Contributes to the labor-saving and efficiency of rock core drilling! Testing is possible in vertical, inclined, or horizontal directions.
The "Multi-Directional Dynamic Penetration Test of Rock Using RPD" is a dynamic penetration testing method that utilizes a rotary percussion drill, allowing for simultaneous measurement of the continuous impact penetration resistance (P value) in horizontal and inclined directions, as well as the collection of core samples. 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 soil, sand, 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 the continuous changes in soil hardness and estimating soil physical properties such as strength characteristics. ■ The P value can be determined from the penetration time it takes 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 can be conducted in vertical, inclined, or horizontal directions. ■ Core samples collected with PS-WL can be used for distinguishing geological and sedimentary structures as well as 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 celebrated its 70th anniversary in October 2017. For these 70 years, we have passionately dedicated ourselves to product development as a top manufacturer of boring machines and have strived to refine our technology as specialists in boring. As a result, we have gained significant trust from everyone as "the technology of mining research," leading us to where we are today. While leveraging our experience, we are committed to returning to our roots and fully dedicating 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 spirit and advance reforms as "New Mining Research." We aim to build a stable management foundation and contribute to the realization of a vibrant and prosperous society, earning the trust and evaluation of everyone as we move forward together as one team. We kindly ask for your warm understanding and continued support.