Slurry forretaining wall in use for not excavating drilling
A trenchless, mud technology, applied in the field of mud, can solve the problems of easy leaking and collapsing horizontal hole sections, economic losses of construction units, hole forming and hole reaming difficulties, etc. The effect of poor hole effect and improving drilling efficiency
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Embodiment 1
[0039] Add 6 kg of calcium soil + 0.3 kg of soda ash + 0.3 kg of Na-CMC (medium viscosity sodium carboxymethyl cellulose) + 0.3 kg of wild plant pumice plant glue into 100 kg of water. This formula has been used experimentally in the non-excavation directional drilling pipe laying project of Xiangfu Quyuan, Xiangfu Road, Changsha City. It has been proved that it can play a certain role in protecting the wall in the construction of sandy soil and quicksand formation, and stabilize the hole wall. The role of cooling drill bits and drilling tools.
[0040] The measured performance of its indicators is as follows:
[0041] ①Viscosity: T=28s;
[0042] ②Specific gravity: ρ=1.05g / cm 3 ;
[0043] ③30min water loss: B=16ml;
[0044] ④PH value: PH=9;
[0045] ⑤ Colloid rate: 100%;
[0046] ⑥ Rheological properties (provide measurement values of six-rotational viscometer), see attached table 1:
[0047]
Embodiment 2
[0049] Add 5kg of sodium soil + 0.4kg of Na-CMC (medium viscosity sodium carboxymethyl cellulose) + 1kg of wild plant pumice plant glue into 100kg of water. This formula has a high viscosity, which can play a good role in protecting walls and improving the construction conditions of sandy soil and quicksand formations. The experimental use in the trenchless pipe laying project of Wuyi Road in Changsha City played a vital role in the smooth completion of the project.
[0050] The measured performance of its indicators is as follows:
[0051] ①Viscosity: T=35s;
[0052] ②Specific gravity: ρ=1.035g / cm 3 ;
[0053] ③30min water loss: B=12.5ml (measured value);
[0054] ④PH value: PH=8;
[0055] ⑤ Colloid rate: 100%;
[0056] ⑥Rheological properties (provide the measured values of the six-rotational viscometer) see attached table 2:
[0057]
Embodiment 3
[0059] Add 5kg of calcium soil + 0.25kg of soda ash + 0.25kg of Na-CMC + 0.25kg of wild plant Phoebe plant glue into 100kg of water. The formula has good fluidity and certain viscosity, can play the role of wall protection in the construction of sandy soil and quicksand formation, and can cool the drill bit and drilling tools and reduce the frictional resistance.
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