卵砾石含水层高压旋喷注浆止水帷幕技术

朱明诚; 韩强; 赵贵斌; 刘玉柱

doi:10.3969/j.issn.1001-1986.2020.04.011

卵砾石含水层高压旋喷注浆止水帷幕技术

1. 中煤科工集团西安研究院有限公司，陕西西安 710077;
2. 国家能源集团大雁公司，内蒙古呼伦贝尔 021122

基金项目:

国家重点研发计划项目课题（2017YFC0804106）

详细信息

作者简介:
朱明诚,1962年生,男,陕西西安人,研究员,从事矿山水害防治研究工作.E-mail:zhumingcheng@cctegxian.com

通讯作者:
韩强,1987年生,男,陕西西安人,硕士,工程师,从事工程地质与岩土工程方向的研究.E-mail:hq102536@163.com

中图分类号: TU472.3
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出版历程
- 收稿日期: 2020-04-06
- 修回日期: 2020-06-22
- 发布日期: 2020-08-24

Technology of high pressure jet grouting water cutoff curtain in gravel aquifer

1. Xi'an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi'an 710077, China;
2. Dayan Company of China Energy Investment Corporation, Hulun Buir 021122, China

Funds:

National Key R&D Program of China(2017YFC0804106)

摘要

摘要: 高压旋喷桩主要适用于淤泥质土、黏性土、粉土、砂土、黄土和碎石土等地层，在卵砾石地层或动水条件下的应用较少。我国某露天矿在施工旋喷桩止水帷幕的过程中，采用RJP工法进行帷幕施工，成功将高压旋喷注浆技术应用于卵砾石含水层中，通过试桩和筛分试验将卵砾石层特征对桩径大小的影响进行了分析研究，结果表明，RJP工法在卵砾石含水层中成桩效果良好、质量可靠，其桩径大小与卵砾石颗粒大小及含砂量有关。围井试验结果显示，高压旋喷桩帷幕墙完整，止水效果显著。研究成果表明高压旋喷注浆技术可在卵砾石含水层的加固和止水领域进行推广应用。
- RJP工法 /
- 取心验证 /
- 桩径 /
- 筛分试验 /
- 围井试验 /
- 露天煤矿
Abstract: The high-pressure jet grouting pile is mainly suitable for the muddy soil, cohesive soil, silt, sand, loess and gravelly soil, but it is seldom used in the gravel stratum or under the dynamic water condition. A water cutoff certain in an open-pit coal mine was constructed by using RJP method, and the high pressure jet grouting technique was successfully applied to gravel aquifer. Based on the pile test and screening test, the influence of gravel layer characteristics on the size of pile diameter was analyzed. The results show that the RJP method had good effect and reliable quality in the gravel aquifer, and the pile diameter was related to the gravel particle size and sand content. Combined with the surrounding well test results, it was concluded that the curtain wall of high-pressure jet grouting pile was complete and had remarkable water cutoff effect. The research shows that the high pressure jet grouting technology could be applied in gravel aquifer for strata strengthening and water cutoff.
- method of RJP /
- coring verification /
- pile diameter /
- screening test /
- surrounding well test /
- open-pit coal mine

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