(1)可开启,单侧支架沟顶深:0m;净深:0.8~1.8m;净宽:0.7~1.1m。(2)可开启,双侧支架沟顶深:0m;净深:0.8~1.8m;净宽:1.0~1.7m。(3)不可开启,单侧支架沟顶深:≥0.3m;净深:1.5~1.8m;净宽:0.7~1.1m;(4)不可开启,双侧支架沟顶深:≥0.3m;净深:1.5~1.8m;净宽:1.0~1.7m。
(1)可开启,单侧支架沟顶深:0m;净深:0.8~1.8m;净宽:0.7~1.1m。(2)可开启,双侧支架沟顶深:0m;净深:0.8~1.8m;净宽:1.0~1.7m。(3)不可开启,单侧支架沟顶深:≥0.3m;净深:1.5~1.8m;净宽:0.7~1.1m;(4)不可开启,双侧支架沟顶深:≥0.3m;净深:1.5~1.8m;净宽:1.0~1.7m。