A pressure meter probe for probing rock fracture comprises: a data input/output monitoring unit inputted with the necessary data for probe and outputting the probed result into various graphs or output data; a main control unit inputted with data from the data input/output monitoring unit and composed of a depth measurement unit and a pressure gauge to check the insertion depth of a probe, a sound device to make various alarms or necessary sound for probe, a regulator and a pressure setter; a water supply control unit composed of a water supply unit to supply the stored water of a water tank to a constant pressure pump and a water measurement unit to check the quantity of water; and a probe unit(15) inserted to a perforation filled with water supplied through a water supply pipe, composed of a membrane unit provided with sleeves(151) and a membrane(152) placed between the sleeves, and made with uncoated synthetic resins to form fracture traces(161) of bedrock(16). The probing method using the pressure meter probe comprises the steps of perforating the bedrock using a screw auger or a perforator, inserting the probe unit into the perforation, controlling the water supply unit and the water supply measurement unit of the water supply control unit mechanically in the main control unit using the data received from the data input/output monitoring unit, supplying water from a water tank to the membrane through the water supply pipe and the sleeve, expanding the membrane unit and applying above the appointed pressure, and then drawing out the probe unit, so that the fracture traces of the bedrock remain on the outer circumference of the membrane to forecast the gap interval and direction of rock fracture, the pressure applied on the membrane and the moving passage of an internal wall of the perforation.
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