The internet era has provided a wealth of data sources for landscape assessment by updating the methods of information exchange in public. Landscape assessment using internet discourse and computer language can provide guidance for the rational use of landscape and the scientific management of scenic areas. By taking the internet discourse of travels and reviews about Mountain Qinxiu as research objects, this study extracted the landscape assessment objects and analyze the sentiment responds of landscape using LSTM recurrent neural network. And the sentiment characteristics were analyzed by the sentiment-heat IPA quadrant. According to the results of the study, the public’s landscape assessment is both discrete and convergent. The landscape assessment of Mountain Qinxiu is mainly positive; There is no regular correlation between the landscape thermal index and the landscape sentiment assessment; The sentiment scores of landscape elements indicates that the plant landscapes and meteorological landscapes are natural landscape elements with high recognition, while the cultural features, buildings, and landscapes in human landscape elements are attractions with potential for development. The sentiment scores of attractions indicates that the botanical landscapes are natural attractions with high recognition, and the architectural and garden landscapes in humanistic attractions are attractions with potential for development. It can be found that the sentiment-based landscape assessment of Mountain Qingxiu using LSTM and internet discourse can effectively complement traditional methods of landscape assessment and provide a better opportunity for the public to participate in the management of landscapes.

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Combining with the practical engineering case, the paper summarizes the shallow mining method construction mechanism, construction methods and auxiliary technology. Aiming at the problems in the shield construction, the paper introduces the shield machine equipment’s latest comprehensive construction and technology, especially the shield technology dealing with the conglomerate stratum where the water and boulders is rich. It fills the domestic blank; Deep grouting and pipe roof reinforcement technology are aimed at the specific sources of risk; Whole cross-section of pallet trucks, electric vehicles, automatic metering and other new equipment have been widely applied to the construction site.

Candle Lake wetland at Qingxiu Mountain scenic spot is one of the most important parts of the 'China Water Town' program in Nanning city. In order to figure out the scientific rationality of the situation and design of wetland system, five pilot programs are set up based on flow velocity of three inlets, quantity and position of five outlets and the shape of center island to simulate the flow field and velocity of Candle Lake wetland by using two-dimensional numeral simulation. The results indicated that as follows: 1. The flow field and velocity of Candle Lake wetland can't be improved by increasing the velocity of inlets in the wetland system, so that the problem of large standing water can’t be solved. 2. The flow field and velocity of Candle Lake wetland are influenced by the position and quantity of outlets, especially the outlet 2, outlet 4 and outlet 5, which can improve the flow field and velocity effectively. 3. The flow field and velocity of Candle Lake wetland are also influenced by the shape of shoreline. Optimizing shoreline of Chengxiang Island can improve the flow field and velocity of Candle Lake wetland near the island very well. The flow field and slow velocity of Candle Lake wetland can be improved effectively by the optimizing shape of the Chengxiang Island and the position of outlet 4 and outlet 5, and the problems of large standing water and circulation can be solved very well.