Comprehensive displacement-strain early warning system for anchor rod
A technology of displacement and bolting, which is applied to the installation of bolts, mining equipment, mining equipment, etc., can solve the problems of cumbersome construction procedures, waste of manpower and material resources, complicated testing procedures, etc., and achieve the effect of maintaining the stability of the roadway and ensuring safe production
Inactive Publication Date: 2015-12-23
XIANGTAN UNIV
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Problems solved by technology
However, in the process of bolt support, how to effectively track the support process and evaluate the support performance has become a new technical problem. The existing methods usually use the resistance strain monitor and the displacement strain tester to test the bolt separately. Strain monitoring, connect the anchors one by one and carry out stress or displacement strain test and investigation, find out the hidden dangers one by one to judge whether the support fails, this method is cumbersome in construction procedures, complicated in testing procedures, and wastes a lot of manpower and material resources
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[0012] Below in conjunction with accompanying drawing, the implementation process of the present invention is described in further detail:
[0013] Such as figure 1 As shown, the present invention consists of a bolt body 1, a displacement strain gauge 2, a signal transmission line 3, a wall anchor lock terminal 4, a signal receiving processor 5, an induction chip 6, a signal output tube 7 and an alarm 8. A shallow groove is set in the body 1 of the anchor rod, and the displacement strain gauges 2 are evenly spaced in the shallow groove, and the deformation parameters of the anchor rod are sequentially transmitted through the signal transmission line 3, and the signal reaches the built-in sensor through the wall anchor lock terminal 4. The signal receiving processor 5 of the chip 6 performs data analysis and signal processing on the displacement parameter signal. When the displacement deformation exceeds the maximum allowable rated deformation value of the bolt itself, the alar...
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The invention discloses a comprehensive displacement-strain early warning system for an anchor rod. The comprehensive displacement-strain early warning system mainly comprises an anchor rod body, displacement strain meters, a signal transmission line, a wall surface anchoring end, a signal reception processor, a sensing chip, a signal output pipe and a warning device. A shallow slot is formed in the anchor rod body, and the displacement strain meters are uniformly arranged in the shallow slot in an interval mode. The deformation parameters of the anchor rod body are sequentially transmitted through the signal transmission line, the signals reach the signal reception processor with the sensing chip internally arranged through the wall surface anchoring end, the signal reception processor carries out data analysis and signal processing on the signals of the deformation parameters, and when the displacement deformation exceeds the maximum allowable rated deformation value of the anchor rod, warning commands are transmitted to the warning device through the signal output pipe for sending warning signals. The comprehensive displacement-strain early warning system changes the traditional separation mode of independent anchor rod supporting and monitoring and early-warning, perfectly integrates and organically recombines anchor rod supporting and monitoring and early-warning and has great significance of maintaining the roadway stability and guaranteeing the safety production.
Description
technical field [0001] The invention relates to the field of roadway surrounding rock deformation monitoring and support effect evaluation and analysis, in particular to a comprehensive early warning system for displacement and strain bolts. Background technique [0002] The support methods of roadway surrounding rock are usually divided into two types: active support and passive support. Passive support generally adopts U-shaped steel, I-shaped steel, trapezoidal steel shed and other metal-shaped steel to carry out passive load-bearing support on the roadway roof and two sides of surrounding rock. For support, due to the low support resistance and uneven force distribution of the support, the support is easily deformed and damaged due to the uneven load of the support; the active support is mainly based on the bolt support, which can effectively limit the anchorage area. The dynamic expansion, interlayer drift, crack expansion and layer sliding of the rock can give full pla...
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IPC IPC(8): E21F17/18E21D21/00
CPCE21D21/00E21F17/18
Inventor 王新丰李贺侠李海森陈宾鹿浩黄登山
Owner XIANGTAN UNIV