柔模泵注混凝土支护技术是地下工程支护的新形式，无煤柱开采护巷分为沿空留巷、沿空掘巷、跨采和预采无煤柱护巷以及在采空区内形成巷道四种形式，其中沿空留巷这种无煤柱护巷方式在技术和经济上有许多优越性，因而对于条件适合的矿井都优先采用。沿空留巷的基本方式是将当上区段工作面采过后，将上工作面的运输机巷用专门的支护材料进行维护，使此保留下来的巷道做为下区段工作面的回风巷，这样一条巷道可以得到两次利用。柔模泵注混凝土支护技术已在沿空留巷方面广泛应用。 在地下支护中，来自顶板的初应力很早，为满足该技术的结构设计及施工工艺要求，需要对低龄期柔模泵注混凝土性能做深入研究。本论文通过正交试验方法得出一组适合柔模泵注混凝土支护技术的配合比，并测混凝土试件在不同龄期8h、12h、1d、3d、5d、7d、14d的抗压强度。然后将一次压裂的试件重新放入养护室养护， 使其愈合，待其养护到28天再次测其抗压强度。该课题的研究对柔模泵注混凝土的早期强度以及加快施工进度都有很重要的意义。 本论文对柔模泵注混凝土抗压强度指标进行了研究，并与普通混凝土力学性能进行对比，实验结果表明，柔模泵注混凝土的早期强度很高，其强度明显高于普通混凝土。一次压裂的柔模泵注混凝土的残余应力很大，待继续养护后，其二次压裂强度不但没有减小，反而增大。说明柔模泵注混凝土有很强愈合能力，使微裂缝完全愈合。 本论文以桑树坪煤矿沿空留巷为依托工程，基于当地材料配制出了适合柔模泵注混凝土支护技术要求的柔模泵注混凝土，通过对其力学性能及实际应用效果的研究，结果表明该技术可以广泛应用于沿空留巷工程中，为自密实柔模泵注混凝土的推广应用奠定了基础。

Flexible formwork supporting technology of pumping concrete in underground engineering is supporting new forms, mining without coal pillar roadway divided along goaf, driving roadway along goaf, cross mining and the mining without coal pillar roadway as well as in goaf roadway formed in four forms, of which the roadway along goaf pillar drift in economy and technology has many advantages, so the conditions suitable for the mines are preferred.The basic way of Retaining Roadways along goaf is when the upper section after the mining face, will face with a special transport roadway supporting material for maintenance, the retained roadway for working face under section return airway, such a tunnel can be two times using.Flexible mode of pumping concrete supporting technology in Roadway along goaf is widely used. Flexible formwork supporting technology of pumping concrete in the fiber flexible template having a permeable impermeable slurry characteristics, can be internal concrete in superfluous water discharge.In underground support, from the roof of the initial stress very early.In order to meet the technical design and construction technology requirements, the need for flexible mode of pumping concrete in early age performance study.In this paper, through the orthogonal experiment method gets a group of suitable for flexible formwork supporting technology of pumping concrete mix ratio test, and a flexible formwork concrete at different age of 8h, 12h, 1d, 3d, 5d, 7d, 14d, 28d compressive strength.Then the specimens to into the curing room maintenance, make its healing, for its conservation again 28 days after measuring the compressive strength.The research of the flexible mode of pumping concrete early strength and speed up the construction progress has very important significance. The flexible mode of pumping concrete compressive strength index of.Compared with the common concrete control, the experimental results show that the soft mold, pumping concrete early strength is high, its strength is obviously higher than that of ordinary concrete.A fracturing of the flexible mode of pumping concrete of high residual stresses, to continue maintaining, the second fracturing intensity has not reduced, but increased.Description of flexible mode of pumping concrete with strong ability of healing, the micro crack healing completely. In this paper, coal roadway along goaf based on project, based on the local material prepared for flexible mode of pumping concrete supporting technical requirements of the soft mold of pumping concrete, flexible mode of pumping concrete construction technology and engineering application.Practical application shows that it can be extensively applied in civil engineering.For fast hard self compacting soft mold the popularization and application of pumping concrete in foundation.