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结合地铁勘察现场监管经验,提出对地下管线安全、岩土分层、原位测试、花岗岩风化球、钻孔回填等方面应进行重点监管,包括采取多种措施和技术手段查明地下管线分布;准确量测关键性岩土层分界线和孔深;严格按要求进行原位测试和取样;注意花岗岩地区的风化球问题;钻孔验收后严格按要求进行回填等。
Combined with the supervisory experience of subway survey, the paper puts forward that the underground pipelines should be under the supervision of safety, geotechnical stratification, in situ testing, granite weathered balls, backfilling of drilling holes and so on, including the adoption of various measures and technical measures to identify the distribution of underground pipelines. Accurate measurement of the critical boundary layer of rock and soil depth and hole depth; in-situ testing and sampling strictly in accordance with the requirements; pay attention to the weathered ball problem in granite; drilling back in accordance with strict requirements of the backfill.