王家河隧道位于本省灵宝至卢氏公路的后瑶村,全长508米,净宽7米,1970年12月建成。59~K+770～59~K+890一段长120米,根据石质情况,用170~＃混凝土衬砌,各段衬砌厚度40～80厘米。自建成后,至今近九年时间内,衬砌段的侧墙和拱圈的裂缝逐年发 The Wangjiahe Tunnel, located in Houyao Village of Lingbao-Lushi Highway in the province, has a total length of 508 meters and a net width of 7 meters. It was completed in December 1970. 59 ~ K + 770 ~ 59 ~ K + 890 A length of 120 meters, according to the stone, with 170 ~ # concrete lining, the lining thickness of 40 to 80 cm. Since its completion, nearly a decade has passed since the cracks in the sidewalls and arch rings of the lining sections have been issued annually