Contributes to the labor-saving and efficiency of rock mass investigation drilling! Tests can be conducted in vertical, inclined, or horizontal directions.
The "Multi-Directional Dynamic Penetration Test of Rock Mass Using RPD" is a dynamic penetration testing method that allows for simultaneous measurement of the continuous impact penetration resistance (P value) in horizontal and inclined directions of rock mass, as well as the collection of core samples, utilizing a rotary percussion drill. Only the test specifications using a medium-sized RPD or large RPD with a PS-WL (Percussion Wireline Sampler) at the drilling tip can collect core samples while measuring the P value simultaneously. Additionally, it can be applied to unconsolidated ground such as cohesive soils, sands, and gravel, as well as cement-treated ground. 【Features】 ■ The P value has a good correlation with conventional sounding test results such as N values and unconfined compressive strength (qu), making it useful as an indicator for understanding continuous changes in soil hardness and softness, as well as estimating soil physical properties such as strength characteristics. ■ The P value can be determined from the penetration time required for the drilling tip to penetrate the ground to any desired depth, along with the RPD's impact, rotation, and feed hydraulic pressure (measured by the control panel's indicators) at that time. *For more details, please refer to the PDF document or feel free to contact us.
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【Other Features】 ■ Testing is possible in vertical, inclined, or horizontal directions. ■ Core samples collected with PS-WL can be used for distinguishing geological and sedimentary structures and for laboratory tests. ■ Confirmed that the impact energy propagation efficiency of RPD is good. ■ When estimating ground physical properties using P values as an indicator, it is necessary to compare the test results of the collected core samples with the most recent prior survey results. *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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Our company will celebrate its 80th anniversary in October of the 8th year of Reiwa. For many years, as a top manufacturer of boring machines, we have poured our passion into product development and have strived to refine our technology as specialists in boring. As a result, we have gained significant trust from everyone as "the Mining Research of Technology," leading us to where we are today. While leveraging our experience, we will always return to our roots and dedicate ourselves to unique product development and the establishment of boring methods to meet the needs of the times. Moving forward, we will not rest on our historical achievements but will renew our commitment to reform as "New Mining Research," build a stable management foundation, and contribute to the realization of a vibrant and prosperous society, all while earning the trust and evaluation of everyone. Our employees will unite to "move forward." We kindly ask for your warm understanding and continued support.