Mounting positioning device of surrounding rock pressure cell
A technology of installation positioning and surrounding rock pressure, applied in the direction of measuring device, measuring force, instrument, etc., can solve the problems of inaccurate positioning, unreasonable force, and large installation workload.
Active Publication Date: 2018-02-09
BEIJING UNIV OF TECH
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Problems solved by technology
[0003] The invention aims to solve the problems of large installation workload, inaccurate positioning, unreasonable force, and influence of later construction in the process of using the pressure box of the surrounding rock of the initial lining of the tunnel, and invents an installation and positioning device for the pressure box of the surrounding rock of the tunnel
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Embodiment 1
[0025] Figure 1-6 Show the basic composition of the present invention, hard plastic barrel 1 mainly plays the effect of supporting plastic bag 2, and plays the effect of insulating mortar in the later stage backside grouting. Plastic bucket 1 has engraved groove, and engraved groove is reticular, can make when subjected to surrounding rock pressure, the barrel wall of top thinner place can fracture, fragmentation, and the bottom then guarantees that there is larger deformation, but can not be fragmented.
[0026] The fine sand is put in from the middle hole of the fixed plate 3, and the pressure box is put in from the insertion slot 6 reserved on the fixed plate, turned over, and fixed with the pressure box lock 7 (the pressure box lock is an L-shaped structure, all One end of the L-shaped structure is vertically fixed to the fixed plate 3, and the other end is scattered inward to form a plane), which also plays the role of blocking the sandbags.
[0027] Bottom spring sheet...
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The invention provides a mounting positioning device of a surrounding rock pressure cell, and belongs to the technical field of engineering monitoring or experimental measurement. The mounting positioning device of a surrounding rock pressure cell includes an upper sandcell and a lower spring bearer, wherein the upper sandcell includes a hard plastic bucket and a plastic bag; the hard plastic bucket is trumpet-shaped, and one end of the hard plastic bucket has a big opening, and the other end of the hard plastic bucket has a relatively small opening; the opening of the plastic bag attaches toand is pasted on the small opening of the hard plastic bucket together; the lower spring bearer includes a fixing plate and spring leaves; the fixing plate is an annular plate shaped structure, and the center annular hole is provided with pressure cell accommodating grooves in two ends of one diameter of the circular ring; a plurality of bolt seats with bolt holes are arranged in the outer side radial direction of the annular plate shaped structure of the fixing plate; a plurality of pressure cell latches are arranged on the plate surface of the fixing plate; the small opening end of the hardplastic bucket and the plate surface of the fixing plate are fixed together, and at the same time the pressure cell latches are arranged in the hard plastic bucket; and the other end of each spring leaf is a U-shaped clamping piece. The mounting positioning device of a surrounding rock pressure cell can solve the problems that the mounting workload is heavy; positioning is inaccurate; the bearingis unreasonable and the later construction is influenced during the using process of the surrounding rock pressure cell at the initial lining of a tunnel.
Description
technical field [0001] The invention relates to an installation and positioning device for a surrounding rock pressure box of a tunnel, belonging to the technical field of engineering monitoring or experimental measurement. Background technique [0002] The pressure cell is now widely used in the measurement of the surrounding rock pressure of tunnel engineering and the compressive stress of rock and soil in experiments. When installing the existing tunnel surrounding rock pressure cell, the back of the rock mass is first leveled, or a relatively flat position is found. , place the force-bearing surface of the pressure box facing this position, and place a certain thickness of sand between the pressure box and the rock mass to ensure uniform force. After that, it is necessary to fix the back of the pressure cell to an arch, etc. Because there is no special installation and positioning device, the workload on the site is relatively large, the installation error is large, the...
Claims
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IPC IPC(8): G01L1/26
CPCG01L1/26
Inventor 高文学王林台邓洪亮石连松曹晓立叶阗瑞
Owner BEIJING UNIV OF TECH