A.導(dǎo)線點(diǎn)應(yīng)設(shè)在頂板巖石穩(wěn)固、能避開(kāi)電纜和淋水之處,以便于保存和觀測(cè)
B.測(cè)點(diǎn)間通視良好,間距盡量均勻
C.凡巷道分叉、拐彎、變坡點(diǎn)均應(yīng)設(shè)點(diǎn)
D.永久點(diǎn)應(yīng)在施測(cè)前1-2天設(shè)好
E.導(dǎo)線點(diǎn)應(yīng)統(tǒng)一編號(hào),并將編號(hào)標(biāo)于所設(shè)點(diǎn)處,便于尋找