Table 1 Dynamic model parameter table.
From: Analysis of drilling vibration characteristics of anchoring system in coal mine
Code | Name | Code | Name |
|---|---|---|---|
m1 | Support platform quality | m21~24 | Quality of front and rear support columns |
m3 | Quality of top anchor beam | m4 | Mass of anchor cable crossbeam |
m5 | Quality of top anchor drilling rig frame | m6 | Quality of support plate for top anchor drilling rig |
m7 | Quality of power head of top anchor drilling rig | m8 | Quality of top anchor drill pipe |
m9 | Quality of anchor cable drilling rig frame | m10 | Quality of anchor cable support plate |
m11 | Quality of power head of anchor drilling rig | m12 | Quality of anchor cable drilling rig drill pipe |
k11~14 (c11~14) | Stiffness and damping between the front and rear support columns and the support platform | k21~24 (c21~24) | Stiffness and damping between front and rear support columns, top anchors, and anchor cable transverse beams |
k3(c3) | Stiffness and damping between the top anchor crossbeam and the four top anchor frame | k4(c4) | Stiffness and damping between anchor cable crossbeam and anchor cable frame |
k51(c51) | Stiffness and damping between the top anchor frame and the top anchor support plate | k52(c52) | Stiffness and damping between the top anchor frame and the top anchor power head |
k6(c6) | Stiffness and damping between top anchor support plate and roadway roof | k7 (c7) | Stiffness and damping between the top anchor power head and the top anchor drill pipe |
k8 (c8) | Stiffness and damping between top anchor drill pipe and roadway roof | k91 (c91) | Stiffness and damping between anchor cable frame and anchor cable support plate |
k92 (c92) | Stiffness and damping between anchor cable frame and anchor cable power head | k10(c10) | Stiffness and damping between anchor cable support plate and roadway roof |
k11(c11) | Stiffness and damping between anchor cable power head and anchor cable drill pipe | k12(c12) | Stiffness and damping between anchor rope drill pipe and tunnel roof |
kt1~ t4 (ct1~ t4) | the equivalent stiffness and equivalent damping between legs 1–4 and the ground respectively | a | the distance between the center of gravity of the support platform and the leg |
b | half the thickness of the support platform | d | half the width of the support platform |
J1 | the rotational inertia of the excavation direction of the support platform | \(\rho\) | the pitching vibration angle of the excavation direction of the support platform |
J2 | the rotational inertia of the horizontal direction of the support platform | \(\varpi\) | the left and right vibration angle of the horizontal direction of the support platform |
Fdc1 | the reaction force of the four anchor support plate | Fdz1 | the reaction force of the four anchor drilling |
Fsc1 | the reaction force of the two anchor cable support plate | Fsz1 | the drilling reaction force of the two anchor cables respectively |
x1 ~ x12 | the longitudinal x displacement of each mass block of the anchorage system in turn |  |  |
