Product Details

Drilling diameter: 1.4m to 1.8m

Drilling depth: 11m to 18m

Construction geology: soil, strongly weathered mud siltstone, moderately weathered mud siltstone, moderately weathered tuff

Construction method: mainly using concentric circles to expand the hole step by step, for soft geology, using 1.2m diameter double bottom sand bucket to drill, and then using large diameter double bottom sand bucket to form the hole, for harder geology, using 800 barrel drill to take core, and then expanding the hole step by step to form a large hole diameter.