临江深厚砂卵石地层止水帷幕改良试验研究

为了使止水帷幕发挥更好的效果,首先采用室内试验确定合理水泥掺入量,其次对传统高压旋喷桩设备进行改良,并将室内试验的研究成果应用到现场试验,形成一种强力搅拌旋喷桩。研究结果表明,为了保证止水帷幕的防水质量以及经济性,可在实际工程中采用11%的水泥掺入量。此外,采用全新设备形成的强力搅拌旋喷桩,提高止水帷幕成桩质量合格率,节约了施工成本,加快了施工进度,为今后类似工程的开展提供了借鉴。

Experimental Study on Improvement of Water Stop Curtain in Thick Sandy Cobble Stratum near the River

In order to make the water-stop curtain play a better effect,the indoor test was firstly used to determine the reasonable cement mixing amount, and then the traditional high-pressure jet grouting pile equipment was improved, and the research results of the indoor test to the field test were applied to form a the utility model relating to a powerful stirring rotary spraying pile. The research results are as follows.In order to ensure the waterproof quality and economy of the water-stop curtain, 11% cement can be added in the actual project. In addition, the powerful agitation and rotary grouting piles formed by the use of new equipment have improved the qualified rate of water-stop curtain pile quality, saved construction costs, accelerated construction progress, and provided a reference for the development of similar projects in the future.