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  • RC DRILLING

    >> Reverse Circulation is a drilling method widely used around the world. >> RC drilling uses dual wall drill rods consisting of an outer drill rod with an inner tube. These hollow inner tubes allow the drill cuttings to return back to the surface in a continuous, steady flow. >>...
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  • Cause analysis and control measures of pile bottom sediment in rotary digging pile

    The sediment of pile bottom may be generated in the construction of drilling holes, the placement of steel cage, and the pouring of concrete. The analysis shows that the causes of sediment can be roughly divided into the following categories: 1.1 Pile hole hole wall collapse 1.1.1 Cause Analysis ...
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  • Problems and countermeasures of deep pile construction

    1. The construction efficiency is low, mainly due to the high time of lifting the drilling tool and the low efficiency of the drill pipe to transfer the drilling pressure. the way to deal with a situation: (1) Increase the length of the drill bit to increase the amount of ballast per drill; (2) T...
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  • What is a three-axis mixing pile?

    ]Three axis mixing pile is a kind of long spiral pile, pile machine has three spiral drilling at the same time, construction three spiral drilling down construction at the same time, generally used for underground continuous wall construction method, is an effective form of soft foundation treat...
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  • Detection of the foundation treatment effect

      1.  Change the filling method After changing the foundation method, the ring knife method, static touch test, light dynamic touch test and standard penetration test should be used to test the effect of foundation treatment. During testing, the sampling point should be located at 2 / 3 of ...
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  • Sand and silt layer rotary drilling method

    1. The characteristics and risks of sand and silt layer When drilling holes in fine sand or silty soil, if the groundwater level is high, mud should be used to form holes for wall protection. This kind of stratum is easy to be washed under the action of water flow because there is no adhesion bet...
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  • Pile foundation can be selected in the following cases

    1. Pile foundation can be used when the foundation is weak and the natural foundation cannot meet the requirements of foundation strength and deformation. 2, when there are strict requirements for building deformation, pile foundation should be used. 3. Pile foundation should be used when high-ri...
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  • Underground diaphragm wall main construction method :SMW construction method, TRD construction method, CSM construction method

    SMW(Soil Mixing Wall) continuous wall was introduced in Japan in 1976. SMW construction method is to drill to a certain depth in the field with a multi-axis drilling mixer. At the same time, cement strengthening agent is sprayed at the drill bit and mixed with the foundation soil repeatedly. Over...
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  • Overview of TRD

    Introduction to TRD • TRD (Trench cutting Re-mixing Deep wall method), a continuous wall construction method under equal thickness cement soil, developed by Japan’s Kobe Steel in 1993, which uses a saw chain cutting box to continuously construct continuous walls under equal thickness cement...
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  • Rotary drilling method of granite and other hard rock strata

    The characteristics of hard rock formations such as granite and the risk of hole formation. When designing pile foundations for many large bridges, the piles are required to penetrate into the weathered hard rock to a certain depth, and the diameter of the piles designed for these pile foundation...
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  • Beijing SINOVO GROUP has officially become a member of Import and Export Enterprises Association

    In December 2023, the third member meeting of the seventh session of the Beijing Chaoyang District Import and Export Enterprise Association was successfully held.Han Dong, deputy director of the Beijing Chaoyang District Commerce Bureau, the business guidance unit of the association, came to giv...
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  • Key points of pile foundation construction of karst cave

    When constructing pile foundations in karst cave conditions, here are some key points to consider:   Geotechnical Investigation: Conduct a thorough geotechnical investigation prior to construction to understand the characteristics of the karst cave, including its distribution, size, and poss...
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